Help for ohell tricks

A trick is a rotation where each person plays a card into a pile. The person who
leads the trick may play any card they have. The other players must follow suit 
(play a card in the suit led) if they have that suit. Otherwise, they may play 
any card they like. When everyone has played, the winner "takes the trick". The 
winner is the person who played the highest trump card if any trump was played 
or the highest card in the suit led. Cards played in other suits cannot win the 
trick.