BiomesOPlenty/common/biomesoplenty/world/layer/BiomeLayerIsland.java

package biomesoplenty.world.layer;

import net.minecraft.world.biome.BiomeGenBase;
import net.minecraft.world.gen.layer.IntCache;

public class BiomeLayerIsland extends BiomeLayer
{
	public BiomeLayerIsland(long par1, BiomeLayer par3GenLayer)
	{
		super(par1);
		parent = par3GenLayer;
	}

	/**
	 * Returns a list of integer values generated by this layer. These may be interpreted as temperatures, rainfall
	 * amounts, or biomeList[] indices based on the particular GenLayer subclass.
	 */
	@Override
	public int[] getInts(int par1, int par2, int par3, int par4)
	{
		int i1 = par1 - 1;
		int j1 = par2 - 1;
		int k1 = par3 + 2;
		int l1 = par4 + 2;
		int[] aint = parent.getInts(i1, j1, k1, l1);
		int[] aint1 = IntCache.getIntCache(par3 * par4);

		for (int i2 = 0; i2 < par4; ++i2)
		{
			for (int j2 = 0; j2 < par3; ++j2)
			{
				int k2 = aint[j2 + 0 + (i2 + 0) * k1];
				int l2 = aint[j2 + 2 + (i2 + 0) * k1];
				int i3 = aint[j2 + 0 + (i2 + 2) * k1];
				int j3 = aint[j2 + 2 + (i2 + 2) * k1];
				int k3 = aint[j2 + 1 + (i2 + 1) * k1];
				this.initChunkSeed(j2 + par1, i2 + par2);

				if (k3 == 0 && (k2 != 0 || l2 != 0 || i3 != 0 || j3 != 0))
				{
					int l3 = 1;
					int i4 = 1;

					if (k2 != 0 && this.nextInt(l3++) == 0)
					{
						i4 = k2;
					}

					if (l2 != 0 && this.nextInt(l3++) == 0)
					{
						i4 = l2;
					}

					if (i3 != 0 && this.nextInt(l3++) == 0)
					{
						i4 = i3;
					}

					if (j3 != 0 && this.nextInt(l3++) == 0)
					{
						i4 = j3;
					}

					if (this.nextInt(3) == 0)
					{
						aint1[j2 + i2 * par3] = i4;
					}
					else if (i4 == BiomeGenBase.icePlains.biomeID)
					{
						aint1[j2 + i2 * par3] = BiomeGenBase.frozenOcean.biomeID;
					}
					else
					{
						aint1[j2 + i2 * par3] = 0;
					}
				}
				else if (k3 > 0 && (k2 == 0 || l2 == 0 || i3 == 0 || j3 == 0))
				{
					if (this.nextInt(5) == 0)
					{
						if (k3 == BiomeGenBase.icePlains.biomeID)
						{
							aint1[j2 + i2 * par3] = BiomeGenBase.frozenOcean.biomeID;
						}
						else
						{
							aint1[j2 + i2 * par3] = 0;
						}
					}
					else
					{
						aint1[j2 + i2 * par3] = k3;
					}
				}
				else
				{
					aint1[j2 + i2 * par3] = k3;
				}
			}
		}

		return aint1;
	}
}