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package net.minecraft.server;
import java.util.Random;
public class WorldGenSwampTree extends WorldGenerator implements BlockSapling.TreeGenerator { // CraftBukkit - add interface
public WorldGenSwampTree() {}
public boolean a(World world, Random random, int i, int j, int k) {
return generate((org.bukkit.BlockChangeDelegate) world, random, i, j, k);
}
public boolean generate(org.bukkit.BlockChangeDelegate world, Random random, int i, int j, int k) {
int l;
for (l = random.nextInt(4) + 5; world.getTypeId(i, j - 1, k) != 0 && Block.byId[world.getTypeId(i, j - 1, k)].material == Material.WATER; --j) { // CraftBukkit - bypass World.getMaterial
;
}
boolean flag = true;
if (j >= 1 && j + l + 1 <= 128) {
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 = 3;
}
for (j1 = i - b0; j1 <= i + b0 && flag; ++j1) {
for (k1 = k - b0; k1 <= k + b0 && flag; ++k1) {
if (i1 >= 0 && i1 < 128) {
l1 = world.getTypeId(j1, i1, k1);
if (l1 != 0 && l1 != Block.LEAVES.id) {
if (l1 != Block.STATIONARY_WATER.id && l1 != Block.WATER.id) {
flag = false;
} else if (i1 > j) {
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 < 128 - l - 1) {
this.setTypeAndData(world, i, j - 1, k, Block.DIRT.id, 0); // CraftBukkit
int i2;
int j2;
for (j2 = j - 3 + l; j2 <= j + l; ++j2) {
j1 = j2 - (j + l);
k1 = 2 - j1 / 2;
for (l1 = i - k1; l1 <= i + k1; ++l1) {
i2 = l1 - i;
for (int k2 = k - k1; k2 <= k + k1; ++k2) {
int l2 = k2 - k;
if ((Math.abs(i2) != k1 || Math.abs(l2) != k1 || random.nextInt(2) != 0 && j1 != 0) && !Block.n[world.getTypeId(l1, j2, k2)]) {
this.setTypeAndData(world, l1, j2, k2, Block.LEAVES.id, 0); // CraftBukkit
}
}
}
}
for (j2 = 0; j2 < l; ++j2) {
j1 = world.getTypeId(i, j + j2, k);
if (j1 == 0 || j1 == Block.LEAVES.id || j1 == Block.WATER.id || j1 == Block.STATIONARY_WATER.id) {
this.setTypeAndData(world, i, j + j2, k, Block.LOG.id, 0); // CraftBukkit
}
}
for (j2 = j - 3 + l; j2 <= j + l; ++j2) {
j1 = j2 - (j + l);
k1 = 2 - j1 / 2;
for (l1 = i - k1; l1 <= i + k1; ++l1) {
for (i2 = k - k1; i2 <= k + k1; ++i2) {
if (world.getTypeId(l1, j2, i2) == Block.LEAVES.id) {
if (random.nextInt(4) == 0 && world.getTypeId(l1 - 1, j2, i2) == 0) {
this.a(world, l1 - 1, j2, i2, 8);
}
if (random.nextInt(4) == 0 && world.getTypeId(l1 + 1, j2, i2) == 0) {
this.a(world, l1 + 1, j2, i2, 2);
}
if (random.nextInt(4) == 0 && world.getTypeId(l1, j2, i2 - 1) == 0) {
this.a(world, l1, j2, i2 - 1, 1);
}
if (random.nextInt(4) == 0 && world.getTypeId(l1, j2, i2 + 1) == 0) {
this.a(world, l1, j2, i2 + 1, 4);
}
}
}
}
}
return true;
} else {
return false;
}
}
} else {
return false;
}
}
private void a(org.bukkit.BlockChangeDelegate world, int i, int j, int k, int l) { // CraftBukkit - change signature
this.setTypeAndData(world, i, j, k, Block.VINE.id, l); // CraftBukkit
int i1 = 4;
while (true) {
--j;
if (world.getTypeId(i, j, k) != 0 || i1 <= 0) {
return;
}
this.setTypeAndData(world, i, j, k, Block.VINE.id, l); // CraftBukkit
--i1;
}
}
}
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