bonus.java

Java射击小游戏源代码和图片都在里面可以直接玩的！

import java.util.Random;

import javax.microedition.lcdui.Graphics;
import javax.microedition.lcdui.Image;
import javax.microedition.lcdui.game.Sprite;


public class Bonus extends Sprite {

	private boolean isAlive=false;
	public int bonusType;
	public final static int ADD_BULLET_BONUS=0;
	public final static int SPEED_UP_BONUS=1;
	public final static int ADD_LIFE_BONUS=2;
	public final static int DISPERSE_BULLET_BOUNS=3;
    public final static int ADD_SCORE=4;
	private int frameWidth,frameHeight;
	private int canvasWidth,canvasHeight;
	private Image imgBonus;
	private Bonus bonus;
	private Random random;
	private int direction;
	public final static int LEFT_DOWN=0;
	public final static int RIGHT_DOWN=2;
	public final static int MIDDLE_DOWN=1;

	public final static int RIGHT_UP=3;
	public final static int UP_UP=4;
	public final static int LEFT_UP=5;

	private int reflexNum;
	
	public Bonus(Image image, int frameWidth, int frameHeight,int bonusType) {
		super(image, frameWidth, frameHeight);
		// TODO Auto-generated constructor stub
		imgBonus=image;
		this.bonusType=bonusType;
		this.frameWidth = frameWidth;
		this.frameHeight = frameHeight;
		defineReferencePixel(frameWidth / 2, frameHeight / 2);
		random=new Random();
		direction = (random.nextInt() & 0x0fffffff) % 3;
		reflexNum=0;
	}
	public void setCanvasSize(int canvasWidth, int canvasHeight) {
		this.canvasWidth = canvasWidth;
		this.canvasHeight = canvasHeight;
	}
	public void setAlive(int x, int y) {
		isAlive = true;
		setPosition(x, y);
	}
	public void setAlive(boolean isAlive) {
		this.isAlive = isAlive;
	}
	public boolean isAlive() {
		return isAlive;
	}
	public Image getImage(){
		return imgBonus;
	}
	public void tick(){
		if (isAlive) {
			switch (direction) {
			case LEFT_DOWN:
				move(-4, 4);
				break;
			case RIGHT_DOWN:
				move(4, 4);
				break;
			case MIDDLE_DOWN:
				move(0, 6);
				break;
			case RIGHT_UP:
				move(4, -4);
				break;
			case UP_UP:
				move(0, -4);
				break;
			case LEFT_UP:
				move(-4, -4);
				break;
			}
			if (getX() <= 0) {
				switch (direction) {
				case LEFT_DOWN:
					direction = RIGHT_DOWN;
					break;
				case LEFT_UP:
					direction = RIGHT_UP;
					break;
				}
				reflexNum++;
			}
			if (getX() >= canvasWidth-frameWidth) {
				switch (direction) {
				case RIGHT_DOWN:
					direction = LEFT_DOWN;
					break;
				case RIGHT_UP:
					direction = LEFT_UP;
					break;
				}
				reflexNum++;
			}
			if (getY() <= 0) {
				switch (direction) {
				case LEFT_UP:
					direction = LEFT_DOWN;
					break;
				case UP_UP:
					direction = MIDDLE_DOWN;
					break;
				case RIGHT_UP:
					direction = RIGHT_DOWN;
					break;
				}
				reflexNum++;
			}
			if (getY() >= canvasHeight-frameHeight) {
				switch (direction) {
				case LEFT_DOWN:
					direction = LEFT_UP;
					break;
				case MIDDLE_DOWN:
					direction = UP_UP;
					break;
				case RIGHT_DOWN:
					direction = RIGHT_UP;
					break;
				}
				reflexNum++;
			}
			if (reflexNum == 3) {
				isAlive = false;
			}
		}
		
//		if(isAlive){
//			move(4,4);
//			if(getY()>canvasHeight){
//				isAlive=false;
//			}
//		}
	}
	public void getBonus(Bonus bonus){
		this.bonus=bonus;
	}
//	public void draw(Graphics g){
//		switch (bonusType) {
//		case ADD_BULLET_BONUS:
//			//g.setClip(bonus.getX(), bonus.getY(), 14, 13);
//			g.drawImage(imgBonus, bonus.getX(), bonus.getY(), 0);
//			break;
//		case SPEED_UP_BONUS:
//			//g.setClip(bonus.getX(), bonus.getY(), 14, 13);
//			g.drawImage(imgBonus, bonus.getX(), bonus.getY(), 0);
//			break;
//		case ADD_LIFE_BONUS:
//			//g.setClip(bonus.getX(), bonus.getY(), 14, 13);
//			g.drawImage(imgBonus, bonus.getX(), bonus.getY(), 0);
//			break;
//		}
//	}


}