UE4 摇杆JoyStick-Touch Interface Setup

1.创建

2、属性

  

   

    

     

    
    

     

      USTRUCT()
     
    
   

    

     

    
    

     

      struct FTouchInputControl
     
    
   

    

     

    
    

     

      {
     
    
   

    

     

    
    

     
	GENERATED_USTRUCT_BODY()
     
    
   

    

     

    
    

     
 
     
    
   

    

     

    
    

     
    //自由活动图片
     
    
   

    

     

    
    

     
	// basically mirroring SVirtualJoystick::FControlInfo but as an editable class
     
    
   

    

     

    
    

     
	UPROPERTY(EditAnywhere, Category="Control", meta=(ToolTip="For sticks, this is the Thumb"))
     
    
   

    

     

    
    

     

      	UTexture2D* Image1;
     
    
   

    

     

    
    

     
    
     
    
   

    

     

    
    

     
    //底图
     
    
   

    

     

    
    

     
	UPROPERTY(EditAnywhere, Category="Control", meta=(ToolTip="For sticks, this is the Background"))
     
    
   

    

     

    
    

     

      	UTexture2D* Image2;
     
    
   

    

     

    
    

     
 
     
    
   

    

     

    
    

     
    //中心位置
     
    
   

    

     

    
    

     
	UPROPERTY(EditAnywhere, Category="Control", meta=(ToolTip="The center point of the control (if <= 1.0, it's relative to screen, > 1.0 is absolute)"))
     
    
   

    

     

    
    

     

      	FVector2D Center;
     
    
   

    

     

    
    

     
 
     
    
   

    

     

    
    

     
    //可见范围
     
    
   

    

     

    
    

     
	UPROPERTY(EditAnywhere, Category="Control", meta=(ToolTip="The size of the control (if <= 1.0, it's relative to screen, > 1.0 is absolute)"))
     
    
   

    

     

    
    

     

      	FVector2D VisualSize;
     
    
   

    

     

    
    

     
 
     
    
   

    

     

    
    

     
    //自由活动图片的尺寸
     
    
   

    

     

    
    

     
	UPROPERTY(EditAnywhere, Category="Control", meta=(ToolTip="For sticks, the size of the thumb (if <= 1.0, it's relative to screen, > 1.0 is absolute)"))
     
    
   

    

     

    
    

     

      	FVector2D ThumbSize;
     
    
   

    

     

    
    

     
 
     
    
   

    

     

    
    

     
    //触摸响应范围
     
    
   

    

     

    
    

     
	UPROPERTY(EditAnywhere, Category="Control", meta=(ToolTip="The interactive size of the control (if <= 1.0, it's relative to screen, > 1.0 is absolute)"))
     
    
   

    

     

    
    

     

      	FVector2D InteractionSize;
     
    
   

    

     

    
    

     
 
     
    
   

    

     

    
    

     
    //输入力度/强度
     
    
   

    

     

    
    

     
	UPROPERTY(EditAnywhere, Category = "Control", meta = (ToolTip = "The scale for control input"))
     
    
   

    

     

    
    

     

      	FVector2D InputScale;
     
    
   

    

     

    
    

     
 
     
    
   

    

     

    
    

     
    //按键：触发与ProjectSetting中对应按键相同的输入事件
     
    
   

    

     

    
    

     
	UPROPERTY(EditAnywhere, Category="Control", meta=(ToolTip="The main input to send from this control (for sticks, this is the horizontal axis)"))
     
    
   

    

     

    
    

     

      	FKey MainInputKey;
     
    
   

    

     

    
    

     
 
     
    
   

    

     

    
    

     
    //按键：触发与ProjectSetting中对应ALT+按键相同的输入事件
     
    
   

    

     

    
    

     
	UPROPERTY(EditAnywhere, Category="Control", meta=(ToolTip="The alternate input to send from this control (for sticks, this is the vertical axis)"))
     
    
   

    

     

    
    

     

      	FKey AltInputKey;
     
    
   

    

     

    
    

     
 
     
    
   

    

     

    
    

     
	FTouchInputControl()
     
    
   

    

     

    
    

     

      		: Image1(nullptr)
     
    
   

    

     

    
    

     

      		, Image2(nullptr)
     
    
   

    

     

    
    

     

      		, Center(ForceInitToZero)
     
    
   

    

     

    
    

     

      		, VisualSize(ForceInitToZero)
     
    
   

    

     

    
    

     

      		, ThumbSize(ForceInitToZero)
     
    
   

    

     

    
    

     

      		, InteractionSize(ForceInitToZero)
     
    
   

    

     

    
    

     

      		, InputScale(1.f, 1.f)
     
    
   

    

     

    
    

     

      	{
     
    
   

    

     

    
    

     

      	}
     
    
   

    

     

    
    

     

      };
     
    
   

    

     

    
    

     
 
     
    
   

    

     

    
    

     

      UCLASS(Blueprintable, BlueprintType)
     
    
   

    

     

    
    

     

      class ENGINE_API UTouchInterface : public UObject
     
    
   

    

     

    
    

     

      {
     
    
   

    

     

    
    

     
	GENERATED_UCLASS_BODY()
     
    
   

    

     

    
    

     
 
     
    
   

    

     

    
    

     
    //控制的元素列表
     
    
   

    

     

    
    

     
	UPROPERTY(EditAnywhere, Category="TouchInterface")
     
    
   

    

     

    
    

     

      	TArray<FTouchInputControl> Controls;
     
    
   

    

     

    
    

     
 
     
    
   

    

     

    
    

     
    //激活状态的透明度
     
    
   

    

     

    
    

     
	UPROPERTY(EditAnywhere, Category="TouchInterface", meta=(ToolTip="Opacity (0.0 - 1.0) of all controls while any control is active"))
     
    
   

    

     

    
    

     
	float ActiveOpacity;
     
    
   

    

     

    
    

     
 
     
    
   

    

     

    
    

     
    //非激活状态的透明度
     
    
   

    

     

    
    

     
	UPROPERTY(EditAnywhere, Category="TouchInterface", meta=(ToolTip="Opacity (0.0 - 1.0) of all controls while no controls are active"))
     
    
   

    

     

    
    

     
	float InactiveOpacity;
     
    
   

    

     

    
    

     
 
     
    
   

    

     

    
    

     
    //进去非激活状态的时间，一旦没有输入就开始计时
     
    
   

    

     

    
    

     
	UPROPERTY(EditAnywhere, Category="TouchInterface", meta=(ToolTip="How long after user interaction will all controls fade out to Inactive Opacity"))
     
    
   

    

     

    
    

     
	float TimeUntilDeactive;
     
    
   

    

     

    
    

     
 
     
    
   

    

     

    
    

     
    //复位的时间
     
    
   

    

     

    
    

     
	UPROPERTY(EditAnywhere, Category="TouchInterface", meta=(ToolTip="How long after going inactive will controls reset/recenter themselves (0.0 will disable this feature)"))
     
    
   

    

     

    
    

     
	float TimeUntilReset;
     
    
   

    

     

    
    

     
 
     
    
   

    

     

    
    

     
    //延迟激活
     
    
   

    

     

    
    

     
	UPROPERTY(EditAnywhere, Category="TouchInterface", meta=(ToolTip="How long after joystick enabled for touch (0.0 will disable this feature)"))
     
    
   

    

     

    
    

     
	float ActivationDelay;
     
    
   

    

     

    
    

     
 
     
    
   

    

     

    
    

     
    //不准复位
     
    
   

    

     

    
    

     
	UPROPERTY(EditAnywhere, Category="TouchInterface", meta=(ToolTip="Whether to prevent joystick re-center"))
     
    
   

    

     

    
    

     
	bool bPreventRecenter;
     
    
   

    

     

    
    

     
 
     
    
   

    

     

    
    

     
    //
     
    
   

    

     

    
    

     
	UPROPERTY(EditAnywhere, Category = "TouchInterface", meta = (ToolTip = "Delay at startup before virtual joystick is drawn"))
     
    
   

    

     

    
    

     
	float StartupDelay;
     
    
   

    

     

    
    

     
 
     
    
   

    

     

    
    

     
    //与JoyStick耦合的接口
     
    
   

    

     

    
    

     
	/** Make this the active set of touch controls */
     
    
   

    

     

    
    

     
	void Activate(TSharedPtr<SVirtualJoystick> VirtualJoystick);
     
    
   

    

     

    
    

     

      };
     
    
  
 

文章来源: blog.csdn.net，作者：呦呦鹿鸣.，版权归原作者所有，如需转载，请联系作者。

原文链接：blog.csdn.net/zhang1461376499/article/details/118970208