/// <summary>
/// Detects all collisions between the body and all the registered
/// collision skins (which should have already had their
/// positions/bounding volumes etc updated). For each potential
/// pair of skins then the predicate (if it exists) will be called
/// to see whether or not to continue. If the skins are closer
/// than collTolerance (+ve value means report objects that aren't
/// quite colliding) then the functor will get called.
/// You can't just loop over all your bodies calling this, because
/// that will double-detect collisions. Use DetectAllCollisions for
/// that.
/// </summary>
public abstract void DetectCollisions(Body body, CollisionFunctor collisionFunctor,
CollisionSkinPredicate2 collisionPredicate, float collTolerance);
/// <summary>
/// As DetectCollisions but detects for all bodies, testing each pair
/// only once
/// </summary>
/// <param name="bodies"></param>
/// <param name="collisionFunctor"></param>
/// <param name="collisionPredicate"></param>
/// <param name="collTolerance"></param>
public abstract void DetectAllCollisions(List<Body> bodies, CollisionFunctor collisionFunctor,
CollisionSkinPredicate2 collisionPredicate, float collTolerance);
public override void DetectCollisions(Body body, CollisionFunctor collisionFunctor, CollisionSkinPredicate2 collisionPredicate, float collTolerance)
{
if (!body.IsActive)
return;
CollDetectInfo info = new CollDetectInfo();
info.Skin0 = body.CollisionSkin; //?!
if (info.Skin0 == null) return;
int bodyPrimitves = info.Skin0.NumPrimitives;
int numSkins = skins.Count;
for (int skin = 0; skin < numSkins; ++skin)
{
info.Skin1 = skins[skin];
if ((info.Skin0 != info.Skin1) && CheckCollidables(info.Skin0, info.Skin1))
{
int primitives = info.Skin1.NumPrimitives;
for (info.IndexPrim0 = 0; info.IndexPrim0 < bodyPrimitves; ++info.IndexPrim0)
{
for (info.IndexPrim1 = 0; info.IndexPrim1 < primitives; ++info.IndexPrim1)
{
DetectFunctor f = GetCollDetectFunctor(info.Skin0.GetPrimitiveNewWorld(info.IndexPrim0).Type,
info.Skin1.GetPrimitiveNewWorld(info.IndexPrim1).Type);
if (f != null) f.CollDetect(info, collTolerance, collisionFunctor);
}
}
}
}
}
public override void DetectAllCollisions(List<Body> bodies, CollisionFunctor collisionFunctor, CollisionSkinPredicate2 collisionPredicate, float collTolerance)
{
int numSkins = skins.Count;
int numBodies = bodies.Count;
CollDetectInfo info = new CollDetectInfo();
for (int ibody = 0; ibody < numBodies; ++ibody)
{
Body body = bodies[ibody];
if(!body.IsActive)
continue;
info.Skin0 = body.CollisionSkin;
if (info.Skin0 == null)
continue;
for (int skin = 0; skin < numSkins; ++skin)
{
info.Skin1 = skins[skin];
if (info.Skin0 == info.Skin1)
continue;
// CHANGE
if (info.Skin1 == null)
continue;
bool skinSleeping = true;
if (info.Skin1.Owner != null && info.Skin1.Owner.IsActive)
skinSleeping = false;
if ((skinSleeping == false) && (info.Skin1.ID < info.Skin0.ID))
continue;
if((collisionPredicate != null) &&
collisionPredicate.ConsiderSkinPair(info.Skin0,info.Skin1) == false)
continue;
// basic bbox test
if(BoundingBoxHelper.OverlapTest(ref info.Skin0.WorldBoundingBox,
ref info.Skin1.WorldBoundingBox,collTolerance))
{
if (CheckCollidables(info.Skin0,info.Skin1))
{
int bodyPrimitives = info.Skin0.NumPrimitives;
int primitves = info.Skin1.NumPrimitives;
for(info.IndexPrim0 = 0; info.IndexPrim0 < bodyPrimitives; ++info.IndexPrim0)
{
for (info.IndexPrim1 = 0; info.IndexPrim1 < primitves; ++info.IndexPrim1)
{
DetectFunctor f = GetCollDetectFunctor(info.Skin0.GetPrimitiveNewWorld(info.IndexPrim0).Type,
info.Skin1.GetPrimitiveNewWorld(info.IndexPrim1).Type);
if (f != null)
f.CollDetect(info, collTolerance, collisionFunctor);
}
}
}
} // overlapt test
} // loop over skins
} // loop over bodies
}
public override void DetectAllCollisions(List<Body> bodies, CollisionFunctor collisionFunctor, CollisionSkinPredicate2 collisionPredicate, float collTolerance)
{
int numBodies = bodies.Count;
CollDetectInfo info = new CollDetectInfo();
for (int iBody = 0; iBody < numBodies; ++iBody)
{
Body body = bodies[iBody];
if (!body.IsActive)
continue;
info.Skin0 = body.CollisionSkin;
if (info.Skin0 == null)
continue;
tempGridLists.Clear();
GetListsToCheck(tempGridLists, info.Skin0);
for (int iList = tempGridLists.Count; iList-- != 0; )
{
// first one is a placeholder;
GridEntry entry = tempGridLists[iList];
for (entry = entry.Next; entry != null; entry = entry.Next)
{
info.Skin1 = entry.Skin;
if (info.Skin1 == info.Skin0)
continue;
// CHANGE
if (info.Skin1 == null)
continue;
bool skinSleeping = true;
if ((info.Skin1.Owner != null) && (info.Skin1.Owner.IsActive))
skinSleeping = false;
// only do one per pair
if ((skinSleeping == false) && (info.Skin1.ID < info.Skin0.ID))
continue;
if ((collisionPredicate != null) && (!collisionPredicate.ConsiderSkinPair(info.Skin0, info.Skin1)))
continue;
// basic bbox test
if (BoundingBoxHelper.OverlapTest(ref info.Skin1.WorldBoundingBox,
ref info.Skin0.WorldBoundingBox, collTolerance))
{
if (CheckCollidables(info.Skin0, info.Skin1))
{
int bodyPrimitives = info.Skin0.NumPrimitives;
int primitves = info.Skin1.NumPrimitives;
for (info.IndexPrim0 = 0; info.IndexPrim0 < bodyPrimitives; ++info.IndexPrim0)
{
for (info.IndexPrim1 = 0; info.IndexPrim1 < primitves; ++info.IndexPrim1)
{
DetectFunctor f = GetCollDetectFunctor(info.Skin0.GetPrimitiveNewWorld(info.IndexPrim0).Type,
info.Skin1.GetPrimitiveNewWorld(info.IndexPrim1).Type);
if (f != null)
f.CollDetect(info, collTolerance, collisionFunctor);
}
}
} // check collidables
} // overlapt test
}// loop over entries
} // loop over lists
} // loop over bodies
}