Initial commit

mazegeneration/2D/tile_map_layer_maze.gd

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+@tool
+extends TileMapLayer
+
+# ---------------------
+# Definir les variables
+# ---------------------
+
+# largeur, longeur du labyrinte
+@export var WIDTH : int
+@export var HEIGHT : int
+
+# Les boutons
+@export_tool_button("Init") var init_action = init_maze
+@export_tool_button("Step") var step_action = generate_maze_step
+@export_tool_button("All") var all_action = generate_map_all
+@export_tool_button("All with wait") var all_wait_action = generate_map_all_wait
+
+const TILE_FLOOR = Vector2i(0, 0)
+const TILE_WALL = Vector2i(1, 0)
+var current_pos = Vector2i(0, 0)
+
+var undo_stack : Array[Vector2i] = [current_pos] # Pile des positions explores, on depopera la pile pour le backtracking
+var explored : Dictionary[Vector2i, bool] # Stock les positions explores
+# Pas besoin d'init a false pour explored, contrairement python la valeur d'une cle pas dans le dico, est null. Qui est interprete comme false en gdscript
+
+# ---------------------
+# Fonctions utilitaires
+# ---------------------
+
+func set_tile(pos : Vector2i, val : Vector2i) -> void:
+	assert(pos.x >= 0 && pos.x < WIDTH, "x has bad value, x is {}, but should be beetwen 0 and {}".format([pos.x, WIDTH], "{}"))
+	assert(pos.y >= 0 && pos.y <  HEIGHT, "y has bad value, y is {}, but should be beetwen 0 and {}".format([pos.y, HEIGHT], "{}"))
+	set_cell(pos, 0, val)
+
+# Renvoie une direction possible depuis une position dans le labyrinte
+func get_random_possible_dir(current_pos : Vector2i):
+	var all_dir = [2*Vector2i.UP, 2*Vector2i.DOWN, 2*Vector2i.RIGHT, 2*Vector2i.LEFT]
+	var possible_dir = []
+	for dir in all_dir:
+		var next_pos = current_pos + dir
+		var can_be_explored = not explored.get(next_pos) \
+		&& next_pos.x >= 0 && next_pos.x < WIDTH && next_pos.y >= 0 && next_pos.y < HEIGHT
+		
+		if can_be_explored:
+			possible_dir.append(dir)
+	
+	if possible_dir.is_empty():
+		return null
+	
+	return possible_dir.pick_random()
+
+# Va dans la direction dir, pour agrandir le labyrinthe
+func path_move(dir : Vector2i) -> void:
+	var next_pos = current_pos + dir
+	var passway = current_pos + dir / 2
+	set_tile(passway, TILE_FLOOR)
+	set_tile(next_pos, TILE_FLOOR)
+	explored[next_pos] = true
+	undo_stack.append(next_pos)
+	current_pos = next_pos
+
+# Initialize le labyrinthe
+func init_maze() -> void:
+	print("init map")
+	current_pos = Vector2i(0, 0)
+	undo_stack = [current_pos]
+	explored = {}
+	clear() # fonction de TileMapLayer, clear les tiles
+	
+	current_pos = Vector2i(0, 0)
+	explored[current_pos] = true
+	for x in range(WIDTH):
+		for y in range(HEIGHT):
+			set_cell(Vector2i(x, y), 0, TILE_WALL) # fonction de TileMapLayer
+
+func _ready() -> void:
+	print("ready")
+	
+# ----------------------------------
+# Fonctions appeles par les boutons
+# ----------------------------------
+
+func generate_maze_step() -> void:
+	var next_dir = get_random_possible_dir(current_pos)
+	
+	# Si pas de voisins (next_dir est vide), alors on va en arriere
+	while not next_dir:
+		print("going back")
+		current_pos = undo_stack.pop_back()
+		next_dir = get_random_possible_dir(current_pos)
+			
+	print("path move")
+	path_move(next_dir)
+
+func generate_map_all() -> void:
+	while not undo_stack.is_empty():
+		generate_maze_step()
+		
+func generate_map_all_wait() -> void:
+	while not undo_stack.is_empty():
+		generate_maze_step()
+		await get_tree().create_timer(0.01).timeout

mazegeneration/2D/tile_map_layer_maze.gd.uid

@@ -0,0 +1 @@
+uid://2fw281l5o16y

mazegeneration/2D/tileset.png.import

@@ -0,0 +1,34 @@
+[remap]
+
+importer="texture"
+type="CompressedTexture2D"
+uid="uid://hwfveek70gga"
+path="res://.godot/imported/tileset.png-d096f978b03dd56545ecbab3756af876.ctex"
+metadata={
+"vram_texture": false
+}
+
+[deps]
+
+source_file="res://mazegeneration/2D/tileset.png"
+dest_files=["res://.godot/imported/tileset.png-d096f978b03dd56545ecbab3756af876.ctex"]
+
+[params]
+
+compress/mode=0
+compress/high_quality=false
+compress/lossy_quality=0.7
+compress/hdr_compression=1
+compress/normal_map=0
+compress/channel_pack=0
+mipmaps/generate=false
+mipmaps/limit=-1
+roughness/mode=0
+roughness/src_normal=""
+process/fix_alpha_border=true
+process/premult_alpha=false
+process/normal_map_invert_y=false
+process/hdr_as_srgb=false
+process/hdr_clamp_exposure=false
+process/size_limit=0
+detect_3d/compress_to=1