static boolean IsAxisButton(int physbutton)
{
if (IS_BUTTON_AXIS(joystick_x_axis))
{
if (physbutton == BUTTON_AXIS_NEG(joystick_x_axis)
|| physbutton == BUTTON_AXIS_POS(joystick_x_axis))
{
return true;
}
}
if (IS_BUTTON_AXIS(joystick_y_axis))
{
if (physbutton == BUTTON_AXIS_NEG(joystick_y_axis)
|| physbutton == BUTTON_AXIS_POS(joystick_y_axis))
{
return true;
}
}
if (IS_BUTTON_AXIS(joystick_strafe_axis))
{
if (physbutton == BUTTON_AXIS_NEG(joystick_strafe_axis)
|| physbutton == BUTTON_AXIS_POS(joystick_strafe_axis))
{
return true;
}
}
return false;
}
static int NextCalibrateStage(txt_joystick_axis_t *joystick_axis)
{
switch (joystick_axis->config_stage)
{
case CONFIG_CENTER:
return CONFIG_STAGE1;
// After pushing to the left, there are two possibilities:
// either it is a button axis, in which case we need to find
// the other button, or we can just move on to the next axis.
case CONFIG_STAGE1:
if (IS_BUTTON_AXIS(*joystick_axis->axis))
{
return CONFIG_STAGE2;
}
else
{
return CONFIG_CENTER;
}
case CONFIG_STAGE2:
return CONFIG_CENTER;
}
return -1;
}
static int NextCalibrateStage(void)
{
switch (calibrate_stage)
{
case CALIBRATE_CENTER:
return CALIBRATE_LEFT;
// After pushing to the left, there are two possibilities:
// either it is a button axis, in which case we need to find
// the other button, or we can just move on to the next axis.
case CALIBRATE_LEFT:
if (IS_BUTTON_AXIS(joystick_x_axis))
{
return CALIBRATE_RIGHT;
}
else
{
return CALIBRATE_UP;
}
case CALIBRATE_RIGHT:
return CALIBRATE_UP;
case CALIBRATE_UP:
if (IS_BUTTON_AXIS(joystick_y_axis))
{
return CALIBRATE_DOWN;
}
else
{
// Finished.
return CALIBRATE_CENTER;
}
case CALIBRATE_DOWN:
// Finished.
return CALIBRATE_CENTER;
}
}
static void TXT_JoystickAxisDrawer(TXT_UNCAST_ARG(joystick_axis))
{
TXT_CAST_ARG(txt_joystick_axis_t, joystick_axis);
char buf[JOYSTICK_AXIS_WIDTH + 1];
int i;
if (*joystick_axis->axis < 0)
{
M_StringCopy(buf, "(none)", sizeof(buf));
}
else if (IS_BUTTON_AXIS(*joystick_axis->axis))
{
int neg, pos;
neg = BUTTON_AXIS_NEG(*joystick_axis->axis);
pos = BUTTON_AXIS_POS(*joystick_axis->axis);
M_snprintf(buf, sizeof(buf), "BUTTONS #%i+#%i", neg, pos);
}
else if (IS_HAT_AXIS(*joystick_axis->axis))
{
int hat, dir;
hat = HAT_AXIS_HAT(*joystick_axis->axis);
dir = HAT_AXIS_DIRECTION(*joystick_axis->axis);
M_snprintf(buf, sizeof(buf), "HAT #%i (%s)", hat,
dir == HAT_AXIS_HORIZONTAL ? "horizontal" : "vertical");
}
else
{
M_snprintf(buf, sizeof(buf), "AXIS #%i", *joystick_axis->axis);
}
TXT_SetWidgetBG(joystick_axis);
TXT_FGColor(TXT_COLOR_BRIGHT_WHITE);
TXT_DrawString(buf);
for (i = TXT_UTF8_Strlen(buf); i < joystick_axis->widget.w; ++i)
{
TXT_DrawString(" ");
}
}
static boolean IsValidAxis(int axis)
{
int num_axes;
if (axis < 0)
{
return true;
}
if (IS_BUTTON_AXIS(axis))
{
return true;
}
if (IS_HAT_AXIS(axis))
{
return HAT_AXIS_HAT(axis) < SDL_JoystickNumHats(joystick);
}
num_axes = SDL_JoystickNumAxes(joystick);
return axis < num_axes;
}
static int GetAxisState(int axis, int invert)
{
int result;
// Axis -1 means disabled.
if (axis < 0)
{
return 0;
}
// Is this a button axis, or a hat axis?
// If so, we need to handle it specially.
result = 0;
if (IS_BUTTON_AXIS(axis))
{
if (SDL_JoystickGetButton(joystick, BUTTON_AXIS_NEG(axis)))
{
result -= 32767;
}
if (SDL_JoystickGetButton(joystick, BUTTON_AXIS_POS(axis)))
{
result += 32767;
}
}
else if (IS_HAT_AXIS(axis))
{
int direction = HAT_AXIS_DIRECTION(axis);
int hatval = SDL_JoystickGetHat(joystick, HAT_AXIS_HAT(axis));
if (direction == HAT_AXIS_HORIZONTAL)
{
if ((hatval & SDL_HAT_LEFT) != 0)
{
result -= 32767;
}
else if ((hatval & SDL_HAT_RIGHT) != 0)
{
result += 32767;
}
}
else if (direction == HAT_AXIS_VERTICAL)
{
if ((hatval & SDL_HAT_UP) != 0)
{
result -= 32767;
}
else if ((hatval & SDL_HAT_DOWN) != 0)
{
result += 32767;
}
}
}
else
{
result = SDL_JoystickGetAxis(joystick, axis);
if (result < DEAD_ZONE && result > -DEAD_ZONE)
{
result = 0;
}
}
if (invert)
{
result = -result;
}
return result;
}
