135 lines
4.3 KiB
C++
135 lines
4.3 KiB
C++
// Copyright 2017 Citra Emulator Project
|
|
// Licensed under GPLv2 or any later version
|
|
// Refer to the license.txt file included.
|
|
|
|
#pragma once
|
|
|
|
#include <memory>
|
|
#include <string>
|
|
#include <tuple>
|
|
#include <unordered_map>
|
|
#include <utility>
|
|
#include "common/logging/log.h"
|
|
#include "common/param_package.h"
|
|
#include "common/vector_math.h"
|
|
|
|
namespace Input {
|
|
|
|
/// An abstract class template for an input device (a button, an analog input, etc.).
|
|
template <typename StatusType>
|
|
class InputDevice {
|
|
public:
|
|
virtual ~InputDevice() = default;
|
|
virtual StatusType GetStatus() const {
|
|
return {};
|
|
}
|
|
};
|
|
|
|
/// An abstract class template for a factory that can create input devices.
|
|
template <typename InputDeviceType>
|
|
class Factory {
|
|
public:
|
|
virtual ~Factory() = default;
|
|
virtual std::unique_ptr<InputDeviceType> Create(const Common::ParamPackage&) = 0;
|
|
};
|
|
|
|
namespace Impl {
|
|
|
|
template <typename InputDeviceType>
|
|
using FactoryListType = std::unordered_map<std::string, std::shared_ptr<Factory<InputDeviceType>>>;
|
|
|
|
template <typename InputDeviceType>
|
|
struct FactoryList {
|
|
static FactoryListType<InputDeviceType> list;
|
|
};
|
|
|
|
template <typename InputDeviceType>
|
|
FactoryListType<InputDeviceType> FactoryList<InputDeviceType>::list;
|
|
|
|
} // namespace Impl
|
|
|
|
/**
|
|
* Registers an input device factory.
|
|
* @tparam InputDeviceType the type of input devices the factory can create
|
|
* @param name the name of the factory. Will be used to match the "engine" parameter when creating
|
|
* a device
|
|
* @param factory the factory object to register
|
|
*/
|
|
template <typename InputDeviceType>
|
|
void RegisterFactory(const std::string& name, std::shared_ptr<Factory<InputDeviceType>> factory) {
|
|
auto pair = std::make_pair(name, std::move(factory));
|
|
if (!Impl::FactoryList<InputDeviceType>::list.insert(std::move(pair)).second) {
|
|
LOG_ERROR(Input, "Factory %s already registered", name.c_str());
|
|
}
|
|
}
|
|
|
|
/**
|
|
* Unregisters an input device factory.
|
|
* @tparam InputDeviceType the type of input devices the factory can create
|
|
* @param name the name of the factory to unregister
|
|
*/
|
|
template <typename InputDeviceType>
|
|
void UnregisterFactory(const std::string& name) {
|
|
if (Impl::FactoryList<InputDeviceType>::list.erase(name) == 0) {
|
|
LOG_ERROR(Input, "Factory %s not registered", name.c_str());
|
|
}
|
|
}
|
|
|
|
/**
|
|
* Create an input device from given paramters.
|
|
* @tparam InputDeviceType the type of input devices to create
|
|
* @param params a serialized ParamPackage string contains all parameters for creating the device
|
|
*/
|
|
template <typename InputDeviceType>
|
|
std::unique_ptr<InputDeviceType> CreateDevice(const std::string& params) {
|
|
const Common::ParamPackage package(params);
|
|
const std::string engine = package.Get("engine", "null");
|
|
const auto& factory_list = Impl::FactoryList<InputDeviceType>::list;
|
|
const auto pair = factory_list.find(engine);
|
|
if (pair == factory_list.end()) {
|
|
if (engine != "null") {
|
|
LOG_ERROR(Input, "Unknown engine name: %s", engine.c_str());
|
|
}
|
|
return std::make_unique<InputDeviceType>();
|
|
}
|
|
return pair->second->Create(package);
|
|
}
|
|
|
|
/**
|
|
* A button device is an input device that returns bool as status.
|
|
* true for pressed; false for released.
|
|
*/
|
|
using ButtonDevice = InputDevice<bool>;
|
|
|
|
/**
|
|
* An analog device is an input device that returns a tuple of x and y coordinates as status. The
|
|
* coordinates are within the unit circle. x+ is defined as right direction, and y+ is defined as up
|
|
* direction
|
|
*/
|
|
using AnalogDevice = InputDevice<std::tuple<float, float>>;
|
|
|
|
/**
|
|
* A motion device is an input device that returns a tuple of accelerometer state vector and
|
|
* gyroscope state vector.
|
|
*
|
|
* For both vectors:
|
|
* x+ is the same direction as LEFT on D-pad.
|
|
* y+ is normal to the touch screen, pointing outward.
|
|
* z+ is the same direction as UP on D-pad.
|
|
*
|
|
* For accelerometer state vector
|
|
* Units: g (gravitational acceleration)
|
|
*
|
|
* For gyroscope state vector:
|
|
* Orientation is determined by right-hand rule.
|
|
* Units: deg/sec
|
|
*/
|
|
using MotionDevice = InputDevice<std::tuple<Math::Vec3<float>, Math::Vec3<float>>>;
|
|
|
|
/**
|
|
* A touch device is an input device that returns a tuple of two floats and a bool. The floats are
|
|
* x and y coordinates in the range 0.0 - 1.0, and the bool indicates whether it is pressed.
|
|
*/
|
|
using TouchDevice = InputDevice<std::tuple<float, float, bool>>;
|
|
|
|
} // namespace Input
|