tibia-client/src/framework/graphics/particlesystem.cpp

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/*
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* Copyright (c) 2010-2012 OTClient <https://github.com/edubart/otclient>
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*
* Permission is hereby granted, free of charge, to any person obtaining a copy
* of this software and associated documentation files (the "Software"), to deal
* in the Software without restriction, including without limitation the rights
* to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
* copies of the Software, and to permit persons to whom the Software is
* furnished to do so, subject to the following conditions:
*
* The above copyright notice and this permission notice shall be included in
* all copies or substantial portions of the Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
* AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
* THE SOFTWARE.
*/
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#include "particle.h"
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#include "particlesystem.h"
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#include <framework/core/clock.h>
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ParticleSystem::ParticleSystem()
{
m_finished = false;
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m_lastUpdateTime = g_clock.time();
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}
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bool ParticleSystem::load(const OTMLNodePtr& node)
{
for(const OTMLNodePtr& childNode : node->children()) {
if(childNode->tag() == "Emitter") {
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ParticleEmitterPtr emitter = ParticleEmitterPtr(new ParticleEmitter(shared_from_this()));
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if(!emitter->load(childNode))
return false;
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m_emitters.push_back(emitter);
}
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else if(childNode->tag().find("Affector") != std::string::npos) {
ParticleAffectorPtr affector;
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if(childNode->tag() == "GravityAffector")
affector = ParticleAffectorPtr(new GravityAffector);
else if(childNode->tag() == "AttractionAffector")
affector = ParticleAffectorPtr(new AttractionAffector);
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if(affector) {
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if(!affector->load(childNode))
return false;
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m_affectors.push_back(affector);
}
}
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}
return true;
}
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void ParticleSystem::addParticle(const ParticlePtr& particle)
{
m_particles.push_back(particle);
}
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void ParticleSystem::render()
{
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for(auto it = m_particles.begin(), end = m_particles.end(); it != end; ++it)
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(*it)->render();
}
void ParticleSystem::update()
{
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static const float delay = 0.0166; // 60 updates/s
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// check if finished
if(m_particles.empty() && m_emitters.empty()) {
m_finished = true;
return;
}
// check time
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float elapsedTime = g_clock.timeElapsed(m_lastUpdateTime);
if(elapsedTime < delay)
return;
m_lastUpdateTime = g_clock.time() - std::fmod(elapsedTime, delay);
for(int i = 0; i < elapsedTime / delay; ++i) {
// update emitters
for(auto it = m_emitters.begin(), end = m_emitters.end(); it != end;) {
const ParticleEmitterPtr& emitter = *it;
if(emitter->hasFinished()) {
it = m_emitters.erase(it);
continue;
}
emitter->update(delay);
++it;
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}
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// update affectors
for(auto it = m_affectors.begin(), end = m_affectors.end(); it != end;) {
const ParticleAffectorPtr& affector = *it;
if(affector->hasFinished()) {
it = m_affectors.erase(it);
continue;
}
affector->update(delay);
++it;
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}
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// update particles
for(auto it = m_particles.begin(), end = m_particles.end(); it != end;) {
const ParticlePtr& particle = *it;
if(particle->hasFinished()) {
it = m_particles.erase(it);
continue;
}
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// pass particles through affectors
for(const ParticleAffectorPtr& particleAffector : m_affectors)
particleAffector->updateParticle(particle, delay);
particle->update(delay);
++it;
}
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}
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}