GlowstoneDecorator.java

package net.glowstone.generator.decorators.nether;

import net.glowstone.generator.decorators.BlockDecorator;
import org.bukkit.Chunk;
import org.bukkit.Material;
import org.bukkit.World;
import org.bukkit.block.Block;
import org.bukkit.block.BlockFace;
import org.bukkit.block.BlockState;

import java.util.Random;

public class GlowstoneDecorator extends BlockDecorator {

    private static final BlockFace[] SIDES = new BlockFace[] {BlockFace.EAST, BlockFace.WEST, BlockFace.DOWN, BlockFace.UP, BlockFace.SOUTH, BlockFace.NORTH};

    private boolean variableAmount;

    public GlowstoneDecorator() {
        this(false);
    }

    public GlowstoneDecorator(boolean variableAmount) {
        this.variableAmount = variableAmount;
    }

    @Override
    public void decorate(World world, Random random, Chunk source) {
        int amount = variableAmount ? 1 + random.nextInt(1 + random.nextInt(10)) : 10;
        for (int i = 0; i < amount; i++) {

            int sourceX = (source.getX() << 4) + random.nextInt(16);
            int sourceZ = (source.getZ() << 4) + random.nextInt(16);
            int sourceY = 4 + random.nextInt(120);

            Block block = world.getBlockAt(sourceX, sourceY, sourceZ);
            if (block.isEmpty() && block.getRelative(BlockFace.UP).getType() == Material.NETHERRACK) {
                BlockState state = block.getState();
                state.setType(Material.GLOWSTONE);
                state.update(true);

                for (int j = 0; j < 1500; j++) {
                    int x = sourceX + random.nextInt(8) - random.nextInt(8);
                    int z = sourceZ + random.nextInt(8) - random.nextInt(8);
                    int y = sourceY - random.nextInt(12);
                    block = world.getBlockAt(x, y, z);
                    if (block.isEmpty()) {
                        int glowstoneBlockCount = 0;
                        for (BlockFace face : SIDES) {
                            if (block.getRelative(face).getType() == Material.GLOWSTONE) {
                                glowstoneBlockCount++;
                            }
                        }
                        if (glowstoneBlockCount == 1) {
                            state = block.getState();
                            state.setType(Material.GLOWSTONE);
                            state.update(true);
                        }
                    }
                }
            }
        }
    }
}