new window code

panda/src/dxgsg8/dxInput8.cxx

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

panda/src/dxgsg8/dxInput8.h

@@ -0,0 +1,45 @@
+// Filename: dxInput8.h
+// Created by:  blllyjo (07Oct99)
+//
+////////////////////////////////////////////////////////////////////
+//
+// PANDA 3D SOFTWARE
+// Copyright (c) 2001, Disney Enterprises, Inc.  All rights reserved
+//
+// All use of this software is subject to the terms of the Panda 3d
+// Software license.  You should have received a copy of this license
+// along with this source code; you will also find a current copy of
+// the license at http://www.panda3d.org/license.txt .
+//
+// To contact the maintainers of this program write to
+// panda3d@yahoogroups.com .
+//
+////////////////////////////////////////////////////////////////////
+
+#ifndef DXINPUT8_H
+#define DXINPUT8_H
+
+#define DIRECTINPUT_VERSION 0x800
+#include <dinput.h>
+typedef vector<DIDEVICEINSTANCE> DI_DeviceInfos;
+typedef vector<DIDEVICEOBJECTINSTANCE> DI_DeviceObjInfos;
+
+class DInput8Info {
+public:
+ DInput8Info(void);
+ ~DInput8Info(void);
+ bool InitDirectInput(void);
+ bool CreateJoystickOrPad(HWND hWnd);
+ bool ReadJoystick(int devnum, DIJOYSTATE2 &js);
+
+ HINSTANCE _hDInputDLL;
+ UINT_PTR  _JoystickPollTimer;
+ LPDIRECTINPUT8 _pDInput8;
+ DI_DeviceInfos _DevInfos;
+ // arrays for all created devices.  Should probably put these together in a struct,
+ // along with the data fmt info
+ vector<LPDIRECTINPUTDEVICE8> _DeviceList;
+ vector<DIDEVCAPS> _DevCaps;
+};
+
+#endif