1 | /* |
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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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10 | |
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11 | ### File Specific: |
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12 | main-programmer: Benjamin Grauer |
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13 | co-programmer: ... |
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14 | */ |
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15 | |
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16 | #define DEBUG_SPECIAL_MODULE DEBUG_MODULE_GRAPHICS |
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17 | |
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18 | #include "particle_system.h" |
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19 | |
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20 | #include "particle_emitter.h" |
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21 | #include "particle_engine.h" |
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22 | |
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23 | #include "field.h" |
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24 | #include "model.h" |
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25 | |
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26 | #include "load_param.h" |
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27 | #include "factory.h" |
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28 | #include "material.h" |
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29 | #include "state.h" |
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30 | #include "shell_command.h" |
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31 | |
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32 | #include "parser/tinyxml/tinyxml.h" |
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33 | |
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34 | CREATE_FACTORY(ParticleSystem, CL_PARTICLE_SYSTEM); |
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35 | SHELL_COMMAND(texture, ParticleSystem, setMaterialTexture) |
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36 | ->defaultValues(1, "maps/evil-flower.png"); |
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37 | |
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38 | using namespace std; |
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39 | |
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40 | /** |
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41 | * standard constructor |
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42 | * @param maxCount the Count of particles in the System |
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43 | * @param type The Type of the ParticleSystem |
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44 | */ |
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45 | ParticleSystem::ParticleSystem (unsigned int maxCount, PARTICLE_TYPE type) |
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46 | { |
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47 | this->init(); |
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48 | |
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49 | this->setMaxCount(maxCount); |
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50 | this->setType(type, 1); |
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51 | } |
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52 | |
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53 | /** |
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54 | * @brief creates a Particle System out of a XML-element |
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55 | * @param root: the XML-element to load from |
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56 | */ |
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57 | ParticleSystem::ParticleSystem(const TiXmlElement* root) |
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58 | { |
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59 | this->init(); |
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60 | |
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61 | this->loadParams(root); |
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62 | } |
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63 | |
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64 | /** |
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65 | * standard deconstructor |
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66 | */ |
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67 | ParticleSystem::~ParticleSystem() |
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68 | { |
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69 | // delete what has to be deleted here |
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70 | ParticleEngine::getInstance()->removeSystem(this); |
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71 | |
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72 | // deleting all the living Particles |
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73 | while (this->particles) |
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74 | { |
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75 | Particle* tmpDelPart = this->particles; |
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76 | this->particles = this->particles->next; |
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77 | delete tmpDelPart; |
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78 | } |
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79 | |
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80 | // deleting all the dead particles |
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81 | while (this->deadList) |
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82 | { |
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83 | Particle* tmpDelPart = this->deadList; |
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84 | this->deadList = this->deadList->next; |
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85 | delete tmpDelPart; |
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86 | } |
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87 | |
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88 | if (this->material) |
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89 | delete this->material; |
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90 | } |
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91 | |
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92 | /** |
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93 | \brief initializes the ParticleSystem with default values |
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94 | */ |
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95 | void ParticleSystem::init() |
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96 | { |
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97 | this->setClassID(CL_PARTICLE_SYSTEM, "ParticleSystem"); |
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98 | |
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99 | this->material = NULL; |
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100 | this->setMaxCount(PARTICLE_DEFAULT_MAX_COUNT); |
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101 | this->count = 0; |
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102 | this->particles = NULL; |
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103 | this->deadList = NULL; |
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104 | this->setConserve(1); |
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105 | this->setLifeSpan(1); |
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106 | this->glID = NULL; |
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107 | this->setType(PARTICLE_DEFAULT_TYPE, 1); |
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108 | ParticleEngine::getInstance()->addSystem(this); |
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109 | } |
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110 | |
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111 | |
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112 | /** |
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113 | * loads Parameters from a TiXmlElement |
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114 | * @param root the XML-element to load from. |
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115 | */ |
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116 | void ParticleSystem::loadParams(const TiXmlElement* root) |
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117 | { |
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118 | WorldEntity::loadParams(root); |
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119 | PhysicsInterface::loadParams(root); |
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120 | |
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121 | LoadParam(root, "max-count", this, ParticleSystem, setMaxCount) |
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122 | .describe("the maximal count of Particles, that can be emitted into this system"); |
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123 | |
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124 | LoadParam(root, "life-span", this, ParticleSystem, setLifeSpan) |
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125 | .describe("sets the life-span of the Particles."); |
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126 | |
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127 | LoadParam(root, "conserve", this, ParticleSystem, setConserve) |
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128 | .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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129 | |
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130 | LoadParam(root, "type", this, ParticleSystem, setType) |
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131 | .describe("sets the type of the Particles, (dot, spark, sprite or model)"); |
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132 | |
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133 | LoadParam(root, "texture", this, ParticleSystem, setMaterialTexture); |
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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 | element->ToText(); |
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138 | // PER-PARTICLE-ATTRIBUTES: |
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139 | LoadParam_CYCLE(element, "radius", this, ParticleSystem, setRadius) |
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140 | .describe("The Radius of each particle over time (TimeIndex [0-1], radius at TimeIndex, randomRadius at TimeIndex)"); |
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141 | |
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142 | LoadParam_CYCLE(element, "mass", this, ParticleSystem, setMass) |
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143 | .describe("The Mass of each particle over time (TimeIndex: [0-1], mass at TimeIndex, randomMass at TimeIndex)"); |
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144 | |
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145 | LoadParam_CYCLE(element, "color", this, ParticleSystem, setColor) |
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146 | .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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147 | } |
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148 | LOAD_PARAM_END_CYCLE(element); |
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149 | |
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150 | } |
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151 | |
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152 | /** |
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153 | * @param maxCount the maximum count of particles that can be emitted |
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154 | */ |
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155 | void ParticleSystem::setMaxCount(int maxCount) |
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156 | { |
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157 | this->maxCount = maxCount; |
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158 | } |
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159 | |
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160 | |
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161 | /** |
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162 | * @param particleType the type of particles in this System |
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163 | * @param count how many particles (in PARTICLE_MULTI-mode) |
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164 | @todo this will be different |
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165 | */ |
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166 | void ParticleSystem::setType(const char* particleType) |
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167 | { |
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168 | if (!strcmp(particleType, "dot")) |
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169 | this->setType(PARTICLE_DOT); |
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170 | else if(!strcmp(particleType, "spark")) |
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171 | this->setType(PARTICLE_SPARK); |
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172 | else if(!strcmp(particleType, "model")) |
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173 | this->setType(PARTICLE_MODEL); |
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174 | else // if (strcmp(particleType, "SPRITE")) |
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175 | this->setType(PARTICLE_SPRITE); |
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176 | } |
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177 | |
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178 | /** |
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179 | * @param particleType the type of particles in this System |
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180 | * @param count how many particles (in PARTICLE_MULTI-mode) |
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181 | @todo this MUST be different |
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182 | */ |
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183 | void ParticleSystem::setType(PARTICLE_TYPE particleType, int count) |
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184 | { |
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185 | this->particleType = particleType; |
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186 | this->dialectCount = count; |
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187 | // if (glID != NULL) |
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188 | // delete glID; |
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189 | |
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190 | // glID = new GLuint[count]; |
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191 | // for (int i = 0; i< count; i++) |
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192 | // glID[i] = 0; |
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193 | |
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194 | // glID[0] = glGenLists(count); |
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195 | if (this->material) |
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196 | delete this->material; |
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197 | this->material = NULL; |
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198 | |
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199 | switch (this->particleType) |
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200 | { |
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201 | case PARTICLE_SPRITE: |
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202 | this->material = new Material("transperencyMap"); |
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203 | this->material->setDiffuseMap("maps/radialTransparency.png"); |
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204 | // material->setTransparency(.5); |
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205 | break; |
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206 | } |
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207 | } |
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208 | |
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209 | // setting properties |
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210 | /** |
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211 | * sets the material to an external material |
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212 | * @param material: the material to set this material to. |
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213 | |
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214 | !! important if the extern material gets deleted it MUST be unregistered here or segfault !! |
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215 | */ |
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216 | void ParticleSystem::setMaterial(Material* material) |
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217 | { |
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218 | this->material = material; |
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219 | } |
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220 | |
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221 | void ParticleSystem::setMaterialTexture(const char* textureFile) |
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222 | { |
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223 | if (this->material != NULL) |
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224 | this->material->setDiffuseMap(textureFile); |
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225 | } |
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226 | |
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227 | /** |
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228 | * Sets the lifespan of newly created particles |
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229 | */ |
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230 | void ParticleSystem::setLifeSpan(float lifeSpan, float randomLifeSpan) |
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231 | { |
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232 | this->lifeSpan = lifeSpan; |
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233 | this->randomLifeSpan = randomLifeSpan; |
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234 | } |
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235 | |
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236 | /** |
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237 | * sets the conserve Factor of newly created particles |
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238 | */ |
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239 | void ParticleSystem::setConserve(float conserve) |
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240 | { |
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241 | if (conserve > 1.0) |
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242 | this->conserve = 1.0; |
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243 | else if (conserve < 0.0) |
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244 | this->conserve = 0.0; |
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245 | else |
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246 | this->conserve = conserve; |
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247 | } |
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248 | |
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249 | ///////////////////////////// |
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250 | /* Per-Particle Attributes */ |
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251 | ///////////////////////////// |
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252 | /** |
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253 | * sets a key in the radius-animation on a per-particle basis |
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254 | * @param lifeCycleTime the time (partilceLifeTime/particleAge) [0-1] |
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255 | * @param radius the radius at this position |
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256 | * @param randRadius the randRadius at this position |
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257 | */ |
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258 | void ParticleSystem::setRadius(float lifeCycleTime, float radius, float randRadius) |
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259 | { |
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260 | this->radiusAnim.changeEntry(lifeCycleTime, radius); |
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261 | this->randRadiusAnim.changeEntry(lifeCycleTime, randRadius); |
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262 | } |
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263 | |
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264 | /** |
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265 | * sets a key in the mass-animation on a per-particle basis |
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266 | * @param lifeCycleTime the time (partilceLifeTime/particleAge) [0-1] |
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267 | * @param mass the mass at this position |
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268 | * @param randMass the randomMass at this position |
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269 | */ |
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270 | void ParticleSystem::setMass(float lifeCycleTime, float mass, float randMass) |
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271 | { |
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272 | this->massAnim.changeEntry(lifeCycleTime, mass); |
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273 | this->randMassAnim.changeEntry(lifeCycleTime, randMass); |
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274 | } |
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275 | |
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276 | /** |
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277 | * sets a key in the color-animation on a per-particle basis |
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278 | * @param lifeCycleTime: the time (partilceLifeTime/particleAge) [0-1] |
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279 | * @param red: red |
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280 | * @param green: green |
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281 | * @param blue: blue |
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282 | * @param alpha: alpha |
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283 | */ |
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284 | void ParticleSystem::setColor(float lifeCycleTime, float red, float green, float blue, float alpha) |
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285 | { |
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286 | this->colorAnim[0].changeEntry(lifeCycleTime, red); |
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287 | this->colorAnim[1].changeEntry(lifeCycleTime, green); |
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288 | this->colorAnim[2].changeEntry(lifeCycleTime, blue); |
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289 | this->colorAnim[3].changeEntry(lifeCycleTime, alpha); |
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290 | } |
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291 | |
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292 | /** |
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293 | * ticks the system. |
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294 | * @param dt the time to tick all the Particles of the System |
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295 | |
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296 | this is used to get all the particles some motion |
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297 | */ |
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298 | void ParticleSystem::tick(float dt) |
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299 | { |
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300 | Particle* tickPart = particles; // the particle to Tick |
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301 | Particle* prevPart = NULL; |
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302 | while (likely(tickPart != NULL)) |
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303 | { |
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304 | // applying force to the System. |
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305 | if (likely (tickPart->mass > 0.0)) |
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306 | tickPart->velocity += tickPart->extForce / tickPart->mass * dt; |
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307 | // rendering new position. |
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308 | tickPart->position += tickPart->velocity * dt; |
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309 | tickPart->orientation += tickPart->momentum *dt; |
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310 | |
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311 | tickPart->radius = radiusAnim.getValue(tickPart->lifeCycle) |
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312 | + randRadiusAnim.getValue(tickPart->lifeCycle) * tickPart->radiusRand; |
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313 | |
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314 | tickPart->mass = massAnim.getValue(tickPart->lifeCycle) |
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315 | + randMassAnim.getValue(tickPart->lifeCycle) * tickPart->massRand; |
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316 | |
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317 | tickPart->extForce = Vector(0,0,0); |
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318 | |
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319 | // applying Color |
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320 | tickPart->color[0] = this->colorAnim[0].getValue(tickPart->lifeCycle); |
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321 | tickPart->color[1] = this->colorAnim[1].getValue(tickPart->lifeCycle); |
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322 | tickPart->color[2] = this->colorAnim[2].getValue(tickPart->lifeCycle); |
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323 | tickPart->color[3] = this->colorAnim[3].getValue(tickPart->lifeCycle); |
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324 | |
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325 | // many more to come |
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326 | |
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327 | if (this->conserve < 1.0) |
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328 | { |
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329 | tickPart->velocity *= this->conserve; |
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330 | tickPart->momentum *= this->conserve; |
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331 | } |
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332 | // find out if we have to delete tickPart |
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333 | if (unlikely((tickPart->lifeCycle += dt/tickPart->lifeTime) >= 1.0)) |
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334 | { |
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335 | // remove the particle from the list |
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336 | if (likely(prevPart != NULL)) |
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337 | { |
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338 | prevPart->next = tickPart->next; |
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339 | tickPart->next = this->deadList; |
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340 | this->deadList = tickPart; |
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341 | tickPart = prevPart->next; |
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342 | } |
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343 | else |
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344 | { |
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345 | prevPart = NULL; |
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346 | this->particles = tickPart->next; |
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347 | tickPart->next = this->deadList; |
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348 | this->deadList = tickPart; |
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349 | tickPart = this->particles; |
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350 | } |
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351 | --this->count; |
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352 | } |
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353 | else |
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354 | { |
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355 | prevPart = tickPart; |
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356 | tickPart = tickPart->next; |
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357 | } |
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358 | } |
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359 | } |
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360 | |
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361 | /** |
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362 | * applies some force to a Particle. |
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363 | * @param field the Field to apply. |
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364 | */ |
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365 | void ParticleSystem::applyField(Field* field) |
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366 | { |
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367 | Particle* tickPart = particles; |
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368 | while (tickPart) |
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369 | { |
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370 | tickPart->extForce += field->calcForce(tickPart->position); |
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371 | tickPart = tickPart->next; |
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372 | } |
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373 | } |
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374 | |
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375 | |
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376 | /** |
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377 | * @returns the count of Faces of this ParticleSystem |
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378 | */ |
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379 | unsigned int ParticleSystem::getFaceCount() const |
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380 | { |
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381 | switch (this->particleType) |
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382 | { |
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383 | case PARTICLE_SPRITE: |
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384 | return this->count; |
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385 | break; |
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386 | case PARTICLE_MODEL: |
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387 | if (this->getModel(0)) |
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388 | return this->count * this->getModel()->getTriangleCount(); |
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389 | break; |
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390 | } |
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391 | } |
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392 | |
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393 | |
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394 | /** |
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395 | * draws all the Particles of this System |
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396 | |
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397 | The Cases in this Function all do the same: |
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398 | Drawing all the particles with the appropriate Type. |
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399 | This is just the fastest Way to do this, but will most likely be changed in the future. |
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400 | */ |
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401 | void ParticleSystem::draw() const |
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402 | { |
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403 | glPushAttrib(GL_ENABLE_BIT); |
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404 | |
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405 | Particle* drawPart = particles; |
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406 | |
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407 | switch (this->particleType) |
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408 | { |
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409 | default: |
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410 | case PARTICLE_SPRITE: |
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411 | glDisable(GL_LIGHTING); |
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412 | glMatrixMode(GL_MODELVIEW); |
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413 | glDepthMask(GL_FALSE); |
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414 | |
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415 | material->select(); |
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416 | glBlendFunc(GL_SRC_ALPHA, GL_DST_ALPHA); |
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417 | |
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418 | //glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_ENV_MODE, GL_MODULATE); |
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419 | |
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420 | |
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421 | while (likely(drawPart != NULL)) |
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422 | { |
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423 | glColor4fv(drawPart->color); |
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424 | //! @todo implement a faster code for the look-at Camera algorithm. |
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425 | |
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426 | const PNode* camera = State::getCamera(); //!< @todo MUST be different |
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427 | Vector cameraPos = camera->getAbsCoor(); |
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428 | Vector cameraTargetPos = State::getCameraTarget()->getAbsCoor(); |
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429 | Vector view = cameraTargetPos - cameraPos; |
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430 | Vector up = Vector(0, 1, 0); |
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431 | up = camera->getAbsDir().apply(up); |
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432 | Vector h = up.cross(view); |
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433 | Vector v = h.cross(view); |
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434 | h.normalize(); |
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435 | v.normalize(); |
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436 | v *= .5 * drawPart->radius; |
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437 | h *= .5 * drawPart->radius; |
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438 | |
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439 | glBegin(GL_TRIANGLE_STRIP); |
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440 | glTexCoord2i(1, 1); |
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441 | glVertex3f(drawPart->position.x - h.x - v.x, |
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442 | drawPart->position.y - h.y - v.y, |
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443 | drawPart->position.z - h.z - v.z); |
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444 | glTexCoord2i(0, 1); |
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445 | glVertex3f(drawPart->position.x - h.x + v.x, |
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446 | drawPart->position.y - h.y + v.y, |
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447 | drawPart->position.z - h.z + v.z); |
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448 | glTexCoord2i(1, 0); |
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449 | glVertex3f(drawPart->position.x + h.x - v.x, |
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450 | drawPart->position.y + h.y - v.y, |
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451 | drawPart->position.z + h.z - v.z); |
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452 | glTexCoord2i(0, 0); |
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453 | glVertex3f(drawPart->position.x + h.x + v.x, |
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454 | drawPart->position.y + h.y + v.y, |
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455 | drawPart->position.z + h.z + v.z); |
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456 | |
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457 | glEnd(); |
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458 | |
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459 | drawPart = drawPart->next; |
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460 | } |
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461 | glDepthMask(GL_TRUE); |
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462 | break; |
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463 | |
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464 | case PARTICLE_SPARK: |
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465 | glDisable(GL_LIGHTING); |
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466 | glDepthMask(GL_FALSE); |
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467 | //glEnable(GL_LINE_SMOOTH); |
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468 | glEnable(GL_BLEND); |
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469 | |
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470 | glBegin(GL_LINES); |
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471 | while (likely(drawPart != NULL)) |
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472 | { |
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473 | glColor4fv(drawPart->color); |
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474 | glVertex3f(drawPart->position.x, drawPart->position.y, drawPart->position.z); |
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475 | glVertex3f(drawPart->position.x - drawPart->velocity.x * drawPart->radius, |
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476 | drawPart->position.y - drawPart->velocity.y * drawPart->radius, |
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477 | drawPart->position.z - drawPart->velocity.z * drawPart->radius); |
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478 | drawPart = drawPart->next; |
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479 | } |
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480 | glEnd(); |
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481 | break; |
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482 | |
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483 | case PARTICLE_MODEL: |
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484 | { |
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485 | GLfloat matrix[4][4]; |
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486 | |
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487 | if (likely(this->getModel() != NULL)) |
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488 | while (likely(drawPart != NULL)) |
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489 | { |
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490 | glPushMatrix(); |
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491 | glMatrixMode(GL_MODELVIEW); |
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492 | /* move */ |
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493 | glTranslatef(drawPart->position.x, drawPart->position.y, drawPart->position.z); |
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494 | /* scale */ |
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495 | glScalef(drawPart->radius, drawPart->radius, drawPart->radius); |
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496 | /* rotate */ |
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497 | drawPart->orientation.matrix (matrix); |
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498 | glMultMatrixf((float*)matrix); |
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499 | |
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500 | this->getModel()->draw(); |
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501 | |
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502 | glPopMatrix(); |
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503 | drawPart = drawPart->next; |
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504 | } |
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505 | else |
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506 | PRINTF(2)("no model loaded onto ParticleSystem-%s\n", this->getName()); |
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507 | } |
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508 | break; |
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509 | |
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510 | case PARTICLE_DOT: |
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511 | glDisable(GL_LIGHTING); |
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512 | glBegin(GL_POINTS); |
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513 | while (likely(drawPart != NULL)) |
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514 | { |
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515 | glColor4fv(drawPart->color); |
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516 | |
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517 | glLineWidth(drawPart->radius); |
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518 | |
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519 | glVertex3f(drawPart->position.x, drawPart->position.y, drawPart->position.z); |
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520 | drawPart = drawPart->next; |
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521 | } |
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522 | glEnd(); |
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523 | break; |
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524 | } |
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525 | glPopAttrib(); |
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526 | } |
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527 | |
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528 | /** |
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529 | * adds a new Particle to the System |
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530 | * @param position the initial position, where the particle gets emitted. |
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531 | * @param velocity the initial velocity of the particle. |
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532 | * @param orientation the initial orientation of the Paritcle. |
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533 | * @param momentum the initial momentum of the Particle (the speed of its rotation). |
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534 | * @param data some more data given by the emitter |
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535 | */ |
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536 | void ParticleSystem::addParticle(const Vector& position, const Vector& velocity, const Quaternion& orientation, const Quaternion& momentum, unsigned int data) |
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537 | { |
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538 | if (this->count <= this->maxCount) |
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539 | { |
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540 | // if it is the first Particle |
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541 | if (unlikely(particles == NULL)) |
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542 | { |
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543 | if (likely(deadList != NULL)) |
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544 | { |
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545 | this->particles = this->deadList; |
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546 | deadList = deadList->next; |
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547 | } |
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548 | else |
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549 | { |
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550 | PRINTF(5)("Generating new Particle\n"); |
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551 | this->particles = new Particle; |
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552 | } |
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553 | this->particles->next = NULL; |
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554 | } |
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555 | // filling the List from the beginning |
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556 | else |
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557 | { |
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558 | Particle* tmpPart; |
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559 | if (likely(deadList != NULL)) |
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560 | { |
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561 | tmpPart = this->deadList; |
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562 | deadList = deadList->next; |
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563 | } |
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564 | else |
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565 | { |
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566 | PRINTF(5)("Generating new Particle\n"); |
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567 | tmpPart = new Particle; |
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568 | } |
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569 | tmpPart->next = this->particles; |
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570 | this->particles = tmpPart; |
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571 | } |
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572 | particles->lifeTime = this->lifeSpan + (float)(rand()/RAND_MAX)* this->randomLifeSpan; |
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573 | particles->lifeCycle = 0.0; |
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574 | particles->position = position; |
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575 | particles->velocity = velocity; |
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576 | |
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577 | particles->orientation = orientation; |
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578 | particles->momentum = momentum; |
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579 | |
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580 | // particle->rotation = ; //! @todo rotation is once again something to be done. |
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581 | particles->massRand = 2*(float)rand()/RAND_MAX -1; |
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582 | particles->radiusRand = 2* (float)rand()/RAND_MAX -1; |
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583 | particles->mass = this->massAnim.getValue(0.0) + this->randMassAnim.getValue(0.0)*particles->massRand; |
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584 | particles->radius = this->radiusAnim.getValue(0.0) + this->randRadiusAnim.getValue(0.0)*particles->radiusRand; |
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585 | |
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586 | ++this->count; |
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587 | } |
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588 | else |
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589 | PRINTF(5)("maximum count of particles reached not adding any more\n"); |
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590 | } |
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591 | |
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592 | /** |
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593 | * outputs some nice debug information |
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594 | */ |
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595 | void ParticleSystem::debug() const |
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596 | { |
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597 | PRINT(0)(" ParticleSystem %s, type: ", this->getName()); |
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598 | { |
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599 | if (this->particleType == PARTICLE_MODEL) |
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600 | PRINT(0)("model"); |
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601 | else if (this->particleType == PARTICLE_SPRITE) |
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602 | PRINT(0)("sprite"); |
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603 | else if (this->particleType == PARTICLE_DOT) |
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604 | PRINT(0)("dot"); |
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605 | else if (this->particleType == PARTICLE_SPARK) |
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606 | PRINT(0)("spark"); |
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607 | |
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608 | PRINT(0)("\n"); |
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609 | } |
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610 | |
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611 | PRINT(0)(" ParticleCount: %d, maximumCount: %d :: filled %d%%\n", this->count, this->maxCount, 100*this->count/this->maxCount); |
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612 | if (deadList) |
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613 | { |
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614 | PRINT(0)(" - ParticleDeadList is used: "); |
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615 | int i = 1; |
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616 | Particle* tmpPart = this->deadList; |
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617 | while (tmpPart = tmpPart->next) ++i; |
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618 | PRINT(0)("count: %d\n", i); |
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619 | } |
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620 | } |
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