feat: hexagonal ant

langtons-ant/TODO

@@ -1,2 +0,0 @@
-Ant navigation is wonky -> check if next_dir behaves as expected.
-ant sprite does not budge from centre of screen no matter what i try -> fix that

langtons-ant/ant.gd

@@ -1,60 +1,72 @@
 extends Sprite2D
 
 var pos: Vector2i = Vector2i(0,0)
-var dir: TileSet.CellNeighbor = TileSet.CELL_NEIGHBOR_TOP_RIGHT_SIDE
+var dir: TileSet.CellNeighbor = TileSet.CELL_NEIGHBOR_RIGHT_SIDE
-@onready var tiles: TileMapLayer = get_node("TileMapLayer")
+@onready var tiles: TileMapLayer = get_node("../TileMapLayer")
 
 var next_dir: Dictionary = {
 	0: TileSet.CELL_NEIGHBOR_RIGHT_SIDE,
 	1: TileSet.CELL_NEIGHBOR_BOTTOM_RIGHT_SIDE,
 	2: TileSet.CELL_NEIGHBOR_BOTTOM_LEFT_SIDE,
-	3: TileSet.CELL_NEIGHBOR_TOP_LEFT_SIDE,
+	3: TileSet.CELL_NEIGHBOR_LEFT_SIDE,
-	4: TileSet.CELL_NEIGHBOR_TOP_RIGHT_SIDE,
+	4: TileSet.CELL_NEIGHBOR_TOP_LEFT_SIDE,
+	5: TileSet.CELL_NEIGHBOR_TOP_RIGHT_SIDE,
 }
 	
-var next_int: Dictionary = {
+var cur_int: Dictionary = {
-	TileSet.CELL_NEIGHBOR_RIGHT_SIDE: 1,
+	TileSet.CELL_NEIGHBOR_RIGHT_SIDE: 0,
-	TileSet.CELL_NEIGHBOR_BOTTOM_RIGHT_SIDE: 2,
+	TileSet.CELL_NEIGHBOR_BOTTOM_RIGHT_SIDE: 1,
-	TileSet.CELL_NEIGHBOR_BOTTOM_LEFT_SIDE: 3,
+	TileSet.CELL_NEIGHBOR_BOTTOM_LEFT_SIDE: 2,
-	TileSet.CELL_NEIGHBOR_TOP_LEFT_SIDE: 4,
+	TileSet.CELL_NEIGHBOR_TOP_LEFT_SIDE: 3,
-	TileSet.CELL_NEIGHBOR_TOP_RIGHT_SIDE: 0,
+	TileSet.CELL_NEIGHBOR_LEFT_SIDE: 4,
+	TileSet.CELL_NEIGHBOR_TOP_RIGHT_SIDE: 5,
 }
 
 func _ready() -> void:
 	set_frame(1)
+	set_z_index(1)
+	tiles.set_tile(pos, (tiles.get_tile_colour(pos) + 1) % 2) # TODO: should probably use another dictionary
+	move()
 
 func update() -> void:
 	var tile: int = tiles.get_tile_colour(pos)
 	print("tile %s" % tile)
-	var newFrame: int = next_int[dir]
+	var newFrame: int = cur_int[dir]
 	
-	if tile == 0:
+	match tile:
-		newFrame = (newFrame + 1) % 5
+		0:
-		dir = next_dir[newFrame]
+			newFrame = (newFrame + 1) % 6
-	else:
+		1:
-		newFrame = (newFrame) % 5
+			newFrame = (newFrame + 1) % 6
-		dir = next_dir[newFrame]
+		2:
+			newFrame = (newFrame + 1) % 6
+		3:
+			newFrame = (newFrame + 5) % 6
+		_:
+			pass
+	dir = next_dir[newFrame]
 		
-	#var tmpPos: Vector2i
+	move()
-	#for i in range(0, 16):
-		#tmpPos = tiles.get_neighbor_cell(pos, i)
-		#print("%s: (%d %d)" % [i, tmpPos.x, tmpPos.y])
-		
-	print("(%d %d)" % [pos.x, pos.y])
 	pos = tiles.get_neighbor_cell(pos, dir)
 	tile = tiles.get_tile_colour(pos)
-	print("(%d %d)" % [pos.x, pos.y])
+	tiles.set_tile(pos, (tile + 1) % 4) # TODO: should probably use another dictionary
-	tiles.set_tile(pos, (tile + 1) % 2) # TODO: should probably use another dictionary
 	set_frame(newFrame)
 	
-func _physics_process(delta: float) -> void:
+func move() -> void:
-	var vel: Vector2 = Vector2(0,0)
+	var delta: Vector2
 	match dir:
-		TileSet.CELL_NEIGHBOR_TOP_RIGHT_SIDE:
-			vel = Vector2(1,1)
 		TileSet.CELL_NEIGHBOR_RIGHT_SIDE:
-			vel = Vector2(1,0)
+			delta = Vector2(32, 0)
+		TileSet.CELL_NEIGHBOR_BOTTOM_RIGHT_SIDE:
+			delta = Vector2(16, 24)
+		TileSet.CELL_NEIGHBOR_BOTTOM_LEFT_SIDE:
+			delta = Vector2(-16, 24)
+		TileSet.CELL_NEIGHBOR_LEFT_SIDE:
+			delta = Vector2(-32, 0)
+		TileSet.CELL_NEIGHBOR_TOP_LEFT_SIDE:
+			delta = Vector2(-16, -24)
+		TileSet.CELL_NEIGHBOR_TOP_RIGHT_SIDE:
+			delta = Vector2(16, -24)
 		_:
-			vel = Vector2(0,-1)
+			delta = Vector2(0,0)
-	vel = vel.normalized() * 16
+	translate(delta)
-	global_position += vel * delta

langtons-ant/grid.gd

@@ -16,3 +16,4 @@ func _process(delta: float) -> void:
 	if (t > 60-speed):
 		t = 0
 		ant.update()
+		#tiles.render_next()

langtons-ant/grid.tscn

@@ -27,17 +27,20 @@ sources/0 = SubResource("TileSetAtlasSource_g2qvd")
 script = ExtResource("1_bghhw")
 speed = 60.0
 ant = NodePath("ant")
-tiles = NodePath("ant/TileMapLayer")
+tiles = NodePath("TileMapLayer")
 
-[node name="ant" type="Sprite2D" parent="."]
+[node name="TileMapLayer" type="TileMapLayer" parent="."]
-texture = ExtResource("3_sle3t")
-vframes = 6
-script = ExtResource("1_ebq2e")
-
-[node name="Camera2D" type="Camera2D" parent="ant"]
-
-[node name="TileMapLayer" type="TileMapLayer" parent="ant"]
-position = Vector2(-74, -8)
 tile_set = SubResource("TileSet_05i0m")
 collision_enabled = false
 script = ExtResource("5_fqc2p")
+
+[node name="Camera2D" type="Camera2D" parent="TileMapLayer"]
+position = Vector2(0, -8)
+scale = Vector2(0.8, 0.8)
+
+[node name="ant" type="Sprite2D" parent="."]
+position = Vector2(-15.999998, 14.999998)
+scale = Vector2(0.8, 0.8)
+texture = ExtResource("3_sle3t")
+vframes = 6
+script = ExtResource("1_ebq2e")

langtons-ant/tile_map_layer.gd

@@ -1,6 +1,20 @@
 extends TileMapLayer
 
 var tiles: Dictionary = {}
+var idx: int = 0
+var dirs: Array[int] = [
+	TileSet.CELL_NEIGHBOR_TOP_RIGHT_SIDE,
+	TileSet.CELL_NEIGHBOR_RIGHT_SIDE,
+	TileSet.CELL_NEIGHBOR_BOTTOM_RIGHT_SIDE,
+	TileSet.CELL_NEIGHBOR_BOTTOM_LEFT_SIDE,
+	TileSet.CELL_NEIGHBOR_LEFT_SIDE,
+	TileSet.CELL_NEIGHBOR_TOP_LEFT_SIDE,
+]
+
+func render_next() -> void:
+	print("rendering {i}")
+	set_cell(get_neighbor_cell(Vector2i(0, 0), dirs[idx]), 0, Vector2i(0, 1))
+	idx = (idx + 1) % 6
 
 func get_tile_colour(pos: Vector2i) -> int:
 	return tiles.get_or_add(pos, 0)