make sure judge exists; min players set to 3

game.js

@@ -141,7 +141,7 @@ function roundEnded(game) {
       player.selectedWhiteCardId = null;
     });
     game.Judge++;
-    if (game.Judge >= player.length) {
+    if (game.Judge >= player.length || game.Judge == null || game.Judge == NaN) {
       game.Judge = 0;
     }
     game.players[game.Judge] = false;

views/index.ejs

@@ -109,10 +109,10 @@
       if (name.replace(/\s/g, "").length == 0) {
         name = "路过的假面骑士";
       }
-      var num = prompt("建一个几人房？（必须在4以上，20以下）", "4");
+      var num = prompt("建一个几人房？（必须在3以上，20以下）", "4");
       num = Number(num);
-      if (num == NaN || num < 4) {
-        num = 4;
+      if (num == NaN || num < 3) {
+        num = 3;
       }
       if (num > 20){
         num = 20;