mirror of https://github.com/minetest/minetest.git
145 lines
3.9 KiB
C++
145 lines
3.9 KiB
C++
/*
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Minetest
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Copyright (C) 2010-2018 nerzhul, Loic BLOT <loic.blot@unix-experience.fr>
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This program is free software; you can redistribute it and/or modify
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it under the terms of the GNU Lesser General Public License as published by
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the Free Software Foundation; either version 2.1 of the License, or
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(at your option) any later version.
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This program is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU Lesser General Public License for more details.
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You should have received a copy of the GNU Lesser General Public License along
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with this program; if not, write to the Free Software Foundation, Inc.,
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51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
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*/
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#include <cmath>
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#include <log.h>
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#include "profiler.h"
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#include "activeobjectmgr.h"
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namespace client
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{
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ActiveObjectMgr::~ActiveObjectMgr()
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{
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if (!m_active_objects.empty()) {
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warningstream << "client::ActiveObjectMgr::~ActiveObjectMgr(): not cleared."
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<< std::endl;
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clear();
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}
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}
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void ActiveObjectMgr::step(
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float dtime, const std::function<void(ClientActiveObject *)> &f)
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{
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g_profiler->avg("ActiveObjectMgr: CAO count [#]", m_active_objects.size());
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// Same as in server activeobjectmgr.
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std::vector<u16> ids = getAllIds();
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for (u16 id : ids) {
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auto it = m_active_objects.find(id);
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if (it == m_active_objects.end())
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continue; // obj was removed
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f(it->second.get());
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}
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}
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bool ActiveObjectMgr::registerObject(std::unique_ptr<ClientActiveObject> obj)
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{
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assert(obj); // Pre-condition
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if (obj->getId() == 0) {
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u16 new_id = getFreeId();
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if (new_id == 0) {
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infostream << "Client::ActiveObjectMgr::registerObject(): "
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<< "no free id available" << std::endl;
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return false;
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}
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obj->setId(new_id);
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}
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if (!isFreeId(obj->getId())) {
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infostream << "Client::ActiveObjectMgr::registerObject(): "
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<< "id is not free (" << obj->getId() << ")" << std::endl;
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return false;
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}
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infostream << "Client::ActiveObjectMgr::registerObject(): "
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<< "added (id=" << obj->getId() << ")" << std::endl;
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m_active_objects[obj->getId()] = std::move(obj);
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return true;
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}
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void ActiveObjectMgr::removeObject(u16 id)
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{
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verbosestream << "Client::ActiveObjectMgr::removeObject(): "
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<< "id=" << id << std::endl;
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auto it = m_active_objects.find(id);
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if (it == m_active_objects.end()) {
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infostream << "Client::ActiveObjectMgr::removeObject(): "
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<< "id=" << id << " not found" << std::endl;
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return;
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}
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std::unique_ptr<ClientActiveObject> obj = std::move(it->second);
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m_active_objects.erase(it);
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obj->removeFromScene(true);
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}
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void ActiveObjectMgr::getActiveObjects(const v3f &origin, f32 max_d,
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std::vector<DistanceSortedActiveObject> &dest)
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{
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f32 max_d2 = max_d * max_d;
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for (auto &ao_it : m_active_objects) {
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ClientActiveObject *obj = ao_it.second.get();
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f32 d2 = (obj->getPosition() - origin).getLengthSQ();
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if (d2 > max_d2)
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continue;
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dest.emplace_back(obj, d2);
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}
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}
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std::vector<DistanceSortedActiveObject> ActiveObjectMgr::getActiveSelectableObjects(const core::line3d<f32> &shootline)
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{
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std::vector<DistanceSortedActiveObject> dest;
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f32 max_d = shootline.getLength();
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v3f dir = shootline.getVector().normalize();
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for (auto &ao_it : m_active_objects) {
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ClientActiveObject *obj = ao_it.second.get();
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aabb3f selection_box;
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if (!obj->getSelectionBox(&selection_box))
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continue;
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v3f obj_center = obj->getPosition() + selection_box.getCenter();
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f32 obj_radius_sq = selection_box.getExtent().getLengthSQ() / 4;
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v3f c = obj_center - shootline.start;
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f32 a = dir.dotProduct(c); // project c onto dir
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f32 b_sq = c.getLengthSQ() - a * a; // distance from shootline to obj_center, squared
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if (b_sq > obj_radius_sq)
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continue;
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// backward- and far-plane
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f32 obj_radius = std::sqrt(obj_radius_sq);
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if (a < -obj_radius || a > max_d + obj_radius)
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continue;
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dest.emplace_back(obj, a);
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}
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return dest;
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}
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} // namespace client
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