players cannot goto observer in arena

i18n.json

@@ -182,6 +182,7 @@
     "unwelcome_warn_part2": "，您的对手可能会离你而去。",
     "unwelcome_tip_part1": "因为您的对手有",
     "unwelcome_tip_part2": "行为，现在您可以直接离开游戏或投降，不视为强退。",
+	"cannot_to_observer": "竞技匹配中决斗者不允许观战。",
     "athletic_arena_tip": "在竞技匹配中，比赛开始前退出游戏也会视为投降。"
   },
  "ko-kr": {

ygopro-server.coffee

@@ -1308,6 +1308,17 @@ ygopro.stoc_follow 'GAME_MSG', false, (buffer, info, client, server)->
   return
 
 #房间管理
+ygopro.ctos_follow 'HS_TOOBSERVER', true, (buffer, info, client, server)->
+  room=ROOM_all[client.rid]
+  return unless room
+  if room.arena != "athletic" or client.ip == "::ffff:127.0.0.1"
+    return false
+  for player in room.players
+    if player == client
+      ygopro.stoc_send_chat(client, "${cannot_to_observer}", ygopro.constants.COLORS.BABYBLUE)
+      return true
+  return false
+
 ygopro.ctos_follow 'HS_KICK', true, (buffer, info, client, server)->
   room=ROOM_all[client.rid]
   return unless room

ygopro-server.js

@@ -1567,6 +1567,26 @@
     }
   });
 
+  ygopro.ctos_follow('HS_TOOBSERVER', true, function(buffer, info, client, server) {
+    var j, len, player, ref, room;
+    room = ROOM_all[client.rid];
+    if (!room) {
+      return;
+    }
+    if (room.arena !== "athletic" || client.ip === "::ffff:127.0.0.1") {
+      return false;
+    }
+    ref = room.players;
+    for (j = 0, len = ref.length; j < len; j++) {
+      player = ref[j];
+      if (player === client) {
+        ygopro.stoc_send_chat(client, "${cannot_to_observer}", ygopro.constants.COLORS.BABYBLUE);
+        return true;
+      }
+    }
+    return false;
+  });
+  
   ygopro.ctos_follow('HS_KICK', true, function(buffer, info, client, server) {
     var j, len, player, ref, room;
     room = ROOM_all[client.rid];