Henway3.rar_Henway

import javax.microedition.lcdui.*; import javax.microedition.lcdui.game.*; import java.util.*; import java.io.*; public class HCanvas extends GameCanvas implements Runnable { private Display display; private boolean sleeping; private long frameDelay; private int inputDelay; private Random rand; private Image background; private Image chickenHead; private Sprite chickenSprite; private Sprite[] carSprite = new Sprite[4]; private int[] carYSpeed = new int[4]; private boolean gameOver; private int numLives; private int score; public HCanvas(Display d) { super(true); display = d; // Set the frame rate (30 fps) frameDelay = 33; // Clear the input delay inputDelay = 0; } public void start() { // Set the canvas as the current screen display.setCurrent(this); // Initialize the random number generator rand = new Random(); // Initialize the game variables gameOver = false; numLives = 3; score = 0; // Initialize the background image and chicken and car sprites try { background = Image.createImage("/Highway.png"); chickenHead = Image.createImage("/ChickenHead.png"); chickenSprite = new Sprite(Image.createImage("/Chicken.png"), 22, 22); chickenSprite.setPosition(2, 77); carSprite[0] = new Sprite(Image.createImage("/Car1.png")); carSprite[0].setPosition(27, 0); carYSpeed[0] = 3; carSprite[1] = new Sprite(Image.createImage("/Car2.png")); carSprite[1].setPosition(62, 0); carYSpeed[1] = 1; carSprite[2] = new Sprite(Image.createImage("/Car3.png")); carSprite[2].setPosition(93, 67); carYSpeed[2] = -2; carSprite[3] = new Sprite(Image.createImage("/Car4.png")); carSprite[3].setPosition(128, 64); carYSpeed[3] = -5; } catch (IOException e) { System.err.println("Failed loading images!"); } // Start the animation thread sleeping = false; Thread t = new Thread(this); t.start(); } public void stop() { // Stop the animation sleeping = true; } public void run() { Graphics g = getGraphics(); // The main game loop while (!sleeping) { update(); draw(g); try { Thread.sleep(frameDelay); } catch (InterruptedException ie) {} } } private void update() { // Check to see whether the game is being restarted if (gameOver) { int keyState = getKeyStates(); if ((keyState & FIRE_PRESSED) != 0) { // Start a new game chickenSprite.setPosition(2, 77); gameOver = false; score = 0; numLives = 3; } // The game is over, so don't update anything return; } // Process user input to move the chicken if (++inputDelay > 2) { int keyState = getKeyStates(); if ((keyState & LEFT_PRESSED) != 0) { chickenSprite.move(-6, 0); chickenSprite.nextFrame(); } else if ((keyState & RIGHT_PRESSED) != 0) { chickenSprite.move(6, 0); chickenSprite.nextFrame(); } if ((keyState & UP_PRESSED) != 0) { chickenSprite.move(0, -6); chickenSprite.nextFrame(); } else if ((keyState & DOWN_PRESSED) != 0) { chickenSprite.move(0, 6); chickenSprite.nextFrame(); } checkBounds(chickenSprite, false); // Reset the input delay inputDelay = 0; } // See whether the chicken made it across if (chickenSprite.getX() > 154) { // Play a sound for making it safely across AlertType.WARNING.playSound(display); // Reset the chicken position and increment the score chickenSprite.setPosition(2, 77); score += 25; } // Update the car sprites for (int i = 0; i < 4; i++) { // Move the car sprites carSprite[i].move(0, carYSpeed[i]); checkBounds(carSprite[i], true); // Check for a collision between the chicken and cars if (chickenSprite.collidesWith(carSprite[i], true)) { // Play a sound for losing a chicken AlertType.ERROR.playSound(display); // Check for a game over if (--numLives == 0) { gameOver = true; } else { // Reset the chicken position chickenSprite.setPosition(2, 77); } // No need to continue updating the car sprites break; } } } private void draw(Graphics g) { // Draw the highway background g.drawImage(background, 0, 0, Graphics.TOP | Graphics.LEFT); // Draw the number of remaining lives for (int i = 0; i < numLives; i++) g.drawImage(chickenHead, 180 - ((i + 1) * 8), 170, Graphics.TOP | Graphics.LEFT); // Draw the chicken sprite chickenSprite.paint(g); // Draw the car sprites for (int i = 0; i < 4; i++) carSprite[i].paint(g); if (gameOver) { // Draw the game over message and score g.setColor(255, 255, 255); // white g.setFont(Font.getFont(Font.FACE_MONOSPACE, Font.STYLE_BOLD, Font.SIZE_LARGE)); g.drawString("GAME OVER", 90, 40, Graphics.TOP | Graphics.HCENTER); g.setFont(Font.getFont(Font.FACE_MONOSPACE, Font.STYLE_BOLD, Font.SIZE_MEDIUM)); g.drawString("You scored " + score + " points.", 90, 70, Graphics.TOP | Graphics.HCENTER); } // Flush the offscreen graphics buffer flushGraphics(); } private void checkBounds(Sprite sprite, boolean wrap) { // Wrap/stop the sprite if necessary if (wrap) { // Wrap the sprite around the edges of the screen if (sprite.getX() < -sprite.getWidth()) sprite.setPosition(getWidth(), sprite.getY()); else if (sprite.getX() > getWidth()) sprite.setPosition(-sprite.getWidth(), sprite.getY()); if (sprite.getY() < -sprite.getHeight()) sprite.setPosition(sprite.getX(), getHeight()); else if (sprite.getY() > getHeight()) sprite.setPosition(sprite.getX(), -sprite.getHeight()); } else { // Stop the sprite at the edges of the screen if (sprite.getX() < 0) sprite.setPosition(0, sprite.getY()); else if (sprite.getX() > (getWidth() - sprite.getWidth())) sprite.setPosition(getWidth() - sprite.getWidth(), sprite.getY()); if (sprite.getY() < 0) sprite.setPosition(sprite.getX(), 0); else if (sprite.getY() > (getHeight() - sprite.getHeight())) sprite.setPosition(sprite.getX(), getHeight() - sprite.getHeight()); } } }