package net.minecraft.server; import java.util.Random; import org.bukkit.BlockChangeDelegate; // CraftBukkit public class WorldGenTrees extends WorldGenerator { public WorldGenTrees(boolean flag) { super(flag); } public boolean a(World world, Random random, int i, int j, int k) { // CraftBukkit start // sk: The idea is to have (our) WorldServer implement // BlockChangeDelegate and then we can implicitly cast World to // WorldServer (a safe cast, AFAIK) and no code will be broken. This // then allows plugins to catch manually-invoked generation events return this.generate((BlockChangeDelegate) world, random, i, j, k); } public boolean generate(BlockChangeDelegate world, Random random, int i, int j, int k) { // CraftBukkit end int l = random.nextInt(3) + 4; boolean flag = true; if (j >= 1 && j + l + 1 <= world.getHeight()) { // CraftBukkit int i1; int j1; int k1; int l1; for (i1 = j; i1 <= j + 1 + l; ++i1) { byte b0 = 1; if (i1 == j) { b0 = 0; } if (i1 >= j + 1 + l - 2) { b0 = 2; } for (j1 = i - b0; j1 <= i + b0 && flag; ++j1) { for (k1 = k - b0; k1 <= k + b0 && flag; ++k1) { if (i1 >= 0 && i1 < world.getHeight()) { // CraftBukkit l1 = world.getTypeId(j1, i1, k1); if (l1 != 0 && l1 != Block.LEAVES.id) { flag = false; } } else { flag = false; } } } } if (!flag) { return false; } else { i1 = world.getTypeId(i, j - 1, k); if ((i1 == Block.GRASS.id || i1 == Block.DIRT.id) && j < world.getHeight() - l - 1) { // CraftBukkit world.setRawTypeId(i, j - 1, k, Block.DIRT.id); int i2; for (i2 = j - 3 + l; i2 <= j + l; ++i2) { j1 = i2 - (j + l); k1 = 1 - j1 / 2; for (l1 = i - k1; l1 <= i + k1; ++l1) { int j2 = l1 - i; for (int k2 = k - k1; k2 <= k + k1; ++k2) { int l2 = k2 - k; if ((Math.abs(j2) != k1 || Math.abs(l2) != k1 || random.nextInt(2) != 0 && j1 != 0) && !Block.o[world.getTypeId(l1, i2, k2)]) { this.a(world, l1, i2, k2, Block.LEAVES.id, 0); } } } } for (i2 = 0; i2 < l; ++i2) { j1 = world.getTypeId(i, j + i2, k); if (j1 == 0 || j1 == Block.LEAVES.id) { this.a(world, i, j + i2, k, Block.LOG.id, 0); } } return true; } else { return false; } } } else { return false; } } }