Duvida

Mobile
#1

alguem pode me dizer como fazer com que a nave se colida com o meteoro ?
preciso usar sprites mesmo ?

[code]import java.io.IOException;

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

class Tela extends GameCanvas implements Runnable {

public Image nave, fundo, meteoro;
Graphics g;
Thread t;

public Tela() {
	super(true);
	g = getGraphics();
	try {
		fundo = Image.createImage("/fundo.png");
		meteoro = Image.createImage("/meteoro.png");
		nave = Image.createImage("/nave.png");
	} catch (IOException e) {}
	
		t = new Thread(this);
		t.start();
}

public void run() {
	int xM = 0; //coordenada  X do meteoro 
	int yM = 0; //coordenada Y do meteoro
	
	int xNave = 100; //coordenada X da nave
	int yNave = 200; //coordenada Y da nave
	
	int velx = 5; // velocidade horizontal
	int vely = 2; // velocidade vertical
	
	int velNaveX = 3; 
	int velNaveY = 3;
	
	int altura = getHeight();
	int largura = getWidth();
	int tecla;
	
	while (true) {
		g.drawImage(fundo, 0, 0, Graphics.TOP | Graphics.LEFT);
		g.drawImage(meteoro, xM, yM, Graphics.TOP | Graphics.LEFT);
		g.drawImage(nave, xNave, yNave, Graphics.TOP | Graphics.LEFT);
		try {
			t.sleep(1);
		} catch (InterruptedException e) {}
		
		//-------------------------------------------------
		
		tecla = getKeyStates();
		
		if((tecla & UP_PRESSED) != 0)
			yNave = Math.max(0, yNave - velNaveY);
		if((tecla & DOWN_PRESSED) != 0){
			if((yNave + nave.getHeight()) < altura)
				yNave = yNave + velNaveY;
		}
		
		if ((tecla & LEFT_PRESSED) != 0) {
			if (!(xNave <= 0)) {
				xNave -= 4;
			}
		} else if ((tecla & RIGHT_PRESSED) != 0) {
			if (!(xNave + nave.getWidth() >= getWidth())) {
				xNave += 4;
			}
		}
		
		//-------------------------------------------------
		
		xM = xM + velx;
		yM = yM + vely;
		
		if ((xM + meteoro.getWidth()) > largura || (xM < 0))
			velx = -velx;
		if ((yM + meteoro.getHeight()) > altura || (yM < 0))
			vely = -vely;
		
		//------------------------------------------------	
		
		flushGraphics();
	}
}

}[/code]

#2

o galera consegui tirar minha duvida.
agora vou tentar fazer colidir usando o collideswith.

#3