use score to balance

according to a server owner, the "teamTime" persistent variable isn't defined when a player joins a new team. not sure why because GSC dumps reveal it should be just fine, but just in case, just sort by score instead.

data/cdata/scripts/mp/team_balance.gsc

@@ -1,11 +1,71 @@
-init()
+main()
 {
-    // define the auto balance string in the game array (referenced in gsc dump, but not defined past IW6?)
     precachestring(&"MP_AUTOBALANCE_NOW");
-    game["strings"]["autobalance"] = &"MP_AUTOBALANCE_NOW";
 
-    // define onteamselection callback function used in balanceteams()
+    // use player's score to balance instead player's time on team
-    level.onteamselection = ::set_team;
+    replacefunc(maps\mp\gametypes\_teams::balanceteams, ::balance_teams_stub);
+}
+
+balance_teams_stub()
+{
+    iprintlnbold(&"MP_AUTOBALANCE_NOW");
+
+    allied_players = get_valid_team_array("allies");
+    axis_players = get_valid_team_array("axis");
+    while (is_team_bigger_than(allied_players, axis_players) || is_team_bigger_than(axis_players, allied_players))
+    {
+        if (is_team_bigger_than(allied_players, axis_players))
+        {
+            handle_lowest_score_player(allied_players, "axis");
+        }
+        else if (is_team_bigger_than(axis_players, team))
+        {
+            handle_lowest_score_player(axis_players, "allies");
+        }
+
+        // refresh array for loop
+        allied_players = get_valid_team_array("allies");
+        axis_players = get_valid_team_array("axis");
+    }
+}
+
+get_valid_team_array(team)
+{
+    team_array = [];
+    players = level.players;
+    for (i = 0; i < players.size; i++)
+    {
+        if (!isdefined(players[i].pers["score"])) // was teamTime
+            continue;
+
+        if (isdefined(players[i].pers["team"]) && players[i].pers["team"] == team)
+            team_array[team_array.size] = players[i];
+    }
+    return team_arary;
+}
+
+is_team_bigger_than(team_one, team_two)
+{
+    return (team_one.size > (team_two.size + 1));
+}
+
+handle_lowest_score_player(team, new_team)
+{
+    lowest_score_player = undefined;
+
+    // move the player that has the lowest score (highest teamTime value)
+    for (i = 0; i < team.size; i++)
+    {
+        if (isdefined(team[j].dont_auto_balance))
+            continue;
+
+        if (!isdefined(lowest_score_player))
+            lowest_score_player = team[j];
+        else if (team[j].pers["score"] < lowest_score_player.pers["score"])
+            lowest_score_player = team[j];
+    }
+
+    lowest_score_player set_team(new_team);
 }
 
 set_team(team)
@@ -24,6 +84,4 @@ set_team(team)
 
     self maps\mp\gametypes\_menus::addtoteam(team);
     self maps\mp\gametypes\_menus::endrespawnnotify();
-
-    self maps\mp\gametypes\_teams::updateteamtime(); // defines pers["teamTime"] for balancing
 }