java - 使用TextureAtlas的LibGdx动画

Question

我正在尝试加载爆炸动画。动画由 16 帧组成，全部保存在 Explosion.png 文件中。在我的游戏中，所有图像都存储在纹理图集包中。

所以首先我从 Assets.java 类中得到了我需要的区域

public class Explosion {
    public final AtlasRegion explosion;
    public Explosion (TextureAtlas atlas){
        explosion = atlas.findRegion(Constants.EXPLOSION);
    }
}

然后在我将创建爆炸的类中，我有以下代码:

public Particles(Vector2 position){
    this.position = position;
    startTime = TimeUtils.nanoTime();

    Array<TextureRegion> explosionAnimationTexture = new Array<TextureRegion>();

    TextureRegion region = Assets.instance.explosion.explosion;
    Texture explosionTexture = region.getTexture();

    int ROW = 4;  // rows of sprite sheet image
    int COLUMN = 4;
    TextureRegion[][] tmp = TextureRegion.split(explosionTexture, explosionTexture.getWidth() / COLUMN, explosionTexture.getHeight() / ROW);
    TextureRegion[] frames = new TextureRegion[ROW * COLUMN];
    int elementIndex = 0;
    for (int i = 0; i < ROW; i++) {
        for (int j = 0; j < COLUMN; j++) {
            explosionAnimationTexture.add(tmp[i][j]);
            frames[elementIndex++] = tmp[i][j];
        }
    }

    explosion = new Animation(EXPLOSION_FRAME_DURATION,explosionAnimationTexture , Animation.PlayMode.LOOP_PINGPONG);
}

我使用 4x4，因为我有 16 帧。在渲染方法中我得到以下内容:

public void render(SpriteBatch batch){
    float elapsedTime = MathUtils.nanoToSec * (TimeUtils.nanoTime() - startTime);
    TextureRegion walkLoopTexture = explosion.getKeyFrame(elapsedTime);

    batch.draw(
            walkLoopTexture.getTexture(),
            position.x,
            position.y,
            0,
            0,
            walkLoopTexture.getRegionWidth(),
            walkLoopTexture.getRegionHeight(),
            0.3f,
            0.3f,
            0,
            walkLoopTexture.getRegionX(),
            walkLoopTexture.getRegionY(),
            walkLoopTexture.getRegionWidth(),
            walkLoopTexture.getRegionHeight(),
            false,
            false);

}

动画正在运行，但是图像是从整个图集文件加载的，而不仅仅是步骤 1 中指定的 Explosion.png。

Answer 1

Particles 类中的代码:

TextureRegion region = Assets.instance.explosion.explosion;
TextureRegion[][] tmp = TextureRegion.split(explosionTexture, explosionTexture.getWidth() / COLUMN, explosionTexture.getHeight() / ROW);

替换为:

TextureRegion[][] tmp = region.split(region.getRegionWidth()/COLUMN,region.getRegionHeight()/ROW);

<小时/>

和

使用textureRegion而不是他的texture绘制您的Animation，因此选择SpriteBatch的适当方法签名来绘制textureRegion .