碰撞后2秒如何渲染精灵 [英] How to render a sprite 2 seconds after a collision

问题描述

我想在碰撞后2秒钟绘制/渲染精灵.

I want to draw/render my sprite 2 seconds after a collision.

我该怎么做?

如果我这样做，则渲染器立即添加新的 ButtonOrange .

If i do in that way the render add a new ButtonOrange immediately.

@Override
public void render(SpriteBatch batch)
{
    relation.add(new ButtonOrange(coordinates,text);
    relation.get(0).update();
    relation.get(0).draw(batch);

    if(relation.get(0).collission() == true)
        relation.remove(0);
}

推荐答案

您可以使用临时计时器变量存储自碰撞以来经过的时间，如果该时间大于2秒，则绘制该精灵.

You can use a temporary timer variable to store time elapsed since collision and if its greater than 2 second, draw that sprite.

boolean flag = false;
float time = 0; //timer for 2 sec

@Override
public void render(SpriteBatch batch)
{
    if(body.collision == true)   //just a dummy code to check for collision
      flag = true;               //set flag to true if collided

    if(flag == true)
    {
      //keep track how much time has elapsed
      time += Gdx.graphics.getDeltaTime();     

      if(time > 2)           //if more than 2 sec
        sprite.draw(batch);       //draw sprite
    }

}

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