let the object move one field to the direction of its head it is necessary,
that there it is computed here what happands if the object runns into a wall..
msDone() -
Method in class de.farafin.snEADy.player.Player
this Method returns the number of milliseconds the player has calculated jet.
msLeft() -
Method in class de.farafin.snEADy.player.Player
this Method returns the number of milliseconds the player has left for his calculation.