WorldGenEucalyptusTree.java

package erebus.world.feature.tree;

import java.util.Random;

import erebus.blocks.EnumWood;
import net.minecraft.init.Blocks;
import net.minecraft.util.math.BlockPos;
import net.minecraft.world.World;

public class WorldGenEucalyptusTree extends WorldGenTreeBase {

	private static final int span = 5;
	private static final int branches = 8;

	public WorldGenEucalyptusTree() {
		super(EnumWood.EUCALYPTUS);
	}

	@Override
	public boolean generate(World world, Random rand, BlockPos pos) {
		int x = pos.getX();
		int y = pos.getY();
		int z = pos.getZ();

		if (world.getBlockState(pos.down()) != Blocks.GRASS.getDefaultState())
			return false;

		int height = 8 + rand.nextInt(4);

		for (int yy = 0; yy < span; yy++)
			for (int xx = -span; xx <= span; xx++)
				for (int zz = -span; zz <= span; zz++)
					if (!world.isAirBlock(new BlockPos(x + xx, y + height + yy, z + zz)))
						return false;

		for (int p = -2; p < 3; p++)
			for (int r = -1; r < 2; r++) {
				world.setBlockState(new BlockPos(x + p, y + height + span + 1, z + r), leaves.getStateFromMeta(0), 2);
				world.setBlockState(new BlockPos(x + r, y + height + span + 1, z + p), leaves.getStateFromMeta(0), 2);
			}

		for (int p = -1; p < 2; p++)
			for (int r = -1; r < 2; r++)
				world.setBlockState(new BlockPos(x + r, y + height + span + 2, z + p), leaves.getStateFromMeta(0), 2);

		for (int a = 0; a < branches; a++) {
			int disX = rand.nextInt(span * 2 + 1) - span;
			int disY = rand.nextInt(span + 1);
			int disZ = rand.nextInt(span * 2 + 1) - span;

			int posX = x + disX;
			int posY = y + height - 1 + disY;
			int posZ = z + disZ;

			for (int p = -2; p < 3; p++)
				for (int r = -1; r < 2; r++) {
					world.setBlockState(new BlockPos(posX + p, posY, posZ + r), leaves.getStateFromMeta(0), 2);
					world.setBlockState(new BlockPos(posX + r, posY, posZ + p), leaves.getStateFromMeta(0), 2);
				}

			for (int p = -1; p < 2; p++)
				for (int r = -1; r < 2; r++)
					world.setBlockState(new BlockPos(posX + r, posY + 1, posZ + p), leaves.getStateFromMeta(0), 2);
			for (int b = 0; b < span; b++) {
				int xx = disX * (b + 1) / span;
				int yy = disY * (b + 1) / span;
				int zz = disZ * (b + 1) / span;

				world.setBlockState(new BlockPos(x + xx, y + height - 1 + yy, z + zz), log.getStateFromMeta(0), 2);
			}

			world.setBlockState(new BlockPos(posX, posY, posZ), log.getStateFromMeta(0), 2);
		}

		for (int yy = 0; yy < height + span + 2; yy++)
			world.setBlockState(new BlockPos(x, y + yy, z), log.getStateFromMeta(0), 2);

		return true;
	}
}