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class_name PathManager
extends Node
signal path_grid_changed
@export var map: TileMapLayer
@export var collision_maps: Array[TileMapLayer]
var path_grid: AStarGrid2D
var last_solid_set_points: Array[Vector2]
func _ready() -> void:
path_grid = AStarGrid2D.new()
path_grid.region = map.get_used_rect()
path_grid.cell_size = map.tile_set.tile_size
path_grid.offset = map.tile_set.tile_size / 2
path_grid.diagonal_mode = AStarGrid2D.DIAGONAL_MODE_AT_LEAST_ONE_WALKABLE
path_grid.update()
for m in collision_maps:
for cell in m.get_used_cells():
var tile_data = m.get_cell_tile_data(cell)
if tile_data.get_collision_polygons_count(0) > 0:
path_grid.set_point_solid(cell, true)
func fill_tower_region(tower: Tower, solid = true):
var region = tower.get_region().size.snapped(path_grid.cell_size)
var tower_position = map.local_to_map(tower.global_position)
last_solid_set_points = []
if solid:
for x in (region / path_grid.cell_size).x + 1:
for y in (region / path_grid.cell_size).y + 1:
last_solid_set_points.append(
map.map_to_local(tower_position + Vector2i(x, y))
)
path_grid.fill_solid_region(
Rect2i(
map.local_to_map(tower.global_position),
(region / path_grid.cell_size)
),
solid
)
path_grid_changed.emit()
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