dolphin/Source/Core/InputCommon/ControllerEmu/ControllerEmu.h

83 lines
2.9 KiB
C++

// Copyright 2010 Dolphin Emulator Project
// Licensed under GPLv2+
// Refer to the license.txt file included.
#pragma once
#include <cmath>
#include <memory>
#include <mutex>
#include <string>
#include <type_traits>
#include <vector>
#include "Common/Common.h"
#include "Common/IniFile.h"
#include "InputCommon/ControllerInterface/Device.h"
class ControllerInterface;
#define sign(x) ((x) ? (x) < 0 ? -1 : 1 : 0)
const char* const named_directions[] = {_trans("Up"), _trans("Down"), _trans("Left"),
_trans("Right")};
namespace ControllerEmu
{
class ControlGroup;
class EmulatedController
{
public:
virtual ~EmulatedController();
virtual std::string GetName() const = 0;
virtual void LoadDefaults(const ControllerInterface& ciface);
virtual void LoadConfig(IniFile::Section* sec, const std::string& base = "");
virtual void SaveConfig(IniFile::Section* sec, const std::string& base = "");
bool IsDefaultDeviceConnected() const;
const ciface::Core::DeviceQualifier& GetDefaultDevice() const;
void SetDefaultDevice(const std::string& device);
void SetDefaultDevice(ciface::Core::DeviceQualifier devq);
void UpdateReferences(const ControllerInterface& devi);
// This returns a lock that should be held before calling State() on any control
// references and GetState(), by extension. This prevents a race condition
// which happens while handling a hotplug event because a control reference's State()
// could be called before we have finished updating the reference.
static std::unique_lock<std::recursive_mutex> GetStateLock();
std::vector<std::unique_ptr<ControlGroup>> groups;
// Maps a float from -1.0..+1.0 to an integer of the provided values.
template <typename T, typename F>
static T MapFloat(F input_value, T zero_value, T neg_1_value = std::numeric_limits<T>::min(),
T pos_1_value = std::numeric_limits<T>::max())
{
static_assert(std::is_integral<T>(), "T is only sane for int types.");
static_assert(std::is_floating_point<F>(), "F is only sane for float types.");
static_assert(std::numeric_limits<long>::min() <= std::numeric_limits<T>::min() &&
std::numeric_limits<long>::max() >= std::numeric_limits<T>::max(),
"long is not a superset of T. use of std::lround is not sane.");
// Here we round when converting from float to int.
// After applying our deadzone, resizing, and reshaping math
// we sometimes have a near-zero value which is slightly negative. (e.g. -0.0001)
// Casting would round down but rounding will yield our "zero_value".
if (input_value > 0)
return T(std::lround((pos_1_value - zero_value) * input_value + zero_value));
else
return T(std::lround((zero_value - neg_1_value) * input_value + zero_value));
}
private:
ciface::Core::DeviceQualifier m_default_device;
bool m_default_device_is_connected{false};
};
} // namespace ControllerEmu