// Check raycast collision
public override RaycastHit CheckRay(Vector2 start, Vector2 direction)
{
Vector2[] points = GetPoints();
Vector2 end = start + direction;
LineHit closest = PhysicsUtils.CheckLineCollision(points[3], points[0], start, end);
for (int i = 0; i <= 2; i++)
{
Vector2 p1 = points[i];
Vector2 p2 = points[i + 1];
LineHit hit = PhysicsUtils.CheckLineCollision(p1, p2, start, end);
if (hit.hit)
{
if (!closest.hit || Vector2.Distance(hit.hitPoint, start) < Vector2.Distance(closest.hitPoint, start))
{
closest = hit;
}
}
}
if (!closest.hit)
{
return(null);
}
RaycastHit raycastHit = new RaycastHit(closest.hitPoint, entity, Vector2.Distance(closest.hitPoint, start));
return(raycastHit);
}
// Find the hitpoints of two colliding polygons via Line collision
public Vector2[] FindPolygonHitpoints(Line[] poly1, Line[] poly2)
{
List <Vector2> collisionPoints = new List <Vector2>();
foreach (Line line1 in poly1)
{
foreach (Line line2 in poly2)
{
LineHit lineHit = PhysicsUtils.CheckLineCollision(line1.p1, line1.p2, line2.p1, line2.p2);
if (lineHit.hit)
{
collisionPoints.Add(lineHit.hitPoint);
}
}
}
return(collisionPoints.ToArray());
}