@Override
public List<Message> getSpawnMessages(Entity entity, RepositionManager rm) {
FallingBlock block = entity.get(FallingBlock.class);
if (block != null) {
VanillaBlockMaterial material = block.getMaterial();
int messageData =
material.getMinecraftId() | (material.getMinecraftData(material.getData()) >> 16);
List<Message> messages = new ArrayList<Message>();
final double p = 32d;
Point pos = entity.getScene().getPosition();
int x = (int) Math.floor(pos.getX() * p);
int y = (int) Math.floor(pos.getY() * p);
int z = (int) Math.floor(pos.getZ() * p);
byte yaw = (byte) ChannelBufferUtils.protocolifyYaw(entity.getScene().getRotation().getYaw());
byte pitch =
(byte) ChannelBufferUtils.protocolifyPitch(entity.getScene().getRotation().getPitch());
short fallSpeed = (short) (block.getFallingSpeed() * 8000d);
messages.add(
new EntityObjectMessage(
entity.getId(),
(byte) typeId,
x,
y,
z,
messageData,
(short) 0,
fallSpeed,
(short) 0,
yaw,
pitch,
rm));
messages.add(new EntityMetadataMessage(entity.getId(), getSpawnParameters(entity)));
return messages;
} else {
return Collections.emptyList();
}
}
/**
* Simulates the result of a blocks falling inside a buffer. If the blocks reach the bottom of the
* buffer without hitting any obstacles they may either be removed or stopped at the bottom. If
* the block at (x, y, z) is not a SolidMoving, nothing will happen, else it and the blocks above
* will be subject to the simulation. If the blocks fall on a placement obstacle (such as a torch)
* they will be removed.
*
* @param buffer The buffer in which to simulate the fall.
* @param x The x coordinate of the block.
* @param y The y coordinate of the block.
* @param z The Z coordinate of the block.
* @param remove If the blocks should be removed after reaching the bottom of the buffer, or
* stopped.
*/
public static void simulateFall(
CuboidBlockMaterialBuffer buffer, int x, int y, int z, boolean remove) {
if (!buffer.isInside(x, y, z)) {
return;
}
BlockMaterial falling = buffer.get(x, y, z);
if (!(falling instanceof SolidMoving)) {
return;
}
int baseY = buffer.getBase().getFloorY();
for (int obstacleY = y; --obstacleY >= baseY; ) {
if (FallingBlock.isFallingObstacle(buffer.get(x, obstacleY, z))) {
// obstacle found
if (obstacleY == y - 1) {
// right underneath, nowhere to fall
return;
}
if (buffer.get(x, ++obstacleY, z).isPlacementObstacle()) {
// blocks can't stay here. Delete them
remove = true;
break;
}
do {
// move the blocks above the obstacle
buffer.set(x, obstacleY++, z, falling);
buffer.set(x, y++, z, VanillaMaterials.AIR);
} while ((falling = buffer.get(x, y, z)) instanceof SolidMoving);
return;
}
}
// no obstacle found
if (remove) {
// delete the blocks
final int topY = buffer.getTop().getFloorY() - 1;
do {
buffer.set(x, y++, z, VanillaMaterials.AIR);
} while (y <= topY && buffer.get(x, y, z) instanceof SolidMoving);
} else {
// move the blocks to the bottom of the buffer
do {
buffer.set(x, baseY++, z, falling);
buffer.set(x, y++, z, VanillaMaterials.AIR);
} while ((falling = buffer.get(x, y, z)) instanceof SolidMoving);
}
}