moved to codeberg

Makefile

@@ -1,9 +0,0 @@
-.PHONY: all
-all:
-	make -C src
-	mv src/golsky .
-
-.PHONY: clean
-clean:
-	make -C src clean
-	rm -f dump* rect*

README.md

@@ -1,9 +1,13 @@
+[![License](https://img.shields.io/badge/license-GPL-blue.svg)](https://github.com/tlinden/golsky/blob/master/LICENSE)
+[![Go Report Card](https://goreportcard.com/badge/github.com/tlinden/golsky)](https://goreportcard.com/report/github.com/tlinden/golsky) 
+
 # golsky - Conway's game of life written in GO
 
+> [!IMPORTANT]
+> This software is now being maintained on [Codeberg](https://codeberg.org/scip/golsky/).
+
 ![Golsky Logo](https://github.com/TLINDEN/golsky/blob/main/.github/assets/golskylogo.png)
 
-[![License](https://img.shields.io/badge/license-GPL-blue.svg)](https://github.com/tlinden/golsky/blob/master/LICENSE)
-[![Go Report Card](https://goreportcard.com/badge/github.com/tlinden/golsky)](https://goreportcard.com/report/github.com/tlinden/golsky) 
 
 I wanted to play around a little bit with [**Conways Game of Life**](https://conwaylife.com/)
 in golang and here's the  result. It's a simple game using
@@ -82,17 +86,16 @@ Usage of ./golsky:
 
 While it runs, there are a couple of commands you can use:
 
-* left mouse click: set a cell to alife (also pauses the game)
+
-* right mouse click: set a cell to dead
 * space: pause or resume the game
 * while game is paused: press n to forward one step
 * page up: speed up
 * page down: slow down
 * Mouse wheel: zoom in or out
 * move mouse while left mouse button pressed: move canvas
-* i: enter "insert" (draw) mode: use left mouse to set cells alife and right
+* i: enter "insert" (draw) mode: use left mouse to toggle cells alife state.
-  button to dead. Leave with "space". While in insert mode, use middle mouse
+  Leave with insert mode "space". While in insert mode, use middle mouse
-  button to drag grid.
+  button to drag the grid.
 * r: reset to 1:1 zoom
 * escape: open menu
 * s: save game state to file (can be loaded with -l)

TODO.md

@@ -1,51 +0,0 @@
-- add all other options like size etc
-- add gif export
-- add toolbar (not working yet, see branch trackui)
-- only draw visible part of the world
-- print current mode to the bottom like pause, insert and mark
-- add https://www.ibiblio.org/lifepatterns/october1970.html
-- history: dont count age but do calc to get index to age tile based on cell age
-- maybe pre calc neighbors as 8 slice of pointers to neighboring cells to faster do the count
-  see various-tests/perf-2dim-pointers/: it's NOT faster :(
-- use an array of 8 pointers to neighbors. on edge just add either fake dead neighbors or the wrap around neighbors.
-- try arche ecs variant with either a component of the cells neighbors or using relations.
-- https://mattnakama.com/blog/go-branchless-coding/
-- add performance measurements, see:
-  DrawTriangles: https://github.com/TLINDEN/testgol
-  WritePixels:   https://github.com/TLINDEN/testgol/tree/wrpixels
-https://www.tasnimzotder.com/blog/optimizing-game-of-life-algorithm
-- pre-draw the grid separately to a cache grid image, then during
-  rendering, first draw the dead background, then the life cells, and
-  lastly the grid - if enabled. If disabled, there's be no gap between
-  the cells anymore.
-- Speed
-  https://conwaylife.com/forums/viewtopic.php?f=7&t=3237
-  Look at try-pointers-and-cells branch, we're using pre-calculated
-  neighbor list of pointers to cells, but it's only a liiiiitle bit
-  better :(
-
-
-- Patterns:
-
-A   Catagolue   textcensus   of,  say,   period-2   oscillators   from
-non-symmetrical soups can be found at
-
-https://catagolue.hatsya.com/textcensus/b3s23/C1/xp2
-
-The URL is made by just adding the prefix "text" to the word "census",
-in any URL linked to from a Catagolue census page such as this one:
-
-https://catagolue.hatsya.com/census/b3s23/C1
-
-Format:
-https://conwaylife.com/wiki/Apgcode
-
-
-Collections:
-
-https://conwaylife.com/wiki/Pattern_of_the_Year
-https://www.ibiblio.org/lifepatterns/
-https://entropymine.com/jason/life/
-https://github.com/Matthias-Merzenich/jslife-moving
-https://conwaylife.com/ref/mniemiec/lifepage.htm
-https://conwaylife.com/wiki/Spaceship ff.

go.mod

@@ -1,25 +0,0 @@
-module github.com/tlinden/golsky
-
-go 1.22
-
-require (
-	github.com/hajimehoshi/ebiten/v2 v2.7.4
-	github.com/spf13/pflag v1.0.5
-	golang.org/x/image v0.16.0
-)
-
-require (
-	github.com/alecthomas/repr v0.4.0 // indirect
-	github.com/ebitengine/gomobile v0.0.0-20240518074828-e86332849895 // indirect
-	github.com/ebitengine/hideconsole v1.0.0 // indirect
-	github.com/ebitengine/purego v0.7.0 // indirect
-	github.com/ebitenui/ebitenui v0.5.8-0.20240608175527-424f62327b21 // indirect
-	github.com/golang/freetype v0.0.0-20170609003504-e2365dfdc4a0 // indirect
-	github.com/jezek/xgb v1.1.1 // indirect
-	github.com/mlange-42/arche v0.13.0 // indirect
-	github.com/tinne26/etxt v0.0.8 // indirect
-	golang.org/x/exp v0.0.0-20240222234643-814bf88cf225 // indirect
-	golang.org/x/sync v0.7.0 // indirect
-	golang.org/x/sys v0.20.0 // indirect
-	golang.org/x/text v0.15.0 // indirect
-)

go.sum

@@ -1,36 +0,0 @@
-github.com/alecthomas/repr v0.4.0 h1:GhI2A8MACjfegCPVq9f1FLvIBS+DrQ2KQBFZP1iFzXc=
-github.com/alecthomas/repr v0.4.0/go.mod h1:Fr0507jx4eOXV7AlPV6AVZLYrLIuIeSOWtW57eE/O/4=
-github.com/ebitengine/gomobile v0.0.0-20240518074828-e86332849895 h1:48bCqKTuD7Z0UovDfvpCn7wZ0GUZ+yosIteNDthn3FU=
-github.com/ebitengine/gomobile v0.0.0-20240518074828-e86332849895/go.mod h1:XZdLv05c5hOZm3fM2NlJ92FyEZjnslcMcNRrhxs8+8M=
-github.com/ebitengine/hideconsole v1.0.0 h1:5J4U0kXF+pv/DhiXt5/lTz0eO5ogJ1iXb8Yj1yReDqE=
-github.com/ebitengine/hideconsole v1.0.0/go.mod h1:hTTBTvVYWKBuxPr7peweneWdkUwEuHuB3C1R/ielR1A=
-github.com/ebitengine/purego v0.7.0 h1:HPZpl61edMGCEW6XK2nsR6+7AnJ3unUxpTZBkkIXnMc=
-github.com/ebitengine/purego v0.7.0/go.mod h1:ah1In8AOtksoNK6yk5z1HTJeUkC1Ez4Wk2idgGslMwQ=
-github.com/ebitenui/ebitenui v0.5.6 h1:qyJRU5j+lQo1lamxB48IBwMxMfz1xNb5iWUayCtA0Wk=
-github.com/ebitenui/ebitenui v0.5.6/go.mod h1:I0rVbTOUi7gWKTPet2gzbvhOdkHp5pJXMM6c6b3dRoE=
-github.com/ebitenui/ebitenui v0.5.8-0.20240608175527-424f62327b21 h1:dElhYGyf+FYY+makAndUQNOSDwFSFYyFWziPwQrPObY=
-github.com/ebitenui/ebitenui v0.5.8-0.20240608175527-424f62327b21/go.mod h1:I0rVbTOUi7gWKTPet2gzbvhOdkHp5pJXMM6c6b3dRoE=
-github.com/golang/freetype v0.0.0-20170609003504-e2365dfdc4a0 h1:DACJavvAHhabrF08vX0COfcOBJRhZ8lUbR+ZWIs0Y5g=
-github.com/golang/freetype v0.0.0-20170609003504-e2365dfdc4a0/go.mod h1:E/TSTwGwJL78qG/PmXZO1EjYhfJinVAhrmmHX6Z8B9k=
-github.com/hajimehoshi/ebiten/v2 v2.7.4 h1:X+heODRQ3Ie9F9QFjm24gEZqQd5FSfR9XuT2XfHwgf8=
-github.com/hajimehoshi/ebiten/v2 v2.7.4/go.mod h1:H2pHVgq29rfm5yeQ7jzWOM3VHsjo7/AyucODNLOhsVY=
-github.com/jezek/xgb v1.1.1 h1:bE/r8ZZtSv7l9gk6nU0mYx51aXrvnyb44892TwSaqS4=
-github.com/jezek/xgb v1.1.1/go.mod h1:nrhwO0FX/enq75I7Y7G8iN1ubpSGZEiA3v9e9GyRFlk=
-github.com/mlange-42/arche v0.13.0 h1:ef0fu9qC2KIr8wIlVs+CgeQ5CSUJ8A1Hut6nXYdf+xk=
-github.com/mlange-42/arche v0.13.0/go.mod h1:bFktKnvGDj2kP01xar79z0hKwGHdnoaEZR8HWmJkIyU=
-github.com/spf13/pflag v1.0.5 h1:iy+VFUOCP1a+8yFto/drg2CJ5u0yRoB7fZw3DKv/JXA=
-github.com/spf13/pflag v1.0.5/go.mod h1:McXfInJRrz4CZXVZOBLb0bTZqETkiAhM9Iw0y3An2Bg=
-github.com/tinne26/etxt v0.0.8 h1:rjb58jkMkapRGLmhBMWnT76E/nMTXC5P1Q956BRZkoc=
-github.com/tinne26/etxt v0.0.8/go.mod h1:QM/hlNkstsKC39elTFNKAR34xsMb9QoVosf+g9wlYxM=
-github.com/tinne26/etxt v0.0.9-alpha.6.0.20240409152929-91bfc562becc h1:+USGSXbkrRAy6bz3Qm4GUczhqeXe7XlRfkRexCSFxkw=
-github.com/tinne26/etxt v0.0.9-alpha.6.0.20240409152929-91bfc562becc/go.mod h1:Icbd4bDjrXag1oYIhB51CrkMYqRb7YMv0AsrOSfNKfU=
-golang.org/x/exp v0.0.0-20240222234643-814bf88cf225 h1:LfspQV/FYTatPTr/3HzIcmiUFH7PGP+OQ6mgDYo3yuQ=
-golang.org/x/exp v0.0.0-20240222234643-814bf88cf225/go.mod h1:CxmFvTBINI24O/j8iY7H1xHzx2i4OsyguNBmN/uPtqc=
-golang.org/x/image v0.16.0 h1:9kloLAKhUufZhA12l5fwnx2NZW39/we1UhBesW433jw=
-golang.org/x/image v0.16.0/go.mod h1:ugSZItdV4nOxyqp56HmXwH0Ry0nBCpjnZdpDaIHdoPs=
-golang.org/x/sync v0.7.0 h1:YsImfSBoP9QPYL0xyKJPq0gcaJdG3rInoqxTWbfQu9M=
-golang.org/x/sync v0.7.0/go.mod h1:Czt+wKu1gCyEFDUtn0jG5QVvpJ6rzVqr5aXyt9drQfk=
-golang.org/x/sys v0.20.0 h1:Od9JTbYCk261bKm4M/mw7AklTlFYIa0bIp9BgSm1S8Y=
-golang.org/x/sys v0.20.0/go.mod h1:/VUhepiaJMQUp4+oa/7Zr1D23ma6VTLIYjOOTFZPUcA=
-golang.org/x/text v0.15.0 h1:h1V/4gjBv8v9cjcR6+AR5+/cIYK5N/WAgiv4xlsEtAk=
-golang.org/x/text v0.15.0/go.mod h1:18ZOQIKpY8NJVqYksKHtTdi31H5itFRjB5/qKTNYzSU=

mkrel.sh

@@ -1,69 +0,0 @@
-#!/bin/bash
-
-# Copyright © 2024 Thomas von Dein
-
-# This program is free software: you can redistribute it and/or modify
-# it under the terms of the GNU General Public License as published by
-# the Free Software Foundation, either version 3 of the License, or
-# (at your option) any later version.
-
-# This program is distributed in the hope that it will be useful,
-# but WITHOUT ANY WARRANTY; without even the implied warranty of
-# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-# GNU General Public License for more details.
-
-# You should have received a copy of the GNU General Public License
-# along with this program. If not, see <http://www.gnu.org/licenses/>.
-
-
-# get list with: go tool dist list
-DIST="linux/amd64
-windows/amd64 "
-
-tool="$1"
-version="$2"
-
-if test -z "$version"; then
-  echo "Usage: $0 <tool name> <release version>"
-  exit 1
-fi
-
-rm -rf releases
-mkdir -p releases
-
-
-for D in $DIST; do
-    os=${D/\/*/}
-    arch=${D/*\//}
-    binfile="releases/${tool}-${os}-${arch}-${version}"
-
-    if test "$os" = "windows"; then
-        binfile="${binfile}.exe"
-    fi
-    
-    tardir="${tool}-${os}-${arch}-${version}"
-    tarfile="releases/${tool}-${os}-${arch}-${version}.tar.gz"
-    set -x
-    GOOS=${os} GOARCH=${arch} go build -o ${binfile}
-    set +x
-    continue
-    
-    mkdir -p ${tardir}
-    cp ${binfile} README.md LICENSE ${tardir}/
-    echo 'tool = gfn
-PREFIX = /usr/local
-UID    = root
-GID    = 0
-
-install:
-	install -d -o $(UID) -g $(GID) $(PREFIX)/bin
-	install -d -o $(UID) -g $(GID) $(PREFIX)/man/man1
-	install -o $(UID) -g $(GID) -m 555 $(tool)  $(PREFIX)/sbin/
-	install -o $(UID) -g $(GID) -m 444 $(tool).1 $(PREFIX)/man/man1/' > ${tardir}/Makefile
-    tar cpzf ${tarfile} ${tardir}
-    sha256sum ${binfile} | cut -d' ' -f1 > ${binfile}.sha256
-    sha256sum ${tarfile} | cut -d' ' -f1 > ${tarfile}.sha256
-    rm -rf ${tardir}
-    set +x
-done
-

rle/pattern_parser.go

@@ -1,159 +0,0 @@
-package rle
-
-import (
-	"strconv"
-)
-
-type TokenType string
-
-type Token struct {
-	Type    TokenType
-	Literal string
-}
-
-const (
-	RUN_COUNT  = "RUN_COUNT"
-	DEAD_CELL  = "DEAD_CELL"
-	ALIVE_CELL = "ALIVE_CELL"
-	EOL        = "EOL"
-	EOP        = "EOP"
-)
-
-type Lexer struct {
-	input        string
-	position     int
-	readPosition int
-	char         byte
-}
-
-func NewLexer(input string) *Lexer {
-	l := &Lexer{input: input}
-	l.readChar()
-	return l
-}
-
-func (l *Lexer) NextToken() Token {
-	var tok Token
-
-	l.skipWhitespace()
-
-	switch l.char {
-	case '$':
-		tok = newToken(EOL, l.char)
-	case '!':
-		tok = newToken(EOP, l.char)
-	case 'b':
-		tok = newToken(DEAD_CELL, l.char)
-	case 'o':
-		tok = newToken(ALIVE_CELL, l.char)
-	default:
-		if isDigit(l.char) {
-			tok.Type = RUN_COUNT
-			tok.Literal = l.readNumber()
-			return tok
-		}
-	}
-
-	l.readChar()
-	return tok
-}
-
-func newToken(tokenType TokenType, char byte) Token {
-	return Token{Type: tokenType, Literal: string(char)}
-}
-
-type PatternParser struct {
-	lexer        *Lexer
-	currentToken Token
-	peekToken    Token
-}
-
-func NewParser(lexer *Lexer) *PatternParser {
-	p := &PatternParser{
-		lexer: lexer,
-	}
-	p.nextToken()
-	p.nextToken()
-
-	return p
-}
-
-func (pp *PatternParser) ParsePattern(width, height int) [][]int {
-	result := make([][]int, height)
-
-	row := make([]int, width)
-	var rowIndex int
-	var colIndex int
-	for {
-		switch pp.currentToken.Type {
-		case RUN_COUNT:
-			count, _ := strconv.Atoi(pp.currentToken.Literal)
-			for i := 0; i < count; i++ {
-				switch pp.peekToken.Type {
-				case ALIVE_CELL:
-					row[rowIndex+i] = 1
-				case DEAD_CELL:
-					row[rowIndex+i] = 0
-				case EOL:
-					result[colIndex] = row
-					row = make([]int, width)
-					rowIndex = -1
-					colIndex++
-				}
-			}
-
-			if pp.peekToken.Type != EOL {
-				rowIndex += count - 1
-			}
-			pp.nextToken()
-		case ALIVE_CELL:
-			row[rowIndex] = 1
-		case DEAD_CELL:
-			row[rowIndex] = 0
-		case EOL:
-			result[colIndex] = row
-			row = make([]int, width)
-			rowIndex = -1
-			colIndex++
-		case EOP:
-			result[colIndex] = row
-			return result
-		}
-		rowIndex++
-		pp.nextToken()
-	}
-}
-
-func (pp *PatternParser) nextToken() {
-	pp.currentToken = pp.peekToken
-	pp.peekToken = pp.lexer.NextToken()
-}
-
-func isDigit(char byte) bool {
-	return '0' <= char && char <= '9'
-}
-
-func (l *Lexer) readChar() {
-	if l.readPosition >= len(l.input) {
-		l.char = 0
-	} else {
-		l.char = l.input[l.readPosition]
-	}
-	l.position = l.readPosition
-	l.readPosition++
-}
-
-func (l *Lexer) readNumber() string {
-	position := l.position
-	for isDigit(l.char) {
-		l.readChar()
-	}
-
-	return l.input[position:l.position]
-}
-
-func (l *Lexer) skipWhitespace() {
-	for l.char == ' ' || l.char == '\t' || l.char == '\n' || l.char == '\r' {
-		l.readChar()
-	}
-}

rle/pattern_parser_test.go

@@ -1,163 +0,0 @@
-package rle
-
-import (
-	"reflect"
-	"testing"
-)
-
-func TestNextToken(t *testing.T) {
-	input := "bo$2bo$3o!"
-
-	tests := []struct {
-		expectedType    TokenType
-		expectedLiteral string
-	}{
-		{DEAD_CELL, "b"},
-		{ALIVE_CELL, "o"},
-		{EOL, "$"},
-		{RUN_COUNT, "2"},
-		{DEAD_CELL, "b"},
-		{ALIVE_CELL, "o"},
-		{EOL, "$"},
-		{RUN_COUNT, "3"},
-		{ALIVE_CELL, "o"},
-		{EOP, "!"},
-	}
-
-	l := NewLexer(input)
-
-	for _, test := range tests {
-		token := l.NextToken()
-
-		if token.Type != test.expectedType {
-			t.Errorf("Token typ not correct")
-		}
-
-		if token.Literal != test.expectedLiteral {
-			t.Errorf("Literal not correct")
-		}
-	}
-}
-
-func TestParsePattern(t *testing.T) {
-	tests := []struct {
-		input    string
-		expected [][]int
-		width    int
-		height   int
-	}{
-		{
-			input: "bo$2bo$3o!",
-			expected: [][]int{
-				{0, 1, 0},
-				{0, 0, 1},
-				{1, 1, 1},
-			},
-			width:  3,
-			height: 3,
-		},
-		{
-			input: `24bo$22bobo$12b2o6b2o12b2o$11bo3bo4b2o12b2o$2o8bo5bo3b2o$2o8bo3bob2o4b
-							obo$10bo5bo7bo$11bo3bo$12b2o!`,
-			expected: [][]int{
-				{0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 1, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0},
-				{0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 1, 0, 1, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0},
-				{0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 1, 1, 0, 0, 0, 0, 0, 0, 1, 1, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 1, 1},
-				{0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 1, 0, 0, 0, 1, 0, 0, 0, 0, 1, 1, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 1, 1},
-				{1, 1, 0, 0, 0, 0, 0, 0, 0, 0, 1, 0, 0, 0, 0, 0, 1, 0, 0, 0, 1, 1, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0},
-				{1, 1, 0, 0, 0, 0, 0, 0, 0, 0, 1, 0, 0, 0, 1, 0, 1, 1, 0, 0, 0, 0, 1, 0, 1, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0},
-				{0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 1, 0, 0, 0, 0, 0, 1, 0, 0, 0, 0, 0, 0, 0, 1, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0},
-				{0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 1, 0, 0, 0, 1, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0},
-				{0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 1, 1, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0},
-			},
-			width:  36,
-			height: 9,
-		},
-		{
-			input: `20b2o$
-							20b2o4$
-							9b2o$
-							8bo2bo10b2o$
-							9b2o11bo$
-							22bo12bo$
-							23bo10bobo$
-							34bobo$
-							35bo7$
-							32bo2bo$
-							33b3o$
-							2o38b2o$
-							2o38b2o$
-							6b3o$
-							6bo2bo7$
-							6bo$
-							5bobo$
-							5bobo10bo$
-							6bo12bo$
-							19bo11b2o$
-							18b2o10bo2bo$
-							31b2o4$
-							20b2o$
-							20b2o!`,
-			expected: [][]int{
-				{0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 1, 1, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0},
-				{0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 1, 1, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0},
-				{0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0},
-				{0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0},
-				{0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0},
-				{0, 0, 0, 0, 0, 0, 0, 0, 0, 1, 1, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0},
-				{0, 0, 0, 0, 0, 0, 0, 0, 1, 0, 0, 1, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 1, 1, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0},
-				{0, 0, 0, 0, 0, 0, 0, 0, 0, 1, 1, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 1, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0},
-				{0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 1, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 1, 0, 0, 0, 0, 0, 0},
-				{0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 1, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 1, 0, 1, 0, 0, 0, 0, 0},
-				{0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 1, 0, 1, 0, 0, 0, 0, 0},
-				{0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 1, 0, 0, 0, 0, 0, 0},
-				{0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0},
-				{0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0},
-				{0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0},
-				{0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0},
-				{0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0},
-				{0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0},
-				{0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 1, 0, 0, 1, 0, 0, 0, 0, 0, 0},
-				{0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 1, 1, 1, 0, 0, 0, 0, 0, 0},
-				{1, 1, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 1, 1},
-				{1, 1, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 1, 1},
-				{0, 0, 0, 0, 0, 0, 1, 1, 1, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0},
-				{0, 0, 0, 0, 0, 0, 1, 0, 0, 1, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0},
-				{0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0},
-				{0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0},
-				{0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0},
-				{0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0},
-				{0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0},
-				{0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0},
-				{0, 0, 0, 0, 0, 0, 1, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0},
-				{0, 0, 0, 0, 0, 1, 0, 1, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0},
-				{0, 0, 0, 0, 0, 1, 0, 1, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 1, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0},
-				{0, 0, 0, 0, 0, 0, 1, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 1, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0},
-				{0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 1, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 1, 1, 0, 0, 0, 0, 0, 0, 0, 0, 0},
-				{0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 1, 1, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 1, 0, 0, 1, 0, 0, 0, 0, 0, 0, 0, 0},
-				{0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 1, 1, 0, 0, 0, 0, 0, 0, 0, 0, 0},
-				{0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0},
-				{0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0},
-				{0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0},
-				{0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 1, 1, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0},
-				{0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 1, 1, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0},
-			},
-			width:  42,
-			height: 42,
-		},
-	}
-
-	for _, test := range tests {
-		l := NewLexer(test.input)
-		pp := NewParser(l)
-		result := pp.ParsePattern(test.width, test.height)
-
-		if !reflect.DeepEqual(result, test.expected) {
-			t.Fatalf(
-				"Patterns do not match.\nExpected: %v\nGot: %v",
-				test.expected,
-				result,
-			)
-		}
-	}
-}

rle/rle.go

@@ -1,195 +0,0 @@
-// original source: https://github.com/nhoffmann/life by N.Hoffmann 2020.
-package rle
-
-import (
-	"fmt"
-	"os"
-	"regexp"
-	"strconv"
-	"strings"
-)
-
-type RLE struct {
-	Rule    string  // rule
-	Width   int     // x
-	Height  int     // y
-	Pattern [][]int // The actual pattern
-
-	inputLines       []string
-	headerLineIndex  int
-	patternLineIndex int
-}
-
-// wrapper to load a RLE file
-func GetRLE(filename string) (*RLE, error) {
-	if filename == "" {
-		return nil, nil
-	}
-
-	content, err := os.ReadFile(filename)
-	if err != nil {
-		return nil, err
-	}
-
-	parsedRle, err := Parse(string(content))
-	if err != nil {
-		return nil, fmt.Errorf("failed to load RLE pattern file: %s", err)
-	}
-
-	return &parsedRle, nil
-}
-
-func Parse(input string) (RLE, error) {
-	rle := RLE{
-		inputLines: strings.Split(input, "\n"),
-	}
-
-	rle.partitionFile()
-
-	err := rle.parseComments()
-	if err != nil {
-		return RLE{}, err
-	}
-	err = rle.parseHeader()
-	if err != nil {
-		return RLE{}, err
-	}
-	err = rle.parsePattern()
-	if err != nil {
-		return RLE{}, err
-	}
-
-	return rle, nil
-}
-
-func (rle *RLE) partitionFile() error {
-	for index, line := range rle.inputLines {
-		cleanLine := removeWhitespace(line)
-		if strings.HasPrefix(cleanLine, "x=") {
-			rle.headerLineIndex = index
-			rle.patternLineIndex = index + 1
-			return nil
-		}
-	}
-
-	return fmt.Errorf("invalid input: Header is missing")
-}
-
-func (rle *RLE) parseComments() error {
-	return nil
-}
-
-func (rle *RLE) parseHeader() (err error) {
-	headerLine := removeWhitespace(rle.inputLines[rle.headerLineIndex])
-
-	headerElements := strings.SplitN(headerLine, ",", 3)
-
-	rle.Width, err = strconv.Atoi(strings.TrimPrefix(headerElements[0], "x="))
-	if err != nil {
-		return err
-	}
-	rle.Height, err = strconv.Atoi(strings.TrimPrefix(headerElements[1], "y="))
-	if err != nil {
-		return err
-	}
-
-	rle.Pattern = make([][]int, rle.Width)
-
-	// check wehter a rule is present, since it's optional
-	if len(headerElements) == 3 {
-		rle.Rule = strings.TrimPrefix(headerElements[2], "rule=")
-	}
-
-	return nil
-}
-
-func (rle *RLE) parsePattern() error {
-	patternString := strings.Join(rle.inputLines[rle.patternLineIndex:], "")
-
-	l := NewLexer(patternString)
-	pp := NewParser(l)
-
-	rle.Pattern = pp.ParsePattern(rle.Width, rle.Height)
-
-	return nil
-}
-
-func removeWhitespace(input string) string {
-	re := regexp.MustCompile(` *\t*\r*\n*`)
-	return re.ReplaceAllString(input, "")
-}
-
-// Store a grid to an RLE file
-func StoreGridToRLE(grid [][]bool, filename, rule string, width, height int) error {
-	fd, err := os.Create(filename)
-	if err != nil {
-		return err
-	}
-
-	var pattern string
-
-	for y := 0; y < height; y++ {
-		line := ""
-		for x := 0; x < width; x++ {
-			char := "b"
-			if grid[y][x] {
-				char = "o"
-			}
-
-			line += char
-		}
-
-		// if first row is: 001011110, then line is now:
-		//                  bboboooob
-
-		encoded := RunLengthEncode(line)
-
-		// and now its:     2bob4ob
-		pattern += encoded
-
-		if y != height-1 {
-			pattern += "$"
-		}
-	}
-
-	pattern += "!"
-
-	wrapped := ""
-	for idx, char := range pattern {
-		if idx%70 == 0 && idx != 0 {
-			wrapped += "\n"
-		}
-		wrapped += string(char)
-	}
-
-	_, err = fmt.Fprintf(fd, "#N %s\nx = %d, y = %d, rule = %s\n%s\n",
-		filename, width, height, rule, wrapped)
-
-	if err != nil {
-		return err
-	}
-
-	return nil
-}
-
-// by peterSO on
-// https://codereview.stackexchange.com/questions/238893/run-length-encoding-in-golang
-func RunLengthEncode(s string) string {
-	e := make([]byte, 0, len(s))
-	for i := 0; i < len(s); i++ {
-		c := s[i]
-		j := i + 1
-		for ; j <= len(s); j++ {
-			if j < len(s) && s[j] == c {
-				continue
-			}
-			if j-i > 1 {
-				e = strconv.AppendInt(e, int64(j-i), 10)
-			}
-			e = append(e, c)
-			break
-		}
-		i = j - 1
-	}
-	return string(e)
-}

rle/rle_test.go

@@ -1,84 +0,0 @@
-package rle
-
-import (
-	"reflect"
-	"testing"
-)
-
-func TestRLE(t *testing.T) {
-	t.Run("Parse", func(t *testing.T) {
-		tests := []struct {
-			input           string
-			expectedPattern [][]int
-			expectedComment string
-			expectedWidth   int
-			expectedHeight  int
-			expectedRule    string
-		}{
-			{
-				input: `#C This is a glider.
-				x = 3, y = 3
-				bo$2bo$3o!`,
-				expectedPattern: [][]int{
-					{0, 1, 0},
-					{0, 0, 1},
-					{1, 1, 1},
-				},
-				expectedWidth:  3,
-				expectedHeight: 3,
-				expectedRule:   "",
-			},
-			{
-				input: `#N Gosper glider gun
-				#C This was the first gun discovered.
-				#C As its name suggests, it was discovered by Bill Gosper.
-				x = 36, y = 9, rule = B3/S23
-				24bo$22bobo$12b2o6b2o12b2o$11bo3bo4b2o12b2o$2o8bo5bo3b2o$2o8bo3bob2o4b
-				obo$10bo5bo7bo$11bo3bo$12b2o!`,
-				expectedPattern: [][]int{
-					{0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 1, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0},
-					{0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 1, 0, 1, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0},
-					{0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 1, 1, 0, 0, 0, 0, 0, 0, 1, 1, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 1, 1},
-					{0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 1, 0, 0, 0, 1, 0, 0, 0, 0, 1, 1, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 1, 1},
-					{1, 1, 0, 0, 0, 0, 0, 0, 0, 0, 1, 0, 0, 0, 0, 0, 1, 0, 0, 0, 1, 1, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0},
-					{1, 1, 0, 0, 0, 0, 0, 0, 0, 0, 1, 0, 0, 0, 1, 0, 1, 1, 0, 0, 0, 0, 1, 0, 1, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0},
-					{0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 1, 0, 0, 0, 0, 0, 1, 0, 0, 0, 0, 0, 0, 0, 1, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0},
-					{0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 1, 0, 0, 0, 1, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0},
-					{0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 1, 1, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0},
-				},
-				expectedWidth:  36,
-				expectedHeight: 9,
-				expectedRule:   "B3/S23",
-			},
-		}
-
-		for _, test := range tests {
-			rle, err := Parse(test.input)
-
-			if err != nil {
-				t.Error(err)
-			}
-
-			if rle.Width != test.expectedWidth {
-				t.Errorf("Width dos not match")
-			}
-
-			if rle.Height != test.expectedHeight {
-				t.Errorf("Height does not match")
-			}
-
-			if rle.Rule != test.expectedRule {
-				t.Errorf("Rule does not match")
-			}
-
-			if !reflect.DeepEqual(rle.Pattern, test.expectedPattern) {
-				t.Errorf(
-					"Patterns do not match.\nExpected: %v\nGot: %v",
-					test.expectedPattern,
-					rle.Pattern,
-				)
-			}
-		}
-	})
-
-}

sample-rles/64P2H1V0.rle

@@ -1,3 +0,0 @@
-x = 8, y = 31, rule = B3/S23
-o$4o$2b2o$5bo$2b4o$6bo$2bo2b3o$4b3o$5bo$ob3o$2o2bo$b3o$bo$3bo$bobo$4bo$bobo$
-3bo$bo$b3o$2o2bo$ob3o$5bo$4b3o$2bo2b3o$6bo$2b4o$5bo$2b2o$4o$o!

sample-rles/glider.rle

@@ -1,2 +0,0 @@
-x = 3, y = 3, rule = B3/S23
-3o$2bo$bo!

sample-rles/lightweight9.rle

@@ -1,4 +0,0 @@
-x = 33, y = 10, rule = B3/S23
-5b3o17b3o$4bo3bo3bo7bo3bo3bo$3b2o4bob3o5b3obo4b2o$2bobob2obo3b2o3b2o3bob2obob
-o$b2obo4bobo2b2ob2o2bobo4bob2o$o4bo3bo4bo3bo4bo3bo4bo$14b5o$2o9b2obo3bob2o9b
-2o$11b2obo3bob2o$11b2obobobob2o!

sample-rles/p39piheptominohasslerdimer.rle

@@ -1,8 +0,0 @@
-#N p39piheptominohasslerdimer.rle
-#C https://conwaylife.com/wiki/P39_pi-heptomino_hassler
-#C https://www.conwaylife.com/patterns/p39piheptominohasslerdimer.rle
-x = 51, y = 30, rule = B3/S23
-9b2o$8bobo$8bo$3bob2ob2o$3b2obo$6bo$6b2o27b2o$35b2o4$22b2o3b2o$22bobo
-2b2o$10b3o10bo$2obo6bobo25bobo6b2obo$ob2o6bobo25bobo6bob2o$27bo10b3o$
-22b2o2bobo$22b2o3b2o4$14b2o$14b2o27b2o$44bo$44bob2o$41b2ob2obo$42bo$
-40bobo$40b2o!

sample-rles/weekender.rle

@@ -1,13 +0,0 @@
-#N 244p7h3v0.rle
-#C https://conwaylife.com/wiki/232P7H3V0
-#C https://www.conwaylife.com/patterns/244p7h3v0.rle
-x = 51, y = 52, rule = B3/S23
-19b3o9b3o$18bo3bo7bo3bo$17bobo3bo5bo3bobo$17bo3b2o7b2o3bo$17b3o3bo5bo
-3b3o$16bo3b2ob3ob3ob2o3bo$16b2o2bo3b2ob2o3bo2b2o$15b3o3b5ob5o3b3o$23bo
-5bo$20bo11bo$15bo4bo11bo4bo$15bo4b4o5b4o4bo$19bo4bo3bo4bo$18b2ob3o5b3o
-b2o$18b2obo3bobo3bob2o$14b3o7b2ob2o7b3o$13bo3b2o4bobobobo4b2o3bo$12bo
-3bo19bo3bo$12bo9b3o3b3o9bo$16bo6b2o3b2o6bo$11bo12bo3bo12bo$11bo2b2o5bo
-9bo5b2o2bo$12b2o8bo7bo8b2o$10bo12bo5bo12bo$9b3o29b3o$8b2o2bo27bo2b2o$
-11b2o27b2o$11bo29bo2$8bo35bo$9b2o31b2o$7bo2bo31bo2bo$6bo39bo$5b2o39b2o
-$4b4o37b4o$3bo45bo$3b3o41b3o$2bo47bo$4b2o41b2o$6bo39bo$4b2o41b2o$5bo
-41bo$4bo43bo$4bo43bo$2b2o$2obo$o$2o$bo3bo$4bo$o2bo$o!

src/Makefile

@@ -1,97 +0,0 @@
-# Copyright © 2024 Thomas von Dein
-
-# This program is free software: you can redistribute it and/or modify
-# it under the terms of the GNU General Public License as published by
-# the Free Software Foundation, either version 3 of the License, or
-# (at your option) any later version.
-
-# This program is distributed in the hope that it will be useful,
-# but WITHOUT ANY WARRANTY; without even the implied warranty of
-# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-# GNU General Public License for more details.
-
-# You should have received a copy of the GNU General Public License
-# along with this program. If not, see <http://www.gnu.org/licenses/>.
-
-
-#
-# no need to modify anything below
-tool      = golsky
-VERSION   = $(shell grep VERSION main.go | head -1 | cut -d '"' -f2)
-archs     = darwin freebsd linux windows
-PREFIX    = /usr/local
-UID       = root
-GID       = 0
-HAVE_POD := $(shell pod2text -h 2>/dev/null)
-#TAGS      = -tags=ebitenginedebug
-
-all: buildlocal
-
-
-buildlocal:
-	go build $(TAGS) -o $(tool)
-
-install: buildlocal
-	install -d -o $(UID) -g $(GID) $(PREFIX)/bin
-	install -d -o $(UID) -g $(GID) $(PREFIX)/man/man1
-	install -o $(UID) -g $(GID) -m 555 $(tool)  $(PREFIX)/sbin/
-	install -o $(UID) -g $(GID) -m 444 $(tool).1 $(PREFIX)/man/man1/
-
-clean:
-	rm -rf $(tool) coverage.out testdata t/out
-
-test: clean
-	mkdir -p t/out
-	go test ./... $(ARGS)
-
-testlint: test lint
-
-lint:
-	golangci-lint run
-
-lint-full:
-	golangci-lint run --enable-all --exclude-use-default --disable exhaustivestruct,exhaustruct,depguard,interfacer,deadcode,golint,structcheck,scopelint,varcheck,ifshort,maligned,nosnakecase,godot,funlen,gofumpt,cyclop,noctx,gochecknoglobals,paralleltest
-
-testfuzzy: clean
-	go test -fuzz ./... $(ARGS)
-
-singletest:
-	@echo "Call like this: make singletest TEST=TestPrepareColumns ARGS=-v"
-	go test -run $(TEST) $(ARGS)
-
-cover-report:
-	go test ./... -cover -coverprofile=coverage.out
-	go tool cover -html=coverage.out
-
-goupdate:
-	go get -t -u=patch ./...
-
-buildall:
-	./mkrel.sh $(tool) $(VERSION)
-
-release: buildall
-	gh release create $(VERSION) --generate-notes releases/*
-
-show-versions: buildlocal
-	@echo "### golsky version:"
-	@./golsky -V
-
-	@echo
-	@echo "### go module versions:"
-	@go list -m all
-
-	@echo
-	@echo "### go version used for building:"
-	@grep -m 1 go go.mod
-
-# lint:
-# 	golangci-lint run -p bugs -p unused
-
-buildwasm:
-	env GOOS=js GOARCH=wasm go build -o $(tool).wasm $(LDFLAGS) .
-
-zipwasm:
-	zip -r openquell-$(SHORTVERSION).zip index.html $(tool).wasm wasm_exec.js
-
-wasm: buildwasm zipwasm
-	@ls -l $(tool)-$(SHORTVERSION).zip

src/assets/shaders/row.kg

@@ -1,13 +0,0 @@
-//kage:unit pixels
-
-package main
-
-var Alife int
-
-func Fragment(_ vec4, pos vec2, _ vec4) vec4 {
-        if Alife == 1 {
-                return vec4(0.0)
-        }
-
-        return vec4(1.0)
-}

src/camera.go

@@ -1,81 +0,0 @@
-// this comes from the camera example but I enhanced it a little bit
-
-package main
-
-import (
-	"fmt"
-	"math"
-
-	"github.com/hajimehoshi/ebiten/v2"
-	"golang.org/x/image/math/f64"
-)
-
-type Camera struct {
-	ViewPort          f64.Vec2
-	Position          f64.Vec2
-	ZoomFactor        int
-	InitialZoomFactor int
-	InitialPosition   f64.Vec2
-	ZoomOutFactor     int
-}
-
-func (c *Camera) String() string {
-	return fmt.Sprintf(
-		"T: %.1f, S: %d",
-		c.Position, c.ZoomFactor,
-	)
-}
-
-func (c *Camera) viewportCenter() f64.Vec2 {
-	return f64.Vec2{
-		c.ViewPort[0] * 0.5,
-		c.ViewPort[1] * 0.5,
-	}
-}
-
-func (c *Camera) worldMatrix() ebiten.GeoM {
-	m := ebiten.GeoM{}
-	m.Translate(-c.Position[0], -c.Position[1])
-
-	viewportCenter := c.viewportCenter()
-
-	// We want to scale and rotate around center of image / screen
-	m.Translate(-viewportCenter[0], -viewportCenter[1])
-
-	m.Scale(
-		math.Pow(1.01, float64(c.ZoomFactor)),
-		math.Pow(1.01, float64(c.ZoomFactor)),
-	)
-
-	m.Translate(viewportCenter[0], viewportCenter[1])
-	return m
-}
-
-func (c *Camera) Render(world, screen *ebiten.Image) {
-	screen.DrawImage(world, &ebiten.DrawImageOptions{
-		GeoM: c.worldMatrix(),
-	})
-}
-
-func (c *Camera) ScreenToWorld(posX, posY int) (float64, float64) {
-	inverseMatrix := c.worldMatrix()
-	if inverseMatrix.IsInvertible() {
-		inverseMatrix.Invert()
-		return inverseMatrix.Apply(float64(posX), float64(posY))
-	} else {
-		// When scaling it can happened that matrix is not invertable
-		return math.NaN(), math.NaN()
-	}
-}
-
-func (c *Camera) Setup() {
-	c.Position[0] = c.InitialPosition[0]
-	c.Position[1] = c.InitialPosition[1]
-	c.ZoomFactor = c.InitialZoomFactor
-}
-
-func (c *Camera) Reset() {
-	c.Position[0] = c.InitialPosition[0]
-	c.Position[1] = c.InitialPosition[1]
-	c.ZoomFactor = c.ZoomOutFactor
-}

src/config.go

@@ -1,291 +0,0 @@
-package main
-
-import (
-	"errors"
-	"fmt"
-	"math"
-	"os"
-	"runtime/pprof"
-	"strconv"
-	"strings"
-
-	"github.com/spf13/pflag"
-	"github.com/tlinden/golsky/rle"
-)
-
-// all the settings comming from commandline, but maybe tweaked later from the UI
-type Config struct {
-	Width, Height, Cellsize, Density         int // measurements
-	ScreenWidth, ScreenHeight                int
-	TPG                                      int      // ticks per generation/game speed, 1==max
-	Debug, Empty, Paused, Markmode, Drawmode bool     // game modi
-	ShowEvolution, ShowGrid, RunOneStep      bool     // flags
-	Rule                                     *Rule    // which rule to use, default: B3/S23
-	RLE                                      *rle.RLE // loaded GOL pattern from RLE file
-	Statefile                                string   // load game state from it if non-nil
-	StateGrid                                *Grid    // a grid from a statefile
-	Wrap                                     bool     // wether wraparound mode is in place or not
-	ShowVersion                              bool
-	UseShader                                bool // to use a shader to render alife cells
-	Restart, RestartGrid, RestartCache       bool
-	StartWithMenu                            bool
-	Zoomfactor                               int
-	ZoomOutFactor                            int
-	InitialCamPos                            []float64
-	DelayedStart                             bool // if true game, we wait. like pause but program induced
-	Theme                                    string
-	ThemeManager                             ThemeManager
-
-	// for internal profiling
-	ProfileFile     string
-	ProfileDraw     bool
-	ProfileMaxLoops int64
-}
-
-const (
-	VERSION = "v0.0.8"
-	Alive   = true
-	Dead    = false
-
-	DEFAULT_GRID_WIDTH  = 600
-	DEFAULT_GRID_HEIGHT = 400
-	DEFAULT_CELLSIZE    = 4
-	DEFAULT_ZOOMFACTOR  = 400
-	DEFAULT_GEOM        = "640x384"
-	DEFAULT_THEME       = "standard" // "light" // inverse => "dark"
-)
-
-const KEYBINDINGS string = `
-- SPACE: pause or resume the game
-- N: while game is paused: forward one step
-- PAGE UP: speed up
-- PAGE DOWN: slow down
-- MOUSE WHEEL: zoom in or out
-- LEFT MOUSE BUTTON: use to drag canvas, keep clicked and move mouse
-- I: enter "insert" (draw) mode: use left mouse to set cells alife and right
-     button to dead. Leave with "space". While in insert mode, use middle mouse
-     button to drag grid.
-- R: reset to 1:1 zoom
-- ESCAPE: open menu, o: open options menu
-- S: save game state to file (can be loaded with -l)
-- C: enter mark mode. Mark a rectangle with the mouse, when you
-     release the mouse buttonx it is being saved to an RLE file
-- D: toggle debug output 
-- Q: quit game
-`
-
-func (config *Config) SetupCamera() {
-	config.Zoomfactor = DEFAULT_ZOOMFACTOR / config.Cellsize
-
-	// calculate the initial cam pos. It is negative if the total grid
-	// size  is smaller than  the screen  in a centered  position, but
-	// it's zero if it's equal or larger than the screen.
-	config.InitialCamPos = make([]float64, 2)
-
-	config.InitialCamPos[0] = float64(((config.ScreenWidth - (config.Width * config.Cellsize)) / 2) * -1)
-	if config.Width*config.Cellsize >= config.ScreenWidth {
-		// must be positive if world wider than screen
-		config.InitialCamPos[0] = math.Abs(config.InitialCamPos[0])
-	}
-
-	// same for Y
-	config.InitialCamPos[1] = float64(((config.ScreenHeight - (config.Height * config.Cellsize)) / 2) * -1)
-	if config.Height*config.Cellsize > config.ScreenHeight {
-		config.InitialCamPos[1] = math.Abs(config.InitialCamPos[1])
-	}
-
-	// Calculate  zoom out factor, which  shows 100% of the  world. We
-	// need to reverse math.Pow(1.01,  $zoomfactor) to get the correct
-	// percentage of  the world to show.  I.e: with  a ScreenHeight of
-	// 384px and a world of 800px the factor to show 100% of the world
-	// is  -75: math.Log(384/800) / math.Log(1.01).  The 1.01 constant
-	// is being used in camera.go:worldMatrix().
-
-	// FIXME: determine if the diff is larger on width, then calc with
-	// width instead of height
-	config.ZoomOutFactor = int(
-		math.Log(float64(config.ScreenHeight)/(float64(config.Height)*float64(config.Cellsize))) /
-			math.Log(1.01))
-}
-
-// parse given window geometry and adjust game settings according to it
-func (config *Config) ParseGeom(geom string) error {
-	// force a geom
-	geometry := strings.Split(geom, "x")
-	if len(geometry) != 2 {
-		return errors.New("failed to parse -g parameters, expecting WIDTHxHEIGHT")
-	}
-
-	width, err := strconv.Atoi(geometry[0])
-	if err != nil {
-		return errors.New("failed to parse width, expecting integer")
-	}
-
-	height, err := strconv.Atoi(geometry[1])
-	if err != nil {
-		return errors.New("failed to parse height, expecting integer")
-	}
-
-	config.ScreenWidth = width
-	config.ScreenHeight = height
-
-	//config.Cellsize = DEFAULT_CELLSIZE
-
-	return nil
-}
-
-// check if we have  been given an RLE or LIF file  to load, then load
-// it and adjust game settings accordingly
-func (config *Config) ParseRLE(rlefile string) error {
-	if rlefile == "" {
-		return nil
-	}
-
-	var rleobj *rle.RLE
-
-	if strings.HasSuffix(rlefile, ".lif") {
-		lifobj, err := LoadLIF(rlefile)
-		if err != nil {
-			return err
-		}
-
-		rleobj = lifobj
-	} else {
-		rleobject, err := rle.GetRLE(rlefile)
-		if err != nil {
-			return err
-		}
-
-		rleobj = rleobject
-	}
-
-	if rleobj == nil {
-		return errors.New("failed to load pattern file (uncatched module error)")
-	}
-
-	config.RLE = rleobj
-
-	// adjust geometry if needed
-	if config.RLE.Width > config.Width || config.RLE.Height > config.Height {
-		config.Width = config.RLE.Width * 2
-		config.Height = config.RLE.Height * 2
-		config.Cellsize = config.ScreenWidth / config.Width
-	}
-
-	fmt.Printf("width: %d, screenwidth: %d, rlewidth: %d, cellsize: %d\n",
-		config.Width, config.ScreenWidth, config.RLE.Width, config.Cellsize)
-
-	// RLE needs an empty grid
-	config.Empty = true
-
-	// it may come with its own rule
-	if config.RLE.Rule != "" {
-		config.Rule = ParseGameRule(config.RLE.Rule)
-	}
-
-	return nil
-}
-
-func (config *Config) EnableCPUProfiling(filename string) error {
-	if filename == "" {
-		return nil
-	}
-
-	fd, err := os.Create(filename)
-	if err != nil {
-		return err
-	}
-
-	pprof.StartCPUProfile(fd)
-	defer pprof.StopCPUProfile()
-
-	return nil
-}
-
-func ParseCommandline() (*Config, error) {
-	config := Config{}
-
-	var (
-		rule, rlefile, geom string
-	)
-
-	// commandline params, most configure directly config flags
-	pflag.IntVarP(&config.Width, "width", "W", DEFAULT_GRID_WIDTH, "grid width in cells")
-	pflag.IntVarP(&config.Height, "height", "H", DEFAULT_GRID_HEIGHT, "grid height in cells")
-	pflag.IntVarP(&config.Cellsize, "cellsize", "c", 8, "cell size in pixels")
-	pflag.StringVarP(&geom, "geom", "G", DEFAULT_GEOM, "window geometry in WxH in pixels, overturns -c")
-
-	pflag.IntVarP(&config.Density, "density", "D", 10, "density of random cells")
-	pflag.IntVarP(&config.TPG, "ticks-per-generation", "t", 10,
-		"game speed: the higher the slower (default: 10)")
-
-	pflag.StringVarP(&rule, "rule", "r", "B3/S23", "game rule")
-	pflag.StringVarP(&rlefile, "pattern-file", "f", "", "RLE or LIF pattern file")
-
-	pflag.BoolVarP(&config.ShowVersion, "version", "v", false, "show version")
-	pflag.BoolVarP(&config.ShowGrid, "show-grid", "g", false, "draw grid lines")
-	pflag.BoolVarP(&config.ShowEvolution, "show-evolution", "s", false, "show evolution traces")
-
-	pflag.BoolVarP(&config.Paused, "paused", "p", false, "do not start simulation (use space to start)")
-	pflag.BoolVarP(&config.Debug, "debug", "d", false, "show debug info")
-	pflag.BoolVarP(&config.Empty, "empty", "e", false, "start with an empty screen")
-
-	// style
-	pflag.StringVarP(&config.Theme, "theme", "T", DEFAULT_THEME, "color theme: standard, dark, light (default: standard)")
-
-	pflag.BoolVarP(&config.Wrap, "wrap-around", "w", false, "wrap around grid mode")
-	pflag.BoolVarP(&config.UseShader, "use-shader", "k", false, "use shader for cell rendering")
-
-	pflag.StringVarP(&config.ProfileFile, "profile-file", "", "", "enable profiling")
-
-	pflag.Parse()
-
-	err := config.ParseGeom(geom)
-	if err != nil {
-		return nil, err
-	}
-
-	err = config.ParseRLE(rlefile)
-	if err != nil {
-		return nil, err
-	}
-
-	// load  rule from commandline  when no  rule came from  RLE file,
-	// default is B3/S23, aka conways game of life
-	if config.Rule == nil {
-		config.Rule = ParseGameRule(rule)
-	}
-
-	config.SetupCamera()
-
-	config.ThemeManager = NewThemeManager(config.Theme, config.Cellsize)
-
-	//repr.Println(config)
-	return &config, nil
-}
-
-func (config *Config) TogglePaused() {
-	config.Paused = !config.Paused
-}
-
-func (config *Config) ToggleDebugging() {
-	config.Debug = !config.Debug
-}
-
-func (config *Config) SwitchTheme(theme string) {
-	config.ThemeManager.SetCurrentTheme(theme)
-	config.RestartCache = true
-}
-
-func (config *Config) ToggleGridlines() {
-	config.ShowGrid = !config.ShowGrid
-	config.RestartCache = true
-}
-
-func (config *Config) ToggleEvolution() {
-	config.ShowEvolution = !config.ShowEvolution
-}
-
-func (config *Config) ToggleWrap() {
-	config.Wrap = !config.Wrap
-}

src/game.go

@@ -1,82 +0,0 @@
-package main
-
-import (
-	"github.com/hajimehoshi/ebiten/v2"
-)
-
-type Game struct {
-	ScreenWidth, ScreenHeight, ReadlWidth, Cellsize int
-	Scenes                                          map[SceneName]Scene
-	CurrentScene                                    SceneName
-	Config                                          *Config
-	Scale                                           float32
-}
-
-func NewGame(config *Config, startscene SceneName) *Game {
-	game := &Game{
-		Config:       config,
-		Scenes:       map[SceneName]Scene{},
-		ScreenWidth:  config.ScreenWidth,
-		ScreenHeight: config.ScreenHeight,
-	}
-
-	// setup scene[s]
-	game.CurrentScene = startscene
-	game.Scenes[Play] = NewPlayScene(game, config)
-	game.Scenes[Menu] = NewMenuScene(game, config)
-	game.Scenes[Options] = NewOptionsScene(game, config)
-	game.Scenes[Keybindings] = NewKeybindingsScene(game, config)
-
-	// setup environment
-	ebiten.SetWindowSize(game.ScreenWidth, game.ScreenHeight)
-	ebiten.SetWindowTitle("golsky - conway's game of life")
-	ebiten.SetWindowResizingMode(ebiten.WindowResizingModeEnabled)
-	ebiten.SetScreenClearedEveryFrame(true)
-
-	return game
-}
-
-func (game *Game) GetCurrentScene() Scene {
-	return game.Scenes[game.CurrentScene]
-}
-
-func (game *Game) Layout(outsideWidth, outsideHeight int) (int, int) {
-	game.ReadlWidth = outsideWidth
-	game.Scale = float32(game.ScreenWidth) / float32(outsideWidth)
-	return game.ScreenWidth, game.ScreenHeight
-}
-
-func (game *Game) Update() error {
-	scene := game.GetCurrentScene()
-
-	if quit := scene.Update(); quit != nil {
-		return quit
-	}
-
-	next := scene.GetNext()
-	if next != game.CurrentScene {
-		game.Scenes[next].SetPrevious(game.CurrentScene)
-		scene.ResetNext()
-		game.CurrentScene = next
-	}
-
-	return nil
-}
-
-func (game *Game) Draw(screen *ebiten.Image) {
-	// first draw primary scene[s], although there are only 1
-	for current, scene := range game.Scenes {
-		if scene.IsPrimary() {
-			// primary scenes always draw
-			scene.Draw(screen)
-
-			if current == game.CurrentScene {
-				// avoid to redraw it in the next step
-				return
-			}
-		}
-	}
-
-	scene := game.GetCurrentScene()
-	scene.Draw(screen)
-}

src/generics.go

@@ -1,19 +0,0 @@
-package main
-
-// find an item in a list, generic variant
-func Contains[E comparable](s []E, v E) bool {
-	for _, vs := range s {
-		if v == vs {
-			return true
-		}
-	}
-
-	return false
-}
-
-func Exists[K comparable, V any](m map[K]V, v K) bool {
-	if _, ok := m[v]; ok {
-		return true
-	}
-	return false
-}

src/grid.go

@@ -1,241 +0,0 @@
-package main
-
-import (
-	"bufio"
-	"errors"
-	"fmt"
-	"math/rand"
-	"os"
-	"strings"
-	"time"
-
-	"github.com/tlinden/golsky/rle"
-)
-
-type Grid struct {
-	Data                   [][]bool
-	Width, Height, Density int
-	Empty                  bool
-}
-
-// Create new empty grid and allocate Data according to provided dimensions
-func NewGrid(width, height, density int, empty bool) *Grid {
-	grid := &Grid{
-		Height:  height,
-		Width:   width,
-		Density: density,
-		Data:    make([][]bool, height),
-		Empty:   empty,
-	}
-
-	for y := 0; y < height; y++ {
-		grid.Data[y] = make([]bool, width)
-	}
-
-	return grid
-}
-
-// Create a new 1:1 instance
-func (grid *Grid) Clone() *Grid {
-	newgrid := &Grid{}
-
-	newgrid.Width = grid.Width
-	newgrid.Height = grid.Height
-	newgrid.Data = grid.Data
-
-	return newgrid
-}
-
-// copy data
-func (grid *Grid) Copy(other *Grid) {
-	for y := range grid.Data {
-		for x := range grid.Data[y] {
-			other.Data[y][x] = grid.Data[y][x]
-		}
-	}
-}
-
-// delete all contents
-func (grid *Grid) Clear() {
-	for y := range grid.Data {
-		for x := range grid.Data[y] {
-			grid.Data[y][x] = false
-		}
-	}
-}
-
-// initialize with random life cells using the given density
-func (grid *Grid) FillRandom() {
-	if !grid.Empty {
-		for y := range grid.Data {
-			for x := range grid.Data[y] {
-				if rand.Intn(grid.Density) == 1 {
-					grid.Data[y][x] = true
-				}
-			}
-		}
-	}
-}
-
-func (grid *Grid) Dump() {
-	for y := 0; y < grid.Height; y++ {
-		for x := 0; x < grid.Width; x++ {
-			if grid.Data[y][x] {
-				fmt.Print("XX")
-			} else {
-				fmt.Print("  ")
-			}
-		}
-		fmt.Println()
-	}
-}
-
-// initialize using a given RLE pattern
-func (grid *Grid) LoadRLE(pattern *rle.RLE) {
-	if pattern != nil {
-		startX := (grid.Width / 2) - (pattern.Width / 2)
-		startY := (grid.Height / 2) - (pattern.Height / 2)
-		var y, x int
-
-		for rowIndex, patternRow := range pattern.Pattern {
-			for colIndex := range patternRow {
-				if pattern.Pattern[rowIndex][colIndex] > 0 {
-					x = colIndex + startX
-					y = rowIndex + startY
-
-					grid.Data[y][x] = true
-				}
-			}
-		}
-
-		//grid.Dump()
-	}
-}
-
-// load a lif file parameters like R and P are not supported yet
-func LoadLIF(filename string) (*rle.RLE, error) {
-	fd, err := os.Open(filename)
-	if err != nil {
-		return nil, err
-	}
-
-	scanner := bufio.NewScanner(fd)
-
-	scanner.Split(bufio.ScanLines)
-
-	gothead := false
-
-	grid := &rle.RLE{}
-
-	for scanner.Scan() {
-		line := scanner.Text()
-		items := strings.Split(line, "")
-
-		if len(items) < 0 {
-			continue
-		}
-
-		if strings.Contains(line, "# r") {
-			parts := strings.Split(line, " ")
-			if len(parts) == 2 {
-				grid.Rule = parts[1]
-			}
-
-			continue
-		}
-
-		if items[0] == "#" {
-			if gothead {
-				break
-			}
-
-			continue
-		}
-
-		gothead = true
-
-		row := make([]int, len(items))
-
-		for idx, item := range items {
-			switch item {
-			case ".":
-				row[idx] = 0
-			case "o":
-				fallthrough
-			case "*":
-				row[idx] = 1
-			default:
-				return nil, errors.New("cells must be . or o")
-			}
-		}
-
-		grid.Pattern = append(grid.Pattern, row)
-	}
-
-	// sanity check the grid
-	explen := 0
-	rows := 0
-	first := true
-	for _, row := range grid.Pattern {
-		length := len(row)
-
-		if first {
-			explen = length
-			first = false
-		}
-
-		if explen != length {
-			return nil, fmt.Errorf(
-				fmt.Sprintf("all rows must be in the same length, got: %d, expected: %d",
-					length, explen))
-		}
-
-		rows++
-	}
-
-	grid.Width = explen
-	grid.Height = rows
-
-	return grid, nil
-}
-
-// save  the contents  of  the  whole grid  as  a  simple lif  alike
-// file. One line per row, 0 for dead and 1 for life cell.
-// file format: https://conwaylife.com/wiki/Life_1.05
-func (grid *Grid) SaveState(filename, rule string) error {
-	file, err := os.Create(filename)
-	if err != nil {
-		return fmt.Errorf("failed to open state file: %w", err)
-	}
-	defer file.Close()
-
-	fmt.Fprintf(file, "#Life 1.05\n#R %s\n#D golsky state file\n#P -1 -1\n", rule)
-
-	for y := range grid.Data {
-		for _, cell := range grid.Data[y] {
-			row := "."
-			if cell {
-				row = "o"
-			}
-
-			_, err := file.WriteString(row)
-			if err != nil {
-				return fmt.Errorf("failed to write to state file: %w", err)
-			}
-		}
-		file.WriteString("\n")
-	}
-
-	return nil
-}
-
-// generate filenames for dumps
-func GetFilename(generations int64) string {
-	now := time.Now()
-	return fmt.Sprintf("dump-%s-%d.lif", now.Format("20060102150405"), generations)
-}
-
-func GetFilenameRLE(generations int64) string {
-	now := time.Now()
-	return fmt.Sprintf("rect-%s-%d.rle", now.Format("20060102150405"), generations)
-}

src/keybindings.go

@@ -1,98 +0,0 @@
-package main
-
-import (
-	"image/color"
-
-	"github.com/ebitenui/ebitenui"
-	"github.com/ebitenui/ebitenui/widget"
-	"github.com/hajimehoshi/ebiten/v2"
-	"github.com/hajimehoshi/ebiten/v2/inpututil"
-)
-
-type SceneKeybindings struct {
-	Game      *Game
-	Config    *Config
-	Next      SceneName
-	Prev      SceneName
-	Whoami    SceneName
-	Ui        *ebitenui.UI
-	FontColor color.RGBA
-	First     bool
-}
-
-func NewKeybindingsScene(game *Game, config *Config) Scene {
-	scene := &SceneKeybindings{
-		Whoami:    Keybindings,
-		Game:      game,
-		Next:      Keybindings,
-		Config:    config,
-		FontColor: color.RGBA{255, 30, 30, 0xff},
-	}
-
-	scene.Init()
-
-	return scene
-}
-
-func (scene *SceneKeybindings) GetNext() SceneName {
-	return scene.Next
-}
-
-func (scene *SceneKeybindings) SetPrevious(prev SceneName) {
-	scene.Prev = prev
-}
-
-func (scene *SceneKeybindings) ResetNext() {
-	scene.Next = scene.Whoami
-}
-
-func (scene *SceneKeybindings) SetNext(next SceneName) {
-	scene.Next = next
-}
-
-func (scene *SceneKeybindings) Update() error {
-	scene.Ui.Update()
-
-	if inpututil.IsKeyJustPressed(ebiten.KeyEscape) || inpututil.IsKeyJustPressed(ebiten.KeyQ) {
-		scene.Config.DelayedStart = false
-		scene.Leave()
-	}
-
-	return nil
-
-}
-
-func (scene *SceneKeybindings) IsPrimary() bool {
-	return false
-}
-
-func (scene *SceneKeybindings) Draw(screen *ebiten.Image) {
-	scene.Ui.Draw(screen)
-}
-
-func (scene *SceneKeybindings) Leave() {
-	scene.SetNext(Play)
-}
-
-func (scene *SceneKeybindings) Init() {
-	rowContainer := NewRowContainer("Key Bindings")
-
-	bindings := widget.NewText(
-		widget.TextOpts.WidgetOpts(widget.WidgetOpts.LayoutData(widget.RowLayoutData{
-			Stretch: true,
-		})),
-		widget.TextOpts.Text(KEYBINDINGS, *FontRenderer.FontSmall, color.NRGBA{0xdf, 0xf4, 0xff, 0xff}))
-
-	cancel := NewMenuButton("Back",
-		func(args *widget.ButtonClickedEventArgs) {
-			scene.Leave()
-		})
-
-	rowContainer.AddChild(bindings)
-	rowContainer.AddChild(cancel)
-
-	scene.Ui = &ebitenui.UI{
-		Container: rowContainer.Container(),
-	}
-
-}

src/loader-fonts.go

@@ -1,113 +0,0 @@
-package main
-
-import (
-	"log"
-
-	"github.com/golang/freetype/truetype"
-	"github.com/tinne26/etxt"
-	"golang.org/x/image/font"
-)
-
-var FontRenderer = LoadFonts("assets/fonts")
-
-const (
-	GameFont       string = "NotoSans-Regular"
-	GameFontETXT   string = "Noto Sans"
-	FontSizeBig    int    = 48
-	FontSizeNormal int    = 24
-	FontSizeSmall  int    = 12
-)
-
-type Texter struct {
-	Renderer   *etxt.Renderer
-	FontNormal *font.Face
-	FontBig    *font.Face
-	FontSmall  *font.Face
-}
-
-func LoadFonts(dir string) Texter {
-	// load the font for use with ebitenui
-	fontbytes, err := assetfs.ReadFile(dir + "/" + GameFont + ".ttf")
-	if err != nil {
-		log.Fatal(err)
-	}
-
-	gamefont, err := truetype.Parse(fontbytes)
-	if err != nil {
-		log.Fatal(err)
-	}
-
-	gameface := truetype.NewFace(gamefont, &truetype.Options{
-		Size:    float64(FontSizeNormal),
-		DPI:     72,
-		Hinting: font.HintingFull,
-	})
-
-	biggameface := truetype.NewFace(gamefont, &truetype.Options{
-		Size:    float64(FontSizeBig),
-		DPI:     72,
-		Hinting: font.HintingFull,
-	})
-
-	smallgameface := truetype.NewFace(gamefont, &truetype.Options{
-		Size:    float64(FontSizeSmall),
-		DPI:     72,
-		Hinting: font.HintingFull,
-	})
-
-	// load the font for use with etxt
-	fontlib := etxt.NewFontLibrary()
-	_, _, err = fontlib.ParseEmbedDirFonts(dir, assetfs)
-	if err != nil {
-		log.Fatalf("Error while loading fonts: %s", err.Error())
-	}
-
-	/*
-		err = fontlib.EachFont(
-			func(fontName string, font *etxt.Font) error {
-				fmt.Printf("font: %s\n", fontName)
-				return nil
-			})
-		if err != nil {
-			log.Fatal(err)
-		}
-	*/
-
-	if !fontlib.HasFont(GameFontETXT) {
-		log.Fatal("missing font: " + GameFontETXT)
-	}
-
-	err = fontlib.EachFont(checkMissingRunes)
-	if err != nil {
-		log.Fatal(err)
-	}
-
-	renderer := etxt.NewStdRenderer()
-
-	glyphsCache := etxt.NewDefaultCache(10 * 1024 * 1024) // 10MB
-	renderer.SetCacheHandler(glyphsCache.NewHandler())
-	renderer.SetFont(fontlib.GetFont(GameFontETXT))
-
-	return Texter{
-		Renderer:   renderer,
-		FontNormal: &gameface,
-		FontBig:    &biggameface,
-		FontSmall:  &smallgameface,
-	}
-}
-
-// helper function used with FontLibrary.EachFont to make sure
-// all loaded fonts contain the characters or alphabet we want
-func checkMissingRunes(name string, font *etxt.Font) error {
-	const letters = "ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz"
-	const symbols = "0123456789 .,;:!?-()[]{}_&#@"
-
-	missing, err := etxt.GetMissingRunes(font, letters+symbols)
-	if err != nil {
-		return err
-	}
-	if len(missing) > 0 {
-		log.Fatalf("Font '%s' missing runes: %s", name, string(missing))
-	}
-	return nil
-}

src/loader-shaders.go

@@ -1,49 +0,0 @@
-package main
-
-import (
-	"bytes"
-	"log"
-	"log/slog"
-	"path"
-	"strings"
-
-	"github.com/hajimehoshi/ebiten/v2"
-)
-
-type ShaderRegistry map[string]*ebiten.Shader
-
-var Shaders = LoadShaders("assets/shaders")
-
-func LoadShaders(dir string) ShaderRegistry {
-	shaders := ShaderRegistry{}
-
-	entries, err := assetfs.ReadDir(dir)
-	if err != nil {
-		log.Fatalf("failed to read shaders dir %s: %s", dir, err)
-	}
-
-	for _, file := range entries {
-		path := path.Join(dir, file.Name())
-		fd, err := assetfs.Open(path)
-		if err != nil {
-			log.Fatalf("failed to open shader file %s: %s", file.Name(), err)
-		}
-		defer fd.Close()
-
-		name := strings.TrimSuffix(file.Name(), ".kg")
-
-		buf := new(bytes.Buffer)
-		buf.ReadFrom(fd)
-
-		shader, err := ebiten.NewShader([]byte(buf.Bytes()))
-		if err != nil {
-			log.Fatal(err)
-		}
-
-		shaders[name] = shader
-
-		slog.Debug("loaded shader asset", "path", path)
-	}
-
-	return shaders
-}

src/loader-sprites.go

@@ -1,69 +0,0 @@
-package main
-
-import (
-	"embed"
-	"image"
-	_ "image/png"
-	"io/fs"
-	"log"
-	"path"
-	"strings"
-
-	"github.com/hajimehoshi/ebiten/v2"
-)
-
-// Maps image name to image data
-type AssetRegistry map[string]*ebiten.Image
-
-// A helper to pass the registry easier around
-type assetData struct {
-	Registry AssetRegistry
-}
-
-//go:embed assets/sprites/*.png assets/fonts/*.ttf assets/shaders/*.kg
-var assetfs embed.FS
-
-// Called at build time, creates the global asset and animation registries
-var Assets = LoadImages("assets/sprites")
-
-// load pngs and json files
-func LoadImages(dir string) AssetRegistry {
-	Registry := AssetRegistry{}
-
-	// we use embed.FS to iterate over all files in ./assets/
-	entries, err := assetfs.ReadDir(dir)
-	if err != nil {
-		log.Fatalf("failed to read assets dir %s: %s", dir, err)
-	}
-
-	for _, imagefile := range entries {
-		path := path.Join(dir, imagefile.Name())
-
-		fd, err := assetfs.Open(path)
-		if err != nil {
-			log.Fatalf("failed to open file %s: %s", imagefile.Name(), err)
-		}
-		defer fd.Close()
-
-		switch {
-		case strings.HasSuffix(path, ".png"):
-			name, image := ReadImage(imagefile, fd)
-			Registry[name] = image
-		}
-	}
-
-	return Registry
-}
-
-func ReadImage(imagefile fs.DirEntry, fd fs.File) (string, *ebiten.Image) {
-	name := strings.TrimSuffix(imagefile.Name(), ".png")
-
-	img, _, err := image.Decode(fd)
-	if err != nil {
-		log.Fatalf("failed to decode image %s: %s", imagefile.Name(), err)
-	}
-
-	image := ebiten.NewImageFromImage(img)
-
-	return name, image
-}

src/main.go

@@ -1,55 +0,0 @@
-package main
-
-import (
-	"fmt"
-	"log"
-	"os"
-	"runtime/pprof"
-
-	_ "net/http/pprof"
-
-	"github.com/hajimehoshi/ebiten/v2"
-)
-
-func main() {
-	var directstart bool
-
-	if len(os.Args) > 1 {
-		directstart = true
-	}
-
-	config, err := ParseCommandline()
-	if err != nil {
-		log.Fatal(err)
-	}
-
-	if config.ShowVersion {
-		fmt.Printf("This is golsky version %s\n", VERSION)
-		os.Exit(0)
-	}
-
-	start := Play
-	if !directstart {
-		start = Menu
-		config.DelayedStart = true
-	}
-	game := NewGame(config, SceneName(start))
-
-	if config.ProfileFile != "" {
-		// enable  cpu profiling. Do  NOT use q  to stop the  game but
-		// close the window to get a profile
-		fd, err := os.Create(config.ProfileFile)
-		if err != nil {
-			log.Fatal(err)
-		}
-		defer fd.Close()
-
-		pprof.StartCPUProfile(fd)
-		defer pprof.StopCPUProfile()
-	}
-
-	// main loop
-	if err := ebiten.RunGame(game); err != nil {
-		log.Fatal(err)
-	}
-}

src/menu.go

@@ -1,145 +0,0 @@
-package main
-
-import (
-	"image/color"
-
-	"github.com/ebitenui/ebitenui"
-	"github.com/ebitenui/ebitenui/widget"
-	"github.com/hajimehoshi/ebiten/v2"
-	"github.com/hajimehoshi/ebiten/v2/inpututil"
-)
-
-type SceneMenu struct {
-	Game      *Game
-	Config    *Config
-	Next      SceneName
-	Prev      SceneName
-	Whoami    SceneName
-	Ui        *ebitenui.UI
-	FontColor color.RGBA
-	First     bool
-	Exit      bool
-}
-
-func NewMenuScene(game *Game, config *Config) Scene {
-	scene := &SceneMenu{
-		Whoami:    Menu,
-		Game:      game,
-		Next:      Menu,
-		Config:    config,
-		FontColor: color.RGBA{255, 30, 30, 0xff},
-	}
-
-	scene.Init()
-
-	return scene
-}
-
-func (scene *SceneMenu) GetNext() SceneName {
-	return scene.Next
-}
-
-func (scene *SceneMenu) SetPrevious(prev SceneName) {
-	scene.Prev = prev
-}
-
-func (scene *SceneMenu) ResetNext() {
-	scene.Next = scene.Whoami
-}
-
-func (scene *SceneMenu) SetNext(next SceneName) {
-	scene.Next = next
-}
-
-func (scene *SceneMenu) Update() error {
-	scene.Ui.Update()
-
-	if scene.Exit {
-		return ebiten.Termination
-	}
-
-	if inpututil.IsKeyJustPressed(ebiten.KeyEscape) || inpututil.IsKeyJustPressed(ebiten.KeyQ) {
-		scene.Config.DelayedStart = false
-		scene.Leave()
-	}
-
-	return nil
-
-}
-
-func (scene *SceneMenu) IsPrimary() bool {
-	return false
-}
-
-func (scene *SceneMenu) Draw(screen *ebiten.Image) {
-	scene.Ui.Draw(screen)
-}
-
-func (scene *SceneMenu) Leave() {
-	scene.SetNext(Play)
-}
-
-func (scene *SceneMenu) Init() {
-	rowContainer := NewRowContainer("Main Menu")
-
-	empty := NewMenuButton("Start with empty grid",
-		func(args *widget.ButtonClickedEventArgs) {
-			scene.Config.Empty = true
-			scene.Config.Restart = true
-			scene.Leave()
-		})
-
-	random := NewMenuButton("Start with random patterns",
-		func(args *widget.ButtonClickedEventArgs) {
-			scene.Config.Empty = false
-			scene.Config.Restart = true
-			scene.Leave()
-		})
-
-	copy := NewMenuButton("Save Copy as RLE",
-		func(args *widget.ButtonClickedEventArgs) {
-			scene.Config.Markmode = true
-			scene.Config.Paused = true
-			scene.Leave()
-		})
-
-	options := NewMenuButton("Options",
-		func(args *widget.ButtonClickedEventArgs) {
-			scene.SetNext(Options)
-		})
-
-	bindings := NewMenuButton("Show Key Bindings",
-		func(args *widget.ButtonClickedEventArgs) {
-			scene.SetNext(Keybindings)
-		})
-
-	separator1 := NewSeparator(3)
-	separator2 := NewSeparator(3)
-	separator3 := NewSeparator(10)
-
-	cancel := NewMenuButton("Back",
-		func(args *widget.ButtonClickedEventArgs) {
-			scene.Leave()
-		})
-
-	quit := NewMenuButton("Exit Golsky",
-		func(args *widget.ButtonClickedEventArgs) {
-			scene.Exit = true
-		})
-
-	rowContainer.AddChild(empty)
-	rowContainer.AddChild(random)
-	rowContainer.AddChild(separator1)
-	rowContainer.AddChild(options)
-	rowContainer.AddChild(copy)
-	rowContainer.AddChild(bindings)
-	rowContainer.AddChild(separator2)
-	rowContainer.AddChild(cancel)
-	rowContainer.AddChild(separator3)
-	rowContainer.AddChild(quit)
-
-	scene.Ui = &ebitenui.UI{
-		Container: rowContainer.Container(),
-	}
-
-}

src/options.go

@@ -1,157 +0,0 @@
-package main
-
-import (
-	"image/color"
-
-	"github.com/ebitenui/ebitenui"
-	"github.com/ebitenui/ebitenui/widget"
-	"github.com/hajimehoshi/ebiten/v2"
-	"github.com/hajimehoshi/ebiten/v2/inpututil"
-)
-
-type SceneOptions struct {
-	Game      *Game
-	Config    *Config
-	Next      SceneName
-	Prev      SceneName
-	Whoami    SceneName
-	Ui        *ebitenui.UI
-	FontColor color.RGBA
-}
-
-func NewOptionsScene(game *Game, config *Config) Scene {
-	scene := &SceneOptions{
-		Whoami:    Options,
-		Game:      game,
-		Next:      Options,
-		Config:    config,
-		FontColor: color.RGBA{255, 30, 30, 0xff},
-	}
-
-	scene.Init()
-
-	return scene
-}
-
-func (scene *SceneOptions) GetNext() SceneName {
-	return scene.Next
-}
-
-func (scene *SceneOptions) SetPrevious(prev SceneName) {
-	scene.Prev = prev
-}
-
-func (scene *SceneOptions) ResetNext() {
-	scene.Next = scene.Whoami
-}
-
-func (scene *SceneOptions) SetNext(next SceneName) {
-	scene.Next = next
-}
-
-func (scene *SceneOptions) IsPrimary() bool {
-	return false
-}
-
-func (scene *SceneOptions) Update() error {
-	scene.Ui.Update()
-
-	if inpututil.IsKeyJustPressed(ebiten.KeyEscape) || inpututil.IsKeyJustPressed(ebiten.KeyQ) {
-		scene.SetNext(Play)
-	}
-
-	return nil
-
-}
-
-func (scene *SceneOptions) Draw(screen *ebiten.Image) {
-	scene.Ui.Draw(screen)
-}
-
-func (scene *SceneOptions) SetInitialValue(w *widget.LabeledCheckbox, value bool) {
-	if value {
-		w.SetState(
-			widget.WidgetChecked,
-		)
-	}
-}
-
-func (scene *SceneOptions) Init() {
-	rowContainer := NewRowContainer("Options")
-
-	pause := NewCheckbox("Pause",
-		scene.Config.Paused,
-		func(args *widget.CheckboxChangedEventArgs) {
-			scene.Config.TogglePaused()
-		})
-
-	debugging := NewCheckbox("Debugging",
-		scene.Config.Debug,
-		func(args *widget.CheckboxChangedEventArgs) {
-			scene.Config.ToggleDebugging()
-		})
-
-	gridlines := NewCheckbox("Show grid lines",
-		scene.Config.ShowGrid,
-		func(args *widget.CheckboxChangedEventArgs) {
-			scene.Config.ToggleGridlines()
-		})
-
-	evolution := NewCheckbox("Show evolution traces",
-		scene.Config.ShowEvolution,
-		func(args *widget.CheckboxChangedEventArgs) {
-			scene.Config.ToggleEvolution()
-		})
-
-	wrap := NewCheckbox("Wrap around edges",
-		scene.Config.Wrap,
-		func(args *widget.CheckboxChangedEventArgs) {
-			scene.Config.ToggleWrap()
-		})
-
-	themenames := make([]string, len(THEMES))
-	i := 0
-	for name := range THEMES {
-		themenames[i] = name
-		i++
-	}
-
-	themes := NewCombobox(
-		themenames,
-		scene.Config.Theme,
-		func(args *widget.ListComboButtonEntrySelectedEventArgs) {
-			scene.Config.SwitchTheme(args.Entry.(ListEntry).Name)
-		})
-
-	themelabel := NewLabel("Themes")
-	combocontainer := NewColumnContainer()
-	combocontainer.AddChild(themes)
-	combocontainer.AddChild(themelabel)
-
-	separator := NewSeparator(3)
-	separator2 := NewSeparator(3)
-
-	cancel := NewMenuButton("Close",
-		func(args *widget.ButtonClickedEventArgs) {
-			scene.SetNext(scene.Prev)
-		})
-
-	rowContainer.AddChild(pause)
-	rowContainer.AddChild(debugging)
-	rowContainer.AddChild(gridlines)
-	rowContainer.AddChild(evolution)
-	rowContainer.AddChild(wrap)
-
-	rowContainer.AddChild(separator)
-
-	rowContainer.AddChild(combocontainer)
-
-	rowContainer.AddChild(separator2)
-
-	rowContainer.AddChild(cancel)
-
-	scene.Ui = &ebitenui.UI{
-		Container: rowContainer.Container(),
-	}
-
-}

src/play.go

@@ -1,688 +0,0 @@
-package main
-
-import (
-	"fmt"
-	"image"
-	"log"
-	"unsafe"
-
-	"github.com/hajimehoshi/ebiten/v2"
-	"github.com/hajimehoshi/ebiten/v2/inpututil"
-	"github.com/hajimehoshi/ebiten/v2/vector"
-	"github.com/tlinden/golsky/rle"
-	"golang.org/x/image/math/f64"
-)
-
-type Images struct {
-	Black, White, Age1, Age2, Age3, Age4, Old *ebiten.Image
-}
-
-const (
-	DEBUG_FORMAT = "FPS: %0.2f, TPG: %d, M: %0.2fMB, Generations: %d\nScale: %.02f, Zoom: %d, Cam: %.02f,%.02f Cursor: %d,%d  %s"
-)
-
-type ScenePlay struct {
-	Game   *Game
-	Config *Config
-	Next   SceneName
-	Prev   SceneName
-	Whoami SceneName
-
-	Clear bool
-
-	Grids         []*Grid       // 2 grids: one current, one next
-	History       [][]int64     // holds state of past dead cells for evolution traces
-	Index         int           // points to current grid
-	Generations   int64         // Stats
-	TicksElapsed  int           // tick counter for game speed
-	Camera        Camera        // for zoom+move
-	World, Cache  *ebiten.Image // actual image we render to
-	WheelTurned   bool          // when user turns wheel multiple times, zoom faster
-	Dragging      bool          // middle mouse is pressed, move canvas
-	LastCursorPos []float64     // used to check if the user is dragging
-	MarkTaken     bool          // true when mouse1 pressed
-	MarkDone      bool          // true when mouse1 released, copy cells between Mark+Point
-	Mark, Point   image.Point   // area to marks+save
-	RunOneStep    bool          // mutable flags from config
-	TPG           int           // current game speed (ticks per game)
-	Theme         Theme
-}
-
-func NewPlayScene(game *Game, config *Config) Scene {
-	scene := &ScenePlay{
-		Whoami:     Play,
-		Game:       game,
-		Next:       Play,
-		Config:     config,
-		TPG:        config.TPG,
-		RunOneStep: config.RunOneStep,
-	}
-
-	scene.Init()
-
-	return scene
-}
-
-func (scene *ScenePlay) IsPrimary() bool {
-	return true
-}
-
-func (scene *ScenePlay) GetNext() SceneName {
-	return scene.Next
-}
-
-func (scene *ScenePlay) SetPrevious(prev SceneName) {
-	scene.Prev = prev
-}
-
-func (scene *ScenePlay) ResetNext() {
-	scene.Next = scene.Whoami
-}
-
-func (scene *ScenePlay) SetNext(next SceneName) {
-	scene.Next = next
-}
-
-func (scene *ScenePlay) CheckRule(state bool, neighbors int) bool {
-	var nextstate bool
-
-	// The standard Scene of Life is symbolized in rule-string notation
-	// as B3/S23 (23/3 here).  A cell  is born if it has exactly three
-	// neighbors,  survives if it  has two or three  living neighbors,
-	// and  dies otherwise. The first  number, or list of  numbers, is
-	// what is required for a dead cell to be born.
-
-	if !state && Contains(scene.Config.Rule.Birth, neighbors) {
-		nextstate = Alive
-	} else if state && Contains(scene.Config.Rule.Death, neighbors) {
-		nextstate = Alive
-	} else {
-		nextstate = Dead
-	}
-
-	return nextstate
-}
-
-// Update all cells according to the current rule
-func (scene *ScenePlay) UpdateCells() {
-	// count ticks so we know when to actually run
-	scene.TicksElapsed++
-
-	if scene.TPG > scene.TicksElapsed {
-		// need to sleep a little more
-		return
-	}
-
-	// next grid index, we just xor 0|1 to 1|0
-	next := scene.Index ^ 1
-
-	// compute life status of cells
-	for y := 0; y < scene.Config.Height; y++ {
-		for x := 0; x < scene.Config.Width; x++ {
-			state := scene.Grids[scene.Index].Data[y][x] // 0|1 == dead or alive
-			neighbors := scene.CountNeighbors(x, y)      // alive neighbor count
-
-			// actually apply the current rules
-			nextstate := scene.CheckRule(state, neighbors)
-
-			// change state of current cell in next grid
-			scene.Grids[next].Data[y][x] = nextstate
-
-			if scene.Config.ShowEvolution {
-				// set history  to current generation so we  can infer the
-				// age of the cell's state  during rendering and use it to
-				// deduce the color to use if evolution tracing is enabled
-				// 60FPS:
-				if state != nextstate {
-					scene.History[y][x] = scene.Generations
-				}
-
-				// 10FPS:
-				//scene.History.Data[y][x] = (state ^ (1 ^ nextstate)) * (scene.Generations - scene.History.Data[y][x])
-			}
-		}
-	}
-
-	// switch grid for rendering
-	scene.Index ^= 1
-
-	// global stats counter
-	scene.Generations++
-
-	if scene.Config.RunOneStep {
-		// setp-wise mode, halt the game
-		scene.Config.RunOneStep = false
-	}
-
-	// reset speed counter
-	scene.TicksElapsed = 0
-}
-
-func (scene *ScenePlay) Reset() {
-	scene.Config.Paused = true
-	scene.InitGrid()
-	scene.Config.Paused = false
-}
-
-// check user input
-func (scene *ScenePlay) CheckExit() error {
-	if inpututil.IsKeyJustPressed(ebiten.KeyQ) {
-		return ebiten.Termination
-	}
-
-	return nil
-}
-
-func (scene *ScenePlay) CheckInput() {
-	// primary functions, always available
-	switch {
-	case inpututil.IsKeyJustPressed(ebiten.KeyEscape):
-		scene.SetNext(Menu)
-	case inpututil.IsKeyJustPressed(ebiten.KeyO):
-		scene.SetNext(Options)
-	case inpututil.IsKeyJustPressed(ebiten.KeyC):
-		scene.Config.Markmode = true
-		scene.Config.Drawmode = false
-		scene.Config.Paused = true
-	case inpututil.IsKeyJustPressed(ebiten.KeyI):
-		scene.Config.Drawmode = true
-		scene.Config.Paused = true
-	}
-
-	if scene.Config.Markmode {
-		// no need to check any more input in mark mode
-		return
-	}
-
-	switch {
-	case inpututil.IsKeyJustPressed(ebiten.KeySpace) || inpututil.IsKeyJustPressed(ebiten.KeyEnter):
-		scene.Config.TogglePaused()
-	case inpututil.IsKeyJustPressed(ebiten.KeyPageDown):
-		if scene.TPG < 120 {
-			scene.TPG++
-		}
-	case inpututil.IsKeyJustPressed(ebiten.KeyPageUp):
-		if scene.TPG >= 1 {
-			scene.TPG--
-		}
-	case inpututil.IsKeyJustPressed(ebiten.KeyS):
-		scene.SaveState()
-	case inpututil.IsKeyJustPressed(ebiten.KeyD):
-		scene.Config.Debug = !scene.Config.Debug
-	}
-
-	if scene.Config.Paused {
-		if inpututil.IsKeyJustPressed(ebiten.KeyN) {
-			scene.Config.RunOneStep = true
-		}
-	}
-}
-
-func (scene *ScenePlay) CheckDrawingInput() {
-	if scene.Config.Drawmode {
-		switch {
-		case ebiten.IsMouseButtonPressed(ebiten.MouseButtonLeft):
-			scene.ToggleCellOnCursorPos(Alive)
-		case ebiten.IsMouseButtonPressed(ebiten.MouseButtonRight):
-			scene.ToggleCellOnCursorPos(Dead)
-		case inpututil.IsKeyJustPressed(ebiten.KeyEscape):
-			scene.Config.Drawmode = false
-		}
-	}
-}
-
-// Check dragging input.  move the canvas with the  mouse while pressing
-// the middle mouse button, zoom in and out using the wheel.
-func (scene *ScenePlay) CheckDraggingInput() {
-	if scene.Config.Markmode {
-		return
-	}
-
-	dragbutton := ebiten.MouseButtonLeft
-
-	if scene.Config.Drawmode {
-		dragbutton = ebiten.MouseButtonMiddle
-	}
-
-	// move canvas
-	if scene.Dragging && !ebiten.IsMouseButtonPressed(dragbutton) {
-		// release
-		scene.Dragging = false
-	}
-
-	if !scene.Dragging && ebiten.IsMouseButtonPressed(dragbutton) {
-		// start dragging
-		scene.Dragging = true
-		scene.LastCursorPos[0], scene.LastCursorPos[1] = scene.Camera.ScreenToWorld(ebiten.CursorPosition())
-	}
-
-	if scene.Dragging {
-		x, y := scene.Camera.ScreenToWorld(ebiten.CursorPosition())
-
-		if x != scene.LastCursorPos[0] || y != scene.LastCursorPos[1] {
-			// actually drag by mouse cursor pos diff to last cursor pos
-			scene.Camera.Position[0] -= float64(x - scene.LastCursorPos[0])
-			scene.Camera.Position[1] -= float64(y - scene.LastCursorPos[1])
-		}
-
-		scene.LastCursorPos[0], scene.LastCursorPos[1] = scene.Camera.ScreenToWorld(ebiten.CursorPosition())
-	}
-
-	// also support the arrow keys to move the canvas
-	switch {
-	case ebiten.IsKeyPressed(ebiten.KeyArrowLeft):
-		scene.Camera.Position[0] -= 1
-	case ebiten.IsKeyPressed(ebiten.KeyArrowRight):
-		scene.Camera.Position[0] += 1
-	case ebiten.IsKeyPressed(ebiten.KeyArrowUp):
-		scene.Camera.Position[1] -= 1
-	case ebiten.IsKeyPressed(ebiten.KeyArrowDown):
-		scene.Camera.Position[1] += 1
-	}
-
-	// Zoom
-	_, dy := ebiten.Wheel()
-
-	if dy != 0 {
-		scene.Camera.ZoomFactor += (int(dy) * 5)
-	}
-
-	if inpututil.IsKeyJustPressed(ebiten.KeyR) {
-		scene.Camera.Reset()
-	}
-
-}
-
-func (scene *ScenePlay) GetWorldCursorPos() image.Point {
-	worldX, worldY := scene.Camera.ScreenToWorld(ebiten.CursorPosition())
-	return image.Point{
-		X: int(worldX) / scene.Config.Cellsize,
-		Y: int(worldY) / scene.Config.Cellsize,
-	}
-}
-
-func (scene *ScenePlay) CheckMarkInput() {
-	if !scene.Config.Markmode {
-		return
-	}
-
-	if inpututil.IsKeyJustPressed(ebiten.KeyEscape) {
-		scene.Config.Markmode = false
-	}
-
-	if ebiten.IsMouseButtonPressed(ebiten.MouseButton0) {
-		if !scene.MarkTaken {
-			scene.Mark = scene.GetWorldCursorPos()
-			scene.MarkTaken = true
-			scene.MarkDone = false
-		}
-
-		scene.Point = scene.GetWorldCursorPos()
-		//fmt.Printf("Mark: %v, Point: %v\n", scene.Mark, scene.Point)
-	} else if inpututil.IsMouseButtonJustReleased(ebiten.MouseButton0) {
-		scene.Config.Markmode = false
-		scene.MarkTaken = false
-		scene.MarkDone = true
-
-		scene.SaveRectRLE()
-	}
-}
-
-func (scene *ScenePlay) SaveState() {
-	filename := GetFilename(scene.Generations)
-	err := scene.Grids[scene.Index].SaveState(filename, scene.Config.Rule.Definition)
-	if err != nil {
-		log.Printf("failed to save game state to %s: %s", filename, err)
-	}
-	log.Printf("saved game state to %s at generation %d\n", filename, scene.Generations)
-}
-
-func (scene *ScenePlay) SaveRectRLE() {
-	filename := GetFilenameRLE(scene.Generations)
-
-	if scene.Mark.X == scene.Point.X || scene.Mark.Y == scene.Point.Y {
-		log.Printf("can't save non-rectangle\n")
-		return
-	}
-
-	var width int
-	var height int
-	var startx int
-	var starty int
-
-	if scene.Mark.X < scene.Point.X {
-		// mark left point
-		startx = scene.Mark.X
-		width = scene.Point.X - scene.Mark.X
-	} else {
-		// mark right point
-		startx = scene.Point.X
-		width = scene.Mark.X - scene.Point.X
-	}
-
-	if scene.Mark.Y < scene.Point.Y {
-		// mark above point
-		starty = scene.Mark.Y
-		height = scene.Point.Y - scene.Mark.Y
-	} else {
-		// mark below point
-		starty = scene.Point.Y
-		height = scene.Mark.Y - scene.Point.Y
-	}
-
-	grid := make([][]bool, height)
-
-	for y := 0; y < height; y++ {
-		grid[y] = make([]bool, width)
-
-		for x := 0; x < width; x++ {
-			grid[y][x] = scene.Grids[scene.Index].Data[y+starty][x+startx]
-		}
-	}
-
-	err := rle.StoreGridToRLE(grid, filename, scene.Config.Rule.Definition, width, height)
-	if err != nil {
-		log.Printf("failed to save rect to %s: %s\n", filename, err)
-	} else {
-		log.Printf("saved selected rect to %s at generation %d\n", filename, scene.Generations)
-	}
-
-}
-
-func (scene *ScenePlay) Update() error {
-	if scene.Config.Restart {
-		scene.Config.Restart = false
-		scene.Generations = 0
-		scene.InitGrid()
-		scene.InitCache()
-		return nil
-	}
-
-	if scene.Config.RestartCache {
-		scene.Config.RestartCache = false
-		scene.Theme = scene.Config.ThemeManager.GetCurrentTheme()
-		scene.InitCache()
-		return nil
-	}
-
-	if quit := scene.CheckExit(); quit != nil {
-		return quit
-	}
-
-	scene.CheckInput()
-	scene.CheckDrawingInput()
-	scene.CheckDraggingInput()
-	scene.CheckMarkInput()
-
-	if !scene.Config.Paused || scene.RunOneStep {
-		scene.UpdateCells()
-	}
-
-	return nil
-}
-
-// set a cell to alive or dead
-func (scene *ScenePlay) ToggleCellOnCursorPos(alive bool) {
-	// use cursor pos relative to the world
-	worldX, worldY := scene.Camera.ScreenToWorld(ebiten.CursorPosition())
-	x := int(worldX) / scene.Config.Cellsize
-	y := int(worldY) / scene.Config.Cellsize
-
-	if x > -1 && y > -1 && x < scene.Config.Width && y < scene.Config.Height {
-		scene.Grids[scene.Index].Data[y][x] = alive
-		scene.History[y][x] = 1
-	}
-}
-
-// draw the new grid state
-func (scene *ScenePlay) Draw(screen *ebiten.Image) {
-	// we  fill the whole  screen with  a background color,  the cells
-	// themselfes will be 1px smaller as their nominal size, producing
-	// a nice grey grid with grid lines
-	op := &ebiten.DrawImageOptions{}
-
-	op.GeoM.Translate(0, 0)
-	scene.World.DrawImage(scene.Cache, op)
-
-	for y := 0; y < scene.Config.Height; y++ {
-		for x := 0; x < scene.Config.Width; x++ {
-			op.GeoM.Reset()
-			op.GeoM.Translate(
-				float64(x*scene.Config.Cellsize),
-				float64(y*scene.Config.Cellsize),
-			)
-
-			if scene.Config.ShowEvolution {
-				scene.DrawEvolution(screen, x, y, op)
-			} else {
-				if scene.Grids[scene.Index].Data[y][x] {
-					scene.World.DrawImage(scene.Theme.Tile(ColLife), op)
-				}
-			}
-		}
-	}
-
-	scene.DrawMark(scene.World)
-
-	scene.Camera.Render(scene.World, screen)
-
-	scene.DrawDebug(screen)
-}
-
-func (scene *ScenePlay) DrawEvolution(screen *ebiten.Image, x, y int, op *ebiten.DrawImageOptions) {
-	age := scene.Generations - scene.History[y][x]
-
-	switch scene.Grids[scene.Index].Data[y][x] {
-	case Alive:
-		if age > 50 && scene.Config.ShowEvolution {
-			scene.World.DrawImage(scene.Theme.Tile(ColOld), op)
-		} else {
-			scene.World.DrawImage(scene.Theme.Tile(ColLife), op)
-		}
-	case Dead:
-		// only draw dead cells in case evolution trace is enabled
-		if scene.History[y][x] > 1 && scene.Config.ShowEvolution {
-			switch {
-			case age < 10:
-				scene.World.DrawImage(scene.Theme.Tile(ColAge1), op)
-			case age < 20:
-				scene.World.DrawImage(scene.Theme.Tile(ColAge2), op)
-			case age < 30:
-				scene.World.DrawImage(scene.Theme.Tile(ColAge3), op)
-			default:
-				scene.World.DrawImage(scene.Theme.Tile(ColAge4), op)
-			}
-		}
-	}
-}
-
-func (scene *ScenePlay) DrawMark(screen *ebiten.Image) {
-	if scene.Config.Markmode && scene.MarkTaken {
-		x := float32(scene.Mark.X * scene.Config.Cellsize)
-		y := float32(scene.Mark.Y * scene.Config.Cellsize)
-		w := float32((scene.Point.X - scene.Mark.X) * scene.Config.Cellsize)
-		h := float32((scene.Point.Y - scene.Mark.Y) * scene.Config.Cellsize)
-
-		vector.StrokeRect(
-			scene.World,
-			x+1, y+1,
-			w, h,
-			1.0, scene.Theme.Color(ColOld), false,
-		)
-	}
-}
-
-func (scene *ScenePlay) DrawDebug(screen *ebiten.Image) {
-	if scene.Config.Debug {
-		paused := ""
-		if scene.Config.Paused {
-			paused = "-- paused --"
-		}
-
-		if scene.Config.Markmode {
-			paused = "-- mark --"
-		}
-
-		if scene.Config.Drawmode {
-			paused = "-- insert --"
-		}
-
-		x, y := ebiten.CursorPosition()
-		debug := fmt.Sprintf(
-			DEBUG_FORMAT,
-			ebiten.ActualTPS(), scene.TPG, GetMem(), scene.Generations,
-			scene.Game.Scale, scene.Camera.ZoomFactor,
-			scene.Camera.Position[0], scene.Camera.Position[1],
-			x, y,
-			paused)
-
-		FontRenderer.Renderer.SetSizePx(10 + int(scene.Game.Scale*10))
-		FontRenderer.Renderer.SetTarget(screen)
-
-		FontRenderer.Renderer.SetColor(scene.Theme.Color(ColLife))
-		FontRenderer.Renderer.Draw(debug, 31, 31)
-
-		FontRenderer.Renderer.SetColor(scene.Theme.Color(ColOld))
-		FontRenderer.Renderer.Draw(debug, 30, 30)
-
-		fmt.Println(debug)
-	}
-
-}
-
-// load a pre-computed pattern from RLE file
-func (scene *ScenePlay) InitPattern() {
-	scene.Grids[0].LoadRLE(scene.Config.RLE)
-}
-
-// pre-render offscreen cache image
-func (scene *ScenePlay) InitCache() {
-	op := &ebiten.DrawImageOptions{}
-
-	if scene.Config.ShowGrid {
-		scene.Cache.Fill(scene.Theme.Color(ColGrid))
-	} else {
-		scene.Cache.Fill(scene.Theme.Color(ColDead))
-	}
-
-	for y := 0; y < scene.Config.Height; y++ {
-		for x := 0; x < scene.Config.Width; x++ {
-			op.GeoM.Reset()
-			op.GeoM.Translate(
-				float64(x*scene.Config.Cellsize),
-				float64(y*scene.Config.Cellsize),
-			)
-
-			scene.Cache.DrawImage(scene.Theme.Tile(ColDead), op)
-		}
-	}
-}
-
-// initialize grid[s], either using pre-computed from state or rle file, or random
-func (scene *ScenePlay) InitGrid() {
-	grida := NewGrid(scene.Config.Width, scene.Config.Height, scene.Config.Density, scene.Config.Empty)
-	gridb := NewGrid(scene.Config.Width, scene.Config.Height, scene.Config.Density, scene.Config.Empty)
-
-	// startup is delayed until user has selected options
-	grida.FillRandom()
-
-	scene.Grids = []*Grid{
-		grida,
-		gridb,
-	}
-
-	scene.History = make([][]int64, scene.Config.Height)
-	for y := 0; y < scene.Config.Height; y++ {
-		scene.History[y] = make([]int64, scene.Config.Width)
-	}
-}
-
-func (scene *ScenePlay) Init() {
-	// setup the scene
-	scene.Camera = Camera{
-		ViewPort: f64.Vec2{
-			float64(scene.Config.ScreenWidth),
-			float64(scene.Config.ScreenHeight),
-		},
-		InitialZoomFactor: scene.Config.Zoomfactor,
-		InitialPosition: f64.Vec2{
-			scene.Config.InitialCamPos[0],
-			scene.Config.InitialCamPos[1],
-		},
-		ZoomOutFactor: scene.Config.ZoomOutFactor,
-	}
-
-	scene.World = ebiten.NewImage(
-		scene.Config.Width*scene.Config.Cellsize,
-		scene.Config.Height*scene.Config.Cellsize,
-	)
-
-	scene.Cache = ebiten.NewImage(
-		scene.Config.Width*scene.Config.Cellsize,
-		scene.Config.Height*scene.Config.Cellsize,
-	)
-
-	scene.Theme = scene.Config.ThemeManager.GetCurrentTheme()
-	scene.InitCache()
-
-	if scene.Config.DelayedStart && !scene.Config.Empty {
-		scene.Config.Empty = true
-		scene.InitGrid()
-		scene.Config.Empty = false
-	} else {
-		scene.InitGrid()
-	}
-
-	scene.InitPattern()
-
-	scene.Index = 0
-	scene.TicksElapsed = 0
-
-	scene.LastCursorPos = make([]float64, 2)
-
-	if scene.Config.Zoomfactor < 0 || scene.Config.Zoomfactor > 0 {
-		scene.Camera.ZoomFactor = scene.Config.Zoomfactor
-	}
-
-	scene.Camera.Setup()
-}
-
-func bool2int(b bool) int {
-	return int(*(*byte)(unsafe.Pointer(&b)))
-}
-
-// count the living neighbors of a cell
-func (scene *ScenePlay) CountNeighbors(x, y int) int {
-	var sum int
-
-	grid := scene.Grids[scene.Index].Data
-
-	for nbgX := -1; nbgX < 2; nbgX++ {
-		for nbgY := -1; nbgY < 2; nbgY++ {
-			var col, row int
-			if scene.Config.Wrap {
-				// In wrap mode we look at all the 8 neighbors surrounding us.
-				// In case we are on an edge we'll look at the neighbor on the
-				//  other side  of the  grid, thus  wrapping lookahead  around
-				// using the mod() function.
-				col = (x + nbgX + scene.Config.Width) % scene.Config.Width
-				row = (y + nbgY + scene.Config.Height) % scene.Config.Height
-
-			} else {
-				// In traditional grid mode the edges are deadly
-				if x+nbgX < 0 || x+nbgX >= scene.Config.Width || y+nbgY < 0 || y+nbgY >= scene.Config.Height {
-					continue
-				}
-				col = x + nbgX
-				row = y + nbgY
-			}
-
-			sum += bool2int(grid[row][col])
-		}
-	}
-
-	// don't count ourselfes though
-	sum -= bool2int(grid[y][x])
-
-	return sum
-}

src/rule.go

@@ -1,52 +0,0 @@
-package main
-
-import (
-	"log"
-	"strconv"
-	"strings"
-)
-
-// a GOL rule
-type Rule struct {
-	Definition string
-	Birth      []int
-	Death      []int
-}
-
-// parse one part of a GOL rule into rule slice
-func NumbersToList(numbers string) []int {
-	list := []int{}
-
-	items := strings.Split(numbers, "")
-	for _, item := range items {
-		num, err := strconv.Atoi(item)
-		if err != nil {
-			log.Fatalf("failed to parse game rule part <%s>: %s", numbers, err)
-		}
-
-		list = append(list, num)
-	}
-
-	return list
-}
-
-// parse GOL rule, used in CheckRule()
-func ParseGameRule(rule string) *Rule {
-	parts := strings.Split(rule, "/")
-
-	if len(parts) < 2 {
-		log.Fatalf("Invalid game rule <%s>", rule)
-	}
-
-	golrule := &Rule{Definition: rule}
-
-	for _, part := range parts {
-		if part[0] == 'B' {
-			golrule.Birth = NumbersToList(part[1:])
-		} else {
-			golrule.Death = NumbersToList(part[1:])
-		}
-	}
-
-	return golrule
-}

src/scene.go

@@ -1,28 +0,0 @@
-package main
-
-import "github.com/hajimehoshi/ebiten/v2"
-
-// Wrapper for  different screens  to be  shown, as  Welcome, Options,
-// About, Menu Level and of course the actual game
-// Scenes are responsible for screen clearing! That way a scene is able
-// to render its content onto the running level, e.g. the options scene
-// etc.
-
-type SceneName int
-
-type Scene interface {
-	SetNext(SceneName)
-	GetNext() SceneName
-	SetPrevious(SceneName)
-	ResetNext()
-	Update() error
-	Draw(screen *ebiten.Image)
-	IsPrimary() bool // if true, this scene will be always drawn
-}
-
-const (
-	Menu = iota // main top level menu
-	Play        // actual playing happens here
-	Options
-	Keybindings
-)

src/system.go

@@ -1,11 +0,0 @@
-package main
-
-import "runtime"
-
-// returns current memory usage in MB
-func GetMem() float64 {
-	var m runtime.MemStats
-	runtime.ReadMemStats(&m)
-
-	return float64(m.Alloc) / 1024 / 1024
-}

src/theme.go

@@ -1,175 +0,0 @@
-package main
-
-import (
-	"fmt"
-	"image/color"
-	"log"
-
-	"github.com/hajimehoshi/ebiten/v2"
-	"github.com/hajimehoshi/ebiten/v2/vector"
-)
-
-// Color definitions. ColLife could be black or white depending on theme
-const (
-	ColLife = iota
-	ColDead
-	ColOld
-	ColAge1
-	ColAge2
-	ColAge3
-	ColAge4
-	ColGrid
-)
-
-// A Theme defines  how the grid and the cells  are colored. We define
-// the  colors and  the  actual tile  images here,  so  that they  are
-// readily available from play.go
-type Theme struct {
-	Tiles  map[int]*ebiten.Image
-	Colors map[int]color.RGBA
-	Name   string
-}
-
-type ThemeDef struct {
-	life, dead, grid, old, age1, age2, age3, age4 string
-}
-
-var THEMES = map[string]ThemeDef{
-	"standard": {
-		life: "e15f0b",
-		dead: "5a5a5a",
-		old:  "ff1e1e",
-		grid: "808080",
-		age1: "735f52",
-		age2: "6c6059",
-		age3: "635d59",
-		age4: "7b5e4b",
-	},
-	"dark": {
-		life: "c8c8c8",
-		dead: "000000",
-		old:  "ff1e1e",
-		grid: "808080",
-		age1: "522600",
-		age2: "422300",
-		age3: "2b1b00",
-		age4: "191100",
-	},
-	"light": {
-		life: "000000",
-		dead: "c8c8c8",
-		old:  "ff1e1e",
-		grid: "808080",
-		age1: "ffc361",
-		age2: "ffd38c",
-		age3: "ffe3b5",
-		age4: "fff0e0",
-	},
-}
-
-// create a new theme
-func NewTheme(def ThemeDef, cellsize int, name string) Theme {
-	theme := Theme{
-		Name: name,
-		Colors: map[int]color.RGBA{
-			ColLife: HexColor2RGBA(def.life),
-			ColDead: HexColor2RGBA(def.dead),
-			ColGrid: HexColor2RGBA(def.grid),
-			ColAge1: HexColor2RGBA(def.age1),
-			ColAge2: HexColor2RGBA(def.age2),
-			ColAge3: HexColor2RGBA(def.age3),
-			ColAge4: HexColor2RGBA(def.age4),
-			ColOld:  HexColor2RGBA(def.old),
-		},
-	}
-
-	theme.Tiles = make(map[int]*ebiten.Image, 6)
-
-	for cid, col := range theme.Colors {
-		theme.Tiles[cid] = ebiten.NewImage(cellsize, cellsize)
-		FillCell(theme.Tiles[cid], cellsize, col)
-	}
-
-	return theme
-}
-
-// return  the tile  image  for  the requested  color  type. panic  if
-// unknown type is being used, which is ok, since the code is the only
-// user anyway
-func (theme *Theme) Tile(col int) *ebiten.Image {
-	return theme.Tiles[col]
-}
-
-func (theme *Theme) Color(col int) color.RGBA {
-	return theme.Colors[col]
-}
-
-type ThemeManager struct {
-	Theme  string
-	Themes map[string]Theme
-}
-
-// Manager is used to easily switch themes from cli or menu
-func NewThemeManager(initial string, cellsize int) ThemeManager {
-	manager := ThemeManager{
-		Theme: initial,
-	}
-
-	manager.Themes = make(map[string]Theme, len(THEMES))
-
-	for name, def := range THEMES {
-		manager.Themes[name] = NewTheme(def, cellsize, name)
-	}
-
-	return manager
-}
-
-func (manager *ThemeManager) GetCurrentTheme() Theme {
-	return manager.Themes[manager.Theme]
-}
-
-func (manager *ThemeManager) GetCurrentThemeName() string {
-	return manager.Theme
-}
-
-func (manager *ThemeManager) SetCurrentTheme(theme string) {
-	if Exists(manager.Themes, theme) {
-		manager.Theme = theme
-	}
-}
-
-// Fill a cell with the given color.
-//
-// We do not  draw the cell at  0,0 of it's position but  at 1,1. This
-// creates a top and lef  transparent. By using a different background
-// for the whole grid we can then  decide wether to show grid lines or
-// not.
-//
-// If no  gridlines are  selected the background  will just  be filled
-// with the DEAD  color. However, IF we are to  show the gridlines, we
-// fill it  with a lighter color.  The transparent edges of  all tiles
-// then create the grid.
-//
-// So we don't draw a grid, we just left a grid behind, which saves us
-// from a lot of drawing operations.
-func FillCell(tile *ebiten.Image, cellsize int, col color.RGBA) {
-	vector.DrawFilledRect(
-		tile,
-		float32(1),
-		float32(1),
-		float32(cellsize),
-		float32(cellsize),
-		col, false,
-	)
-}
-
-func HexColor2RGBA(hex string) color.RGBA {
-	var r, g, b uint8
-
-	_, err := fmt.Sscanf(hex, "%02x%02x%02x", &r, &g, &b)
-	if err != nil {
-		log.Fatalf("failed to parse hex color: %s", err)
-	}
-
-	return color.RGBA{r, g, b, 255}
-}

src/widgets.go

@@ -1,305 +0,0 @@
-package main
-
-import (
-	"image/color"
-
-	"github.com/ebitenui/ebitenui/image"
-	"github.com/ebitenui/ebitenui/widget"
-)
-
-func NewMenuButton(
-	text string,
-	action func(args *widget.ButtonClickedEventArgs)) *widget.Button {
-
-	buttonImage, _ := LoadButtonImage()
-
-	return widget.NewButton(
-		widget.ButtonOpts.WidgetOpts(
-			widget.WidgetOpts.LayoutData(widget.RowLayoutData{
-				Position:  widget.RowLayoutPositionCenter,
-				Stretch:   true,
-				MaxWidth:  200,
-				MaxHeight: 100,
-			}),
-		),
-
-		widget.ButtonOpts.Image(buttonImage),
-
-		widget.ButtonOpts.Text(text, *FontRenderer.FontSmall, &widget.ButtonTextColor{
-			Idle: color.NRGBA{0xdf, 0xf4, 0xff, 0xff},
-		}),
-
-		widget.ButtonOpts.TextPadding(widget.Insets{
-			Left:   5,
-			Right:  5,
-			Top:    5,
-			Bottom: 5,
-		}),
-
-		widget.ButtonOpts.ClickedHandler(action),
-	)
-}
-
-func NewCheckbox(
-	text string,
-	initialvalue bool,
-	action func(args *widget.CheckboxChangedEventArgs)) *widget.LabeledCheckbox {
-
-	checkboxImage, _ := LoadCheckboxImage()
-	buttonImage, _ := LoadButtonImage()
-
-	var state widget.WidgetState
-	if initialvalue {
-		state = widget.WidgetChecked
-	}
-
-	return widget.NewLabeledCheckbox(
-		widget.LabeledCheckboxOpts.CheckboxOpts(
-			widget.CheckboxOpts.ButtonOpts(
-				widget.ButtonOpts.Image(buttonImage),
-			),
-			widget.CheckboxOpts.Image(checkboxImage),
-			widget.CheckboxOpts.StateChangedHandler(action),
-			widget.CheckboxOpts.InitialState(state),
-		),
-		widget.LabeledCheckboxOpts.LabelOpts(
-			widget.LabelOpts.Text(text, *FontRenderer.FontSmall,
-				&widget.LabelColor{
-					Idle: color.NRGBA{0xdf, 0xf4, 0xff, 0xff},
-				}),
-		),
-	)
-}
-
-func NewSeparator(padding int) widget.PreferredSizeLocateableWidget {
-	c := widget.NewContainer(
-		widget.ContainerOpts.Layout(widget.NewRowLayout(
-			widget.RowLayoutOpts.Direction(widget.DirectionVertical),
-			widget.RowLayoutOpts.Padding(widget.Insets{
-				Top:    padding,
-				Bottom: 0,
-			}))),
-		widget.ContainerOpts.WidgetOpts(
-			widget.WidgetOpts.LayoutData(
-				widget.RowLayoutData{Stretch: true})))
-	return c
-}
-
-type ListEntry struct {
-	id   int
-	Name string
-}
-
-func NewCombobox(items []string, selected string,
-	action func(args *widget.ListComboButtonEntrySelectedEventArgs)) *widget.ListComboButton {
-	buttonImage, _ := LoadButtonImage()
-
-	entries := make([]any, 0, len(items))
-	idxselected := 0
-	for i, item := range items {
-		entries = append(entries, ListEntry{i, item})
-		if items[i] == selected {
-			idxselected = i
-		}
-	}
-
-	comboBox := widget.NewListComboButton(
-		widget.ListComboButtonOpts.SelectComboButtonOpts(
-			widget.SelectComboButtonOpts.ComboButtonOpts(
-				//Set the max height of the dropdown list
-				widget.ComboButtonOpts.MaxContentHeight(150),
-				//Set the parameters for the primary displayed button
-				widget.ComboButtonOpts.ButtonOpts(
-					widget.ButtonOpts.Image(buttonImage),
-					widget.ButtonOpts.TextPadding(widget.NewInsetsSimple(5)),
-					widget.ButtonOpts.Text("", *FontRenderer.FontSmall, &widget.ButtonTextColor{
-						Idle:     color.White,
-						Disabled: color.White,
-					}),
-					widget.ButtonOpts.WidgetOpts(
-						//Set how wide the button should be
-						widget.WidgetOpts.MinSize(50, 0),
-						//Set the combobox's position
-						widget.WidgetOpts.LayoutData(widget.AnchorLayoutData{
-							HorizontalPosition: widget.AnchorLayoutPositionCenter,
-							VerticalPosition:   widget.AnchorLayoutPositionCenter,
-						})),
-				),
-			),
-		),
-		widget.ListComboButtonOpts.ListOpts(
-			//Set how wide the dropdown list should be
-			widget.ListOpts.ContainerOpts(
-				widget.ContainerOpts.WidgetOpts(widget.WidgetOpts.MinSize(50, 0)),
-			),
-			//Set the entries in the list
-			widget.ListOpts.Entries(entries),
-			widget.ListOpts.ScrollContainerOpts(
-				//Set the background images/color for the dropdown list
-				widget.ScrollContainerOpts.Image(&widget.ScrollContainerImage{
-					Idle:     image.NewNineSliceColor(color.NRGBA{100, 100, 100, 255}),
-					Disabled: image.NewNineSliceColor(color.NRGBA{100, 100, 100, 255}),
-					Mask:     image.NewNineSliceColor(color.NRGBA{100, 100, 100, 255}),
-				}),
-			),
-			widget.ListOpts.SliderOpts(
-				//Set the background images/color for the background of the slider track
-				widget.SliderOpts.Images(&widget.SliderTrackImage{
-					Idle:  image.NewNineSliceColor(color.NRGBA{100, 100, 100, 255}),
-					Hover: image.NewNineSliceColor(color.NRGBA{100, 100, 100, 255}),
-				}, buttonImage),
-				widget.SliderOpts.MinHandleSize(5),
-				//Set how wide the track should be
-				widget.SliderOpts.TrackPadding(widget.NewInsetsSimple(2))),
-			//Set the font for the list options
-			widget.ListOpts.EntryFontFace(*FontRenderer.FontSmall),
-			//Set the colors for the list
-			widget.ListOpts.EntryColor(&widget.ListEntryColor{
-				Selected:                   color.NRGBA{254, 255, 255, 255},
-				Unselected:                 color.NRGBA{254, 255, 255, 255},
-				SelectedBackground:         HexColor2RGBA(THEMES["standard"].life),
-				SelectedFocusedBackground:  HexColor2RGBA(THEMES["standard"].old),
-				FocusedBackground:          HexColor2RGBA(THEMES["standard"].old),
-				DisabledUnselected:         HexColor2RGBA(THEMES["standard"].grid),
-				DisabledSelected:           HexColor2RGBA(THEMES["standard"].grid),
-				DisabledSelectedBackground: HexColor2RGBA(THEMES["standard"].grid),
-			}),
-			//Padding for each entry
-			widget.ListOpts.EntryTextPadding(widget.NewInsetsSimple(5)),
-		),
-		//Define how the entry is displayed
-		widget.ListComboButtonOpts.EntryLabelFunc(
-			func(e any) string {
-				//Button Label function, visible if not open
-				return e.(ListEntry).Name
-			},
-			func(e any) string {
-				//List Label function, visible items if open
-				return e.(ListEntry).Name
-			}),
-		//Callback when a new entry is selected
-		widget.ListComboButtonOpts.EntrySelectedHandler(action),
-	)
-
-	//Select the middle entry -- optional
-	comboBox.SetSelectedEntry(entries[idxselected])
-
-	return comboBox
-}
-
-func NewLabel(text string) *widget.Text {
-	return widget.NewText(
-		widget.TextOpts.Text(text, *FontRenderer.FontSmall, color.White),
-		widget.TextOpts.Position(widget.TextPositionCenter, widget.TextPositionCenter),
-		widget.TextOpts.WidgetOpts(
-			widget.WidgetOpts.LayoutData(widget.RowLayoutData{
-				Position: widget.RowLayoutPositionCenter,
-			}),
-		),
-	)
-
-}
-
-/////////////// containers
-
-type RowContainer struct {
-	Root *widget.Container
-	Row  *widget.Container
-}
-
-func (container *RowContainer) AddChild(child widget.PreferredSizeLocateableWidget) {
-	container.Row.AddChild(child)
-}
-
-func (container *RowContainer) Container() *widget.Container {
-	return container.Root
-}
-
-// set arg to false if no background needed
-func NewRowContainer(title string) *RowContainer {
-	buttonImageHover := image.NewNineSlice(Assets["button-9slice3"], [3]int{3, 3, 3}, [3]int{3, 3, 3})
-
-	uiContainer := widget.NewContainer(
-		widget.ContainerOpts.Layout(widget.NewAnchorLayout()),
-	)
-
-	titleLabel := widget.NewText(
-		widget.TextOpts.WidgetOpts(widget.WidgetOpts.LayoutData(widget.RowLayoutData{
-			Stretch: true,
-		})),
-		widget.TextOpts.Text(title, *FontRenderer.FontNormal, color.NRGBA{0xdf, 0xf4, 0xff, 0xff}))
-
-	rowContainer := widget.NewContainer(
-		widget.ContainerOpts.WidgetOpts(
-			widget.WidgetOpts.LayoutData(widget.AnchorLayoutData{
-				HorizontalPosition: widget.AnchorLayoutPositionCenter,
-				VerticalPosition:   widget.AnchorLayoutPositionCenter,
-			}),
-		),
-		widget.ContainerOpts.Layout(widget.NewRowLayout(
-			widget.RowLayoutOpts.Direction(widget.DirectionVertical),
-			widget.RowLayoutOpts.Padding(widget.NewInsetsSimple(8)),
-			widget.RowLayoutOpts.Spacing(0),
-		)),
-		widget.ContainerOpts.BackgroundImage(buttonImageHover),
-	)
-
-	rowContainer.AddChild(titleLabel)
-
-	uiContainer.AddChild(rowContainer)
-
-	return &RowContainer{
-		Root: uiContainer,
-		Row:  rowContainer,
-	}
-}
-
-func NewColumnContainer() *widget.Container {
-	colcontainer := widget.NewContainer(
-		widget.ContainerOpts.Layout(
-			widget.NewGridLayout(
-				widget.GridLayoutOpts.Columns(2),
-				widget.GridLayoutOpts.Spacing(5, 0),
-			),
-		),
-	)
-
-	return colcontainer
-}
-
-func LoadButtonImage() (*widget.ButtonImage, error) {
-	idle := image.NewNineSlice(Assets["button-9slice2"], [3]int{3, 3, 3}, [3]int{3, 3, 3})
-	hover := image.NewNineSlice(Assets["button-9slice3"], [3]int{3, 3, 3}, [3]int{3, 3, 3})
-	pressed := image.NewNineSlice(Assets["button-9slice1"], [3]int{3, 3, 3}, [3]int{3, 3, 3})
-
-	return &widget.ButtonImage{
-		Idle:    idle,
-		Hover:   hover,
-		Pressed: pressed,
-	}, nil
-}
-
-func LoadComboLabelImage() *widget.ButtonImageImage {
-	return &widget.ButtonImageImage{
-		Idle:     Assets["checkbox-9slice2"],
-		Disabled: Assets["checkbox-9slice2"],
-	}
-}
-
-func LoadCheckboxImage() (*widget.CheckboxGraphicImage, error) {
-	unchecked := &widget.ButtonImageImage{
-		Idle:     Assets["checkbox-9slice2"],
-		Disabled: Assets["checkbox-9slice2"],
-	}
-
-	checked := &widget.ButtonImageImage{
-		Idle:     Assets["checkbox-9slice1"],
-		Disabled: Assets["checkbox-9slice1"],
-	}
-
-	return &widget.CheckboxGraphicImage{
-		Checked:   checked,
-		Unchecked: unchecked,
-		Greyed:    unchecked,
-	}, nil
-}

various-tests/README.md

@@ -1,12 +0,0 @@
-## Various performance tests
-
-Running with 1500x1500 grid 5k times
-
-| Variation                    | Description                                                                 | Duration          |
-|------------------------------|-----------------------------------------------------------------------------|-------------------|
-| perf-2dim                    | uses 2d grid of bools, no tuning                                            | 00:03:14          |
-| perf-2dim-pointers           | use 2d grid of `Cell{Neighbors,NeighborCount}`s using pointers to neighbors | 00:03:35/00:04:75 |
-| perf-2dim-pointers-array     | same as above but array of neighbors instead of slice                       | 00:02:40          |
-| perf-2dim-pointers-all-array | use arrays for everything, static 1500x1500                                 | infinite, aborted |
-| perf-1dim                    | use 1d grid of bools, access using y*x, no further tuning                   | 00:03:24          |
-| perf-ecs                     | use arche ecs, unusable                                                     | 00:14:51          |

various-tests/drawtriangles/go.mod

@@ -1,13 +0,0 @@
-module drawminimal
-
-go 1.22
-
-require (
-	github.com/ebitengine/gomobile v0.0.0-20240518074828-e86332849895 // indirect
-	github.com/ebitengine/hideconsole v1.0.0 // indirect
-	github.com/ebitengine/purego v0.7.0 // indirect
-	github.com/hajimehoshi/ebiten/v2 v2.7.4 // indirect
-	github.com/jezek/xgb v1.1.1 // indirect
-	golang.org/x/sync v0.7.0 // indirect
-	golang.org/x/sys v0.20.0 // indirect
-)

various-tests/drawtriangles/go.sum

@@ -1,14 +0,0 @@
-github.com/ebitengine/gomobile v0.0.0-20240518074828-e86332849895 h1:48bCqKTuD7Z0UovDfvpCn7wZ0GUZ+yosIteNDthn3FU=
-github.com/ebitengine/gomobile v0.0.0-20240518074828-e86332849895/go.mod h1:XZdLv05c5hOZm3fM2NlJ92FyEZjnslcMcNRrhxs8+8M=
-github.com/ebitengine/hideconsole v1.0.0 h1:5J4U0kXF+pv/DhiXt5/lTz0eO5ogJ1iXb8Yj1yReDqE=
-github.com/ebitengine/hideconsole v1.0.0/go.mod h1:hTTBTvVYWKBuxPr7peweneWdkUwEuHuB3C1R/ielR1A=
-github.com/ebitengine/purego v0.7.0 h1:HPZpl61edMGCEW6XK2nsR6+7AnJ3unUxpTZBkkIXnMc=
-github.com/ebitengine/purego v0.7.0/go.mod h1:ah1In8AOtksoNK6yk5z1HTJeUkC1Ez4Wk2idgGslMwQ=
-github.com/hajimehoshi/ebiten/v2 v2.7.4 h1:X+heODRQ3Ie9F9QFjm24gEZqQd5FSfR9XuT2XfHwgf8=
-github.com/hajimehoshi/ebiten/v2 v2.7.4/go.mod h1:H2pHVgq29rfm5yeQ7jzWOM3VHsjo7/AyucODNLOhsVY=
-github.com/jezek/xgb v1.1.1 h1:bE/r8ZZtSv7l9gk6nU0mYx51aXrvnyb44892TwSaqS4=
-github.com/jezek/xgb v1.1.1/go.mod h1:nrhwO0FX/enq75I7Y7G8iN1ubpSGZEiA3v9e9GyRFlk=
-golang.org/x/sync v0.7.0 h1:YsImfSBoP9QPYL0xyKJPq0gcaJdG3rInoqxTWbfQu9M=
-golang.org/x/sync v0.7.0/go.mod h1:Czt+wKu1gCyEFDUtn0jG5QVvpJ6rzVqr5aXyt9drQfk=
-golang.org/x/sys v0.20.0 h1:Od9JTbYCk261bKm4M/mw7AklTlFYIa0bIp9BgSm1S8Y=
-golang.org/x/sys v0.20.0/go.mod h1:/VUhepiaJMQUp4+oa/7Zr1D23ma6VTLIYjOOTFZPUcA=

various-tests/drawtriangles/main.go

@@ -1,362 +0,0 @@
-package main
-
-import (
-	"fmt"
-	"image"
-	"image/color"
-	"log"
-	"math/rand"
-	"os"
-	"runtime/pprof"
-
-	"github.com/hajimehoshi/ebiten/v2"
-	"github.com/hajimehoshi/ebiten/v2/inpututil"
-	"github.com/hajimehoshi/ebiten/v2/vector"
-)
-
-var (
-	blackImage    = ebiten.NewImage(3, 3)
-	blackSubImage = blackImage.SubImage(image.Rect(1, 1, 2, 2)).(*ebiten.Image)
-)
-
-type Images struct {
-	Black, White *ebiten.Image
-}
-
-type Grid struct {
-	Data                   [][]int64
-	Width, Height, Density int
-}
-
-// Create new empty grid and allocate Data according to provided dimensions
-func NewGrid(width, height, density int) *Grid {
-	grid := &Grid{
-		Height:  height,
-		Width:   width,
-		Density: density,
-		Data:    make([][]int64, height),
-	}
-
-	for y := 0; y < height; y++ {
-		grid.Data[y] = make([]int64, width)
-	}
-
-	return grid
-}
-
-// live console output of the grid
-func (grid *Grid) Dump() {
-	/*
-		cmd := exec.Command("clear")
-		cmd.Stdout = os.Stdout
-		cmd.Run()
-
-		for y := 0; y < grid.Height; y++ {
-			for x := 0; x < grid.Width; x++ {
-				if grid.Data[y][x] == 1 {
-					fmt.Print("XX")
-				} else {
-					fmt.Print("  ")
-				}
-			}
-			fmt.Println()
-		}
-	*/
-	fmt.Printf("FPS: %0.2f\n", ebiten.ActualTPS())
-}
-
-type Game struct {
-	Width, Height, Cellsize, Density int
-	ScreenWidth, ScreenHeight        int
-	Grids                            []*Grid
-	Index                            int
-	Black, White, Grey               color.RGBA
-	Tiles                            Images
-	Cache                            *ebiten.Image
-	Elapsed                          int64
-	TPG                              int64 // adjust game speed independently of TPS
-	Vertices                         []ebiten.Vertex
-	Indices                          []uint16
-	Pause, Debug                     bool
-}
-
-// fill a cell
-func FillCell(tile *ebiten.Image, cellsize int, col color.RGBA) {
-	vector.DrawFilledRect(
-		tile,
-		float32(1),
-		float32(1),
-		float32(cellsize-1),
-		float32(cellsize-1),
-		col, false,
-	)
-}
-
-func (game *Game) Layout(outsideWidth, outsideHeight int) (int, int) {
-	return game.ScreenWidth, game.ScreenHeight
-}
-
-func (game *Game) Init() {
-	// setup two grids, one for display, one for next state
-	grida := NewGrid(game.Width, game.Height, game.Density)
-	gridb := NewGrid(game.Width, game.Height, game.Density)
-
-	for y := 0; y < game.Height; y++ {
-		for x := 0; x < game.Width; x++ {
-			if rand.Intn(game.Density) == 1 {
-				grida.Data[y][x] = 1
-			}
-		}
-
-	}
-
-	game.Grids = []*Grid{
-		grida,
-		gridb,
-	}
-
-	// setup colors
-	game.Grey = color.RGBA{128, 128, 128, 0xff}
-	game.Black = color.RGBA{0, 0, 0, 0xff}
-	game.White = color.RGBA{200, 200, 200, 0xff}
-
-	game.Tiles.White = ebiten.NewImage(game.Cellsize, game.Cellsize)
-	game.Cache = ebiten.NewImage(game.ScreenWidth, game.ScreenHeight)
-
-	FillCell(game.Tiles.White, game.Cellsize, game.White)
-	game.Cache.Fill(game.Grey)
-
-	// draw the offscreen image
-	op := &ebiten.DrawImageOptions{}
-	for y := 0; y < game.Height; y++ {
-		for x := 0; x < game.Width; x++ {
-			op.GeoM.Reset()
-			op.GeoM.Translate(float64(x*game.Cellsize), float64(y*game.Cellsize))
-			game.Cache.DrawImage(game.Tiles.White, op)
-		}
-	}
-
-	blackSubImage.Fill(game.Black)
-
-	lenvertices := game.ScreenHeight * game.ScreenWidth
-	game.Vertices = make([]ebiten.Vertex, lenvertices)
-	game.Indices = make([]uint16, lenvertices+(lenvertices/2))
-}
-
-// count the living neighbors of a cell
-func (game *Game) CountNeighbors(x, y int) int64 {
-	var sum int64
-
-	for nbgX := -1; nbgX < 2; nbgX++ {
-		for nbgY := -1; nbgY < 2; nbgY++ {
-			var col, row int
-
-			// Wrap  mode we look  at all the 8  neighbors surrounding
-			//  us.  In  case we  are  on an  edge we'll  look at  the
-			// neighbor on  the other side of the  grid, thus wrapping
-			// lookahead around using the mod() function.
-			col = (x + nbgX + game.Width) % game.Width
-			row = (y + nbgY + game.Height) % game.Height
-
-			sum += game.Grids[game.Index].Data[row][col]
-		}
-	}
-
-	// don't count ourselfes though
-	sum -= game.Grids[game.Index].Data[y][x]
-
-	return sum
-}
-
-// the heart of the game
-func (game *Game) CheckRule(state int64, neighbors int64) int64 {
-	var nextstate int64
-
-	if state == 0 && neighbors == 3 {
-		nextstate = 1
-	} else if state == 1 && (neighbors == 2 || neighbors == 3) {
-		nextstate = 1
-	} else {
-		nextstate = 0
-	}
-
-	return nextstate
-}
-
-// we only  update the cells if  we are not  in pause state or  if the
-// game timer (TPG) is elapsed.
-func (game *Game) UpdateCells() {
-	if game.Pause {
-		return
-	}
-
-	if game.Elapsed < game.TPG {
-		game.Elapsed++
-		return
-	}
-
-	// next grid index. we only have to, so we just xor it
-	next := game.Index ^ 1
-
-	// reset vertices
-	// FIXME: fails!
-	game.ClearVertices()
-
-	// calculate cell life state, this is the actual game of life
-	for y := 0; y < game.Height; y++ {
-		for x := 0; x < game.Width; x++ {
-			state := game.Grids[game.Index].Data[y][x] // 0|1 == dead or alive
-			neighbors := game.CountNeighbors(x, y)     // alive neighbor count
-
-			// actually apply the current rules
-			nextstate := game.CheckRule(state, neighbors)
-
-			// change state of current cell in next grid
-			game.Grids[next].Data[y][x] = nextstate
-		}
-	}
-
-	// calculate triangles for rendering
-	game.UpdateTriangles()
-
-	// switch grid for rendering
-	game.Index ^= 1
-
-	game.Elapsed = 0
-
-	if game.Debug {
-		game.Grids[next].Dump()
-	}
-}
-
-func (game *Game) Update() error {
-	game.UpdateCells()
-
-	if inpututil.IsKeyJustPressed(ebiten.KeySpace) {
-		game.Pause = !game.Pause
-	}
-
-	return nil
-}
-
-func (game *Game) ClearVertices() {
-	// FIXME: fails
-	for i := 0; i < len(game.Vertices); i++ {
-		game.Vertices[i] = ebiten.Vertex{}
-		// game.Vertices[i].DstX = 0
-		// game.Vertices[i].DstY = 1
-	}
-
-	game.Indices = game.Indices[:len(game.Indices)]
-}
-
-// create the triangles needed for rendering. Actual rendering doesn't
-// happen here but in Draw()
-func (game *Game) UpdateTriangles() {
-	var base uint16 = 0
-	var index uint16 = 0
-
-	idx := 0
-
-	// iterate over every cell
-	for celly := 0; celly < game.Height; celly++ {
-		for cellx := 0; cellx < game.Width; cellx++ {
-
-			// if the cell is alife
-			if game.Grids[game.Index].Data[celly][cellx] == 1 {
-
-				/* iterate over the cell's corners:
-				0   1
-
-				2   3
-				*/
-				for i := 0; i < 2; i++ {
-					for j := 0; j < 2; j++ {
-
-						// calculate the corner position
-						x := (cellx * game.Cellsize) + (i * game.Cellsize) + 1
-						y := (celly * game.Cellsize) + (j * game.Cellsize) + 1
-
-						if i == 1 {
-							x -= 1
-						}
-						if j == 1 {
-							y -= 1
-						}
-
-						// setup the vertex
-						game.Vertices[idx].DstX = float32(x)
-						game.Vertices[idx].DstY = float32(y)
-						game.Vertices[idx].SrcX = 1
-						game.Vertices[idx].SrcY = 1
-						game.Vertices[idx].ColorR = float32(game.Black.R)
-						game.Vertices[idx].ColorG = float32(game.Black.G)
-						game.Vertices[idx].ColorB = float32(game.Black.B)
-						game.Vertices[idx].ColorA = 1
-
-						idx++
-					}
-				}
-			}
-
-			// indices for first triangle
-			game.Indices[index] = base
-			game.Indices[index+1] = base + 1
-			game.Indices[index+2] = base + 3
-
-			// for the second one
-			game.Indices[index+3] = base
-			game.Indices[index+4] = base + 2
-			game.Indices[index+5] = base + 3
-
-			index += 6 // 3 indicies per triangle
-
-			base += 4 // 4 vertices per cell
-		}
-	}
-}
-
-func (game *Game) Draw(screen *ebiten.Image) {
-	op := &ebiten.DrawImageOptions{}
-
-	op.GeoM.Translate(0, 0)
-	screen.DrawImage(game.Cache, op)
-
-	triop := &ebiten.DrawTrianglesOptions{}
-	screen.DrawTriangles(game.Vertices, game.Indices, blackSubImage, triop)
-}
-
-func main() {
-	size := 200
-
-	game := &Game{
-		Width:    size,
-		Height:   size,
-		Cellsize: 4,
-		Density:  5,
-		TPG:      5,
-		Debug:    true,
-	}
-
-	game.ScreenWidth = game.Width * game.Cellsize
-	game.ScreenHeight = game.Height * game.Cellsize
-
-	game.Init()
-
-	ebiten.SetWindowSize(game.ScreenWidth, game.ScreenHeight)
-	ebiten.SetWindowTitle("triangle conway's game of life")
-	ebiten.SetWindowResizingMode(ebiten.WindowResizingModeEnabled)
-
-	fd, err := os.Create("cpu.profile")
-	if err != nil {
-		log.Fatal(err)
-	}
-	defer fd.Close()
-
-	pprof.StartCPUProfile(fd)
-	defer pprof.StopCPUProfile()
-
-	if err := ebiten.RunGame(game); err != nil {
-		log.Fatal(err)
-	}
-}

various-tests/perf-1dim/go.mod

@@ -1,3 +0,0 @@
-module perf
-
-go 1.22

various-tests/perf-1dim/main.go

@@ -1,106 +0,0 @@
-package main
-
-import (
-	"fmt"
-	"log"
-	"math/rand"
-	"os"
-	"runtime/pprof"
-	"unsafe"
-)
-
-const (
-	dim     int  = 1500
-	loops   int  = 5000
-	density int  = 8
-	debug   bool = false
-)
-
-var max int
-
-// https://dev.to/chigbeef_77/bool-int-but-stupid-in-go-3jb3
-func bool2int(b bool) int {
-	return int(*(*byte)(unsafe.Pointer(&b)))
-}
-
-func Count(grid []bool, x, y int) int {
-	var sum int
-
-	for nbgX := -1; nbgX < 2; nbgX++ {
-		for nbgY := -1; nbgY < 2; nbgY++ {
-			var col, row int
-
-			if x+nbgX < 0 || x+nbgX >= dim || y+nbgY < 0 || y+nbgY >= dim {
-				continue
-			}
-
-			col = x + nbgX
-			row = y + nbgY
-
-			state := grid[row*col]
-			intstate := bool2int(state)
-			sum += intstate
-		}
-	}
-
-	sum -= bool2int(grid[y*x])
-
-	return sum
-}
-
-func Init() []bool {
-	max = dim * dim
-
-	grid := make([]bool, max)
-
-	for y := 0; y < dim; y++ {
-		for x := 0; x < dim; x++ {
-			if rand.Intn(density) == 1 {
-				grid[y*x] = true
-			}
-		}
-	}
-
-	return grid
-}
-
-func Loop(grid []bool) {
-	c := 0
-	for i := 0; i < loops; i++ {
-		for y := 0; y < dim; y++ {
-			for x := 0; x < dim; x++ {
-				state := grid[y*x]
-				neighbors := Count(grid, x, y)
-				if state && neighbors > 1 {
-					if debug {
-						fmt.Printf("Loop %d - cell at %d,%d is %t and has %d living neighbors\n", i, x, y, state, neighbors)
-					}
-					c = 1
-				}
-			}
-		}
-	}
-
-	if c > 1 {
-		c = 0
-	}
-}
-
-func main() {
-	// enable  cpu profiling. Do  NOT use q  to stop the  game but
-	// close the window to get a profile
-	fd, err := os.Create("cpu.profile")
-	if err != nil {
-		log.Fatal(err)
-	}
-	defer fd.Close()
-
-	pprof.StartCPUProfile(fd)
-	defer pprof.StopCPUProfile()
-
-	// init
-	grid := Init()
-
-	// main loop
-	Loop(grid)
-}

various-tests/perf-2dim-pointers-all-array/go.mod

@@ -1,3 +0,0 @@
-module perf
-
-go 1.22

various-tests/perf-2dim-pointers-all-array/main.go

@@ -1,141 +0,0 @@
-package main
-
-import (
-	"fmt"
-	"log"
-	"math/rand"
-	"os"
-	"runtime/pprof"
-	"time"
-	"unsafe"
-)
-
-const (
-	max     int  = 1500
-	loops   int  = 5000
-	density int  = 8
-	debug   bool = false
-)
-
-type Cell struct {
-	State         bool
-	Neighbors     [8]*Cell
-	NeighborCount int
-}
-
-type Grid [1500][1500]Cell
-
-// https://dev.to/chigbeef_77/bool-int-but-stupid-in-go-3jb3
-func bool2int(b bool) int {
-	return int(*(*byte)(unsafe.Pointer(&b)))
-}
-
-func (cell *Cell) Count(x, y int) {
-	cell.NeighborCount = 0
-
-	for _, neighbor := range cell.Neighbors {
-		cell.NeighborCount += bool2int(neighbor.State)
-	}
-}
-
-func SetNeighbors(grid Grid, x, y int) {
-	cells := []*Cell{}
-	deadcell := &Cell{}
-
-	for nbgX := -1; nbgX < 2; nbgX++ {
-		for nbgY := -1; nbgY < 2; nbgY++ {
-			var col, row int
-
-			if x+nbgX < 0 || x+nbgX >= max || y+nbgY < 0 || y+nbgY >= max {
-				cells = append(cells, deadcell)
-			} else {
-
-				col = x + nbgX
-				row = y + nbgY
-
-				if col == x && row == y {
-					// do not add self
-					continue
-				}
-
-				cells = append(cells, &grid[row][col])
-			}
-		}
-	}
-
-	for idx, cell := range cells {
-		grid[y][x].Neighbors[idx] = cell
-	}
-}
-
-func Init() Grid {
-	grid := Grid{}
-
-	for y := 0; y < max; y++ {
-		for x := 0; x < max; x++ {
-			if rand.Intn(density) == 1 {
-				grid[y][x].State = true
-			}
-		}
-	}
-
-	for y := 0; y < max; y++ {
-		for x := 0; x < max; x++ {
-			SetNeighbors(grid, x, y)
-		}
-	}
-
-	return grid
-}
-
-func Loop(grid Grid) {
-	c := 0
-	for i := 0; i < loops; i++ {
-		for y := 0; y < max; y++ {
-			for x := 0; x < max; x++ {
-				cell := &grid[y][x]
-				state := cell.State
-
-				cell.Count(x, y)
-
-				if state && cell.NeighborCount > 1 {
-					if debug {
-						fmt.Printf(
-							"Loop %d - cell at %d,%d is %t and has %d living neighbors\n",
-							i, x, y, state, cell.NeighborCount)
-					}
-					c = 1
-				}
-			}
-		}
-	}
-
-	if c > 1 {
-		c = 0
-	}
-}
-
-func main() {
-	// enable  cpu profiling. Do  NOT use q  to stop the  game but
-	// close the window to get a profile
-	fd, err := os.Create("cpu.profile")
-	if err != nil {
-		log.Fatal(err)
-	}
-	defer fd.Close()
-
-	pprof.StartCPUProfile(fd)
-	defer pprof.StopCPUProfile()
-
-	// init
-	grid := Init()
-
-	// main loop
-	loopstart := time.Now()
-
-	Loop(grid)
-
-	loopend := time.Now()
-	diff := loopstart.Sub(loopend)
-	fmt.Printf("Loop took %.04f\n", diff.Seconds())
-}

various-tests/perf-2dim-pointers-array/go.mod

@@ -1,3 +0,0 @@
-module perf
-
-go 1.22

various-tests/perf-2dim-pointers-array/main.go

@@ -1,139 +0,0 @@
-package main
-
-import (
-	"fmt"
-	"log"
-	"math/rand"
-	"os"
-	"runtime/pprof"
-	"time"
-	"unsafe"
-)
-
-const (
-	max     int  = 1500
-	loops   int  = 5000
-	density int  = 8
-	debug   bool = false
-)
-
-type Cell struct {
-	State         bool
-	Neighbors     [8]*Cell
-	NeighborCount int
-}
-
-// https://dev.to/chigbeef_77/bool-int-but-stupid-in-go-3jb3
-func bool2int(b bool) int {
-	return int(*(*byte)(unsafe.Pointer(&b)))
-}
-
-func (cell *Cell) Count(x, y int) {
-	cell.NeighborCount = 0
-
-	for _, neighbor := range cell.Neighbors {
-		cell.NeighborCount += bool2int(neighbor.State)
-	}
-}
-
-func SetNeighbors(grid [][]Cell, x, y int) {
-	cells := []*Cell{}
-	deadcell := &Cell{}
-
-	for nbgX := -1; nbgX < 2; nbgX++ {
-		for nbgY := -1; nbgY < 2; nbgY++ {
-			var col, row int
-
-			if x+nbgX < 0 || x+nbgX >= max || y+nbgY < 0 || y+nbgY >= max {
-				cells = append(cells, deadcell)
-			} else {
-
-				col = x + nbgX
-				row = y + nbgY
-
-				if col == x && row == y {
-					// do not add self
-					continue
-				}
-
-				cells = append(cells, &grid[row][col])
-			}
-		}
-	}
-
-	for idx, cell := range cells {
-		grid[y][x].Neighbors[idx] = cell
-	}
-}
-
-func Init() [][]Cell {
-	grid := make([][]Cell, max)
-	for y := 0; y < max; y++ {
-		grid[y] = make([]Cell, max)
-		for x := 0; x < max; x++ {
-			if rand.Intn(density) == 1 {
-				grid[y][x].State = true
-			}
-		}
-	}
-
-	for y := 0; y < max; y++ {
-		for x := 0; x < max; x++ {
-			SetNeighbors(grid, x, y)
-		}
-	}
-
-	return grid
-}
-
-func Loop(grid [][]Cell) {
-	c := 0
-	for i := 0; i < loops; i++ {
-		for y := 0; y < max; y++ {
-			for x := 0; x < max; x++ {
-				cell := &grid[y][x]
-				state := cell.State
-
-				cell.Count(x, y)
-
-				if state && cell.NeighborCount > 1 {
-					if debug {
-						fmt.Printf(
-							"Loop %d - cell at %d,%d is %t and has %d living neighbors\n",
-							i, x, y, state, cell.NeighborCount)
-					}
-					c = 1
-				}
-			}
-		}
-	}
-
-	if c > 1 {
-		c = 0
-	}
-}
-
-func main() {
-	// enable  cpu profiling. Do  NOT use q  to stop the  game but
-	// close the window to get a profile
-	fd, err := os.Create("cpu.profile")
-	if err != nil {
-		log.Fatal(err)
-	}
-	defer fd.Close()
-
-	pprof.StartCPUProfile(fd)
-	defer pprof.StopCPUProfile()
-
-	// init
-	grid := Init()
-
-	// main loop
-	loopstart := time.Now()
-
-	Loop(grid)
-
-	loopend := time.Now()
-	diff := loopstart.Sub(loopend)
-	fmt.Printf("Loop took %.04f\n", diff.Seconds())
-}

various-tests/perf-2dim-pointers/go.mod

@@ -1,3 +0,0 @@
-module perf
-
-go 1.22

various-tests/perf-2dim-pointers/main.go

@@ -1,137 +0,0 @@
-package main
-
-import (
-	"fmt"
-	"log"
-	"math/rand"
-	"os"
-	"runtime/pprof"
-	"time"
-	"unsafe"
-)
-
-const (
-	max     int  = 1500
-	loops   int  = 5000
-	density int  = 8
-	debug   bool = false
-)
-
-type Cell struct {
-	State         bool
-	Neighbors     []*Cell
-	NeighborCount int
-}
-
-// https://dev.to/chigbeef_77/bool-int-but-stupid-in-go-3jb3
-func bool2int(b bool) int {
-	return int(*(*byte)(unsafe.Pointer(&b)))
-}
-
-func (cell *Cell) Count(x, y int) {
-	cell.NeighborCount = 0
-
-	for _, neighbor := range cell.Neighbors {
-		cell.NeighborCount += bool2int(neighbor.State)
-	}
-}
-
-func SetNeighbors(grid [][]Cell, x, y int) {
-	cells := []*Cell{}
-
-	for nbgX := -1; nbgX < 2; nbgX++ {
-		for nbgY := -1; nbgY < 2; nbgY++ {
-			var col, row int
-
-			if x+nbgX < 0 || x+nbgX >= max || y+nbgY < 0 || y+nbgY >= max {
-				continue
-			}
-
-			col = x + nbgX
-			row = y + nbgY
-
-			if col == x && row == y {
-				continue
-			}
-
-			cells = append(cells, &grid[row][col])
-		}
-	}
-
-	grid[y][x].Neighbors = make([]*Cell, len(cells))
-	for idx, cell := range cells {
-		grid[y][x].Neighbors[idx] = cell
-	}
-}
-
-func Init() [][]Cell {
-	grid := make([][]Cell, max)
-	for y := 0; y < max; y++ {
-		grid[y] = make([]Cell, max)
-		for x := 0; x < max; x++ {
-			if rand.Intn(density) == 1 {
-				grid[y][x].State = true
-			}
-		}
-	}
-
-	for y := 0; y < max; y++ {
-		for x := 0; x < max; x++ {
-			SetNeighbors(grid, x, y)
-		}
-	}
-
-	return grid
-}
-
-func Loop(grid [][]Cell) {
-	c := 0
-	for i := 0; i < loops; i++ {
-		for y := 0; y < max; y++ {
-			for x := 0; x < max; x++ {
-				cell := &grid[y][x]
-				state := cell.State
-
-				cell.Count(x, y)
-
-				if state && cell.NeighborCount > 1 {
-					if debug {
-						fmt.Printf(
-							"Loop %d - cell at %d,%d is %t and has %d living neighbors\n",
-							i, x, y, state, cell.NeighborCount)
-					}
-					c = 1
-				}
-			}
-		}
-	}
-
-	if c > 1 {
-		c = 0
-	}
-}
-
-func main() {
-	// enable  cpu profiling. Do  NOT use q  to stop the  game but
-	// close the window to get a profile
-	fd, err := os.Create("cpu.profile")
-	if err != nil {
-		log.Fatal(err)
-	}
-	defer fd.Close()
-
-	pprof.StartCPUProfile(fd)
-	defer pprof.StopCPUProfile()
-
-	// init
-	grid := Init()
-
-	// main loop
-	loopstart := time.Now()
-
-	Loop(grid)
-
-	loopend := time.Now()
-	diff := loopstart.Sub(loopend)
-	fmt.Printf("Loop took %.04f\n", diff.Seconds())
-}

various-tests/perf-2dim/go.mod

@@ -1,3 +0,0 @@
-module perf
-
-go 1.22

various-tests/perf-2dim/main.go

@@ -1,102 +0,0 @@
-package main
-
-import (
-	"fmt"
-	"log"
-	"math/rand"
-	"os"
-	"runtime/pprof"
-	"unsafe"
-)
-
-const (
-	max     int  = 1500
-	loops   int  = 5000
-	density int  = 8
-	debug   bool = false
-)
-
-// https://dev.to/chigbeef_77/bool-int-but-stupid-in-go-3jb3
-func bool2int(b bool) int {
-	return int(*(*byte)(unsafe.Pointer(&b)))
-}
-
-func Count(grid [][]bool, x, y int) int {
-	var sum int
-
-	for nbgX := -1; nbgX < 2; nbgX++ {
-		for nbgY := -1; nbgY < 2; nbgY++ {
-			var col, row int
-
-			if x+nbgX < 0 || x+nbgX >= max || y+nbgY < 0 || y+nbgY >= max {
-				continue
-			}
-
-			col = x + nbgX
-			row = y + nbgY
-
-			state := grid[row][col]
-			intstate := bool2int(state)
-			sum += intstate
-		}
-	}
-
-	sum -= bool2int(grid[y][x])
-
-	return sum
-}
-
-func Init() [][]bool {
-	grid := make([][]bool, max)
-	for y := 0; y < max; y++ {
-		grid[y] = make([]bool, max)
-		for x := 0; x < max; x++ {
-			if rand.Intn(density) == 1 {
-				grid[y][x] = true
-			}
-		}
-	}
-
-	return grid
-}
-
-func Loop(grid [][]bool) {
-	c := 0
-	for i := 0; i < loops; i++ {
-		for y := 0; y < max; y++ {
-			for x := 0; x < max; x++ {
-				state := grid[y][x]
-				neighbors := Count(grid, x, y)
-				if state && neighbors > 1 {
-					if debug {
-						fmt.Printf("Loop %d - cell at %d,%d is %t and has %d living neighbors\n", i, x, y, state, neighbors)
-					}
-					c = 1
-				}
-			}
-		}
-	}
-
-	if c > 1 {
-		c = 0
-	}
-}
-
-func main() {
-	// enable  cpu profiling. Do  NOT use q  to stop the  game but
-	// close the window to get a profile
-	fd, err := os.Create("cpu.profile")
-	if err != nil {
-		log.Fatal(err)
-	}
-	defer fd.Close()
-
-	pprof.StartCPUProfile(fd)
-	defer pprof.StopCPUProfile()
-
-	// init
-	grid := Init()
-
-	// main loop
-	Loop(grid)
-}

various-tests/perf-ecs/go.mod

@@ -1,5 +0,0 @@
-module perf
-
-go 1.22
-
-require github.com/mlange-42/arche v0.13.0 // indirect

various-tests/perf-ecs/go.sum

@@ -1,2 +0,0 @@
-github.com/mlange-42/arche v0.13.0 h1:ef0fu9qC2KIr8wIlVs+CgeQ5CSUJ8A1Hut6nXYdf+xk=
-github.com/mlange-42/arche v0.13.0/go.mod h1:bFktKnvGDj2kP01xar79z0hKwGHdnoaEZR8HWmJkIyU=

various-tests/perf-ecs/main.go

@@ -1,145 +0,0 @@
-package main
-
-import (
-	"fmt"
-	"log"
-	"math/rand"
-	"os"
-	"runtime/pprof"
-
-	"github.com/mlange-42/arche/ecs"
-	"github.com/mlange-42/arche/generic"
-)
-
-const (
-	max     int  = 1500
-	loops   int  = 5000
-	density int  = 8
-	debug   bool = false
-)
-
-// components
-type Pos struct {
-	X, Y, GridX, GridY int
-}
-
-type Cell struct {
-	State     bool
-	Neighbors [8]ecs.Entity
-}
-
-type ECS struct {
-	World  *ecs.World
-	Filter *generic.Filter2[Pos, Cell]
-	Map    *generic.Map2[Pos, Cell]
-}
-
-func (cell *Cell) NeighborCount(ECS *ECS) int {
-	sum := 0
-
-	for _, neighbor := range cell.Neighbors {
-		if ECS.World.Alive(neighbor) {
-			_, cel := ECS.Map.Get(neighbor)
-			if cel.State {
-				sum++
-			}
-		}
-	}
-
-	return sum
-}
-
-func Loop(ECS *ECS) {
-	c := 0
-
-	for i := 0; i < loops; i++ {
-		query := ECS.Filter.Query(ECS.World)
-
-		for query.Next() {
-			_, cel := query.Get()
-			if cel.State && cel.NeighborCount(ECS) > 1 {
-				c = 1
-			}
-		}
-	}
-
-	if c > 1 {
-		c = 0
-	}
-}
-
-func SetupWorld() *ECS {
-	world := ecs.NewWorld()
-
-	builder := generic.NewMap2[Pos, Cell](&world)
-
-	// we need a temporary grid in order to find out neighbors
-	grid := [max][max]ecs.Entity{}
-
-	// setup entities
-	for y := 0; y < max; y++ {
-		for x := 0; x < max; x++ {
-			e := builder.New()
-			pos, cell := builder.Get(e)
-			pos.X = x
-			pos.Y = y // pos.GridX = x*cellsize
-
-			cell.State = false
-			if rand.Intn(density) == 1 {
-				cell.State = true
-			}
-
-			// store to tmp grid
-			grid[y][x] = e
-		}
-	}
-
-	// global filter
-	filter := generic.NewFilter2[Pos, Cell]()
-
-	query := filter.Query(&world)
-
-	for query.Next() {
-		pos, cel := query.Get()
-
-		n := 0
-		for x := -1; x < 2; x++ {
-			for y := -1; y < 2; y++ {
-				XX := pos.X + x
-				YY := pos.Y + y
-				if XX < 0 || XX >= max || YY < 0 || YY >= max {
-					continue
-				}
-
-				if pos.X != XX || pos.Y != YY {
-					cel.Neighbors[n] = grid[XX][YY]
-					n++
-				}
-			}
-		}
-	}
-
-	return &ECS{World: &world, Filter: filter, Map: &builder}
-}
-
-func main() {
-	// enable  cpu profiling. Do  NOT use q  to stop the  game but
-	// close the window to get a profile
-	fd, err := os.Create("cpu.profile")
-	if err != nil {
-		log.Fatal(err)
-	}
-	defer fd.Close()
-
-	pprof.StartCPUProfile(fd)
-	defer pprof.StopCPUProfile()
-
-	// init
-	fmt.Print("Setup ... ")
-	ECS := SetupWorld()
-	fmt.Println("done")
-	fmt.Println(ECS.World.Stats())
-
-	// main loop
-	Loop(ECS)
-}

various-tests/writepixel-pointers-int/go.mod

@@ -1,13 +0,0 @@
-module testgol
-
-go 1.22
-
-require (
-	github.com/ebitengine/gomobile v0.0.0-20240518074828-e86332849895 // indirect
-	github.com/ebitengine/hideconsole v1.0.0 // indirect
-	github.com/ebitengine/purego v0.7.0 // indirect
-	github.com/hajimehoshi/ebiten/v2 v2.7.4 // indirect
-	github.com/jezek/xgb v1.1.1 // indirect
-	golang.org/x/sync v0.7.0 // indirect
-	golang.org/x/sys v0.20.0 // indirect
-)

various-tests/writepixel-pointers-int/go.sum

@@ -1,14 +0,0 @@
-github.com/ebitengine/gomobile v0.0.0-20240518074828-e86332849895 h1:48bCqKTuD7Z0UovDfvpCn7wZ0GUZ+yosIteNDthn3FU=
-github.com/ebitengine/gomobile v0.0.0-20240518074828-e86332849895/go.mod h1:XZdLv05c5hOZm3fM2NlJ92FyEZjnslcMcNRrhxs8+8M=
-github.com/ebitengine/hideconsole v1.0.0 h1:5J4U0kXF+pv/DhiXt5/lTz0eO5ogJ1iXb8Yj1yReDqE=
-github.com/ebitengine/hideconsole v1.0.0/go.mod h1:hTTBTvVYWKBuxPr7peweneWdkUwEuHuB3C1R/ielR1A=
-github.com/ebitengine/purego v0.7.0 h1:HPZpl61edMGCEW6XK2nsR6+7AnJ3unUxpTZBkkIXnMc=
-github.com/ebitengine/purego v0.7.0/go.mod h1:ah1In8AOtksoNK6yk5z1HTJeUkC1Ez4Wk2idgGslMwQ=
-github.com/hajimehoshi/ebiten/v2 v2.7.4 h1:X+heODRQ3Ie9F9QFjm24gEZqQd5FSfR9XuT2XfHwgf8=
-github.com/hajimehoshi/ebiten/v2 v2.7.4/go.mod h1:H2pHVgq29rfm5yeQ7jzWOM3VHsjo7/AyucODNLOhsVY=
-github.com/jezek/xgb v1.1.1 h1:bE/r8ZZtSv7l9gk6nU0mYx51aXrvnyb44892TwSaqS4=
-github.com/jezek/xgb v1.1.1/go.mod h1:nrhwO0FX/enq75I7Y7G8iN1ubpSGZEiA3v9e9GyRFlk=
-golang.org/x/sync v0.7.0 h1:YsImfSBoP9QPYL0xyKJPq0gcaJdG3rInoqxTWbfQu9M=
-golang.org/x/sync v0.7.0/go.mod h1:Czt+wKu1gCyEFDUtn0jG5QVvpJ6rzVqr5aXyt9drQfk=
-golang.org/x/sys v0.20.0 h1:Od9JTbYCk261bKm4M/mw7AklTlFYIa0bIp9BgSm1S8Y=
-golang.org/x/sys v0.20.0/go.mod h1:/VUhepiaJMQUp4+oa/7Zr1D23ma6VTLIYjOOTFZPUcA=

various-tests/writepixel-pointers-int/main.go

@@ -1,306 +0,0 @@
-package main
-
-import (
-	"fmt"
-	"log"
-	"math/rand"
-	"os"
-	"os/exec"
-	"runtime/pprof"
-	"unsafe"
-
-	"github.com/hajimehoshi/ebiten/v2"
-	"github.com/hajimehoshi/ebiten/v2/inpututil"
-)
-
-type Images struct {
-	Black, White *ebiten.Image
-}
-
-type Cell struct {
-	State         uint8
-	Neighbors     [8]*Cell
-	NeighborCount int
-}
-
-func bool2int(b bool) int {
-	return int(*(*byte)(unsafe.Pointer(&b)))
-}
-
-func (cell *Cell) Count(x, y int) uint8 {
-	var sum uint8
-
-	for idx := 0; idx < cell.NeighborCount; idx++ {
-		sum += cell.Neighbors[idx].State
-	}
-
-	return sum
-}
-
-func SetNeighbors(grid [][]*Cell, x, y, width, height int) {
-	idx := 0
-	for nbgX := -1; nbgX < 2; nbgX++ {
-		for nbgY := -1; nbgY < 2; nbgY++ {
-			var col, row int
-
-			if x+nbgX < 0 || x+nbgX >= width || y+nbgY < 0 || y+nbgY >= height {
-				continue
-			}
-
-			col = x + nbgX
-			row = y + nbgY
-
-			if col == x && row == y {
-				continue
-			}
-
-			grid[y][x].Neighbors[idx] = grid[row][col]
-			grid[y][x].NeighborCount++
-			idx++
-		}
-	}
-}
-
-type Grid struct {
-	Data                   [][]*Cell
-	Width, Height, Density int
-}
-
-// Create new empty grid and allocate Data according to provided dimensions
-func NewGrid(width, height, density int) *Grid {
-	grid := &Grid{
-		Height:  height,
-		Width:   width,
-		Density: density,
-		Data:    make([][]*Cell, height),
-	}
-
-	for y := 0; y < height; y++ {
-		grid.Data[y] = make([]*Cell, width)
-		for x := 0; x < width; x++ {
-			grid.Data[y][x] = &Cell{}
-
-			if rand.Intn(density) == 1 {
-				grid.Data[y][x].State = 1
-			}
-		}
-	}
-
-	for y := 0; y < height; y++ {
-		for x := 0; x < width; x++ {
-			SetNeighbors(grid.Data, x, y, width, height)
-		}
-	}
-
-	return grid
-}
-
-type Game struct {
-	Width, Height, Cellsize, Density int
-	ScreenWidth, ScreenHeight        int
-	Grids                            []*Grid
-	Index                            int
-	Elapsed                          int64
-	TPG                              int64 // adjust game speed independently of TPS
-	Pause, Debug, Profile, Gridlines bool
-	Pixels                           []byte
-	OffScreen                        *ebiten.Image
-}
-
-func (game *Game) Layout(outsideWidth, outsideHeight int) (int, int) {
-	return game.ScreenWidth, game.ScreenHeight
-}
-
-// live console output of the grid
-func (game *Game) DebugDump() {
-	cmd := exec.Command("clear")
-	cmd.Stdout = os.Stdout
-	cmd.Run()
-
-	if game.Debug {
-		for y := 0; y < game.Height; y++ {
-			for x := 0; x < game.Width; x++ {
-				if game.Grids[game.Index].Data[y][x].State == 1 {
-					fmt.Print("XX")
-				} else {
-					fmt.Print("  ")
-				}
-			}
-			fmt.Println()
-		}
-	}
-	fmt.Printf("FPS: %0.2f\n", ebiten.ActualTPS())
-}
-
-func (game *Game) Init() {
-	// setup two grids, one for display, one for next state
-	grida := NewGrid(game.Width, game.Height, game.Density)
-	gridb := NewGrid(game.Width, game.Height, game.Density)
-
-	game.Grids = []*Grid{
-		grida,
-		gridb,
-	}
-
-	game.Pixels = make([]byte, game.ScreenWidth*game.ScreenHeight*4)
-
-	game.OffScreen = ebiten.NewImage(game.ScreenWidth, game.ScreenHeight)
-}
-
-// count the living neighbors of a cell
-func (game *Game) CountNeighbors(x, y int) uint8 {
-	return game.Grids[game.Index].Data[y][x].Count(x, y)
-}
-
-// the heart of the game
-func (game *Game) CheckRule(state uint8, neighbors uint8) uint8 {
-	var nextstate uint8
-
-	if state == 1 && neighbors == 3 {
-		nextstate = 1
-	} else if state == 1 && (neighbors == 2 || neighbors == 3) {
-		nextstate = 1
-	} else {
-		nextstate = 0
-	}
-
-	return nextstate
-}
-
-// we only  update the cells if  we are not  in pause state or  if the
-// game timer (TPG) is elapsed.
-func (game *Game) UpdateCells() {
-	if game.Pause {
-		return
-	}
-
-	if game.Elapsed < game.TPG {
-		game.Elapsed++
-		return
-	}
-
-	// next grid index. we only have to, so we just xor it
-	next := game.Index ^ 1
-
-	// calculate cell life state, this is the actual game of life
-	for y := 0; y < game.Height; y++ {
-		for x := 0; x < game.Width; x++ {
-			state := game.Grids[game.Index].Data[y][x].State
-			neighbors := game.CountNeighbors(x, y)
-
-			// actually apply the current rules
-			nextstate := game.CheckRule(state, neighbors)
-
-			// change state of current cell in next grid
-			game.Grids[next].Data[y][x].State = nextstate
-		}
-	}
-
-	// switch grid for rendering
-	game.Index ^= 1
-
-	game.Elapsed = 0
-
-	game.UpdatePixels()
-}
-
-func (game *Game) Update() error {
-	game.UpdateCells()
-
-	if inpututil.IsKeyJustPressed(ebiten.KeySpace) {
-		game.Pause = !game.Pause
-	}
-
-	return nil
-}
-
-/*
-*
-r, g, b := color(it)
-
-	78             p := 4 * (i + j*screenWidth)
-	79             gm.offscreenPix[p] = r
-	80             gm.offscreenPix[p+1] = g
-	81             gm.offscreenPix[p+2] = b
-	82             gm.offscreenPix[p+3] = 0xff
-*/
-func (game *Game) UpdatePixels() {
-	var col byte
-
-	gridx := 0
-	gridy := 0
-	idx := 0
-
-	for y := 0; y < game.ScreenHeight; y++ {
-		for x := 0; x < game.ScreenWidth; x++ {
-			gridx = x / game.Cellsize
-			gridy = y / game.Cellsize
-
-			col = 0xff
-			if game.Grids[game.Index].Data[gridy][gridx].State == 1 {
-				col = 0x0
-			}
-
-			if game.Gridlines {
-				if x%game.Cellsize == 0 || y%game.Cellsize == 0 {
-					col = 128
-				}
-			}
-
-			idx = 4 * (x + y*game.ScreenWidth)
-
-			game.Pixels[idx] = col
-			game.Pixels[idx+1] = col
-			game.Pixels[idx+2] = col
-			game.Pixels[idx+3] = 0xff
-
-			idx++
-		}
-	}
-
-	game.OffScreen.WritePixels(game.Pixels)
-}
-
-func (game *Game) Draw(screen *ebiten.Image) {
-	screen.DrawImage(game.OffScreen, nil)
-	game.DebugDump()
-}
-
-func main() {
-	size := 1500
-
-	game := &Game{
-		Width:     size,
-		Height:    size,
-		Cellsize:  4,
-		Density:   8,
-		TPG:       10,
-		Debug:     false,
-		Profile:   true,
-		Gridlines: false,
-	}
-
-	game.ScreenWidth = game.Width * game.Cellsize
-	game.ScreenHeight = game.Height * game.Cellsize
-
-	game.Init()
-
-	ebiten.SetWindowSize(game.ScreenWidth, game.ScreenHeight)
-	ebiten.SetWindowTitle("triangle conway's game of life")
-	ebiten.SetWindowResizingMode(ebiten.WindowResizingModeEnabled)
-
-	if game.Profile {
-		fd, err := os.Create("cpu.profile")
-		if err != nil {
-			log.Fatal(err)
-		}
-		defer fd.Close()
-
-		pprof.StartCPUProfile(fd)
-		defer pprof.StopCPUProfile()
-	}
-
-	if err := ebiten.RunGame(game); err != nil {
-		log.Fatal(err)
-	}
-}

various-tests/writepixel-pointers/go.mod

@@ -1,13 +0,0 @@
-module testgol
-
-go 1.22
-
-require (
-	github.com/ebitengine/gomobile v0.0.0-20240518074828-e86332849895 // indirect
-	github.com/ebitengine/hideconsole v1.0.0 // indirect
-	github.com/ebitengine/purego v0.7.0 // indirect
-	github.com/hajimehoshi/ebiten/v2 v2.7.4 // indirect
-	github.com/jezek/xgb v1.1.1 // indirect
-	golang.org/x/sync v0.7.0 // indirect
-	golang.org/x/sys v0.20.0 // indirect
-)

various-tests/writepixel-pointers/go.sum

@@ -1,14 +0,0 @@
-github.com/ebitengine/gomobile v0.0.0-20240518074828-e86332849895 h1:48bCqKTuD7Z0UovDfvpCn7wZ0GUZ+yosIteNDthn3FU=
-github.com/ebitengine/gomobile v0.0.0-20240518074828-e86332849895/go.mod h1:XZdLv05c5hOZm3fM2NlJ92FyEZjnslcMcNRrhxs8+8M=
-github.com/ebitengine/hideconsole v1.0.0 h1:5J4U0kXF+pv/DhiXt5/lTz0eO5ogJ1iXb8Yj1yReDqE=
-github.com/ebitengine/hideconsole v1.0.0/go.mod h1:hTTBTvVYWKBuxPr7peweneWdkUwEuHuB3C1R/ielR1A=
-github.com/ebitengine/purego v0.7.0 h1:HPZpl61edMGCEW6XK2nsR6+7AnJ3unUxpTZBkkIXnMc=
-github.com/ebitengine/purego v0.7.0/go.mod h1:ah1In8AOtksoNK6yk5z1HTJeUkC1Ez4Wk2idgGslMwQ=
-github.com/hajimehoshi/ebiten/v2 v2.7.4 h1:X+heODRQ3Ie9F9QFjm24gEZqQd5FSfR9XuT2XfHwgf8=
-github.com/hajimehoshi/ebiten/v2 v2.7.4/go.mod h1:H2pHVgq29rfm5yeQ7jzWOM3VHsjo7/AyucODNLOhsVY=
-github.com/jezek/xgb v1.1.1 h1:bE/r8ZZtSv7l9gk6nU0mYx51aXrvnyb44892TwSaqS4=
-github.com/jezek/xgb v1.1.1/go.mod h1:nrhwO0FX/enq75I7Y7G8iN1ubpSGZEiA3v9e9GyRFlk=
-golang.org/x/sync v0.7.0 h1:YsImfSBoP9QPYL0xyKJPq0gcaJdG3rInoqxTWbfQu9M=
-golang.org/x/sync v0.7.0/go.mod h1:Czt+wKu1gCyEFDUtn0jG5QVvpJ6rzVqr5aXyt9drQfk=
-golang.org/x/sys v0.20.0 h1:Od9JTbYCk261bKm4M/mw7AklTlFYIa0bIp9BgSm1S8Y=
-golang.org/x/sys v0.20.0/go.mod h1:/VUhepiaJMQUp4+oa/7Zr1D23ma6VTLIYjOOTFZPUcA=

various-tests/writepixel-pointers/main.go

@@ -1,306 +0,0 @@
-package main
-
-import (
-	"fmt"
-	"log"
-	"math/rand"
-	"os"
-	"os/exec"
-	"runtime/pprof"
-	"unsafe"
-
-	"github.com/hajimehoshi/ebiten/v2"
-	"github.com/hajimehoshi/ebiten/v2/inpututil"
-)
-
-type Images struct {
-	Black, White *ebiten.Image
-}
-
-type Cell struct {
-	State         bool
-	Neighbors     [8]*Cell
-	NeighborCount int
-}
-
-func bool2int(b bool) int {
-	return int(*(*byte)(unsafe.Pointer(&b)))
-}
-
-func (cell *Cell) Count(x, y int) int {
-	sum := 0
-
-	for idx := 0; idx < cell.NeighborCount; idx++ {
-		sum += bool2int(cell.Neighbors[idx].State)
-	}
-
-	return sum
-}
-
-func SetNeighbors(grid [][]*Cell, x, y, width, height int) {
-	idx := 0
-	for nbgX := -1; nbgX < 2; nbgX++ {
-		for nbgY := -1; nbgY < 2; nbgY++ {
-			var col, row int
-
-			if x+nbgX < 0 || x+nbgX >= width || y+nbgY < 0 || y+nbgY >= height {
-				continue
-			}
-
-			col = x + nbgX
-			row = y + nbgY
-
-			if col == x && row == y {
-				continue
-			}
-
-			grid[y][x].Neighbors[idx] = grid[row][col]
-			grid[y][x].NeighborCount++
-			idx++
-		}
-	}
-}
-
-type Grid struct {
-	Data                   [][]*Cell
-	Width, Height, Density int
-}
-
-// Create new empty grid and allocate Data according to provided dimensions
-func NewGrid(width, height, density int) *Grid {
-	grid := &Grid{
-		Height:  height,
-		Width:   width,
-		Density: density,
-		Data:    make([][]*Cell, height),
-	}
-
-	for y := 0; y < height; y++ {
-		grid.Data[y] = make([]*Cell, width)
-		for x := 0; x < width; x++ {
-			grid.Data[y][x] = &Cell{}
-
-			if rand.Intn(density) == 1 {
-				grid.Data[y][x].State = true
-			}
-		}
-	}
-
-	for y := 0; y < height; y++ {
-		for x := 0; x < width; x++ {
-			SetNeighbors(grid.Data, x, y, width, height)
-		}
-	}
-
-	return grid
-}
-
-type Game struct {
-	Width, Height, Cellsize, Density int
-	ScreenWidth, ScreenHeight        int
-	Grids                            []*Grid
-	Index                            int
-	Elapsed                          int64
-	TPG                              int64 // adjust game speed independently of TPS
-	Pause, Debug, Profile, Gridlines bool
-	Pixels                           []byte
-	OffScreen                        *ebiten.Image
-}
-
-func (game *Game) Layout(outsideWidth, outsideHeight int) (int, int) {
-	return game.ScreenWidth, game.ScreenHeight
-}
-
-// live console output of the grid
-func (game *Game) DebugDump() {
-	cmd := exec.Command("clear")
-	cmd.Stdout = os.Stdout
-	cmd.Run()
-
-	if game.Debug {
-		for y := 0; y < game.Height; y++ {
-			for x := 0; x < game.Width; x++ {
-				if game.Grids[game.Index].Data[y][x].State {
-					fmt.Print("XX")
-				} else {
-					fmt.Print("  ")
-				}
-			}
-			fmt.Println()
-		}
-	}
-	fmt.Printf("FPS: %0.2f\n", ebiten.ActualTPS())
-}
-
-func (game *Game) Init() {
-	// setup two grids, one for display, one for next state
-	grida := NewGrid(game.Width, game.Height, game.Density)
-	gridb := NewGrid(game.Width, game.Height, game.Density)
-
-	game.Grids = []*Grid{
-		grida,
-		gridb,
-	}
-
-	game.Pixels = make([]byte, game.ScreenWidth*game.ScreenHeight*4)
-
-	game.OffScreen = ebiten.NewImage(game.ScreenWidth, game.ScreenHeight)
-}
-
-// count the living neighbors of a cell
-func (game *Game) CountNeighbors(x, y int) int {
-	return game.Grids[game.Index].Data[y][x].Count(x, y)
-}
-
-// the heart of the game
-func (game *Game) CheckRule(state bool, neighbors int) bool {
-	var nextstate bool
-
-	if state && neighbors == 3 {
-		nextstate = true
-	} else if state && (neighbors == 2 || neighbors == 3) {
-		nextstate = true
-	} else {
-		nextstate = false
-	}
-
-	return nextstate
-}
-
-// we only  update the cells if  we are not  in pause state or  if the
-// game timer (TPG) is elapsed.
-func (game *Game) UpdateCells() {
-	if game.Pause {
-		return
-	}
-
-	if game.Elapsed < game.TPG {
-		game.Elapsed++
-		return
-	}
-
-	// next grid index. we only have to, so we just xor it
-	next := game.Index ^ 1
-
-	// calculate cell life state, this is the actual game of life
-	for y := 0; y < game.Height; y++ {
-		for x := 0; x < game.Width; x++ {
-			state := game.Grids[game.Index].Data[y][x].State
-			neighbors := game.CountNeighbors(x, y)
-
-			// actually apply the current rules
-			nextstate := game.CheckRule(state, neighbors)
-
-			// change state of current cell in next grid
-			game.Grids[next].Data[y][x].State = nextstate
-		}
-	}
-
-	// switch grid for rendering
-	game.Index ^= 1
-
-	game.Elapsed = 0
-
-	game.UpdatePixels()
-}
-
-func (game *Game) Update() error {
-	game.UpdateCells()
-
-	if inpututil.IsKeyJustPressed(ebiten.KeySpace) {
-		game.Pause = !game.Pause
-	}
-
-	return nil
-}
-
-/*
-*
-r, g, b := color(it)
-
-	78             p := 4 * (i + j*screenWidth)
-	79             gm.offscreenPix[p] = r
-	80             gm.offscreenPix[p+1] = g
-	81             gm.offscreenPix[p+2] = b
-	82             gm.offscreenPix[p+3] = 0xff
-*/
-func (game *Game) UpdatePixels() {
-	var col byte
-
-	gridx := 0
-	gridy := 0
-	idx := 0
-
-	for y := 0; y < game.ScreenHeight; y++ {
-		for x := 0; x < game.ScreenWidth; x++ {
-			gridx = x / game.Cellsize
-			gridy = y / game.Cellsize
-
-			col = 0xff
-			if game.Grids[game.Index].Data[gridy][gridx].State {
-				col = 0x0
-			}
-
-			if game.Gridlines {
-				if x%game.Cellsize == 0 || y%game.Cellsize == 0 {
-					col = 128
-				}
-			}
-
-			idx = 4 * (x + y*game.ScreenWidth)
-
-			game.Pixels[idx] = col
-			game.Pixels[idx+1] = col
-			game.Pixels[idx+2] = col
-			game.Pixels[idx+3] = 0xff
-
-			idx++
-		}
-	}
-
-	game.OffScreen.WritePixels(game.Pixels)
-}
-
-func (game *Game) Draw(screen *ebiten.Image) {
-	screen.DrawImage(game.OffScreen, nil)
-	game.DebugDump()
-}
-
-func main() {
-	size := 1500
-
-	game := &Game{
-		Width:     size,
-		Height:    size,
-		Cellsize:  4,
-		Density:   8,
-		TPG:       10,
-		Debug:     false,
-		Profile:   true,
-		Gridlines: false,
-	}
-
-	game.ScreenWidth = game.Width * game.Cellsize
-	game.ScreenHeight = game.Height * game.Cellsize
-
-	game.Init()
-
-	ebiten.SetWindowSize(game.ScreenWidth, game.ScreenHeight)
-	ebiten.SetWindowTitle("triangle conway's game of life")
-	ebiten.SetWindowResizingMode(ebiten.WindowResizingModeEnabled)
-
-	if game.Profile {
-		fd, err := os.Create("cpu.profile")
-		if err != nil {
-			log.Fatal(err)
-		}
-		defer fd.Close()
-
-		pprof.StartCPUProfile(fd)
-		defer pprof.StopCPUProfile()
-	}
-
-	if err := ebiten.RunGame(game); err != nil {
-		log.Fatal(err)
-	}
-}

various-tests/writepixel/go.mod

@@ -1,13 +0,0 @@
-module testgol
-
-go 1.22
-
-require (
-	github.com/ebitengine/gomobile v0.0.0-20240518074828-e86332849895 // indirect
-	github.com/ebitengine/hideconsole v1.0.0 // indirect
-	github.com/ebitengine/purego v0.7.0 // indirect
-	github.com/hajimehoshi/ebiten/v2 v2.7.4 // indirect
-	github.com/jezek/xgb v1.1.1 // indirect
-	golang.org/x/sync v0.7.0 // indirect
-	golang.org/x/sys v0.20.0 // indirect
-)

various-tests/writepixel/go.sum

@@ -1,14 +0,0 @@
-github.com/ebitengine/gomobile v0.0.0-20240518074828-e86332849895 h1:48bCqKTuD7Z0UovDfvpCn7wZ0GUZ+yosIteNDthn3FU=
-github.com/ebitengine/gomobile v0.0.0-20240518074828-e86332849895/go.mod h1:XZdLv05c5hOZm3fM2NlJ92FyEZjnslcMcNRrhxs8+8M=
-github.com/ebitengine/hideconsole v1.0.0 h1:5J4U0kXF+pv/DhiXt5/lTz0eO5ogJ1iXb8Yj1yReDqE=
-github.com/ebitengine/hideconsole v1.0.0/go.mod h1:hTTBTvVYWKBuxPr7peweneWdkUwEuHuB3C1R/ielR1A=
-github.com/ebitengine/purego v0.7.0 h1:HPZpl61edMGCEW6XK2nsR6+7AnJ3unUxpTZBkkIXnMc=
-github.com/ebitengine/purego v0.7.0/go.mod h1:ah1In8AOtksoNK6yk5z1HTJeUkC1Ez4Wk2idgGslMwQ=
-github.com/hajimehoshi/ebiten/v2 v2.7.4 h1:X+heODRQ3Ie9F9QFjm24gEZqQd5FSfR9XuT2XfHwgf8=
-github.com/hajimehoshi/ebiten/v2 v2.7.4/go.mod h1:H2pHVgq29rfm5yeQ7jzWOM3VHsjo7/AyucODNLOhsVY=
-github.com/jezek/xgb v1.1.1 h1:bE/r8ZZtSv7l9gk6nU0mYx51aXrvnyb44892TwSaqS4=
-github.com/jezek/xgb v1.1.1/go.mod h1:nrhwO0FX/enq75I7Y7G8iN1ubpSGZEiA3v9e9GyRFlk=
-golang.org/x/sync v0.7.0 h1:YsImfSBoP9QPYL0xyKJPq0gcaJdG3rInoqxTWbfQu9M=
-golang.org/x/sync v0.7.0/go.mod h1:Czt+wKu1gCyEFDUtn0jG5QVvpJ6rzVqr5aXyt9drQfk=
-golang.org/x/sys v0.20.0 h1:Od9JTbYCk261bKm4M/mw7AklTlFYIa0bIp9BgSm1S8Y=
-golang.org/x/sys v0.20.0/go.mod h1:/VUhepiaJMQUp4+oa/7Zr1D23ma6VTLIYjOOTFZPUcA=

various-tests/writepixel/main.go

@@ -1,277 +0,0 @@
-package main
-
-import (
-	"fmt"
-	"log"
-	"math/rand"
-	"os"
-	"os/exec"
-	"runtime/pprof"
-
-	"github.com/hajimehoshi/ebiten/v2"
-	"github.com/hajimehoshi/ebiten/v2/inpututil"
-)
-
-type Images struct {
-	Black, White *ebiten.Image
-}
-
-type Grid struct {
-	Data                   [][]int64
-	Width, Height, Density int
-}
-
-// Create new empty grid and allocate Data according to provided dimensions
-func NewGrid(width, height, density int) *Grid {
-	grid := &Grid{
-		Height:  height,
-		Width:   width,
-		Density: density,
-		Data:    make([][]int64, height),
-	}
-
-	for y := 0; y < height; y++ {
-		grid.Data[y] = make([]int64, width)
-	}
-
-	return grid
-}
-
-type Game struct {
-	Width, Height, Cellsize, Density int
-	ScreenWidth, ScreenHeight        int
-	Grids                            []*Grid
-	Index                            int
-	Elapsed                          int64
-	TPG                              int64 // adjust game speed independently of TPS
-	Pause, Debug, Profile, Gridlines bool
-	Pixels                           []byte
-	OffScreen                        *ebiten.Image
-}
-
-func (game *Game) Layout(outsideWidth, outsideHeight int) (int, int) {
-	return game.ScreenWidth, game.ScreenHeight
-}
-
-// live console output of the grid
-func (game *Game) DebugDump() {
-	cmd := exec.Command("clear")
-	cmd.Stdout = os.Stdout
-	cmd.Run()
-
-	if game.Debug {
-		for y := 0; y < game.Height; y++ {
-			for x := 0; x < game.Width; x++ {
-				if game.Grids[game.Index].Data[y][x] == 1 {
-					fmt.Print("XX")
-				} else {
-					fmt.Print("  ")
-				}
-			}
-			fmt.Println()
-		}
-	}
-	fmt.Printf("FPS: %0.2f\n", ebiten.ActualTPS())
-}
-
-func (game *Game) Init() {
-	// setup two grids, one for display, one for next state
-	grida := NewGrid(game.Width, game.Height, game.Density)
-	gridb := NewGrid(game.Width, game.Height, game.Density)
-
-	for y := 0; y < game.Height; y++ {
-		for x := 0; x < game.Width; x++ {
-			if rand.Intn(game.Density) == 1 {
-				grida.Data[y][x] = 1
-			}
-		}
-
-	}
-
-	game.Grids = []*Grid{
-		grida,
-		gridb,
-	}
-
-	game.Pixels = make([]byte, game.ScreenWidth*game.ScreenHeight*4)
-
-	game.OffScreen = ebiten.NewImage(game.ScreenWidth, game.ScreenHeight)
-}
-
-// count the living neighbors of a cell
-func (game *Game) CountNeighbors(x, y int) int64 {
-	var sum int64
-
-	for nbgX := -1; nbgX < 2; nbgX++ {
-		for nbgY := -1; nbgY < 2; nbgY++ {
-			var col, row int
-
-			// Wrap  mode we look  at all the 8  neighbors surrounding
-			//  us.  In  case we  are  on an  edge we'll  look at  the
-			// neighbor on  the other side of the  grid, thus wrapping
-			// lookahead around using the mod() function.
-			col = (x + nbgX + game.Width) % game.Width
-			row = (y + nbgY + game.Height) % game.Height
-
-			sum += game.Grids[game.Index].Data[row][col]
-		}
-	}
-
-	// don't count ourselfes though
-	sum -= game.Grids[game.Index].Data[y][x]
-
-	return sum
-}
-
-// the heart of the game
-func (game *Game) CheckRule(state int64, neighbors int64) int64 {
-	var nextstate int64
-
-	if state == 0 && neighbors == 3 {
-		nextstate = 1
-	} else if state == 1 && (neighbors == 2 || neighbors == 3) {
-		nextstate = 1
-	} else {
-		nextstate = 0
-	}
-
-	return nextstate
-}
-
-// we only  update the cells if  we are not  in pause state or  if the
-// game timer (TPG) is elapsed.
-func (game *Game) UpdateCells() {
-	if game.Pause {
-		return
-	}
-
-	if game.Elapsed < game.TPG {
-		game.Elapsed++
-		return
-	}
-
-	// next grid index. we only have to, so we just xor it
-	next := game.Index ^ 1
-
-	// calculate cell life state, this is the actual game of life
-	for y := 0; y < game.Height; y++ {
-		for x := 0; x < game.Width; x++ {
-			state := game.Grids[game.Index].Data[y][x] // 0|1 == dead or alive
-			neighbors := game.CountNeighbors(x, y)     // alive neighbor count
-
-			// actually apply the current rules
-			nextstate := game.CheckRule(state, neighbors)
-
-			// change state of current cell in next grid
-			game.Grids[next].Data[y][x] = nextstate
-		}
-	}
-
-	// switch grid for rendering
-	game.Index ^= 1
-
-	game.Elapsed = 0
-
-	game.UpdatePixels()
-}
-
-func (game *Game) Update() error {
-	game.UpdateCells()
-
-	if inpututil.IsKeyJustPressed(ebiten.KeySpace) {
-		game.Pause = !game.Pause
-	}
-
-	return nil
-}
-
-/*
-*
-r, g, b := color(it)
-
-	78             p := 4 * (i + j*screenWidth)
-	79             gm.offscreenPix[p] = r
-	80             gm.offscreenPix[p+1] = g
-	81             gm.offscreenPix[p+2] = b
-	82             gm.offscreenPix[p+3] = 0xff
-*/
-func (game *Game) UpdatePixels() {
-	var col byte
-
-	gridx := 0
-	gridy := 0
-	idx := 0
-
-	for y := 0; y < game.ScreenHeight; y++ {
-		for x := 0; x < game.ScreenWidth; x++ {
-			gridx = x / game.Cellsize
-			gridy = y / game.Cellsize
-
-			col = 0xff
-			if game.Grids[game.Index].Data[gridy][gridx] == 1 {
-				col = 0x0
-			}
-
-			if game.Gridlines {
-				if x%game.Cellsize == 0 || y%game.Cellsize == 0 {
-					col = 128
-				}
-			}
-
-			idx = 4 * (x + y*game.ScreenWidth)
-
-			game.Pixels[idx] = col
-			game.Pixels[idx+1] = col
-			game.Pixels[idx+2] = col
-			game.Pixels[idx+3] = 0xff
-
-			idx++
-		}
-	}
-
-	game.OffScreen.WritePixels(game.Pixels)
-}
-
-func (game *Game) Draw(screen *ebiten.Image) {
-	screen.DrawImage(game.OffScreen, nil)
-	game.DebugDump()
-}
-
-func main() {
-	size := 1500
-
-	game := &Game{
-		Width:     size,
-		Height:    size,
-		Cellsize:  4,
-		Density:   8,
-		TPG:       10,
-		Debug:     false,
-		Profile:   true,
-		Gridlines: false,
-	}
-
-	game.ScreenWidth = game.Width * game.Cellsize
-	game.ScreenHeight = game.Height * game.Cellsize
-
-	game.Init()
-
-	ebiten.SetWindowSize(game.ScreenWidth, game.ScreenHeight)
-	ebiten.SetWindowTitle("triangle conway's game of life")
-	ebiten.SetWindowResizingMode(ebiten.WindowResizingModeEnabled)
-
-	if game.Profile {
-		fd, err := os.Create("cpu.profile")
-		if err != nil {
-			log.Fatal(err)
-		}
-		defer fd.Close()
-
-		pprof.StartCPUProfile(fd)
-		defer pprof.StopCPUProfile()
-	}
-
-	if err := ebiten.RunGame(game); err != nil {
-		log.Fatal(err)
-	}
-}