Tripwire connections

common/src/main/java/us/myles/ViaVersion/protocols/protocol1_13to1_12_2/blockconnections/ConnectionData.java

@@ -176,6 +176,7 @@ public class ConnectionData {
 		StairConnectionHandler.init();
 		FlowerConnectionHandler.init();
 		ChorusPlantConnectionHandler.init();
+		TripwireConnectionHandler.init();
 
 		if (Via.getConfig().getBlockConnectionMethod().equalsIgnoreCase("packet")) {
 			Via.getManager().getProviders().register(BlockConnectionProvider.class, new PacketBlockConnectionProvider());

common/src/main/java/us/myles/ViaVersion/protocols/protocol1_13to1_12_2/blockconnections/ConnectionHandler.java

@@ -6,10 +6,10 @@ import us.myles.ViaVersion.api.minecraft.Position;
 import us.myles.ViaVersion.protocols.protocol1_13to1_12_2.blockconnections.providers.BlockConnectionProvider;
 
 public abstract class ConnectionHandler {
-    public abstract int connect(UserConnection connection, Position position, int blockState);
+    public abstract int connect(UserConnection user, Position position, int blockState);
 
-	public int getBlockData(UserConnection connection, Position position) {
-	    return Via.getManager().getProviders().get(BlockConnectionProvider.class).getBlockdata(connection, position);
+	public int getBlockData(UserConnection user, Position position) {
+	    return Via.getManager().getProviders().get(BlockConnectionProvider.class).getBlockdata(user, position);
     }
 
     public boolean canConnect(int id) {

common/src/main/java/us/myles/ViaVersion/protocols/protocol1_13to1_12_2/blockconnections/TripwireConnectionHandler.java

@@ -0,0 +1,92 @@
+package us.myles.ViaVersion.protocols.protocol1_13to1_12_2.blockconnections;
+
+import lombok.AllArgsConstructor;
+import lombok.Getter;
+import lombok.ToString;
+import us.myles.ViaVersion.api.data.UserConnection;
+import us.myles.ViaVersion.api.minecraft.BlockFace;
+import us.myles.ViaVersion.api.minecraft.Position;
+
+import java.util.HashMap;
+import java.util.Map;
+
+public class TripwireConnectionHandler extends ConnectionHandler {
+	private static Map<Integer, TripwireData> tripwireDataMap = new HashMap<>();
+	private static Map<Byte, Integer> connectedBlocks = new HashMap<>();
+	private static Map<Integer, BlockFace> tripwireHooks = new HashMap<>();
+
+	static void init() {
+		TripwireConnectionHandler connectionHandler = new TripwireConnectionHandler();
+		for (Map.Entry<String, Integer> blockState : ConnectionData.keyToId.entrySet()) {
+			String key = blockState.getKey().split("\\[")[0];
+
+			if (key.equals("minecraft:tripwire_hook")) {
+				WrappedBlockData blockData = WrappedBlockData.fromString(blockState.getKey());
+				tripwireHooks.put(blockState.getValue(), BlockFace.valueOf(blockData.getValue("facing").toUpperCase()));
+			} else if (key.equals("minecraft:tripwire")) {
+				WrappedBlockData blockData = WrappedBlockData.fromString(blockState.getKey());
+
+				TripwireData tripwireData = new TripwireData(
+						blockData.getValue("attached").equals("true"),
+						blockData.getValue("disarmed").equals("true"),
+						blockData.getValue("powered").equals("true")
+				);
+
+				tripwireDataMap.put(blockState.getValue(), tripwireData);
+				connectedBlocks.put(getStates(blockData), blockState.getValue());
+
+				ConnectionData.connectionHandlerMap.put(blockState.getValue(), connectionHandler);
+			}
+		}
+	}
+
+	private static byte getStates(WrappedBlockData blockData) {
+		byte b = 0;
+		if (blockData.getValue("attached").equals("true")) b |= 1;
+		if (blockData.getValue("disarmed").equals("true")) b |= 2;
+		if (blockData.getValue("powered").equals("true")) b |= 4;
+		if (blockData.getValue("east").equals("true")) b |= 8;
+		if (blockData.getValue("north").equals("true")) b |= 16;
+		if (blockData.getValue("south").equals("true")) b |= 32;
+		if (blockData.getValue("west").equals("true")) b |= 64;
+		return b;
+	}
+
+	@Override
+	public int connect(UserConnection user, Position position, int blockState) {
+		TripwireData tripwireData = tripwireDataMap.get(blockState);
+		if (tripwireData == null) return blockState;
+		byte b = 0;
+		if (tripwireData.isAttached()) b |= 1;
+		if (tripwireData.isDisarmed()) b |= 2;
+		if (tripwireData.isPowered()) b |= 4;
+
+		int east = getBlockData(user, position.getRelative(BlockFace.EAST));
+		int north = getBlockData(user, position.getRelative(BlockFace.NORTH));
+		int south = getBlockData(user, position.getRelative(BlockFace.SOUTH));
+		int west = getBlockData(user, position.getRelative(BlockFace.WEST));
+
+		if (tripwireDataMap.containsKey(east) || tripwireHooks.get(east) == BlockFace.WEST) {
+			b |= 8;
+		}
+		if (tripwireDataMap.containsKey(north) || tripwireHooks.get(north) == BlockFace.SOUTH) {
+			b |= 16;
+		}
+		if (tripwireDataMap.containsKey(south) || tripwireHooks.get(south) == BlockFace.NORTH) {
+			b |= 32;
+		}
+		if (tripwireDataMap.containsKey(west) || tripwireHooks.get(west) == BlockFace.EAST) {
+			b |= 64;
+		}
+
+		Integer newBlockState = connectedBlocks.get(b);
+		return newBlockState == null ? blockState : newBlockState;
+	}
+
+	@AllArgsConstructor
+	@Getter
+	@ToString
+	private static class TripwireData {
+		private final boolean attached, disarmed, powered;
+	}
+}