public virtual void RemoveCollidableObject(ICollidable toRemove)
{
IBoxCollidable box = toRemove as IBoxCollidable;
if ((box != null) && (_boxColliders.Contains(box)))
{
_boxColliders.Remove(box); return;
}
ICircularCollidable circle = toRemove as ICircularCollidable;
if ((circle != null) && (_circularColliders.Contains(circle)))
{
_circularColliders.Remove(circle); return;
}
IPolygonCollidable poly = toRemove as IPolygonCollidable;
if ((poly != null) && (_polygonColliders.Contains(poly)))
{
_polygonColliders.Remove(poly); return;
}
ICompoundPolygonCollidable compound = toRemove as ICompoundPolygonCollidable;
if ((compound != null) && (_compoundPolygonColliders.Contains(compound)))
{
_compoundPolygonColliders.Remove(compound); return;
}
}
public bool CircularCollidersHaveCollided(ICircularCollidable subject, ICircularCollidable target)
{
if (PositionedColliderBoundingCircleRequiresUpdate(subject)) { PositionCircularColliderBoundingCircle(subject); }
if (PositionedColliderBoundingCircleRequiresUpdate(target)) { PositionCircularColliderBoundingCircle(target); }
return subject.PositionedCollisionBoundingCircle.Intersects(target.PositionedCollisionBoundingCircle);
}
public virtual void AddCollidableObject(ICollidable toAdd)
{
IBoxCollidable box = toAdd as IBoxCollidable;
if ((box != null) && (!_boxColliders.Contains(box)))
{
_boxColliders.Add(box); return;
}
ICircularCollidable circle = toAdd as ICircularCollidable;
if ((circle != null) && (!_circularColliders.Contains(circle)))
{
_circularColliders.Add(circle); return;
}
IPolygonCollidable poly = toAdd as IPolygonCollidable;
if ((poly != null) && (!_polygonColliders.Contains(poly)))
{
_polygonColliders.Add(poly); return;
}
ICompoundPolygonCollidable compound = toAdd as ICompoundPolygonCollidable;
if ((compound != null) && (!_compoundPolygonColliders.Contains(compound)))
{
_compoundPolygonColliders.Add(compound); return;
}
}
private bool PositionedColliderBoundingCircleRequiresUpdate(ICircularCollidable toCheck)
{
if (!toCheck.WorldPositionIsFixed)
{
return(true);
}
return((toCheck.PositionedCollisionBoundingCircle == Circle.Empty) || (toCheck.PositionedCollisionBoundingCircle == null));
}
private void PositionCircularColliderBoundingCircle(ICircularCollidable sourceCollidable)
{
if (sourceCollidable.PositionedCollisionBoundingCircle == null)
{
sourceCollidable.PositionedCollisionBoundingCircle = Circle.Empty;
}
sourceCollidable.PositionedCollisionBoundingCircle.Center = sourceCollidable.WorldPosition;
sourceCollidable.PositionedCollisionBoundingCircle.Radius = sourceCollidable.CollisionBoundingCircle.Radius;
}
protected void CheckIndividualCircularColliderToAllTypes(ICircularCollidable subject)
{
if (subject.Collidable)
{
CheckIndividualCircularColliderToAllBoxColliders(subject);
CheckIndividualCircularColliderToAllCircularColliders(subject);
// TODO
//CheckIndividualCircularColliderToAllPolygonColliders(_boxColliders[i]);
//CheckIndividualCircularColliderToAllCompoundPolygonColliders(_boxColliders[i]);
}
}
public bool CircularCollidersHaveCollided(ICircularCollidable subject, ICircularCollidable target)
{
if (PositionedColliderBoundingCircleRequiresUpdate(subject))
{
PositionCircularColliderBoundingCircle(subject);
}
if (PositionedColliderBoundingCircleRequiresUpdate(target))
{
PositionCircularColliderBoundingCircle(target);
}
return(subject.PositionedCollisionBoundingCircle.Intersects(target.PositionedCollisionBoundingCircle));
}
private void CheckIndividualCircularColliderToAllCircularColliders(ICircularCollidable subject)
{
if (subject.Collidable)
{
int circularColliderCount = _circularColliders.Count;
for (int i = 0; i < circularColliderCount; i++)
{
if ((_circularColliders[i] != subject) && (_circularColliders[i].Collidable) && (CircularCollidersHaveCollided(subject, _circularColliders[i])))
{
subject.HandleCollision(_circularColliders[i]);
_circularColliders[i].HandleCollision(subject);
}
}
}
}
private void CheckIndividualCircularColliderToAllBoxColliders(ICircularCollidable subject)
{
if (subject.Collidable)
{
int boxColliderCount = _boxColliders.Count;
for (int i = 0; i < boxColliderCount; i++)
{
if ((_boxColliders[i].Collidable) && (BoxAndCircularCollidersHaveCollided(_boxColliders[i], subject)))
{
subject.HandleCollision(_boxColliders[i]);
_boxColliders[i].HandleCollision(subject);
}
}
}
}
private bool PositionedColliderBoundingCircleRequiresUpdate(ICircularCollidable toCheck)
{
if (!toCheck.WorldPositionIsFixed) { return true; }
return ((toCheck.PositionedCollisionBoundingCircle == Circle.Empty) || (toCheck.PositionedCollisionBoundingCircle == null));
}
private void PositionCircularColliderBoundingCircle(ICircularCollidable sourceCollidable)
{
if (sourceCollidable.PositionedCollisionBoundingCircle == null)
{
sourceCollidable.PositionedCollisionBoundingCircle = Circle.Empty;
}
sourceCollidable.PositionedCollisionBoundingCircle.Center = sourceCollidable.WorldPosition;
sourceCollidable.PositionedCollisionBoundingCircle.Radius = sourceCollidable.CollisionBoundingCircle.Radius;
}
private void CheckIndividualCircularColliderToAllCircularColliders(ICircularCollidable subject)
{
if (subject.Collidable)
{
int circularColliderCount = _circularColliders.Count;
for (int i = 0; i < circularColliderCount; i++)
{
if ((_circularColliders[i] != subject) && (_circularColliders[i].Collidable) && (CircularCollidersHaveCollided(subject, _circularColliders[i])))
{
subject.HandleCollision(_circularColliders[i]);
_circularColliders[i].HandleCollision(subject);
}
}
}
}
private void CheckIndividualCircularColliderToAllBoxColliders(ICircularCollidable subject)
{
if (subject.Collidable)
{
int boxColliderCount = _boxColliders.Count;
for (int i = 0; i < boxColliderCount; i++)
{
if ((_boxColliders[i].Collidable) && (BoxAndCircularCollidersHaveCollided(_boxColliders[i], subject)))
{
subject.HandleCollision(_boxColliders[i]);
_boxColliders[i].HandleCollision(subject);
}
}
}
}
protected void CheckIndividualCircularColliderToAllTypes(ICircularCollidable subject)
{
if (subject.Collidable)
{
CheckIndividualCircularColliderToAllBoxColliders(subject);
CheckIndividualCircularColliderToAllCircularColliders(subject);
// TODO
//CheckIndividualCircularColliderToAllPolygonColliders(_boxColliders[i]);
//CheckIndividualCircularColliderToAllCompoundPolygonColliders(_boxColliders[i]);
}
}
