only send a board if something changed

terrbear · Sep 12, 2021 · 3ad1ef0 · 3ad1ef0
1 parent 345f03b
commit 3ad1ef0
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Showing 2 changed files with 9 additions and 5 deletions.
diff --git a/internal/rpc/board.go b/internal/rpc/board.go
@@ -28,8 +28,10 @@ func (b *Board) Diff(other *Board) *Board {
 		return b
 	}
 
-	diff := Board{
-		Winner: b.Winner,
+	diff := Board{}
+
+	if other.Winner != nil {
+		diff.Winner = other.Winner
 	}
 
 	for i, t := range b.Tiles {

diff --git a/server/main.go b/server/main.go
@@ -189,9 +189,11 @@ func play(w http.ResponseWriter, r *http.Request) {
 			changes := board.Diff(oldBoard)
 			oldBoard = board
 
-			err = c.WriteMessage(websocket.BinaryMessage, game.serializedBoard(changes))
-			if err != nil {
-				log.Println("write:", err)
+			if len(changes.Tiles) > 0 || changes.Winner != nil {
+				err = c.WriteMessage(websocket.BinaryMessage, game.serializedBoard(changes))
+				if err != nil {
+					log.Println("write:", err)
+				}
 			}
 		}
 	}