fix racism condition / deadlock

network/network.go

@@ -111,9 +111,18 @@ func HandleServerCommunication(conn net.Conn, playerID int32, player *types.Play
 	for {
 		select {
 		case <-quitChan:
-			<-done // Wait for action goroutine to finish
-			close(done)
-			time.Sleep(100 * time.Millisecond) // Give time for disconnect message to be sent
+			done := make(chan struct{})
+			go func() {
+				<-done
+				close(player.QuitDone)
+			}()
+
+			select {
+			case <-done:
+				time.Sleep(100 * time.Millisecond)
+			case <-time.After(1 * time.Second):
+				log.Println("Shutdown timed out")
+			}
 			return
 		default:
 			// Read message length (4 bytes)