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input_common/sdl/sdl_impl: Mark variables const where applicable

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Make it explicit that these aren't modified elsewhere (either through
functions by reference, or by other operations).
This commit is contained in:
Lioncash 2019-06-03 16:30:33 -04:00
parent ca7ca2919c
commit 50048d9f5a
1 changed files with 11 additions and 10 deletions
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21
src/input_common/sdl/sdl_impl.cpp
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@ -24,7 +24,7 @@
namespace InputCommon::SDL { namespace InputCommon::SDL {
static std::string GetGUID(SDL_Joystick* joystick) { static std::string GetGUID(SDL_Joystick* joystick) {
SDL_JoystickGUID guid = SDL_JoystickGetGUID(joystick); const SDL_JoystickGUID guid = SDL_JoystickGetGUID(joystick);
char guid_str[33]; char guid_str[33];
SDL_JoystickGetGUIDString(guid, guid_str, sizeof(guid_str)); SDL_JoystickGetGUIDString(guid, guid_str, sizeof(guid_str));
return guid_str; return guid_str;
@ -158,7 +158,7 @@ std::shared_ptr<SDLJoystick> SDLState::GetSDLJoystickBySDLID(SDL_JoystickID sdl_
const std::string guid = GetGUID(sdl_joystick); const std::string guid = GetGUID(sdl_joystick);
std::lock_guard lock{joystick_map_mutex}; std::lock_guard lock{joystick_map_mutex};
auto map_it = joystick_map.find(guid); const auto map_it = joystick_map.find(guid);
if (map_it != joystick_map.end()) { if (map_it != joystick_map.end()) {
const auto vec_it = const auto vec_it =
std::find_if(map_it->second.begin(), map_it->second.end(), std::find_if(map_it->second.begin(), map_it->second.end(),
@ -320,9 +320,10 @@ public:
trigger_if_greater(trigger_if_greater_) {} trigger_if_greater(trigger_if_greater_) {}
bool GetStatus() const override { bool GetStatus() const override {
float axis_value = joystick->GetAxis(axis); const float axis_value = joystick->GetAxis(axis);
if (trigger_if_greater) if (trigger_if_greater) {
return axis_value > threshold; return axis_value > threshold;
}
return axis_value < threshold; return axis_value < threshold;
} }
@ -447,7 +448,7 @@ public:
const int port = params.Get("port", 0); const int port = params.Get("port", 0);
const int axis_x = params.Get("axis_x", 0); const int axis_x = params.Get("axis_x", 0);
const int axis_y = params.Get("axis_y", 1); const int axis_y = params.Get("axis_y", 1);
float deadzone = std::clamp(params.Get("deadzone", 0.0f), 0.0f, .99f); const float deadzone = std::clamp(params.Get("deadzone", 0.0f), 0.0f, .99f);
auto joystick = state.GetSDLJoystickByGUID(guid, port); auto joystick = state.GetSDLJoystickByGUID(guid, port);
@ -515,7 +516,7 @@ static Common::ParamPackage SDLEventToButtonParamPackage(SDLState& state, const
switch (event.type) { switch (event.type) {
case SDL_JOYAXISMOTION: { case SDL_JOYAXISMOTION: {
auto joystick = state.GetSDLJoystickBySDLID(event.jaxis.which); const auto joystick = state.GetSDLJoystickBySDLID(event.jaxis.which);
params.Set("port", joystick->GetPort()); params.Set("port", joystick->GetPort());
params.Set("guid", joystick->GetGUID()); params.Set("guid", joystick->GetGUID());
params.Set("axis", event.jaxis.axis); params.Set("axis", event.jaxis.axis);
@ -529,14 +530,14 @@ static Common::ParamPackage SDLEventToButtonParamPackage(SDLState& state, const
break; break;
} }
case SDL_JOYBUTTONUP: { case SDL_JOYBUTTONUP: {
auto joystick = state.GetSDLJoystickBySDLID(event.jbutton.which); const auto joystick = state.GetSDLJoystickBySDLID(event.jbutton.which);
params.Set("port", joystick->GetPort()); params.Set("port", joystick->GetPort());
params.Set("guid", joystick->GetGUID()); params.Set("guid", joystick->GetGUID());
params.Set("button", event.jbutton.button); params.Set("button", event.jbutton.button);
break; break;
} }
case SDL_JOYHATMOTION: { case SDL_JOYHATMOTION: {
auto joystick = state.GetSDLJoystickBySDLID(event.jhat.which); const auto joystick = state.GetSDLJoystickBySDLID(event.jhat.which);
params.Set("port", joystick->GetPort()); params.Set("port", joystick->GetPort());
params.Set("guid", joystick->GetGUID()); params.Set("guid", joystick->GetGUID());
params.Set("hat", event.jhat.hat); params.Set("hat", event.jhat.hat);
@ -623,7 +624,7 @@ public:
} }
// An analog device needs two axes, so we need to store the axis for later and wait for // An analog device needs two axes, so we need to store the axis for later and wait for
// a second SDL event. The axes also must be from the same joystick. // a second SDL event. The axes also must be from the same joystick.
int axis = event.jaxis.axis; const int axis = event.jaxis.axis;
if (analog_xaxis == -1) { if (analog_xaxis == -1) {
analog_xaxis = axis; analog_xaxis = axis;
analog_axes_joystick = event.jaxis.which; analog_axes_joystick = event.jaxis.which;
@ -634,7 +635,7 @@ public:
} }
Common::ParamPackage params; Common::ParamPackage params;
if (analog_xaxis != -1 && analog_yaxis != -1) { if (analog_xaxis != -1 && analog_yaxis != -1) {
auto joystick = state.GetSDLJoystickBySDLID(event.jaxis.which); const auto joystick = state.GetSDLJoystickBySDLID(event.jaxis.which);
params.Set("engine", "sdl"); params.Set("engine", "sdl");
params.Set("port", joystick->GetPort()); params.Set("port", joystick->GetPort());
params.Set("guid", joystick->GetGUID()); params.Set("guid", joystick->GetGUID());