52 lines
1.9 KiB
GDScript
52 lines
1.9 KiB
GDScript
tool
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extends TileMap
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# todo: Give care about descriptor swaps being loseless / non introducing artifacts.
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## Dictates whether tileset collision information should be exposed to game context.
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export var expose_collisions: bool = true
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var _descriptor_name_to_id: Dictionary # String to int
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func change_tile_texture(p_tile: String, p_texture: Texture) -> void:
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if not p_tile in _descriptor_name_to_id:
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push_error("Invalid tile name")
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return
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var id := _descriptor_name_to_id[p_tile] as int
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tile_set.tile_set_texture(id, p_texture)
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func _enter_tree() -> void:
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tile_set = TileSet.new()
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# It's okay to fail here for non-grid contexts.
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if get_parent().connect("cell_size_changed", self, "_update_cell_size"):
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_update_cell_size(get_parent().cell_size, get_parent().cell_size)
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if connect("child_entered_tree", self, "_on_child_entered_tree") != OK:
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assert(false)
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if connect("child_exiting_tree", self, "_on_child_exiting_tree") != OK:
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assert(false)
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func _update_cell_size(_p_old_cell_size: Vector2, p_new_cell_size: Vector2) -> void:
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# We're assuming that all tile textures are of same dimensions.
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# todo: Diagnose mismatch by walking over all textures?
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var tileset_texture_size := tile_set.tile_get_texture(0).get_size()
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scale = p_new_cell_size / tileset_texture_size
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cell_size = p_new_cell_size / scale
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func _on_child_entered_tree(p_node: Node) -> void:
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var id := tile_set.get_last_unused_tile_id()
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_descriptor_name_to_id[p_node.name] = id
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tile_set.create_tile(id)
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tile_set.tile_set_texture(id, p_node.texture)
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func _on_child_exiting_tree(p_node: Node) -> void:
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var id := _descriptor_name_to_id[p_node.name] as int
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for cell in get_used_cells_by_id(id):
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set_cell(cell.x, cell.y, -1)
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tile_set.remove_tile(id)
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if not _descriptor_name_to_id.erase(p_node.name):
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assert(false)
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