Adds support for SDL joystick and game controllers.

Engine/source/platformSDL/sdlInputManager.h

@@ -0,0 +1,114 @@
+//-----------------------------------------------------------------------------
+// Copyright (c) 2012 GarageGames, LLC
+//
+// Permission is hereby granted, free of charge, to any person obtaining a copy
+// of this software and associated documentation files (the "Software"), to
+// deal in the Software without restriction, including without limitation the
+// rights to use, copy, modify, merge, publish, distribute, sublicense, and/or
+// sell copies of the Software, and to permit persons to whom the Software is
+// furnished to do so, subject to the following conditions:
+//
+// The above copyright notice and this permission notice shall be included in
+// all copies or substantial portions of the Software.
+//
+// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+// IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+// FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+// AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+// LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
+// FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS
+// IN THE SOFTWARE.
+//-----------------------------------------------------------------------------
+
+#ifndef _SDLINPUTMANAGER_H_
+#define _SDLINPUTMANAGER_H_
+
+#ifndef _PLATFORMINPUT_H_
+#include "platform/platformInput.h"
+#endif
+#include "SDL.h"
+
+//------------------------------------------------------------------------------
+class SDLInputManager : public InputManager
+{
+   enum Constants {
+      MaxJoysticks = 4,          // Up to 4 simultaneous joysticks
+      MaxControllers = 4,        // Up to 4 simultaneous controllers
+      MaxHats = 2,               // Maximum 2 hats per device
+      MaxBalls = 2,              // Maximum 2 trackballs per device
+      MaxControllerAxes = 7,     // From map_StringForControllerAxis[] in SDL_gamecontroller.c
+      MaxControllerButtons = 16  // From map_StringForControllerButton[] in SDL_gamecontroller.c
+   };
+
+   struct controllerState
+   {
+      S32 sdlInstID;    // SDL device instance id
+      U32 torqueInstID; // Torque device instance id
+      SDL_GameController *inputDevice;
+   };
+
+   struct joystickState
+   {
+      S32 sdlInstID;    // SDL device instance id
+      U32 torqueInstID; // Torque device instance id
+      SDL_Joystick *inputDevice;
+      U32 numAxes;
+      U8 lastHatState[MaxHats];
+
+      void reset();
+   };
+
+private:
+   typedef InputManager Parent;
+
+   static S32 map_EventForControllerAxis[MaxControllerAxes];
+   static S32 map_EventForControllerButton[MaxControllerButtons];
+
+   static bool smJoystickEnabled;
+   static bool smJoystickSplitAxesLR;
+   static bool smControllerEnabled;
+   static bool smPOVButtonEvents;
+   static bool smPOVMaskEvents;
+
+   joystickState mJoysticks[MaxJoysticks];
+   controllerState mControllers[MaxControllers];
+
+   // Used to look up a torque instance based on a device inst
+   HashTable<S32, joystickState*> mJoystickMap;
+   HashTable<S32, controllerState*> mControllerMap;
+
+   bool mJoystickActive;
+
+   void deviceConnectedCallback(S32 index);
+   bool closeControllerByIndex(S32 index);
+   void closeController(SDL_JoystickID sdlId);
+   bool closeJoystickByIndex(S32 index);
+   void closeJoystick(SDL_JoystickID sdlId);
+
+   void buildInputEvent(U32 deviceType, U32 deviceInst, InputEventType objType, InputObjectInstances objInst, InputActionType action, S32 iValue);
+   void buildInputEvent(U32 deviceType, U32 deviceInst, InputEventType objType, InputObjectInstances objInst, InputActionType action, F32 fValue);
+   void buildHatEvents(U32 deviceType, U32 deviceInst, U8 lastState, U8 currentState, S32 hatIndex);
+
+public:
+   DECLARE_STATIC_CLASS(SDLInputManager);
+
+public:
+   SDLInputManager();
+
+   bool enable();
+   void disable();
+   void process();
+
+   void processEvent(SDL_Event &evt);
+
+   static void init();
+
+   // Console interface:
+   S32 openJoystick(S32 sdlIndex, S32 requestedTID);
+   S32 openController(S32 sdlIndex, S32 requestedTID);
+   void closeDevice(S32 sdlIndex);
+   S32 getJoystickOpenState(S32 sdlIndex);
+   void getJoystickTorqueInst(S32 sdlIndex, char* instBuffer);
+};
+
+#endif  // _SDLINPUTMANAGER_H_