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Obstacle walls #88

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Oct 11, 2024
Merged

Obstacle walls #88

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59 changes: 34 additions & 25 deletions addons/nezvers_library/nodes/Navigation/TileNavigationBlocking.gd
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Original file line number Diff line number Diff line change
Expand Up @@ -12,60 +12,69 @@ extends Node
## TODO: use data in tile_set for navigation weight informtion

var collider_rid_list:Array[RID]
var tile_data_names:Array[String]
var _tiles:Array[Vector2i]

func _ready()-> void:
assert(astargrid_resource != null)
astargrid_resource.updated.connect(setup_obstacles)
setup_obstacles()
tree_exiting.connect(cleanup, CONNECT_ONE_SHOT)
tree_exiting.connect(cleanup)
astargrid_resource.cleanup_event.connect(cleanup)


func setup_obstacles()->void:
if astargrid_resource.value == null:
return
print("Collision layer: ", collision_layer)
var _tilemap_rect:Rect2i = tilemap_layer.get_used_rect()
var _astar_rect:Rect2i = astargrid_resource.value.region
var _astar:AStarGrid2D = astargrid_resource.value

# Left side
if _tilemap_rect.position.x < _astar_rect.position.x:
_astar.region.position.x = _tilemap_rect.position.x
# Top side
if _tilemap_rect.position.y < _astar_rect.position.y:
_astar.region.position.y = _tilemap_rect.position.y
# Right side
if _tilemap_rect.position.x + _tilemap_rect.size.x > _astar_rect.position.x + _astar_rect.size.x:
_astar.region.size.x = _tilemap_rect.position.x + _tilemap_rect.size.x - _astar_rect.position.x
# Bottom side
if _tilemap_rect.position.y + _tilemap_rect.size.y > _astar_rect.position.y + _astar_rect.size.y:
_astar.region.size.y = _tilemap_rect.position.y + _tilemap_rect.size.y - _astar_rect.position.y
# Cache custom data names to later check if exist
var _tile_data_count:int = tilemap_layer.tile_set.get_custom_data_layers_count()
tile_data_names.resize(_tile_data_count)
for i:int in _tile_data_count:
tile_data_names[i] = tilemap_layer.tile_set.get_custom_data_layer_name(i)
var _has_offset:bool = tile_data_names.has("obstacle_offset")

var _tiles:Array[Vector2i] = tilemap_layer.get_used_cells()
collider_rid_list.resize(_tiles.size())
_tiles = tilemap_layer.get_used_cells()
var _space:RID = tilemap_layer.get_world_2d().space
var _id:int = get_instance_id()
var _body_mode:PhysicsServer2D.BodyMode = PhysicsServer2D.BODY_MODE_KINEMATIC

for i:int in _tiles.size():
var _tile_pos:Vector2i = _tiles[i]
_astar.set_point_solid(_tile_pos, true)
var _tile_data:TileData = tilemap_layer.get_cell_tile_data(_tile_pos)
var _offset_list:PackedVector2Array
if _has_offset:
_offset_list = _tile_data.get_custom_data("obstacle_offset")
else:
_offset_list = PackedVector2Array([Vector2.ZERO])

# TODO: create a collider
var _pos:Vector2 = tilemap_layer.map_to_local(_tile_pos)
var _transform:Transform2D = Transform2D(0.0, _pos)
var _body_rid:RID = PhysicsHelper.body_create_2d(_space, collision_layer, collision_mask, obstacle_shape, _transform, _body_mode, _id)
collider_rid_list[i] = _body_rid
for _offset:Vector2 in _offset_list:
var _tile_pos_off:Vector2i = _tile_pos + Vector2i(_offset)
print("Offsets: ", _tile_pos_off)

assert(_astar.region.has_point(_tile_pos_off))
_astar.set_point_solid(_tile_pos_off, true)
var _pos:Vector2 = tilemap_layer.map_to_local(_tile_pos_off)
var _transform:Transform2D = Transform2D(0.0, _pos)
var _body_rid:RID = PhysicsHelper.body_create_2d(_space, collision_layer, collision_mask, obstacle_shape, _transform, _body_mode, _id)
collider_rid_list.append(_body_rid)
_astar.update()


## Free obstacles from AstarGrid & PhysicsServer
func cleanup() -> void:
for _body_rid:RID in collider_rid_list:
PhysicsServer2D.free_rid(_body_rid)
collider_rid_list.clear()

if astargrid_resource.value == null:
return
var _tiles:Array[Vector2i] = tilemap_layer.get_used_cells()

for i:int in _tiles.size():
var _tile_pos:Vector2i = _tiles[i]
astargrid_resource.value.set_point_solid(_tile_pos, false)

for _body_rid:RID in collider_rid_list:
PhysicsServer2D.free_rid(_body_rid)
_tiles.clear()
13 changes: 9 additions & 4 deletions addons/nezvers_library/nodes/Navigation/TileNavigationSetter.gd
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Original file line number Diff line number Diff line change
Expand Up @@ -3,7 +3,8 @@ extends Node

@export var tilemap_layer:TileMapLayer
@export var astargrid_resource:AstarGridResource

## set bigger AStar region on each side
@export var grow_region:int = 1

func _ready()->void:
assert(tilemap_layer != null)
Expand All @@ -18,11 +19,15 @@ func initialize_astargrid()->void:

astargrid_resource.tilemap_layer = tilemap_layer

var _tile_rect:Rect2i = tilemap_layer.get_used_rect()
_tile_rect = _tile_rect.grow(grow_region)
print("Tile region: ", _tile_rect)

var _astar:AStarGrid2D = AStarGrid2D.new()
_astar.region = tilemap_layer.get_used_rect()
_astar.region = _tile_rect
var _tileset:TileSet = tilemap_layer.tile_set
_astar.cell_size = _tileset.tile_size
_astar.offset = Vector2.ZERO#_tileset.tile_size * 0.5
_astar.offset = Vector2.ZERO

if _tileset.tile_shape == TileSet.TileShape.TILE_SHAPE_SQUARE:
_astar.cell_shape = AStarGrid2D.CellShape.CELL_SHAPE_SQUARE
Expand All @@ -32,5 +37,5 @@ func initialize_astargrid()->void:
if _tileset.tile_layout == TileSet.TileLayout.TILE_LAYOUT_DIAMOND_DOWN:
_astar.cell_shape = AStarGrid2D.CellShape.CELL_SHAPE_ISOMETRIC_DOWN

_astar.update()
astargrid_resource.set_value(_astar)
tree_exiting.connect(astargrid_resource.cleanup)
16 changes: 12 additions & 4 deletions addons/nezvers_library/resources/ValueResource/AstarGridResource.gd
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Original file line number Diff line number Diff line change
@@ -1,6 +1,8 @@
class_name AstarGridResource
extends ValueResource

signal cleanup_event

@export var default_compute_heuristic:AStarGrid2D.Heuristic
@export var default_estimate_heuristic:AStarGrid2D.Heuristic
@export var diagonal_mode:AStarGrid2D.DiagonalMode
Expand All @@ -12,8 +14,14 @@ var tilemap_layer:TileMapLayer
func set_value(_value:AStarGrid2D)->void:
value = _value
if value != null:
default_compute_heuristic = default_compute_heuristic
default_estimate_heuristic = default_estimate_heuristic
diagonal_mode = diagonal_mode
jumping_enabled = jumping_enabled
value.default_compute_heuristic = default_compute_heuristic
value.default_estimate_heuristic = default_estimate_heuristic
value.diagonal_mode = diagonal_mode
value.jumping_enabled = jumping_enabled
value.update()
updated.emit()

func cleanup()->void:
value = null
tilemap_layer = null
cleanup_event.emit()
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