Question

我是Andengine的新手，我发现如果你想为一些ButtonSprites / Sprit使用一个BitmapTextureAtlas，你必须这样做

BitmapTextureAtlas texAtlas = new BitmapTextureAtlas(activity.getTextureManager(), 316, 1062, TextureOptions.NEAREST_PREMULTIPLYALPHA);

    for (int i = 0; i < 10; i++) {
        TextureRegion pistolActive = BitmapTextureAtlasTextureRegionFactory.createFromAsset(texAtlas, activity.getApplicationContext(), POWERUP_TEXTURE_PATH, 0, 0);
        pistolActive.set(0, 0, TILE_WIDTH, TILE_HEIGHT);

        TextureRegion pistolUnactive = BitmapTextureAtlasTextureRegionFactory.createFromAsset(texAtlas, activity.getApplicationContext(), POWERUP_TEXTURE_PATH, 0, 0);
        pistolUnactive.set(0, TILE_HEIGHT, TILE_WIDTH, TILE_HEIGHT);

        TextureRegion pistolDeactive = BitmapTextureAtlasTextureRegionFactory.createFromAsset(texAtlas, activity.getApplicationContext(), POWERUP_TEXTURE_PATH, 0, 0);
        pistolDeactive.set(0, TILE_HEIGHT * 2, TILE_WIDTH, TILE_HEIGHT);
        texAtlas.load();

        ButtonSprite button = new ButtonSprite(0, 0, pistolActive, pistolUnactive, pistolDeactive, activity.getVertexBufferObjectManager(), new ButtonSprite.OnClickListener() {
            @Override
            public void onClick(final ButtonSprite buttonSprite, float v, float v2) {
            }
        });
    }

但现在我检查一下，如果你在循环之前放置texAtlas.load()，它也会起作用。但最佳做法是什么？

Answer 1

BitmapTextureAtlas texAtlas = new BitmapTextureAtlas(activity.getTextureManager(), 316, 1062, TextureOptions.NEAREST_PREMULTIPLYALPHA);
        TextureRegion pistolActive = BitmapTextureAtlasTextureRegionFactory.createFromAsset(texAtlas, activity.getApplicationContext(), POWERUP_TEXTURE_PATH, 0, 0);
        pistolActive.set(0, 0, TILE_WIDTH, TILE_HEIGHT);

        TextureRegion pistolUnactive = BitmapTextureAtlasTextureRegionFactory.createFromAsset(texAtlas, activity.getApplicationContext(), POWERUP_TEXTURE_PATH, 0, 0);
        pistolUnactive.set(0, TILE_HEIGHT, TILE_WIDTH, TILE_HEIGHT);

        TextureRegion pistolDeactive = BitmapTextureAtlasTextureRegionFactory.createFromAsset(texAtlas, activity.getApplicationContext(), POWERUP_TEXTURE_PATH, 0, 0);
        pistolDeactive.set(0, TILE_HEIGHT * 2, TILE_WIDTH, TILE_HEIGHT);
        texAtlas.load();
        for (int i = 0; i < 10; i++) {
            ButtonSprite button = new ButtonSprite(0, 0, pistolActive, pistolUnactive, pistolDeactive, activity.getVertexBufferObjectManager(), new ButtonSprite.OnClickListener() {
                @Override
                public void onClick(final ButtonSprite buttonSprite, float v, float v2) {
                }
            });
        }

无需多次创建纹理区域。这样做。

实际上如果你以这种方式加载，你会遇到一些UI问题。所以我的建议是使用不同的纹理来加载不同的精灵

如果你想避免加载问题，你可以去Sprite表（例如.. TexturePacker）

Andengine GLES2 - 为几个TextureRegion加载一个BitmapTextureAtlas的正确方法

1 个答案: