Hi does anyone know how to make a GameCanvas visible; This is my code:
import javax.microedition.midlet.*;
import javax.microedition.lcdui.*;
import javax.microedition.lcdui.game.*;
import java.io.IOException;
public class TankCanvas extends GameCanvas implements Runnable {
private Fish fish;
private boolean start;
private LayerManager layerManager;
private Layer layer;
private int width,height;
private double px,py;
public TankCanvas(){
super(true);
layerManager=new LayerManager();
width=this.getWidth();
height=this.getHeight();
try{
fishSprite=this.getFishSprite();
}catch(IOException e){System.out.println(e);}
layerManager.setViewWindow(0, 0,width , height);
System.out.println("The height: "+height+" and the width:
"+width);
createDefaultTank();
System.out.println("end of constructor");
}
/**
* create background
*/
private void createDefaultTank(){
try{
this.water=this.getWater();
water.setPosition(0, 0);
water.setVisible(true);
layerManager.append(water);
System.out.println(layerManager.getSize());
layer=layerManager.getLayerAt(0);
layer.setVisible(true);
}catch(IOException e){System.out.println("IO error");}
}
public void start(){
start=true;
Thread thread=new Thread(this);
thread.start();
}
public void stop(){
start=false;
}
public Image getPlatform_tiles() throws java.io.IOException
{
if (platform_tiles == null) {
// write pre-init user code here
platform_tiles = Image.createImage("/
platform_tiles.png");
}
// write post-init user code here
return this.platform_tiles;
}
public Sprite getFishSprite() throws java.io.IOException
{
if (fishSprite == null) {
// write pre-init user code here
fishSprite = new Sprite(getPlatform_tiles(), 16,
16);
fishSprite.setFrameSequence
(fishSpriteseq001);
// write post-init user code here
}
return fishSprite;
}
public TiledLayer getWater() throws java.io.IOException
{
create tiled layer here......
}
public TiledLayer getObstacle() throws java.io.IOException
{
create tiled layer here....
}
public TiledLayer getPredator() throws java.io.IOException
{
create tiled layer here.....
}
public void render(Graphics g){
try{
this.fishSprite=this.getFishSprite();
System.out.println("sprite position: X :
"+fishSprite.getRefPixelX()+" Y: "+fishSprite.getRefPixelY());
this.fishSprite.setPosition((int)fish.getPoint().getPx(),
(int) fish.getPoint().getPy());
}catch(IOException e){System.out.println("value of the sprite:
"+fishSprite.toString()+e);}
fish.move(fish.getPoint().getPx(), fish.getPoint().getPy
());
}
public void run(){
while(!this.start){
Graphics g=this.getGraphics();
this.render(g);
this.flushGraphics();
try{
Thread.sleep(100);
}catch(InterruptedException e){System.out.println(e);}
}
}
}
import javax.microedition.midlet.*;
import javax.microedition.lcdui.*;
import org.netbeans.microedition.lcdui.SplashScreen;
public class Tank extends MIDlet implements CommandListener {
private boolean midletPaused = false;
private TankCanvas tankCanvas=null;
private Display display;
private Alert alert;
public Tank() {
//initialize everything
alert=new Alert("not showing");
}
public void startMIDlet () {
// write pre-action user code here
if(tankCanvas==null){
//create a new canvas
tankCanvas=new TankCanvas();
tankCanvas.start();
}
System.out.println("Tank: is display visible:
"+tankCanvas.isShown());
this.display=Display.getDisplay(this);
display.setCurrent(tankCanvas);
switchDisplayable (null, getSplashScreen ());
// write post-action user code here
this.switchDisplayable(null, tankCanvas);
}
public void switchDisplayable (Alert alert, Displayable
nextDisplayable) {
// write pre-switch user code here
Display display = getDisplay ();
if (alert == null) {
display.setCurrent (nextDisplayable);
} else {
display.setCurrent (alert, nextDisplayable);
}
// write post-switch user code here
}
public void commandAction (Command command, Displayable displayable) {
// write pre-action user code here
if (displayable == splashScreen) {
if (command == SplashScreen.DISMISS_COMMAND) {
// write pre-action user code here
exitMIDlet ();
// write post-action user code here
}
}
public void exitMIDlet() {
tankCanvas.stop();
}
public void startApp() {
if (midletPaused) {
resumeMIDlet ();
} else {
initialize ();
startMIDlet ();
}
midletPaused = false;
}
public void pauseApp() {
midletPaused = true;
}
public void destroyApp(boolean unconditional) {
tankCanvas.stop();
}
public Display geDisplay(){
some code to create new display
}
}
Thank you i would appreciate any help thank you
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