/** Returns true if at least one block has changed. */
public static final boolean genBlob(
DecoratorFeatureGenerator gen, double x, double y, double z, double rad, Block block) {
boolean generatedSomething = false;
double radSq = MathUtil.square(rad + 0.5D);
int size = MathUtil.ceil(rad),
ix = MathUtil.floor(x),
iy = MathUtil.floor(y),
iz = MathUtil.floor(z);
List<BlockPosM> locs = new ArrayList<BlockPosM>();
for (int xx = ix - size; xx <= ix + size; xx++) {
for (int yy = iy - size; yy <= iy + size; yy++) {
for (int zz = iz - size; zz <= iz + size; zz++) {
if (MathUtil.distanceSquared(xx - x, yy - y, zz - z) <= radSq) {
if (gen.getBlock(xx, yy, zz) != block && gen.setBlock(xx, yy, zz, block)) {
generatedSomething = true;
locs.add(new BlockPosM(xx, yy, zz));
}
}
}
}
}
return generatedSomething;
}
@Override
public void generate(DecoratorFeatureGenerator gen, Random rand) {
List<BlockPosM> blocks = gen.getUsedLocations();
if (blocks.isEmpty()) return;
int amount = amountGen.generate(rand, minAmount, maxAmount);
for (int attempts = minAttempts + rand.nextInt(maxAttempts - minAttempts + 1), xx, yy, zz;
attempts > 0 && amount > 0 && !blocks.isEmpty();
attempts--) {
BlockPosM loc = blocks.remove(rand.nextInt(blocks.size()));
if (gen.getBlock(loc.x, loc.y, loc.z) != Blocks.end_stone
|| gen.getBlock(loc.x, loc.y - 1, loc.z) != Blocks.end_stone) continue;
byte airDir = -1;
for (byte dir = 0; dir < 4; dir++) {
if (gen.getBlock(loc.x + Direction.offsetX[dir], loc.y, loc.z + Direction.offsetZ[dir])
== Blocks.air) {
if (airDir == -1) airDir = dir;
else {
airDir = -1;
break;
}
}
}
if (airDir == -1) continue;
xx = loc.x + Direction.offsetX[airDir];
yy = loc.y;
zz = loc.z + Direction.offsetZ[airDir];
Block block;
if (!requireBlockBelow) {
gen.setBlock(loc.x, loc.y, loc.z, liquid);
continue;
}
while (--yy >= -16) {
if ((block = gen.getBlock(xx, yy, zz)) == Blocks.end_stone) {
if (gen.getBlock(xx, yy - 1, zz) == Blocks.end_stone) {
gen.setBlock(loc.x, loc.y, loc.z, liquid);
gen.setBlock(xx, yy, zz, Blocks.air);
--amount;
break;
}
} else if (block != Blocks.air) break;
}
}
}
