fixed snap in bug, started with space themed sprites

TODO.md

@@ -1,22 +1,8 @@
 ## Levels:
 
-- Add shaders for animation (player destruction etc)
-
 - Start New game starts with last played level, better add a Resume
   Game menu item for this and use Start New always for level 1.
 
-- for finding caller:
-	pc := make([]uintptr, 10)
-	n := runtime.Callers(0, pc)
-	pc = pc[:n]
-	fs := runtime.CallersFrames(pc)
-	source, _ := fs.Next()
-	source, _ = fs.Next()
-	source, _ = fs.Next()
-
-	slog.Debug("get observer", "minmoves", observer.LevelScore,
-		"file", source.File, "line", source.Line)
-
 - Turn menu button in hud_system (events in level_scene!) into ebitenui button
 
 - Obstacle don't stop at collectibles
@@ -47,8 +33,6 @@
 - Add save to disk feature including settings and player
   accomplishements (FIXME: find the lib, asked in Discord)
 
-- Add coded animated background like in https://github.com/tinne26/bindless/tree/main/src/misc/background
-
 -  Rework sprites  (again!) to  match stellar  background: maybe  more
   technical tiles and items? Like some robotic setup?
   
@@ -56,10 +40,6 @@
   or south (NOT left or north!) it snaps in visibly, so a short wobble
   can be seen.
   
-- Rework animation system: since it is impossible to assign multiple
-  animation types to an entity via LDTK, hard code it in Tiles. Keep
-  implementation though. CAUTION: last time I changed this, the
-  collectible detonation didn't work anymore!
   
   
   
@@ -82,3 +62,17 @@
   Collider.IntersectResolve => func(newpos) {player.pos = newpos; player.vel = stop}
 - in the end it must be  possible to add new entities without the need
   to write a collision check for them, but have collision detection anyway!
+
+## Just in case stuff
+
+- for finding caller:
+	pc := make([]uintptr, 10)
+	n := runtime.Callers(0, pc)
+	pc = pc[:n]
+	fs := runtime.CallersFrames(pc)
+	source, _ := fs.Next()
+	source, _ = fs.Next()
+	source, _ = fs.Next()
+
+	slog.Debug("get observer", "minmoves", observer.LevelScore,
+		"file", source.File, "line", source.Line)

assets/space/space.pal

@@ -0,0 +1,42 @@
+JASC-PAL
+0100
+39
+32 0 59
+63 0 83
+108 0 108
+146 0 124
+187 0 151
+236 0 178
+255 19 186
+255 64 190
+255 113 213
+255 147 231
+255 186 253
+245 220 255
+255 255 255
+0 0 0
+12 12 12
+26 26 26
+39 39 39
+54 54 54
+71 71 71
+86 86 86
+99 99 99
+118 118 118
+133 133 133
+153 153 153
+177 177 177
+205 205 205
+42 2 0
+52 9 0
+71 24 0
+94 46 0
+131 71 0
+165 96 0
+201 106 0
+243 119 0
+255 165 41
+255 186 82
+255 239 169
+255 250 211
+255 255 247

components/position.go

@@ -115,3 +115,8 @@ func (tile *Position) Intersects(moving *Position, velocity *Velocity) (bool, *P
 
 	return false, nil
 }
+
+func (tile *Position) Intersecting(position *Position, velocity *Velocity) bool {
+	is := tile.Rect.Bounds().Intersect(position.Rect.Bounds())
+	return is != image.ZR
+}

grid/collider.go

@@ -3,6 +3,8 @@ package grid
 import (
 	"openquell/components"
 	. "openquell/config"
+
+	"log/slog"
 )
 
 // Check a collision  on the grid. We check if  the entity in question
@@ -24,8 +26,8 @@ func (grid *Grid) CheckGridCollision(
 		} else {
 			ok, tilepos := grid.GetSolidNeighborPosition(position, velocity, true)
 			if ok {
-				// slog.Debug("HaveSolidNeighbor", "ok", ok, "tilepos",
-				// 	tilepos.Point(), "playerpos", playerposition)
+				slog.Debug("(3) HaveSolidNeighbor", "tilepos",
+					tilepos.String(), "playpos", position.String())
 				intersects, newpos := tilepos.Intersects(position, velocity)
 				if intersects {
 					respond_solid(position, velocity, newpos)
@@ -44,6 +46,66 @@ func (grid *Grid) GetSolidNeighborPosition(
 		return false, nil
 	}
 
+	// set to true  if we are already on the last  tile in the current
+	// direction, i.e. on the edge of the grid
+	edge := true
+	moving := position.GetMoved(velocity)
+
+	neighborpos := position.Point()
+	if velocity.Direction == East || velocity.Direction == South {
+		// FIXES snapin  to down+right, but now top+left  fail. Only in
+		// these cases  we need to look at the  neighbor in the future
+		// position where we will be when we move forward. I don't
+		// know why it is like this, in fact it doesn't really make
+		// any sense. But it works, so I'll keep it that way for the
+		// moment.
+		neighborpos = moving.Point()
+	}
+
+	switch velocity.Direction {
+	case East:
+		if neighborpos.X < grid.TilesX {
+			neighborpos.X++
+			edge = false
+		}
+	case West:
+		if neighborpos.X > 0 {
+			neighborpos.X--
+			edge = false
+		}
+	case South:
+		if neighborpos.Y < grid.TilesY {
+			neighborpos.Y++
+			edge = false
+		}
+	case North:
+		if neighborpos.Y > 0 {
+			neighborpos.Y--
+			edge = false
+		}
+	}
+
+	newpos := components.NewPosition(neighborpos, grid.Tilesize)
+
+	slog.Debug("SolidNeighbor?", "player", position.Point(),
+		"neighbor", neighborpos, "edge", edge, "neighbor-solid",
+		grid.Map[neighborpos].Solid, "newpos", newpos.Point())
+	if !edge && grid.Map[neighborpos].Solid {
+		return true, newpos
+	}
+
+	return false, nil
+}
+
+func (grid *Grid) OrigGetSolidNeighborPosition(
+	position *components.Position,
+	velocity *components.Velocity,
+	solid bool) (bool, *components.Position) {
+
+	if !solid {
+		return false, nil
+	}
+
 	// set to true  if we are already on the last  tile in the current
 	// direction, i.e. on the edge of the grid
 	edge := true
@@ -74,9 +136,9 @@ func (grid *Grid) GetSolidNeighborPosition(
 
 	newpos := components.NewPosition(neighborpos, grid.Tilesize)
 
-	// slog.Debug("SolidNeighbor?", "player", position.Point(),
-	// 	"neighbor", neighborpos, "edge", edge, "neighbor-solid",
-	// 	grid.Map[neighborpos].Solid, "newpos", newpos.Point())
+	slog.Debug("SolidNeighbor?", "player", position.Point(),
+		"neighbor", neighborpos, "edge", edge, "neighbor-solid",
+		grid.Map[neighborpos].Solid, "newpos", newpos.Point())
 	if !edge && grid.Map[neighborpos].Solid {
 		return true, newpos
 	}

systems/player_system.go

@@ -1,6 +1,7 @@
 package systems
 
 import (
+	"fmt"
 	"log/slog"
 	"openquell/components"
 	. "openquell/components"
@@ -9,6 +10,7 @@ import (
 	"openquell/observers"
 
 	"github.com/hajimehoshi/ebiten/v2"
+	"github.com/hajimehoshi/ebiten/v2/ebitenutil"
 	"github.com/hajimehoshi/ebiten/v2/inpututil"
 	"github.com/mlange-42/arche/ecs"
 	"github.com/mlange-42/arche/generic"
@@ -46,6 +48,7 @@ func PlayerBumpWallResponder(
 	vel *components.Velocity,
 	newpos *components.Position) {
 
+	slog.Debug("(2) PlayerBumpWallResponder", "old", pos.String(), "new", newpos.String())
 	pos.Set(newpos)
 	vel.Change(Stop)
 }
@@ -67,12 +70,16 @@ func (system PlayerSystem) Update() error {
 			continue
 		}
 
-		// check if the user alters or initiates movement
+		//  check  if the  user  alters  or initiates  movement,  only
+		// changes player direction
 		system.CheckMovement(playerposition, velocity, player)
 
 		// check if player collides with walls or edges
-		system.GridContainer.Grid.CheckGridCollision(
-			playerposition, velocity, PlayerBumpEdgeResponder, PlayerBumpWallResponder)
+		if velocity.Moving() {
+			slog.Debug("(2) checking grid collision")
+			system.GridContainer.Grid.CheckGridCollision(
+				playerposition, velocity, PlayerBumpEdgeResponder, PlayerBumpWallResponder)
+		}
 
 		if count > 1 {
 			// check if player collides with another player, fuse them if any
@@ -99,7 +106,11 @@ func (system PlayerSystem) Update() error {
 	query = system.Selector.Query(system.World)
 	for query.Next() {
 		playerposition, velocity, _, _ := query.Get()
-		playerposition.Move(velocity)
+		oldpos := playerposition.String()
+		if velocity.Moving() {
+			playerposition.Move(velocity)
+			slog.Debug("(4) moving player", "old", oldpos, "new", playerposition.String())
+		}
 	}
 
 	// we may have lost players, remove them here
@@ -124,6 +135,8 @@ func (system *PlayerSystem) Draw(screen *ebiten.Image) {
 		op.GeoM.Translate(float64(pos.X), float64(pos.Y))
 
 		screen.DrawImage(sprite.Image, op)
+
+		ebitenutil.DebugPrintAt(screen, pos.String(), pos.X, pos.Y) // print player pos
 	}
 }
 
@@ -196,6 +209,9 @@ func (system *PlayerSystem) CheckMovement(
 			player.LoopCount = 0
 			observer.AddMove()
 		}
+	} else {
+		fmt.Println("------------------------")
+		slog.Debug("(1) player is at", "current", position.String())
 	}
 }