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80 lines
2.2 KiB
80 lines
2.2 KiB
extends CharacterBody2D
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## 挡板：跟随键盘或鼠标左右移动，支持加宽道具。
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## 速度/边界在编辑器里可调。
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@export var speed: float = 600.0
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@export var use_mouse: bool = true
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@export var left_bound: float = 32.0
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@export var right_bound: float = 1248.0
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@export var default_size: Vector2 = Vector2(96, 16) ## 初始宽高
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@export var wide_size: Vector2 = Vector2(160, 16) ## 加宽后尺寸
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@export var wide_duration: float = 10.0 ## 加宽持续时间（秒）
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@onready var _collision_shape: CollisionShape2D = $CollisionShape2D
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@onready var _visual: ColorRect = $ColorRect
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@onready var _shape: RectangleShape2D = _collision_shape.shape
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var _wide_timer: float = 0.0
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var _is_wide_active: bool = false ## 边界是否已被缩过（防止多次加宽累积）
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func _ready() -> void:
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add_to_group("paddle")
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_resize(default_size)
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func _physics_process(_delta: float) -> void:
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# 加宽倒计时
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if _wide_timer > 0.0:
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_wide_timer -= _delta
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if _wide_timer <= 0.0:
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_resize(default_size)
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if _is_wide_active:
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left_bound -= 32.0
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right_bound += 32.0
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_is_wide_active = false
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var target_x: float = position.x
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if use_mouse:
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target_x = clamp(get_global_mouse_position().x, left_bound, right_bound)
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else:
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var dir: float = 0.0
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if Input.is_action_pressed("ui_left"):
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dir -= 1.0
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if Input.is_action_pressed("ui_right"):
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dir += 1.0
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target_x = position.x + speed * dir * _delta
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position.x = clamp(target_x, left_bound, right_bound)
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velocity = Vector2.ZERO
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func widen() -> void:
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if not _is_wide_active:
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_resize(wide_size)
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left_bound += 32.0
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right_bound -= 32.0
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_is_wide_active = true
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_wide_timer = wide_duration # 续期
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func is_wide() -> bool:
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return _wide_timer > 0.0
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func reset_state() -> void:
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# 关卡切换时调用：撤销加宽
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if _is_wide_active:
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_resize(default_size)
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left_bound -= 32.0
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right_bound += 32.0
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_is_wide_active = false
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_wide_timer = 0.0
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func get_half_width() -> float:
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return _shape.size.x / 2.0
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func get_wide_timer() -> float:
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return _wide_timer
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func _resize(size: Vector2) -> void:
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_shape.size = size
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_visual.size = size
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_visual.position = -size / 2.0 # 中心对齐
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