public Ball(int x, int y)
: base(new Vector2(x, y), XP.Load("Ball"))
{
//Offset the graphic to centre
Graphic.Position = -Graphic.Size / 2;
//Collision
Collider = new CircleCollider(Graphic.Size.X / 2, Vector2.Zero);
CollisionTags.Add("Ball");
}
private static bool CollideRectCirc(RectangleCollider a, CircleCollider b)
{
if (a.IntersectsPoint(b.GetCenter()))
return true;
//Check the circle against the four edges of the rectangle
Vector2 pA = a.GetTopLeft();
Vector2 pB = a.GetTopRight();
Vector2 pC = a.GetBottomRight();
Vector2 pD = a.GetBottomLeft();
if (b.IntersectsLine(pA, pB, 0) || b.IntersectsLine(pB, pC, 0) || b.IntersectsLine(pC, pD, 0) || b.IntersectsLine(pD, pA, 0))
return true;
return false;
}
private static bool CollideCircCirc(CircleCollider a, CircleCollider b)
{
Vector2 diff = b.GetCenter() - a.GetCenter();
return (diff.X * diff.X + diff.Y * diff.Y < Math.Pow(XP.Distance(b.GetCenter(), a.GetCenter()),2));
}