public List <FBCollision <T> > GetAllCollisions(List <T> bodies, FBSpatialHash <T> bodiesHashed)
{
var allPossibleCollisions = GetAllPossibleCollisions(bodies, bodiesHashed);
var firstCollisions = FilterEarliestCollisions(allPossibleCollisions);
return(firstCollisions);
}
protected List <T> GetPotentialCollidingBodies(T body, FBSpatialHash <T> bodiesHashed)
{
List <T> potentialBodies = new List <T>();
var sweptAABB = GetSweptAABB(body);
var potentialCollisionBodies = bodiesHashed.GetRectangle(sweptAABB);
foreach (var potentialBody in potentialCollisionBodies)
{
if (potentialBody != body)
{
potentialBodies.Add(potentialBody);
}
}
return(potentialBodies);
}
protected List <FBCollision <T> > GetAllPossibleCollisions(List <T> bodies, FBSpatialHash <T> bodiesHashed)
{
List <FBCollision <T> > collisions = new List <FBCollision <T> >();
var allPotentialCollisionPairs = GetPotentialCollisionPairs(bodies, bodiesHashed);
foreach (var pair in allPotentialCollisionPairs)
{
if (pair.BodyA.Collider.WillCollideWith(pair.BodyA.MovementThisFrame, pair.BodyB.Collider, pair.BodyB.MovementThisFrame, out var bodyAMovementInfo, out var bodyBMovementInfo, true))
{
var collision = new FBCollision <T>();
collision.BodyA = pair.BodyA;
collision.BodyB = pair.BodyB;
collision.AMovement = bodyAMovementInfo;
collision.BMovement = bodyBMovementInfo;
collisions.Add(collision);
}
}
return(collisions);
}
public void Initialize()
{
bodies = new List <T>();
bodiesHash = new FBSpatialHash <T>(100);
}
public FBScene()
{
bodies = new List <T>();
bodiesHash = new FBSpatialHash <T>(100);
collisionChecker = new FBCollisionChecker <T>();
}
protected List <FBPotentialCollisionPair <T> > GetPotentialCollisionPairs(List <T> bodies, FBSpatialHash <T> bodiesHashed)
{
var pairs = new List <FBPotentialCollisionPair <T> >();
foreach (var body in bodies)
{
var potentialCollidingBodies = GetPotentialCollidingBodies(body, bodiesHashed);
foreach (var potentialCollidingBody in potentialCollidingBodies)
{
pairs.Add(new FBPotentialCollisionPair <T>()
{
BodyA = body,
BodyB = potentialCollidingBody
});
}
}
return(pairs);
}
