extends Camera2D


@export var limit_tile_map: TileMapLayer


func _ready() -> void:
	if limit_tile_map:
		var tile_size := limit_tile_map.tile_set.tile_size
		
		limit_top = limit_tile_map.get_used_rect().position.y * tile_size.y
		limit_bottom = limit_tile_map.get_used_rect().end.y * tile_size.y
		limit_left = limit_tile_map.get_used_rect().position.x * tile_size.x
		limit_right = limit_tile_map.get_used_rect().end.x * tile_size.x
		
		var difference := Vector2i(get_viewport_rect().size) - limit_tile_map.get_used_rect().size * tile_size
		if difference.x > 0:
			limit_left -= int(difference.x * 0.5)
			limit_right += int(difference.x * 0.5)
		if difference.y > 0:
			limit_top -= int(difference.x * 0.5)
			limit_bottom += int(difference.x * 0.5)