Only send last 5 chat messages

main.go

@@ -154,8 +154,10 @@ func processActions() {
 	currentTick := time.Now().UnixNano() / int64(tickRate)
 	state := &pb.ServerMessage{
 		CurrentTick: currentTick,
+		Players:     make([]*pb.PlayerState, 0, len(players)),
 	}
 
+	// Convert players to PlayerState
 	for id, p := range players {
 		p.Lock()
 		state.Players = append(state.Players, &pb.PlayerState{
@@ -166,9 +168,9 @@ func processActions() {
 		p.Unlock()
 	}
 
-	// Add chat messages to the server message
+	// Add new chat messages to the state
 	chatMutex.RLock()
-	state.ChatMessages = chatHistory
+	state.ChatMessages = chatHistory[max(0, len(chatHistory)-5):] // Only send last 5 messages
 	chatMutex.RUnlock()
 
 	data, err := proto.Marshal(state)