I created a camera that follows behind the player using this code:

camera.x = snowman.x - 250 * sin(snowman.pan);
camera.y = snowman.y + 250 * cos(snowman.pan);
camera.pan = snowman.pan-90;
camera.z = snowman.z + 180;

This camera code works fine for the first level and there are no problems. When I load my second level, the camera does not stay nicely behind the object, but rather "lags" as the object moves forward faster than the camera. Any ideas?