1 | #ifndef _OGREODEBODY_H_ |
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2 | #define _OGREODEBODY_H_ |
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3 | |
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4 | #include "OgreOdePreReqs.h" |
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5 | #include <OgreUserDefinedObject.h> |
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6 | #include <OgreMovableObject.h> |
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7 | #include <OgreAxisAlignedBox.h> |
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8 | #include <OgreSceneQuery.h> |
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9 | #include <OgreSceneNode.h> |
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10 | |
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11 | namespace OgreOde |
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12 | { |
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13 | //----------------------------------------------------------------------- |
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14 | class _OgreOdeExport BodyState |
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15 | { |
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16 | public: |
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17 | BodyState(){}; |
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18 | BodyState(const Ogre::Vector3 &position, |
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19 | const Ogre::Quaternion &orientation); |
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20 | |
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21 | void operator=(const BodyState &other); |
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22 | bool operator==(const BodyState &other) const; |
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23 | bool operator!=(const BodyState &other) const; |
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24 | |
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25 | //----------------------------------------------------------------------- |
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26 | /// compare with another physics state for "significant" differences. |
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27 | /// used for detecting position or orientation snaps which need smoothing. |
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28 | bool isDifferent(const BodyState &other, const Ogre::Real threshold = Ogre::Real(0.01)) const; |
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29 | |
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30 | void interpolate(const BodyState * const _previous_state, |
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31 | const BodyState * const _current_state, |
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32 | const Ogre::Real alpha); |
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33 | |
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34 | Ogre::Vector3 _position; |
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35 | Ogre::Quaternion _orientation; |
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36 | }; |
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37 | |
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38 | //----------------------------------------------------------------------- |
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39 | template <class T> |
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40 | class _OgreOdeExport CircularBuffer |
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41 | { |
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42 | public: |
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43 | |
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44 | CircularBuffer() : |
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45 | head (0), |
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46 | tail (0) |
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47 | { |
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48 | } |
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49 | |
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50 | void resize(const size_t size) |
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51 | { |
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52 | head = 0; |
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53 | tail = 0; |
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54 | buffers.resize(size); |
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55 | } |
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56 | |
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57 | size_t size() |
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58 | { |
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59 | int count = (int)head - (int)tail; |
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60 | if (count<0) |
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61 | count += (int) buffers.size(); |
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62 | return (size_t) count; |
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63 | } |
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64 | |
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65 | void add(const T &buffer) |
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66 | { |
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67 | buffers[head] = buffer; |
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68 | next(head); |
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69 | |
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70 | } |
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71 | |
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72 | void remove() |
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73 | { |
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74 | assert(!empty()); |
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75 | next(tail); |
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76 | } |
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77 | |
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78 | T& oldest() |
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79 | { |
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80 | assert(!empty()); |
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81 | return buffers[tail]; |
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82 | } |
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83 | |
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84 | T& newest() |
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85 | { |
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86 | assert(!empty()); |
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87 | int index = (int)head - 1; |
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88 | if (index == -1) |
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89 | index = (int) buffers.size() - 1; |
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90 | return buffers[index]; |
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91 | } |
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92 | |
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93 | T& almostNewest() |
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94 | { |
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95 | assert(buffers.size() > 1); |
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96 | int index = (int)head - 2; |
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97 | if (index == -1) |
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98 | index = (int) buffers.size() - 1; |
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99 | return buffers[index]; |
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100 | } |
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101 | |
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102 | bool empty() const |
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103 | { |
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104 | return head == tail; |
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105 | } |
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106 | |
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107 | void next(size_t &index) |
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108 | { |
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109 | if (index == (size_t)buffers.size()) |
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110 | index -= (size_t)buffers.size(); |
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111 | else |
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112 | index ++; |
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113 | } |
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114 | |
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115 | void previous(size_t &index) |
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116 | { |
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117 | if ((int)index - 1 < 0) |
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118 | index += (size_t)buffers.size(); |
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119 | else |
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120 | index --; |
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121 | } |
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122 | |
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123 | T& operator[](size_t index) |
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124 | { |
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125 | assert(index<(size_t)buffers.size()); |
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126 | return buffers[index]; |
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127 | } |
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128 | |
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129 | public: |
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130 | |
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131 | size_t head; |
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132 | size_t tail; |
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133 | |
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134 | private: |
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135 | std::vector<T> buffers; |
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136 | }; |
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137 | /** |
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138 | This object is the class defining a for all Dynamically physical objects in OgreOde. |
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139 | @remarks |
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140 | This object is tied attached to a scene node, |
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141 | or/and tied a Entity Object using UserDefinedObject |
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142 | @remarks |
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143 | It extends the OGRE UserDefinedObject to allow reverse links from Ogre::Entity. |
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144 | It extends the OGRE MovableObject to allow scene node attachment. |
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145 | */ |
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146 | class _OgreOdeExport Body : public Ogre::MovableObject, public Ogre::UserDefinedObject |
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147 | { |
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148 | friend class Joint; |
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149 | friend class World; |
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150 | friend class Geometry; |
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151 | |
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152 | public: |
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153 | Body(World *world, const Ogre::String& name = Ogre::StringUtil::BLANK); |
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154 | virtual ~Body(); |
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155 | |
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156 | static const Ogre::String MovableType; |
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157 | |
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158 | void _historyResize(const size_t size); |
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159 | inline void updateParentNode(); |
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160 | inline void updatePreviousState(); |
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161 | inline void updateCurrentState(); |
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162 | inline void updateDrawState (); |
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163 | inline void interpolateDrawState(const Ogre::Real alpha); |
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164 | inline void synchronise(); |
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165 | |
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166 | void deriveLocation(); |
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167 | |
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168 | void setPosition(const Ogre::Vector3& position); |
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169 | void setOrientation(const Ogre::Quaternion& orientation); |
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170 | void setLinearVelocity(const Ogre::Vector3& linear_velocity); |
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171 | void setAngularVelocity(const Ogre::Vector3& angular_velocity); |
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172 | |
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173 | inline const Ogre::Vector3& getPosition() const; |
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174 | |
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175 | inline const Ogre::Quaternion& getOrientation() const; |
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176 | inline void updatePosition(BodyState * const bodystate); |
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177 | inline void updateOrientation(BodyState * const bodystate); |
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178 | |
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179 | const Ogre::Vector3& getLinearVelocity(); |
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180 | const Ogre::Vector3& getAngularVelocity(); |
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181 | |
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182 | virtual const Ogre::String& getMovableType() const; |
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183 | virtual void _notifyAttached(Ogre::Node* parent,bool isTagPoint = false); |
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184 | virtual const Ogre::String& getName(void) const; |
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185 | virtual void _notifyCurrentCamera(Ogre::Camera* camera); |
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186 | virtual const Ogre::AxisAlignedBox& getBoundingBox(void) const; |
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187 | virtual Ogre::Real getBoundingRadius(void) const; |
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188 | virtual void _updateRenderQueue(Ogre::RenderQueue* queue); |
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189 | #if OGRE_VERSION >= ((1 << 16) | (5 << 8)) |
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190 | virtual void visitRenderables(Ogre::Renderable::Visitor* visitor, bool debugRenderables = false){} |
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191 | #endif |
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192 | void setMass(const Mass& mass); |
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193 | const Mass& getMass(); |
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194 | |
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195 | void addForce(const Ogre::Vector3& force); |
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196 | void addTorque(const Ogre::Vector3& torque); |
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197 | void addRelativeForce(const Ogre::Vector3& force); |
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198 | void addRelativeTorque(const Ogre::Vector3& torque); |
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199 | void addForceAt(const Ogre::Vector3& force,const Ogre::Vector3& position); |
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200 | void addForceAtRelative(const Ogre::Vector3& force,const Ogre::Vector3& position); |
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201 | void addRelativeForceAt(const Ogre::Vector3& force,const Ogre::Vector3& position); |
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202 | void addRelativeForceAtRelative(const Ogre::Vector3& force,const Ogre::Vector3& position); |
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203 | |
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204 | const Ogre::Vector3& getForce(); |
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205 | const Ogre::Vector3& getTorque(); |
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206 | void setForce(const Ogre::Vector3&); |
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207 | void setTorque(const Ogre::Vector3&); |
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208 | |
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209 | |
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210 | Ogre::Vector3 getPointWorldPosition(const Ogre::Vector3& position); |
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211 | Ogre::Vector3 getPointWorldVelocity(const Ogre::Vector3& position); |
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212 | Ogre::Vector3 getPointVelocity(const Ogre::Vector3& position); |
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213 | Ogre::Vector3 getPointBodyPosition(const Ogre::Vector3& position); |
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214 | Ogre::Vector3 getVectorToWorld(const Ogre::Vector3& vector); |
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215 | Ogre::Vector3 getVectorFromWorld(const Ogre::Vector3& vector); |
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216 | |
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217 | void wake(); |
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218 | void sleep(); |
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219 | inline bool isAwake() const; |
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220 | void setAutoSleep(bool auto_sleep); |
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221 | bool getAutoSleep(); |
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222 | void setAutoSleepLinearThreshold(Ogre::Real linear_threshold); |
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223 | Ogre::Real getAutoSleepLinearThreshold(); |
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224 | void setAutoSleepAngularThreshold(Ogre::Real angular_threshold); |
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225 | Ogre::Real getAutoSleepAngularThreshold(); |
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226 | void setAutoSleepSteps(int steps); |
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227 | int getAutoSleepSteps(); |
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228 | void setAutoSleepTime(Ogre::Real time); |
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229 | Ogre::Real getAutoSleepTime(); |
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230 | void setAutoSleepDefaults(); |
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231 | |
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232 | void setFiniteRotationMode(bool on); |
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233 | bool getFiniteRotationMode(); |
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234 | void setFiniteRotationAxis(const Ogre::Vector3& axis); |
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235 | const Ogre::Vector3& getFiniteRotationAxis(); |
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236 | |
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237 | int getJointCount(); |
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238 | Joint* getJoint(int index); |
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239 | |
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240 | void setModifyParentOrientation(bool bModify); |
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241 | |
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242 | void addGeometry(Geometry *g); |
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243 | void removeGeometry(Geometry *g); |
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244 | size_t getGeometryCount(); |
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245 | Geometry* getGeometry(int index); |
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246 | GeometryArray* getGeometries(); |
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247 | |
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248 | void setAffectedByGravity(bool on); |
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249 | bool getAffectedByGravity(); |
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250 | |
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251 | void setDamping(Ogre::Real linear_damping, Ogre::Real angular_damping); |
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252 | void setLinearDamping(Ogre::Real linear_damping); |
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253 | void setAngularDamping(Ogre::Real angular_damping); |
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254 | Ogre::Real getLinearDamping(); |
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255 | Ogre::Real getAngularDamping(); |
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256 | |
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257 | void setUserData(size_t user_data); |
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258 | size_t getUserData(); |
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259 | |
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260 | virtual size_t getID(); |
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261 | virtual void setDebug(const bool debug); |
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262 | |
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263 | /** Return a string identifying the type of user defined object. |
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264 | @remarks |
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265 | Used to differentiate between different Bodies, Geometries and prefab_object |
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266 | */ |
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267 | const Ogre::String& getTypeName(void) const |
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268 | {static Ogre::String sName("Body");return sName;}; |
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269 | |
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270 | bool collide(void* data, Geometry *g); |
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271 | bool collide(void* data, Body *b); |
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272 | bool collidePlaneBounds(void* data, Ogre::SceneQuery::WorldFragment *); |
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273 | |
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274 | protected: |
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275 | dBodyID getBodyID() const; |
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276 | |
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277 | void destroyDebugNode(); |
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278 | void addDebugNode(Ogre::Node* node); |
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279 | |
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280 | void recursiveSetMode(Ogre::SceneNode* node); |
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281 | |
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282 | void applyDamping(); |
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283 | |
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284 | protected: |
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285 | dBodyID _body; |
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286 | Ogre::String _name; |
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287 | Ogre::Node* _debug_node; |
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288 | |
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289 | static int _body_count; |
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290 | |
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291 | Ogre::Vector3 _linear_vel; |
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292 | Ogre::Vector3 _angular_vel; |
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293 | Ogre::Vector3 _finite_axis; |
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294 | Ogre::Vector3 _force; |
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295 | Ogre::Vector3 _torque; |
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296 | Ogre::AxisAlignedBox _bounding_box; |
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297 | Mass* _mass; |
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298 | |
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299 | bool _is_damped; |
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300 | bool _is_linear_damped; |
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301 | dReal _linear_damping; |
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302 | bool _is_angular_damped; |
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303 | dReal _angular_damping; |
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304 | |
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305 | size_t _user_data; |
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306 | |
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307 | // Major members |
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308 | bool _isEnabled; |
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309 | bool _modify_parent_orientation; |
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310 | |
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311 | BodyState _draw_state; |
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312 | CircularBuffer<BodyState *> _state_history; |
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313 | |
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314 | /// Collision proxies, must be set up if collision enabled |
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315 | GeometryArray _geometries; |
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316 | |
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317 | World *_world; |
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318 | |
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319 | }; |
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320 | |
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321 | //----------------------------------------------------------------------- |
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322 | inline bool Body::isAwake() const { return _isEnabled; } |
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323 | //----------------------------------------------------------------------- |
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324 | inline void Body::updateParentNode() |
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325 | { |
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326 | if (mParentNode) |
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327 | { |
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328 | mParentNode->setPosition(_draw_state._position); |
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329 | mParentNode->setOrientation(_draw_state._orientation); |
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330 | } |
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331 | |
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332 | if (_debug_node) |
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333 | { |
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334 | _debug_node->setPosition(_draw_state._position); |
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335 | _debug_node->setOrientation(_draw_state._orientation); |
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336 | |
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337 | recursiveSetMode(static_cast<Ogre::SceneNode*>(_debug_node)); |
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338 | } |
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339 | } |
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340 | //----------------------------------------------------------------------- |
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341 | inline void Body::updatePreviousState() |
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342 | { |
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343 | _isEnabled = dBodyIsEnabled(_body) || _debug_node; |
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344 | if (_isEnabled) |
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345 | { |
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346 | BodyState *previous = _state_history.almostNewest (); |
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347 | updatePosition (previous); |
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348 | updateOrientation (previous); |
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349 | } |
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350 | } |
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351 | //----------------------------------------------------------------------- |
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352 | inline void Body::updateCurrentState() |
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353 | { |
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354 | _isEnabled = dBodyIsEnabled(_body) || _debug_node; |
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355 | if (_isEnabled) |
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356 | { |
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357 | BodyState *current = _state_history.newest (); |
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358 | updatePosition(current); |
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359 | updateOrientation(current); |
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360 | } |
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361 | } |
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362 | //----------------------------------------------------------------------- |
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363 | inline void Body::updateDrawState () |
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364 | { |
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365 | _isEnabled = dBodyIsEnabled(_body) || _debug_node; |
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366 | if (_isEnabled) |
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367 | { |
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368 | updatePosition(&_draw_state); |
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369 | updateOrientation(&_draw_state); |
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370 | } |
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371 | } |
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372 | //----------------------------------------------------------------------- |
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373 | inline void Body::interpolateDrawState(const Ogre::Real alpha) |
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374 | { |
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375 | if (_isEnabled) |
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376 | { |
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377 | BodyState *current = _state_history.newest (); |
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378 | BodyState *previous = _state_history.almostNewest (); |
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379 | assert (current != previous); |
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380 | _draw_state.interpolate (previous, current, alpha); |
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381 | } |
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382 | } |
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383 | //----------------------------------------------------------------------- |
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384 | inline void Body::synchronise() |
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385 | { |
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386 | if (_isEnabled) |
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387 | { |
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388 | if (_is_damped) |
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389 | applyDamping(); |
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390 | updateParentNode(); |
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391 | } |
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392 | } |
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393 | //----------------------------------------------------------------------- |
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394 | inline const Ogre::Vector3& Body::getPosition() const |
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395 | { |
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396 | return _draw_state._position; |
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397 | } |
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398 | //----------------------------------------------------------------------- |
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399 | inline const Ogre::Quaternion& Body::getOrientation() const |
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400 | { |
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401 | return _draw_state._orientation; |
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402 | } |
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403 | //----------------------------------------------------------------------- |
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404 | inline void Body::updatePosition(BodyState * const bodystate) |
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405 | { |
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406 | const dReal * const position = dBodyGetPosition(_body); |
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407 | |
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408 | bodystate->_position.x = (Ogre::Real)position[0]; |
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409 | bodystate->_position.y = (Ogre::Real)position[1]; |
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410 | bodystate->_position.z = (Ogre::Real)position[2]; |
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411 | } |
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412 | //----------------------------------------------------------------------- |
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413 | inline void Body::updateOrientation(BodyState * const bodystate) |
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414 | { |
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415 | const dReal * const orientation = dBodyGetQuaternion(_body); |
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416 | bodystate->_orientation.w = (Ogre::Real)orientation[0]; |
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417 | bodystate->_orientation.x = (Ogre::Real)orientation[1]; |
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418 | bodystate->_orientation.y = (Ogre::Real)orientation[2]; |
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419 | bodystate->_orientation.z = (Ogre::Real)orientation[3]; |
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420 | } |
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421 | //----------------------------------------------------------------------- |
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422 | } |
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423 | |
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424 | #endif |
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425 | |
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