Hello everybody,
I've been playing with the LunarLander example and tried to make my own
thing out of it...
On the right bottom screen, I've got a tank that is not moving and his
turret that's moving up and down. It's supposed to shoot missiles at
different angles.
I've got a tank, turret and a bullet and they are a Bitmap image.
private Bitmap tank;
private Bitmap turret;
private Bitmap bullet;
Turret only rotates from angle 0 to angle 75, and I did that with the
update...
I managed to get the turret moving but now I'm finding it hard to shoot
missiles.
*doDraw method*
*
*
private void doDraw(Canvas canvas) {
canvas.drawBitmap(backgroundImage, 0, 0, null);
canvas.drawBitmap(tank, x_tank, y_tank, new Paint());
//Rotating the turret
canvas.rotate((float) mHeading, (float) x_turret + mTurretWidth,
y_turret);
canvas.drawBitmap(turret, x_turret, y_turret, new Paint());
??? what should I write here for the bullet to be seen shooting out of that
turret
}
*Update method*
*
*
private void updateGame() {
long now = System.currentTimeMillis();
if (mLastTime > now)
return;
double elapsed = (now - mLastTime) / 1000.0;
if (dUp) // UP key
mHeading += 1 * (PHYS_SLEW_SEC * elapsed);
if (mHeading >= 75) mHeading = 75;
if (dDown) // DOWN key
mHeading += (-1) * (PHYS_SLEW_SEC * elapsed);
if (mHeading < 0) mHeading = 0;
i
f (dSpace){
// Fire bullet SPACE key
??? what should I write here for the bullet to be
seen shooting out of that turret
??? When is the method doDraw being called??
}
m
LastTime = now;
}
Thank you so much guys,
Nick
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