import javax.microedition.lcdui.Canvas;
import javax.microedition.lcdui.Command;
import javax.microedition.lcdui.CommandListener;
import javax.microedition.lcdui.Display;
import javax.microedition.lcdui.Displayable;
import javax.microedition.lcdui.Graphics;
import javax.microedition.lcdui.Image;
import javax.microedition.midlet.MIDlet;
public class Navigate2MIDlet extends MIDlet implements CommandListener {
private Command exitCommand;
Displayable nd;
Image image = null;
public Navigate2MIDlet() {
try {
image = Image.createImage("/J.png");
} catch (Exception e) {
}
Display display = Display.getDisplay(this);
nd = new Navigate2Canvas(image);
exitCommand = new Command("exit", Command.EXIT, 1);
nd.addCommand(exitCommand);
nd.setCommandListener(this);
display.setCurrent(nd);
}
public void startApp() {
}
public void pauseApp() {
}
public void destroyApp(boolean unconditional) {
}
public void commandAction(Command c, Displayable s) {
notifyDestroyed();
}
}
class Navigate2Canvas extends Canvas {
private Image image;
private int newX = 0;
private int newY = 0;
private int stepX = 0;
private int stepY = 0;
public Navigate2Canvas(Image image) {
this.image = image;
newX = 0;
newY = 0;
stepX = getWidth() / 4;
stepY = getHeight() / 4;
}
public void steppingXY(int x, int y) {
newX += x;
newY += y;
}
public void paint(Graphics g) {
int width = this.getWidth();
int height = this.getHeight();
g.setGrayScale(255);
g.fillRect(0, 0, width - 1, height - 1);
g.setGrayScale(0);
g.drawRect(0, 0, width - 1, height - 1);
g.translate(newX, newY);
g.drawImage(image, 0, 0, g.TOP | g.LEFT);
}
protected void keyPressed(int keyCode) {
int gameaction = getGameAction(keyCode);
switch (gameaction) {
case UP:
steppingXY(0, stepY);
break;
case DOWN:
steppingXY(0, -stepY);
break;
case LEFT:
steppingXY(stepX, 0);
break;
case RIGHT:
steppingXY(-stepX, 0);
break;
}
repaint();
}
}