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/*
Minetest
Copyright (C) 2010-2018 nerzhul, Loic BLOT <loic.blot@unix-experience.fr>
This program is free software; you can redistribute it and/or modify
it under the terms of the GNU Lesser General Public License as published by
the Free Software Foundation; either version 2.1 of the License, or
(at your option) any later version.
This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU Lesser General Public License for more details.
You should have received a copy of the GNU Lesser General Public License along
with this program; if not, write to the Free Software Foundation, Inc.,
51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
*/
#include <cmath>
#include <log.h>
#include "profiler.h"
#include "activeobjectmgr.h"
namespace client
{
void ActiveObjectMgr::clear()
{
// delete active objects
for (auto &active_object : m_active_objects) {
delete active_object.second;
// Object must be marked as gone when children try to detach
active_object.second = nullptr;
}
m_active_objects.clear();
}
void ActiveObjectMgr::step(
float dtime, const std::function<void(ClientActiveObject *)> &f)
{
g_profiler->avg("ActiveObjectMgr: CAO count [#]", m_active_objects.size());
for (auto &ao_it : m_active_objects) {
f(ao_it.second);
}
}
// clang-format off
bool ActiveObjectMgr::registerObject(ClientActiveObject *obj)
{
assert(obj); // Pre-condition
if (obj->getId() == 0) {
u16 new_id = getFreeId();
if (new_id == 0) {
infostream << "Client::ActiveObjectMgr::registerObject(): "
<< "no free id available" << std::endl;
delete obj;
return false;
}
obj->setId(new_id);
}
if (!isFreeId(obj->getId())) {
infostream << "Client::ActiveObjectMgr::registerObject(): "
<< "id is not free (" << obj->getId() << ")" << std::endl;
delete obj;
return false;
}
infostream << "Client::ActiveObjectMgr::registerObject(): "
<< "added (id=" << obj->getId() << ")" << std::endl;
m_active_objects[obj->getId()] = obj;
return true;
}
void ActiveObjectMgr::removeObject(u16 id)
{
verbosestream << "Client::ActiveObjectMgr::removeObject(): "
<< "id=" << id << std::endl;
ClientActiveObject *obj = getActiveObject(id);
if (!obj) {
infostream << "Client::ActiveObjectMgr::removeObject(): "
<< "id=" << id << " not found" << std::endl;
return;
}
m_active_objects.erase(id);
obj->removeFromScene(true);
delete obj;
}
// clang-format on
void ActiveObjectMgr::getActiveObjects(const v3f &origin, f32 max_d,
std::vector<DistanceSortedActiveObject> &dest)
{
f32 max_d2 = max_d * max_d;
for (auto &ao_it : m_active_objects) {
ClientActiveObject *obj = ao_it.second;
f32 d2 = (obj->getPosition() - origin).getLengthSQ();
if (d2 > max_d2)
continue;
dest.emplace_back(obj, d2);
}
}
void ActiveObjectMgr::getActiveSelectableObjects(const core::line3d<f32> &shootline,
std::vector<DistanceSortedActiveObject> &dest)
{
// Imagine a not-axis-aligned cuboid oriented into the direction of the shootline,
// with the width of the object's selection box radius * 2 and with length of the
// shootline (+selection box radius forwards and backwards). We check whether
// the selection box center is inside this cuboid.
f32 max_d = shootline.getLength();
v3f dir = shootline.getVector().normalize();
v3f dir_ortho1 = dir.crossProduct(dir + v3f(1,0,0)).normalize();
v3f dir_ortho2 = dir.crossProduct(dir_ortho1);
for (auto &ao_it : m_active_objects) {
ClientActiveObject *obj = ao_it.second;
aabb3f selection_box;
if (!obj->getSelectionBox(&selection_box))
continue;
// possible optimization: get rid of the sqrt here
f32 selection_box_radius = selection_box.getRadius();
v3f pos_diff = obj->getPosition() + selection_box.getCenter() - shootline.start;
f32 d = dir.dotProduct(pos_diff);
// backward- and far-plane
if (d + selection_box_radius < 0.0f || d - selection_box_radius > max_d)
continue;
// side-planes
if (std::fabs(dir_ortho1.dotProduct(pos_diff)) > selection_box_radius
|| std::fabs(dir_ortho2.dotProduct(pos_diff)) > selection_box_radius)
continue;
dest.emplace_back(obj, d);
}
}
} // namespace client
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