PatternTableManager.java 文件源码

/**
 * Initializes the pattern table textures and pixmap.
 */
public void initialize() {
    //Allocate a pixmap big enough to accommodate both pattern tables.
    patternTablePixmap = new Pixmap(128, 256, Pixmap.Format.RGBA8888);
    //Set blending to none so we can rewrite the pixmap and draw it to the
    //pattern table texture when graphics are regenerated.
    patternTablePixmap.setBlending(Pixmap.Blending.None);

    //Allocate a pixmap the size of one tile for live CHR-RAM updates.
    patternPixmap = new Pixmap(8, 8, Pixmap.Format.RGBA8888);
    patternPixmap.setBlending(Pixmap.Blending.None);

    patternTableTexture = new Texture(patternTablePixmap, false);
    TextureRegion[][] textureRegions = TextureRegion.split(patternTableTexture, 8, 8);
    patternTableSprites = new Sprite[32][16];
    for(int row = 0; row < 32; row++) {
        for(int column = 0; column < 16; column++) {
            TextureRegion textureRegion = textureRegions[row][column];
            patternTableSprites[row][column] = new Sprite(textureRegion);
        }
    }
    initializeMonochromePalette();
}