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/*
* The MIT License (MIT)
*
* Copyright (c) 2015 Camil Staps <info@camilstaps.nl>
*
* Permission is hereby granted, free of charge, to any person obtaining a copy
* of this software and associated documentation files (the "Software"), to deal
* in the Software without restriction, including without limitation the rights
* to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
* copies of the Software, and to permit persons to whom the Software is
* furnished to do so, subject to the following conditions:
*
* The above copyright notice and this permission notice shall be included in all
* copies or substantial portions of the Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
* AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
* SOFTWARE.
*/
package com.camilstaps.route66;
import java.util.Random;
/**
* A Driver takes care its car doesn't collide
*
* @author Camil Staps
*/
public class Driver implements Runnable {
private final Car car;
private final Model model;
private final Random r;
private boolean running = false;
private int delay;
public Driver(Car car, Model model) {
this.car = car;
this.model = model;
r = new Random();
}
/**
* Stop running
*/
public void stopRunning() {
running = false;
}
/**
* Resume running
*/
public void resumeRunning() {
if (running == false) {
synchronized (this) {
running = true;
notifyAll();
}
}
}
/**
* Set some approximate delay for {@link Driver#pause()}. The actual delay
* is still pseudorandom.
* @param value
*/
public void setDelay(int value) {
delay = value;
}
@Override
/**
* Forever wait for safety, step and pause for a pseudorandom time.
*/
public synchronized void run() {
running = true;
while (true) {
do {
while (!running) {
try {
wait();
} catch (InterruptedException ex) {
}
}
} while (!model.isSafeLocation(car, car.getNewLocation()));
car.step();
pause();
}
}
/**
* Pause for some pseudorandom time
*/
protected void pause() {
try {
int bonus = 0;
if (Math.abs((System.currentTimeMillis() / 1000) % Model.NUMBEROFCARS - car.getNumber()) < 2) {
bonus = -50;
}
Thread.sleep(Math.abs(r.nextInt(100) + delay + bonus));
} catch (InterruptedException ex) {}
}
}
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