XNA 4.0 Game Development by Example Beginner's Guide

Time for action – supporting collision detection

1. Add the properties and methods needed to support collision detection to the Sprite class:

   public Rectangle BoundingBoxRect
   {
       get 
       {
       return new Rectangle(
           (int)location.X + BoundingXPadding,
           (int)location.Y + BoundingYPadding,
           frameWidth - (BoundingXPadding * 2),
           frameHeight - (BoundingYPadding * 2));
       }
   }
   
   public bool IsBoxColliding(Rectangle OtherBox)
   {
       return BoundingBoxRect.Intersects(OtherBox);
   }
   
   public bool IsCircleColliding(Vector2 otherCenter, float otherRadius)
   {
       if (Vector2.Distance(Center, otherCenter) <
           (CollisionRadius + otherRadius))
           return true;
       else
           return false;
   }

What just happened?

The BoundingBoxRect property provides a Rectangle object equivalent to the location and size of the sprite ...