# CursorManager —— 对齐 ClientVS22 mousemodule.py 的光标状态机。
#
# 光标和“鼠标跟随物品”是两层：本节点只管理当前交互语义，
# MouseController 负责跟随鼠标的物品图标。没有对应 .sub 资源时使用 Godot
# 系统光标，避免把资源缺失误报成输入状态缺失。
extends Node

signal changed(shape: String)

const NORMAL := "NORMAL"
const ATTACK := "ATTACK"
const TALK := "TALK"
const CANT_GO := "CANT_GO"
const PICK := "PICK"
const BUY := "BUY"
const SELL := "SELL"
const ITEM := "ITEM"

var _shape := NORMAL

func set_cursor(shape: String) -> void:
	if shape not in [NORMAL, ATTACK, TALK, CANT_GO, PICK, BUY, SELL, ITEM]:
		shape = NORMAL
	_shape = shape
	Input.set_default_cursor_shape(_godot_shape(shape))
	changed.emit(shape)

func get_cursor() -> String:
	return _shape

func reset() -> void:
	set_cursor(NORMAL)

func _godot_shape(shape: String) -> Input.CursorShape:
	match shape:
		ATTACK:
			return Input.CURSOR_CROSS
		TALK, BUY, SELL, PICK:
			return Input.CURSOR_POINTING_HAND
		CANT_GO:
			return Input.CURSOR_FORBIDDEN
		ITEM:
			return Input.CURSOR_DRAG
		_:
			return Input.CURSOR_ARROW