# net_world_vis_test —— CLIENT-GAP §2.1 两层模型 / 可见性剔除的 headless 自检。
#   godot --headless --path project --script net_world_vis_test.gd
# 用带 pos_cm 的假 client 驱动 net_world.gd 的每帧可见性管理：
#   - 数据层始终有全部实体；场景节点只在进入 CHAR_STAGE_VIEW_BOUND 时创建
#   - 主角走近 -> 远端实体补建；主角走远 -> 节点淡出（数据保留）
#   - AFFECT_SHOW_ALWAYS / IsWall 的实体无视距离常驻
# 退出码 0 = 全过。
extends SceneTree

const NetWorld = preload("res://net_world.gd")

const BOUND := 200 * 100          # CHAR_STAGE_VIEW_BOUND
const NEAR_CM := Vector2(100 * 100, 0)   # 10000 cm < BOUND
const FAR_CM := Vector2(500 * 100, 0)    # 50000 cm > BOUND + 10

class FakeClient extends Node:
	signal entity_spawned(entity: Dictionary)
	signal entity_despawned(vid: int)
	signal entity_moved(vid: int)
	signal entity_main_set(vid: int)
	signal entity_info(vid: int, entity: Dictionary)
	signal chat(type: int, vid: int, text: String)
	signal vitals_changed(vid: int)
	signal entity_dead(vid: int)
	signal damage(vid: int, amount: int, flag: int)
	var ents := {}
	func get_entity(vid: int) -> Dictionary: return ents.get(vid, {})
	func get_entities() -> Array: return ents.values()
	func get_pvp_relations() -> Array: return []
	func get_duel() -> Dictionary: return {}
	func add(vid: int, cm: Vector2, extra := {}) -> Dictionary:
		var d := {"vid": vid, "name": "e%d" % vid, "is_main": false,
			"func": 0, "moving": false, "angle_deg": 0.0,
			"hp": 100, "max_hp": 100, "dead": false, "race": 0,
			"affect_flags": 0, "parts": [0, 0, 0, 0],
			"pos": Vector3(cm.x * 0.01, 0.0, -cm.y * 0.01),
			"pos_cm": Vector3(cm.x, cm.y, 0.0)}
		d.merge(extra, true)
		ents[vid] = d
		return d
	func move_main(cm: Vector2) -> void:
		ents[1]["pos_cm"] = Vector3(cm.x, cm.y, 0.0)
		ents[1]["pos"] = Vector3(cm.x * 0.01, 0.0, -cm.y * 0.01)

var _fail := 0
func _ck(c: bool, m: String) -> void:
	if not c:
		_fail += 1
		printerr("FAIL: " + m)

func _init() -> void:
	await _run()
	if _fail == 0:
		print("PASS: net_world_vis_test (§2.1 two-layer visibility cull / re-show)")
		quit(0)
	else:
		printerr("%d check(s) failed" % _fail)
		quit(1)

func _run() -> void:
	var mount := Node3D.new()
	get_root().add_child(mount)
	var fc := FakeClient.new()
	get_root().add_child(fc)
	var nw: Node = NetWorld.new()
	get_root().add_child(nw)
	nw.setup(fc, mount)

	var added := {}
	var removed := {}
	nw.entity_added.connect(func(_n, v): added[v] = int(added.get(v, 0)) + 1)
	nw.entity_removed.connect(func(v): removed[v] = int(removed.get(v, 0)) + 1)

	# main character at origin
	fc.add(1, Vector2.ZERO, {"is_main": true})
	fc.entity_main_set.emit(1)

	# 1) a near entity spawns a node immediately (signal path, in view)
	var near := fc.add(2, NEAR_CM)
	fc.entity_spawned.emit(near)
	_ck(nw.node_for(2) != null, "near entity (10000cm) -> node built on spawn")

	# 2) a far entity is data-only: the spawn signal must NOT build a node
	var far := fc.add(3, FAR_CM)
	fc.entity_spawned.emit(far)
	_ck(nw.node_for(3) == null, "far entity (50000cm) -> spawn signal builds no node (§2.1)")

	await process_frame
	_ck(nw.node_for(3) == null, "far entity still nodeless after a visibility pass")
	_ck(nw.node_for(2) != null, "near entity keeps its node while main is close")

	# 3) main walks over to the far entity -> per-frame manager builds its node
	fc.move_main(FAR_CM)
	await process_frame
	await process_frame
	_ck(nw.node_for(3) != null, "main in range -> _update_visibility builds the far node")
	_ck(int(added.get(3, 0)) == 1, "far node built exactly once")

	# 4) entity 2 is now out of range -> node blends out, data row stays
	_ck(nw.node_for(2) == null, "entity 2 out of range -> node culled")
	_ck(int(removed.get(2, 0)) == 1, "cull emits entity_removed once")
	_ck(fc.get_entity(2).has("vid"), "culled entity still present in the data layer")

	await process_frame
	_ck(nw.node_for(2) == null, "culled entity is not rebuilt while it stays out of range")

	# 5) AFFECT_SHOW_ALWAYS (bit 7) -> force-visible regardless of distance
	var beacon := fc.add(4, FAR_CM + Vector2(90000, 0), {"affect_flags": 1 << 7})
	fc.entity_spawned.emit(beacon)
	_ck(nw.node_for(4) != null, "AFFECT_SHOW_ALWAYS entity -> node built though far")
	await process_frame
	_ck(nw.node_for(4) != null, "force-visible entity survives the cull loop")

	# 6) IsWall race -> always mirrored
	var wall := fc.add(5, FAR_CM + Vector2(120000, 0), {"race": 14202})
	fc.entity_spawned.emit(wall)
	await process_frame
	_ck(nw.node_for(5) != null, "wall race (14202) -> node built and kept regardless of distance")

	# 7) main walks back -> entity 2 comes into view again and is rebuilt
	fc.move_main(NEAR_CM)
	# entity 2's fade tween (0.3s) must finish before it can be rebuilt
	await create_tween().tween_interval(0.5).finished
	await process_frame
	_ck(nw.node_for(2) != null, "main back in range -> culled entity rebuilt after its fade")
	_ck(int(added.get(2, 0)) == 2, "entity 2 rebuilt exactly once on re-entry")