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### #ActualDavid.M

Posted 12 August 2012 - 04:08 PM

If you want to make a ball at some random position I would do something like the below.

ArrayList<Ball> balls = new ArrayList<Ball>();
private Ball makeBall()
{
Random rand = new Random();
Ball newBall = new Ball();
newBall.x = rand.nextFloat() * FRUSTUM_WIDTH;
newBall.y = rand.nextFloat() * FRUSTUM_HEIGHT;
return newBall;
}

//Option 2: add the ball to the list inside the method
private void newBall()
{
Random rand = new Random();
balls.add(new Ball(rand.nextFloat() * FRUSTUM_WIDTH, rand.nextFloat() * FRUSTUM_HEIGHT,
}


This would have a ball class which stores an x and y position and a radius. The list will store all the balls and be looped through to update and render the balls. Option 1 has a blank constructor and the fields (x, y, radius) must be initialized manually. Option 2 has a constructor public Ball(float xPosition, float yPosition, float radius).

Edit: Then you would call this
for(int i = 0; i < balls.size(); i++)
{
float x = balls.get(i).getX();
float y = balls.get(i).getY();
//check collisions here
}

### #4David.M

Posted 12 August 2012 - 04:07 PM

If you want to make a ball at some random position I would do something like the below.

ArrayList<Ball> balls = new ArrayList<Ball>();
private Ball makeBall()
{
Random rand = new Random();
Ball newBall = new Ball();
newBall.x = rand.nextFloat() * FRUSTUM_WIDTH;
newBall.y = rand.nextFloat() * FRUSTUM_HEIGHT;
return newBall;
}

//Option 2: add the ball to the list inside the method
private void newBall()
{
Random rand = new Random();
balls.add(new Ball(rand.nextFloat() * FRUSTUM_WIDTH, rand.nextFloat() * FRUSTUM_HEIGHT,
}


This would have a ball class which stores an x and y position and a radius. The list will store all the balls and be looped through to update and render the balls. Option 1 has a blank constructor and the fields (x, y, radius) must be initialized manually. Option 2 has a constructor public Ball(float xPosition, float yPosition, float radius).

Edit: Then you would call this
for(int i = 0; i < balls.size(); i++)
{
float x = balls.get(i).getX();
float y = balls.get(i).getY();
//check collisions here
}

### #3David.M

Posted 12 August 2012 - 04:07 PM

If you want to make a ball at some random position I would do something like the below.

ArrayList<Ball> balls = new ArrayList<Ball>();
private Ball makeBall()
{
Random rand = new Random();
Ball newBall = new Ball();
newBall.x = rand.nextFloat() * FRUSTUM_WIDTH;
newBall.y = rand.nextFloat() * FRUSTUM_HEIGHT;
return newBall;
}

//Option 2: add the ball to the list inside the method
private void newBall()
{
Random rand = new Random();
}


This would have a ball class which stores an x and y position and a radius. The list will store all the balls and be looped through to update and render the balls. Option 1 has a blank constructor and the fields (x, y, radius) must be initialized manually. Option 2 has a constructor public Ball(float xPosition, float yPosition, float radius).

Edit: Then you would call this
for(int i = 0; i < balls.size(); i++)
{
float x = balls.get(i).getX();
float y = balls.get(i).getY();
//check collisions here
}

### #2David.M

Posted 12 August 2012 - 04:06 PM

If you want to make a ball at some random position I would do something like the below.

ArrayList<Ball> balls = new ArrayList<Ball>();
private Ball makeBall()
{
Random rand = new Random();
Ball newBall = new Ball();
newBall.x = rand.nextFloat() * FRUSTUM_WIDTH;
newBall.y = rand.nextFloat() * FRUSTUM_HEIGHT;
return newBall;
}

//Option 2: add the ball to the list inside the method
private void newBall()
{
Random rand = new Random();


This would have a ball class which stores an x and y position and a radius. The list will store all the balls and be looped through to update and render the balls. Option 1 has a blank constructor and the fields (x, y, radius) must be initialized manually. Option 2 has a constructor public Ball(float xPosition, float yPosition, float radius).

Edit: Then you would call this
for(int i = 0; i < balls.size(); i++)
{
float x = balls.get(i).getX();
float y = balls.get(i).getY();
//check collisions here
}

### #1David.M

Posted 12 August 2012 - 04:03 PM

If you want to make a ball at some random position I would do something like the below.

ArrayList<Ball> balls = new ArrayList<Ball>();
private Ball makeBall()
{
Random rand = new Random();
Ball newBall = new Ball();
newBall.x = rand.nextFloat() * FRUSTUM_WIDTH;
newBall.y = rand.nextFloat() * FRUSTUM_HEIGHT;