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+// Filename: dxInput8.cxx
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+// Created by: angelina jolie (07Oct99)
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+//
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+////////////////////////////////////////////////////////////////////
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+//
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+// PANDA 3D SOFTWARE
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+// Copyright (c) 2001, Disney Enterprises, Inc. All rights reserved
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+//
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+// All use of this software is subject to the terms of the Panda 3d
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+// Software license. You should have received a copy of this license
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+// along with this source code; you will also find a current copy of
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+// the license at http://www.panda3d.org/license.txt .
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+//
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+// To contact the maintainers of this program write to
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+// [email protected] .
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+//
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+////////////////////////////////////////////////////////////////////
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+
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+#include "config_wdxdisplay8.h"
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+#include <dxInput8.h>
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+
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+#define AXIS_RESOLUTION 2000 // use this many levels of resolution by default (could be more if needed and device supported it)
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+#define AXIS_RANGE_CENTERED // if defined, axis range is centered on 0, instead of starting on 0
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+
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+BOOL CALLBACK EnumGameCtrlsCallback( const DIDEVICEINSTANCE* pdidInstance,
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+ VOID* pContext ) {
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+ DI_DeviceInfos *pDevInfos = (DI_DeviceInfos *)pContext;
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+
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+ (*pDevInfos).push_back(*pdidInstance);
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+
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+ if(wdxdisplay_cat.is_debug())
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+ wdxdisplay_cat.debug() << "Found DevType 0x" << (void*)pdidInstance->dwDevType << ": " << pdidInstance->tszInstanceName << ": " << pdidInstance->tszProductName <<endl;
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+
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+ return DIENUM_CONTINUE;
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+}
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+
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+extern BOOL CALLBACK EnumObjectsCallbackJoystick(const DIDEVICEOBJECTINSTANCE* pdidoi,VOID* pContext);
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+
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+DInput8Info::DInput8Info() {
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+ _pDInput8 = NULL;
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+ _hDInputDLL = NULL;
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+ _JoystickPollTimer = NULL;
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+}
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+
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+DInput8Info::~DInput8Info() {
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+ for(UINT i=0;i<_DeviceList.size();i++) {
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+ _DeviceList[i]->Unacquire();
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+ SAFE_RELEASE(_DeviceList[i]);
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+ }
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+
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+ // bugbug: need to handle this
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+ // if(_JoystickPollTimer!=NULL)
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+ // KillTimer(...)
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+
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+ SAFE_RELEASE(_pDInput8);
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+ if(_hDInputDLL) {
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+ FreeLibrary(_hDInputDLL);
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+ _hDInputDLL=NULL;
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+ }
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+}
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+
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+bool DInput8Info::InitDirectInput(void) {
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+ HRESULT hr;
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+
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+ // assumes dx8 exists
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+ // use dynamic load so non-dinput programs dont have to load dinput
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+ #define DLLNAME "dinput8.dll"
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+ #define DINPUTCREATE "DirectInput8Create"
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+
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+ HINSTANCE _hDInputDLL = LoadLibrary(DLLNAME);
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+ if(_hDInputDLL == 0) {
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+ wdxdisplay_cat.fatal() << "LoadLibrary(" << DLLNAME <<") failed!, error=" << GetLastError() << endl;
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+ exit(1);
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+ }
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+
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+ typedef HRESULT (WINAPI * LPDIRECTINPUT8CREATE)(HINSTANCE hinst, DWORD dwVersion, REFIID riidltf, LPVOID *ppvOut, LPUNKNOWN punkOuter);
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+ LPDIRECTINPUT8CREATE pDInputCreate8;
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+
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+ pDInputCreate8 = (LPDIRECTINPUT8CREATE) GetProcAddress(_hDInputDLL,DINPUTCREATE);
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+ if(pDInputCreate8 == NULL) {
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+ wdxdisplay_cat.fatal() << "GetProcAddr failed for " << DINPUTCREATE << endl;
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+ exit(1);
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+ }
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+
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+ // Register with the DirectInput subsystem and get a pointer
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+ // to a IDirectInput interface we can use.
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+ // Create a DInput object
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+ if( FAILED( hr = (*pDInputCreate8)(GetModuleHandle(NULL), DIRECTINPUT_VERSION,
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+ IID_IDirectInput8, (VOID**)&_pDInput8, NULL ) ) ) {
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+ wdxdisplay_cat.error() << DINPUTCREATE << "failed" << D3DERRORSTRING(hr);
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+ return false;
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+ }
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+
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+ // enum all the joysticks,etc (but not keybd/mouse)
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+ if( FAILED( hr = _pDInput8->EnumDevices(DI8DEVCLASS_GAMECTRL,
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+ EnumGameCtrlsCallback,
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+ (LPVOID)&_DevInfos, DIEDFL_ATTACHEDONLY ) ) ) {
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+ wdxdisplay_cat.error() << "EnumDevices failed" << D3DERRORSTRING(hr);
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+ return false;
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+ }
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+
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+ return true;
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+}
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+
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+bool DInput8Info::CreateJoystickOrPad(HWND hWnd) {
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+ bool bFoundDev = false;
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+ UINT devnum=0;
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+ char *errstr=NULL;
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+
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+ // look through the list for the first joystick or gamepad
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+ for(;devnum<_DevInfos.size();devnum++) {
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+ DWORD devType = GET_DIDEVICE_TYPE(_DevInfos[devnum].dwDevType);
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+ if((devType==DI8DEVTYPE_GAMEPAD) ||(devType==DI8DEVTYPE_JOYSTICK)) {
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+ bFoundDev=true;
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+ break;
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+ }
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+ }
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+
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+ if(!bFoundDev) {
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+ wdxdisplay_cat.error() << "Cant find an attached Joystick or GamePad!\n";
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+ return false;
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+ }
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+
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+ LPDIRECTINPUTDEVICE8 pJoyDevice;
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+
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+ // Obtain an interface to the enumerated joystick.
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+ HRESULT hr = _pDInput8->CreateDevice(_DevInfos[devnum].guidInstance, &pJoyDevice, NULL );
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+ if(FAILED(hr)) {
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+ errstr="CreateDevice";
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+ goto handle_error;
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+ }
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+
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+ assert(pJoyDevice!=NULL);
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+ _DeviceList.push_back(pJoyDevice);
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+
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+ // Set the data format to "simple joystick" - a predefined data format
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+ //
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+ // A data format specifies which controls on a device we are interested in,
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+ // and how they should be reported. This tells DInput that we will be
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+ // passing a DIJOYSTATE2 structure to IDirectInputDevice::GetDeviceState().
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+ hr = pJoyDevice->SetDataFormat(&c_dfDIJoystick2);
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+ if(FAILED(hr)) {
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+ errstr="SetDataFormat";
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+ goto handle_error;
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+ }
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+
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+ // must be called AFTER SetDataFormat to get all the proper flags
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+ DX_DECLARE_CLEAN(DIDEVCAPS, DIDevCaps);
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+ hr = pJoyDevice->GetCapabilities(&DIDevCaps);
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+ assert(SUCCEEDED(hr));
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+
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+ _DevCaps.push_back(DIDevCaps);
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+
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+ if(wdxdisplay_cat.is_debug())
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+ wdxdisplay_cat.debug() << "Joy/Pad has " << DIDevCaps.dwAxes << " Axes, " << DIDevCaps.dwButtons << " Buttons, " << DIDevCaps.dwPOVs << " POVs" << endl;
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+
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+ // Set the cooperative level to let DInput know how this device should
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+ // interact with the system and with other DInput applications.
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+ hr = pJoyDevice->SetCooperativeLevel( hWnd, DISCL_EXCLUSIVE | DISCL_FOREGROUND);
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+ if(FAILED(hr)) {
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+ errstr="SetCooperativeLevel";
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+ goto handle_error;
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+ }
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+
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+ // set the min/max values property for discovered axes.
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+ hr = pJoyDevice->EnumObjects(EnumObjectsCallbackJoystick, (LPVOID)pJoyDevice, DIDFT_AXIS);
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+ if(FAILED(hr)) {
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+ errstr="EnumObjects";
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+ goto handle_error;
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+ }
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+
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+ return true;
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+
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+ handle_error:
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+ wdxdisplay_cat.error() << errstr << " failed for (" << _DevInfos[devnum].tszInstanceName << ":" << _DevInfos[devnum].tszProductName << ")" << D3DERRORSTRING(hr);
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+ return false;
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+}
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+
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+//-----------------------------------------------------------------------------
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+// Name: EnumObjectsCallback()
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+// Desc: Callback function for enumerating objects (axes, buttons, POVs) on a
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+// joystick. This function enables user interface elements for objects
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+// that are found to exist, and scales axes min/max values.
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+//-----------------------------------------------------------------------------
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+BOOL CALLBACK EnumObjectsCallbackJoystick( const DIDEVICEOBJECTINSTANCE* pdidoi,
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+ VOID* pContext ) {
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+
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+ LPDIRECTINPUTDEVICE8 pJoyDevice = (LPDIRECTINPUTDEVICE8) pContext;
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+ HRESULT hr;
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+
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+ // For axes that are returned, set the DIPROP_RANGE property for the
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+ // enumerated axis in order to scale min/max values.
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+ if( pdidoi->dwType & DIDFT_AXIS ) {
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+ DIPROPRANGE diprg;
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+ diprg.diph.dwSize = sizeof(DIPROPRANGE);
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+ diprg.diph.dwHeaderSize = sizeof(DIPROPHEADER);
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+ diprg.diph.dwHow = DIPH_BYID;
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+ diprg.diph.dwObj = pdidoi->dwType; // Specify the enumerated axis
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+
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+ #ifdef AXIS_RANGE_CENTERED
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+ diprg.lMin = -AXIS_RESOLUTION/2;
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+ diprg.lMax = +AXIS_RESOLUTION/2;
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+ #else
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+ diprg.lMin = 0;
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+ diprg.lMax = +AXIS_RESOLUTION;
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+ #endif
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+
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+ // Set the range for the axis
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+ hr = pJoyDevice->SetProperty( DIPROP_RANGE, &diprg.diph);
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+ if(FAILED(hr)) {
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+ wdxdisplay_cat.error() << "SetProperty on axis failed" << D3DERRORSTRING(hr);
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+ return DIENUM_STOP;
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+ }
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+ }
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+
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+ return DIENUM_CONTINUE;
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+}
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+
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+bool DInput8Info::ReadJoystick(int devnum, DIJOYSTATE2 &js) {
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+ LPDIRECTINPUTDEVICE8 pJoystick = _DeviceList[devnum];
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+ assert(pJoystick!=NULL);
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+ HRESULT hr;
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+ char *errstr;
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+
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+ // Poll the device to read the current state
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+
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+ hr = pJoystick->Poll();
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+
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+ if( FAILED(hr) ) {
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+ // DInput is telling us that the input stream has been
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+ // interrupted. We aren't tracking any state between polls, so
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+ // we don't have any special reset that needs to be done. We
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+ // just re-acquire and try again.
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+
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+ if((hr==DIERR_NOTACQUIRED)||(hr == DIERR_INPUTLOST)) {
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+ hr = pJoystick->Acquire();
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+
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+ if(FAILED(hr)) {
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+ if(wdxdisplay_cat.is_spam())
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+ wdxdisplay_cat.spam() << "Acquire failed" << D3DERRORSTRING(hr);
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+
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+ // hr may be DIERR_OTHERAPPHASPRIO or other errors. This
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+ // may occur when the app is minimized or in the process of
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+ // switching, so just try again later
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+ return false;
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+ }
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+
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+ hr = pJoystick->Poll();
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+ if(FAILED(hr)) {
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+ // should never happen!
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+ errstr = "Poll after successful Acquire failed";
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+ goto handle_error;
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+ }
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+ } else {
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+ errstr = "Unknown Poll failure";
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+ goto handle_error;
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+ }
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+ }
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+
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+ // should we make a vector of devstate dataformats to generalize this fn for all device types?
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+
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+ // Get the input's device state
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+ hr = pJoystick->GetDeviceState( sizeof(DIJOYSTATE2), &js);
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+ if(FAILED(hr)) {
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+ errstr = "GetDeviceState failed";
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+ goto handle_error;
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+ }
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+
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+ return true;
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+
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+ handle_error:
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+ wdxdisplay_cat.fatal() << errstr << D3DERRORSTRING(hr);
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+ return false;
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+}
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+
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+
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cxgeorge