1 /* 2 The zlib/libpng License 3 4 Copyright (c) 2005-2007 Phillip Castaneda (pjcast -- www.wreckedgames.com) 5 6 This software is provided 'as-is', without any express or implied warranty. In no event will 7 the authors be held liable for any damages arising from the use of this software. 8 9 Permission is granted to anyone to use this software for any purpose, including commercial 10 applications, and to alter it and redistribute it freely, subject to the following 11 restrictions: 12 13 1. The origin of this software must not be misrepresented; you must not claim that 14 you wrote the original software. If you use this software in a product, 15 an acknowledgment in the product documentation would be appreciated but is 16 not required. 17 18 2. Altered source versions must be plainly marked as such, and must not be 19 misrepresented as being the original software. 20 21 3. This notice may not be removed or altered from any source distribution. 22 */ 23 #ifndef OIS_Joystick_H 24 #define OIS_Joystick_H 25 #include "OISObject.h" 26 #include "OISEvents.h" 27 28 namespace OIS 29 { 30 /** @remarks default sensitivity for vector3 component of joystick */ 31 #define OIS_JOYSTICK_VECTOR3_DEFAULT 2.28f 32 33 //! POV / HAT Joystick component 34 class _OISExport Pov : public Component 35 { 36 public: 37 Pov() : Component(OIS_POV), direction(0) {} 38 39 static const int Centered = 0x00000000; 40 static const int North = 0x00000001; 41 static const int South = 0x00000010; 42 static const int East = 0x00000100; 43 static const int West = 0x00001000; 44 static const int NorthEast = 0x00000101; 45 static const int SouthEast = 0x00000110; 46 static const int NorthWest = 0x00001001; 47 static const int SouthWest = 0x00001010; 48 49 int direction; 50 }; 51 52 //! A sliding axis - only used in Win32 Right Now 53 class _OISExport Slider : public Component 54 { 55 public: 56 Slider() : Component(OIS_Slider), abX(0), abY(0) {}; 57 //! true if pushed, false otherwise 58 int abX, abY; 59 }; 60 61 /** 62 Represents the state of the joystick 63 All members are valid for both buffered and non buffered mode 64 Sticks with zero values are not present on the device 65 */ 66 class _OISExport JoyStickState 67 { 68 public: 69 //! Constructor 70 JoyStickState() { clear(); } 71 72 //! Represents all the buttons (uses a bitset) 73 std::vector<bool> mButtons; 74 75 //! Represents all the single axes on the device 76 std::vector<Axis> mAxes; 77 78 //! Represents the value of a POV. Maximum of 4 79 Pov mPOV[4]; 80 81 //! Represent the max sliders 82 Slider mSliders[4]; 83 84 //! Represents all Vector type controls the device exports 85 std::vector<Vector3> mVectors; 86 87 //! internal method to reset all variables to initial values 88 void clear() 89 { 90 for( std::vector<bool>::iterator i = mButtons.begin(), e = mButtons.end(); i != e; ++i ) 91 { 92 (*i) = false; 93 } 94 95 for( std::vector<Axis>::iterator i = mAxes.begin(), e = mAxes.end(); i != e; ++i ) 96 { 97 i->absOnly = true; //Currently, joysticks only report Absolute values 98 i->clear(); 99 } 100 101 for( std::vector<Vector3>::iterator i = mVectors.begin(), e = mVectors.end(); i != e; ++i ) 102 { 103 i->clear(); 104 } 105 106 for( int i = 0; i < 4; ++i ) 107 { 108 mPOV[i].direction = Pov::Centered; 109 mSliders[i].abX = mSliders[i].abY = 0; 110 } 111 } 112 }; 113 114 /** Specialised for joystick events */ 115 class _OISExport JoyStickEvent : public EventArg 116 { 117 public: 118 JoyStickEvent( Object* obj, const JoyStickState &st ) : EventArg(obj), state(st) {} 119 virtual ~JoyStickEvent() {} 120 121 const JoyStickState &state; 122 }; 123 124 /** 125 To recieve buffered joystick input, derive a class from this, and implement the 126 methods here. Then set the call back to your JoyStick instance with JoyStick::setEventCallback 127 Each JoyStick instance can use the same callback class, as a devID number will be provided 128 to differentiate between connected joysticks. Of course, each can have a seperate 129 callback instead. 130 */ 131 class _OISExport JoyStickListener 132 { 133 public: 134 virtual ~JoyStickListener() {} 135 /** @remarks Joystick button down event */ 136 virtual bool buttonPressed( const JoyStickEvent &arg, int button ) = 0; 137 138 /** @remarks Joystick button up event */ 139 virtual bool buttonReleased( const JoyStickEvent &arg, int button ) = 0; 140 141 /** @remarks Joystick axis moved event */ 142 virtual bool axisMoved( const JoyStickEvent &arg, int axis ) = 0; 143 144 //-- Not so common control events, so are not required --// 145 //! Joystick Event, and sliderID 146 virtual bool sliderMoved( const JoyStickEvent &, int index) {return true;} 147 148 //! Joystick Event, and povID 149 virtual bool povMoved( const JoyStickEvent &arg, int index) {return true;} 150 151 //! Joystick Event, and Vector3ID 152 virtual bool vector3Moved( const JoyStickEvent &arg, int index) {return true;} 153 }; 154 155 /** 156 Joystick base class. To be implemented by specific system (ie. DirectX joystick) 157 This class is useful as you remain OS independent using this common interface. 158 */ 159 class _OISExport JoyStick : public Object 160 { 161 public: 162 virtual ~JoyStick() {} 163 164 /** 165 @remarks 166 Returns the number of requested components 167 @param cType 168 The ComponentType you are interested in knowing about 169 */ 170 int getNumberOfComponents(ComponentType cType) const; 171 172 /** 173 @remarks 174 Sets a cutoff limit for changes in the Vector3 component for movement to 175 be ignored. Helps reduce much event traffic for frequent small/sensitive 176 changes 177 @param degrees 178 The degree under which Vector3 events should be discarded 179 */ 180 void setVector3Sensitivity(float degrees = OIS_JOYSTICK_VECTOR3_DEFAULT); 181 182 /** 183 @remarks 184 Returns the sensitivity cutoff for Vector3 Component 185 */ 186 float getVector3Sensitivity() const; 187 188 /** 189 @remarks 190 Register/unregister a JoyStick Listener - Only one allowed for simplicity. If broadcasting 191 is neccessary, just broadcast from the callback you registered. 192 @param joyListener 193 Send a pointer to a class derived from JoyStickListener or 0 to clear the callback 194 */ 195 virtual void setEventCallback( JoyStickListener *joyListener ); 196 197 /** @remarks Returns currently set callback.. or null */ 198 JoyStickListener* getEventCallback() const; 199 200 /** @remarks Returns the state of the joystick - is valid for both buffered and non buffered mode */ 201 const JoyStickState& getJoyStickState() const { return mState; } 202 203 //! The minimal axis value 204 static const int MIN_AXIS = -32768; 205 206 //! The maximum axis value 207 static const int MAX_AXIS = 32767; 208 209 protected: 210 JoyStick(const std::string &vendor, bool buffered, int devID, InputManager* creator); 211 212 //! Number of sliders 213 int mSliders; 214 215 //! Number of POVs 216 int mPOVs; 217 218 //! The JoyStickState structure (contains all component values) 219 JoyStickState mState; 220 221 //! The callback listener 222 JoyStickListener *mListener; 223 224 //! Adjustment factor for orientation vector accuracy 225 float mVector3Sensitivity; 226 }; 227 } 228 #endif 229
