From a353543dd4da3c489a84f6f17125fdd0e1be2349 Mon Sep 17 00:00:00 2001 From: Bjørn Lindeijer Date: Mon, 4 Jun 2007 21:48:47 +0000 Subject: Merged 0.0 changes from revision 3234 to 3317 to trunk. --- src/particleemitter.cpp | 327 ++++++++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 327 insertions(+) create mode 100644 src/particleemitter.cpp (limited to 'src/particleemitter.cpp') diff --git a/src/particleemitter.cpp b/src/particleemitter.cpp new file mode 100644 index 00000000..2387c652 --- /dev/null +++ b/src/particleemitter.cpp @@ -0,0 +1,327 @@ +/* + * The Mana World + * Copyright 2006 The Mana World Development Team + * + * This file is part of The Mana World. + * + * The Mana World is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License as published by + * the Free Software Foundation; either version 2 of the License, or + * any later version. + * + * The Mana World 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 General Public License for more details. + * + * You should have received a copy of the GNU General Public License + * along with The Mana World; if not, write to the Free Software + * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA + * + * $Id$ + */ + +#include "particleemitter.h" + +#include "animationparticle.h" +#include "imageparticle.h" +#include "log.h" +#include "particle.h" + +#include "resources/animation.h" +#include "resources/image.h" +#include "resources/resourcemanager.h" +#include "resources/imageset.h" + +#include + +#define SIN45 0.707106781f +#define DEG_RAD_FACTOR 0.017453293f + +ParticleEmitter::ParticleEmitter(xmlNodePtr emitterNode, Particle *target, Map *map): + mParticleImage(0) +{ + mMap = map; + mParticleTarget = target; + + //initializing default values + mParticlePosX.set(0.0f); + mParticlePosY.set(0.0f); + mParticlePosZ.set(0.0f); + mParticleAngleHorizontal.set(0.0f); + mParticleAngleVertical.set(0.0f); + mParticlePower.set(0.0f); + mParticleGravity.set(0.0f); + mParticleRandomnes.set(0); + mParticleBounce.set(0.0f); + mParticleAcceleration.set(0.0f); + mParticleDieDistance.set(-1.0f); + mParticleMomentum.set(1.0f); + mParticleLifetime.set(-1); + mParticleFadeOut.set(0); + mParticleFadeIn.set(0); + mOutput.set(1); + + for_each_xml_child_node(propertyNode, emitterNode) + { + if (xmlStrEqual(propertyNode->name, BAD_CAST "property")) + { + std::string name = XML::getProperty(propertyNode, "name", ""); + + if (name == "position-x") + { + mParticlePosX = readMinMax(propertyNode, 0.0f); + } + else if (name == "position-y") + { + + mParticlePosY = readMinMax(propertyNode, 0.0f); + } + else if (name == "position-z") + { + mParticlePosZ = readMinMax(propertyNode, 0.0f); + } + else if (name == "image") + { + std::string image = XML::getProperty(propertyNode, "value", ""); + // Don't leak when multiple images are defined + if (image != "" && !mParticleImage) + { + ResourceManager *resman = ResourceManager::getInstance(); + mParticleImage = resman->getImage(image); + } + } + else if (name == "horizontal-angle") + { + mParticleAngleHorizontal = readMinMax(propertyNode, 0.0f); + mParticleAngleHorizontal.minVal *= DEG_RAD_FACTOR; + mParticleAngleHorizontal.maxVal *= DEG_RAD_FACTOR; + } + else if (name == "vertical-angle") + { + mParticleAngleVertical = readMinMax(propertyNode, 0.0f); + mParticleAngleVertical.minVal *= DEG_RAD_FACTOR; + mParticleAngleVertical.maxVal *= DEG_RAD_FACTOR; + } + else if (name == "power") + { + mParticlePower = readMinMax(propertyNode, 0.0f); + } + else if (name == "gravity") + { + mParticleGravity = readMinMax(propertyNode, 0.0f); + } + else if (name == "randomnes") + { + mParticleRandomnes = readMinMax(propertyNode, 0); + } + else if (name == "bounce") + { + mParticleBounce = readMinMax(propertyNode, 0.0f); + } + else if (name == "lifetime") + { + mParticleLifetime = readMinMax(propertyNode, 0); + mParticleLifetime.minVal += 1; + } + else if (name == "output") + { + mOutput = readMinMax(propertyNode, 0); + mOutput.maxVal +=1; + } + else if (name == "acceleration") + { + mParticleAcceleration = readMinMax(propertyNode, 0.0f); + } + else if (name == "die-distance") + { + mParticleDieDistance = readMinMax(propertyNode, 0.0f); + } + else if (name == "momentum") + { + mParticleMomentum = readMinMax(propertyNode, 1.0f); + } + else if (name == "fade-out") + { + mParticleFadeOut = readMinMax(propertyNode, 0); + } + else if (name == "fade-in") + { + mParticleFadeIn = readMinMax(propertyNode, 0); + } + else + { + logger->log("Particle Engine: Warning, unknown emitter property \"%s\"", + name.c_str() + ); + } + } + else if (xmlStrEqual(propertyNode->name, BAD_CAST "emitter")) + { + ParticleEmitter newEmitter(propertyNode, mParticleTarget, map); + mParticleChildEmitters.push_back(newEmitter); + } + else if (xmlStrEqual(propertyNode->name, BAD_CAST "animation")) + { + ImageSet *imageset = ResourceManager::getInstance()->getImageSet( + XML::getProperty(propertyNode, "imageset", ""), + XML::getProperty(propertyNode, "width", 0), + XML::getProperty(propertyNode, "height", 0) + ); + + // Get animation frames + for_each_xml_child_node(frameNode, propertyNode) + { + int delay = XML::getProperty(frameNode, "delay", 0); + int offsetX = XML::getProperty(frameNode, "offsetX", 0); + int offsetY = XML::getProperty(frameNode, "offsetY", 0); + offsetY -= imageset->getHeight() - 32; + offsetX -= imageset->getWidth() / 2 - 16; + + if (xmlStrEqual(frameNode->name, BAD_CAST "frame")) + { + int index = XML::getProperty(frameNode, "index", -1); + + if (index < 0) + { + logger->log("No valid value for 'index'"); + continue; + } + + Image *img = imageset->get(index); + + if (!img) + { + logger->log("No image at index " + (index)); + continue; + } + + mParticleAnimation.addFrame(img, delay, offsetX, offsetY); + } + else if (xmlStrEqual(frameNode->name, BAD_CAST "sequence")) + { + int start = XML::getProperty(frameNode, "start", -1); + int end = XML::getProperty(frameNode, "end", -1); + + if (start < 0 || end < 0) + { + logger->log("No valid value for 'start' or 'end'"); + continue; + } + + while (end >= start) + { + Image *img = imageset->get(start); + + if (!img) + { + logger->log("No image at index " + + (start)); + continue; + } + + mParticleAnimation.addFrame(img, delay, offsetX, offsetY); + start++; + } + } + else if (xmlStrEqual(frameNode->name, BAD_CAST "end")) + { + mParticleAnimation.addTerminator(); + } + } // for frameNode + } + } +} + + +ParticleEmitter::~ParticleEmitter() +{ + if (mParticleImage) + { + mParticleImage->decRef(); + } +} + + +template MinMax +ParticleEmitter::readMinMax(xmlNodePtr propertyNode, T def) +{ + MinMax retval; + + def = (T)XML::getFloatProperty(propertyNode, "value", (double)def); + retval.set ( (T)XML::getFloatProperty(propertyNode, "min", (double)def), + (T)XML::getFloatProperty(propertyNode, "max", (double)def) + ); + + return retval; +} + + +std::list +ParticleEmitter::createParticles() +{ + std::list newParticles; + + for (int i = mOutput.value(); i > 0; i--) + { + // Limit maximum particles + if (Particle::particleCount > Particle::maxCount) break; + + Particle *newParticle; + if (mParticleImage) + { + newParticle = new ImageParticle(mMap, mParticleImage); + } + else if (mParticleAnimation.getLength() > 0) + { + Animation *newAnimation = new Animation(mParticleAnimation); + newParticle = new AnimationParticle(mMap, newAnimation); + } + else + { + newParticle = new Particle(mMap); + } + + + newParticle->setPosition( + mParticlePosX.value(), + mParticlePosY.value(), + mParticlePosZ.value() + ); + + float angleH = mParticleAngleHorizontal.value(); + float angleV = mParticleAngleVertical.value(); + float power = mParticlePower.value(); + newParticle->setVector( + cos(angleH) * cos(angleV) * power, + sin(angleH) * cos(angleV) * SIN45 * power, + sin(angleV) * SIN45 * power + ); + + newParticle->setRandomnes(mParticleRandomnes.value()); + newParticle->setGravity(mParticleGravity.value()); + newParticle->setBounce(mParticleBounce.value()); + + newParticle->setDestination(mParticleTarget, + mParticleAcceleration.value(), + mParticleMomentum.value() + ); + newParticle->setDieDistance(mParticleDieDistance.value()); + + newParticle->setLifetime(mParticleLifetime.value()); + newParticle->setFadeOut(mParticleFadeOut.value()); + newParticle->setFadeIn(mParticleFadeIn.value()); + + for ( std::list::iterator i = mParticleChildEmitters.begin(); + i != mParticleChildEmitters.end(); + i++ + ) + { + newParticle->addEmitter(new ParticleEmitter(*i)); + } + + newParticles.push_back(newParticle); + } + + return newParticles; +} -- cgit v1.2.3-70-g09d2