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Attempt to handle unstable device IDs

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This commit is contained in:
mazmazz 2018-12-14 00:22:25 -05:00
parent 216e710b87
commit 44d6a1d236
2 changed files with 40 additions and 11 deletions
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22
src/sdl/i_system.c
View file

@ -1019,10 +1019,9 @@ void I_GetJoystickEvents(void)
*/
static int joy_open(const char *fname)
static int joy_open(int joyindex)
{
SDL_Joystick *newdev = NULL;
int joyindex = atoi(fname);
int num_joy = 0;
if (SDL_WasInit(SDL_INIT_JOYSTICK) == 0)
@ -1292,10 +1291,9 @@ void I_GetJoystick2Events(void)
*/
static int joy_open2(const char *fname)
static int joy_open2(int joyindex)
{
SDL_Joystick *newdev = NULL;
int joyindex = atoi(fname);
int num_joy = 0;
if (SDL_WasInit(SDL_INIT_JOYSTICK) == 0)
@ -1392,16 +1390,18 @@ void I_InitJoystick(void)
}
}
if (strcmp(cv_usejoystick.string, "0") && joy_open(cv_usejoystick.string) != -1)
if (cv_usejoystick.value && joy_open(cv_usejoystick.value) != -1)
{
JoyInfo.oldjoy = atoi(cv_usejoystick.string);
// SDL's device indexes are unstable, so cv_usejoystick may not match
// the actual device index. So let's cheat a bit and use the instance ID.
// oldjoy's exact value doesn't matter, because we use it like a boolean
JoyInfo.oldjoy = SDL_JoystickInstanceID(JoyInfo.dev) + 1;
joystick_started = 1;
}
else
{
if (JoyInfo.oldjoy)
I_ShutdownJoystick();
cv_usejoystick.value = 0;
joystick_started = 0;
}
}
@ -1423,16 +1423,18 @@ void I_InitJoystick2(void)
}
}
if (strcmp(cv_usejoystick2.string, "0") && joy_open2(cv_usejoystick2.string) != -1)
if (cv_usejoystick2.value && joy_open2(cv_usejoystick2.value) != -1)
{
JoyInfo2.oldjoy = atoi(cv_usejoystick2.string);
// SDL's device indexes are unstable, so cv_usejoystick2 may not match
// the actual device index. So let's cheat a bit and use the instance ID.
// oldjoy's exact value doesn't matter, because we use it like a boolean
JoyInfo2.oldjoy = SDL_JoystickInstanceID(JoyInfo2.dev) + 1;
joystick2_started = 1;
}
else
{
if (JoyInfo2.oldjoy)
I_ShutdownJoystick2();
cv_usejoystick2.value = 0;
joystick2_started = 0;
}

29
src/sdl/i_video.c
View file

@ -885,7 +885,27 @@ void I_GetEvent(void)
case SDL_JOYDEVICEADDED:
CONS_Debug(DBG_GAMELOGIC, "Joystick device index %d added\n", evt.jdevice.which + 1);
// recount hotplugged joysticks
// Because SDL's device index is unstable, we're going to cheat here a bit:
// For the first joystick setting that is NOT active:
// Set cv_usejoystickX.value to the new device index (this does not change what is written to config.cfg)
// Set OTHERS' cv_usejoystickX.value to THEIR new device index, because it likely changed
if (!JoyInfo.dev || !SDL_JoystickGetAttached(JoyInfo.dev))
{
cv_usejoystick.value = evt.jdevice.which + 1;
if (JoyInfo2.dev)
cv_usejoystick2.value = SDL_JoystickInstanceID(JoyInfo2.dev) + 1;
}
else if (!JoyInfo2.dev || !SDL_JoystickGetAttached(JoyInfo2.dev))
{
cv_usejoystick2.value = evt.jdevice.which + 1;
if (JoyInfo.dev)
cv_usejoystick.value = SDL_JoystickInstanceID(JoyInfo.dev) + 1;
}
// If an active joystick's index has changed, these will just
// change the corresponding JoyInfo.oldjoy
I_InitJoystick();
I_InitJoystick2();
@ -909,6 +929,13 @@ void I_GetEvent(void)
I_ShutdownJoystick2();
}
// Update the device indexes, because they likely changed
if (JoyInfo.dev)
JoyInfo.oldjoy = SDL_JoystickInstanceID(JoyInfo.dev) + 1;
if (JoyInfo2.dev)
JoyInfo2.oldjoy = SDL_JoystickInstanceID(JoyInfo2.dev) + 1;
CONS_Debug(DBG_GAMELOGIC, "Joystick1 device index: %d\n", JoyInfo.oldjoy);
CONS_Debug(DBG_GAMELOGIC, "Joystick2 device index: %d\n", JoyInfo2.oldjoy);