What do I have to do to be able to use a variable from world in one of my actor classes?
// CASE 1: if variable in world is 'public'
int myWorldVar = ((MyWorld) getWorld()).myVar;
// CASE 2: if variable in world is 'private'
int myWorldVar = ((MyWorld) getWorld()).getMyVar();
// with the following method in the 'MyWorld' class
public int getMyVar()
{
return myVar;
}