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godot-demo-projects/2d/dynamic_tilemap_layers/level/tile_map.gd
2025-10-11 05:03:59 -07:00

52 lines
1.1 KiB
GDScript

extends TileMapLayer
# You can have multiple layers if you make this an array.
var player_in_secret: bool = false
var layer_alpha := 1.0
func _ready() -> void:
set_process(false)
func _process(delta: float) -> void:
if player_in_secret:
if layer_alpha > 0.3:
# Animate the layer transparency.
layer_alpha = move_toward(layer_alpha, 0.3, delta)
self_modulate = Color(1, 1, 1, layer_alpha)
else:
set_process(false)
else:
if layer_alpha < 1.0:
layer_alpha = move_toward(layer_alpha, 1.0, delta)
self_modulate = Color(1, 1, 1, layer_alpha)
else:
set_process(false)
func _use_tile_data_runtime_update(_coords: Vector2i) -> bool:
return true
func _tile_data_runtime_update(_coords: Vector2i, tile_data: TileData) -> void:
# Remove collision for secret layer.
tile_data.set_collision_polygons_count(0, 0)
func _on_secret_detector_body_entered(body: Node2D) -> void:
if body is not CharacterBody2D:
# Detect the player only.
return
player_in_secret = true
set_process(true)
func _on_secret_detector_body_exited(body: Node2D) -> void:
if body is not CharacterBody2D:
return
player_in_secret = false
set_process(true)