89 lines
2.2 KiB
GDScript
89 lines
2.2 KiB
GDScript
extends Control
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class_name VirtualButton
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## 虚拟按钮控件
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## 用于移动端触摸输入
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# 按钮参数
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@export var button_radius: float = 40.0
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@export var button_text: String = "E"
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# 按钮状态
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var is_pressed_state: bool = false
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var was_just_pressed: bool = false
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var touch_index: int = -1
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# 视觉元素
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var button_circle: ColorRect
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var label: Label
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func _ready():
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"""初始化虚拟按钮"""
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_create_visual_elements()
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# 设置大小
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custom_minimum_size = Vector2(button_radius * 2, button_radius * 2)
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size = custom_minimum_size
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func _create_visual_elements():
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"""创建按钮的视觉元素"""
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# 创建按钮背景
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button_circle = ColorRect.new()
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button_circle.color = Color(0.2, 0.6, 0.2, 0.6)
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button_circle.size = Vector2(button_radius * 2, button_radius * 2)
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button_circle.position = Vector2.ZERO
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add_child(button_circle)
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# 创建文本标签
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label = Label.new()
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label.text = button_text
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label.horizontal_alignment = HORIZONTAL_ALIGNMENT_CENTER
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label.vertical_alignment = VERTICAL_ALIGNMENT_CENTER
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label.size = Vector2(button_radius * 2, button_radius * 2)
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label.position = Vector2.ZERO
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label.add_theme_font_size_override("font_size", 24)
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add_child(label)
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func _process(_delta: float):
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"""每帧更新"""
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# 重置 just_pressed 状态
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if was_just_pressed:
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was_just_pressed = false
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func _gui_input(event: InputEvent):
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"""处理触摸输入"""
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if event is InputEventScreenTouch:
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if event.pressed:
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# 触摸开始
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is_pressed_state = true
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was_just_pressed = true
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touch_index = event.index
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_update_visual(true)
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elif event.index == touch_index:
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# 触摸结束
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is_pressed_state = false
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touch_index = -1
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_update_visual(false)
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func _update_visual(pressed: bool):
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"""更新按钮视觉状态"""
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if pressed:
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button_circle.color = Color(0.3, 0.8, 0.3, 0.8)
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else:
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button_circle.color = Color(0.2, 0.6, 0.2, 0.6)
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## 检查按钮是否刚被按下
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func is_pressed() -> bool:
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"""
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检查按钮是否刚被按下（类似 Input.is_action_just_pressed）
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@return: 是否刚被按下
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"""
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return was_just_pressed
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## 检查按钮是否正在被按住
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func is_held() -> bool:
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"""
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检查按钮是否正在被按住
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@return: 是否被按住
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"""
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return is_pressed_state
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