Worldgenminable.java

package com.Dwarf_Puncher.TitanTurtles.BlocksAndItems;


import com.google.common.base.Predicate;
import java.util.Random;

import net.minecraft.block.Block;
import net.minecraft.block.state.IBlockState;
import net.minecraft.block.state.pattern.BlockMatcher;
import net.minecraft.init.Blocks;
import net.minecraft.util.math.BlockPos;
import net.minecraft.util.math.MathHelper;
import net.minecraft.world.World;
import net.minecraft.world.gen.feature.WorldGenerator;


public class CustomBlockWorldGenMinable extends WorldGenerator
{
private final IBlockState oreBlock;
private final int numberOfBlocks;
private final Block[] genIn;
private final Block[] genNear;
private final int genDistance;

public CustomBlockWorldGenMinable(IBlockState block,int veinSize,Block[] generateIn,Block[] generateNear,int generateInDistance)
{
	this.oreBlock = block;
	this.numberOfBlocks = veinSize;
	this.genIn = generateIn;
	this.genNear = generateNear;
	this.genDistance = generateInDistance;
}
public CustomBlockWorldGenMinable(IBlockState block,int veinSize)
{
	this(block, veinSize, new Block[]{Blocks.stone});
}
public CustomBlockWorldGenMinable(IBlockState block,int veinSize, Block[] generateIn)
{
	this(block, veinSize, generateIn, null, 1);
}

private boolean isReplaceable(World worldIn, BlockPos blockpos, Block[] genIn)
{
	for(Block block : genIn)
	{
		if(worldIn.getBlockState(blockpos).getBlock() == block)
		{
			return true;
		}
	}

	return false;
}
private boolean isNear(BlockPos blockpos, Block[] near, int distance, World worldIn)
{
	for (int x = (blockpos.getX()-distance); x <= (blockpos.getX()+distance); ++x)
    {
		for (int y = (blockpos.getY()-distance); y <= (blockpos.getY()+distance); ++y)
        {
			for (int z = (blockpos.getZ()-distance); z <= (blockpos.getZ()+distance); ++z)
            {
				BlockPos Nearblockpos = new BlockPos(x, y, z);

				for(Block nearblock : near)
		    	{
					if(worldIn.getBlockState(Nearblockpos).getBlock() == nearblock && Nearblockpos != blockpos)
					{
						return true;
					}
		    	}
            }
        }
    }
	return false;
}
public boolean generate(World worldIn, Random rand, BlockPos position)
{
    float f = rand.nextFloat() * (float)Math.PI;
    double d0 = (double)((float)(position.getX() + 8) + MathHelper.sin(f) * (float)this.numberOfBlocks / 8.0F);
    double d1 = (double)((float)(position.getX() + 8) - MathHelper.sin(f) * (float)this.numberOfBlocks / 8.0F);
    double d2 = (double)((float)(position.getZ() + 8) + MathHelper.cos(f) * (float)this.numberOfBlocks / 8.0F);
    double d3 = (double)((float)(position.getZ() + 8) - MathHelper.cos(f) * (float)this.numberOfBlocks / 8.0F);
    double d4 = (double)(position.getY() + rand.nextInt(3) - 2);
    double d5 = (double)(position.getY() + rand.nextInt(3) - 2);

    for (int i = 0; i < this.numberOfBlocks; ++i)
    {
        float f1 = (float)i / (float)this.numberOfBlocks;
        double d6 = d0 + (d1 - d0) * (double)f1;
        double d7 = d4 + (d5 - d4) * (double)f1;
        double d8 = d2 + (d3 - d2) * (double)f1;
        double d9 = rand.nextDouble() * (double)this.numberOfBlocks / 16.0D;
        double d10 = (double)(MathHelper.sin((float)Math.PI * f1) + 1.0F) * d9 + 1.0D;
        double d11 = (double)(MathHelper.sin((float)Math.PI * f1) + 1.0F) * d9 + 1.0D;
        int j = MathHelper.floor_double(d6 - d10 / 2.0D);
        int k = MathHelper.floor_double(d7 - d11 / 2.0D);
        int l = MathHelper.floor_double(d8 - d10 / 2.0D);
        int i1 = MathHelper.floor_double(d6 + d10 / 2.0D);
        int j1 = MathHelper.floor_double(d7 + d11 / 2.0D);
        int k1 = MathHelper.floor_double(d8 + d10 / 2.0D);

        for (int l1 = j; l1 <= i1; ++l1)
        {
            double d12 = ((double)l1 + 0.5D - d6) / (d10 / 2.0D);

            if (d12 * d12 < 1.0D)
            {
                for (int i2 = k; i2 <= j1; ++i2)
                {
                    double d13 = ((double)i2 + 0.5D - d7) / (d11 / 2.0D);

                    if (d12 * d12 + d13 * d13 < 1.0D)
                    {
                        for (int j2 = l; j2 <= k1; ++j2)
                        {
                            double d14 = ((double)j2 + 0.5D - d8) / (d10 / 2.0D);

                            if (d12 * d12 + d13 * d13 + d14 * d14 < 1.0D)
                            {
                                BlockPos blockpos = new BlockPos(l1, i2, j2);

                                IBlockState state = worldIn.getBlockState(blockpos);

                                if (this.isReplaceable(worldIn, blockpos, this.genIn))
                                {
                                	if (this.genNear == null)
                                	{
                                		worldIn.setBlockState(blockpos, this.oreBlock, 2);
                                	}
                                	else
                                	{
                                		if(this.isNear(blockpos, this.genNear, this.genDistance, worldIn))
                                		{
                                			worldIn.setBlockState(blockpos, this.oreBlock, 2);
                                		}
                                	}
                                }
                            }
                        }
                    }
                }
            }
        }
    }

    return true;
}
}