Pan位置libGDX

Question

我在比赛中的控制能力有问题。

这是我的main_class：

public class main_class extends ApplicationAdapter implements GestureListener{
    SpriteBatch batch;
    Texture img;
    int screen_height;
    int screen_width;

@Override
public void create () {
    batch = new SpriteBatch();
    img = new Texture("player.png");
    screen_height = Gdx.graphics.getHeight();
    screen_width = Gdx.graphics.getWidth();

    GestureDetector gestureDetector = new GestureDetector(this);
    Gdx.input.setInputProcessor(gestureDetectore); // Here is error (gestureDetector cannot be resolved to a variable)

}

@Override
public void render () {
    Gdx.gl.glClearColor(1, 1, 1, 1);
    Gdx.gl.glClear(GL20.GL_COLOR_BUFFER_BIT);
    batch.begin();
    batch.draw(img, screen_width / 3, screen_height / 2);
    batch.end();
}

@Override
public void resize(int width, int height) {

}

@Override
public void pause() {

}

@Override
public void resume() {

}

@Override
public void dispose() {

}

@Override
public boolean touchDown(float x, float y, int pointer, int button) {
    // TODO Auto-generated method stub
    return false;
}

@Override
public boolean tap(float x, float y, int count, int button) {
    // TODO Auto-generated method stub
    return false;
}

@Override
public boolean longPress(float x, float y) {
    // TODO Auto-generated method stub
    return false;
}

@Override
public boolean fling(float velocityX, float velocityY, int button) {
    // TODO Auto-generated method stub
    return false;
}

@Override
public boolean pan(float x, float y, float deltaX, float deltaY) {

    return false;
}

@Override
public boolean panStop(float x, float y, int pointer, int button) {
    // TODO Auto-generated method stub
    return false;
}

@Override
public boolean zoom(float initialDistance, float distance) {
    // TODO Auto-generated method stub
    return false;
}

@Override
public boolean pinch(Vector2 initialPointer1, Vector2 initialPointer2,
        Vector2 pointer1, Vector2 pointer2) {
    // TODO Auto-generated method stub
    return false;
}
}

我想要改变球员的位置(y)的潘位置(y)。我想通过上下滑动屏幕来控制玩家。谢谢你的回应。

Answer 1

您实际上没有初始化您的GestureDetector。让我们初始化它，然后将输入处理器设置为：

Gdx.input.setInputProcessor();

您应该实现GestureListener

public class main_class extends ApplicationAdapter implements GestureListener {

所以在create方法中做这些事情。

public void create () {
    ..
    GestureDetector gestureDetector = new GestureDetector(this);
    Gdx.input.setInputProcessor(gestureDetector);
}