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