# netplay_test —— P0 闭环胶水（net_play.gd）的 headless 自检。
#   godot --headless --path project --script netplay_test.gd
# 用假 M2Client / 假 PlayerController / 假 HUD 驱动，断言 net_play 产生的调用正确。
# 退出码 0 = 全过。
extends SceneTree

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

class FakeClient extends Node:
	signal entity_spawned(entity: Dictionary)
	signal entity_despawned(vid: int)
	signal entity_moved(vid: int)
	signal entity_info(vid: int, entity: Dictionary)
	signal entity_main_set(vid: int)
	signal entity_dead(vid: int)
	signal vitals_changed(vid: int)
	signal points_changed(points: Dictionary)
	signal target_info(vid: int, hp_percent: int)
	signal chat(type: int, vid: int, text: String)
	var ents := {}
	var main := 0
	var in_game := true
	var calls := {"move": [], "attack": [], "set_target": []}
	func is_in_game() -> bool: return in_game
	func get_main_vid() -> int: return main
	func get_entity(vid: int) -> Dictionary: return ents.get(vid, {})
	func move(f, a, rot, x, y) -> bool: calls.move.append([f, a, rot, x, y]); return true
	func attack(motion, vid) -> bool: calls.attack.append([motion, vid]); return true
	func set_target(vid) -> bool: calls.set_target.append(vid); return true

class FakePC extends Node:
	signal target_selected(node: Node3D)
	signal moved(pos: Vector3)
	signal anim_state(state: String)
	var player: Node3D
	var server_speed := 1.0
	func set_server_speed(moving_speed: int) -> void: server_speed = float(moving_speed) / 100.0

class FakeHud extends Node:
	var vitals := []
	var exp_v := []
	var level := 0
	var target := []
	var energy := []
	var cleared := 0
	func set_vitals(hp, mhp, sp, msp): vitals = [hp, mhp, sp, msp]
	func set_exp(xp, nxp): exp_v = [xp, nxp]
	func set_level(lv): level = lv
	func set_energy(value, maximum): energy = [value, maximum]
	func set_target(nm, pct): target = [nm, pct]
	func clear_target(): cleared += 1

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: netplay_test (P0 move/attack/target/HUD loop)")
		quit(0)
	else:
		printerr("%d check(s) failed" % _fail)
		quit(1)

func _run() -> void:
	var root := get_root()
	var fc := FakeClient.new()
	var pc := FakePC.new()
	var hud := FakeHud.new()
	var nw: Node = NetWorld.new()
	pc.player = Node3D.new()
	root.add_child(fc); root.add_child(pc); root.add_child(hud); root.add_child(nw)
	root.add_child(pc.player)
	var np: Node = NetPlay.new()
	root.add_child(np)
	np.setup(fc, pc, nw, hud)

	fc.main = 1000
	fc.ents[1000] = {"vid": 1000, "pos": Vector3.ZERO, "hp": 200, "max_hp": 200,
		"moving_speed": 150, "attack_speed": 150}
	fc.entity_main_set.emit(1000)
	fc.entity_info.emit(1000, fc.ents[1000])
	_ck(is_equal_approx(pc.server_speed, 1.5), "GC_CHANGE_SPEED -> local prediction speed scale")
	_ck(is_equal_approx(np.attack_period, 0.4), "entity attack_speed -> attack cadence")

	# 1) 点地移动 -> move(FUNC_MOVE) 带 server cm + heading
	pc.player.position = Vector3(3, 0, -5)     # to_server_cm -> (300, -500)
	pc.player.rotation.y = 0.0
	pc.moved.emit(pc.player.position)
	_ck(fc.calls.move.size() == 1, "one move sent")
	if fc.calls.move.size() == 1:
		var mv: Array = fc.calls.move[0]
		_ck(mv[0] == 1, "func == FUNC_MOVE")
		_ck(mv[3] == 300 and mv[4] == -500, "server cm (300,-500), got (%d,%d)" % [mv[3], mv[4]])
		_ck(mv[2] >= 0 and mv[2] < 360, "heading in [0,360)")

	# 2) 节流：紧接着的小位移不发
	pc.player.position = Vector3(3.3, 0, -5)
	pc.moved.emit(pc.player.position)
	_ck(fc.calls.move.size() == 1, "small quick move throttled")

	# 3) 停下 -> move(FUNC_WAIT) 一次
	pc.anim_state.emit("wait")
	_ck(fc.calls.move.size() == 2 and fc.calls.move[1][0] == 0, "stop -> FUNC_WAIT sent")
	pc.anim_state.emit("wait")
	_ck(fc.calls.move.size() == 2, "second wait not re-sent")

	# 4) 点实体 -> set_target
	var mob := Node3D.new()
	mob.set_meta("vid", 2000)
	root.add_child(mob)
	mob.position = Vector3(4, 0, -5)           # 距玩家(3.3,0,-5) 0.7m -> 攻击距离内
	fc.ents[2000] = {"vid": 2000, "name": "Wolf", "pos": mob.position, "hp": 50, "max_hp": 50, "dead": false}
	nw._by_vid[2000] = mob                     # 让 net_world.node_for(2000) 命中
	pc.target_selected.emit(mob)
	_ck(fc.calls.set_target.size() == 1 and fc.calls.set_target[0] == 2000, "set_target(2000)")

	# 5) 攻击距离内 -> 按 attack_period 自动 attack
	for i in 4: await process_frame
	_ck(fc.calls.attack.size() >= 1, "auto-attack fired, got %d" % fc.calls.attack.size())
	if fc.calls.attack.size() >= 1:
		_ck(fc.calls.attack[0][1] == 2000, "attack victim == 2000")
	var n1: int = fc.calls.attack.size()
	await process_frame
	_ck(fc.calls.attack.size() == n1, "attack throttled within period")

	# 6) points_changed -> HUD
	fc.points_changed.emit({"hp": 120, "max_hp": 200, "sp": 30, "max_sp": 80,
		"exp": 50, "next_exp": 100, "level": 7, "energy": 75})
	_ck(hud.vitals == [120, 200, 30, 80], "hud.set_vitals from points")
	_ck(hud.exp_v == [50, 100], "hud.set_exp")
	_ck(hud.level == 7, "hud.set_level")
	_ck(hud.energy == [75, 100], "hud.set_energy from POINT_ENERGY")

	# 7) 自己的 GC_MOVE 位置校正（远 -> 瞬移）
	fc.ents[1000]["pos"] = Vector3(50, 0, -5)
	fc.entity_moved.emit(1000)
	_ck(pc.player.position.distance_to(Vector3(50, 0, pc.player.position.z)) < 0.01,
		"far server pos -> snap, got %s" % pc.player.position)

	# 8) target_info -> hud.set_target
	fc.target_info.emit(2000, 40)
	_ck(hud.target.size() == 2 and hud.target[1] == 40, "hud.set_target(pct=40)")

	# 9) 目标死亡 -> 清目标
	fc.ents[2000]["dead"] = true
	fc.entity_dead.emit(2000)
	_ck(hud.cleared >= 1, "target cleared on death")