ABSTRACT

But suppose we want to do a more realistically styled game, for example, a submarine game. Submarines don't start and stop on a dime.When the propeller starts turning, it takes some time for the submarine to start forward. And they don't really have instantaneous brakes-when the engine is shut off, they will drift for quite a while before stopping. Turning is much the same-they will respond slowly to application of the rudder and then straighten out over time.