Environment environment = new WorldModel(WORLD_SIZE_X, WORLD_SIZE_Y);
FrameworkLauncher.launchEnvironment(environment, gui, EXECUTION_DELAY);
Lemming a = new Lemming(steering) ;
FrameworkLauncher.launchAgent(a) ;
Lemming b = new Lemming(steering) ;
FrameworkLauncher.launchAgent(b) ;
Lemming c = new Lemming(steering) ;
FrameworkLauncher.launchAgent(c) ;
Lemming d = new Lemming(steering) ;
FrameworkLauncher.launchAgent(d) ;
FrameworkLauncher.startSimulation();
}