bool CollisionManager::checkLineOfSightWorldToCell(const Vector3& rayOrigin, const Vector3& rayEnd, float distance, CellObject* cellObject) {
ManagedReference<SceneObject*> building = cellObject->getParent();
if (building == NULL)
return true;
SharedObjectTemplate* objectTemplate = building->getObjectTemplate();
PortalLayout* portalLayout = objectTemplate->getPortalLayout();
if (portalLayout == NULL)
return true;
Ray ray = convertToModelSpace(rayOrigin, rayEnd, building);
if (cellObject->getCellNumber() >= portalLayout->getAppearanceTemplatesSize())
return true;
MeshAppearanceTemplate* app = portalLayout->getMeshAppearanceTemplate(cellObject->getCellNumber());
AABBTree* aabbTree = app->getAABBTree();
if (aabbTree == NULL)
return true;
float intersectionDistance;
Triangle* triangle = NULL;
if (aabbTree->intersects(ray, distance, intersectionDistance, triangle, true))
return false;
return true;
}
bool CollisionManager::checkLineOfSightInBuilding(SceneObject* object1, SceneObject* object2, SceneObject* building) {
SharedObjectTemplate* objectTemplate = building->getObjectTemplate();
PortalLayout* portalLayout = objectTemplate->getPortalLayout();
if (portalLayout == NULL)
return true;
//we are in model space... in cells
Vector3 rayOrigin = object1->getPosition();
rayOrigin.set(rayOrigin.getX(), rayOrigin.getY(), rayOrigin.getZ() + 1.f);
Vector3 rayEnd = object2->getPosition();
rayEnd.set(rayEnd.getX(), rayEnd.getY(), rayEnd.getZ() + 1.f);
Vector3 direction(Vector3(rayEnd - rayOrigin));
direction.normalize();
float distance = rayEnd.distanceTo(rayOrigin);
float intersectionDistance;
Ray ray(rayOrigin, direction);
Triangle* triangle = NULL;
// we check interior cells
for (int i = 1; i < portalLayout->getAppearanceTemplatesSize(); ++i) {
MeshAppearanceTemplate* app = portalLayout->getMeshAppearanceTemplate(i);
AABBTree* aabbTree = app->getAABBTree();
if (aabbTree == NULL)
continue;
if (aabbTree->intersects(ray, distance, intersectionDistance, triangle, true))
return false;
}
return true;
}
