# W7 HUD —— 小地图（拼 minimap.dds）+ 状态栏 / 快捷栏 / 背包。
# §6.1：窗口/血条/快捷栏用真实 `ETC/ymir work/ui/pattern/` 九宫格贴图（AssetResolver 机制），
# 精确布局仍待 §0 的 ingame-shinsoo-ui.json。SHINSOO §9-W7 / PARITY §6.1。
# 用法：var hud := preload("res://hud.gd").new(); hud.setup(world, player); add_child(hud)
extends CanvasLayer

var _world: Node
var _player: Node3D
var _minimap_rect: TextureRect
var _minimap_frame: Control
var _dot: ColorRect
var _map_w_m := 1024.0
var _map_h_m := 1280.0
var _inv: Control
var _assets: String
var _pat := "ETC/ymir work/ui/pattern/"
var _tex_cache := {}
var _hp_fill: NinePatchRect
var _mp_fill: NinePatchRect
var _stamina_fill: ColorRect
var _stamina_label: Label
var _exp_fill: ColorRect
var _lvl_label: Label
var _hp_label: Label
var _hp_w := 240.0
var _energy_fill: ColorRect
var _energy_label: Label
var _status_box: VBoxContainer
var quickbar: Node:
	set(v):
		quickbar = v
		if quickbar:
			_sync_vitals_to_quickbar()

var _cached_hp: int = 0
var _cached_max_hp: int = 0
var _cached_sp: int = 0
var _cached_max_sp: int = 0
var _cached_st: int = 0
var _cached_max_st: int = 0
var _cached_exp: int = 0
var _cached_next_exp: int = 0

func _sync_vitals_to_quickbar() -> void:
	if not quickbar:
		return
	if _cached_max_hp > 0 and quickbar.has_method("set_hp"):
		quickbar.set_hp(_cached_hp, _cached_max_hp)
	if _cached_max_sp > 0 and quickbar.has_method("set_sp"):
		quickbar.set_sp(_cached_sp, _cached_max_sp)
	if _cached_max_st > 0 and quickbar.has_method("set_st"):
		quickbar.set_st(_cached_st, _cached_max_st)
	if _cached_next_exp > 0 and quickbar.has_method("set_exp"):
		quickbar.set_exp(_cached_exp, _cached_next_exp)
# 目标血条（P0）
var _target_panel: Control
var _target_name: Label
var _target_fill: ColorRect
# 状态图标条（P4）
var _affect_row: HBoxContainer
# GC_DUNGEON destination compass (ClientVS22: AlarmHaveToGo).
var _dungeon_panel: Control
var _dungeon_label: Label
var _dungeon_arrow: Label
var _dungeon_destination := Vector3.ZERO

func setup(world: Node, player: Node3D) -> void:
	_world = world
	_player = player
	_assets = String(world.get("assets_root"))
	var rep: Dictionary = _world.call("get_load_report")
	_map_w_m = float(rep["map_size_x"]) * 256.0
	_map_h_m = float(rep["map_size_y"]) * 256.0
	_build_minimap(int(rep["map_size_x"]), int(rep["map_size_y"]))
	_build_status()
	# 技能快捷栏由 ui/quickbar.gd 管理：它恢复服务端的 36 个槽位、显示
	# 技能图标并处理冷却。这里以前画的静态空槽会和它重叠，让实际技能看起来
	# 没有加载，因此 HUD 不再创建第二条快捷栏。
	_build_inventory()
	_build_dungeon_compass()

func reload_world(new_world: Node) -> void:
	_world = new_world
	if _world == null:
		return
	var rep: Dictionary = _world.call("get_load_report")
	_map_w_m = float(rep.get("map_size_x", 1)) * 256.0
	_map_h_m = float(rep.get("map_size_y", 1)) * 256.0
	if _minimap_frame and is_instance_valid(_minimap_frame):
		_minimap_frame.queue_free()
		_minimap_frame = null
	_minimap_rect = null
	_dot = null
	if int(rep.get("map_size_x", 0)) > 0 and int(rep.get("map_size_y", 0)) > 0:
		_build_minimap(int(rep["map_size_x"]), int(rep["map_size_y"]))

# --- real UI texture loading (§6.1) -------------------------------------------

func _ui_tex(name: String) -> Texture2D:
	if _tex_cache.has(name):
		return _tex_cache[name]
	var img := Image.new()
	var tex: Texture2D = null
	var cand := _assets.path_join(_pat + name + ".tga")
	if not FileAccess.file_exists(cand):
		# fall back: scan asset packs for "<pack>/ymir work/ui/pattern/<name>.tga"
		var da := DirAccess.open(_assets)
		if da:
			for sub in da.get_directories():
				var p := _assets.path_join(sub).path_join("ymir work/ui/pattern/" + name + ".tga")
				if FileAccess.file_exists(p):
					cand = p
					break
	if FileAccess.file_exists(cand) and img.load(cand) == OK:
		tex = ImageTexture.create_from_image(img)
	_tex_cache[name] = tex
	return tex

# Composite a set of pattern pieces into one atlas and return a NinePatchRect.
#   pieces = {corner_lt, corner_rt, corner_lb, corner_rb, line_t, line_l, base}
func _nine(prefix: String, m: int, base_size: int) -> NinePatchRect:
	var total := m + base_size + m
	var atlas := Image.create_empty(total, total, false, Image.FORMAT_RGBA8)
	atlas.fill(Color(0, 0, 0, 0))
	var put := func(name: String, x: int, y: int) -> void:
		var t := _ui_tex(name)
		if t == null:
			return
		var im := t.get_image()
		im.convert(Image.FORMAT_RGBA8)
		atlas.blit_rect(im, Rect2i(Vector2i.ZERO, im.get_size()), Vector2i(x, y))
	put.call(prefix + "_corner_lefttop", 0, 0)
	put.call(prefix + "_corner_righttop", m + base_size, 0)
	put.call(prefix + "_corner_leftbottom", 0, m + base_size)
	put.call(prefix + "_corner_rightbottom", m + base_size, m + base_size)
	# edges: stretch the piece across the middle band
	var edge := func(name: String, r: Rect2i) -> void:
		var t := _ui_tex(name)
		if t == null:
			return
		var im := t.get_image()
		im.convert(Image.FORMAT_RGBA8)
		im.resize(r.size.x, r.size.y, Image.INTERPOLATE_BILINEAR)
		atlas.blit_rect(im, Rect2i(Vector2i.ZERO, r.size), r.position)
	edge.call(prefix + "_line_top", Rect2i(m, 0, base_size, m))
	edge.call(prefix + "_line_bottom", Rect2i(m, m + base_size, base_size, m))
	edge.call(prefix + "_line_left", Rect2i(0, m, m, base_size))
	edge.call(prefix + "_line_right", Rect2i(m + base_size, m, m, base_size))
	var b := _ui_tex(prefix + "_base")
	if b:
		var bi := b.get_image()
		bi.convert(Image.FORMAT_RGBA8)
		bi.resize(base_size, base_size, Image.INTERPOLATE_BILINEAR)
		atlas.blit_rect(bi, Rect2i(Vector2i.ZERO, Vector2i(base_size, base_size)), Vector2i(m, m))
	var np := NinePatchRect.new()
	np.texture = ImageTexture.create_from_image(atlas)
	np.patch_margin_left = m
	np.patch_margin_right = m
	np.patch_margin_top = m
	np.patch_margin_bottom = m
	return np

# horizontal 3-slice gauge (left cap | tiled centre | right cap) as a NinePatchRect
func _gauge(center_name: String, h: int) -> NinePatchRect:
	var pieces := [center_name + "_left" if _ui_tex(center_name + "_left") else center_name,
			center_name + "_center" if _ui_tex(center_name + "_center") else center_name,
			center_name + "_right" if _ui_tex(center_name + "_right") else center_name]
	var seg := 16
	var atlas := Image.create_empty(seg * 3, h, false, Image.FORMAT_RGBA8)
	atlas.fill(Color(0, 0, 0, 0))
	for i in 3:
		var t := _ui_tex(pieces[i])
		if t == null:
			continue
		var im := t.get_image()
		im.convert(Image.FORMAT_RGBA8)
		im.resize(seg, h, Image.INTERPOLATE_BILINEAR)
		atlas.blit_rect(im, Rect2i(Vector2i.ZERO, Vector2i(seg, h)), Vector2i(i * seg, 0))
	var np := NinePatchRect.new()
	np.texture = ImageTexture.create_from_image(atlas)
	np.patch_margin_left = seg
	np.patch_margin_right = seg
	return np

# --- widgets ----------------------------------------------------------------

func _build_minimap(nx: int, ny: int) -> void:
	var cell := 64
	var big := Image.create_empty(nx * cell, ny * cell, false, Image.FORMAT_RGBA8)
	big.fill(Color(0.08, 0.09, 0.11, 1.0))
	for tx in nx:
		for ty in ny:
			var p: String = _world.call("chunk_dir", tx, ty) + "/minimap.dds"
			if not FileAccess.file_exists(p):
				continue
			var img: Image = _world.call("load_dds", p)
			if img == null:
				continue
			img.resize(cell, cell, Image.INTERPOLATE_BILINEAR)
			big.blit_rect(img, Rect2i(0, 0, cell, cell), Vector2i(tx * cell, ty * cell))
	var mm_h := 192 * ny / nx if nx > 0 else 192
	var frame := _nine("board", 32, 128)
	_minimap_frame = frame
	frame.set_anchors_preset(Control.PRESET_TOP_RIGHT)
	frame.position = Vector2(-192 - 24 - 12, 12)
	frame.size = Vector2(192 + 24, mm_h + 24)
	add_child(frame)
	_minimap_rect = TextureRect.new()
	_minimap_rect.texture = ImageTexture.create_from_image(big)
	_minimap_rect.expand_mode = TextureRect.EXPAND_IGNORE_SIZE
	_minimap_rect.stretch_mode = TextureRect.STRETCH_SCALE
	_minimap_rect.position = Vector2(12, 12)
	_minimap_rect.size = Vector2(192, mm_h)
	frame.add_child(_minimap_rect)
	_dot = ColorRect.new()
	_dot.color = Color(1, 0.9, 0.2)
	_dot.size = Vector2(6, 6)
	_minimap_rect.add_child(_dot)

func _build_status() -> void:
	# 40250 标准：血量、法力、体力、经验均由底部任务栏 Quickbar 的 Gauge_Board 与 EXP_Gauge_Board 承载，
	# HUD 不再在左下角渲染浮动的原型状态条。
	pass

# --- P0: live data setters -------------------------------------------------

func set_status_visible(v: bool) -> void:
	if _status_box and is_instance_valid(_status_box):
		_status_box.visible = v

func set_vitals(hp: int, max_hp: int, sp: int, max_sp: int) -> void:
	_cached_hp = hp
	_cached_max_hp = max_hp
	_cached_sp = sp
	_cached_max_sp = max_sp
	if _hp_fill:
		_hp_fill.size.x = _hp_w * clampf(float(hp) / maxf(1.0, max_hp), 0.0, 1.0)
	if _mp_fill:
		_mp_fill.size.x = _hp_w * clampf(float(sp) / maxf(1.0, max_sp), 0.0, 1.0)
	if _hp_label:
		_hp_label.text = "%d / %d" % [hp, max_hp]
	if quickbar:
		if quickbar.has_method("set_hp"):
			quickbar.set_hp(hp, max_hp)
		if quickbar.has_method("set_sp"):
			quickbar.set_sp(sp, max_sp)

func set_exp(xp: int, next_xp: int) -> void:
	_cached_exp = xp
	_cached_next_exp = next_xp
	if _exp_fill:
		_exp_fill.size.x = _hp_w * clampf(float(xp) / maxf(1.0, next_xp), 0.0, 1.0)
	if quickbar and quickbar.has_method("set_exp"):
		quickbar.set_exp(xp, next_xp)

func set_level(lv: int) -> void:
	if _lvl_label:
		_lvl_label.text = "Lv %d" % lv

func set_energy(value: int, max_value: int = 100) -> void:
	var cap := maxi(1, max_value)
	var v := clampi(value, 0, cap)
	if _energy_fill:
		_energy_fill.size.x = _hp_w * float(v) / float(cap)
	if _energy_label:
		_energy_label.text = "%d / %d" % [v, cap]

func set_stamina(value: int, max_value: int) -> void:
	_cached_st = value
	_cached_max_st = max_value
	var cap := maxi(1, max_value)
	var v := clampi(value, 0, cap)
	if _stamina_fill:
		_stamina_fill.size.x = _hp_w * float(v) / float(cap)
	if _stamina_label:
		_stamina_label.text = "%d / %d" % [v, cap]
	if quickbar and quickbar.has_method("set_st"):
		quickbar.set_st(value, max_value)

# P4：状态图标条。affects = [{type, point_idx, value, flag, duration}, ...]
func set_affects(affects: Array) -> void:
	if _affect_row == null:
		_affect_row = HBoxContainer.new()
		_affect_row.set_anchors_preset(Control.PRESET_TOP_LEFT)
		_affect_row.position = Vector2(18, 18)
		_affect_row.add_theme_constant_override("separation", 3)
		add_child(_affect_row)
	for c in _affect_row.get_children():
		c.queue_free()
	for a in affects:
		var sq := ColorRect.new()
		sq.custom_minimum_size = Vector2(22, 22)
		var t := int(a.get("type", 0))
		sq.color = Color.from_hsv(fmod(t * 0.13, 1.0), 0.55, 0.9, 0.95)
		sq.tooltip_text = "affect #%d  pt%d %+d  %ds" % [t, int(a.get("point_idx", 0)),
				int(a.get("value", 0)), int(a.get("duration", 0))]
		_affect_row.add_child(sq)

func set_target(nm: String, hp_pct: int) -> void:
	if _target_panel == null:
		_build_target_panel()
	_target_panel.visible = true
	_target_name.text = nm if nm != "" else "Target"
	_target_fill.size.x = 180.0 * clampf(hp_pct / 100.0, 0.0, 1.0)

func clear_target() -> void:
	if _target_panel:
		_target_panel.visible = false

func set_dungeon_destination(active: bool, world_pos: Vector3) -> void:
	_dungeon_destination = world_pos
	if _dungeon_panel:
		_dungeon_panel.visible = active
		if not active:
			_dungeon_label.text = ""

func _build_dungeon_compass() -> void:
	_dungeon_panel = Control.new()
	_dungeon_panel.name = "DungeonCompass"
	_dungeon_panel.set_anchors_preset(Control.PRESET_CENTER_TOP)
	_dungeon_panel.position = Vector2(-110, 18)
	_dungeon_panel.size = Vector2(220, 42)
	_dungeon_panel.visible = false
	add_child(_dungeon_panel)
	var bg := ColorRect.new()
	bg.color = Color(0.04, 0.05, 0.08, 0.78)
	bg.size = _dungeon_panel.size
	bg.mouse_filter = Control.MOUSE_FILTER_IGNORE
	_dungeon_panel.add_child(bg)
	_dungeon_label = Label.new()
	_dungeon_label.position = Vector2(30, 5)
	_dungeon_label.add_theme_font_size_override("font_size", 12)
	_dungeon_panel.add_child(_dungeon_label)
	_dungeon_arrow = Label.new()
	_dungeon_arrow.text = "▲"
	_dungeon_arrow.position = Vector2(8, 9)
	_dungeon_arrow.add_theme_font_size_override("font_size", 18)
	_dungeon_panel.add_child(_dungeon_arrow)

func _build_target_panel() -> void:
	_target_panel = Control.new()
	_target_panel.set_anchors_preset(Control.PRESET_CENTER_TOP)
	_target_panel.position = Vector2(-100, 16)
	_target_panel.size = Vector2(200, 40)
	add_child(_target_panel)
	_target_name = Label.new()
	_target_name.add_theme_font_size_override("font_size", 12)
	_target_name.position = Vector2(10, 0)
	_target_panel.add_child(_target_name)
	var slot := ColorRect.new()
	slot.color = Color(0, 0, 0, 0.55)
	slot.position = Vector2(10, 18)
	slot.size = Vector2(180, 12)
	_target_panel.add_child(slot)
	_target_fill = ColorRect.new()
	_target_fill.color = Color(0.85, 0.2, 0.2)
	_target_fill.size = Vector2(180, 12)
	slot.add_child(_target_fill)

func _build_inventory() -> void:
	# 40250 标准：背包由 ui/inventory_ui.gd 统一管理，不再在此创建原型窗口。
	pass

func _input(_ev: InputEvent) -> void:
	pass

func _process(_dt: float) -> void:
	if _player:
		if _dungeon_panel and _dungeon_panel.visible:
			var d := _dungeon_destination - _player.global_position
			var distance := Vector2(d.x, d.z).length()
			_dungeon_label.text = "副本目标  %.0fm" % distance
			# Player forward is +Z in this scene; rotate the north-facing arrow
			# relative to the current player yaw, keeping the target prompt local.
			_dungeon_arrow.rotation = atan2(d.x, d.z) - _player.rotation.y
		if _minimap_rect:
			var u := clampf(_player.position.x / _map_w_m, 0.0, 1.0)
			var v := clampf(_player.position.z / _map_h_m, 0.0, 1.0)
			_dot.position = Vector2(u * _minimap_rect.size.x - 3, v * _minimap_rect.size.y - 3)