public bool DoesBoxIntersect(BoxCollider bc, Vector2 lineStart, Vector2 boxPosition)
{
LineCollider topRight = new LineCollider(new Vector2(boxPosition.X, boxPosition.Y));
LineCollider BottomLeft = new LineCollider(new Vector2(boxPosition.X + bc.Size.X, boxPosition.Y + bc.Size.Y));
if (DoesIntersect(topRight, lineStart, boxPosition + new Vector2(0, bc.Size.Y)))
{
return(true);
}
if (DoesIntersect(topRight, lineStart, boxPosition + new Vector2(bc.Size.X, 0)))
{
return(true);
}
if (DoesIntersect(BottomLeft, lineStart, boxPosition + new Vector2(bc.Size.X, 0)))
{
return(true);
}
if (DoesIntersect(BottomLeft, lineStart, boxPosition + new Vector2(0, bc.Size.Y)))
{
return(true);
}
return(false);
}
public Vector2 Intersection(LineCollider otherLine, Vector2 p1, Vector2 p2)
{
float k1 = (EndPoint.Y - p1.Y) / (EndPoint.X - p1.X);
float k2 = (otherLine.EndPoint.Y - p2.Y) / (otherLine.EndPoint.X - p2.X);
float xIntersect = (p2.Y - p1.Y) / (k1 - k2);
float yIntersect = k1 * xIntersect + p1.Y;
return(new Vector2(xIntersect, yIntersect));
}
public bool DoesIntersect(LineCollider otherLine, Vector2 p1, Vector2 p2)
{
float k1 = (EndPoint.Y - p1.Y) / (EndPoint.X - p1.X);
float k2 = (otherLine.EndPoint.Y - p2.Y) / (otherLine.EndPoint.X - p2.X);
if (k1 == k2)
{
return(false);
}
float xIntersect = (p2.Y - p1.Y) / (k1 - k2);
float yIntersect = k1 * xIntersect + p1.Y;
return(MyMaths.DistanceCubed(p1, EndPoint) < MyMaths.DistanceCubed(p1, new Vector2(xIntersect, yIntersect)));
}
public Vector2 BoxIntersection(BoxCollider bc, Vector2 lineStart, Vector2 boxPosition)
{
LineCollider topRight = new LineCollider(new Vector2(boxPosition.X, boxPosition.Y));
LineCollider BottomLeft = new LineCollider(new Vector2(boxPosition.X + bc.Size.X, boxPosition.Y + bc.Size.Y));
Vector2 intersection = Vector2.Zero;
if (DoesIntersect(topRight, lineStart, boxPosition + new Vector2(0, bc.Size.Y)))
{
intersection = Intersection(topRight, lineStart, boxPosition + new Vector2(0, bc.Size.Y));
}
if (DoesIntersect(topRight, lineStart, boxPosition + new Vector2(bc.Size.X, 0)))
{
Vector2 tempIntersection = Intersection(topRight, lineStart, boxPosition + new Vector2(bc.Size.X, 0));
if (MyMaths.DistanceCubed(lineStart, tempIntersection) > MyMaths.DistanceCubed(lineStart, intersection))
{
intersection = tempIntersection;
}
}
if (DoesIntersect(BottomLeft, lineStart, boxPosition + new Vector2(bc.Size.X, 0)))
{
Vector2 tempIntersection = Intersection(BottomLeft, lineStart, boxPosition + new Vector2(bc.Size.X, 0));
if (MyMaths.DistanceCubed(lineStart, tempIntersection) > MyMaths.DistanceCubed(lineStart, intersection))
{
intersection = tempIntersection;
}
}
if (DoesIntersect(BottomLeft, lineStart, boxPosition + new Vector2(0, bc.Size.Y)))
{
Vector2 tempIntersection = Intersection(BottomLeft, lineStart, boxPosition + new Vector2(0, bc.Size.Y));
if (MyMaths.DistanceCubed(lineStart, tempIntersection) > MyMaths.DistanceCubed(lineStart, intersection))
{
intersection = tempIntersection;
}
}
return(intersection);
}