/**
* Detecting factory, based on the position of the rails. The base must be one block below and the
* sign if it exists must be two or three blocks below. Signs are guaranteed to be signs (unless
* they're null) and rails are guaranteed to be rails.
*
* <p>This is the most important constructor, since it is the one invoked when processing cart
* move events.
*
* @param rail the block containing the rails.
*/
public static CartMechanismBlocks findByRail(Block rail) throws InvalidMechanismException {
if (!BlockType.isRailBlock(rail.getTypeId()))
throw new InvalidMechanismException("rail argument must be a rail!");
if (SignUtil.isSign(rail.getFace(BlockFace.DOWN, 2).getTypeId())) {
return new CartMechanismBlocks(
rail, rail.getFace(BlockFace.DOWN, 1), rail.getFace(BlockFace.DOWN, 2));
} else if (SignUtil.isSign(rail.getFace(BlockFace.DOWN, 3).getTypeId())) {
return new CartMechanismBlocks(
rail, rail.getFace(BlockFace.DOWN, 1), rail.getFace(BlockFace.DOWN, 3));
}
return new CartMechanismBlocks(rail, rail.getFace(BlockFace.DOWN, 1), null);
}
PerformResult perform() throws WorldEditorException {
if (dontRollback.contains(replaced)) return PerformResult.BLACKLISTED;
final Block block = loc.getBlock();
if (replaced == 0 && block.getTypeId() == 0) return PerformResult.NO_ACTION;
final BlockState state = block.getState();
if (!world.isChunkLoaded(block.getChunk())) world.loadChunk(block.getChunk());
if (type == replaced) {
if (type == 0) {
if (!block.setTypeId(0))
throw new WorldEditorException(block.getTypeId(), 0, block.getLocation());
} else if (ca != null && (type == 23 || type == 54 || type == 61 || type == 62)) {
int leftover = 0;
try {
leftover =
modifyContainer(
state, new ItemStack(ca.itemType, -ca.itemAmount, (short) 0, ca.itemData));
if (leftover > 0)
for (final BlockFace face :
new BlockFace[] {
BlockFace.NORTH, BlockFace.SOUTH, BlockFace.EAST, BlockFace.WEST
})
if (block.getRelative(face).getTypeId() == 54)
leftover =
modifyContainer(
block.getRelative(face).getState(),
new ItemStack(
ca.itemType,
ca.itemAmount < 0 ? leftover : -leftover,
(short) 0,
ca.itemData));
} catch (final Exception ex) {
throw new WorldEditorException(ex.getMessage(), block.getLocation());
}
if (!state.update())
throw new WorldEditorException(
"Failed to update inventory of " + materialName(block.getTypeId()),
block.getLocation());
if (leftover > 0 && ca.itemAmount < 0)
throw new WorldEditorException(
"Not enough space left in " + materialName(block.getTypeId()), block.getLocation());
} else return PerformResult.NO_ACTION;
return PerformResult.SUCCESS;
}
if (!(equalTypes(block.getTypeId(), type) || replaceAnyway.contains(block.getTypeId())))
return PerformResult.NO_ACTION;
if (state instanceof InventoryHolder) {
((InventoryHolder) state).getInventory().clear();
state.update();
}
if (block.getTypeId() == replaced) {
if (block.getData() != (type == 0 ? data : (byte) 0))
block.setData(type == 0 ? data : (byte) 0, true);
else return PerformResult.NO_ACTION;
} else if (!block.setTypeIdAndData(replaced, type == 0 ? data : (byte) 0, true))
throw new WorldEditorException(block.getTypeId(), replaced, block.getLocation());
final int curtype = block.getTypeId();
if (signtext != null && (curtype == 63 || curtype == 68)) {
final Sign sign = (Sign) block.getState();
final String[] lines = signtext.split("\0", 4);
if (lines.length < 4) return PerformResult.NO_ACTION;
for (int i = 0; i < 4; i++) sign.setLine(i, lines[i]);
if (!sign.update())
throw new WorldEditorException(
"Failed to update signtext of " + materialName(block.getTypeId()),
block.getLocation());
} else if (curtype == 26) {
final Bed bed = (Bed) block.getState().getData();
final Block secBlock =
bed.isHeadOfBed()
? block.getRelative(bed.getFacing().getOppositeFace())
: block.getRelative(bed.getFacing());
if (secBlock.getTypeId() == 0
&& !secBlock.setTypeIdAndData(26, (byte) (bed.getData() | 8), true))
throw new WorldEditorException(secBlock.getTypeId(), 26, secBlock.getLocation());
} else if (curtype == 64 || curtype == 71) {
final byte blockData = block.getData();
final Block secBlock =
(blockData & 8) == 8
? block.getRelative(BlockFace.DOWN)
: block.getRelative(BlockFace.UP);
if (secBlock.getTypeId() == 0
&& !secBlock.setTypeIdAndData(curtype, (byte) (blockData | 8), true))
throw new WorldEditorException(secBlock.getTypeId(), curtype, secBlock.getLocation());
} else if ((curtype == 29 || curtype == 33) && (block.getData() & 8) > 0) {
final PistonBaseMaterial piston = (PistonBaseMaterial) block.getState().getData();
final Block secBlock = block.getRelative(piston.getFacing());
if (secBlock.getTypeId() == 0
&& !secBlock.setTypeIdAndData(
34,
curtype == 29 ? (byte) (block.getData() | 8) : (byte) (block.getData() & ~8),
true))
throw new WorldEditorException(secBlock.getTypeId(), 34, secBlock.getLocation());
} else if (curtype == 34) {
final PistonExtensionMaterial piston = (PistonExtensionMaterial) block.getState().getData();
final Block secBlock = block.getRelative(piston.getFacing().getOppositeFace());
if (secBlock.getTypeId() == 0
&& !secBlock.setTypeIdAndData(
piston.isSticky() ? 29 : 33, (byte) (block.getData() | 8), true))
throw new WorldEditorException(
secBlock.getTypeId(), piston.isSticky() ? 29 : 33, secBlock.getLocation());
} else if (curtype == 18 && (block.getData() & 8) > 0)
block.setData((byte) (block.getData() & 0xF7));
return PerformResult.SUCCESS;
}
/**
* Detecting factory; defers to one of the other three specific detecting factories based on
* whether the given unknown block appears to be a sign, rail, or base.
*
* @param unknown the block to examine.
*/
public static CartMechanismBlocks find(Block unknown) throws InvalidMechanismException {
final int ti = unknown.getTypeId();
if (SignUtil.isSign(ti)) return findBySign(unknown);
else if (BlockType.isRailBlock(ti)) return findByRail(unknown);
else return findByBase(unknown);
}