Im creating a 2d game for android.
I'll just get right to it. I have a sprite controlled by a joystick that needs to shoot, sofar Ive managed to get direction and movement on my bullet, but then I get stuck.
First of I need a delay for my bullet, cus right now its shooting like 10 bullets/sec, and you prolly know how that looks, like a beam of bullets.
Second there is a problem with the way I update the location for my bullet, my bullet position gets updated every time my sprite-position gets updated. This means that every time I move my character the previous bullets I've fired stop moving, so to be clear, the direction and speed of my bullet is fine, but the way it spawns and updates the old bullets when I move my sprite ( dragging gets set to true ) is really buggy. Maybe every element in my arraylist need a boolean for when its created?
Ill post some relevant code here:
Code for sprite/bullet positon, direction and speed:
if (dragging) {
// get the pos
touchingPoint.x = (int) event.getX();
touchingPoint.y = (int) event.getY();
angle = Math.atan2(touchingPoint.y - inity,
touchingPoint.x - initx) / (Math.PI / 180);
spriteAngle = Math.atan2(touchingPoint.y - inity,
touchingPoint.x - initx) / (Math.PI / 2) + 2;
pointerPosition.y += Math.sin(angle * (Math.PI / 180))
* (touchingPoint.y / 90);
pointerPosition.x += Math.cos(angle * (Math.PI / 180))
* (touchingPoint.y / 90);
bulletPos.y = pointerPosition.y;
bulletPos.x = pointerPosition.x;
if (event.getAction() == MotionEvent.ACTION_DOWN && (int) event.getX() > 650 && (int) event.getX() < 750
&& (int) event.getY() > 300 && (int) event.getY() < 400 ){
shooting = true;
}
if(shooting){
bulletPos.y += Math.sin(angle * (Math.PI / 180)) * 5;
bulletPos.x += Math.cos(angle * (Math.PI / 180)) * 5;
}
Code for drawing my bullet:
private void shootingControl(Canvas canvas){ //is called in drawing-method
if(controls.getShooting() == true){
bullets.add(new Bullets(bullet, controls.bulletPos.x, controls.bulletPos.y));
}
for(int i = 0; i < bullets.size(); i++){
bullets.get(i).draw(canvas);
}
}
Code for bullet-class:
public Bullets(Bitmap bitmap, int x, int y) {
this.bitmap=bitmap;
this.X=x;
this.Y=y;
}
public void draw(Canvas canvas){
canvas.drawBitmap(bitmap, X, Y, null);
}
I've gotten some help from here alrdy regarding some of this, and I kinda feel bad for asking again, but I cant find anything anywhere and I cant figure it out on my own, really tired of being stuck here.
Ive seen some people using gametime in their bullet-positions and alot of people use vectors.
Or if you can redirect me to a good tutorial. I just want to get past this stage of my game!
Thank you!
