Platformer.RectangleExtensions.GetIntersectionDepth C# (CSharp) Method

        public static Vector2 GetIntersectionDepth(this RectangleF rectA, RectangleF rectB)
        {
            // Calculate half sizes.
            float halfWidthA = rectA.Width / 2.0f;
            float halfHeightA = rectA.Height / 2.0f;
            float halfWidthB = rectB.Width / 2.0f;
            float halfHeightB = rectB.Height / 2.0f;

            // Calculate centers.
            Vector2 centerA = new Vector2(rectA.Left + halfWidthA, rectA.Top + halfHeightA);
            Vector2 centerB = new Vector2(rectB.Left + halfWidthB, rectB.Top + halfHeightB);

            // Calculate current and minimum-non-intersecting distances between centers.
            float distanceX = centerA.X - centerB.X;
            float distanceY = centerA.Y - centerB.Y;
            float minDistanceX = halfWidthA + halfWidthB;
            float minDistanceY = halfHeightA + halfHeightB;

            // If we are not intersecting at all, return (0, 0).
            if (Math.Abs(distanceX) >= minDistanceX || Math.Abs(distanceY) >= minDistanceY)
                return Vector2.Zero;

            // Calculate and return intersection depths.
            float depthX = distanceX > 0 ? minDistanceX - distanceX : -minDistanceX - distanceX;
            float depthY = distanceY > 0 ? minDistanceY - distanceY : -minDistanceY - distanceY;
            return new Vector2(depthX, depthY);
        }

        private void HandleCollisions()
        {
            // Get the player's bounding rectangle and find neighboring tiles.
            Rectangle bounds     = BoundingRectangle;
            int       leftTile   = (int)Math.Floor((float)bounds.Left / Tile.Width);
            int       rightTile  = (int)Math.Ceiling(((float)bounds.Right / Tile.Width)) - 1;
            int       topTile    = (int)Math.Floor((float)bounds.Top / Tile.Height);
            int       bottomTile = (int)Math.Ceiling(((float)bounds.Bottom / Tile.Height)) - 1;

            // Reset flag to search for ground collision.
            IsOnGround = false;

            // For each potentially colliding tile,
            for (int y = topTile; y <= bottomTile; ++y)
            {
                for (int x = leftTile; x <= rightTile; ++x)
                {
                    // If this tile is collidable,
                    TileCollision collision = game.CurrentLevel.GetCollision(x, y);
                    if (collision != TileCollision.Passable)
                    {
                        // Determine collision depth (with direction) and magnitude.
                        Rectangle tileBounds = game.CurrentLevel.GetBounds(x, y);
                        Vector2   depth      = RectangleExtensions.GetIntersectionDepth(bounds, tileBounds);
                        if (depth != Vector2.Zero)
                        {
                            float absDepthX = Math.Abs(depth.X);
                            float absDepthY = Math.Abs(depth.Y);

                            // Resolve the collision along the shallow axis.
                            if (absDepthY < absDepthX || collision == TileCollision.Platform || collision == TileCollision.Impassable || IsOnGround)
                            {
                                this.Explode();
                                break;
                            }
                        }
                    }
                }
            }

            // Save the new bounds bottom.
            previousBottom = bounds.Bottom;
        }