[4597] | 1 | /* |
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[1853] | 2 | orxonox - the future of 3D-vertical-scrollers |
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| 3 | |
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| 4 | Copyright (C) 2004 orx |
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| 5 | |
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| 6 | This program is free software; you can redistribute it and/or modify |
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| 7 | it under the terms of the GNU General Public License as published by |
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| 8 | the Free Software Foundation; either version 2, or (at your option) |
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| 9 | any later version. |
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[1855] | 10 | |
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| 11 | ### File Specific: |
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[3925] | 12 | main-programmer: Benjamin Grauer |
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[1855] | 13 | co-programmer: ... |
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[1853] | 14 | */ |
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| 15 | |
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[5357] | 16 | #define DEBUG_SPECIAL_MODULE DEBUG_MODULE_GRAPHICS |
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[1853] | 17 | |
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[3925] | 18 | #include "particle_system.h" |
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[1853] | 19 | |
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[3930] | 20 | #include "particle_emitter.h" |
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[4338] | 21 | |
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| 22 | #include "field.h" |
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[5511] | 23 | #include "model.h" |
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[4338] | 24 | |
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[5155] | 25 | #include "load_param.h" |
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[5652] | 26 | #include "factory.h" |
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[3942] | 27 | #include "material.h" |
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[4338] | 28 | #include "state.h" |
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[5446] | 29 | #include "shell_command.h" |
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[3930] | 30 | |
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[5944] | 31 | #include "parser/tinyxml/tinyxml.h" |
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[6612] | 32 | #include <algorithm> |
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[4338] | 33 | |
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[1856] | 34 | using namespace std; |
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[3245] | 35 | /** |
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[4836] | 36 | * standard constructor |
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| 37 | * @param maxCount the Count of particles in the System |
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| 38 | * @param type The Type of the ParticleSystem |
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[3245] | 39 | */ |
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[6621] | 40 | ParticleSystem::ParticleSystem (unsigned int maxCount) |
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[3365] | 41 | { |
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[4602] | 42 | this->init(); |
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[4597] | 43 | |
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[4727] | 44 | this->setMaxCount(maxCount); |
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[3365] | 45 | } |
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[1853] | 46 | |
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[4677] | 47 | /** |
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[4836] | 48 | * standard deconstructor |
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[3245] | 49 | */ |
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[4176] | 50 | ParticleSystem::~ParticleSystem() |
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[3543] | 51 | { |
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[6625] | 52 | // deleting all the living Particles |
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| 53 | while (this->particles) |
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| 54 | { |
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| 55 | Particle* tmpDelPart = this->particles; |
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| 56 | this->particles = this->particles->next; |
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| 57 | delete tmpDelPart; |
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| 58 | } |
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[4123] | 59 | |
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[6625] | 60 | // deleting all the dead particles |
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| 61 | while (this->deadList) |
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| 62 | { |
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| 63 | Particle* tmpDelPart = this->deadList; |
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| 64 | this->deadList = this->deadList->next; |
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| 65 | delete tmpDelPart; |
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| 66 | } |
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[4176] | 67 | |
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[6625] | 68 | while(!this->emitters.empty()) |
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| 69 | { |
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| 70 | this->removeEmitter(this->emitters.front()); |
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| 71 | } |
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[6623] | 72 | |
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[3543] | 73 | } |
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[1853] | 74 | |
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[3945] | 75 | /** |
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[4602] | 76 | \brief initializes the ParticleSystem with default values |
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| 77 | */ |
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[4746] | 78 | void ParticleSystem::init() |
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[4602] | 79 | { |
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| 80 | this->setClassID(CL_PARTICLE_SYSTEM, "ParticleSystem"); |
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| 81 | |
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[4727] | 82 | this->setMaxCount(PARTICLE_DEFAULT_MAX_COUNT); |
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[4602] | 83 | this->count = 0; |
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| 84 | this->particles = NULL; |
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| 85 | this->deadList = NULL; |
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| 86 | this->setConserve(1); |
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| 87 | this->setLifeSpan(1); |
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[6612] | 88 | |
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| 89 | this->toList(OM_ENVIRON); |
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[4602] | 90 | } |
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| 91 | |
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| 92 | |
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| 93 | /** |
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| 94 | * loads Parameters from a TiXmlElement |
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| 95 | * @param root the XML-element to load from. |
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| 96 | */ |
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| 97 | void ParticleSystem::loadParams(const TiXmlElement* root) |
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| 98 | { |
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[6512] | 99 | WorldEntity::loadParams(root); |
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| 100 | PhysicsInterface::loadParams(root); |
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[4602] | 101 | |
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[5671] | 102 | LoadParam(root, "max-count", this, ParticleSystem, setMaxCount) |
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[6625] | 103 | .describe("the maximal count of Particles, that can be emitted into this system"); |
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[4727] | 104 | |
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[5671] | 105 | LoadParam(root, "life-span", this, ParticleSystem, setLifeSpan) |
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[6625] | 106 | .describe("sets the life-span of the Particles."); |
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[4602] | 107 | |
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[5671] | 108 | LoadParam(root, "conserve", this, ParticleSystem, setConserve) |
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[6625] | 109 | .describe("sets the Conserve factor of the Particles (1.0: they keep all their energy, 0.0:they keep no energy)"); |
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[4725] | 110 | |
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[6623] | 111 | LoadParamXML(root, "emitters", this, ParticleSystem, loadEmitters); |
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[6222] | 112 | |
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[5654] | 113 | LOAD_PARAM_START_CYCLE(root, element); |
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[4727] | 114 | { |
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[5654] | 115 | element->ToText(); |
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[6625] | 116 | // PER-PARTICLE-ATTRIBUTES: |
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[5654] | 117 | LoadParam_CYCLE(element, "radius", this, ParticleSystem, setRadius) |
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[6625] | 118 | .describe("The Radius of each particle over time (TimeIndex [0-1], radius at TimeIndex, randomRadius at TimeIndex)"); |
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[4725] | 119 | |
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[5654] | 120 | LoadParam_CYCLE(element, "mass", this, ParticleSystem, setMass) |
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[6625] | 121 | .describe("The Mass of each particle over time (TimeIndex: [0-1], mass at TimeIndex, randomMass at TimeIndex)"); |
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[4725] | 122 | |
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[5654] | 123 | LoadParam_CYCLE(element, "color", this, ParticleSystem, setColor) |
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[6625] | 124 | .describe("The Color of each particle over time (TimeIndex: [0-1], red: [0-1], green: [0-1], blue: [0-1], alpha: [0-1])"); |
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[4727] | 125 | } |
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[5654] | 126 | LOAD_PARAM_END_CYCLE(element); |
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[4602] | 127 | } |
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[4727] | 128 | |
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[4725] | 129 | /** |
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[6623] | 130 | * @brief loads the Emitters from An XML-Root |
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| 131 | * @param root the XML-Element to load all emitters from |
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| 132 | */ |
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| 133 | void ParticleSystem::loadEmitters(const TiXmlElement* root) |
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| 134 | { |
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| 135 | LOAD_PARAM_START_CYCLE(root, element); |
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| 136 | { |
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| 137 | BaseObject* emitter = Factory::fabricate(element); |
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| 138 | if (emitter->isA(CL_PARTICLE_EMITTER)) |
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| 139 | this->addEmitter(dynamic_cast<ParticleEmitter*>(emitter)); |
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| 140 | else |
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| 141 | { |
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| 142 | PRINTF(2)("Tried to load an Element of type '%s' that should be a ParticleEmitter onto '%s::%s'.\n", |
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| 143 | emitter->getClassName(), this->getClassName(), this->getName()); |
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| 144 | delete emitter; |
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| 145 | } |
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| 146 | } |
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| 147 | LOAD_PARAM_END_CYCLE(element); |
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| 148 | } |
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| 149 | |
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| 150 | /** |
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[4836] | 151 | * @param maxCount the maximum count of particles that can be emitted |
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[4727] | 152 | */ |
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| 153 | void ParticleSystem::setMaxCount(int maxCount) |
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| 154 | { |
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| 155 | this->maxCount = maxCount; |
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| 156 | } |
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| 157 | |
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[3932] | 158 | // setting properties |
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[4478] | 159 | /** |
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[4836] | 160 | * Sets the lifespan of newly created particles |
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[4597] | 161 | */ |
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[3932] | 162 | void ParticleSystem::setLifeSpan(float lifeSpan, float randomLifeSpan) |
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| 163 | { |
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[3934] | 164 | this->lifeSpan = lifeSpan; |
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| 165 | this->randomLifeSpan = randomLifeSpan; |
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[3932] | 166 | } |
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| 167 | |
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[3945] | 168 | /** |
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[4836] | 169 | * sets the conserve Factor of newly created particles |
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[3945] | 170 | */ |
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[4430] | 171 | void ParticleSystem::setConserve(float conserve) |
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[3932] | 172 | { |
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[4430] | 173 | if (conserve > 1.0) |
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| 174 | this->conserve = 1.0; |
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| 175 | else if (conserve < 0.0) |
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| 176 | this->conserve = 0.0; |
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| 177 | else |
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| 178 | this->conserve = conserve; |
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[3932] | 179 | } |
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| 180 | |
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[4430] | 181 | ///////////////////////////// |
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| 182 | /* Per-Particle Attributes */ |
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| 183 | ///////////////////////////// |
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[3945] | 184 | /** |
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[4836] | 185 | * sets a key in the radius-animation on a per-particle basis |
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| 186 | * @param lifeCycleTime the time (partilceLifeTime/particleAge) [0-1] |
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| 187 | * @param radius the radius at this position |
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| 188 | * @param randRadius the randRadius at this position |
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[4378] | 189 | */ |
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[4430] | 190 | void ParticleSystem::setRadius(float lifeCycleTime, float radius, float randRadius) |
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[4378] | 191 | { |
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[4649] | 192 | this->radiusAnim.changeEntry(lifeCycleTime, radius); |
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| 193 | this->randRadiusAnim.changeEntry(lifeCycleTime, randRadius); |
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[4378] | 194 | } |
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| 195 | |
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| 196 | /** |
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[4836] | 197 | * sets a key in the mass-animation on a per-particle basis |
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| 198 | * @param lifeCycleTime the time (partilceLifeTime/particleAge) [0-1] |
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| 199 | * @param mass the mass at this position |
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| 200 | * @param randMass the randomMass at this position |
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[3945] | 201 | */ |
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[4430] | 202 | void ParticleSystem::setMass(float lifeCycleTime, float mass, float randMass) |
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[3932] | 203 | { |
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[4649] | 204 | this->massAnim.changeEntry(lifeCycleTime, mass); |
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| 205 | this->randMassAnim.changeEntry(lifeCycleTime, randMass); |
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[3932] | 206 | } |
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| 207 | |
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[3945] | 208 | /** |
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[4836] | 209 | * sets a key in the color-animation on a per-particle basis |
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| 210 | * @param lifeCycleTime: the time (partilceLifeTime/particleAge) [0-1] |
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| 211 | * @param red: red |
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| 212 | * @param green: green |
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| 213 | * @param blue: blue |
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| 214 | * @param alpha: alpha |
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[4338] | 215 | */ |
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[4725] | 216 | void ParticleSystem::setColor(float lifeCycleTime, float red, float green, float blue, float alpha) |
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[4338] | 217 | { |
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[4649] | 218 | this->colorAnim[0].changeEntry(lifeCycleTime, red); |
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| 219 | this->colorAnim[1].changeEntry(lifeCycleTime, green); |
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| 220 | this->colorAnim[2].changeEntry(lifeCycleTime, blue); |
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| 221 | this->colorAnim[3].changeEntry(lifeCycleTime, alpha); |
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[4338] | 222 | } |
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| 223 | |
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[6612] | 224 | |
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| 225 | void ParticleSystem::addEmitter(ParticleEmitter* emitter) |
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| 226 | { |
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[6619] | 227 | assert (emitter != NULL); |
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| 228 | if (emitter->getSystem() != NULL) |
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| 229 | emitter->getSystem()->removeEmitter(emitter); |
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[6625] | 230 | emitter->system = this; |
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[6612] | 231 | this->emitters.push_back(emitter); |
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| 232 | } |
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| 233 | |
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| 234 | |
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| 235 | void ParticleSystem::removeEmitter(ParticleEmitter* emitter) |
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| 236 | { |
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[6625] | 237 | assert (emitter != NULL); |
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| 238 | emitter->system = NULL; |
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| 239 | this->emitters.remove(emitter); |
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| 240 | /* std::list<ParticleEmitter*>::iterator it = std::find(this->emitters.begin(), this->emitters.end(), emitter); |
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[6612] | 241 | if (it != this->emitters.end()) |
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[6625] | 242 | this->emitters.erase(it);*/ |
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[6612] | 243 | } |
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| 244 | |
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[4338] | 245 | /** |
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[4836] | 246 | * ticks the system. |
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| 247 | * @param dt the time to tick all the Particles of the System |
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[3932] | 248 | |
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[3945] | 249 | this is used to get all the particles some motion |
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| 250 | */ |
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[3931] | 251 | void ParticleSystem::tick(float dt) |
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| 252 | { |
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[3934] | 253 | Particle* tickPart = particles; // the particle to Tick |
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[4692] | 254 | Particle* prevPart = NULL; |
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[3934] | 255 | while (likely(tickPart != NULL)) |
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[6625] | 256 | { |
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| 257 | // applying force to the System. |
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| 258 | if (likely (tickPart->mass > 0.0)) |
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| 259 | tickPart->velocity += tickPart->extForce / tickPart->mass * dt; |
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| 260 | // rendering new position. |
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| 261 | tickPart->position += tickPart->velocity * dt; |
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| 262 | tickPart->orientation += tickPart->momentum *dt; |
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[4687] | 263 | |
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[6625] | 264 | tickPart->radius = radiusAnim.getValue(tickPart->lifeCycle) |
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| 265 | + randRadiusAnim.getValue(tickPart->lifeCycle) * tickPart->radiusRand; |
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[4434] | 266 | |
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[6625] | 267 | tickPart->mass = massAnim.getValue(tickPart->lifeCycle) |
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| 268 | + randMassAnim.getValue(tickPart->lifeCycle) * tickPart->massRand; |
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[4597] | 269 | |
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[6625] | 270 | tickPart->extForce = Vector(0,0,0); |
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[4338] | 271 | |
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[6625] | 272 | // applying Color |
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| 273 | tickPart->color[0] = this->colorAnim[0].getValue(tickPart->lifeCycle); |
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| 274 | tickPart->color[1] = this->colorAnim[1].getValue(tickPart->lifeCycle); |
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| 275 | tickPart->color[2] = this->colorAnim[2].getValue(tickPart->lifeCycle); |
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| 276 | tickPart->color[3] = this->colorAnim[3].getValue(tickPart->lifeCycle); |
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[4431] | 277 | |
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[6625] | 278 | // many more to come |
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[3932] | 279 | |
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[6625] | 280 | if (this->conserve < 1.0) |
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| 281 | { |
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| 282 | tickPart->velocity *= this->conserve; |
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| 283 | tickPart->momentum *= this->conserve; |
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| 284 | } |
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| 285 | // find out if we have to delete tickPart |
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| 286 | if (unlikely((tickPart->lifeCycle += dt/tickPart->lifeTime) >= 1.0)) |
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| 287 | { |
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| 288 | // remove the particle from the list |
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| 289 | if (likely(prevPart != NULL)) |
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[4691] | 290 | { |
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[6625] | 291 | prevPart->next = tickPart->next; |
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| 292 | tickPart->next = this->deadList; |
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| 293 | this->deadList = tickPart; |
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| 294 | tickPart = prevPart->next; |
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[4691] | 295 | } |
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[3934] | 296 | else |
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[6625] | 297 | { |
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| 298 | prevPart = NULL; |
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| 299 | this->particles = tickPart->next; |
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| 300 | tickPart->next = this->deadList; |
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| 301 | this->deadList = tickPart; |
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| 302 | tickPart = this->particles; |
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| 303 | } |
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| 304 | --this->count; |
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[3932] | 305 | } |
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[6625] | 306 | else |
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| 307 | { |
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| 308 | prevPart = tickPart; |
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| 309 | tickPart = tickPart->next; |
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| 310 | } |
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| 311 | } |
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[6612] | 312 | |
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[6625] | 313 | std::list<ParticleEmitter*>::iterator emitter; |
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| 314 | for (emitter = this->emitters.begin(); emitter != this->emitters.end(); emitter++) |
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| 315 | (*emitter)->tick(dt); |
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[3932] | 316 | } |
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| 317 | |
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[4597] | 318 | /** |
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[4836] | 319 | * applies some force to a Particle. |
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| 320 | * @param field the Field to apply. |
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[4338] | 321 | */ |
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[4395] | 322 | void ParticleSystem::applyField(Field* field) |
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[4338] | 323 | { |
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| 324 | Particle* tickPart = particles; |
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| 325 | while (tickPart) |
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[6625] | 326 | { |
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| 327 | tickPart->extForce += field->calcForce(tickPart->position); |
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| 328 | tickPart = tickPart->next; |
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| 329 | } |
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[4338] | 330 | } |
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| 331 | |
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| 332 | |
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[3945] | 333 | /** |
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[4836] | 334 | * @returns the count of Faces of this ParticleSystem |
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[4677] | 335 | */ |
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[4746] | 336 | unsigned int ParticleSystem::getFaceCount() const |
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[4677] | 337 | { |
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[6621] | 338 | return this->count; |
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[4677] | 339 | } |
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| 340 | |
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| 341 | |
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| 342 | /** |
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[4836] | 343 | * draws all the Particles of this System |
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[4338] | 344 | |
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| 345 | The Cases in this Function all do the same: |
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| 346 | Drawing all the particles with the appropriate Type. |
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| 347 | This is just the fastest Way to do this, but will most likely be changed in the future. |
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[4663] | 348 | */ |
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[6621] | 349 | // void ParticleSystem::draw() const |
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| 350 | // { |
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| 351 | // glPushAttrib(GL_ENABLE_BIT); |
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| 352 | // |
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| 353 | // Particle* drawPart = particles; |
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| 354 | // |
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| 355 | // switch (this->particleType) |
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| 356 | // { |
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| 357 | // case PARTICLE_SPARK: |
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| 358 | // glDisable(GL_LIGHTING); |
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| 359 | // glDepthMask(GL_FALSE); |
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| 360 | // //glEnable(GL_LINE_SMOOTH); |
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| 361 | // glEnable(GL_BLEND); |
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| 362 | // |
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| 363 | // glBegin(GL_LINES); |
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| 364 | // while (likely(drawPart != NULL)) |
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| 365 | // { |
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| 366 | // glColor4fv(drawPart->color); |
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| 367 | // glVertex3f(drawPart->position.x, drawPart->position.y, drawPart->position.z); |
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| 368 | // glVertex3f(drawPart->position.x - drawPart->velocity.x * drawPart->radius, |
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| 369 | // drawPart->position.y - drawPart->velocity.y * drawPart->radius, |
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| 370 | // drawPart->position.z - drawPart->velocity.z * drawPart->radius); |
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| 371 | // drawPart = drawPart->next; |
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| 372 | // } |
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| 373 | // glEnd(); |
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| 374 | // break; |
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| 375 | // |
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| 376 | // case PARTICLE_MODEL: |
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| 377 | // { |
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| 378 | // GLfloat matrix[4][4]; |
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| 379 | // |
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| 380 | // if (likely(this->getModel() != NULL)) |
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| 381 | // while (likely(drawPart != NULL)) |
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| 382 | // { |
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| 383 | // glPushMatrix(); |
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| 384 | // glMatrixMode(GL_MODELVIEW); |
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| 385 | // /* move */ |
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| 386 | // glTranslatef(drawPart->position.x, drawPart->position.y, drawPart->position.z); |
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| 387 | // /* scale */ |
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| 388 | // glScalef(drawPart->radius, drawPart->radius, drawPart->radius); |
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| 389 | // /* rotate */ |
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| 390 | // drawPart->orientation.matrix (matrix); |
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| 391 | // glMultMatrixf((float*)matrix); |
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| 392 | // |
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| 393 | // this->getModel()->draw(); |
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| 394 | // |
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| 395 | // glPopMatrix(); |
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| 396 | // drawPart = drawPart->next; |
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| 397 | // } |
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| 398 | // else |
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| 399 | // PRINTF(2)("no model loaded onto ParticleSystem-%s\n", this->getName()); |
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| 400 | // } |
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| 401 | // break; |
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| 402 | // |
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| 403 | // case PARTICLE_DOT: |
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| 404 | // glDisable(GL_LIGHTING); |
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| 405 | // glBegin(GL_POINTS); |
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| 406 | // while (likely(drawPart != NULL)) |
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| 407 | // { |
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| 408 | // glColor4fv(drawPart->color); |
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| 409 | // |
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| 410 | // glLineWidth(drawPart->radius); |
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| 411 | // |
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| 412 | // glVertex3f(drawPart->position.x, drawPart->position.y, drawPart->position.z); |
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| 413 | // drawPart = drawPart->next; |
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| 414 | // } |
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| 415 | // glEnd(); |
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| 416 | // break; |
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| 417 | // } |
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| 418 | // glPopAttrib(); |
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| 419 | // } |
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[4338] | 420 | |
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[3945] | 421 | /** |
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[4836] | 422 | * adds a new Particle to the System |
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| 423 | * @param position the initial position, where the particle gets emitted. |
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| 424 | * @param velocity the initial velocity of the particle. |
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| 425 | * @param orientation the initial orientation of the Paritcle. |
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| 426 | * @param momentum the initial momentum of the Particle (the speed of its rotation). |
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| 427 | * @param data some more data given by the emitter |
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[3945] | 428 | */ |
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[4690] | 429 | void ParticleSystem::addParticle(const Vector& position, const Vector& velocity, const Quaternion& orientation, const Quaternion& momentum, unsigned int data) |
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[3932] | 430 | { |
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[3934] | 431 | if (this->count <= this->maxCount) |
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[6625] | 432 | { |
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| 433 | // if it is the first Particle |
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| 434 | if (unlikely(particles == NULL)) |
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[3932] | 435 | { |
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[6625] | 436 | if (likely(deadList != NULL)) |
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| 437 | { |
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| 438 | this->particles = this->deadList; |
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| 439 | deadList = deadList->next; |
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| 440 | } |
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[3934] | 441 | else |
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[6625] | 442 | { |
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| 443 | PRINTF(5)("Generating new Particle\n"); |
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| 444 | this->particles = new Particle; |
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| 445 | } |
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| 446 | this->particles->next = NULL; |
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| 447 | } |
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| 448 | // filling the List from the beginning |
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| 449 | else |
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| 450 | { |
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| 451 | Particle* tmpPart; |
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| 452 | if (likely(deadList != NULL)) |
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| 453 | { |
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| 454 | tmpPart = this->deadList; |
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| 455 | deadList = deadList->next; |
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| 456 | } |
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| 457 | else |
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| 458 | { |
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| 459 | PRINTF(5)("Generating new Particle\n"); |
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| 460 | tmpPart = new Particle; |
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| 461 | } |
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| 462 | tmpPart->next = this->particles; |
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| 463 | this->particles = tmpPart; |
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| 464 | } |
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| 465 | particles->lifeTime = this->lifeSpan + (float)(rand()/RAND_MAX)* this->randomLifeSpan; |
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| 466 | particles->lifeCycle = 0.0; |
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| 467 | particles->position = position; |
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| 468 | particles->velocity = velocity; |
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[3951] | 469 | |
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[6625] | 470 | particles->orientation = orientation; |
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| 471 | particles->momentum = momentum; |
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[4687] | 472 | |
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[6625] | 473 | // particle->rotation = ; //! @todo rotation is once again something to be done. |
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| 474 | particles->massRand = 2*(float)rand()/RAND_MAX -1; |
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| 475 | particles->radiusRand = 2* (float)rand()/RAND_MAX -1; |
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| 476 | particles->mass = this->massAnim.getValue(0.0) + this->randMassAnim.getValue(0.0)*particles->massRand; |
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| 477 | particles->radius = this->radiusAnim.getValue(0.0) + this->randRadiusAnim.getValue(0.0)*particles->radiusRand; |
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[3934] | 478 | |
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[6625] | 479 | ++this->count; |
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| 480 | } |
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[3932] | 481 | else |
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[4017] | 482 | PRINTF(5)("maximum count of particles reached not adding any more\n"); |
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[3932] | 483 | } |
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[3931] | 484 | |
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[3944] | 485 | /** |
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[4836] | 486 | * outputs some nice debug information |
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[3944] | 487 | */ |
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[4746] | 488 | void ParticleSystem::debug() const |
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[3944] | 489 | { |
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| 490 | PRINT(0)(" ParticleCount: %d, maximumCount: %d :: filled %d%%\n", this->count, this->maxCount, 100*this->count/this->maxCount); |
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[4123] | 491 | if (deadList) |
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[6625] | 492 | { |
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| 493 | PRINT(0)(" - ParticleDeadList is used: "); |
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| 494 | int i = 1; |
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| 495 | Particle* tmpPart = this->deadList; |
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| 496 | while (tmpPart = tmpPart->next) ++i; |
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| 497 | PRINT(0)("count: %d\n", i); |
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| 498 | } |
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[3944] | 499 | } |
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