Er2
1 year ago
37 changed files with 591 additions and 136 deletions
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@@ -0,0 +1,370 @@
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//========= Copyright Valve Corporation, All rights reserved. ============//
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//
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// Purpose: PC Joystick implementation for inputsystem.dll
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//
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//===========================================================================//
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/* For force feedback testing. */ |
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#include "inputsystem.h" |
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#include "tier1/convar.h" |
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#include "tier0/icommandline.h" |
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//-----------------------------------------------------------------------------
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// Joystick helpers
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//-----------------------------------------------------------------------------
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#define JOY_POVFWDRIGHT ( ( JOY_POVFORWARD + JOY_POVRIGHT ) >> 1 ) // 4500
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#define JOY_POVRIGHTBACK ( ( JOY_POVRIGHT + JOY_POVBACKWARD ) >> 1 ) // 13500
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#define JOY_POVFBACKLEFT ( ( JOY_POVBACKWARD + JOY_POVLEFT ) >> 1 ) // 22500
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#define JOY_POVLEFTFWD ( ( JOY_POVLEFT + JOY_POVFORWARD ) >> 1 ) // 31500
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ConVar joy_wwhack1( "joy_wingmanwarrior_centerhack", "0", FCVAR_ARCHIVE, "Wingman warrior centering hack." ); |
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ConVar joy_axisbutton_threshold( "joy_axisbutton_threshold", "0.3", FCVAR_ARCHIVE, "Analog axis range before a button press is registered." ); |
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//-----------------------------------------------------------------------------
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// Initialize all joysticks
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//-----------------------------------------------------------------------------
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void CInputSystem::InitializeJoysticks( void ) |
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{ |
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// assume no joystick
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m_nJoystickCount = 0; |
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// abort startup if user requests no joystick
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if ( CommandLine()->FindParm("-nojoy" ) ) |
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return; |
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// verify joystick driver is present
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int nMaxJoysticks = joyGetNumDevs(); |
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if ( nMaxJoysticks > MAX_JOYSTICKS ) |
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{ |
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nMaxJoysticks = MAX_JOYSTICKS; |
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} |
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else if ( nMaxJoysticks <= 0 ) |
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{ |
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DevMsg( 1, "joystick not found -- driver not present\n"); |
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return; |
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} |
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// cycle through the joysticks looking for valid ones
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MMRESULT mmr; |
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for ( int i=0; i < nMaxJoysticks; i++ ) |
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{ |
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JOYINFOEX ji; |
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Q_memset( &ji, 0, sizeof( ji ) ); |
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ji.dwSize = sizeof(ji); |
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ji.dwFlags = JOY_RETURNCENTERED; |
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mmr = joyGetPosEx( i, &ji ); |
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if ( mmr != JOYERR_NOERROR ) |
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continue; |
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// get the capabilities of the selected joystick
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// abort startup if command fails
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JOYCAPS jc; |
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Q_memset( &jc, 0, sizeof( jc ) ); |
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mmr = joyGetDevCaps( i, &jc, sizeof( jc ) ); |
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if ( mmr != JOYERR_NOERROR ) |
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continue; |
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JoystickInfo_t &info = m_pJoystickInfo[m_nJoystickCount]; |
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info.m_nDeviceId = i; |
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info.m_JoyInfoEx = ji; |
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info.m_nButtonCount = (int)jc.wNumButtons; |
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info.m_bHasPOVControl = ( jc.wCaps & JOYCAPS_HASPOV ) ? true : false; |
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info.m_bDiagonalPOVControlEnabled = false; |
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info.m_nFlags = JOY_RETURNCENTERED | JOY_RETURNBUTTONS | JOY_RETURNX | JOY_RETURNY; |
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info.m_nAxisFlags = 0; |
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if ( jc.wNumAxes >= 2 ) |
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{ |
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info.m_nAxisFlags |= 0x3; |
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} |
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if ( info.m_bHasPOVControl ) |
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{ |
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info.m_nFlags |= JOY_RETURNPOV; |
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} |
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if ( jc.wCaps & JOYCAPS_HASZ ) |
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{ |
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info.m_nFlags |= JOY_RETURNZ; |
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info.m_nAxisFlags |= 0x4; |
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} |
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if ( jc.wCaps & JOYCAPS_HASR ) |
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{ |
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info.m_nFlags |= JOY_RETURNR; |
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info.m_nAxisFlags |= 0x8; |
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} |
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if ( jc.wCaps & JOYCAPS_HASU ) |
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{ |
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info.m_nFlags |= JOY_RETURNU; |
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info.m_nAxisFlags |= 0x10; |
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} |
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if ( jc.wCaps & JOYCAPS_HASV ) |
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{ |
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info.m_nFlags |= JOY_RETURNV; |
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info.m_nAxisFlags |= 0x20; |
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} |
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info.m_nLastPolledButtons = 0; |
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info.m_nLastPolledAxisButtons = 0; |
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info.m_nLastPolledPOVState = 0; |
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memset( info.m_pLastPolledAxes, 0, sizeof(info.m_pLastPolledAxes) ); |
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++m_nJoystickCount; |
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EnableJoystickInput( i, true ); |
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} |
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} |
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void CInputSystem::ShutdownJoysticks() |
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{ |
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} |
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//-----------------------------------------------------------------------------
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// Process the event
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//-----------------------------------------------------------------------------
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void CInputSystem::JoystickButtonEvent( ButtonCode_t button, int sample ) |
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{ |
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// package the key
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if ( sample ) |
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{ |
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PostButtonPressedEvent( IE_ButtonPressed, m_nLastSampleTick, button, button ); |
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} |
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else |
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{ |
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PostButtonReleasedEvent( IE_ButtonReleased, m_nLastSampleTick, button, button ); |
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} |
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} |
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//-----------------------------------------------------------------------------
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// Update the joystick button state
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//-----------------------------------------------------------------------------
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void CInputSystem::UpdateJoystickButtonState( int nJoystick ) |
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{ |
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JoystickInfo_t &info = m_pJoystickInfo[nJoystick]; |
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JOYINFOEX& ji = info.m_JoyInfoEx; |
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// Standard joystick buttons
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unsigned int buttons = ji.dwButtons ^ info.m_nLastPolledButtons; |
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if ( buttons ) |
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{ |
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for ( int j = 0 ; j < info.m_nButtonCount ; ++j ) |
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{ |
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int mask = buttons & ( 1 << j ); |
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if ( !mask ) |
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continue; |
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ButtonCode_t code = (ButtonCode_t)JOYSTICK_BUTTON( nJoystick, j ); |
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if ( mask & ji.dwButtons ) |
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{ |
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// down event
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JoystickButtonEvent( code, MAX_BUTTONSAMPLE ); |
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} |
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else |
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{ |
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// up event
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JoystickButtonEvent( code, 0 ); |
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} |
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} |
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info.m_nLastPolledButtons = (unsigned int)ji.dwButtons; |
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} |
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// Analog axis buttons
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const float minValue = joy_axisbutton_threshold.GetFloat() * MAX_BUTTONSAMPLE; |
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for ( int j = 0 ; j < MAX_JOYSTICK_AXES; ++j ) |
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{ |
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if ( ( info.m_nAxisFlags & (1 << j) ) == 0 ) |
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continue; |
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// Positive side of the axis
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int mask = ( 1 << (j << 1) ); |
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ButtonCode_t code = JOYSTICK_AXIS_BUTTON( nJoystick, (j << 1) ); |
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float value = GetAnalogValue( JOYSTICK_AXIS( nJoystick, j ) ); |
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if ( value > minValue && !(info.m_nLastPolledAxisButtons & mask) ) |
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{ |
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info.m_nLastPolledAxisButtons |= mask; |
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JoystickButtonEvent( code, MAX_BUTTONSAMPLE ); |
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} |
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if ( value <= minValue && (info.m_nLastPolledAxisButtons & mask) ) |
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{ |
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info.m_nLastPolledAxisButtons &= ~mask; |
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JoystickButtonEvent( code, 0 ); |
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} |
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// Negative side of the axis
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mask <<= 1; |
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code = (ButtonCode_t)( code + 1 ); |
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if ( value < -minValue && !(info.m_nLastPolledAxisButtons & mask) ) |
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{ |
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info.m_nLastPolledAxisButtons |= mask; |
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JoystickButtonEvent( code, MAX_BUTTONSAMPLE ); |
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} |
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if ( value >= -minValue && (info.m_nLastPolledAxisButtons & mask) ) |
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{ |
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info.m_nLastPolledAxisButtons &= ~mask; |
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JoystickButtonEvent( code, 0 ); |
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} |
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} |
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} |
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//-----------------------------------------------------------------------------
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// Purpose: Get raw joystick sample along axis
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//-----------------------------------------------------------------------------
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unsigned int CInputSystem::AxisValue( JoystickAxis_t axis, JOYINFOEX& ji ) |
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{ |
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switch (axis) |
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{ |
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case JOY_AXIS_X: |
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return (unsigned int)ji.dwXpos; |
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case JOY_AXIS_Y: |
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return (unsigned int)ji.dwYpos; |
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case JOY_AXIS_Z: |
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return (unsigned int)ji.dwZpos; |
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case JOY_AXIS_R: |
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return (unsigned int)ji.dwRpos; |
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case JOY_AXIS_U: |
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return (unsigned int)ji.dwUpos; |
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case JOY_AXIS_V: |
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return (unsigned int)ji.dwVpos; |
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} |
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// FIX: need to do some kind of error
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return (unsigned int)ji.dwXpos; |
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} |
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//-----------------------------------------------------------------------------
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// Update the joystick POV control
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//-----------------------------------------------------------------------------
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void CInputSystem::UpdateJoystickPOVControl( int nJoystick ) |
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{ |
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JoystickInfo_t &info = m_pJoystickInfo[nJoystick]; |
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JOYINFOEX& ji = info.m_JoyInfoEx; |
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if ( !info.m_bHasPOVControl ) |
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return; |
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// convert POV information into 4 bits of state information
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// this avoids any potential problems related to moving from one
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// direction to another without going through the center position
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unsigned int povstate = 0; |
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if ( ji.dwPOV != JOY_POVCENTERED ) |
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{ |
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if (ji.dwPOV == JOY_POVFORWARD) // 0
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{ |
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povstate |= 0x01; |
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} |
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if (ji.dwPOV == JOY_POVRIGHT) // 9000
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{ |
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povstate |= 0x02; |
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} |
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if (ji.dwPOV == JOY_POVBACKWARD) // 18000
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{ |
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povstate |= 0x04; |
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} |
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if (ji.dwPOV == JOY_POVLEFT) // 27000
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{ |
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povstate |= 0x08; |
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} |
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// Deal with diagonals if user wants them
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if ( info.m_bDiagonalPOVControlEnabled ) |
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{ |
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if (ji.dwPOV == JOY_POVFWDRIGHT) // 4500
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{ |
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povstate |= ( 0x01 | 0x02 ); |
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} |
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if (ji.dwPOV == JOY_POVRIGHTBACK) // 13500
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{ |
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povstate |= ( 0x02 | 0x04 ); |
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} |
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if (ji.dwPOV == JOY_POVFBACKLEFT) // 22500
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{ |
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povstate |= ( 0x04 | 0x08 ); |
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} |
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if (ji.dwPOV == JOY_POVLEFTFWD) // 31500
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{ |
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povstate |= ( 0x08 | 0x01 ); |
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} |
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} |
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} |
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// determine which bits have changed and key an auxillary event for each change
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unsigned int buttons = povstate ^ info.m_nLastPolledPOVState; |
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if ( buttons ) |
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{ |
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for ( int i = 0; i < JOYSTICK_POV_BUTTON_COUNT; ++i ) |
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{ |
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unsigned int mask = buttons & ( 1 << i ); |
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if ( !mask ) |
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continue; |
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ButtonCode_t code = (ButtonCode_t)JOYSTICK_POV_BUTTON( nJoystick, i ); |
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if ( mask & povstate ) |
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{ |
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// Keydown on POV buttons
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JoystickButtonEvent( code, MAX_BUTTONSAMPLE ); |
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} |
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else |
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{ |
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// KeyUp on POV buttons
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JoystickButtonEvent( code, 0 ); |
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} |
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} |
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// Latch old values
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info.m_nLastPolledPOVState = povstate; |
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} |
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} |
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//-----------------------------------------------------------------------------
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// Purpose: Sample the joystick
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//-----------------------------------------------------------------------------
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void CInputSystem::PollJoystick( void ) |
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{ |
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if ( !m_JoysticksEnabled.IsAnyFlagSet() ) |
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return; |
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InputState_t &state = m_InputState[ m_bIsPolling ]; |
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for ( int i = 0; i < m_nJoystickCount; ++i ) |
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{ |
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if ( !m_JoysticksEnabled.IsFlagSet( 1 << i ) ) |
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continue; |
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JoystickInfo_t &info = m_pJoystickInfo[i]; |
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JOYINFOEX& ji = info.m_JoyInfoEx; |
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Q_memset( &ji, 0, sizeof( ji ) ); |
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ji.dwSize = sizeof( ji ); |
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ji.dwFlags = (DWORD)info.m_nFlags; |
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if ( joyGetPosEx( info.m_nDeviceId, &ji ) != JOYERR_NOERROR ) |
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continue; |
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// This hack fixes a bug in the Logitech WingMan Warrior DirectInput Driver
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// rather than having 32768 be the zero point, they have the zero point at 32668
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// go figure -- anyway, now we get the full resolution out of the device
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if ( joy_wwhack1.GetBool() ) |
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{ |
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ji.dwUpos += 100; |
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} |
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// Poll joystick axes
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for ( int j = 0; j < MAX_JOYSTICK_AXES; ++j ) |
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{ |
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if ( ( info.m_nAxisFlags & ( 1 << j ) ) == 0 ) |
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continue; |
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AnalogCode_t code = JOYSTICK_AXIS( i, j ); |
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int nValue = AxisValue( (JoystickAxis_t)j, ji ) - MAX_BUTTONSAMPLE; |
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state.m_pAnalogDelta[ code ] = nValue - state.m_pAnalogValue[ code ]; |
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state.m_pAnalogValue[ code ] = nValue; |
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if ( state.m_pAnalogDelta[ code ] != 0 ) |
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{ |
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PostEvent( IE_AnalogValueChanged, m_nLastSampleTick, code, state.m_pAnalogValue[ code ], state.m_pAnalogDelta[ code ] ); |
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} |
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} |
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UpdateJoystickButtonState( i ); |
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UpdateJoystickPOVControl( i ); |
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} |
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} |
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