if something is true, do something,
else, do something else.
fin.
He'll probably throw some crappy boolean that's hard to understand if it's true or not. Cool little facts to know: Anything that != 0, is true, if interpreted as a boolean. Anything with the nice && operator requires the two adjacent booleans to be true to pass. If the || operator is used, it requires one OR the other to be true. If I remember, 'or' and 'and' can also replace the && and || operators.