mirror of
https://codeberg.org/scip/golsky.git
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109 lines
2.9 KiB
Go
109 lines
2.9 KiB
Go
package main
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import (
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"fmt"
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"log"
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"os"
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"github.com/tlinden/golsky/rle"
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"github.com/hajimehoshi/ebiten/v2"
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"github.com/spf13/pflag"
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)
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const (
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VERSION = "v0.0.5"
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Alive = 1
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Dead = 0
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)
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func GetRLE(filename string) *rle.RLE {
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if filename == "" {
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return nil
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}
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content, err := os.ReadFile(filename)
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if err != nil {
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log.Fatal(err)
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}
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parsedRle, err := rle.Parse(string(content))
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if err != nil {
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log.Fatalf("failed to load RLE pattern file: %s", err)
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}
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return &parsedRle
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}
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func main() {
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game := &Game{}
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showversion := false
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var rule string
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var rlefile string
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// commandline params, most configure directly game flags
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pflag.IntVarP(&game.Width, "width", "W", 40, "grid width in cells")
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pflag.IntVarP(&game.Height, "height", "H", 40, "grid height in cells")
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pflag.IntVarP(&game.Cellsize, "cellsize", "c", 8, "cell size in pixels")
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pflag.IntVarP(&game.Density, "density", "D", 10, "density of random cells")
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pflag.IntVarP(&game.TPG, "ticks-per-generation", "t", 10,
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"game speed: the higher the slower (default: 10)")
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pflag.StringVarP(&rule, "rule", "r", "B3/S23", "game rule")
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pflag.StringVarP(&rlefile, "rle-file", "f", "", "RLE pattern file")
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pflag.StringVarP(&game.Statefile, "load-state-file", "l", "", "game state file")
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pflag.BoolVarP(&showversion, "version", "v", false, "show version")
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pflag.BoolVarP(&game.Paused, "paused", "p", false, "do not start simulation (use space to start)")
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pflag.BoolVarP(&game.Debug, "debug", "d", false, "show debug info")
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pflag.BoolVarP(&game.NoGrid, "nogrid", "n", false, "do not draw grid lines")
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pflag.BoolVarP(&game.Empty, "empty", "e", false, "start with an empty screen")
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pflag.BoolVarP(&game.Invert, "invert", "i", false, "invert colors (dead cell: black)")
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pflag.BoolVarP(&game.ShowEvolution, "show-evolution", "s", false, "show evolution tracks")
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pflag.Parse()
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if showversion {
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fmt.Printf("This is golsky version %s\n", VERSION)
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os.Exit(0)
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}
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// check if we have been given an RLE file to load
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game.RLE = GetRLE(rlefile)
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if game.RLE != nil {
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if game.RLE.Width > game.Width || game.RLE.Height > game.Height {
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game.Width = game.RLE.Width * 2
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game.Height = game.RLE.Height * 2
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fmt.Printf("rlew: %d, rleh: %d, w: %d, h: %d\n",
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game.RLE.Width, game.RLE.Height, game.Width, game.Height)
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}
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// RLE needs an empty grid
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game.Empty = true
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// it may come with its own rule
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if game.RLE.Rule != "" {
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game.Rule = ParseGameRule(game.RLE.Rule)
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}
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}
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// load rule from commandline when no rule came from RLE file,
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// default is B3/S23, aka conways game of life
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if game.Rule == nil {
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game.Rule = ParseGameRule(rule)
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}
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// bootstrap the game
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game.Init()
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// setup environment
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ebiten.SetWindowSize(game.ScreenWidth, game.ScreenHeight)
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ebiten.SetWindowTitle("Game of life")
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ebiten.SetWindowResizingMode(ebiten.WindowResizingModeEnabled)
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// main loop
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if err := ebiten.RunGame(game); err != nil {
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log.Fatal(err)
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}
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}
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