// Modifies completedCollisions by always trying to add the new collision pair to the list
private bool ShouldSkipCollisionCheck(JCollider colliderA, JCollider colliderB, HashSet <JCollisionPair> completedCollisions)
{
if (!JLayerMaskUtil.MaskCheck(JLayerMaskUtil.GetLayerMask(colliderA.jLayer), colliderB.jLayer))
{
return(true);
}
var collisionPair = new JCollisionPair(colliderA, colliderB);
if (!completedCollisions.Add(collisionPair)) // This is where the methods mutates completedCollisions
{
return(true);
}
var boundsA = colliderA.meshFrame.AABB;
var boundsB = colliderB.meshFrame.AABB;
if (!JMeshOverlap.AABBOverlap(boundsA, boundsB))
{
return(true);
}
var meshA = colliderA.meshFrame;
var meshB = colliderB.meshFrame;
if (!JMeshOverlap.MeshesOverlap(meshA, meshB))
{
return(true);
}
return(false);
}
public List <JCollider> FindOverlaps(JCollider colliderA)
{
var output = new List <JCollider>(10);
var boundsA = colliderA.meshFrame.AABB;
var meshA = colliderA.meshFrame;
collisionMapQueue.ResetQueueIteration();
while (collisionMapQueue.HasNext())
{
var map = collisionMapQueue.Next();
if (map.bodies != null && JMeshOverlap.AABBOverlap(boundsA, map.bounds))
{
for (var i = 0; i < map.bodies.Count; i++)
{
var colliderB = map.bodies[i];
if (output.Contains(colliderB))
{
continue;
}
if (JLayerMaskUtil.MaskCheck(JLayerMaskUtil.GetLayerMask(colliderA.jLayer), colliderB.jLayer) &&
JMeshOverlap.AABBOverlap(boundsA, colliderB.meshFrame.AABB) &&
JMeshOverlap.MeshesOverlap(meshA, colliderB.meshFrame))
{
output.Add(colliderB);
}
}
}
}
return(output);
}
public static CollisionMap GenerateMapFor(List <JCollider> bodies, int maxNumberOfElements, Bounds bounds)
{
var rootCollisionMap = new CollisionMap();
if (bodies.Count <= maxNumberOfElements || bounds.size.x <= MinBoundsWidth)
{
rootCollisionMap.bodies = new List <JCollider>(bodies);
rootCollisionMap.bounds = bounds;
}
else
{
var newXSize = bounds.size.x / 2;
var boundsChildA = new Bounds(
new Vector3(newXSize / 2 + bounds.min.x, 0, bounds.center.z),
new Vector3(newXSize, 0, bounds.size.z));
var boundsChildB = new Bounds(
new Vector3(newXSize / 2 + bounds.center.x, 0, bounds.center.z),
new Vector3(newXSize, 0, bounds.size.z));
List <JCollider> childABodies = new List <JCollider>();
List <JCollider> childBBodies = new List <JCollider>();
for (var i = 0; i < bodies.Count; i++)
{
var body = bodies[i];
if (JMeshOverlap.AABBOverlap(boundsChildA, body.meshFrame.AABB))
{
childABodies.Add(body);
}
if (JMeshOverlap.AABBOverlap(boundsChildB, body.meshFrame.AABB))
{
childBBodies.Add(body);
}
}
rootCollisionMap.subMaps = new List <CollisionMap>();
rootCollisionMap.subMaps.Add(GenerateMapFor(childABodies, maxNumberOfElements, boundsChildA));
rootCollisionMap.subMaps.Add(GenerateMapFor(childBBodies, maxNumberOfElements, boundsChildB));
}
return(rootCollisionMap);
}
