extends CharacterBody2D class_name EntityBase # 这是个抽象类 @export var maxHealth: float = 100 @export var movementSpeed: float = 100 var health: float = 0 func _ready(): health = maxHealth func _process(_delta): health = clamp(health, 0, maxHealth) func _physics_process(_delta: float) -> void: velocity = Vector2.ZERO ai() move_and_slide() # 通用方法 func move(direction: Vector2): velocity = direction.normalized() * movementSpeed # 抽象方法 func ai(): pass func attack(_type: int): pass