public static collision_t isColliding(ball_t ball)
{
foreach (ball_t registeredBall in registry)
{
if (registeredBall != ball && registeredBall.shape.GetGlobalBounds().Intersects(ball.shape.GetGlobalBounds()))
{
/*
* // conservation of momentum: m*v = M, net momentum is conserved through collision
* // (r.m*r.vx)/b.m == b.vx
* // (r.m*r.vy)/b.m == b.vy
* // where r is object we're colliding with and b is us, m is maass and v is velocity
* Vector2f calcVelocity = new Vector2f();
* calcVelocity.X = (registeredBall.shape.Radius * registeredBall.velocity.X) / ball.shape.Radius;
* calcVelocity.Y = (registeredBall.shape.Radius * registeredBall.velocity.Y) / ball.shape.Radius;
* return new collision_t(true, calcVelocity);
*/
float forceCalc = 10 / ((ball.shape.Radius * TEMP_vecLen(ball.velocity) > registeredBall.shape.Radius * TEMP_vecLen(registeredBall.velocity)) ? (ball.shape.Radius * TEMP_vecLen(ball.velocity)) : registeredBall.shape.Radius * TEMP_vecLen(registeredBall.velocity));
return(new collision_t(true, forceCalc));
}
}
return(new collision_t(false, 1f));
}
private void RunPhysics(Vector2f forces)
{
//temp place for collision stuff
Vector2f center = new Vector2f(this.shape.Position.X + (this.shape.GetLocalBounds().Width / 2), this.shape.Position.Y + (this.shape.GetLocalBounds().Height / 2));
bool isValidPositionX = ((center.X > (1280 - (this.shape.GetLocalBounds().Width / 2)) || (center.X < (0 + (this.shape.GetLocalBounds().Width / 2)))));
bool isValidPositionY = ((center.Y > (720 - (this.shape.GetLocalBounds().Height / 2))) || center.Y < (0 + (this.shape.GetLocalBounds().Height / 2)));
if ((isValidPositionX || isValidPositionY) || collisionHandler.isColliding(this).colliding)
{
//this.shape.Position = new Vector2f(1280 / 2, 720 / 2);
this.velocity.X *= isValidPositionX ? -1f : 1f;
this.velocity.Y *= isValidPositionY ? -1f : 1f;
this.velocity /= 2f;
this.shape.Position += new Vector2f(0, -.1F);
this.shape.Position = new Vector2f(Math.Clamp(this.shape.Position.X, 0, 1280), Math.Clamp(this.shape.Position.Y, 0, 720));
//Console.WriteLine("COLLISION: "+this.velocity.Y.ToString());
}
Vector2f oldPosition = this.shape.Position;
this.shape.Position += this.velocity;
ball_t dummy = this;
dummy.shape.Position = this.shape.Position;
collision_t simCollision = collisionHandler.isColliding(dummy);
if (simCollision.colliding)
{
this.shape.Position = oldPosition;
this.velocity *= -1;
this.velocity /= 2f;
//this.velocity *= simCollision.force;
}
if ((Math.Abs(this.velocity.X) < 1) && (Math.Abs(this.velocity.Y) < 1))
{
this.velocity += forces;
}
}