[1919] | 1 | #ifndef _OGREODESTEPPER_H_ |
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| 2 | #define _OGREODESTEPPER_H_ |
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| 3 | |
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| 4 | #include "OgreOdePreReqs.h" |
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| 5 | |
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[1923] | 6 | #include <OgreFrameListener.h> |
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| 7 | #include "OgreOdeWorld.h" |
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| 8 | |
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[1919] | 9 | namespace OgreOde |
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| 10 | { |
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| 11 | //------------------------------------------------------------------------------------------------ |
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| 12 | class _OgreOdeExport StepMode |
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| 13 | { |
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| 14 | public: |
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| 15 | StepMode(World *world) : _world(world){}; |
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| 16 | virtual ~StepMode(){}; |
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| 17 | |
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| 18 | virtual void step(const Ogre::Real time) = 0; |
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| 19 | |
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| 20 | protected: |
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| 21 | World* _world; |
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| 22 | }; |
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| 23 | //------------------------------------------------------------------------------------------------ |
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| 24 | class _OgreOdeExport BasicStepMode : public StepMode |
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| 25 | { |
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| 26 | public: |
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| 27 | BasicStepMode(World *world) : StepMode(world) {}; |
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| 28 | virtual ~BasicStepMode(){}; |
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| 29 | |
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| 30 | inline void step(const Ogre::Real time){ dWorldStep(_world->getWorldID(), (dReal)time);}; |
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| 31 | }; |
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| 32 | //------------------------------------------------------------------------------------------------ |
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| 33 | class _OgreOdeExport QuickStepMode : public StepMode |
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| 34 | { |
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| 35 | public: |
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| 36 | QuickStepMode(World *world) : StepMode(world) {}; |
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| 37 | virtual ~QuickStepMode(){}; |
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| 38 | |
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| 39 | inline void step(const Ogre::Real time){ dWorldQuickStep(_world->getWorldID(), (dReal)time);}; |
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| 40 | }; |
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| 41 | //------------------------------------------------------------------------------------------------ |
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| 42 | class _OgreOdeExport FastStepMode : public StepMode |
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| 43 | { |
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| 44 | public: |
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| 45 | FastStepMode(World *world, int max_iteration = 40) : StepMode(world), _max_iteration(max_iteration) {}; |
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| 46 | virtual ~FastStepMode(){}; |
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| 47 | |
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| 48 | inline void step(const Ogre::Real time){ dWorldStepFast1(_world->getWorldID(), (dReal)time, _max_iteration);}; |
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| 49 | private: |
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| 50 | int _max_iteration; |
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| 51 | }; |
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| 52 | //------------------------------------------------------------------------------------------------ |
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| 53 | class _OgreOdeExport StepListener |
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| 54 | { |
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| 55 | public: |
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| 56 | StepListener(){}; |
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| 57 | virtual ~StepListener(){}; |
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| 58 | |
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| 59 | virtual bool preStep(Ogre::Real time) { return true; }; |
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| 60 | virtual bool postStep(Ogre::Real time) { return true; }; |
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| 61 | virtual bool middleStep(Ogre::Real time) { return true; }; |
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| 62 | }; |
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| 63 | //------------------------------------------------------------------------------------------------ |
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| 64 | class _OgreOdeExport StepHandler:public Ogre::FrameListener |
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| 65 | { |
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| 66 | public: |
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| 67 | enum AutoMode |
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| 68 | { |
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| 69 | AutoMode_NotAutomatic, |
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| 70 | AutoMode_PreFrame, |
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| 71 | AutoMode_PostFrame |
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| 72 | }; |
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| 73 | enum StepModeType |
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| 74 | { |
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| 75 | BasicStep = 0, |
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| 76 | QuickStep, |
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| 77 | FastStep, |
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| 78 | StepModeTypeCount |
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| 79 | }; |
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| 80 | |
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| 81 | public: |
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| 82 | StepHandler(World *world, |
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| 83 | StepModeType stepModeType = QuickStep, |
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| 84 | const Ogre::Real step_size = Ogre::Real (0.01), |
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| 85 | const Ogre::Real max_interval = Ogre::Real(1.0 / 4), |
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| 86 | const Ogre::Real time_scale = Ogre::Real(1.0)); |
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| 87 | virtual ~StepHandler(); |
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| 88 | |
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| 89 | virtual bool step(const Ogre::Real time); |
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| 90 | |
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| 91 | Ogre::Real getStepSize() const {return _step_size;} |
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| 92 | void setStepSize (const Ogre::Real step_size){_step_size = step_size;} |
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| 93 | |
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| 94 | void pause(bool pause); |
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| 95 | bool isPaused(); |
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| 96 | |
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| 97 | void setStepListener(StepListener* listener); |
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| 98 | void setAutomatic(StepHandler::AutoMode mode, Ogre::Root* root = 0); |
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| 99 | |
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| 100 | bool frameStarted(const Ogre::FrameEvent& evt); |
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| 101 | bool frameEnded(const Ogre::FrameEvent& evt); |
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| 102 | |
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| 103 | protected: |
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| 104 | bool isRunning(const Ogre::Real time); |
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| 105 | bool prepareSteppingTime(const Ogre::Real time); |
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| 106 | bool basicStep(const Ogre::Real time); |
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| 107 | |
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| 108 | protected: |
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| 109 | World* _world; |
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| 110 | bool _paused,_auto_pre,_auto_post; |
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| 111 | StepListener* _listener; |
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| 112 | Ogre::Root* _root; |
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| 113 | Ogre::Real _step_size; |
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| 114 | Ogre::Real _total_time; |
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| 115 | Ogre::Real _max_interval; |
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| 116 | Ogre::Real _time_scale; |
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| 117 | |
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| 118 | StepMode *_current_stepper; |
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| 119 | }; |
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| 120 | |
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| 121 | //------------------------------------------------------------------------------------------------ |
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| 122 | class _OgreOdeExport ForwardFixedStepHandler:public StepHandler |
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| 123 | { |
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| 124 | public: |
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| 125 | ForwardFixedStepHandler(World *world, |
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| 126 | StepModeType stepModeType = QuickStep, |
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| 127 | const Ogre::Real step_size = Ogre::Real (0.01), |
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| 128 | const Ogre::Real max_interval = Ogre::Real(1.0 / 4), |
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| 129 | const Ogre::Real time_scale = Ogre::Real(1.0)); |
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| 130 | virtual ~ForwardFixedStepHandler(); |
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| 131 | |
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| 132 | virtual bool step(const Ogre::Real time); |
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| 133 | }; |
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| 134 | //------------------------------------------------------------------------------------------------ |
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| 135 | class _OgreOdeExport ExactVariableStepHandler:public StepHandler |
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| 136 | { |
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| 137 | public: |
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| 138 | ExactVariableStepHandler(World *world , |
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| 139 | StepModeType stepModeType = QuickStep, |
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| 140 | const Ogre::Real step_size = Ogre::Real (0.01), |
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| 141 | const Ogre::Real max_interval = Ogre::Real(1.0 / 4), |
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| 142 | const Ogre::Real time_scale = Ogre::Real(1.0)); |
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| 143 | virtual ~ExactVariableStepHandler(); |
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| 144 | |
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| 145 | virtual bool step(const Ogre::Real time); |
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| 146 | }; |
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| 147 | //------------------------------------------------------------------------------------------------ |
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| 148 | // Fix your timestep Gaffer implementation. |
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| 149 | // http://www.gaffer.org/articles/Timestep.html |
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| 150 | // Gaffer :"If you implement this interpolation technique you ensure that there will |
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| 151 | // not be any visual stuttering when your display and physics framerates |
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| 152 | // are out of sync. It will also perfectly handle the undersampling case so |
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| 153 | // your objects will move smoothly when you view your simulation in slow |
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| 154 | // motion or ten years from now on that Sexium." |
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| 155 | class _OgreOdeExport ForwardFixedInterpolatedStepHandler :public StepHandler |
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| 156 | { |
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| 157 | public: |
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| 158 | ForwardFixedInterpolatedStepHandler(World *world, |
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| 159 | StepModeType stepModeType = QuickStep, |
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| 160 | const Ogre::Real step_size = Ogre::Real (0.01), |
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| 161 | const Ogre::Real frame_rate = Ogre::Real (1.0 / 60), |
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| 162 | const Ogre::Real max_interval = Ogre::Real(1.0 / 4), |
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| 163 | const Ogre::Real time_scale = Ogre::Real(1.0)); |
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| 164 | virtual ~ForwardFixedInterpolatedStepHandler(); |
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| 165 | |
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| 166 | virtual bool step(const Ogre::Real time); |
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| 167 | private : |
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| 168 | Ogre::Real _dbl_step_size; |
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| 169 | Ogre::Real _inv_step_size; |
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| 170 | |
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| 171 | Ogre::Real _next_total_time; |
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| 172 | unsigned int _next_frame_step_count; |
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| 173 | Ogre::Real _inv_next_total_time; |
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| 174 | bool _fixed_frame_rate; |
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| 175 | Ogre::Real _frame_rate; |
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| 176 | }; |
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| 177 | |
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| 178 | } |
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| 179 | |
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| 180 | #endif |
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