per player hand restrictions

* optimized code

src/main/java/one/oth3r/sit/PacketBuilder.java

@@ -0,0 +1,34 @@
+package one.oth3r.sit;
+
+import net.fabricmc.fabric.api.client.networking.v1.ClientPlayNetworking;
+import net.fabricmc.fabric.api.networking.v1.PacketByteBufs;
+import net.minecraft.network.PacketByteBuf;
+import net.minecraft.util.Identifier;
+
+import java.nio.ByteBuffer;
+import java.nio.charset.StandardCharsets;
+
+public class PacketBuilder {
+    public static final String SETTINGS = "settings_v1.0";
+    private final String message;
+    private PacketByteBuf packetByteBuf = PacketByteBufs.create();
+    public PacketBuilder(PacketByteBuf buf) {
+        // Read any data sent in the packet
+        message = StandardCharsets.UTF_8.decode(ByteBuffer.wrap(buf.array())).toString().trim();
+        packetByteBuf = buf;
+    }
+    public PacketBuilder(String message) {
+        this.message = message;
+        packetByteBuf.writeBytes(ByteBuffer.wrap(message.getBytes(StandardCharsets.UTF_8)).array());
+    }
+    public static Identifier getIdentifier() {
+        // only 1 packet rn
+        return new Identifier(Sit.MOD_ID, SETTINGS);
+    }
+    public void send() {
+        ClientPlayNetworking.send(getIdentifier(), packetByteBuf);
+    }
+    public String getMessage() {
+        return this.message;
+    }
+}