SolarStrike Software

I will possible take a look on it but isn't it so that I must overwrite the whole player class or can I overwrite single functions?

You can replace a single function. Now let me see. The player class is loaded first, then the userfunctions, then finally the 'player' variable is created. So if you want to overwrite the moveto function, you will have to overwrite the class function so that when the 'player' variable is created it will use the new function. So if you just put that function as it is in a userfunction it should work.