mycanvas.java

J2ME的游戏原代码!希望能帮助有需要帮助的师兄弟们！

//star main canvas

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

public class MyCanvas extends Canvas{
	totathread mythread;
	private ml wps[]; //stars
	private final int heartpos[][]={
			{-20, -2},{-21, -7},{-13, -21}, {-19, -12}, {12, -21}, {-4, -15}, {-1, -11}, {-17, -17}, {-8, -18}, {2, -15}, {7, -18}, {15, -17}, {18, -12}, {20, -7}, {-16, 2}, {-13, 7}, {-9, 11}, {-5, 15},{-1, 19},{3, 15},{7, 11}, {11, 7},{15, 2},{19, -2}
		};

	private final int umbrella[][]={
			{-8,2},{-15,2},{-10,-13},{-23,2},{12,-8},{3,-18},{-1,-23},{-18,-3},{-5,-18},{8,-13},{-14,-8},{17,-3},{21,2},{8,2},{0,2},{-1,-18},{-8,26},{-4,29},{0,26},{0,21},{0,16},{0,11},{0,7},{15,2}
	};
	private final int scWidth = getWidth();
	private final int scHeight= getHeight();
	Random rnd =new Random();
	private Image bkg;
	public int bkgflag;
	boolean onoff= true;
	//constructor
	MyCanvas() {
		try{
		bkg = Image.createImage("/night01.png");
		} catch(IOException e){}
		// making thread obj
		bkgflag =0;
		mythread = new totathread(this);
		makeObjects();
		mythread.start();
	}
	protected void showNotify(){
		onoff = true;
	   	/* Start	Addition		17-03-2003		for external events	*/
	   	bkgflag = 0;
	   	/* End	Addition	17-03-2003	*/

	}

	protected void hideNotify(){
		onoff = false;
	}

	public void makeObjects() {

		wps = new ml[24];

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

		    wps[i] = new ml();

		    int tempx = Math.abs(rnd.nextInt())%(scWidth*100);

		    int tempy = 300 + Math.abs(rnd.nextInt())%((scHeight-45)*100);

		    int tempNum = Math.abs(rnd.nextInt())%2;
		    wps[i].init(tempx,tempy,tempNum);

		}



	}

	public void updatestage(){
		if (onoff){
			repaint();
		}
	}


	//// stars to move
    public void move(){
		int tempNum = Math.abs(rnd.nextInt())%12;
		for(int i = 0; i< wps.length;i++){

			int tempx = 0;
			int tempy = 0;
		    //wps[i].init(tempx,tempy,tempNum);
			if (tempNum == 5){
			     tempx = heartpos[i][0]* 100 + (scWidth/2)*100;
				tempy = heartpos[i][1]*100 + (scHeight/3)*100;
			}else if(tempNum==10){
				 tempx = umbrella[i][0]* 100 + (scWidth/2)*100;
				tempy = umbrella[i][1]*100 + (scHeight/3)*100;
			}else{
				 tempx = Math.abs(rnd.nextInt())%(scWidth*100);
		    	 tempy = 300 + Math.abs(rnd.nextInt())%((scHeight-45)*100);
			}
				wps[i].setmorph(tempx,tempy);
		}
	}



	// draw
	public void paint(Graphics g) {

		g.setColor(0,0,0); // back color
		g.fillRect(0, 0, scWidth, scHeight-35);
		if (bkgflag == 0){
			int offx = (scWidth - 128)/2;
			g.setColor(0,0,0);
			g.fillRect(0, 0, scWidth, scHeight);
			g.drawImage(bkg,0+offx,scHeight -35,Graphics.LEFT | Graphics.TOP);
			bkgflag =1;
		}

		  //---drawing star here-----//
		for(int i = 0; i< wps.length;i++){
            wps[i].update();


			if (wps[i].imgNum == 0){
			g.setColor(255,255,255);
         		g.drawLine(wps[i].x/100 ,wps[i].y/100,wps[i].x/100,wps[i].y/100);
			wps[i].imgNum = Math.abs(rnd.nextInt())%2;

			}else if(wps[i].imgNum ==1){
			g.setColor(145,185,200);
			g.drawLine(wps[i].x/100 -1,wps[i].y/100,wps[i].x/100 +1,wps[i].y/100);
			g.drawLine(wps[i].x/100 ,wps[i].y/100 -1,wps[i].x/100 ,wps[i].y/100+1);
			wps[i].imgNum = Math.abs(rnd.nextInt())%2;
			}else if(wps[i].imgNum ==2){
			g.setColor(145,185,200);
			g.drawLine(wps[i].x/100 -2,wps[i].y/100,wps[i].x/100 +2,wps[i].y/100);
			g.drawLine(wps[i].x/100 ,wps[i].y/100 -2,wps[i].x/100 ,wps[i].y/100+2);
			wps[i].imgNum = Math.abs(rnd.nextInt())%3;
			}
        }

	}

	public void keyPressed(int keyCode){

		int action = getGameAction(keyCode);
		switch(action){
			case LEFT:break;
			case RIGHT:break;
            		case UP:break;
			case FIRE:
			move();
			break;


		}


        repaint();
	}

}