2014/10/25
import greenfoot.*; // (World, Actor, GreenfootImage, and Greenfoot)
import java.awt.Color;
import java.awt.Graphics;
/**
* Counter that displays a text and number.
*
* @author Michael Kolling
* @version 1.0.1
*/
public class ProtonCounter extends Actor
{
private static final Color textColor = new Color(255, 180, 150);
public static int value = 0;
private int target = 0;
private String text;
private int stringLength;
public ProtonCounter()
{
this("100");
}
public ProtonCounter(String prefix)
{
text = prefix;
stringLength = (text.length() + 2) * 10;
setImage(new GreenfootImage(stringLength, 16));
GreenfootImage image = getImage();
image.setColor(textColor);
updateImage();
}
public void act() {
updateImage();
}
public static int getCharge()
{
return Rocket.protonDelayCount;
}
/**
* Make the image
*/
public void updateImage()
{
GreenfootImage image = getImage();
image.clear();
image.drawString(text + value, 1, 12);
}
}
import greenfoot.*; // (World, Actor, GreenfootImage, and Greenfoot)
import java.awt.Color;
import java.awt.Graphics;
/**
* Counter that displays a text and number.
*
* @author Michael Kolling
* @version 1.0.1
*/
public class Counter extends Actor
{
private static final Color textColor = new Color(255, 180, 150);
public static int value = 0;
private int target = 0;
private String text;
private int stringLength;
public Counter()
{
this("");
}
public Counter(String prefix)
{
text = prefix;
stringLength = (text.length() + 2) * 10;
setImage(new GreenfootImage(stringLength, 16));
GreenfootImage image = getImage();
image.setColor(textColor);
updateImage();
}
public void act() {
updateImage();
}
public int getValue()
{
return value;
}
/**
* Make the image
*/
public void updateImage()
{
GreenfootImage image = getImage();
image.clear();
image.drawString(text + value, 1, 12);
}
}
import greenfoot.*; // (World, Actor, GreenfootImage, and Greenfoot)
import java.awt.Color;
/**
* Space. Something for rockets to fly in.
*
* @author Michael Kolling
* @version 1.0
*/
public class Space extends World
{
private Counter scoreCounter;
private ProtonCounter charge;
private LevelCounter levelCounter;
public int level = 0;
private int asteroids = 2;
public Space()
{
super(600, 400, 1);
GreenfootImage background = getBackground();
background.setColor(Color.BLACK);
background.fill();
Rocket rocket = new Rocket();
Rocket.protonDelayCount = 500;
addObject(rocket, getWidth()/2 + 100, getHeight()/2);
addAsteroids(asteroids);
scoreCounter = new Counter("Score:" + ScoreBoard.score);
addObject(scoreCounter, 60, 380);
charge = new ProtonCounter("Charge: " + ProtonCounter.getCharge());
addObject(charge, 200, 380);
levelCounter = new LevelCounter("Level:" + level);
addObject(levelCounter, 320, 380);
Explosion.initializeImages();
ProtonWave.initializeImages();
Counter.value = 0;
ProtonCounter.value = 0;
LevelCounter.value = 0;
createStars(300);
}
public void act(){
if (numberOfObjects() == 4){
level++;
addAsteroids(asteroids + level);
Greenfoot.playSound("chipquest.wav");
}
}
/**
* Add a given number of asteroids to our world. Asteroids are only added into
* the left half of the world.
*/
private void addAsteroids(int count)
{
for(int i = 0; i < count; i++)
{
int x = Greenfoot.getRandomNumber(getWidth()/2);
int y = Greenfoot.getRandomNumber(getHeight()/2);
addObject(new Asteroid(), x, y);
}
}
private void createStars(int number)
{
GreenfootImage background = getBackground();
for (int i = 0; i < number; i++)
{
int x = Greenfoot.getRandomNumber (getWidth());
int y = Greenfoot.getRandomNumber (getHeight());
int color = 120 - Greenfoot.getRandomNumber(100);
background.setColor(new Color(color, color, color));
background.fillOval(x, y, 2, 2);
}
}
/**
* This method is called when the game is over to display the final score.
*/
public void gameOver()
{
// TODO: show the score board here. Currently missing.
Counter.value = 0;
addObject(new ScoreBoard(ScoreBoard.score), getWidth()/2, getHeight()/2);
ScoreBoard.reset();
level = 0;
}
}import greenfoot.*; // (World, Actor, GreenfootImage, and Greenfoot)
/**
* A rocket that can be controlled by the arrowkeys: up, left, right.
* The gun is fired by hitting the 'space' key. 'z' releases a proton wave.
*
* @author Poul Henriksen
* @author Michael Kolling
*
* @version 1.0
*/
public class Rocket extends SmoothMover
{
private static final int gunReloadTime = 5; // The minimum delay between firing the gun.
private static final int protonReloadTime = 500;
private int reloadDelayCount; // How long ago we fired the gun the last time.
public static int protonDelayCount;
private GreenfootImage rocket = new GreenfootImage("rocket.png");
private GreenfootImage rocketWithThrust = new GreenfootImage("rocketWithThrust.png");
/**
* Initilise this rocket.
*/
public Rocket()
{
reloadDelayCount = 5;
addForce(new Vector(13,0.3));
reloadDelayCount = 5;
}
/**
* Do what a rocket's gotta do. (Which is: mostly flying about, and turning,
* accelerating and shooting when the right keys are pressed.)
*/
public void act()
{
checkKeys();
move();
reloadDelayCount++;
ignite(Greenfoot.isKeyDown("up"));
checkCollision();
reloadDelayCount++;
protonDelayCount++;
}
public void startProtonWave()
{
if (protonDelayCount >= protonReloadTime){
ProtonWave wave = new ProtonWave();
getWorld().addObject(wave, getX(), getY());
protonDelayCount = 0;
}
}
public void ignite(boolean boosterOn)
{
if (boosterOn)
{
setImage (rocketWithThrust);
addForce (new Vector(getRotation(),0.1));
}
else
{
setImage(rocket);
}
}
/**
* Check whether there are any key pressed and react to them.
*/
private void checkKeys()
{
// place code here
if (Greenfoot.isKeyDown("space")){
fire();
}
if (Greenfoot.isKeyDown("left")){
setRotation(getRotation() - 5);
}
if (Greenfoot.isKeyDown("right")){
setRotation(getRotation() + 5);
}
if (Greenfoot.isKeyDown("z")){
startProtonWave();
}
}
private void checkCollision()
{
// place code here
Actor a = getOneIntersectingObject(Asteroid.class);
if (a != null)
{
Space space = (Space) getWorld();
space.addObject(new Explosion(), getX(), getY());
space.removeObject(this);
space.gameOver();
Counter.value = 0;
}
}
/**
* Fire a bullet if the gun is ready.
*/
private void fire()
{
if (reloadDelayCount >= gunReloadTime)
{
Bullet bullet = new Bullet (getMovement().copy(), getRotation());
getWorld().addObject (bullet, getX(), getY());
bullet.move ();
reloadDelayCount = 0;
}
}
}public void act()
{
checkKeys();
move();
reloadDelayCount++;
ignite(Greenfoot.isKeyDown("up"));
checkCollision();
reloadDelayCount++;
protonDelayCount++;
}
public void startProtonWave()
{
if (protonDelayCount >= protonReloadTime){
ProtonWave wave = new ProtonWave();
getWorld().addObject(wave, getX(), getY());
protonDelayCount = 0;
}
}