November 22, 2008 06:54am pst

1. jgordos 7,500
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1. ozo 42,214
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3. bcladd 8,200
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12.13.2004 at 08:27AM PST, ID: 21240523

	[x] Attachment Details

[x]

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6.6

Colliding balls and reflection angles

Asked by vroksjab in Physics & Artificial Intelligence in Game Programming

Tags: physics

Hi!

I'm writing a game(c#) based on the old one called "Jezzball". My problem is the ball physics.

I have a class for the balls

class Ball
{
      Point pos;
      Vector speed;
      int diameter;
      . . .
      static public void Collide(Ball a, Ball b)
      {
            //How do I calculate the new angles and velocities
      }
}

struct Vector
{
      float x,y;
      . . .
      public static double DotProduct( Vector v1, Vector v2)
      {
            return v1.x*v2.x + v1.y*v2.y;
      }
}

I know when the balls collide and then the static Collide-method is called passing the two colliding balls as parameters.
So how do i calculate the ball-reflection angles. I've read something about the Dot(or was i Cross) product but I don't know more about it than the methoid above . . .

I havn't read anything about vectors in school yet so please explain the calculations.Start Free Trial

Keywords: Colliding balls and reflection angles

	Title
1	2D Ball collision
2	Bouncing balls
3	How do I calculate angles with vector …
4	Calculating angles on collision
5	Equation of collision of balls
6	Propel a ball without spin

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20080716-EE-VQP-32

Colliding balls and reflection angles

Asked by vroksjab in Physics & Artificial Intelligence in Game Programming

Tags: physics

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