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2 | |
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3 | /* |
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4 | orxonox - the future of 3D-vertical-scrollers |
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5 | |
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6 | Copyright (C) 2004 orx |
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7 | |
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8 | This program is free software; you can redistribute it and/or modify |
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9 | it under the terms of the GNU General Public License as published by |
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10 | the Free Software Foundation; either version 2, or (at your option) |
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11 | any later version. |
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12 | |
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13 | ### File Specific: |
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14 | main-programmer: Benjamin Grauer |
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15 | co-programmer: ... |
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16 | */ |
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17 | |
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18 | #define DEBUG_SPECIAL_MODULE DEBUG_MODULE_GRAPHICS |
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19 | |
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20 | #include "light.h" |
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21 | |
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22 | #include "glincl.h" |
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23 | #include "vector.h" |
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24 | #include "tinyxml.h" |
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25 | #include "load_param.h" |
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26 | #include "factory.h" |
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27 | #include "debug.h" |
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28 | |
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29 | using namespace std; |
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30 | |
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31 | CREATE_FACTORY(Light); |
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32 | |
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33 | //! Definition of the Lights and their Names |
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34 | int lightsV[] = |
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35 | { |
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36 | GL_LIGHT0, |
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37 | GL_LIGHT1, |
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38 | GL_LIGHT2, |
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39 | GL_LIGHT3, |
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40 | GL_LIGHT4, |
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41 | GL_LIGHT5, |
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42 | GL_LIGHT6, |
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43 | GL_LIGHT7 |
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44 | }; |
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45 | |
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46 | /** |
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47 | * @param root The XML-element to load the Light from |
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48 | |
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49 | @todo what to do, if no Light-Slots are open anymore ??? |
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50 | */ |
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51 | Light::Light(const TiXmlElement* root) |
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52 | { |
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53 | PRINTF(4)("initializing Light number %d.\n", this->lightNumber); |
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54 | |
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55 | this->lightNumber = LightManager::getInstance()->registerLight(this); |
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56 | |
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57 | this->setClassID(CL_LIGHT, "Light"); |
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58 | char tmpName[10]; |
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59 | sprintf(tmpName, "Light[%d]", this->lightNumber); |
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60 | this->setName(tmpName); |
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61 | |
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62 | // enable The light |
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63 | glEnable(lightsV[this->lightNumber]); // postSpawn |
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64 | |
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65 | // set values (defaults) |
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66 | this->setDiffuseColor(1.0, 1.0, 1.0); |
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67 | this->setSpecularColor(1.0, 1.0, 1.0); |
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68 | |
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69 | if (root != NULL) |
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70 | this->loadParams(root); |
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71 | } |
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72 | |
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73 | /** |
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74 | * destroys a Light |
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75 | */ |
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76 | Light::~Light() |
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77 | { |
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78 | glDisable(lightsV[this->lightNumber]); |
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79 | |
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80 | LightManager::getInstance()->unregisterLight(this); |
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81 | } |
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82 | |
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83 | /** |
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84 | * @param root The XML-element to load the Light from |
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85 | */ |
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86 | void Light::loadParams(const TiXmlElement* root) |
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87 | { |
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88 | static_cast<PNode*>(this)->loadParams(root); |
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89 | |
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90 | LoadParam<Light>(root, "diffuse-color", this, &Light::setDiffuseColor) |
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91 | .describe("sets the diffuse color of the Light (red [0-1], green [0-1], blue [0-1])"); |
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92 | |
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93 | LoadParam<Light>(root, "specular-color", this, &Light::setSpecularColor) |
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94 | .describe("sets the specular color of the Light (red [0-1], green [0-1], blue [0-1])"); |
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95 | |
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96 | LoadParam<Light>(root, "attenuation", this, &Light::setAttenuation) |
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97 | .describe("sets the Attenuation of the LightSource (constant Factor, linear Factor, quadratic Factor)."); |
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98 | |
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99 | LoadParam<Light>(root, "spot-direction", this, &Light::setSpotDirection) |
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100 | .describe("sets the Direction of the Spot"); |
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101 | |
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102 | LoadParam<Light>(root, "spot-cutoff", this, &Light::setSpotCutoff) |
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103 | .describe("the cuttoff of the Spotlight"); |
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104 | } |
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105 | |
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106 | /** |
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107 | * sets an emitting Diffuse color of this Light |
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108 | * @param r red |
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109 | * @param g green |
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110 | * @param b blue |
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111 | */ |
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112 | void Light::setDiffuseColor(GLfloat r, GLfloat g, GLfloat b) |
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113 | { |
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114 | this->diffuseColor[0] = r; |
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115 | this->diffuseColor[1] = g; |
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116 | this->diffuseColor[2] = b; |
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117 | this->diffuseColor[3] = 1.0; |
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118 | |
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119 | glLightfv (lightsV[this->lightNumber], GL_DIFFUSE, this->diffuseColor); |
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120 | } |
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121 | |
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122 | /** |
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123 | * sets an emitting Specular color of this Light |
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124 | * @param r red |
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125 | * @param g green |
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126 | * @param b blue |
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127 | */ |
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128 | void Light::setSpecularColor(GLfloat r, GLfloat g, GLfloat b) |
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129 | { |
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130 | this->specularColor[0] = r; |
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131 | this->specularColor[1] = g; |
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132 | this->specularColor[2] = b; |
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133 | this->specularColor[3] = 1.0; |
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134 | |
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135 | glLightfv (lightsV[this->lightNumber], GL_SPECULAR, this->specularColor); |
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136 | } |
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137 | |
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138 | |
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139 | /** |
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140 | * Sets the AttenuationType of this Light Source |
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141 | * @param constantAttenuation The Constant Attenuation of the Light |
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142 | * @param linearAttenuation The Linear Attenuation of the Light |
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143 | * @param quadraticAttenuation The Quadratic Attenuation of the Light |
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144 | */ |
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145 | void Light::setAttenuation(float constantAttenuation, float linearAttenuation, float quadraticAttenuation) |
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146 | { |
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147 | this->constantAttenuation = constantAttenuation; |
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148 | this->linearAttenuation = linearAttenuation; |
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149 | this->quadraticAttenuation = quadraticAttenuation; |
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150 | |
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151 | glLightf(lightsV[this->lightNumber], GL_CONSTANT_ATTENUATION, constantAttenuation); |
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152 | glLightf(lightsV[this->lightNumber], GL_LINEAR_ATTENUATION, linearAttenuation); |
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153 | glLightf(lightsV[this->lightNumber], GL_QUADRATIC_ATTENUATION, quadraticAttenuation); |
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154 | } |
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155 | |
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156 | |
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157 | /** |
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158 | * stets the direction of the Spot Light. |
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159 | * @param direction The direction of the Spot Light. |
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160 | */ |
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161 | void Light::setSpotDirection(const Vector& direction) |
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162 | { |
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163 | this->spotDirection[0] = direction.x; |
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164 | this->spotDirection[1] = direction.y; |
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165 | this->spotDirection[2] = direction.z; |
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166 | |
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167 | glLightfv(lightsV[this->lightNumber], GL_SPOT_DIRECTION, this->spotDirection); |
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168 | } |
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169 | |
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170 | |
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171 | /** |
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172 | * sets the cutoff angle of the Light. |
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173 | * @param cutoff The cutoff angle. |
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174 | */ |
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175 | void Light::setSpotCutoff(GLfloat cutoff) |
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176 | { |
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177 | this->spotCutoff = cutoff; |
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178 | glLightf(lightsV[this->lightNumber], GL_SPOT_CUTOFF, cutoff); |
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179 | } |
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180 | |
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181 | /** |
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182 | * draws this Light. Being a World-entity the possibility to do this lies at hand. |
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183 | */ |
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184 | void Light::draw() const |
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185 | { |
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186 | float pos[4] = {this->getAbsCoor().x, this->getAbsCoor().y, this->getAbsCoor().z, 1.0}; |
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187 | PRINTF(4)("Drawing The Lights new Position at %f %f %f\n", pos[0], pos[1], pos[2]); |
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188 | glLightfv(lightsV[this->lightNumber], GL_POSITION, pos); |
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189 | } |
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190 | |
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191 | |
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192 | /** |
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193 | * Prints out some nice formated debug information about the Light |
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194 | */ |
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195 | void Light::debug() const |
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196 | { |
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197 | PRINT(0)(":: %d :: -- reference %p\n", this->lightNumber, this); |
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198 | PRINT(0)(" GL-state: "); |
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199 | GLboolean param; |
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200 | glGetBooleanv(lightsV[this->lightNumber], ¶m); |
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201 | if (param) |
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202 | PRINT(0)("ON\n"); |
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203 | else |
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204 | PRINT(0)("OFF\n"); |
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205 | |
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206 | PRINT(0)(" DiffuseColor: %f/%f/%f\n", this->diffuseColor[0], this->diffuseColor[1], this->diffuseColor[2]); |
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207 | PRINT(0)(" SpecularColor: %f/%f/%f\n", this->specularColor[0], this->specularColor[1], this->specularColor[2]); |
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208 | PRINT(0)(" Attenuation: constant=%f linear=%f quadratic=%f\n", this->constantAttenuation, this->linearAttenuation, this->quadraticAttenuation); |
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209 | } |
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210 | |
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211 | |
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212 | /****************** |
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213 | ** LIGHT-MANAGER ** |
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214 | ******************/ |
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215 | /** |
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216 | * standard constructor for a Light |
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217 | */ |
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218 | LightManager::LightManager () |
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219 | { |
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220 | this->setClassID(CL_LIGHT_MANAGER, "LightManager"); |
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221 | |
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222 | glEnable (GL_LIGHTING); |
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223 | this->setAmbientColor(.3, .3, .3); |
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224 | this->lights = new Light*[NUMBEROFLIGHTS]; |
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225 | for (int i = 0; i < NUMBEROFLIGHTS; i++) |
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226 | lights[i] = NULL; |
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227 | this->currentLight = NULL; |
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228 | } |
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229 | |
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230 | /** |
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231 | * standard deconstructor |
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232 | |
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233 | first disables Lighting |
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234 | |
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235 | then deletes the rest of the allocated memory |
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236 | and in the end sets the singleton Reference to zero. |
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237 | */ |
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238 | LightManager::~LightManager () |
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239 | { |
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240 | glDisable(GL_LIGHTING); |
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241 | this->setAmbientColor(.0,.0,.0); |
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242 | |
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243 | for (int i = 0; i < NUMBEROFLIGHTS; i++) |
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244 | if (this->lights[i] != NULL) |
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245 | delete lights[i]; |
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246 | delete[] lights; |
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247 | LightManager::singletonRef = NULL; |
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248 | } |
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249 | |
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250 | /** |
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251 | * singleton-Reference to the Light-class |
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252 | */ |
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253 | LightManager* LightManager::singletonRef = NULL; |
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254 | |
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255 | /** |
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256 | * @param root the XML-element to load the LightManager's settings from |
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257 | */ |
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258 | void LightManager::loadParams(const TiXmlElement* root) |
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259 | { |
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260 | LoadParam<LightManager>(root, "Lights", this, &LightManager::loadLights) |
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261 | .describe("an XML-Element to load lights from."); |
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262 | |
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263 | LoadParam<LightManager>(root, "ambient-color", this, &LightManager::setAmbientColor) |
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264 | .describe("sets the ambient Color of the Environmental Light"); |
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265 | } |
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266 | |
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267 | /** |
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268 | * @param root The XML-element to load Lights from |
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269 | */ |
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270 | void LightManager::loadLights(const TiXmlElement* root) |
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271 | { |
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272 | const TiXmlElement* element = root->FirstChildElement(); |
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273 | |
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274 | while (element != NULL) |
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275 | { |
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276 | Factory::getFirst()->fabricate(element); |
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277 | |
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278 | element = element->NextSiblingElement(); |
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279 | } |
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280 | } |
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281 | |
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282 | // set Attributes |
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283 | /** |
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284 | * sets the ambient Color of the Scene |
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285 | * @param r red |
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286 | * @param g green |
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287 | * @param b blue |
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288 | */ |
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289 | void LightManager::setAmbientColor(GLfloat r, GLfloat g, GLfloat b) |
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290 | { |
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291 | this->ambientColor[0] = r; |
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292 | this->ambientColor[1] = g; |
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293 | this->ambientColor[2] = b; |
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294 | this->ambientColor[3] = 1.0; |
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295 | |
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296 | glLightfv (GL_LIGHT0, GL_AMBIENT, this->ambientColor); |
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297 | } |
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298 | |
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299 | /** |
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300 | * @param light the Light to register to the LightManager |
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301 | |
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302 | This is done explicitely by the constructor of a Light |
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303 | */ |
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304 | int LightManager::registerLight(Light* light) |
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305 | { |
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306 | for (int i = 0; i < NUMBEROFLIGHTS; i++) |
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307 | if (!this->lights[i]) |
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308 | { |
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309 | this->lights[i]=light; |
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310 | return i; |
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311 | } |
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312 | PRINTF(1)("no more light slots availiable. All %d already taken\n", NUMBEROFLIGHTS); |
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313 | return -1; |
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314 | } |
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315 | |
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316 | /** |
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317 | * @param light The light to unregister from the LightManager |
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318 | |
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319 | This is done every time a Light is destroyed explicitely by the Light-destructor |
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320 | */ |
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321 | void LightManager::unregisterLight(Light* light) |
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322 | { |
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323 | for (int i = 0; i < NUMBEROFLIGHTS; i++) |
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324 | { |
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325 | if (this->lights[i] == light) |
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326 | { |
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327 | this->lights[i] = NULL; |
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328 | return; |
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329 | } |
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330 | } |
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331 | PRINTF(2)("Light %p could not be unloaded (this should not heappen\n)"); |
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332 | return; |
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333 | } |
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334 | |
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335 | /** |
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336 | * draws all the Lights in their appropriate position |
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337 | */ |
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338 | void LightManager::draw() const |
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339 | { |
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340 | glMatrixMode(GL_MODELVIEW); |
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341 | glLoadIdentity(); |
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342 | PRINTF(4)("Drawing the Lights\n"); |
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343 | for (int i = 0; i < NUMBEROFLIGHTS; i++) |
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344 | if (this->lights[i]) |
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345 | lights[i]->draw(); |
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346 | } |
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347 | |
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348 | /** |
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349 | * outputs debug information about the Class and its lights |
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350 | */ |
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351 | void LightManager::debug() const |
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352 | { |
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353 | PRINT(0)("=================================\n"); |
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354 | PRINT(0)("= DEBUG INFORMATION CLASS LIGHT =\n"); |
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355 | PRINT(0)("=================================\n"); |
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356 | PRINT(0)("Reference: %p\n", LightManager::singletonRef); |
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357 | if (this->currentLight) |
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358 | PRINT(0)("current Light Nr: %d\n", this->currentLight->getLightNumber()); |
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359 | PRINT(0)("Ambient Color: %f:%f:%f\n", this->ambientColor[0], this->ambientColor[0], this->ambientColor[0]); |
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360 | PRINT(0)("=== Lights ===\n"); |
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361 | for (int i = 0; i < NUMBEROFLIGHTS; i++) |
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362 | if (this->lights[i]) |
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363 | { |
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364 | this->lights[i]->debug(); |
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365 | } |
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366 | PRINT(0)("-----------------------------LM-\n"); |
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367 | } |
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