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114 lines
4.7 KiB
114 lines
4.7 KiB
/*
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* Copyright (c) 2010-2013 OTClient <https://github.com/edubart/otclient>
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*
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* Permission is hereby granted, free of charge, to any person obtaining a copy
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* of this software and associated documentation files (the "Software"), to deal
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* in the Software without restriction, including without limitation the rights
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* to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
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* copies of the Software, and to permit persons to whom the Software is
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* furnished to do so, subject to the following conditions:
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*
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* The above copyright notice and this permission notice shall be included in
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* all copies or substantial portions of the Software.
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*
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* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
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* AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
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* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
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* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
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* THE SOFTWARE.
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*/
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#include "particle.h"
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#include "particleemitter.h"
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#include "particlesystem.h"
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#include <framework/core/clock.h>
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#include <framework/graphics/texturemanager.h>
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#include "particlemanager.h"
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ParticleEmitter::ParticleEmitter()
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{
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m_position = Point(0, 0);
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m_duration = -1;
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m_delay = 0;
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m_burstRate = 1;
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m_burstCount = 32;
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m_currentBurst = 0;
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m_elapsedTime = 0;
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m_finished = false;
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m_active = false;
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}
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void ParticleEmitter::load(const OTMLNodePtr& node)
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{
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for(const OTMLNodePtr& childNode : node->children()) {
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// self related
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if(childNode->tag() == "position")
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m_position = childNode->value<Point>();
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else if(childNode->tag() == "duration")
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m_duration = childNode->value<float>();
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else if(childNode->tag() == "delay")
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m_delay = childNode->value<float>();
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else if(childNode->tag() == "burst-rate")
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m_burstRate = childNode->value<float>();
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else if(childNode->tag() == "burst-count")
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m_burstCount = childNode->value<int>();
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else if(childNode->tag() == "particle-type")
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m_particleType = g_particles.getParticleType(childNode->value());
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}
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if(!m_particleType)
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stdext::throw_exception("emitter didn't provide a valid particle type");
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}
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void ParticleEmitter::update(float elapsedTime, const ParticleSystemPtr& system)
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{
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m_elapsedTime += elapsedTime;
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// check if finished
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if(m_duration > 0 && m_elapsedTime >= m_duration + m_delay) {
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m_finished = true;
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return;
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}
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if(!m_active && m_elapsedTime > m_delay)
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m_active = true;
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if(!m_active)
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return;
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int nextBurst = std::floor((m_elapsedTime - m_delay) * m_burstRate) + 1;
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const ParticleType *type = m_particleType.get();
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for(int b = m_currentBurst; b < nextBurst; ++b) {
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// every burst created at same position.
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float pRadius = stdext::random_range(type->pMinPositionRadius, type->pMaxPositionRadius);
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float pAngle = stdext::random_range(type->pMinPositionAngle, type->pMaxPositionAngle);
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Point pPosition = m_position + Point(pRadius * std::cos(pAngle), pRadius * std::sin(pAngle));
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for(int p = 0; p < m_burstCount; ++p) {
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float pDuration = stdext::random_range(type->pMinDuration, type->pMaxDuration);
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// particles initial velocity
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float pVelocityAbs = stdext::random_range(type->pMinVelocity, type->pMaxVelocity);
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float pVelocityAngle = stdext::random_range(type->pMinVelocityAngle, type->pMaxVelocityAngle);
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PointF pVelocity(pVelocityAbs * std::cos(pVelocityAngle), pVelocityAbs * std::sin(pVelocityAngle));
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// particles initial acceleration
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float pAccelerationAbs = stdext::random_range(type->pMinAcceleration, type->pMaxAcceleration);
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float pAccelerationAngle = stdext::random_range(type->pMinAccelerationAngle, type->pMaxAccelerationAngle);
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PointF pAcceleration(pAccelerationAbs * std::cos(pAccelerationAngle), pAccelerationAbs * std::sin(pAccelerationAngle));
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ParticlePtr particle(new Particle(pPosition, type->pStartSize, type->pFinalSize,
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pVelocity, pAcceleration,
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pDuration, type->pIgnorePhysicsAfter,
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type->pColors, type->pColorsStops,
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type->pCompositionMode, type->pTexture));
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system->addParticle(particle);
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}
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}
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m_currentBurst = nextBurst;
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}
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