extends SceneTree
# Real native scene/physics acceptance; this is not a JavaScript engine adapter.
var checks: Array[String] = []
var failures: Array[String] = []
func verify(label: String, condition: bool):
	checks.append(label)
	if not condition:
		failures.append(label)
		push_error(label)
func _initialize():
	call_deferred("run_checks")
func run_checks():
	verify("Exact Godot4.7.2 native version",Engine.get_version_info().major == 4 and Engine.get_version_info().minor == 7 and Engine.get_version_info().patch == 2 and Engine.get_version_info().status == "stable")
	var packed = load("res://main.tscn") as PackedScene
	verify("Native packed main scene loads",packed != null)
	if packed == null: quit(1); return
	var main = packed.instantiate()
	root.add_child(main)
	main.set_physics_process(false)
	await physics_frame
	await physics_frame
	var tilemap = main.get_node("Room/TileMap")
	verify("Builtin exporter TileMap class",tilemap is TileMap)
	verify("Two exported tile layers",tilemap.get_layers_count() == 2)
	verify("Floor and Walls preserve names",tilemap.get_layer_name(0) == "Floor" and tilemap.get_layer_name(1) == "Walls")
	verify("32px tile dimensions",tilemap.tile_set.tile_size == Vector2i(32,32))
	verify("60 floor cells and28 wall cells",tilemap.get_used_cells(0).size() == 60 and tilemap.get_used_cells(1).size() == 28)
	var ids_correct = true
	for y in range(6):
		for x in range(10):
			var cell = Vector2i(x,y)
			ids_correct = ids_correct and tilemap.get_cell_atlas_coords(0,cell) == Vector2i.ZERO
			var wall = x == 0 or x == 9 or y == 0 or y == 5
			ids_correct = ids_correct and (tilemap.get_cell_atlas_coords(1,cell) == Vector2i(1,0) if wall else tilemap.get_cell_source_id(1,cell) == -1)
	verify("All60 floor and wall atlas positions",ids_correct)
	verify("Original PNG texture resolves",tilemap.tile_set.get_source(0).texture.get_size() == Vector2(64,32))
	verify("Wall physics layer1",tilemap.tile_set.get_physics_layer_collision_layer(0) == 1)
	var wall_data = tilemap.get_cell_tile_data(1,Vector2i.ZERO)
	verify("Full tile wall collision polygon",wall_data.get_collision_polygon_points(0,0) == PackedVector2Array([Vector2(-16,-16),Vector2(16,-16),Vector2(16,16),Vector2(-16,16)]))
	verify("resPath imports actual Marker2D",main.spawn is Marker2D)
	verify("Marker pixel position survives",main.spawn.position == Vector2(80,80))
	verify("Probe spawns from exported marker",main.player.position == Vector2(80,80))
	verify("Probe body checks wall layer",main.player.collision_layer == 2 and main.player.collision_mask == 1)
	var start = main.player.position
	for i in range(12):
		await physics_frame
		main.move_probe(Vector2.RIGHT)
	verify("Actual native interior movement",main.player.position.x > start.x + 10 and abs(main.player.position.y-start.y) < 0.01)
	var pause_key = InputEventKey.new()
	pause_key.physical_keycode = KEY_P
	pause_key.keycode = KEY_P
	pause_key.pressed = true
	root.push_input(pause_key)
	await process_frame
	verify("Native P event toggles pause",main.paused)
	start = main.player.position
	for i in range(3): await physics_frame; main.move_probe(Vector2.RIGHT)
	verify("Pause prevents physics movement",main.player.position == start)
	root.push_input(pause_key)
	await process_frame
	verify("Native P event resumes",not main.paused)
	var reset_key = InputEventKey.new()
	reset_key.physical_keycode = KEY_R
	reset_key.keycode = KEY_R
	reset_key.pressed = true
	root.push_input(reset_key)
	await process_frame
	verify("Reset returns to exported spawn",main.player.position == Vector2(80,80) and main.player.velocity == Vector2.ZERO)
	for pair in [[Vector2.LEFT,0],[Vector2.UP,1],[Vector2.RIGHT,2],[Vector2.DOWN,3]]:
		main.reset_probe()
		for i in range(150):
			await physics_frame
			main.move_probe(pair[0])
		var pos = main.player.position
		var clamped = [pos.x >= 37.9 and pos.x < 39, pos.y >= 37.9 and pos.y < 39, pos.x <= 282.1 and pos.x > 281, pos.y <= 154.1 and pos.y > 153][pair[1]]
		verify("Native wall contact " + str(pair[1]),clamped and main.player.get_slide_collision_count() > 0)
	main.queue_free()
	await process_frame
	var reopened = packed.instantiate()
	root.add_child(reopened)
	reopened.set_physics_process(false)
	await physics_frame
	verify("Second scene starts at spawn",reopened.player.position == Vector2(80,80))
	verify("Second scene keeps map cells",reopened.get_node("Room/TileMap").get_used_cells(1).size() == 28)
	reopened.queue_free()
	await process_frame
	print("FORGE_MAP_CHECKS=" + JSON.stringify({"checks":checks,"failures":failures,"count":checks.size()}))
	quit(0 if failures.is_empty() else 1)