void InitAxisBinding(AxisBinding &ab, const std::string &bindName, const std::string &defaultAxis) {
std::string axisName = Pi::config->String(bindName.c_str());
if (axisName.length() == 0) {
axisName = defaultAxis;
Pi::config->SetString(bindName.c_str(), axisName.c_str());
}
// set the binding from the configured or default value
if (!AxisBinding::FromString(axisName.c_str(), ab)) {
Output("invalid axis binding '%s' in config file for %s\n", axisName.c_str(), bindName.c_str());
ab.Clear();
}
}
bool AxisBinding::FromString(const char *str, AxisBinding &ab) {
if (strcmp(str, "disabled") == 0) {
ab.Clear();
return true;
}
const char *p = str;
if (p[0] == '-') {
ab.direction = NEGATIVE;
p++;
}
else
ab.direction = POSITIVE;
if (strncmp(p, "Joy", 3) != 0)
return false;
p += 3;
const int JoyUUIDLength = 33;
char joyUUIDBuf[JoyUUIDLength];
// read the UUID
if (!ReadToTok('/', &p, joyUUIDBuf, JoyUUIDLength)) {
return false;
}
// force terminate
joyUUIDBuf[JoyUUIDLength-1] = '\0';
// now, map the GUID to a joystick number
const int joystick = Pi::JoystickFromGUIDString(joyUUIDBuf);
if (joystick == -1) {
return false;
}
// found a joystick
assert(joystick < 256);
ab.joystick = Uint8(joystick);
if (strncmp(p, "Axis", 4) != 0)
return false;
p += 4;
ab.axis = atoi(p);
return true;
}
AxisBinding AxisBinding::FromString(const char *str) {
AxisBinding ab;
if (!AxisBinding::FromString(str, ab))
ab.Clear();
return ab;
}
