Method updateLightmap

src/main/java/net/optifine/LightMap.java:22–101

(World world, float torchFlickerX, int[] lmColors, boolean nightvision)

    }

    public boolean updateLightmap(World world, float torchFlickerX, int[] lmColors, boolean nightvision)
    {
        if (this.lightMapRgb == null)
        {
            return false;
        }
        else
        {
            int i = this.lightMapRgb.getHeight();

            if (nightvision && i < 64)
            {
                return false;
            }
            else
            {
                int j = this.lightMapRgb.getWidth();

                if (j < 16)
                {
                    warn("Invalid lightmap width: " + j);
                    this.lightMapRgb = null;
                    return false;
                }
                else
                {
                    int k = 0;

                    if (nightvision)
                    {
                        k = j * 16 * 2;
                    }

                    float f = 1.1666666F * (world.getSunBrightness(1.0F) - 0.2F);

                    if (world.getLastLightningBolt() > 0)
                    {
                        f = 1.0F;
                    }

                    f = Config.limitTo1(f);
                    float f1 = f * (float)(j - 1);
                    float f2 = Config.limitTo1(torchFlickerX + 0.5F) * (float)(j - 1);
                    float f3 = Config.limitTo1(Config.getGameSettings().saturation);
                    boolean flag = f3 > 1.0E-4F;
                    float[][] afloat = this.lightMapRgb.getColorsRgb();
                    this.getLightMapColumn(afloat, f1, k, j, this.sunRgbs);
                    this.getLightMapColumn(afloat, f2, k + 16 * j, j, this.torchRgbs);
                    float[] afloat1 = new float[3];

                    for (int l = 0; l < 16; ++l)
                    {
                        for (int i1 = 0; i1 < 16; ++i1)
                        {
                            for (int j1 = 0; j1 < 3; ++j1)
                            {
                                float f4 = Config.limitTo1(this.sunRgbs[l][j1] + this.torchRgbs[i1][j1]);