package net.minecraft.src;

import java.awt.image.BufferedImage;
import java.io.FileNotFoundException;
import java.io.IOException;
import java.io.InputStream;
import java.util.Arrays;
import java.util.HashMap;
import java.util.Iterator;
import java.util.Properties;
import java.util.Random;
import java.util.Set;
import javax.imageio.ImageIO;
import net.minecraft.block.Block;
import net.minecraft.block.BlockStem;
import net.minecraft.block.material.Material;
import net.minecraft.client.Minecraft;
import net.minecraft.client.multiplayer.WorldClient;
import net.minecraft.client.particle.EntityFX;
import net.minecraft.client.renderer.texture.TextureUtil;
import net.minecraft.entity.EntityLivingBase;
import net.minecraft.init.Blocks;
import net.minecraft.util.MathHelper;
import net.minecraft.util.ResourceLocation;
import net.minecraft.util.Vec3;
import net.minecraft.world.ColorizerFoliage;
import net.minecraft.world.IBlockAccess;
import net.minecraft.world.World;
import net.minecraft.world.biome.BiomeGenBase;

public class CustomColorizer
{
    private static int[] grassColors = null;
    private static int[] waterColors = null;
    private static int[] foliageColors = null;
    private static int[] foliagePineColors = null;
    private static int[] foliageBirchColors = null;
    private static int[] swampFoliageColors = null;
    private static int[] swampGrassColors = null;
    private static int[][] blockPalettes = (int[][])null;
    private static int[][] paletteColors = (int[][])null;
    private static int[] skyColors = null;
    private static int[] fogColors = null;
    private static int[] underwaterColors = null;
    private static float[][][] lightMapsColorsRgb = (float[][][])null;
    private static int[] lightMapsHeight = null;
    private static float[][] sunRgbs = new float[16][3];
    private static float[][] torchRgbs = new float[16][3];
    private static int[] redstoneColors = null;
    private static int[] stemColors = null;
    private static int[] myceliumParticleColors = null;
    private static boolean useDefaultColorMultiplier = true;
    private static int particleWaterColor = -1;
    private static int particlePortalColor = -1;
    private static int lilyPadColor = -1;
    private static Vec3 fogColorNether = null;
    private static Vec3 fogColorEnd = null;
    private static Vec3 skyColorEnd = null;
    private static final int TYPE_NONE = 0;
    private static final int TYPE_GRASS = 1;
    private static final int TYPE_FOLIAGE = 2;
    private static Random random = new Random();

    public static void update()
    {
        grassColors = null;
        waterColors = null;
        foliageColors = null;
        foliageBirchColors = null;
        foliagePineColors = null;
        swampGrassColors = null;
        swampFoliageColors = null;
        skyColors = null;
        fogColors = null;
        underwaterColors = null;
        redstoneColors = null;
        stemColors = null;
        myceliumParticleColors = null;
        lightMapsColorsRgb = (float[][][])null;
        lightMapsHeight = null;
        lilyPadColor = -1;
        particleWaterColor = -1;
        particlePortalColor = -1;
        fogColorNether = null;
        fogColorEnd = null;
        skyColorEnd = null;
        blockPalettes = (int[][])null;
        paletteColors = (int[][])null;
        useDefaultColorMultiplier = true;
        String mcpColormap = "mcpatcher/colormap/";
        grassColors = getCustomColors("textures/colormap/grass.png", 65536);
        foliageColors = getCustomColors("textures/colormap/foliage.png", 65536);
        String[] waterPaths = new String[] {"water.png", "watercolorX.png"};
        waterColors = getCustomColors(mcpColormap, waterPaths, 65536);

        if (Config.isCustomColors())
        {
            String[] pinePaths = new String[] {"pine.png", "pinecolor.png"};
            foliagePineColors = getCustomColors(mcpColormap, pinePaths, 65536);
            String[] birchPaths = new String[] {"birch.png", "birchcolor.png"};
            foliageBirchColors = getCustomColors(mcpColormap, birchPaths, 65536);
            String[] swampGrassPaths = new String[] {"swampgrass.png", "swampgrasscolor.png"};
            swampGrassColors = getCustomColors(mcpColormap, swampGrassPaths, 65536);
            String[] swampFoliagePaths = new String[] {"swampfoliage.png", "swampfoliagecolor.png"};
            swampFoliageColors = getCustomColors(mcpColormap, swampFoliagePaths, 65536);
            String[] sky0Paths = new String[] {"sky0.png", "skycolor0.png"};
            skyColors = getCustomColors(mcpColormap, sky0Paths, 65536);
            String[] fog0Paths = new String[] {"fog0.png", "fogcolor0.png"};
            fogColors = getCustomColors(mcpColormap, fog0Paths, 65536);
            String[] underwaterPaths = new String[] {"underwater.png", "underwatercolor.png"};
            underwaterColors = getCustomColors(mcpColormap, underwaterPaths, 65536);
            String[] redstonePaths = new String[] {"redstone.png", "redstonecolor.png"};
            redstoneColors = getCustomColors(mcpColormap, redstonePaths, 16);
            String[] stemPaths = new String[] {"stem.png", "stemcolor.png"};
            stemColors = getCustomColors(mcpColormap, stemPaths, 8);
            String[] myceliumPaths = new String[] {"myceliumparticle.png", "myceliumparticlecolor.png"};
            myceliumParticleColors = getCustomColors(mcpColormap, myceliumPaths, -1);
            int[][] lightMapsColors = new int[3][];
            lightMapsColorsRgb = new float[3][][];
            lightMapsHeight = new int[3];

            for (int i = 0; i < lightMapsColors.length; ++i)
            {
                String path = "mcpatcher/lightmap/world" + (i - 1) + ".png";
                lightMapsColors[i] = getCustomColors(path, -1);

                if (lightMapsColors[i] != null)
                {
                    lightMapsColorsRgb[i] = toRgb(lightMapsColors[i]);
                }

                lightMapsHeight[i] = getTextureHeight(path, 32);
            }

            readColorProperties("mcpatcher/color.properties");
            updateUseDefaultColorMultiplier();
        }
    }

    private static int getTextureHeight(String path, int defHeight)
    {
        try
        {
            InputStream e = Config.getResourceStream(new ResourceLocation(path));

            if (e == null)
            {
                return defHeight;
            }
            else
            {
                BufferedImage bi = ImageIO.read(e);
                return bi == null ? defHeight : bi.getHeight();
            }
        }
        catch (IOException var4)
        {
            return defHeight;
        }
    }

    private static float[][] toRgb(int[] cols)
    {
        float[][] colsRgb = new float[cols.length][3];

        for (int i = 0; i < cols.length; ++i)
        {
            int col = cols[i];
            float rf = (float)(col >> 16 & 255) / 255.0F;
            float gf = (float)(col >> 8 & 255) / 255.0F;
            float bf = (float)(col & 255) / 255.0F;
            float[] colRgb = colsRgb[i];
            colRgb[0] = rf;
            colRgb[1] = gf;
            colRgb[2] = bf;
        }

        return colsRgb;
    }

    private static void readColorProperties(String fileName)
    {
        try
        {
            ResourceLocation e = new ResourceLocation(fileName);
            InputStream in = Config.getResourceStream(e);

            if (in == null)
            {
                return;
            }

            Config.log("Loading " + fileName);
            Properties props = new Properties();
            props.load(in);
            lilyPadColor = readColor(props, "lilypad");
            particleWaterColor = readColor(props, new String[] {"particle.water", "drop.water"});
            particlePortalColor = readColor(props, "particle.portal");
            fogColorNether = readColorVec3(props, "fog.nether");
            fogColorEnd = readColorVec3(props, "fog.end");
            skyColorEnd = readColorVec3(props, "sky.end");
            readCustomPalettes(props, fileName);
        }
        catch (FileNotFoundException var4)
        {
            return;
        }
        catch (IOException var5)
        {
            var5.printStackTrace();
        }
    }

    private static void readCustomPalettes(Properties props, String fileName)
    {
        blockPalettes = new int[256][1];

        for (int palettePrefix = 0; palettePrefix < 256; ++palettePrefix)
        {
            blockPalettes[palettePrefix][0] = -1;
        }

        String var18 = "palette.block.";
        HashMap map = new HashMap();
        Set keys = props.keySet();
        Iterator propNames = keys.iterator();
        String name;

        while (propNames.hasNext())
        {
            String i = (String)propNames.next();
            name = props.getProperty(i);

            if (i.startsWith(var18))
            {
                map.put(i, name);
            }
        }

        String[] var19 = (String[])((String[])map.keySet().toArray(new String[map.size()]));
        paletteColors = new int[var19.length][];

        for (int var20 = 0; var20 < var19.length; ++var20)
        {
            name = var19[var20];
            String value = props.getProperty(name);
            Config.log("Block palette: " + name + " = " + value);
            String path = name.substring(var18.length());
            String basePath = TextureUtils.getBasePath(fileName);
            path = TextureUtils.fixResourcePath(path, basePath);
            int[] colors = getCustomColors(path, 65536);
            paletteColors[var20] = colors;
            String[] indexStrs = Config.tokenize(value, " ,;");

            for (int ix = 0; ix < indexStrs.length; ++ix)
            {
                String blockStr = indexStrs[ix];
                int metadata = -1;

                if (blockStr.contains(":"))
                {
                    String[] blockIndex = Config.tokenize(blockStr, ":");
                    blockStr = blockIndex[0];
                    String metadataStr = blockIndex[1];
                    metadata = Config.parseInt(metadataStr, -1);

                    if (metadata < 0 || metadata > 15)
                    {
                        Config.log("Invalid block metadata: " + blockStr + " in palette: " + name);
                        continue;
                    }
                }

                int var21 = Config.parseInt(blockStr, -1);

                if (var21 >= 0 && var21 <= 255)
                {
                    if (var21 != Block.getIdFromBlock(Blocks.grass) && var21 != Block.getIdFromBlock(Blocks.tallgrass) && var21 != Block.getIdFromBlock(Blocks.leaves) && var21 != Block.getIdFromBlock(Blocks.vine))
                    {
                        if (metadata == -1)
                        {
                            blockPalettes[var21][0] = var20;
                        }
                        else
                        {
                            if (blockPalettes[var21].length < 16)
                            {
                                blockPalettes[var21] = new int[16];
                                Arrays.fill(blockPalettes[var21], -1);
                            }

                            blockPalettes[var21][metadata] = var20;
                        }
                    }
                }
                else
                {
                    Config.log("Invalid block index: " + var21 + " in palette: " + name);
                }
            }
        }
    }

    private static int readColor(Properties props, String[] names)
    {
        for (int i = 0; i < names.length; ++i)
        {
            String name = names[i];
            int col = readColor(props, name);

            if (col >= 0)
            {
                return col;
            }
        }

        return -1;
    }

    private static int readColor(Properties props, String name)
    {
        String str = props.getProperty(name);

        if (str == null)
        {
            return -1;
        }
        else
        {
            try
            {
                int e = Integer.parseInt(str, 16) & 16777215;
                Config.log("Custom color: " + name + " = " + str);
                return e;
            }
            catch (NumberFormatException var4)
            {
                Config.log("Invalid custom color: " + name + " = " + str);
                return -1;
            }
        }
    }

    private static Vec3 readColorVec3(Properties props, String name)
    {
        int col = readColor(props, name);

        if (col < 0)
        {
            return null;
        }
        else
        {
            int red = col >> 16 & 255;
            int green = col >> 8 & 255;
            int blue = col & 255;
            float redF = (float)red / 255.0F;
            float greenF = (float)green / 255.0F;
            float blueF = (float)blue / 255.0F;
            return Vec3.createVectorHelper((double)redF, (double)greenF, (double)blueF);
        }
    }

    private static int[] getCustomColors(String basePath, String[] paths, int length)
    {
        for (int i = 0; i < paths.length; ++i)
        {
            String path = paths[i];
            path = basePath + path;
            int[] cols = getCustomColors(path, length);

            if (cols != null)
            {
                return cols;
            }
        }

        return null;
    }

    private static int[] getCustomColors(String path, int length)
    {
        try
        {
            ResourceLocation e = new ResourceLocation(path);
            InputStream in = Config.getResourceStream(e);

            if (in == null)
            {
                return null;
            }
            else
            {
                int[] colors = TextureUtil.readImageData(Config.getResourceManager(), e);

                if (colors == null)
                {
                    return null;
                }
                else if (length > 0 && colors.length != length)
                {
                    Config.log("Invalid custom colors length: " + colors.length + ", path: " + path);
                    return null;
                }
                else
                {
                    Config.log("Loading custom colors: " + path);
                    return colors;
                }
            }
        }
        catch (FileNotFoundException var5)
        {
            return null;
        }
        catch (IOException var6)
        {
            var6.printStackTrace();
            return null;
        }
    }

    public static void updateUseDefaultColorMultiplier()
    {
        useDefaultColorMultiplier = foliageBirchColors == null && foliagePineColors == null && swampGrassColors == null && swampFoliageColors == null && blockPalettes == null && Config.isSwampColors() && Config.isSmoothBiomes();
    }

    public static int getColorMultiplier(Block block, IBlockAccess blockAccess, int x, int y, int z)
    {
        if (useDefaultColorMultiplier)
        {
            return block.colorMultiplier(blockAccess, x, y, z);
        }
        else
        {
            int[] colors = null;
            int[] swampColors = null;
            int metadata;

            if (blockPalettes != null)
            {
                int useSwampColors = Block.getIdFromBlock(block);

                if (useSwampColors >= 0 && useSwampColors < 256)
                {
                    int[] smoothColors = blockPalettes[useSwampColors];
                    boolean type = true;
                    int type1;

                    if (smoothColors.length > 1)
                    {
                        metadata = blockAccess.getBlockMetadata(x, y, z);
                        type1 = smoothColors[metadata];
                    }
                    else
                    {
                        type1 = smoothColors[0];
                    }

                    if (type1 >= 0)
                    {
                        colors = paletteColors[type1];
                    }
                }

                if (colors != null)
                {
                    if (Config.isSmoothBiomes())
                    {
                        return getSmoothColorMultiplier(block, blockAccess, x, y, z, colors, colors, 0, 0);
                    }

                    return getCustomColor(colors, blockAccess, x, y, z);
                }
            }

            boolean useSwampColors1 = Config.isSwampColors();
            boolean smoothColors1 = false;
            byte type2 = 0;
            metadata = 0;

            if (block != Blocks.grass && block != Blocks.tallgrass)
            {
                if (block == Blocks.leaves)
                {
                    type2 = 2;
                    smoothColors1 = Config.isSmoothBiomes();
                    metadata = blockAccess.getBlockMetadata(x, y, z);

                    if ((metadata & 3) == 1)
                    {
                        colors = foliagePineColors;
                    }
                    else if ((metadata & 3) == 2)
                    {
                        colors = foliageBirchColors;
                    }
                    else
                    {
                        colors = foliageColors;

                        if (useSwampColors1)
                        {
                            swampColors = swampFoliageColors;
                        }
                        else
                        {
                            swampColors = colors;
                        }
                    }
                }
                else if (block == Blocks.vine)
                {
                    type2 = 2;
                    smoothColors1 = Config.isSmoothBiomes();
                    colors = foliageColors;

                    if (useSwampColors1)
                    {
                        swampColors = swampFoliageColors;
                    }
                    else
                    {
                        swampColors = colors;
                    }
                }
            }
            else
            {
                type2 = 1;
                smoothColors1 = Config.isSmoothBiomes();
                colors = grassColors;

                if (useSwampColors1)
                {
                    swampColors = swampGrassColors;
                }
                else
                {
                    swampColors = colors;
                }
            }

            if (smoothColors1)
            {
                return getSmoothColorMultiplier(block, blockAccess, x, y, z, colors, swampColors, type2, metadata);
            }
            else
            {
                if (swampColors != colors && blockAccess.getBiomeGenForCoords(x, z) == BiomeGenBase.swampland)
                {
                    colors = swampColors;
                }

                return colors != null ? getCustomColor(colors, blockAccess, x, y, z) : block.colorMultiplier(blockAccess, x, y, z);
            }
        }
    }

    private static int getSmoothColorMultiplier(Block block, IBlockAccess blockAccess, int x, int y, int z, int[] colors, int[] swampColors, int type, int metadata)
    {
        int sumRed = 0;
        int sumGreen = 0;
        int sumBlue = 0;
        int r;
        int g;

        for (r = x - 1; r <= x + 1; ++r)
        {
            for (g = z - 1; g <= z + 1; ++g)
            {
                int[] b = colors;

                if (swampColors != colors && blockAccess.getBiomeGenForCoords(r, g) == BiomeGenBase.swampland)
                {
                    b = swampColors;
                }

                boolean col = false;
                int var17;

                if (b == null)
                {
                    switch (type)
                    {
                        case 1:
                            var17 = blockAccess.getBiomeGenForCoords(r, g).getBiomeGrassColor(x, y, z);
                            break;

                        case 2:
                            if ((metadata & 3) == 1)
                            {
                                var17 = ColorizerFoliage.getFoliageColorPine();
                            }
                            else if ((metadata & 3) == 2)
                            {
                                var17 = ColorizerFoliage.getFoliageColorBirch();
                            }
                            else
                            {
                                var17 = blockAccess.getBiomeGenForCoords(r, g).getBiomeFoliageColor(x, y, z);
                            }

                            break;

                        default:
                            var17 = block.colorMultiplier(blockAccess, r, y, g);
                    }
                }
                else
                {
                    var17 = getCustomColor(b, blockAccess, r, y, g);
                }

                sumRed += var17 >> 16 & 255;
                sumGreen += var17 >> 8 & 255;
                sumBlue += var17 & 255;
            }
        }

        r = sumRed / 9;
        g = sumGreen / 9;
        int var16 = sumBlue / 9;
        return r << 16 | g << 8 | var16;
    }

    public static int getFluidColor(Block block, IBlockAccess blockAccess, int x, int y, int z)
    {
        return block.getMaterial() != Material.water ? block.colorMultiplier(blockAccess, x, y, z) : (waterColors != null ? (Config.isSmoothBiomes() ? getSmoothColor(waterColors, blockAccess, (double)x, (double)y, (double)z, 3, 1) : getCustomColor(waterColors, blockAccess, x, y, z)) : (!Config.isSwampColors() ? 16777215 : block.colorMultiplier(blockAccess, x, y, z)));
    }

    private static int getCustomColor(int[] colors, IBlockAccess blockAccess, int x, int y, int z)
    {
        BiomeGenBase bgb = blockAccess.getBiomeGenForCoords(x, z);
        double temperature = (double)MathHelper.clamp_float(bgb.getFloatTemperature(x, y, z), 0.0F, 1.0F);
        double rainfall = (double)MathHelper.clamp_float(bgb.getFloatRainfall(), 0.0F, 1.0F);
        rainfall *= temperature;
        int cx = (int)((1.0D - temperature) * 255.0D);
        int cy = (int)((1.0D - rainfall) * 255.0D);
        return colors[cy << 8 | cx] & 16777215;
    }

    public static void updatePortalFX(EntityFX fx)
    {
        if (particlePortalColor >= 0)
        {
            int col = particlePortalColor;
            int red = col >> 16 & 255;
            int green = col >> 8 & 255;
            int blue = col & 255;
            float redF = (float)red / 255.0F;
            float greenF = (float)green / 255.0F;
            float blueF = (float)blue / 255.0F;
            fx.setRBGColorF(redF, greenF, blueF);
        }
    }

    public static void updateMyceliumFX(EntityFX fx)
    {
        if (myceliumParticleColors != null)
        {
            int col = myceliumParticleColors[random.nextInt(myceliumParticleColors.length)];
            int red = col >> 16 & 255;
            int green = col >> 8 & 255;
            int blue = col & 255;
            float redF = (float)red / 255.0F;
            float greenF = (float)green / 255.0F;
            float blueF = (float)blue / 255.0F;
            fx.setRBGColorF(redF, greenF, blueF);
        }
    }

    public static void updateReddustFX(EntityFX fx, IBlockAccess blockAccess, double x, double y, double z)
    {
        if (redstoneColors != null)
        {
            int level = blockAccess.getBlockMetadata((int)x, (int)y, (int)z);
            int col = getRedstoneColor(level);

            if (col != -1)
            {
                int red = col >> 16 & 255;
                int green = col >> 8 & 255;
                int blue = col & 255;
                float redF = (float)red / 255.0F;
                float greenF = (float)green / 255.0F;
                float blueF = (float)blue / 255.0F;
                fx.setRBGColorF(redF, greenF, blueF);
            }
        }
    }

    public static int getRedstoneColor(int level)
    {
        return redstoneColors == null ? -1 : (level >= 0 && level <= 15 ? redstoneColors[level] & 16777215 : -1);
    }

    public static void updateWaterFX(EntityFX fx, IBlockAccess blockAccess)
    {
        if (waterColors != null)
        {
            int x = (int)fx.posX;
            int y = (int)fx.posY;
            int z = (int)fx.posZ;
            int col = getFluidColor(Blocks.water, blockAccess, x, y, z);
            int red = col >> 16 & 255;
            int green = col >> 8 & 255;
            int blue = col & 255;
            float redF = (float)red / 255.0F;
            float greenF = (float)green / 255.0F;
            float blueF = (float)blue / 255.0F;

            if (particleWaterColor >= 0)
            {
                int redDrop = particleWaterColor >> 16 & 255;
                int greenDrop = particleWaterColor >> 8 & 255;
                int blueDrop = particleWaterColor & 255;
                redF *= (float)redDrop / 255.0F;
                greenF *= (float)greenDrop / 255.0F;
                blueF *= (float)blueDrop / 255.0F;
            }

            fx.setRBGColorF(redF, greenF, blueF);
        }
    }

    public static int getLilypadColor()
    {
        return lilyPadColor < 0 ? Blocks.waterlily.getBlockColor() : lilyPadColor;
    }

    public static Vec3 getFogColorNether(Vec3 col)
    {
        return fogColorNether == null ? col : fogColorNether;
    }

    public static Vec3 getFogColorEnd(Vec3 col)
    {
        return fogColorEnd == null ? col : fogColorEnd;
    }

    public static Vec3 getSkyColorEnd(Vec3 col)
    {
        return skyColorEnd == null ? col : skyColorEnd;
    }

    public static Vec3 getSkyColor(Vec3 skyColor3d, IBlockAccess blockAccess, double x, double y, double z)
    {
        if (skyColors == null)
        {
            return skyColor3d;
        }
        else
        {
            int col = getSmoothColor(skyColors, blockAccess, x, y, z, 10, 1);
            int red = col >> 16 & 255;
            int green = col >> 8 & 255;
            int blue = col & 255;
            float redF = (float)red / 255.0F;
            float greenF = (float)green / 255.0F;
            float blueF = (float)blue / 255.0F;
            float cRed = (float)skyColor3d.xCoord / 0.5F;
            float cGreen = (float)skyColor3d.yCoord / 0.66275F;
            float cBlue = (float)skyColor3d.zCoord;
            redF *= cRed;
            greenF *= cGreen;
            blueF *= cBlue;
            return Vec3.createVectorHelper((double)redF, (double)greenF, (double)blueF);
        }
    }

    public static Vec3 getFogColor(Vec3 fogColor3d, IBlockAccess blockAccess, double x, double y, double z)
    {
        if (fogColors == null)
        {
            return fogColor3d;
        }
        else
        {
            int col = getSmoothColor(fogColors, blockAccess, x, y, z, 10, 1);
            int red = col >> 16 & 255;
            int green = col >> 8 & 255;
            int blue = col & 255;
            float redF = (float)red / 255.0F;
            float greenF = (float)green / 255.0F;
            float blueF = (float)blue / 255.0F;
            float cRed = (float)fogColor3d.xCoord / 0.753F;
            float cGreen = (float)fogColor3d.yCoord / 0.8471F;
            float cBlue = (float)fogColor3d.zCoord;
            redF *= cRed;
            greenF *= cGreen;
            blueF *= cBlue;
            return Vec3.createVectorHelper((double)redF, (double)greenF, (double)blueF);
        }
    }

    public static Vec3 getUnderwaterColor(IBlockAccess blockAccess, double x, double y, double z)
    {
        if (underwaterColors == null)
        {
            return null;
        }
        else
        {
            int col = getSmoothColor(underwaterColors, blockAccess, x, y, z, 10, 1);
            int red = col >> 16 & 255;
            int green = col >> 8 & 255;
            int blue = col & 255;
            float redF = (float)red / 255.0F;
            float greenF = (float)green / 255.0F;
            float blueF = (float)blue / 255.0F;
            return Vec3.createVectorHelper((double)redF, (double)greenF, (double)blueF);
        }
    }

    public static int getSmoothColor(int[] colors, IBlockAccess blockAccess, double x, double y, double z, int samples, int step)
    {
        if (colors == null)
        {
            return -1;
        }
        else
        {
            int x0 = (int)Math.floor(x);
            int y0 = (int)Math.floor(y);
            int z0 = (int)Math.floor(z);
            int n = samples * step / 2;
            int sumRed = 0;
            int sumGreen = 0;
            int sumBlue = 0;
            int count = 0;
            int g;
            int r;
            int b;

            for (r = x0 - n; r <= x0 + n; r += step)
            {
                for (g = z0 - n; g <= z0 + n; g += step)
                {
                    b = getCustomColor(colors, blockAccess, r, y0, g);
                    sumRed += b >> 16 & 255;
                    sumGreen += b >> 8 & 255;
                    sumBlue += b & 255;
                    ++count;
                }
            }

            r = sumRed / count;
            g = sumGreen / count;
            b = sumBlue / count;
            return r << 16 | g << 8 | b;
        }
    }

    public static int mixColors(int c1, int c2, float w1)
    {
        if (w1 <= 0.0F)
        {
            return c2;
        }
        else if (w1 >= 1.0F)
        {
            return c1;
        }
        else
        {
            float w2 = 1.0F - w1;
            int r1 = c1 >> 16 & 255;
            int g1 = c1 >> 8 & 255;
            int b1 = c1 & 255;
            int r2 = c2 >> 16 & 255;
            int g2 = c2 >> 8 & 255;
            int b2 = c2 & 255;
            int r = (int)((float)r1 * w1 + (float)r2 * w2);
            int g = (int)((float)g1 * w1 + (float)g2 * w2);
            int b = (int)((float)b1 * w1 + (float)b2 * w2);
            return r << 16 | g << 8 | b;
        }
    }

    private static int averageColor(int c1, int c2)
    {
        int r1 = c1 >> 16 & 255;
        int g1 = c1 >> 8 & 255;
        int b1 = c1 & 255;
        int r2 = c2 >> 16 & 255;
        int g2 = c2 >> 8 & 255;
        int b2 = c2 & 255;
        int r = (r1 + r2) / 2;
        int g = (g1 + g2) / 2;
        int b = (b1 + b2) / 2;
        return r << 16 | g << 8 | b;
    }

    public static int getStemColorMultiplier(BlockStem blockStem, IBlockAccess blockAccess, int x, int y, int z)
    {
        if (stemColors == null)
        {
            return blockStem.colorMultiplier(blockAccess, x, y, z);
        }
        else
        {
            int level = blockAccess.getBlockMetadata(x, y, z);

            if (level < 0)
            {
                level = 0;
            }

            if (level >= stemColors.length)
            {
                level = stemColors.length - 1;
            }

            return stemColors[level];
        }
    }

    public static boolean updateLightmap(World world, float torchFlickerX, int[] lmColors, boolean nightvision)
    {
        if (world == null)
        {
            return false;
        }
        else if (lightMapsColorsRgb == null)
        {
            return false;
        }
        else if (!Config.isCustomColors())
        {
            return false;
        }
        else
        {
            int worldType = world.provider.dimensionId;

            if (worldType >= -1 && worldType <= 1)
            {
                int lightMapIndex = worldType + 1;
                float[][] lightMapRgb = lightMapsColorsRgb[lightMapIndex];

                if (lightMapRgb == null)
                {
                    return false;
                }
                else
                {
                    int height = lightMapsHeight[lightMapIndex];

                    if (nightvision && height < 64)
                    {
                        return false;
                    }
                    else
                    {
                        int width = lightMapRgb.length / height;

                        if (width < 16)
                        {
                            Config.warn("Invalid lightmap width: " + width + " for: /environment/lightmap" + worldType + ".png");
                            lightMapsColorsRgb[lightMapIndex] = (float[][])null;
                            return false;
                        }
                        else
                        {
                            int startIndex = 0;

                            if (nightvision)
                            {
                                startIndex = width * 16 * 2;
                            }

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

                            if (world.lastLightningBolt > 0)
                            {
                                sun = 1.0F;
                            }

                            sun = Config.limitTo1(sun);
                            float sunX = sun * (float)(width - 1);
                            float torchX = Config.limitTo1(torchFlickerX + 0.5F) * (float)(width - 1);
                            float gamma = Config.limitTo1(Config.getGameSettings().gammaSetting);
                            boolean hasGamma = gamma > 1.0E-4F;
                            getLightMapColumn(lightMapRgb, sunX, startIndex, width, sunRgbs);
                            getLightMapColumn(lightMapRgb, torchX, startIndex + 16 * width, width, torchRgbs);
                            float[] rgb = new float[3];

                            for (int is = 0; is < 16; ++is)
                            {
                                for (int it = 0; it < 16; ++it)
                                {
                                    int r;

                                    for (r = 0; r < 3; ++r)
                                    {
                                        float g = Config.limitTo1(sunRgbs[is][r] + torchRgbs[it][r]);

                                        if (hasGamma)
                                        {
                                            float b = 1.0F - g;
                                            b = 1.0F - b * b * b * b;
                                            g = gamma * b + (1.0F - gamma) * g;
                                        }

                                        rgb[r] = g;
                                    }

                                    r = (int)(rgb[0] * 255.0F);
                                    int var22 = (int)(rgb[1] * 255.0F);
                                    int var21 = (int)(rgb[2] * 255.0F);
                                    lmColors[is * 16 + it] = -16777216 | r << 16 | var22 << 8 | var21;
                                }
                            }

                            return true;
                        }
                    }
                }
            }
            else
            {
                return false;
            }
        }
    }

    private static void getLightMapColumn(float[][] origMap, float x, int offset, int width, float[][] colRgb)
    {
        int xLow = (int)Math.floor((double)x);
        int xHigh = (int)Math.ceil((double)x);

        if (xLow == xHigh)
        {
            for (int var14 = 0; var14 < 16; ++var14)
            {
                float[] var15 = origMap[offset + var14 * width + xLow];
                float[] var16 = colRgb[var14];

                for (int var17 = 0; var17 < 3; ++var17)
                {
                    var16[var17] = var15[var17];
                }
            }
        }
        else
        {
            float dLow = 1.0F - (x - (float)xLow);
            float dHigh = 1.0F - ((float)xHigh - x);

            for (int y = 0; y < 16; ++y)
            {
                float[] rgbLow = origMap[offset + y * width + xLow];
                float[] rgbHigh = origMap[offset + y * width + xHigh];
                float[] rgb = colRgb[y];

                for (int i = 0; i < 3; ++i)
                {
                    rgb[i] = rgbLow[i] * dLow + rgbHigh[i] * dHigh;
                }
            }
        }
    }

    public static Vec3 getWorldFogColor(Vec3 fogVec, WorldClient world, float partialTicks)
    {
        int worldType = world.provider.dimensionId;

        switch (worldType)
        {
            case -1:
                fogVec = getFogColorNether(fogVec);
                break;

            case 0:
                Minecraft mc = Minecraft.getMinecraft();
                fogVec = getFogColor(fogVec, mc.theWorld, mc.renderViewEntity.posX, mc.renderViewEntity.posY + 1.0D, mc.renderViewEntity.posZ);
                break;

            case 1:
                fogVec = getFogColorEnd(fogVec);
        }

        return fogVec;
    }

    public static Vec3 getWorldSkyColor(Vec3 skyVec, WorldClient world, EntityLivingBase renderViewEntity, float partialTicks)
    {
        int worldType = world.provider.dimensionId;

        switch (worldType)
        {
            case 0:
                Minecraft mc = Minecraft.getMinecraft();
                skyVec = getSkyColor(skyVec, mc.theWorld, mc.renderViewEntity.posX, mc.renderViewEntity.posY + 1.0D, mc.renderViewEntity.posZ);
                break;

            case 1:
                skyVec = getSkyColorEnd(skyVec);
        }

        return skyVec;
    }
}
