extends Object
class_name RoomImageLoader

signal finishedLoading
signal finishedGettingDoors

func loadRoomData(image: Image) -> Array[Array]:
	var imageSize: Vector2i = image.get_size()
	var returnArray: Array[Array]
	
	for x in imageSize.x:
		var yArray: Array[GridCell]
		returnArray.push_back(yArray)
		for y in imageSize.y:
			var gridCell: GridCell = GridCell.new()
			var pixel: Color = image.get_pixel(x,y)
			gridCell.spaceTaken = isColorTakingSpace(pixel)
			if pixel == Color(1,0,0,1): 
				gridCell.door = true
				gridCell.doorOrientation = getDoorOrientation(image,Vector2i(x,y))
			
			yArray.push_back(gridCell)
	
	finishedLoading.emit()
	return returnArray

func isColorTakingSpace(pixel: Color) -> bool:
	var returnBool: bool = true
	if pixel == Color(1,1,1,1) or pixel == Color(1,0,0,1):
		returnBool = false
	return returnBool

func getDoors(grid: Array[Array]) -> Array[DoorPosition]:
	var returnArray: Array[DoorPosition]
	for x in grid.size():
		for y in grid[x].size():
			if grid[x][y].door:
				var newDoorPos := DoorPosition.new()
				newDoorPos.pos = Vector2i(x,y)
				newDoorPos.orientation = grid[x][y].doorOrientation
				returnArray.push_back(newDoorPos)
	finishedGettingDoors.emit()
	return returnArray

func getDoorOrientation(image: Image,pos: Vector2i) -> int:
	if image.get_pixelv(pos + Vector2i(0,1)) == Color(0,0,1,1): return GridCell.doorOrientations.north
	if image.get_pixelv(pos + Vector2i(-1,0)) == Color(0,0,1,1): return GridCell.doorOrientations.east
	if image.get_pixelv(pos + Vector2i(0,-1)) == Color(0,0,1,1): return GridCell.doorOrientations.south
	if image.get_pixelv(pos + Vector2i(1,0)) == Color(0,0,1,1): return GridCell.doorOrientations.west
	return 0