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 classUPROPERTY(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);
};