Common tasks

List the card tables in the scene you are in and say which have a game running. Active() gives the first table with a running game, or null when none.

foreach (CardTableInfo table in CardGames.Tables())
    Log.Info(table.Id + ": " + table.Kind + (table.Active ? ", a game is running" : ", idle"));

CardTableInfo running = CardGames.Active();
if (running != null) Log.Info("A game is running at " + running.Id);

Make Shittypants pay half as much again and Crosseven pay half as much. A factor of 1 is the game’s normal payout. Set the factors again after every save load, and take them back with Clear.

if (CardGames.PayoutFactorsAvailable)
{
    CardGames.SetPayoutFactor(Mod.Id, CardGameKind.ChinaHand, 1.5f);
    CardGames.SetPayoutFactor(Mod.Id, CardGameKind.Ristiseiska, 0.5f);
}

CardGames.Clear(Mod.Id);