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Added SDL_JoystickGetAxisInitialState() to get a joystick axis' initial value.

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This is useful for controller mapping programs to determine an axis' zero state
This commit is contained in:
Sam Lantinga
2017-01-04 10:28:07 -08:00
parent 99e10ef506
commit 4938c5054e
6 changed files with 45 additions and 3 deletions
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8
test/controllermap.c
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@@ -337,6 +337,7 @@ WatchJoystick(SDL_Joystick * joystick)
Uint8 alpha=200, alpha_step = -1;
Uint32 alpha_ticks = 0;
SDL_JoystickID nJoystickID;
int iIndex;
/* Create a window to display joystick axis position */
window = SDL_CreateWindow("Game Controller Map", SDL_WINDOWPOS_CENTERED,
@@ -383,6 +384,13 @@ WatchJoystick(SDL_Joystick * joystick)
s_nNumAxes = SDL_JoystickNumAxes(joystick);
s_arrAxisState = SDL_calloc(s_nNumAxes, sizeof(*s_arrAxisState));
for (iIndex = 0; iIndex < s_nNumAxes; ++iIndex) {
AxisState *pAxisState = &s_arrAxisState[iIndex];
Sint16 nInitialValue;
pAxisState->m_bMoving = SDL_JoystickGetAxisInitialState(joystick, iIndex, &nInitialValue);
pAxisState->m_nStartingValue = nInitialValue;
pAxisState->m_nFarthestValue = nInitialValue;
}
/* Loop, getting joystick events! */
while (!done && !s_bBindingComplete) {