Examples with PacketPlayOutUpdateSignHandle com.bergerkiller.generated.net.minecraft.network.protocol.game.PacketPlayOutUpdateSignHandle used on opensource projects

Example 1 with PacketPlayOutUpdateSignHandle

use of com.bergerkiller.generated.net.minecraft.network.protocol.game.PacketPlayOutUpdateSignHandle in project BKCommonLib by bergerhealer.

the class BlockStateChangePacketHandler_1_8_to_1_9_2 method enable.

@Override
public void enable() {
    register(PacketType.OUT_UPDATE_SIGN, (player, commonPacket, listener) -> {
        final PacketPlayOutUpdateSignHandle packet = PacketPlayOutUpdateSignHandle.createHandle(commonPacket.getHandle());
        // Stores decoded String lines that it was before, for easier comparison
        // Only set if the deferred metadata supplier is ever called
        final AtomicReference<String[]> linesBeforeRef = new AtomicReference<>();
        // Initialize the metadata once called
        final DeferredSupplier<CommonTagCompound> metadataSupplier = DeferredSupplier.of(() -> {
            ChatText[] lines = packet.getLines();
            CommonTagCompound metadata = new CommonTagCompound();
            String[] linesBefore = new String[4];
            for (int n = 0; n < 4; n++) {
                metadata.putValue(LINE_META_KEYS[n], linesBefore[n] = lines[n].getJson());
            }
            linesBeforeRef.set(linesBefore);
            return metadata;
        });
        // Errors are handled upstream
        if (!listener.onBlockChange(player, BlockStateChange.deferred(packet.getPosition(), BlockStateType.SIGN, metadataSupplier, () -> true))) {
            return false;
        }
        // Only if getMetadata() was ever even called
        if (metadataSupplier.isInitialized()) {
            // Check if the lines in metadata changed compared to the lines in the packet
            // If they are, write them all back (re-serialize them as chat components)
            // Don't touch lines that weren't modified to retain any original json formatting
            CommonTagCompound metadata = metadataSupplier.get();
            String[] linesBefore = linesBeforeRef.get();
            ChatText[] newLines = packet.getLines().clone();
            boolean changed = false;
            for (int n = 0; n < 4; n++) {
                String newLine = metadata.getValue(LINE_META_KEYS[n], "");
                if (!linesBefore[n].equals(newLine)) {
                    newLines[n] = ChatText.fromJson(newLine);
                    changed = true;
                }
            }
            if (changed) {
                packet.setLines(newLines);
            }
        }
        return true;
    });
}