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Diffstat (limited to 'src/app/joystick.cpp')
| -rw-r--r-- | src/app/joystick.cpp | 245 |
1 files changed, 245 insertions, 0 deletions
diff --git a/src/app/joystick.cpp b/src/app/joystick.cpp new file mode 100644 index 0000000..609a1fb --- /dev/null +++ b/src/app/joystick.cpp @@ -0,0 +1,245 @@ +// * This file is part of the COLOBOT source code
+// * Copyright (C) 2001-2008, Daniel ROUX & EPSITEC SA, www.epsitec.ch
+// *
+// * This program is free software: you can redistribute it and/or modify
+// * it under the terms of the GNU General Public License as published by
+// * the Free Software Foundation, either version 3 of the License, or
+// * (at your option) any later version.
+// *
+// * This program is distributed in the hope that it will be useful,
+// * but WITHOUT ANY WARRANTY; without even the implied warranty of
+// * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+// * GNU General Public License for more details.
+// *
+// * You should have received a copy of the GNU General Public License
+// * along with this program. If not, see http://www.gnu.org/licenses/.
+
+// joystick.cpp
+
+#define STRICT
+#define DIRECTINPUT_VERSION 0x0700
+
+#include <windows.h>
+#include <dinput.h>
+#include <stdio.h>
+
+#include "joystick.h"
+
+
+
+
+// Global variables.
+
+LPDIRECTINPUT7 g_pDI = NULL;
+LPDIRECTINPUTDEVICE2 g_pJoystick = NULL;
+DIDEVCAPS g_diDevCaps;
+
+
+
+
+
+// Called once for each enumerated joystick. If we find one, create a
+// device interface on it so we can play with it.
+
+BOOL CALLBACK EnumJoysticksCallback( const DIDEVICEINSTANCE* pdidInstance,
+ VOID* pContext )
+{
+ HRESULT hr;
+
+ // Obtain an interface to the enumerated joystick.
+ hr = g_pDI->CreateDeviceEx( pdidInstance->guidInstance, IID_IDirectInputDevice2,
+ (VOID**)&g_pJoystick, NULL );
+
+ // If it failed, then we can't use this joystick. (Maybe the user unplugged
+ // it while we were in the middle of enumerating it.)
+ if( FAILED(hr) )
+ return DIENUM_CONTINUE;
+
+
+ // Stop enumeration. Note: we're just taking the first joystick we get. You
+ // could store all the enumerated joysticks and let the user pick.
+ return DIENUM_STOP;
+}
+
+
+// Callback function for enumerating the axes on a joystick.
+
+BOOL CALLBACK EnumAxesCallback( const DIDEVICEOBJECTINSTANCE* pdidoi,
+ VOID* pContext )
+{
+ DIPROPRANGE diprg;
+ diprg.diph.dwSize = sizeof(DIPROPRANGE);
+ diprg.diph.dwHeaderSize = sizeof(DIPROPHEADER);
+ diprg.diph.dwHow = DIPH_BYOFFSET;
+ diprg.diph.dwObj = pdidoi->dwOfs; // Specify the enumerated axis
+ diprg.lMin = -1000;
+ diprg.lMax = +1000;
+
+ // Set the range for the axis
+ if( FAILED( g_pJoystick->SetProperty( DIPROP_RANGE, &diprg.diph ) ) )
+ return DIENUM_STOP;
+
+#ifndef __MINGW32__ // FIXME Doesn't work under MinGW
+ // Set the UI to reflect what axes the joystick supports
+ switch( pdidoi->dwOfs )
+ {
+ case DIJOFS_X:
+ OutputDebugString("EnumAxesCallback -x\n");
+ break;
+ case DIJOFS_Y:
+ OutputDebugString("EnumAxesCallback -y\n");
+ break;
+ case DIJOFS_Z:
+ OutputDebugString("EnumAxesCallback -z\n");
+ break;
+ case DIJOFS_RX:
+ OutputDebugString("EnumAxesCallback -rx\n");
+ break;
+ case DIJOFS_RY:
+ OutputDebugString("EnumAxesCallback -ry\n");
+ break;
+ case DIJOFS_RZ:
+ OutputDebugString("EnumAxesCallback -rz\n");
+ break;
+ case DIJOFS_SLIDER(0):
+ OutputDebugString("EnumAxesCallback -s0\n");
+ break;
+ case DIJOFS_SLIDER(1):
+ OutputDebugString("EnumAxesCallback -s1\n");
+ break;
+ }
+#endif
+
+ return DIENUM_CONTINUE;
+}
+
+
+// Initialize the DirectInput variables.
+
+BOOL InitDirectInput(HINSTANCE hInst, HWND hWnd)
+{
+ HRESULT hr;
+
+ // Register with the DirectInput subsystem and get a pointer
+ // to a IDirectInput interface we can use.
+#ifndef __MINGW32__ // FIXME Doesn't work under MinGW
+ hr = DirectInputCreateEx( hInst, DIRECTINPUT_VERSION,IID_IDirectInput7, (LPVOID*)&g_pDI, NULL );
+ if( FAILED(hr) ) return FALSE;
+#else
+ return FALSE;
+#endif
+
+ // Look for a simple joystick we can use for this sample program.
+ hr = g_pDI->EnumDevices( DIDEVTYPE_JOYSTICK, EnumJoysticksCallback,
+ NULL, DIEDFL_ATTACHEDONLY );
+ if( FAILED(hr) ) return FALSE;
+
+ // Make sure we got a joystick
+ if( NULL == g_pJoystick )
+ {
+//? MessageBox( NULL, "Joystick not found", "DInput Sample",
+//? MB_ICONERROR | MB_OK );
+ return FALSE;
+ }
+
+ // 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 DIJOYSTATE structure to IDirectInputDevice::GetDeviceState().
+ hr = g_pJoystick->SetDataFormat( &c_dfDIJoystick );
+ if( FAILED(hr) ) return FALSE;
+
+ // Set the cooperative level to let DInput know how this device should
+ // interact with the system and with other DInput applications.
+ hr = g_pJoystick->SetCooperativeLevel( hWnd, DISCL_EXCLUSIVE|DISCL_FOREGROUND );
+ if( FAILED(hr) ) return FALSE;
+
+ // Determine how many axis the joystick has (so we don't error out setting
+ // properties for unavailable axis)
+ g_diDevCaps.dwSize = sizeof(DIDEVCAPS);
+ hr = g_pJoystick->GetCapabilities(&g_diDevCaps);
+ if( FAILED(hr) ) return FALSE;
+
+
+ // Enumerate the axes of the joyctick and set the range of each axis. Note:
+ // we could just use the defaults, but we're just trying to show an example
+ // of enumerating device objects (axes, buttons, etc.).
+ g_pJoystick->EnumObjects( EnumAxesCallback, (VOID*)g_pJoystick, DIDFT_AXIS );
+
+ return TRUE;
+}
+
+// Acquire or unacquire the keyboard, depending on if the app is active
+// Input device must be acquired before the GetDeviceState is called.
+
+BOOL SetAcquire(BOOL bActive)
+{
+ if ( g_pJoystick )
+ {
+ if( bActive ) g_pJoystick->Acquire();
+ else g_pJoystick->Unacquire();
+ }
+ return TRUE;
+}
+
+
+// Get the input device's state and display it.
+
+BOOL UpdateInputState( DIJOYSTATE &js )
+{
+ HRESULT hr;
+
+ if ( g_pJoystick )
+ {
+ do
+ {
+ // Poll the device to read the current state
+ hr = g_pJoystick->Poll();
+ if ( FAILED(hr) ) return FALSE;
+
+ // Get the input's device state
+ hr = g_pJoystick->GetDeviceState( sizeof(DIJOYSTATE), &js );
+
+ if( hr == DIERR_INPUTLOST )
+ {
+ // 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.
+ hr = g_pJoystick->Acquire();
+ if ( FAILED(hr) ) return FALSE;
+ }
+ }
+ while ( DIERR_INPUTLOST == hr );
+ if ( FAILED(hr) ) return FALSE;
+ }
+ return TRUE;
+}
+
+
+// Initialize the DirectInput variables.
+
+BOOL FreeDirectInput()
+{
+ // Unacquire and release any DirectInputDevice objects.
+ if( NULL != g_pJoystick )
+ {
+ // Unacquire the device one last time just in case
+ // the app tried to exit while the device is still acquired.
+ g_pJoystick->Unacquire();
+ g_pJoystick->Release();
+ g_pJoystick = NULL;
+ }
+
+
+ // Release any DirectInput objects.
+ if( g_pDI )
+ {
+ g_pDI->Release();
+ g_pDI = NULL;
+ }
+
+ return TRUE;
+}
+
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