tankcanvas.java

Game MIDlet BanTank Java

package demo;

import java.io.IOException;
import java.util.Random;
import javax.microedition.lcdui.Graphics;
import javax.microedition.lcdui.game.GameCanvas;
import javax.microedition.lcdui.game.LayerManager;
import javax.microedition.lcdui.game.Sprite;
/**
 *
 * @author lynhung_pro
 */
public class TankCanvas extends GameCanvas implements Runnable{
    private static final int SPEED = 3;
    private static final int TIME = 30;
    private Sprite redTank, bullet;
    private boolean interrupted;
    private LayerManager lm;
    private TankDesign design;
    private Sprites sprites;
    private Sprite [] sprite;
    private Random rand;
    private TankRandom spriteRandom;
    private int Level = 2;
    private TankBullet tankBullet;
    private byte direction = GameCanvas.UP;
    public TankCanvas() throws IOException, InterruptedException{
        super(true);
        try{
            Init();
        }catch(IOException Ex){
            Ex.printStackTrace();
        }
    }
    public boolean wallCollides(Sprite sprite){
        return ( sprite.getX() < 0
                || sprite.getY() < 0
                || sprite.getX() > (getWidth() - sprite.getWidth())
                || sprite.getY() > (getHeight() - sprite.getHeight()));
    }
    public boolean spriteCollides(Sprite sprite) {
        boolean hit = false;
            for(int i=0;i<Level;i++){
            if (sprite.collidesWith(
                sprite==this.sprite[i]?redTank:this.sprite[i], true)){
                hit = true;
            }
        }
        return hit;
    }

    public void Init() throws IOException, InterruptedException{
        //Khoi tao cac lop
        design = new TankDesign();
        lm = new LayerManager();
        sprites = new Sprites(design.getImage(),15,15);
        //Khoi tao cac sprite
        redTank = sprites.getRedTank();
        sprites.addTank(lm, redTank, 100, 100);
        sprite = new Sprite[Level];
        for(int i=0;i<Level;i++){
            sprite[i] = sprites.getGreenTank();
            sprites.addTank(lm, sprite[i], 15, 20*i);
        }
        //Hoan tat va ve len man hinh
        design.updateLayerManagerForScreen(lm);
        //Khoi tao luong cho SpriteRandom
        for(int i=0;i<Level;i++){
            spriteRandom = new TankRandom(this, sprite[i]);
            spriteRandom.setSequences(
                    design.greenTankSeqUp, Sprite.TRANS_NONE,
                    design.greenTankSeqDown, Sprite.TRANS_NONE,
                    design.greenTankSeqLeft, Sprite.TRANS_NONE,
                    design.greenTankSeqRight, Sprite.TRANS_NONE);
            (new Thread(spriteRandom)).start();
        }
    }
    public void sleepTime(int time){
        try{
                Thread.sleep(time);
            }catch(InterruptedException Ex){
                Ex.printStackTrace();
        }
    }

    public void gameStop(){
        this.interrupted = true;
    }
    public void shutRedBullet() throws IOException, InterruptedException{
        int xBullet = 0,yBullet = 0;
        final int SIZE = 5;
        if(direction == GameCanvas.UP){
            xBullet = redTank.getX() + SIZE;
            yBullet = redTank.getY();
        }
        if(direction == GameCanvas.DOWN){
            xBullet = redTank.getX() + SIZE;
            yBullet = redTank.getY() + 2*SIZE;
        }
        if(direction == GameCanvas.LEFT){
            xBullet = redTank.getX();
            yBullet = redTank.getY() + SIZE;
        }
        if(direction == GameCanvas.RIGHT){
            xBullet = redTank.getX() + 2*SIZE;
            yBullet = redTank.getY() + SIZE;
        }
        sprites = new Sprites(design.getImage(), 5, 5);
        bullet = sprites.getRedBullet();
        bullet.setPosition(xBullet, yBullet);
        bullet.setVisible(true);
        lm.append(bullet);
        design.updateLayerManagerForScreen(lm);
        tankBullet = new TankBullet(this, bullet, direction);
        (new Thread(tankBullet)).start();
        sleepTime(4*TIME);
    }
        public void shutGreenBullet(Sprite sprite,byte direct) throws IOException, InterruptedException{
        int xBullet = 0,yBullet = 0;
        final int SIZE = 5;
        if(direct == GameCanvas.UP){
            xBullet = sprite.getX() + SIZE;
            yBullet = sprite.getY();
        }
        if(direct == GameCanvas.DOWN){
            xBullet = sprite.getX() + SIZE;
            yBullet = sprite.getY() + 2*SIZE;
        }
        if(direct == GameCanvas.LEFT){
            xBullet = sprite.getX();
            yBullet = sprite.getY() + SIZE;
        }
        if(direct == GameCanvas.RIGHT){
            xBullet = sprite.getX() + 2*SIZE;
            yBullet = sprite.getY() + SIZE;
        }
        sprites = new Sprites(design.getImage(), 5, 5);
        bullet = sprites.getGreenBullet();
        bullet.setPosition(xBullet, yBullet);
        bullet.setVisible(true);
        lm.append(bullet);
        design.updateLayerManagerForScreen(lm);
        tankBullet = new TankBullet(this, bullet, direct);
        (new Thread(tankBullet)).start();
    }
    public void run() {
        Graphics g = getGraphics();
        while(!interrupted){
            int keyState = getKeyStates();
            if ((keyState & LEFT_PRESSED) != 0) {
                direction = GameCanvas.LEFT;
                redTank.setFrameSequence(design.redTankSeqLeft);
                redTank.move(-SPEED, 0);
                if(spriteCollides(redTank)||(wallCollides(redTank))){
                    redTank.move(SPEED, 0);
                }
            } else if ((keyState & RIGHT_PRESSED) != 0) {
                direction = GameCanvas.RIGHT;
                redTank.setFrameSequence(design.redTankSeqRight);
                redTank.move(SPEED, 0);
                if(spriteCollides(redTank)||(wallCollides(redTank))){
                    redTank.move(-SPEED, 0);
                }
            } else if ((keyState & UP_PRESSED) != 0) {
                direction = GameCanvas.UP;
                redTank.setFrameSequence(design.redTankSeqUp);
                redTank.move(0, -SPEED);
                if(spriteCollides(redTank)||(wallCollides(redTank))){
                    redTank.move(0, SPEED);
                }
            } else if ((keyState & DOWN_PRESSED) != 0) {
                direction = GameCanvas.DOWN;
                redTank.setFrameSequence(design.redTankSeqDown);
                redTank.move(0, SPEED);
                if(spriteCollides(redTank)||(wallCollides(redTank))){
                    redTank.move(0, -SPEED);
                }
            }else if((keyState & FIRE_PRESSED) != 0){
                try {
                    
                    shutRedBullet();
                } catch (IOException ex) {
                    ex.printStackTrace();
                } catch (InterruptedException ex) {
                    ex.printStackTrace();
                }
            }else {
            }
            this.lm.paint(g, 0, 0);
            flushGraphics(0, 0, getWidth(), getHeight());
            sleepTime(TIME);
        }
    }

}