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force.c
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force.c
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#include <stdio.h>
#include "typedefs.h"
#include "dinput.h"
#include "controls.h"
#include "force.h"
#include "xmem.h"
#undef DEBUG_FF_DYNAMIC
typedef struct _FeedbackEffect
{
FF_EffectType type;
DWORD update;
int playing;
LPDIRECTINPUTEFFECT lpEffect;
DIEFFECT effect;
union
{
DICONSTANTFORCE constant;
DIRAMPFORCE ramp;
DIPERIODIC periodic;
DICONDITION condition[ MAX_JOYSTICK_AXIS ];
};
DIENVELOPE envelope;
DWORD axes[ MAX_JOYSTICK_AXIS ];
LONG direction[ MAX_JOYSTICK_AXIS ];
} FeedbackEffect;
extern void DebugPrintf( const char * format, ... );
extern BOOL IsEqualGuid(GUID *lpguid1, GUID *lpguid2);
extern JOYSTICKINFO JoystickInfo[MAX_JOYSTICKS];
extern LPDIRECTINPUTDEVICE2 lpdiJoystick[MAX_JOYSTICKS];
extern DIDEVCAPS diJoystickCaps[MAX_JOYSTICKS];
extern int Num_Joysticks;
static FeedbackEffect FB_Effect[ MAX_JOYSTICKS ][ FF_EFFECT_MAX ];
static FF_EffectClass effect_class[ FF_TYPE_MAX ];
static GUID effect_guid[ FF_TYPE_MAX ];
static char *effect_name[ FF_EFFECT_MAX ];
static char *effect_type[ FF_TYPE_MAX ];
static DWORD effect_class_mask[ FF_CLASS_MAX ] =
{
DIEFT_CONSTANTFORCE,
DIEFT_RAMPFORCE,
DIEFT_PERIODIC,
DIEFT_CONDITION,
DIEFT_CUSTOMFORCE
};
#define INIT_EFFECT_TYPE( eclass, etype, guid ) effect_class[ etype ] = eclass, effect_guid[ etype ] = guid, effect_type[ etype ] = #etype
#define INIT_EFFECT_NAME( id, name ) effect_name[ id ] = name
#define JOYSTICK_COMMAND( JOYSTICK, COMMAND )\
(\
err = (COMMAND),\
err = ( ( ( err == DIERR_INPUTLOST ) ||\
( err == DIERR_NOTEXCLUSIVEACQUIRED ) ) &&\
SUCCEEDED( IDirectInputDevice2_Acquire( lpdiJoystick[ (JOYSTICK) ] ) ) )\
? (COMMAND) : err\
)
static char *FF_ErrorMsg( HRESULT err )
{
static char buf[ 80 ];
switch( err )
{
case DI_BUFFEROVERFLOW:
// case DI_NOEFFECT:
// case DI_NOTATTACHED:
// case DI_PROPNOEFFECT:
return "DI_BUFFEROVERFLOW/DI_NOEFFECT/DI_NOTATTACHED/DI_PROPNOEFFECT";
case DI_DOWNLOADSKIPPED:
return "DI_DOWNLOADSKIPPED";
case DI_EFFECTRESTARTED:
return "DI_EFFECTRESTARTED";
case DI_OK:
return "DI_OK";
case DI_POLLEDDEVICE:
return "DI_POLLEDDEVICE";
case DI_TRUNCATED:
return "DI_TRUNCATED";
case DI_TRUNCATEDANDRESTARTED:
return "DI_TRUNCATEDANDRESTARTED";
case DIERR_ACQUIRED:
return "DIERR_ACQUIRED";
case DIERR_ALREADYINITIALIZED:
return "DIERR_ALREADYINITIALIZED";
case DIERR_BADDRIVERVER:
return "DIERR_BADDRIVERVER";
case DIERR_BETADIRECTINPUTVERSION:
return "DIERR_BETADIRECTINPUTVERSION";
case DIERR_DEVICEFULL:
return "DIERR_DEVICEFULL";
case DIERR_DEVICENOTREG:
return "DIERR_DEVICENOTREG";
case DIERR_EFFECTPLAYING:
return "DIERR_EFFECTPLAYING";
case DIERR_HASEFFECTS:
return "DIERR_HASEFFECTS";
case DIERR_GENERIC:
return "DIERR_GENERIC";
case DIERR_HANDLEEXISTS:
// case DIERR_OTHERAPPHASPRIO:
// case DIERR_READONLY:
return "DIERR_HANDLEEXISTS/DIERR_OTHERAPPHASPRIO/DIERR_READONLY";
case DIERR_INCOMPLETEEFFECT:
return "DIERR_INCOMPLETEEFFECT";
case DIERR_INPUTLOST:
return "DIERR_INPUTLOST";
case DIERR_INVALIDPARAM:
return "DIERR_INVALIDPARAM";
case DIERR_NOAGGREGATION:
return "DIERR_NOAGGREGATION";
case DIERR_NOINTERFACE:
return "DIERR_NOINTERFACE";
case DIERR_NOTACQUIRED:
return "DIERR_NOTACQUIRED";
case DIERR_NOTBUFFERED:
return "DIERR_NOTBUFFERED";
case DIERR_NOTDOWNLOADED:
return "DIERR_NOTDOWNLOADED";
case DIERR_NOTEXCLUSIVEACQUIRED:
return "DIERR_NOTEXCLUSIVEACQUIRED";
case DIERR_NOTFOUND:
return "DIERR_NOTFOUND";
case DIERR_NOTINITIALIZED:
return "DIERR_NOTINITIALIZED";
// case DIERR_OBJECTNOTFOUND:
return "DIERR_OBJECTNOTFOUND";
case DIERR_OLDDIRECTINPUTVERSION:
return "DIERR_OLDDIRECTINPUTVERSION";
case DIERR_OUTOFMEMORY:
return "DIERR_OUTOFMEMORY";
case DIERR_UNSUPPORTED:
return "DIERR_UNSUPPORTED";
case DIERR_MOREDATA:
return "DIERR_MOREDATA";
// case DIERR_DEVICENOTREG:
return "DIERR_DEVICENOTREG";
case E_PENDING:
return "E_PENDING";
default:
sprintf( buf, "<unknown = 0x%08X>", (int) err );
return buf;
}
}
BOOL CALLBACK FF_EnumEffect( LPCDIEFFECTINFO pdei, LPVOID pvRef )
{
GUID CompareGUID;
int j, e;
j = (int) pvRef;
CompareGUID = pdei->guid;
for ( e = 0; e < FF_TYPE_MAX; e++ )
{
if ( IsEqualGuid( &CompareGUID, &effect_guid[ e ] ) )
{
JoystickInfo[ j ].feedback->effect_info[ e ] = *pdei;
JoystickInfo[ j ].feedback->effect_setting[ e ].enable = 1;
JoystickInfo[ j ].feedback->effect_setting[ e ].gain = MAX_GAIN;
break;
}
}
{
DebugPrintf( "Joystick %s supports%s force feedback effect %s\n",
JoystickInfo[ j ].Name,
( e < FF_TYPE_MAX ) ? "*" : "",
pdei->tszName );
if ( pdei->dwEffType & DIEFT_CONDITION )
DebugPrintf( " DIEFT_CONDITION\n" );
if ( pdei->dwEffType & DIEFT_CONSTANTFORCE )
DebugPrintf( " DIEFT_CONSTANTFORCE\n" );
if ( pdei->dwEffType & DIEFT_CUSTOMFORCE )
DebugPrintf( " DIEFT_CUSTOMFORCE\n" );
if ( pdei->dwEffType & DIEFT_DEADBAND )
DebugPrintf( " DIEFT_DEADBAND\n" );
if ( pdei->dwEffType & DIEFT_FFATTACK )
DebugPrintf( " DIEFT_FFATTACK\n" );
if ( pdei->dwEffType & DIEFT_FFFADE )
DebugPrintf( " DIEFT_FFFADE\n" );
if ( pdei->dwEffType & DIEFT_HARDWARE )
DebugPrintf( " DIEFT_HARDWARE\n" );
if ( pdei->dwEffType & DIEFT_PERIODIC )
DebugPrintf( " DIEFT_PERIODIC\n" );
if ( pdei->dwEffType & DIEFT_POSNEGCOEFFICIENTS )
DebugPrintf( " DIEFT_POSNEGCOEFFICIENTS\n" );
if ( pdei->dwEffType & DIEFT_POSNEGSATURATION )
DebugPrintf( " DIEFT_POSNEGSATURATION\n" );
if ( pdei->dwEffType & DIEFT_RAMPFORCE )
DebugPrintf( " DIEFT_RAMPFORCE\n" );
if ( pdei->dwEffType & DIEFT_SATURATION )
DebugPrintf( " DIEFT_SATURATION\n" );
if ( pdei->dwStaticParams & DIEP_AXES )
DebugPrintf( " Static DIEP_AXES\n" );
if ( pdei->dwStaticParams & DIEP_DIRECTION )
DebugPrintf( " Static DIEP_DIRECTION\n" );
if ( pdei->dwStaticParams & DIEP_DURATION )
DebugPrintf( " Static DIEP_DURATION\n" );
if ( pdei->dwStaticParams & DIEP_ENVELOPE )
DebugPrintf( " Static DIEP_ENVELOPE\n" );
if ( pdei->dwStaticParams & DIEP_GAIN )
DebugPrintf( " Static DIEP_GAIN\n" );
if ( pdei->dwStaticParams & DIEP_SAMPLEPERIOD )
DebugPrintf( " Static DIEP_SAMPLEPERIOD\n" );
if ( pdei->dwStaticParams & DIEP_TRIGGERBUTTON )
DebugPrintf( " Static DIEP_TRIGGERBUTTON\n" );
if ( pdei->dwStaticParams & DIEP_TRIGGERREPEATINTERVAL )
DebugPrintf( " Static DIEP_TRIGGERREPEATINTERVAL\n" );
if ( pdei->dwStaticParams & DIEP_TYPESPECIFICPARAMS )
DebugPrintf( " Static DIEP_TYPESPECIFICPARAMS\n" );
if ( pdei->dwDynamicParams & DIEP_AXES )
DebugPrintf( " Dynamic DIEP_AXES\n" );
if ( pdei->dwDynamicParams & DIEP_DIRECTION )
DebugPrintf( " Dynamic DIEP_DIRECTION\n" );
if ( pdei->dwDynamicParams & DIEP_DURATION )
DebugPrintf( " Dynamic DIEP_DURATION\n" );
if ( pdei->dwDynamicParams & DIEP_ENVELOPE )
DebugPrintf( " Dynamic DIEP_ENVELOPE\n" );
if ( pdei->dwDynamicParams & DIEP_GAIN )
DebugPrintf( " Dynamic DIEP_GAIN\n" );
if ( pdei->dwDynamicParams & DIEP_SAMPLEPERIOD )
DebugPrintf( " Dynamic DIEP_SAMPLEPERIOD\n" );
if ( pdei->dwDynamicParams & DIEP_TRIGGERBUTTON )
DebugPrintf( " Dynamic DIEP_TRIGGERBUTTON\n" );
if ( pdei->dwDynamicParams & DIEP_TRIGGERREPEATINTERVAL )
DebugPrintf( " Dynamic DIEP_TRIGGERREPEATINTERVAL\n" );
if ( pdei->dwDynamicParams & DIEP_TYPESPECIFICPARAMS )
DebugPrintf( " Dynamic DIEP_TYPESPECIFICPARAMS\n" );
}
return DIENUM_CONTINUE;
}
char *FF_EffectName( FF_EffectID id )
{
static char buf[ 256 ];
if ( id >= ( FF_EffectID) 0 && id < FF_EFFECT_MAX )
{
return effect_name[ id ];
}
else
{
sprintf( buf, "Effect#%d", id );
return buf;
}
}
int FF_Init( void )
{
INIT_EFFECT_NAME( FF_EFFECT_PrimaryRecoil, "PrimaryRecoil" );
INIT_EFFECT_NAME( FF_EFFECT_SecondaryRecoil, "SecondaryRecoil" );
INIT_EFFECT_NAME( FF_EFFECT_Jolt, "Impact" );
INIT_EFFECT_NAME( FF_EFFECT_Engine, "Engine" );
INIT_EFFECT_NAME( FF_EFFECT_Damper, "Damper" );
INIT_EFFECT_NAME( FF_EFFECT_Inertia, "Inertia" );
INIT_EFFECT_TYPE( FF_CLASS_Constant, FF_TYPE_Constant, GUID_ConstantForce );
INIT_EFFECT_TYPE( FF_CLASS_Periodic, FF_TYPE_Triangle, GUID_Triangle );
INIT_EFFECT_TYPE( FF_CLASS_Periodic, FF_TYPE_SawtoothDown,GUID_SawtoothDown );
INIT_EFFECT_TYPE( FF_CLASS_Periodic, FF_TYPE_Sine, GUID_Sine );
INIT_EFFECT_TYPE( FF_CLASS_Condition, FF_TYPE_Spring, GUID_Spring );
INIT_EFFECT_TYPE( FF_CLASS_Condition, FF_TYPE_Damper, GUID_Damper );
INIT_EFFECT_TYPE( FF_CLASS_Condition, FF_TYPE_Inertia, GUID_Inertia );
return 1;
}
int FF_InitJoystick( int joystick )
{
int e;
FeedbackInfo *feedback;
for ( e = 0; e < FF_EFFECT_MAX; e++ )
{
FB_Effect[ joystick ][ e ].lpEffect = NULL;
}
JoystickInfo[ joystick ].feedback = NULL;
if ( !( diJoystickCaps[ joystick ].dwFlags & DIDC_FORCEFEEDBACK ) )
{
DebugPrintf( "FF_InitJoystick: joystick %s does not support force feedback\n",
JoystickInfo[ joystick ].Name );
return 0;
}
JoystickInfo[ joystick ].feedback = (FeedbackInfo *) calloc( sizeof( FeedbackInfo ), 1 );
if ( !JoystickInfo[ joystick ].feedback )
{
DebugPrintf( "FF_InitJoystick: joystick %s unable to allocate FeedbackInfo\n",
JoystickInfo[ joystick ].Name );
return 0;
}
feedback = JoystickInfo[ joystick ].feedback;
feedback->enable = 1;
feedback->gain = MAX_GAIN;
feedback->xscale = 1.0F;
feedback->yscale = 1.0F;
for ( e = 0; e < FF_EFFECT_MAX; e++ )
{
feedback->effect_setting[ e ].enable = 0;
feedback->effect_setting[ e ].gain = 0.0F;
}
IDirectInputDevice2_EnumEffects( lpdiJoystick[ joystick ], FF_EnumEffect,
(LPVOID) joystick, DIEFT_ALL );
return 1;
}
BOOL CALLBACK FF_ReleaseEffect( LPDIRECTINPUTEFFECT peff, LPVOID pvRef)
{
HRESULT err;
int joystick;
joystick = (int) pvRef;
DebugPrintf( "FF_ReleaseEffect: releasing effect for joystick %d\n", joystick );
err = JOYSTICK_COMMAND( joystick, IDirectInputEffect_Unload( peff ) );
if ( FAILED( err ) )
{
DebugPrintf( "FF_ReleaseEffect: joystick %s force feedback effect Unload() failed (%s)\n",
JoystickInfo[ joystick ].Name, FF_ErrorMsg( err ) );
}
err = JOYSTICK_COMMAND( joystick, IDirectInputEffect_Release( peff ) );
if ( FAILED( err ) )
{
DebugPrintf( "FF_ReleaseEffect: joystick %s force feedback effect Release() failed (%s)\n",
JoystickInfo[ joystick ].Name, FF_ErrorMsg( err ) );
}
return DIENUM_CONTINUE;
}
int FF_ReleaseJoystick( int joystick )
{
HRESULT err;
if ( lpdiJoystick[ joystick ] )
{
if ( diJoystickCaps[ joystick ].dwFlags & DIDC_FORCEFEEDBACK )
{
err = JOYSTICK_COMMAND( joystick,
IDirectInputDevice2_EnumCreatedEffectObjects( lpdiJoystick[ joystick ], FF_ReleaseEffect, (LPVOID) joystick, 0 ) );
if ( FAILED( err ) )
{
DebugPrintf( "FF_ReleaseJoystick: joystick %s EnumCreatedEffectObjects() failed (%s)\n",
JoystickInfo[ joystick ].Name, FF_ErrorMsg( err ) );
}
}
}
if ( JoystickInfo[ joystick ].feedback )
{
free( JoystickInfo[ joystick ].feedback );
JoystickInfo[ joystick ].feedback = NULL;
}
return 1;
}
int FF_CheckJoystick( int joystick )
{
HRESULT err;
DWORD status;
static DWORD last_status = 0;
err = JOYSTICK_COMMAND( joystick,
IDirectInputDevice2_GetForceFeedbackState( lpdiJoystick[ joystick ], &status ) );
if ( FAILED( err ) )
{
DebugPrintf( "FF_CheckJoystick: joystick %s GetForceFeedbackState() failed (%s)\n",
JoystickInfo[ joystick ].Name, FF_ErrorMsg( err ) );
return 0;
}
status ^= last_status;
last_status ^= status;
if ( status & DIGFFS_ACTUATORSOFF )
DebugPrintf( "FF_CheckJoystick: DIGFFS_ACTUATORSOFF=%d The device's force feedback actuators are disabled.\n",
( last_status & DIGFFS_ACTUATORSOFF ) ? 1 : 0 );
if ( status & DIGFFS_ACTUATORSON )
DebugPrintf( "FF_CheckJoystick: DIGFFS_ACTUATORSON=%d The device's force feedback actuators are enabled.\n",
( last_status & DIGFFS_ACTUATORSON ) ? 1 : 0 );
if ( status & DIGFFS_DEVICELOST )
DebugPrintf( "FF_CheckJoystick: DIGFFS_DEVICELOST=%d The device suffered an unexpected failure and is in an indeterminate state. It must be reset either by unacquiring and reacquiring the device, or by sending a DISFFC_RESET command.\n",
( last_status & DIGFFS_DEVICELOST ) ? 1 : 0 );
if ( status & DIGFFS_EMPTY )
DebugPrintf( "FF_CheckJoystick: DIGFFS_EMPTY=%d The device has no downloaded effects.\n",
( last_status & DIGFFS_EMPTY ) ? 1 : 0 );
if ( status & DIGFFS_PAUSED )
DebugPrintf( "FF_CheckJoystick: DIGFFS_PAUSED=%d Playback of all active effects has been paused.\n",
( last_status & DIGFFS_PAUSED ) ? 1 : 0 );
if ( status & DIGFFS_POWEROFF )
DebugPrintf( "FF_CheckJoystick: DIGFFS_POWEROFF=%d The force feedback system is not currently available. If the device cannot report the power state, then neither DIGFFS_POWERON nor DIGFFS_POWEROFF will be returned.\n",
( last_status & DIGFFS_POWEROFF ) ? 1 : 0 );
if ( status & DIGFFS_POWERON )
DebugPrintf( "FF_CheckJoystick: DIGFFS_POWERON=%d Power to the force feedback system is currently available. If the device cannot report the power state, then neither DIGFFS_POWERON nor DIGFFS_POWEROFF will be returned.\n",
( last_status & DIGFFS_POWERON ) ? 1 : 0 );
if ( status & DIGFFS_SAFETYSWITCHOFF )
DebugPrintf( "FF_CheckJoystick: DIGFFS_SAFETYSWITCHOFF=%d The safety switch is currently off, meaning that the device cannot operate. If the device cannot report the state of the safety switch, then neither DIGFFS_SAFETYSWITCHON nor DIGFFS_SAFETYSWITCHOFF will be returned.\n",
( last_status & DIGFFS_SAFETYSWITCHOFF ) ? 1 : 0 );
if ( status & DIGFFS_SAFETYSWITCHON )
DebugPrintf( "FF_CheckJoystick: DIGFFS_SAFETYSWITCHON=%d The safety switch is currently on, meaning that the device can operate. If the device cannot report the state of the safety switch, then neither DIGFFS_SAFETYSWITCHON nor DIGFFS_SAFETYSWITCHOFF will be returned.\n",
( last_status & DIGFFS_SAFETYSWITCHON ) ? 1 : 0 );
if ( status & DIGFFS_STOPPED )
DebugPrintf( "FF_CheckJoystick: DIGFFS_STOPPED=%d No effects are playing and the device is not paused.\n",
( last_status & DIGFFS_STOPPED ) ? 1 : 0 );
if ( status & DIGFFS_USERFFSWITCHOFF )
DebugPrintf( "FF_CheckJoystick: DIGFFS_USERFFSWITCHOFF=%d The user force feedback switch is currently off, meaning that the device cannot operate. If the device cannot report the state of the user force feedback switch, then neither DIGFFS_USERFFSWITCHON nor DIGFFS_USERFFSWITCHOFF will be returned.\n",
( last_status & DIGFFS_USERFFSWITCHOFF ) ? 1 : 0 );
if ( status & DIGFFS_USERFFSWITCHON )
DebugPrintf( "FF_CheckJoystick: DIGFFS_USERFFSWITCHON=%d The user force feedback switch is currently on, meaning that the device can operate. If the device cannot report the state of the user force feedback switch, then neither DIGFFS_USERFFSWITCHON nor DIGFFS_USERFFSWITCHOFF will be returned.\n",
( last_status & DIGFFS_USERFFSWITCHON ) ? 1 : 0 );
return 1;
}
static int FF_SetupCommonDefaults( FeedbackEffect *fb, FF_EffectID id, FeedbackInfo *feedback, DIDEVCAPS *caps )
{
fb->update = 0;
fb->playing = 0;
fb->effect.dwSize = sizeof( fb->effect );
fb->effect.dwFlags = DIEFF_CARTESIAN | DIEFF_OBJECTOFFSETS;
fb->effect.dwDuration = 0;
fb->effect.dwSamplePeriod = caps->dwFFSamplePeriod * 2;
fb->effect.dwGain = (DWORD) ( feedback->gain * feedback->effect_setting[ id ].gain * DI_FFNOMINALMAX );
fb->effect.dwTriggerButton = DIEB_NOTRIGGER;
fb->effect.dwTriggerRepeatInterval = 0;
fb->effect.lpEnvelope = NULL;
fb->envelope.dwSize = sizeof( fb->envelope );
return 1;
}
static int FF_SetupPeriodicDefaults( FeedbackEffect *fb, FF_EffectType type )
{
fb->type = type;
fb->effect.cbTypeSpecificParams = sizeof( fb->periodic );
fb->effect.lpvTypeSpecificParams = &fb->periodic;
fb->periodic.dwMagnitude = DI_FFNOMINALMAX;
fb->periodic.lOffset = 0;
fb->periodic.dwPhase = 0;
fb->periodic.dwPeriod = DI_SECONDS;
return 1;
}
static int FF_SetupConstantDefaults( FeedbackEffect *fb, FF_EffectType type )
{
fb->type = type;
fb->effect.cbTypeSpecificParams = sizeof( fb->constant );
fb->effect.lpvTypeSpecificParams = &fb->constant;
fb->constant.lMagnitude = DI_FFNOMINALMAX;
return 1;
}
static int FF_SetupConditionDefaults( FeedbackEffect *fb, FF_EffectType type )
{
DWORD axis;
fb->type = type;
fb->effect.cbTypeSpecificParams = fb->effect.cAxes * sizeof( fb->condition[ 0 ] );
fb->effect.lpvTypeSpecificParams = &fb->condition[ 0 ];
for ( axis = 0; axis < fb->effect.cAxes; axis++ )
{
fb->condition[ axis ].lOffset = 0;
fb->condition[ axis ].lPositiveCoefficient = 1;
fb->condition[ axis ].lNegativeCoefficient = 1;
fb->condition[ axis ].dwPositiveSaturation = DI_FFNOMINALMAX;
fb->condition[ axis ].dwNegativeSaturation = DI_FFNOMINALMAX;
fb->condition[ axis ].lDeadBand = (LONG) ( 0.2F * DI_FFNOMINALMAX );
}
return 1;
}
static int FF_SetupAxes( JOYSTICKINFO *joy, FeedbackEffect *fb )
{
fb->effect.rgdwAxes = &fb->axes[ 0 ];
fb->effect.rglDirection = &fb->direction[ 0 ];
if ( joy->Axis[ AXIS_XAxis ].feedback )
{
if ( joy->Axis[ AXIS_YAxis ].feedback )
{
fb->effect.cAxes = 2;
fb->axes[ 0 ] = DIJOFS_X;
fb->axes[ 1 ] = DIJOFS_Y;
fb->direction[ 0 ] = 1;
fb->direction[ 1 ] = 0;
}
else
{
fb->effect.cAxes = 1;
fb->axes[ 0 ] = DIJOFS_X;
fb->direction[ 0 ] = 1;
}
}
else if ( joy->Axis[ AXIS_YAxis ].feedback )
{
fb->effect.cAxes = 1;
fb->axes[ 0 ] = DIJOFS_Y;
fb->direction[ 0 ] = 1;
}
else
{
fb->effect.cAxes = 0;
return 0;
}
return 1;
}
static DWORD FF_UpdateGain( FeedbackEffect *fb, DIEFFECTINFO *effect, DWORD gain )
{
if ( effect->dwDynamicParams & DIEP_GAIN )
{
if ( fb->effect.dwGain != gain )
{
fb->effect.dwGain = gain;
return DIEP_GAIN;
}
else
return 0; // no change
}
else
{
#ifdef DEBUG_FF_DYNAMIC
DebugPrintf( "FF_UpdateGain: force feedback effect type %d (%s) does not support dynamic updating of gain\n",
fb->type, effect_type[ fb->type ] );
#endif
return 0;
}
}
static DWORD FF_UpdateDuration( FeedbackEffect *fb, DIEFFECTINFO *effect, DWORD duration )
{
if ( effect->dwDynamicParams & DIEP_DURATION )
{
if ( fb->effect.dwDuration != duration )
{
fb->effect.dwDuration = duration;
return DIEP_DURATION;
}
else
return 0; // no change
}
else
{
#ifdef DEBUG_FF_DYNAMIC
DebugPrintf( "FF_UpdateDuration: force feedback effect type %d (%s) does not support dynamic updating of duration\n",
fb->type, effect_type[ fb->type ] );
#endif
return 0;
}
}
static DWORD FF_UpdateEnvelope( FeedbackEffect *fb, DIEFFECTINFO *effect,
DWORD attack_level, DWORD attack_time,
DWORD fade_level, DWORD fade_time )
{
if ( effect->dwDynamicParams & DIEP_ENVELOPE )
{
if ( !fb->effect.lpEnvelope ||
fb->envelope.dwAttackLevel != attack_level ||
fb->envelope.dwAttackTime != attack_time ||
fb->envelope.dwFadeLevel != fade_level ||
fb->envelope.dwFadeTime != fade_time )
{
fb->effect.lpEnvelope = &fb->envelope;
fb->envelope.dwAttackLevel = attack_level;
fb->envelope.dwAttackTime = attack_time;
fb->envelope.dwFadeLevel = fade_level;
fb->envelope.dwFadeTime = fade_time;
return DIEP_ENVELOPE;
}
else
return 0; // no change
}
else
{
#ifdef DEBUG_FF_DYNAMIC
DebugPrintf( "FF_UpdateEnvelope: force feedback effect type %d (%s) does not support dynamic updating of envelope\n",
fb->type, effect_type[ fb->type ] );
#endif
return 0;
}
}
static DWORD FF_UpdatePeriodic( FeedbackEffect *fb, DIEFFECTINFO *effect,
DWORD magnitude, LONG offset, DWORD period )
{
if ( effect->dwDynamicParams & DIEP_TYPESPECIFICPARAMS )
{
if ( fb->periodic.dwMagnitude != magnitude ||
fb->periodic.lOffset != offset ||
fb->periodic.dwPeriod != period )
{
fb->periodic.dwMagnitude = magnitude;
fb->periodic.lOffset = offset;
fb->periodic.dwPeriod = period;
return DIEP_TYPESPECIFICPARAMS;
}
else
return 0; // no change
}
else
{
#ifdef DEBUG_FF_DYNAMIC
DebugPrintf( "FF_UpdatePeriodic: force feedback effect type %d (%s) does not support dynamic updating of periodic params\n",
fb->type, effect_type[ fb->type ] );
#endif
return 0;
}
}
static DWORD FF_UpdateConstant( FeedbackEffect *fb, DIEFFECTINFO *effect,
LONG magnitude )
{
if ( effect->dwDynamicParams & DIEP_TYPESPECIFICPARAMS )
{
if ( fb->constant.lMagnitude != magnitude )
{
fb->constant.lMagnitude = magnitude;
return DIEP_TYPESPECIFICPARAMS;
}
else
return 0; // no change
}
else
{
#ifdef DEBUG_FF_DYNAMIC
DebugPrintf( "FF_UpdateConstant: force feedback effect type %d (%s) does not support dynamic updating of constant params\n",
fb->type, effect_type[ fb->type ] );
#endif
return 0;
}
}
static DWORD FF_UpdateCondition( FeedbackEffect *fb, DIEFFECTINFO *effect,
LONG coefficient, DWORD saturation )
{
if ( effect->dwDynamicParams & DIEP_TYPESPECIFICPARAMS )
{
DWORD update;
DWORD axis;
update = 0;
for ( axis = 0; axis < fb->effect.cAxes; axis++ )
{
if ( fb->condition[ axis ].lPositiveCoefficient != coefficient
|| fb->condition[ axis ].lNegativeCoefficient != coefficient
|| fb->condition[ axis ].dwPositiveSaturation != saturation
|| fb->condition[ axis ].dwNegativeSaturation != saturation )
{
fb->condition[ axis ].lPositiveCoefficient = coefficient;
fb->condition[ axis ].lNegativeCoefficient = coefficient;
fb->condition[ axis ].dwPositiveSaturation = saturation;
fb->condition[ axis ].dwNegativeSaturation = saturation;
update = DIEP_TYPESPECIFICPARAMS;
}
}
return update;
}
else
{
#ifdef DEBUG_FF_DYNAMIC
DebugPrintf( "FF_UpdateConstant: force feedback effect type %d (%s) does not support dynamic updating of constant params\n",
fb->type, effect_type[ fb->type ] );
#endif
return 0;
}
}
static DWORD FF_UpdateDirection( FeedbackEffect *fb, DIEFFECTINFO *effect,
FeedbackInfo *feedback,
VECTOR *direction )
{
if ( effect->dwDynamicParams & DIEP_DIRECTION )
{
DWORD update;
DWORD axis_num;
float axis, min_axis, *axis_direction;
LONG lAxis;
update = 0;
axis_direction = (float *) &direction->x;
min_axis = 0.0F;
for ( axis_num = 0; axis_num < fb->effect.cAxes; axis_num++ )
{
switch ( fb->axes[ axis_num ] )
{
case DIJOFS_X:
axis = feedback->xscale * -axis_direction[ AXIS_XAxis ];
break;
case DIJOFS_Y:
axis = feedback->yscale * axis_direction[ AXIS_ZAxis ];
break;
default:
axis = 0;
}
if ( ( axis != 0.0F ) && ( !min_axis || fabs( axis ) < min_axis ) )
min_axis = (float) fabs( axis );
}
for ( axis_num = 0; axis_num < fb->effect.cAxes; axis_num++ )
{
switch ( fb->axes[ axis_num ] )
{
case DIJOFS_X:
axis = feedback->xscale * -axis_direction[ AXIS_XAxis ];
break;
case DIJOFS_Y:
axis = feedback->yscale * axis_direction[ AXIS_ZAxis ];
break;
default:
axis = axis_direction[ 0 ];
DebugPrintf( "FF_UpdateDirection: axis[ %d ] = %d unknown\n",
axis_num, fb->axes[ axis_num ] );
}
if ( min_axis )
{
lAxis = (LONG) ( axis / min_axis );
if ( fb->direction[ axis_num ] != lAxis )
{
fb->direction[ axis_num ] = lAxis;
update |= DIEP_DIRECTION;
}
}
}
if ( !min_axis )
{
if ( effect->dwDynamicParams & DIEP_GAIN )
{
fb->effect.dwGain = 0;
update = DIEP_GAIN;
}
}
return update;
}
else
{
#ifdef DEBUG_FF_DYNAMIC
DebugPrintf( "FF_UpdateDirection: force feedback effect type %d (%s) does not support dynamic updating of direction\n",
fb->type, effect_type[ fb->type ] );
#endif
return 0;
}
}
static int FF_CheckEffect( int joystick, FF_EffectID id, FF_EffectClass eclass,
JOYSTICKINFO **pjoy, FeedbackEffect **pfb, DIEFFECTINFO **peffect )
{
JOYSTICKINFO *joy;
FeedbackEffect *fb;
FeedbackInfo *feedback;
DIEFFECTINFO *effect;
if ( joystick < 0 || joystick >= Num_Joysticks
|| !JoystickInfo[ joystick ].connected )
{
return 0;
}
if ( !( diJoystickCaps[ joystick ].dwFlags & DIDC_FORCEFEEDBACK ) )
{
return 0;
}
joy = &JoystickInfo[ joystick ];
feedback = joy->feedback;
if ( !feedback )
{
return 0;
}
if ( !feedback->enable || feedback->gain < MIN_GAIN )
{
return 0;
}
if ( !feedback->effect_setting[ id ].enable || feedback->effect_setting[ id ].gain < MIN_GAIN )
{
return 0;
}
fb = &FB_Effect[ joystick ][ id ];
effect = &feedback->effect_info[ fb->type ];
if ( !fb->lpEffect )
{
DebugPrintf( "FF_CheckEffect: joystick %s force feedback effect #%d not created\n",
joy->Name, id );
return 0;
}
if ( eclass != FF_CLASS_MAX && effect_class[ fb->type ] != eclass )
{
DebugPrintf( "FF_CheckEffect: class mismatch found for force feedback effect #%d type %d (%s)\n",
id, fb->type, effect_type[ fb->type ] );
return 0;
}
if ( pjoy )
*pjoy = joy;
if ( pfb )
*pfb = fb;
if ( peffect )
*peffect = effect;
return 1;
}
static int FF_CheckEffectSetting( int joystick, FF_EffectID id, FF_EffectClass eclass,
JOYSTICKINFO **pjoy, FeedbackEffect **pfb, DIEFFECTINFO **peffect )
{
JOYSTICKINFO *joy;
FeedbackEffect *fb;
FeedbackInfo *feedback;
DIEFFECTINFO *effect;
if ( joystick < 0 || joystick >= Num_Joysticks
|| !JoystickInfo[ joystick ].connected )
{
return 0;
}
if ( !( diJoystickCaps[ joystick ].dwFlags & DIDC_FORCEFEEDBACK ) )
{
return 0;
}
joy = &JoystickInfo[ joystick ];
feedback = joy->feedback;
if ( !feedback )
{
return 0;
}
fb = &FB_Effect[ joystick ][ id ];
effect = &feedback->effect_info[ fb->type ];
if ( !fb->lpEffect )
{
DebugPrintf( "FF_CheckEffect: joystick %s force feedback effect #%d not created\n",
joy->Name, id );
return 0;
}
if ( eclass != FF_CLASS_MAX && effect_class[ fb->type ] != eclass )
{
DebugPrintf( "FF_CheckEffect: class mismatch found for force feedback effect #%d type %d (%s)\n",
id, fb->type, effect_type[ fb->type ] );
return 0;
}
if ( pjoy )
*pjoy = joy;
if ( pfb )
*pfb = fb;
if ( peffect )
*peffect = effect;
return 1;
}
int FF_Supported( int joystick )
{
DIDEVCAPS *caps;
if ( joystick < 0 || joystick >= Num_Joysticks
|| !JoystickInfo[ joystick ].connected )
{
return 0;
}
caps = &diJoystickCaps[ joystick ];
return ( ( caps->dwFlags & DIDC_FORCEFEEDBACK ) ? 1 : 0 );
}
int FF_CreateEffect( int joystick, FF_EffectID id, FF_EffectType type )
{
HRESULT err;
JOYSTICKINFO *joy;
FeedbackEffect *fb;
DIDEVCAPS *caps;
if ( joystick < 0 || joystick >= Num_Joysticks
|| !JoystickInfo[ joystick ].connected )
{
return 0;
}
caps = &diJoystickCaps[ joystick ];
if ( !( caps->dwFlags & DIDC_FORCEFEEDBACK ) )
{
DebugPrintf( "FF_CreateEffect: joystick %s does not support force feedback\n",
JoystickInfo[ joystick ].Name );
return 0;
}
joy = &JoystickInfo[ joystick ];
if ( !joy->feedback->effect_info[ type ].dwSize )
{
DebugPrintf( "FF_CreateEffect: joystick %s does not support force feedback effect type %d (%s)\n",
joy->Name, type, effect_type[ type ] );
return 0;
}
fb = &FB_Effect[ joystick ][ id ];
if ( fb->lpEffect )
{
DebugPrintf( "FF_CreateEffect: joystick %s force feedback effect #%d already created\n",
joy->Name, id );
return 0;
}
FF_SetupCommonDefaults( fb, id, joy->feedback, caps );
if ( !FF_SetupAxes( joy, fb ) )
{
DebugPrintf( "FF_CreateEffect: joystick %s does not support force feedback in X or Y axis\n",
joy->Name );
return 0;
}
switch ( effect_class[ type ] )
{
case FF_CLASS_Constant:
FF_SetupConstantDefaults( fb, type );
break;
case FF_CLASS_Periodic:
FF_SetupPeriodicDefaults( fb, type );
break;
case FF_CLASS_Condition:
FF_SetupConditionDefaults( fb, type );
break;
}
err = JOYSTICK_COMMAND( joystick, IDirectInputDevice2_CreateEffect( lpdiJoystick[ joystick ],
&effect_guid[ type ], &fb->effect, &fb->lpEffect, NULL ) );
if ( FAILED( err ) )
{
DebugPrintf( "FF_CreateEffect: joystick %s force feedback effect #%d (%s) CreateEffect() failed\n",
joy->Name, id,
joy->feedback->effect_info[ type ].tszName );
fb->lpEffect = NULL;
return 0;
}
return 1;
}
int FF_StartEffect( int joystick, FF_EffectID id )
{
HRESULT err;
JOYSTICKINFO *joy;
FeedbackEffect *fb;
DIEFFECTINFO *effect;
if ( !FF_CheckEffectSetting( joystick, id, FF_CLASS_MAX, &joy, &fb, &effect ) )
{
return 0;
}
err = JOYSTICK_COMMAND( joystick, IDirectInputEffect_Start( fb->lpEffect, 1, 0 ) );
if ( FAILED( err ) )
{
DebugPrintf( "FF_StartEffect: joystick %s force feedback effect #%d (%s) Start() failed (%s)\n",
joy->Name, id, effect->tszName, FF_ErrorMsg( err ) );
return 0;
}
fb->playing = 1;
return 1;
}
int FF_StopEffect( int joystick, FF_EffectID id )
{
HRESULT err;
JOYSTICKINFO *joy;
FeedbackEffect *fb;
DIEFFECTINFO *effect;
if ( !FF_CheckEffectSetting( joystick, id, FF_CLASS_MAX, &joy, &fb, &effect ) )
{
return 0;
}
err = JOYSTICK_COMMAND( joystick, IDirectInputEffect_Stop( fb->lpEffect ) );
if ( FAILED( err ) )
{
DebugPrintf( "FF_StopEffect: joystick %s force feedback effect #%d (%s) Stop() failed\n",
joy->Name, id, effect->tszName );
return 0;
}
fb->playing = 0;
return 1;
}