System.out.println("Now using anj's physics.");
} else if (args[0].equals("dan")) {
Physics.setPhysicsMode(new PhysicsDan());
System.out.println("Now using dan's physics.");
} else if (args[0].equals("debug")) {
Physics.setPhysicsMode(new PhysicsDebug());
System.out.println("Now using debug physics.");
} else {
System.out.println("Unknown argument.");
}
}