LibGDX - 获取向上滑动或向右滑动等？ [英] LibGDX - Get Swipe Up or swipe right etc.?

问题描述

在绿色区域，用户可以刷卡上，右，下，左。 我怎么能现在得到如刷卡了？或向下滑动？或向右滑动或刷卡剩下什么？ 例如如何得到一个字符串 - >输入= getSwiped（）; - >输入，然后向上，或右，或下，或左

和用户可触摸两个按钮。 1或2。 1是鸭和2是跳。

我想在同一时间检查此输入。用户可触摸并滑动向上在同一时刻。

我知道有一个GestureDetector。我看了看code，但不知道我怎么可以用刷卡的部分。

我知道一点点如何检查按钮。问题是，只有在这里 - >如何检查输入的同时，如何让向上滑动，或向右滑动等

我搜索一个发现了如何检查Multitouching：

 的for（int i = 0;我小于10;我++）{
    如果（Gdx.input.isTouched（一）==假）继续;
    浮X = Gdx.input.getX（ⅰ）;
    浮Y = Gdx.graphics.getHeight（） -  Gdx.input.getY（ⅰ） -  1;
    // ...
}
 

解决方案

这解释实施一套系统来检测交换的方向迈出的非常好的方法。我将它张贴在这里，因为文章可能会丢失在未来：

创建一个类名SimpleDirectionGestureDetector

 公共类SimpleDirectionGestureDetector扩展GestureDetector {
公共接口DirectionListener {
    无效onLeft（）;

    无效onRight（）;

    无效onUp（）;

    无效onDown（）;
}

公共SimpleDirectionGestureDetector（DirectionListener directionListener）{
    超（新DirectionGestureListener（directionListener））;
}

私有静态类DirectionGestureListener扩展GestureAdapter {
    DirectionListener directionListener;

    公共DirectionGestureListener（DirectionListener directionListener）{
        this.directionListener = directionListener;
    }

    @覆盖
    公共布尔一扔（浮点velocityX，浮velocityY，INT按钮）{
        如果（Math.abs（velocityX）＆GT; Math.abs（velocityY））{
            如果（velocityX大于0）{
                    directionListener.onRight（）;
            }其他{
                    directionListener.onLeft（）;
            }
        }其他{
            如果（velocityY大于0）{
                    directionListener.onDown（）;
            }其他{
                    directionListener.onUp（）;
            }
        }
        返回super.fling（velocityX，velocityY，按钮）;
    }

}

}
 

在LibGdx应用程序的创建（）函数，把这个激活手势操作为您的游戏：

  Gdx.input.setInputProcessor（新SimpleDirectionGestureDetector（新SimpleDirectionGestureDetector.DirectionListener（）{

@覆盖
公共无效onUp（）{

}

@覆盖
公共无效onRight（）{

}

@覆盖
公共无效onLeft（）{

}

@覆盖
公共无效onDown（）{

}
}））;
 

In the green area the user can swipe up, right, down, left. How can I now get e.g. swipe Up? or swipe Down? or swipe right or swipe left? e.g. how to get a String -> input = getSwiped(); -> input is then Up, or right, or down, or left

And the user can touch two buttons. 1 or 2. 1 is for duck and 2 is for jump.

I want to check this inputs at the same time. The user can touch and also swipe Up at the same moment.

I know there is a GestureDetector. I looked at the code, but no clue how can I use the swipe part.

I know a little bit how to check the buttons. The problem is only here -> How to check the inputs at the same time and how get Swipe Up, or Swipe right etc.

I searched an found how to check Multitouching:

for (int i = 0; i < 10; i++) {
    if (Gdx.input.isTouched(i) == false) continue;
    float x = Gdx.input.getX(i);
    float y = Gdx.graphics.getHeight() - Gdx.input.getY(i) - 1;
    //...
}

解决方案

This explain a very good way to implement a system to detect the direction of a swap. I'll post it here because the article may be lost in the future:

Create a class name SimpleDirectionGestureDetector

public class SimpleDirectionGestureDetector extends GestureDetector {
public interface DirectionListener {
    void onLeft();

    void onRight();

    void onUp();

    void onDown();
}

public SimpleDirectionGestureDetector(DirectionListener directionListener) {
    super(new DirectionGestureListener(directionListener));
}

private static class DirectionGestureListener extends GestureAdapter{
    DirectionListener directionListener;

    public DirectionGestureListener(DirectionListener directionListener){
        this.directionListener = directionListener;
    }

    @Override
    public boolean fling(float velocityX, float velocityY, int button) {
        if(Math.abs(velocityX)>Math.abs(velocityY)){
            if(velocityX>0){
                    directionListener.onRight();
            }else{
                    directionListener.onLeft();
            }
        }else{
            if(velocityY>0){
                    directionListener.onDown();
            }else{                                  
                    directionListener.onUp();
            }
        }
        return super.fling(velocityX, velocityY, button);
    }

}

}

On the create() function of the LibGdx application, put this to activate gesture handling for your game:

Gdx.input.setInputProcessor(new SimpleDirectionGestureDetector(new SimpleDirectionGestureDetector.DirectionListener() {

@Override
public void onUp() {

}

@Override
public void onRight() {

}

@Override
public void onLeft() {

}

@Override
public void onDown() {

}
}));

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