static bool GetSingleSingleCollision(CircleCollisionSystem c1, CircleCollisionSystem c2)
{
return c1.IsCollision(c1.GetCollisionTarget(), c2.GetCollisionTarget());
}
static bool GetSingleMultiCollisionPredict(CircleCollisionSystem single, CircleCollisionSystem multi)
{
if (multi.IsNeedPredict())
{
return single.IsCollision(multi.GetPredictateCollisionTarget(), single.GetCollisionTarget());
}
else
{
return true;
}
}
static bool GetMultiMultiCollisionPredict(CircleCollisionSystem c1, CircleCollisionSystem c2)
{
bool p1 = c1.IsNeedPredict();
bool p2 = c2.IsNeedPredict();
if (!p1 && !p2)
{
return true;
}
if (p1 && p2)
{
return c1.IsCollision(c1.GetPredictateCollisionTarget(), c2.GetPredictateCollisionTarget());
}
if (p1 && !p2)
{
return GetSingleMultiCollision(c1.GetPredictateCollisionTarget(), c2);
}
if (!p1 && p2)
{
return GetSingleMultiCollision(c2.GetPredictateCollisionTarget(), c1);
}
return true;
}
static bool GetSingleMultiCollision(CollisionTarget single, CircleCollisionSystem multi)
{
return multi.Collisions.Any(i => multi.IsCollision(i.GetCollisionTarget(), single));
}
static bool GetMultiMultiCollision(CircleCollisionSystem c1, CircleCollisionSystem c2)
{
if (!GetMultiMultiCollisionPredict(c1, c2))
{
return false;
}
return c1.Collisions
.Select(i => i.GetCollisionTarget())
.Any(i =>
c2.Collisions
.Select(j => j.GetCollisionTarget())
.Any(j => c1.IsCollision(i, j))
);
}