LIBGDX - 如何让乒乓球比赛没有跳跃?

时间:2018-01-18 23:35:52

标签: java android libgdx android-studio-3.0 pong

我正在制作Pong游戏,当我点击屏幕时,划桨跳到我的光标点。我想要我需要拖动光标移动他,而不像正常的Pong游戏那样跳跃。我怎么能这样做?

这是我的Paddle课程:

public class Paddle {

private Vector3 position;
private int width, height;
private Texture texture;

public Paddle(int x, int y, int width, int height){
    this.width = width;
    this.height = height;
    createTexture(width,height);
    position = new Vector3(x, y, 0);
}

private void createTexture(int width, int height) {
    Pixmap pixmap = new Pixmap(width, height, Pixmap.Format.RGBA8888);
    pixmap.setColor(Color.BLACK);
    pixmap.fillRectangle(0, 0, width, height);
    texture = new Texture(pixmap);
    pixmap.dispose();
}

public void update(int y){
    position.add(0, y - position.y,0);
    position.y = y;
    position.set(position.x, HeadGuns.HEIGHT - position.y, position.z);
}

public void draw(SpriteBatch sb){
    sb.draw(texture, position.x, position.y, width,height);
}

这是我的PlayState课程:

public class PlayState extends State {

private Paddle myPaddle;

public PlayState(GameStateManager gsm) {
    super(gsm);
    myPaddle = new Paddle(25, HeadGuns.HEIGHT/2, 25, 150);
}

@Override
public void handleInput() {
    if (Gdx.input.isTouched()){
        //when I touched the screen
        myPaddle.update(Gdx.input.getY());
    }
}

@Override
public void update(float dt) {
    handleInput();
}

@Override
public void render(SpriteBatch sb) {
    sb.begin();
    myPaddle.draw(sb);
    sb.end();
}

@Override
public void dispose() {

}

1 个答案:

答案 0 :(得分:1)

您正在阅读触摸位置:

Gdx.input.getY()

并直接使用它来设置打击垫位置 - 你不能这样做。

您应该使用InputLister来获取事件。

首先你应该听touchDown,看看是否有用户触摸你的打击垫(比较触摸坐标与打击垫坐标)

然后,对于拖动,您应该使用touchDragged()事件...来在拖动发生时更新打击垫位置,但仅当touchDown检测到触摸时:

https://libgdx.badlogicgames.com/nightlies/docs/api/com/badlogic/gdx/scenes/scene2d/InputListener.html#touchDragged-com.badlogic.gdx.scenes.scene2d.InputEvent-float-float-int-