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 static bool CollidesWith(this FBCollider a, FBCollider b, Action <FBCollision> onCollision)
{
var axes = a.CollisionAxes(b);
axes.AddRange(b.CollisionAxes(a));
Vector2 mtv = Vector2.Zero;
float mtvDistance = float.MaxValue;
foreach (var axis in axes)
{
float aMin, aMax, bMin, bMax;
a.Project(axis, out aMin, out aMax);
b.Project(axis, out bMin, out bMax);
var intervalDistance = IntervalDistance(aMin, aMax, bMin, bMax);
if (intervalDistance >= 0)
{
return(false);
}
if ((intervalDistance = Math.Abs(intervalDistance)) < mtvDistance)
{
mtv = axis;
mtvDistance = intervalDistance;
}
}
var collision = new FBCollision()
{
seperatingVector = mtv * mtvDistance,
collidedWith = b
};
onCollision?.Invoke(collision);
return(true);
}