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ES-DE/es-core/src/InputManager.cpp

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// SPDX-License-Identifier: MIT
//
// EmulationStation Desktop Edition
// InputManager.cpp
//
// Low-level input handling.
// Initiates and maps the keyboard and controllers.
// Reads and writes the es_input.xml configuration file.
//
#include "InputManager.h"
#include "Log.h"
#include "Scripting.h"
#include "Window.h"
#include "resources/ResourceManager.h"
#include "utils/FileSystemUtil.h"
#include "utils/PlatformUtil.h"
#include "utils/StringUtil.h"
#include <iostream>
#include <pugixml.hpp>
#define KEYBOARD_GUID_STRING "-1"
#define CEC_GUID_STRING "-2"
namespace
{
int SDL_USER_CECBUTTONDOWN {-1};
int SDL_USER_CECBUTTONUP {-1};
} // namespace
InputManager::InputManager() noexcept
: mWindow {Window::getInstance()}
, mKeyboardInputConfig {nullptr}
{
}
InputManager::~InputManager()
{
// Deinit when destroyed.
deinit();
}
InputManager& InputManager::getInstance()
{
static InputManager instance;
return instance;
}
void InputManager::init()
{
if (initialized())
deinit();
mConfigFileExists = false;
LOG(LogInfo) << "Setting up InputManager...";
SDL_InitSubSystem(SDL_INIT_GAMECONTROLLER);
SDL_GameControllerEventState(SDL_ENABLE);
if (!Utils::FileSystem::exists(getConfigPath())) {
LOG(LogInfo) << "No input configuration file found, default mappings will be applied";
}
else {
mConfigFileExists = true;
}
mKeyboardInputConfig =
std::make_unique<InputConfig>(DEVICE_KEYBOARD, "Keyboard", KEYBOARD_GUID_STRING);
bool customConfig = loadInputConfig(mKeyboardInputConfig.get());
if (customConfig) {
LOG(LogInfo) << "Added keyboard with custom configuration";
}
else {
loadDefaultKBConfig();
LOG(LogInfo) << "Added keyboard with default configuration";
}
// Load optional controller mappings. Normally the supported controllers should be compiled
// into SDL as a header file, but if a user has a very rare controller that is not supported,
// the bundled mapping is incorrect, or the SDL version is a bit older, it makes sense to be
// able to customize this. If a controller GUID is present in the mappings file that is
// already present inside SDL, the custom mapping will overwrite the bundled one.
std::string mappingsFile =
Utils::FileSystem::getHomePath() + "/.emulationstation/" + "es_controller_mappings.cfg";
if (!Utils::FileSystem::exists(mappingsFile))
mappingsFile = ResourceManager::getInstance().getResourcePath(
":/controllers/es_controller_mappings.cfg");
int controllerMappings = SDL_GameControllerAddMappingsFromFile(mappingsFile.c_str());
if (controllerMappings != -1 && controllerMappings != 0) {
LOG(LogInfo) << "Loaded " << controllerMappings << " controller "
<< (controllerMappings == 1 ? "mapping" : "mappings");
}
int numJoysticks = SDL_NumJoysticks();
// Make sure that every joystick is actually supported by the GameController API.
for (int i = 0; i < numJoysticks; ++i)
if (!SDL_IsGameController(i))
--numJoysticks;
for (int i = 0; i < numJoysticks; ++i)
addControllerByDeviceIndex(nullptr, i);
SDL_USER_CECBUTTONDOWN = SDL_RegisterEvents(2);
SDL_USER_CECBUTTONUP = SDL_USER_CECBUTTONDOWN + 1;
mCECInputConfig = std::make_unique<InputConfig>(DEVICE_CEC, "CEC", CEC_GUID_STRING);
loadInputConfig(mCECInputConfig.get());
}
void InputManager::deinit()
{
if (!initialized())
return;
for (auto it = mControllers.cbegin(); it != mControllers.cend(); ++it)
SDL_GameControllerClose(it->second);
mControllers.clear();
mJoysticks.clear();
mPrevAxisValues.clear();
mPrevButtonValues.clear();
mInputConfigs.clear();
mKeyboardInputConfig.reset();
mCECInputConfig.reset();
SDL_GameControllerEventState(SDL_DISABLE);
SDL_QuitSubSystem(SDL_INIT_GAMECONTROLLER);
}
void InputManager::writeDeviceConfig(InputConfig* config)
{
assert(initialized());
std::string path = getConfigPath();
LOG(LogDebug) << "InputManager::writeDeviceConfig(): "
"Saving input configuration file to \""
<< path << "\"";
pugi::xml_document doc;
if (Utils::FileSystem::exists(path)) {
// Merge files.
#if defined(_WIN64)
pugi::xml_parse_result result =
doc.load_file(Utils::String::stringToWideString(path).c_str());
#else
pugi::xml_parse_result result = doc.load_file(path.c_str());
#endif
if (!result) {
LOG(LogError) << "Couldn't parse input configuration file: " << result.description();
}
else {
// Successfully loaded, delete the old entry if it exists.
pugi::xml_node root = doc.child("inputList");
if (root) {
// If inputAction @type=onfinish is set, let doOnFinish command take care of
// creating input configuration. We just put the input configuration into a
// temporary input config file.
pugi::xml_node actionnode =
root.find_child_by_attribute("inputAction", "type", "onfinish");
if (actionnode) {
path = getTemporaryConfigPath();
doc.reset();
root = doc.append_child("inputList");
root.append_copy(actionnode);
}
else {
pugi::xml_node oldEntry = root.find_child_by_attribute(
"inputConfig", "deviceGUID", config->getDeviceGUIDString().c_str());
if (oldEntry)
root.remove_child(oldEntry);
oldEntry = root.find_child_by_attribute("inputConfig", "deviceName",
config->getDeviceName().c_str());
if (oldEntry)
root.remove_child(oldEntry);
}
}
}
}
pugi::xml_node root = doc.child("inputList");
if (!root)
root = doc.append_child("inputList");
config->writeToXML(root);
#if defined(_WIN64)
doc.save_file(Utils::String::stringToWideString(path).c_str());
#else
doc.save_file(path.c_str());
#endif
Scripting::fireEvent("config-changed");
Scripting::fireEvent("controls-changed");
// Execute any doOnFinish commands and reload the config for changes.
doOnFinish();
mConfigFileExists = true;
loadInputConfig(config);
}
void InputManager::doOnFinish()
{
assert(initialized());
std::string path = getConfigPath();
pugi::xml_document doc;
if (Utils::FileSystem::exists(path)) {
#if defined(_WIN64)
pugi::xml_parse_result result =
doc.load_file(Utils::String::stringToWideString(path).c_str());
#else
pugi::xml_parse_result result = doc.load_file(path.c_str());
#endif
if (!result) {
LOG(LogError) << "Couldn't parse input configuration file: " << result.description();
}
else {
pugi::xml_node root = doc.child("inputList");
if (root) {
root = root.find_child_by_attribute("inputAction", "type", "onfinish");
if (root) {
for (pugi::xml_node command = root.child("command"); command;
command = command.next_sibling("command")) {
std::string tocall = command.text().get();
LOG(LogInfo) << " " << tocall;
std::cout << "==============================================\n"
"input config finish command:\n";
int exitCode = Utils::Platform::runSystemCommand(tocall);
std::cout << "==============================================\n";
if (exitCode != 0) {
LOG(LogWarning) << "...launch terminated with nonzero exit code "
<< exitCode << "!";
}
}
}
}
}
}
}
std::string InputManager::getConfigPath()
{
std::string path = Utils::FileSystem::getHomePath();
path += "/.emulationstation/es_input.xml";
return path;
}
std::string InputManager::getTemporaryConfigPath()
{
std::string path = Utils::FileSystem::getHomePath();
path += "/.emulationstation/es_temporaryinput.xml";
return path;
}
int InputManager::getNumConfiguredDevices()
{
int num = 0;
for (auto it = mInputConfigs.cbegin(); it != mInputConfigs.cend(); ++it)
if (it->second->isConfigured())
++num;
if (mKeyboardInputConfig->isConfigured())
++num;
if (mCECInputConfig->isConfigured())
++num;
return num;
}
int InputManager::getAxisCountByDevice(SDL_JoystickID id)
{
return SDL_JoystickNumAxes(mJoysticks[id]);
}
int InputManager::getButtonCountByDevice(SDL_JoystickID id)
{
if (id == DEVICE_KEYBOARD)
return -1;
else if (id == DEVICE_CEC)
#if defined(HAVE_CECLIB)
return CEC::CEC_USER_CONTROL_CODE_MAX;
#else
return 0;
#endif
else
return SDL_JoystickNumButtons(mJoysticks[id]);
}
std::string InputManager::getDeviceGUIDString(int deviceId)
{
if (deviceId == DEVICE_KEYBOARD)
return KEYBOARD_GUID_STRING;
if (deviceId == DEVICE_CEC)
return CEC_GUID_STRING;
auto it = mJoysticks.find(deviceId);
if (it == mJoysticks.cend()) {
LOG(LogError) << "getDeviceGUIDString - deviceId " << deviceId << " not found!";
return "Something went horribly wrong";
}
char guid[65];
SDL_JoystickGetGUIDString(SDL_JoystickGetGUID(it->second), guid, 65);
return std::string(guid);
}
InputConfig* InputManager::getInputConfigByDevice(int device)
{
if (device == DEVICE_KEYBOARD)
return mKeyboardInputConfig.get();
else if (device == DEVICE_CEC)
return mCECInputConfig.get();
else
return mInputConfigs[device].get();
}
bool InputManager::parseEvent(const SDL_Event& event)
{
bool causedEvent {false};
int32_t axisValue {0};
switch (event.type) {
case SDL_CONTROLLERAXISMOTION: {
// Whether to only accept input from the first controller.
if (Settings::getInstance()->getBool("InputOnlyFirstController"))
if (mInputConfigs.begin()->first != event.cdevice.which)
return false;
// This is needed for a situation which sometimes occur when a game is launched,
// some axis input is generated and then the controller is disconnected before
// leaving the game. In this case, events for the old device index could be received
// when returning from the game. If this happens we simply delete the configuration
// map entry.
if (!mInputConfigs[event.caxis.which]) {
auto it = mInputConfigs.find(event.cdevice.which);
mInputConfigs.erase(it);
return false;
}
axisValue = event.caxis.value;
int deadzone = 0;
if (event.caxis.axis == SDL_CONTROLLER_AXIS_TRIGGERLEFT ||
event.caxis.axis == SDL_CONTROLLER_AXIS_TRIGGERRIGHT) {
deadzone = DEADZONE_TRIGGERS;
}
else {
deadzone = DEADZONE_THUMBSTICKS;
}
// Check if the input value switched boundaries.
if ((abs(axisValue) > deadzone) !=
(abs(mPrevAxisValues[std::make_pair(event.caxis.which, event.caxis.axis)]) >
deadzone)) {
int normValue;
if (abs(axisValue) <= deadzone) {
normValue = 0;
}
else {
if (axisValue > 0)
normValue = 1;
else
normValue = -1;
}
mWindow->input(
getInputConfigByDevice(event.caxis.which),
Input(event.caxis.which, TYPE_AXIS, event.caxis.axis, normValue, false));
causedEvent = true;
}
mPrevAxisValues[std::make_pair(event.caxis.which, event.caxis.axis)] = axisValue;
return causedEvent;
}
case SDL_CONTROLLERBUTTONDOWN: {
}
case SDL_CONTROLLERBUTTONUP: {
// Whether to only accept input from the first controller.
if (Settings::getInstance()->getBool("InputOnlyFirstController"))
if (mInputConfigs.begin()->first != event.cdevice.which)
return false;
// The event filtering below is required as some controllers send button presses
// starting with the state 0 when using the D-pad. I consider this invalid behavior
// and the more popular controllers such as those from Microsoft and Sony do not show
// this strange behavior.
int buttonState =
mPrevButtonValues[std::make_pair(event.cbutton.which, event.cbutton.button)];
if ((buttonState == -1 || buttonState == 0) && event.cbutton.state == 0)
return false;
mPrevButtonValues[std::make_pair(event.cbutton.which, event.cbutton.button)] =
event.cbutton.state;
mWindow->input(getInputConfigByDevice(event.cbutton.which),
Input(event.cbutton.which, TYPE_BUTTON, event.cbutton.button,
event.cbutton.state == SDL_PRESSED, false));
return true;
}
case SDL_KEYDOWN: {
if (event.key.keysym.sym == SDLK_BACKSPACE && SDL_IsTextInputActive())
mWindow->textInput("\b");
if (event.key.repeat)
return false;
// There is no need to handle the OS-default quit shortcut (Alt + F4 on Windows and
// Linux and Command + Q on macOS) as that's taken care of by the window manager.
std::string quitShortcut {Settings::getInstance()->getString("KeyboardQuitShortcut")};
#if defined(__APPLE__)
if (quitShortcut != "CmdQ") {
#else
if (quitShortcut != "AltF4") {
#endif
bool quitES {false};
if (quitShortcut == "F4" && event.key.keysym.sym == SDLK_F4 &&
!(event.key.keysym.mod & KMOD_LALT))
quitES = true;
else if (quitShortcut == "CtrlQ" && event.key.keysym.sym == SDLK_q &&
event.key.keysym.mod & KMOD_CTRL)
quitES = true;
else if (quitShortcut == "AltQ" && event.key.keysym.sym == SDLK_q &&
event.key.keysym.mod & KMOD_LALT)
quitES = true;
if (quitES) {
SDL_Event quit;
quit.type = SDL_QUIT;
SDL_PushEvent(&quit);
return false;
}
}
if (Settings::getInstance()->getBool("InputIgnoreKeyboard"))
return true;
mWindow->input(getInputConfigByDevice(DEVICE_KEYBOARD),
Input(DEVICE_KEYBOARD, TYPE_KEY, event.key.keysym.sym, 1, false));
return true;
}
case SDL_KEYUP: {
if (Settings::getInstance()->getBool("InputIgnoreKeyboard"))
return true;
mWindow->input(getInputConfigByDevice(DEVICE_KEYBOARD),
Input(DEVICE_KEYBOARD, TYPE_KEY, event.key.keysym.sym, 0, false));
return true;
}
case SDL_TEXTINPUT: {
mWindow->textInput(event.text.text);
break;
}
case SDL_CONTROLLERDEVICEADDED: {
addControllerByDeviceIndex(mWindow, event.cdevice.which);
return true;
}
case SDL_CONTROLLERDEVICEREMOVED: {
removeControllerByJoystickID(mWindow, event.cdevice.which);
return false;
}
}
if ((event.type == static_cast<unsigned int>(SDL_USER_CECBUTTONDOWN)) ||
(event.type == static_cast<unsigned int>(SDL_USER_CECBUTTONUP))) {
mWindow->input(getInputConfigByDevice(DEVICE_CEC),
Input(DEVICE_CEC, TYPE_CEC_BUTTON, event.user.code,
event.type == static_cast<unsigned int>(SDL_USER_CECBUTTONDOWN),
false));
return true;
}
return false;
}
bool InputManager::loadInputConfig(InputConfig* config)
{
if (!mConfigFileExists)
return false;
std::string path = getConfigPath();
pugi::xml_document doc;
#if defined(_WIN64)
pugi::xml_parse_result res = doc.load_file(Utils::String::stringToWideString(path).c_str());
#else
pugi::xml_parse_result res = doc.load_file(path.c_str());
#endif
if (!res) {
LOG(LogError) << "Couldn't parse the input configuration file: " << res.description();
return false;
}
pugi::xml_node root = doc.child("inputList");
if (!root)
return false;
pugi::xml_node configNode = root.find_child_by_attribute("inputConfig", "deviceGUID",
config->getDeviceGUIDString().c_str());
// Enabling this will match an entry in es_input.xml based on the device name if there
// was no GUID match. This is probably not a good idea as many controllers share the same
// name even though the GUID differ and potentially the button configuration could be
// different between them. Keeping the code for now though.
// if (!configNode)
// configNode = root.find_child_by_attribute("inputConfig",
// "deviceName", config->getDeviceName().c_str());
// With the move to the SDL GameController API the button layout changed quite a lot, so
// es_input.xml files generated using the old API will end up with a completely unusable
// controller configuration. These older files had the configuration entry type set to
// "joystick", so it's easy to ignore such entries by only accepting entries with the
// type set to "controller" (which is now applied when saving the es_input.xml file).
if (configNode && config->getDeviceName() != "Keyboard")
if (!root.find_child_by_attribute("inputConfig", "type", "controller"))
return false;
if (!configNode)
return false;
config->loadFromXML(configNode);
return true;
}
void InputManager::loadDefaultKBConfig()
{
InputConfig* cfg = getInputConfigByDevice(DEVICE_KEYBOARD);
if (cfg->isConfigured())
return;
cfg->clear();
cfg->mapInput("Up", Input(DEVICE_KEYBOARD, TYPE_KEY, SDLK_UP, 1, true));
cfg->mapInput("Down", Input(DEVICE_KEYBOARD, TYPE_KEY, SDLK_DOWN, 1, true));
cfg->mapInput("Left", Input(DEVICE_KEYBOARD, TYPE_KEY, SDLK_LEFT, 1, true));
cfg->mapInput("Right", Input(DEVICE_KEYBOARD, TYPE_KEY, SDLK_RIGHT, 1, true));
cfg->mapInput("A", Input(DEVICE_KEYBOARD, TYPE_KEY, SDLK_RETURN, 1, true));
cfg->mapInput("B", Input(DEVICE_KEYBOARD, TYPE_KEY, SDLK_BACKSPACE, 1, true));
cfg->mapInput("X", Input(DEVICE_KEYBOARD, TYPE_KEY, SDLK_DELETE, 1, true));
#if defined(__APPLE__)
cfg->mapInput("Y", Input(DEVICE_KEYBOARD, TYPE_KEY, SDLK_PRINTSCREEN, 1, true));
#else
cfg->mapInput("Y", Input(DEVICE_KEYBOARD, TYPE_KEY, SDLK_INSERT, 1, true));
#endif
cfg->mapInput("Start", Input(DEVICE_KEYBOARD, TYPE_KEY, SDLK_ESCAPE, 1, true));
cfg->mapInput("Back", Input(DEVICE_KEYBOARD, TYPE_KEY, SDLK_F1, 1, true));
cfg->mapInput("LeftShoulder", Input(DEVICE_KEYBOARD, TYPE_KEY, SDLK_PAGEUP, 1, true));
cfg->mapInput("RightShoulder", Input(DEVICE_KEYBOARD, TYPE_KEY, SDLK_PAGEDOWN, 1, true));
cfg->mapInput("LeftTrigger", Input(DEVICE_KEYBOARD, TYPE_KEY, SDLK_HOME, 1, true));
cfg->mapInput("RightTrigger", Input(DEVICE_KEYBOARD, TYPE_KEY, SDLK_END, 1, true));
cfg->mapInput("LeftThumbstickClick", Input(DEVICE_KEYBOARD, TYPE_KEY, SDLK_F2, 1, true));
cfg->mapInput("RightThumbstickClick", Input(DEVICE_KEYBOARD, TYPE_KEY, SDLK_F3, 1, true));
}
void InputManager::loadDefaultControllerConfig(SDL_JoystickID deviceIndex)
{
InputConfig* cfg = getInputConfigByDevice(deviceIndex);
if (cfg->isConfigured())
return;
// clang-format off
cfg->mapInput("Up", Input(deviceIndex, TYPE_BUTTON, SDL_CONTROLLER_BUTTON_DPAD_UP, 1, true));
cfg->mapInput("Down", Input(deviceIndex, TYPE_BUTTON, SDL_CONTROLLER_BUTTON_DPAD_DOWN, 1, true));
cfg->mapInput("Left", Input(deviceIndex, TYPE_BUTTON, SDL_CONTROLLER_BUTTON_DPAD_LEFT, 1, true));
cfg->mapInput("Right", Input(deviceIndex, TYPE_BUTTON, SDL_CONTROLLER_BUTTON_DPAD_RIGHT, 1, true));
cfg->mapInput("Start", Input(deviceIndex, TYPE_BUTTON, SDL_CONTROLLER_BUTTON_START, 1, true));
cfg->mapInput("Back", Input(deviceIndex, TYPE_BUTTON, SDL_CONTROLLER_BUTTON_BACK, 1, true));
cfg->mapInput("A", Input(deviceIndex, TYPE_BUTTON, SDL_CONTROLLER_BUTTON_A, 1, true));
cfg->mapInput("B", Input(deviceIndex, TYPE_BUTTON, SDL_CONTROLLER_BUTTON_B, 1, true));
cfg->mapInput("X", Input(deviceIndex, TYPE_BUTTON, SDL_CONTROLLER_BUTTON_X, 1, true));
cfg->mapInput("Y", Input(deviceIndex, TYPE_BUTTON, SDL_CONTROLLER_BUTTON_Y, 1, true));
cfg->mapInput("LeftShoulder", Input(deviceIndex, TYPE_BUTTON, SDL_CONTROLLER_BUTTON_LEFTSHOULDER, 1, true));
cfg->mapInput("RightShoulder", Input(deviceIndex, TYPE_BUTTON, SDL_CONTROLLER_BUTTON_RIGHTSHOULDER, 1, true));
cfg->mapInput("LeftTrigger", Input(deviceIndex, TYPE_AXIS, SDL_CONTROLLER_AXIS_TRIGGERLEFT, 1, true));
cfg->mapInput("RightTrigger", Input(deviceIndex, TYPE_AXIS, SDL_CONTROLLER_AXIS_TRIGGERRIGHT, 1, true));
cfg->mapInput("LeftThumbstickUp", Input(deviceIndex, TYPE_AXIS, SDL_CONTROLLER_AXIS_LEFTY, -1, true));
cfg->mapInput("LeftThumbstickDown", Input(deviceIndex, TYPE_AXIS, SDL_CONTROLLER_AXIS_LEFTY, 1, true));
cfg->mapInput("LeftThumbstickLeft", Input(deviceIndex, TYPE_AXIS, SDL_CONTROLLER_AXIS_LEFTX, -1, true));
cfg->mapInput("LeftThumbstickRight", Input(deviceIndex, TYPE_AXIS, SDL_CONTROLLER_AXIS_LEFTX, 1, true));
cfg->mapInput("LeftThumbstickClick", Input(deviceIndex, TYPE_BUTTON, SDL_CONTROLLER_BUTTON_LEFTSTICK, 1, true));
cfg->mapInput("RightThumbstickUp", Input(deviceIndex, TYPE_AXIS, SDL_CONTROLLER_AXIS_RIGHTY, -1, true));
cfg->mapInput("RightThumbstickDown", Input(deviceIndex, TYPE_AXIS, SDL_CONTROLLER_AXIS_RIGHTY, 1, true));
cfg->mapInput("RightThumbstickLeft", Input(deviceIndex, TYPE_AXIS, SDL_CONTROLLER_AXIS_RIGHTX, -1, true));
cfg->mapInput("RightThumbstickRight", Input(deviceIndex, TYPE_AXIS, SDL_CONTROLLER_AXIS_RIGHTX, 1, true));
cfg->mapInput("RightThumbstickClick", Input(deviceIndex, TYPE_BUTTON, SDL_CONTROLLER_BUTTON_RIGHTSTICK, 1, true));
// clang-format on
}
void InputManager::addControllerByDeviceIndex(Window* window, int deviceIndex)
{
// Open joystick and add it to our list.
SDL_GameController* controller = SDL_GameControllerOpen(deviceIndex);
if (controller == nullptr) {
LOG(LogError) << "Couldn't add controller with device index " << deviceIndex;
return;
}
SDL_Joystick* joy = SDL_GameControllerGetJoystick(controller);
// Add it to our list so we can close it again later.
SDL_JoystickID joyID = SDL_JoystickInstanceID(joy);
mJoysticks[joyID] = joy;
mControllers[joyID] = controller;
char guid[65];
SDL_JoystickGetGUIDString(SDL_JoystickGetGUID(joy), guid, 65);
mInputConfigs[joyID] =
std::make_unique<InputConfig>(joyID, SDL_GameControllerName(mControllers[joyID]), guid);
bool customConfig = loadInputConfig(mInputConfigs[joyID].get());
if (customConfig) {
LOG(LogInfo) << "Added controller with custom configuration: \""
<< SDL_GameControllerName(mControllers[joyID]) << "\" (GUID: " << guid
<< ", instance ID: " << joyID << ", device index: " << deviceIndex << ")";
}
else {
loadDefaultControllerConfig(joyID);
LOG(LogInfo) << "Added controller with default configuration: \""
<< SDL_GameControllerName(mControllers[joyID]) << "\" (GUID: " << guid
<< ", instance ID: " << joyID << ", device index: " << deviceIndex << ")";
}
if (window != nullptr) {
window->queueInfoPopup(
"ADDED INPUT DEVICE '" +
Utils::String::toUpper(std::string(SDL_GameControllerName(mControllers[joyID]))) +
"'",
4000);
}
int numAxes = SDL_JoystickNumAxes(joy);
int numButtons = SDL_JoystickNumButtons(joy);
for (int axis = 0; axis < numAxes; ++axis)
mPrevAxisValues[std::make_pair(joyID, axis)] = 0;
for (int button = 0; button < numButtons; ++button)
mPrevButtonValues[std::make_pair(joyID, button)] = -1;
}
void InputManager::removeControllerByJoystickID(Window* window, SDL_JoystickID joyID)
{
assert(joyID != -1);
char guid[65];
SDL_Joystick* joy = SDL_JoystickFromInstanceID(joyID);
SDL_JoystickGetGUIDString(SDL_JoystickGetGUID(joy), guid, 65);
LOG(LogInfo) << "Removed controller \"" << SDL_GameControllerName(mControllers[joyID])
<< "\" (GUID: " << guid << ", instance ID: " << joyID << ")";
if (window != nullptr) {
window->queueInfoPopup(
"REMOVED INPUT DEVICE '" +
Utils::String::toUpper(std::string(SDL_GameControllerName(mControllers[joyID]))) +
"'",
4000);
}
// Delete mPrevAxisValues for the device.
int axisEntries = static_cast<int>(mPrevAxisValues.size());
for (int i = 0; i < axisEntries; ++i) {
auto entry = mPrevAxisValues.find(std::make_pair(joyID, i));
if (entry != mPrevAxisValues.end()) {
mPrevAxisValues.erase(entry);
}
}
// Delete mPrevButtonValues for the device.
int buttonEntries = static_cast<int>(mPrevButtonValues.size());
for (int i = 0; i < buttonEntries; ++i) {
auto entry = mPrevButtonValues.find(std::make_pair(joyID, i));
if (entry != mPrevButtonValues.end()) {
mPrevButtonValues.erase(entry);
}
}
auto it = mInputConfigs.find(joyID);
mInputConfigs.erase(it);
// Close the controller and remove its entry.
auto controllerIt = mControllers.find(joyID);
if (controllerIt != mControllers.cend()) {
SDL_GameControllerClose(controllerIt->second);
mControllers.erase(controllerIt);
}
else {
LOG(LogError) << "Couldn't find controller to close (instance ID: " << joyID << ")";
}
// Remove the joystick entry.
auto joystickIt = mJoysticks.find(joyID);
if (joystickIt != mJoysticks.cend()) {
mJoysticks.erase(joystickIt);
}
else {
LOG(LogError) << "Couldn't find joystick entry to remove (instance ID: " << joyID << ")";
}
}
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