bool DEV_Joystick::aAxisPairDirectionIsPositive(int axis, int dir)
{
int res;
if (dir==JOYAXIS_UP || dir==JOYAXIS_DOWN)
res = pGetAxis(axis, 1);
else /* JOYAXIS_LEFT || JOYAXIS_RIGHT */
res = pGetAxis(axis, 0);
if (dir==JOYAXIS_DOWN || dir==JOYAXIS_RIGHT)
return (res > m_prec) ? true : false;
else /* JOYAXIS_UP || JOYAXIS_LEFT */
return (res < -m_prec) ? true : false;
}
SCA_Joystick *SCA_Joystick::GetInstance( short int joyindex )
{
#ifndef WITH_SDL
return NULL;
#else /* WITH_SDL */
if (joyindex < 0 || joyindex >= JOYINDEX_MAX) {
echo("Error-invalid joystick index: " << joyindex);
return NULL;
}
if (m_refCount == 0)
{
int i;
// The video subsystem is required for joystick input to work. However,
// when GHOST is running under SDL, video is initialized elsewhere.
// Do this once only.
# ifdef WITH_GHOST_SDL
if (SDL_InitSubSystem(SDL_INIT_JOYSTICK) == -1 ) {
# else
if (SDL_InitSubSystem(SDL_INIT_JOYSTICK | SDL_INIT_VIDEO) == -1 ) {
# endif
echo("Error-Initializing-SDL: " << SDL_GetError());
return NULL;
}
m_joynum = SDL_NumJoysticks();
for (i=0; i<JOYINDEX_MAX; i++) {
m_instance[i] = new SCA_Joystick(i);
m_instance[i]->CreateJoystickDevice();
}
m_refCount = 1;
}
else
{
m_refCount++;
}
return m_instance[joyindex];
#endif /* WITH_SDL */
}
void SCA_Joystick::ReleaseInstance()
{
if (--m_refCount == 0)
{
#ifdef WITH_SDL
int i;
for (i=0; i<JOYINDEX_MAX; i++) {
if (m_instance[i]) {
m_instance[i]->DestroyJoystickDevice();
delete m_instance[i];
}
m_instance[i]= NULL;
}
// The video subsystem is required for joystick input to work. However,
// when GHOST is running under SDL, video is freed elsewhere.
// Do this once only.
# ifdef WITH_GHOST_SDL
SDL_QuitSubSystem(SDL_INIT_JOYSTICK);
# else
SDL_QuitSubSystem(SDL_INIT_JOYSTICK | SDL_INIT_VIDEO);
# endif
#endif /* WITH_SDL */
}
}
void SCA_Joystick::cSetPrecision(int val)
{
m_prec = val;
}
bool SCA_Joystick::aAxisPairIsPositive(int axis)
{
return (pAxisTest(axis) > m_prec) ? true:false;
}
bool SCA_Joystick::aAxisPairDirectionIsPositive(int axis, int dir)
{
int res;
if (dir==JOYAXIS_UP || dir==JOYAXIS_DOWN)
res = pGetAxis(axis, 1);
else /* JOYAXIS_LEFT || JOYAXIS_RIGHT */
res = pGetAxis(axis, 0);
if (dir==JOYAXIS_DOWN || dir==JOYAXIS_RIGHT)
return (res > m_prec) ? true : false;
else /* JOYAXIS_UP || JOYAXIS_LEFT */
return (res < -m_prec) ? true : false;
}
