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* Copyright (C) 2006-2009 The Mana World Development Team
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* Copyright (C) 2009-2010 The Mana Developers
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* Copyright (C) 2011-2013 The ManaPlus Developers
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* This file is part of The ManaPlus Client.
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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 General Public License as published by
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* the Free Software Foundation; either version 2 of the License, or
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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 General Public License for more details.
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* You should have received a copy of the GNU General Public License
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* along with this program. If not, see <http://www.gnu.org/licenses/>.
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#include "animationparticle.h"
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#include "configuration.h"
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#include "resources/dye.h"
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#include "particleemitter.h"
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#include "rotationalparticle.h"
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#include "textparticle.h"
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#include "resources/resourcemanager.h"
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#include "gui/sdlfont.h"
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#include "utils/dtor.h"
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#include "utils/mathutils.h"
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#include <guichan/color.hpp>
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static const float SIN45 = 0.707106781f;
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int Particle::particleCount = 0;
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int Particle::maxCount = 0;
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int Particle::fastPhysics = 0;
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int Particle::emitterSkip = 1;
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bool Particle::enabled = true;
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const float Particle::PARTICLE_SKY = 800.0f;
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Particle::Particle(Map *const map) :
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mInvDieDistance(-1.0f),
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mDeathEffectConditions(0x00),
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mAllowSizeAdjust(false),
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Particle::particleCount++;
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// Delete child emitters and child particles
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Particle::particleCount--;
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void Particle::setupEngine()
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Particle::maxCount = config.getIntValue("particleMaxCount");
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Particle::fastPhysics = config.getIntValue("particleFastPhysics");
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Particle::emitterSkip = config.getIntValue("particleEmitterSkip") + 1;
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if (!Particle::emitterSkip)
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Particle::emitterSkip = 1;
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Particle::enabled = config.getBoolValue("particleeffects");
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logger->log1("Particle engine set up");
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bool Particle::draw(Graphics *const, const int, const int) const
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bool Particle::update()
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if (mLifetimeLeft == 0 && mAlive == ALIVE)
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mAlive = DEAD_TIMEOUT;
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const Vector oldPos = mPos;
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// calculate particle movement
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if (mMomentum != 1.0f)
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mVelocity *= mMomentum;
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if (mTarget && mAcceleration != 0.0f)
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Vector dist = mPos - mTarget->mPos;
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switch (Particle::fastPhysics)
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invHypotenuse = fastInvSqrt(
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dist.x * dist.x + dist.y * dist.y + dist.z * dist.z);
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invHypotenuse = 2.0f / (static_cast<float>(fabs(dist.x))
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+ static_cast<float>(fabs(dist.y))
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+ static_cast<float>(fabs(dist.z)));
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invHypotenuse = 1.0f / static_cast<float>(sqrt(
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dist.x * dist.x + dist.y * dist.y + dist.z * dist.z));
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if (mInvDieDistance > 0.0f && invHypotenuse > mInvDieDistance)
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mAlive = DEAD_IMPACT;
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const float accFactor = invHypotenuse * mAcceleration;
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mVelocity -= dist * accFactor;
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mVelocity.x += static_cast<float>((rand() % mRandomness - rand()
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% mRandomness)) / 1000.0f;
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mVelocity.y += static_cast<float>((rand() % mRandomness - rand()
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% mRandomness)) / 1000.0f;
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mVelocity.z += static_cast<float>((rand() % mRandomness - rand()
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% mRandomness)) / 1000.0f;
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mVelocity.z -= mGravity;
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mPos.x += mVelocity.x;
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mPos.y += mVelocity.y * SIN45;
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mPos.z += mVelocity.z * SIN45;
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// Update other stuff
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if (mLifetimeLeft > 0)
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mVelocity *= mBounce;
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mVelocity.z = -mVelocity.z;
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else if (mPos.z > PARTICLE_SKY)
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// Update child emitters
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if (Particle::emitterSkip && (mLifetimePast - 1)
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% Particle::emitterSkip == 0)
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FOR_EACH (EmitterConstIterator, e, mChildEmitters)
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Particles newParticles = (*e)->createParticles(mLifetimePast);
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FOR_EACH (ParticleConstIterator, it, newParticles)
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Particle *const p = *it;
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mChildParticles.push_back(p);
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// create death effect when the particle died
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if (mAlive != ALIVE && mAlive != DEAD_LONG_AGO)
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if ((mAlive & mDeathEffectConditions) > 0x00 && !mDeathEffect.empty())
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Particle *const deathEffect = particleEngine->addEffect(
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deathEffect->moveBy(mPos);
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mAlive = DEAD_LONG_AGO;
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const Vector change = mPos - oldPos;
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// Update child particles
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for (ParticleIterator p = mChildParticles.begin(),
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p2 = mChildParticles.end(); p != p2; )
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Particle *const particle = *p;
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// move particle with its parent if desired
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if (particle->mFollow)
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particle->moveBy(change);
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if (particle->update())
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p = mChildParticles.erase(p);
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if (mAlive != ALIVE && mChildParticles.empty() && mAutoDelete)
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void Particle::moveBy(const Vector &change)
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FOR_EACH (ParticleConstIterator, p, mChildParticles)
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Particle *const particle = *p;
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if (particle->mFollow)
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particle->moveBy(change);
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void Particle::moveTo(const float x, const float y)
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moveTo(Vector(x, y, mPos.z));
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Particle *Particle::createChild()
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Particle *const newParticle = new Particle(mMap);
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mChildParticles.push_back(newParticle);
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Particle *Particle::addEffect(const std::string &particleEffectFile,
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const int pixelX, const int pixelY,
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Particle *newParticle = nullptr;
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const size_t pos = particleEffectFile.find('|');
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const std::string dyePalettes = (pos != std::string::npos)
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? particleEffectFile.substr(pos + 1) : "";
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XML::Document doc(particleEffectFile.substr(0, pos));
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const XmlNodePtr rootNode = doc.rootNode();
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if (!rootNode || !xmlNameEqual(rootNode, "effect"))
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logger->log("Error loading particle: %s", particleEffectFile.c_str());
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ResourceManager *const resman = ResourceManager::getInstance();
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for_each_xml_child_node(effectChildNode, rootNode)
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// We're only interested in particles
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if (!xmlNameEqual(effectChildNode, "particle"))
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// Determine the exact particle type
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if ((node = XML::findFirstChildByName(effectChildNode, "animation")))
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newParticle = new AnimationParticle(mMap, node, dyePalettes);
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else if ((node = XML::findFirstChildByName(
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effectChildNode, "rotation")))
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newParticle = new RotationalParticle(mMap, node, dyePalettes);
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else if ((node = XML::findFirstChildByName(effectChildNode, "image")))
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std::string imageSrc = reinterpret_cast<const char*>(
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node->xmlChildrenNode->content);
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if (!imageSrc.empty() && !dyePalettes.empty())
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Dye::instantiate(imageSrc, dyePalettes);
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Image *const img = resman->getImage(imageSrc);
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newParticle = new ImageParticle(mMap, img);
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newParticle = new Particle(mMap);
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// Read and set the basic properties of the particle
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const float offsetX = static_cast<float>(XML::getFloatProperty(
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effectChildNode, "position-x", 0));
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const float offsetY = static_cast<float>(XML::getFloatProperty(
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effectChildNode, "position-y", 0));
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const float offsetZ = static_cast<float>(XML::getFloatProperty(
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effectChildNode, "position-z", 0));
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const Vector position(mPos.x + static_cast<float>(pixelX) + offsetX,
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mPos.y + static_cast<float>(pixelY) + offsetY,
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newParticle->moveTo(position);
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const int lifetime = XML::getProperty(effectChildNode, "lifetime", -1);
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newParticle->setLifetime(lifetime);
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const bool resizeable = "false" != XML::getProperty(effectChildNode,
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"size-adjustable", "false");
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newParticle->setAllowSizeAdjust(resizeable);
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// Look for additional emitters for this particle
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for_each_xml_child_node(emitterNode, effectChildNode)
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if (xmlNameEqual(emitterNode, "emitter"))
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ParticleEmitter *const newEmitter = new ParticleEmitter(
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emitterNode, newParticle, mMap, rotation, dyePalettes);
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newParticle->addEmitter(newEmitter);
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else if (xmlNameEqual(emitterNode, "deatheffect"))
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const std::string deathEffect = reinterpret_cast<const char*>(
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emitterNode->xmlChildrenNode->content);
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char deathEffectConditions = 0x00;
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if (XML::getBoolProperty(emitterNode, "on-floor", true))
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deathEffectConditions += static_cast<signed char>(
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Particle::DEAD_FLOOR);
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if (XML::getBoolProperty(emitterNode, "on-sky", true))
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deathEffectConditions += static_cast<signed char>(
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if (XML::getBoolProperty(emitterNode, "on-other", false))
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deathEffectConditions += static_cast<signed char>(
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Particle::DEAD_OTHER);
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if (XML::getBoolProperty(emitterNode, "on-impact", true))
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deathEffectConditions += static_cast<signed char>(
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Particle::DEAD_IMPACT);
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if (XML::getBoolProperty(emitterNode, "on-timeout", true))
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deathEffectConditions += static_cast<signed char>(
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Particle::DEAD_TIMEOUT);
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newParticle->setDeathEffect(
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deathEffect, deathEffectConditions);
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mChildParticles.push_back(newParticle);
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Particle *Particle::addTextSplashEffect(const std::string &text,
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const int x, const int y,
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const gcn::Color *const color,
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gcn::Font *const font,
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Particle *const newParticle = new TextParticle(
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mMap, text, color, font, outline);
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newParticle->moveTo(static_cast<float>(x), static_cast<float>(y));
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newParticle->setVelocity(
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static_cast<float>((rand() % 100) - 50) / 200.0f, // X
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static_cast<float>((rand() % 100) - 50) / 200.0f, // Y
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(static_cast<float>((rand() % 100)) / 200.0f) + 4.0f); // Z
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newParticle->setGravity(0.1f);
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newParticle->setBounce(0.5f);
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newParticle->setLifetime(200);
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newParticle->setFadeOut(100);
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mChildParticles.push_back(newParticle);
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Particle *Particle::addTextRiseFadeOutEffect(const std::string &text,
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const int x, const int y,
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const gcn::Color *const color,
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gcn::Font *const font,
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Particle *const newParticle = new TextParticle(
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mMap, text, color, font, outline);
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newParticle->moveTo(static_cast<float>(x), static_cast<float>(y));
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newParticle->setVelocity(0.0f, 0.0f, 0.5f);
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newParticle->setGravity(0.0015f);
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newParticle->setLifetime(300);
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newParticle->setFadeOut(100);
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newParticle->setFadeIn(0);
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mChildParticles.push_back(newParticle);
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void Particle::adjustEmitterSize(const int w, const int h)
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if (mAllowSizeAdjust)
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FOR_EACH (EmitterConstIterator, e, mChildEmitters)
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(*e)->adjustSize(w, h);
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void Particle::clear()
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delete_all(mChildEmitters);
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mChildEmitters.clear();
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delete_all(mChildParticles);
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mChildParticles.clear();
added
removed
src/particle.cpp
