Implement simple worldgen

scripts/v2/worldgen/standard/room.gd

@@ -1,19 +1,82 @@
 class_name StandardRoom
 extends TileMap
 
+const TILEMAP_LAYER = 0
+
 @export_category("Room Openings")
 @export var left: bool = false
 @export var right: bool = false
 @export var top: bool = false
 @export var bottom: bool = false
 
-
 @onready
 var room_size: Vector2i = self.get_used_rect().size
 @onready
 var cell_size: Vector2i = self.tile_set.tile_size
 
+
 func is_block() -> bool:
 	if self.left or self.right or self.top or self.bottom:
 		return false
 	return true
+
+func get_exits() -> Array[Vector2i]:
+	var exits: Array[Vector2i] = []
+	if self.left:
+		exits.append(Vector2i.LEFT)
+	if self.right:
+		exits.append(Vector2i.RIGHT)
+	if self.top:
+		exits.append(Vector2i.UP)
+	if self.bottom:
+		exits.append(Vector2i.DOWN)
+	return exits
+
+func get_exit_pos(exit: Vector2i) -> Vector2i:
+	var pos: Vector2i = Vector2i.ZERO
+	if exit == Vector2i.LEFT:
+		pos = Vector2i(0, self.room_size.y / 2)
+	elif exit == Vector2i.RIGHT:
+		pos = Vector2i(self.room_size.x - 1, self.room_size.y / 2)
+	elif exit == Vector2i.UP:
+		pos = Vector2i(self.room_size.x / 2, 0)
+	elif exit == Vector2i.DOWN:
+		pos = Vector2i(self.room_size.x / 2, self.room_size.y - 1)
+	return pos
+
+func copy_to_map(map: TileMap, pos: Vector2i) -> void:
+	for x in range(self.room_size.x):
+		for y in range(self.room_size.y):
+			var tile = self.get_cell_source_id(TILEMAP_LAYER, Vector2i(x, y))
+			if tile.tile_set:
+				map.set_cell(TILEMAP_LAYER, Vector2i(pos.x + x, pos.y + y), tile.tile_id)
+			else:
+				map.set_cell(TILEMAP_LAYER, Vector2i(pos.x + x, pos.y + y), -1)
+
+# Validate room by checking that the top left tile is at 0, 0 and all exits are valid
+func _validate() -> bool:
+
+	# Check of tiles where x is negative
+	pass
+	
+	# Check for tiles where y is negative
+	pass
+	
+	# If exit on left, check that the middle tile on the left is empty
+	if self.left and self.get_cell_source_id(TILEMAP_LAYER, Vector2i(0, self.room_size.y / 2)) != -1:
+		push_error("Room with exit on left must have empty middle tile on left")
+		return false
+	# If exit on right, check that the middle tile on the right is empty
+	if self.right and self.get_cell_source_id(TILEMAP_LAYER, Vector2i(self.room_size.x - 1, self.room_size.y / 2)) != -1:
+		push_error("Room with exit on right must have empty middle tile on right")
+		return false
+	# If exit on top, check that the middle tile on the top is empty
+	if self.top and self.get_cell_source_id(TILEMAP_LAYER, Vector2i(self.room_size.x / 2, 0)) != -1:
+		push_error("Room with exit on top must have empty middle tile on top")
+		return false
+	# If exit on bottom, check that the middle tile on the bottom is empty
+	if self.bottom and self.get_cell_source_id(TILEMAP_LAYER, Vector2i(self.room_size.x / 2, self.room_size.y - 1)) != -1:
+		push_error("Room with exit on bottom must have empty middle tile on bottom")
+		return false
+	
+	return true