mirror of
https://gitee.com/freeyz/godot-mota.git
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62 lines
1.7 KiB
GDScript
62 lines
1.7 KiB
GDScript
tool
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extends TileMap
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class_name NavigationTileMap
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var astar : AStar2D = AStar2D.new()
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# 遮挡物
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export(NodePath) var collsion_tilemap_path : NodePath
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# 初始化tilemap配置
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func _init():
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self.tile_set = load("res://images/mota_tileset.tres")
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self.cell_size = Vector2(32,32)
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# 初始化node和edge
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func _ready():
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var cells := get_cells()
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init_nodes(cells)
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init_edges(cells)
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# 初始化nodes
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func init_nodes(cells:Array):
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for index in range(cells.size()):
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var cell_position = cells[index] * cell_size
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cell_position.x += 16
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cell_position.y += 16
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astar.add_point(index, cell_position)
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# 初始化edge
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func init_edges(cells:Array):
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for index in range(cells.size()):
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var cell = cells[index]
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#left
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var left_cell_index = cells.find(Vector2(cell.x - 1,cell.y))
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if left_cell_index != -1:
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astar.connect_points(index,left_cell_index)
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#right
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var right_cell_index = cells.find(Vector2(cell.x + 1,cell.y))
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if right_cell_index != -1:
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astar.connect_points(index,right_cell_index)
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#up
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var up_cell_index = cells.find(Vector2(cell.x,cell.y - 1))
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if up_cell_index != -1:
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astar.connect_points(index,up_cell_index)
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#down
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var down_cell_index = cells.find(Vector2(cell.x,cell.y + 1))
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if down_cell_index != -1:
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astar.connect_points(index,down_cell_index)
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# 返回显示的道路需要去除被遮挡的道路
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func get_cells() -> Array:
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var cells = get_used_cells()
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if not collsion_tilemap_path.is_empty():
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var collsion_tilemap = get_node(collsion_tilemap_path) as TileMap
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var collsion_cells = collsion_tilemap.get_used_cells()
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for collsion_cell in collsion_cells:
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var index = cells.find(collsion_cell)
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if index != -1:
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cells.remove(index)
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return cells
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