Send executor id with execution progress

src/main/java/net/fretux/knockedback/ExecutionProgressPacket.java

@@ -3,26 +3,37 @@ package net.fretux.knockedback;
 import net.minecraft.network.FriendlyByteBuf;
 import net.minecraftforge.network.NetworkEvent;
 
+import javax.annotation.Nullable;
+import java.util.UUID;
 import java.util.function.Supplier;
 
 public class ExecutionProgressPacket {
     private final int timeLeft;
+    @Nullable
+    private final UUID executorId;
 
-    public ExecutionProgressPacket(int timeLeft) {
+    public ExecutionProgressPacket(int timeLeft, @Nullable UUID executorId) {
         this.timeLeft = timeLeft;
+        this.executorId = executorId;
     }
 
     public static void encode(ExecutionProgressPacket msg, FriendlyByteBuf buf) {
         buf.writeInt(msg.timeLeft);
+        buf.writeBoolean(msg.executorId != null);
+        if (msg.executorId != null) {
+            buf.writeUUID(msg.executorId);
+        }
     }
 
     public static ExecutionProgressPacket decode(FriendlyByteBuf buf) {
-        return new ExecutionProgressPacket(buf.readInt());
+        int timeLeft = buf.readInt();
+        UUID executorId = buf.readBoolean() ? buf.readUUID() : null;
+        return new ExecutionProgressPacket(timeLeft, executorId);
     }
 
     public static void handle(ExecutionProgressPacket msg, Supplier<NetworkEvent.Context> ctx) {
         ctx.get().enqueueWork(() -> {
-            net.fretux.knockedback.client.ClientExecutionState.setTimeLeft(msg.timeLeft);
+            net.fretux.knockedback.client.ClientExecutionState.setExecution(msg.timeLeft, msg.executorId);
         });
         ctx.get().setPacketHandled(true);
     }