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package OO14route66;
import java.util.Random;
import java.util.concurrent.ExecutorService;
import java.util.concurrent.Executors;
/**
* OO1route66 initial class
* @author Pieter Koopman
*
* The initial controller runs as a single thread
*/
public class Controller
{
private int delay = 200; // average sleep time
private final Model model; // the model
private final Random random; // a random generator
private boolean run = true; // car can run in simulation
/**
* The constructor of the controller
* @param model holds the cars
*/
public Controller(Model model) {
this.model = model;
random = new Random();
}
/**
* the run method from Thread
* forever:
* move all cars
* sleep some time
*/
public void run() {
ExecutorService service = Executors.newCachedThreadPool();
for (Car car : model.getCars()) {
service.execute(car.getDriver());
}
}
/**
* wait some pseudo random time
*/
private void pause() {
try { // sleep can throw an exception
Thread.sleep(delay / 2 + random.nextInt(delay));
}
catch (InterruptedException e) { // catch the exception thrown by sleep
System.out.println("An exception in Controller: " + e);
}
}
/**
* make one step with all cars and repaint views.
*/
public void stepAllCars() {
if (run) {
for (int c = 0; c < Model.NUMBEROFCARS; c += 1) {
model.getCar(c).step();
}
}
model.update(); // update only after all cars have stepped
}
/**
* stop all cars by setting boolean run to false
*/
public void stopCars() {
run = false;
}
/**
* start all cars by setting boolean run to true
*/
public void resumeCars() {
run = true;
}
public int getDelay() {
return delay;
}
/**
* set delay between maximum and minimum bounds
* @param d
*/
public void setDelay(int d) {
delay = Math.max(50, Math.min (2000, d));
}
}
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