mycanvas.java

J2ME的游戏原代码!希望能帮助有需要帮助的师兄弟们！

 //colorbugsCanvas

import javax.microedition.lcdui.*;
import java.util.Random;

public class MyCanvas extends Canvas{
	totathread mythread;
	private bub balls[]; //bub objlist
	private int ballcount = 0;
	private int center_x = getWidth() / 2;	
	private int center_y = getHeight() / 2;
	private int scWidth = getWidth();
	private int scHeight = getHeight();
	private int gx = center_x *100; //target x
	private int gy = center_y *100; //target y
	private Random rnd =new Random();
	private	int tempr;
	private	int tempg;
	private	int tempb; 
	boolean onoff = true;
	//constructor
	MyCanvas() {
		// making thread obj
		mythread = new totathread(this);
		makeObjects();
		mythread.start();
		
	}
	
	protected void showNotify(){
		onoff = true;
	}

	protected void hideNotify(){
		onoff = false;
	}

	public void makeObjects() { 
	
		balls = new bub[8]; // numbers of bugs
		
		

		for(int i = 0; i < balls.length; i++) {
			

		switch(i){
			case 0:	tempr = 255; // yellow
				tempg = 255;
				tempb = 0;
				break;
			case 1:	tempr = 0; // green
				tempg = 255;
				tempb = 0;
				break;
            		case 2: tempr = 46;  //water blue
				tempg = 185;
				tempb = 255;
				break;
			case 3:	tempr = 0;  // blue
				tempg = 0;
				tempb = 255;
			 	break;
			case 4: tempr = 101; // purple 
				tempg = 47;
				tempb = 135;
				break;
			case 5:	tempr = 255; //pink
				tempg = 0;
				tempb = 255;
				break;
			case 6:	tempr = 255;
				tempg = 0;
				tempb = 0;
				break;
			case 7:	tempr = 229;
				tempg = 85;
				tempb = 30;
				break;
		}
		
			balls[i] = new bub(center_x,scHeight +10,tempr,tempg,tempb);

		}

	}

	public void updatestage(){
		if (onoff){
		move();
		repaint();
		}	
	}
	///birth
	public void birth(){
		int yseed;
		if (ballcount == 0){
			for(int i = 0; i < 4;i++){
				if (balls[i].moveFlag ==0){
					balls[i].moveFlag =1;
					balls[i].ox = gx;
					balls[i].oy = gy;
					balls[i].x = gx;
					balls[i].y = gy;
					balls[i].size =100;
				
				
				}
			}
			ballcount = 1;
		}else{
			for(int i =4; i < 8;i++){
				if (balls[i].moveFlag ==0){
					balls[i].moveFlag =1;
					balls[i].ox = gx;
					balls[i].oy = gy;
					balls[i].x = gx ;
					balls[i].y = gy ;
					balls[i].size =100;
					//balls[i].r =Math.abs(rnd.nextInt()%(50)); 
				
				}
			}
			ballcount = 0;

		}
	}
	////move
    	public void move(){

		for (int i = 0; i < balls.length;i++) {
			if (balls[i].moveFlag == 1){
				if (balls[i].size < scWidth*100){
				      if (i < 4){
						balls[i].size = balls[i].size + 50*(1+i);	
					}else {
						balls[i].size = balls[i].size + 50*(i-3);
					}	
				}else{
					balls[i].size = 0;
					balls[i].x = -400;
					balls[i].moveFlag = 0;
				
				}

				
			}		
		}
	
	}	


	// draw
	public void paint(Graphics g) {
		int tempcol;
		g.setColor(0,0,0);
		g.fillRect(0, 0, scWidth, scHeight);		
		g.setColor(220,220,220);
		g.drawLine(gx/100 -2,gy/100,gx/100 +2,gy/100);
		g.drawLine(gx/100 ,gy/100-2,gx/100,gy/100+2);
		for(int i = 0; i < balls.length;i++){
			
			    //偙偙偱bub 僋儔僗傪draw丅
			g.setColor(balls[i].r,balls[i].g,balls[i].b);

			int xx = (balls[i].x/100);
			int yy = (balls[i].y/100);
			g.drawRect(xx- balls[i].size/200 ,yy- balls[i].size/200,balls[i].size/100,balls[i].size/100);
			g.drawRect(xx- balls[i].size/200 +1 ,yy- balls[i].size/200 +1 ,balls[i].size/100 -2,balls[i].size/100-2);
		//	g.drawLine(xx, yy,(xx + balls[i].vx/100), (yy + balls[i].vy/100));
		}
       		
			
	}

	public void keyPressed(int keyCode){
		
		int action = getGameAction(keyCode);
		switch(action){
			case LEFT:
			if (gx < 0){
				gx = scWidth*100;
			}else{ 
			gx -= 500;} 
			break;
			case RIGHT:
			if (gx > scWidth*100){
				gx = 0;
			}else{
			 gx += 500;
			}
			 break;
            		case UP:
			if (gy < 0){
				gy = scHeight *100;
			}else{
			 gy -= 500;
			} 
			break;
			case DOWN:
			if (gy > scHeight*100){
				gy = 0;
			}else{
			 	gy += 500;
			}
			 break;
			case FIRE: birth();	
			
				
		}

		
        repaint();
	}
	
}