InputCommon: add SDL joystick support
This commit is contained in:
parent
a6bd7917cb
commit
51b1c1f211
@ -10,8 +10,18 @@ set(HEADERS
|
|||||||
main.h
|
main.h
|
||||||
)
|
)
|
||||||
|
|
||||||
|
if(SDL2_FOUND)
|
||||||
|
set(SRCS ${SRCS} sdl/sdl.cpp)
|
||||||
|
set(HEADERS ${HEADERS} sdl/sdl.h)
|
||||||
|
include_directories(${SDL2_INCLUDE_DIR})
|
||||||
|
endif()
|
||||||
|
|
||||||
create_directory_groups(${SRCS} ${HEADERS})
|
create_directory_groups(${SRCS} ${HEADERS})
|
||||||
|
|
||||||
add_library(input_common STATIC ${SRCS} ${HEADERS})
|
add_library(input_common STATIC ${SRCS} ${HEADERS})
|
||||||
target_link_libraries(input_common common core)
|
target_link_libraries(input_common common core)
|
||||||
|
|
||||||
|
if(SDL2_FOUND)
|
||||||
|
target_link_libraries(input_common ${SDL2_LIBRARY})
|
||||||
|
set_property(TARGET input_common APPEND PROPERTY COMPILE_DEFINITIONS HAVE_SDL2)
|
||||||
|
endif()
|
||||||
|
@ -7,6 +7,9 @@
|
|||||||
#include "input_common/analog_from_button.h"
|
#include "input_common/analog_from_button.h"
|
||||||
#include "input_common/keyboard.h"
|
#include "input_common/keyboard.h"
|
||||||
#include "input_common/main.h"
|
#include "input_common/main.h"
|
||||||
|
#ifdef HAVE_SDL2
|
||||||
|
#include "input_common/sdl/sdl.h"
|
||||||
|
#endif
|
||||||
|
|
||||||
namespace InputCommon {
|
namespace InputCommon {
|
||||||
|
|
||||||
@ -17,12 +20,19 @@ void Init() {
|
|||||||
Input::RegisterFactory<Input::ButtonDevice>("keyboard", keyboard);
|
Input::RegisterFactory<Input::ButtonDevice>("keyboard", keyboard);
|
||||||
Input::RegisterFactory<Input::AnalogDevice>("analog_from_button",
|
Input::RegisterFactory<Input::AnalogDevice>("analog_from_button",
|
||||||
std::make_shared<InputCommon::AnalogFromButton>());
|
std::make_shared<InputCommon::AnalogFromButton>());
|
||||||
|
#ifdef HAVE_SDL2
|
||||||
|
SDL::Init();
|
||||||
|
#endif
|
||||||
}
|
}
|
||||||
|
|
||||||
void Shutdown() {
|
void Shutdown() {
|
||||||
Input::UnregisterFactory<Input::ButtonDevice>("keyboard");
|
Input::UnregisterFactory<Input::ButtonDevice>("keyboard");
|
||||||
keyboard.reset();
|
keyboard.reset();
|
||||||
Input::UnregisterFactory<Input::AnalogDevice>("analog_from_button");
|
Input::UnregisterFactory<Input::AnalogDevice>("analog_from_button");
|
||||||
|
|
||||||
|
#ifdef HAVE_SDL2
|
||||||
|
SDL::Shutdown();
|
||||||
|
#endif
|
||||||
}
|
}
|
||||||
|
|
||||||
Keyboard* GetKeyboard() {
|
Keyboard* GetKeyboard() {
|
||||||
|
202
src/input_common/sdl/sdl.cpp
Normal file
202
src/input_common/sdl/sdl.cpp
Normal file
@ -0,0 +1,202 @@
|
|||||||
|
// Copyright 2017 Citra Emulator Project
|
||||||
|
// Licensed under GPLv2 or any later version
|
||||||
|
// Refer to the license.txt file included.
|
||||||
|
|
||||||
|
#include <cmath>
|
||||||
|
#include <memory>
|
||||||
|
#include <string>
|
||||||
|
#include <tuple>
|
||||||
|
#include <unordered_map>
|
||||||
|
#include <SDL.h>
|
||||||
|
#include "common/math_util.h"
|
||||||
|
#include "input_common/sdl/sdl.h"
|
||||||
|
|
||||||
|
namespace InputCommon {
|
||||||
|
|
||||||
|
namespace SDL {
|
||||||
|
|
||||||
|
class SDLJoystick;
|
||||||
|
class SDLButtonFactory;
|
||||||
|
class SDLAnalogFactory;
|
||||||
|
static std::unordered_map<int, std::weak_ptr<SDLJoystick>> joystick_list;
|
||||||
|
static std::shared_ptr<SDLButtonFactory> button_factory;
|
||||||
|
static std::shared_ptr<SDLAnalogFactory> analog_factory;
|
||||||
|
|
||||||
|
static bool initialized = false;
|
||||||
|
|
||||||
|
class SDLJoystick {
|
||||||
|
public:
|
||||||
|
explicit SDLJoystick(int joystick_index)
|
||||||
|
: joystick{SDL_JoystickOpen(joystick_index), SDL_JoystickClose} {
|
||||||
|
if (!joystick) {
|
||||||
|
LOG_ERROR(Input, "failed to open joystick %d", joystick_index);
|
||||||
|
}
|
||||||
|
}
|
||||||
|
|
||||||
|
bool GetButton(int button) const {
|
||||||
|
if (!joystick)
|
||||||
|
return {};
|
||||||
|
SDL_JoystickUpdate();
|
||||||
|
return SDL_JoystickGetButton(joystick.get(), button) == 1;
|
||||||
|
}
|
||||||
|
|
||||||
|
std::tuple<float, float> GetAnalog(int axis_x, int axis_y) const {
|
||||||
|
if (!joystick)
|
||||||
|
return {};
|
||||||
|
SDL_JoystickUpdate();
|
||||||
|
float x = SDL_JoystickGetAxis(joystick.get(), axis_x) / 32767.0f;
|
||||||
|
float y = SDL_JoystickGetAxis(joystick.get(), axis_y) / 32767.0f;
|
||||||
|
y = -y; // 3DS uses an y-axis inverse from SDL
|
||||||
|
|
||||||
|
// Make sure the coordinates are in the unit circle,
|
||||||
|
// otherwise normalize it.
|
||||||
|
float r = x * x + y * y;
|
||||||
|
if (r > 1.0f) {
|
||||||
|
r = std::sqrt(r);
|
||||||
|
x /= r;
|
||||||
|
y /= r;
|
||||||
|
}
|
||||||
|
|
||||||
|
return std::make_tuple(x, y);
|
||||||
|
}
|
||||||
|
|
||||||
|
bool GetHatDirection(int hat, Uint8 direction) const {
|
||||||
|
return (SDL_JoystickGetHat(joystick.get(), hat) & direction) != 0;
|
||||||
|
}
|
||||||
|
|
||||||
|
private:
|
||||||
|
std::unique_ptr<SDL_Joystick, decltype(&SDL_JoystickClose)> joystick;
|
||||||
|
};
|
||||||
|
|
||||||
|
class SDLButton final : public Input::ButtonDevice {
|
||||||
|
public:
|
||||||
|
explicit SDLButton(std::shared_ptr<SDLJoystick> joystick_, int button_)
|
||||||
|
: joystick(joystick_), button(button_) {}
|
||||||
|
|
||||||
|
bool GetStatus() const override {
|
||||||
|
return joystick->GetButton(button);
|
||||||
|
}
|
||||||
|
|
||||||
|
private:
|
||||||
|
std::shared_ptr<SDLJoystick> joystick;
|
||||||
|
int button;
|
||||||
|
};
|
||||||
|
|
||||||
|
class SDLDirectionButton final : public Input::ButtonDevice {
|
||||||
|
public:
|
||||||
|
explicit SDLDirectionButton(std::shared_ptr<SDLJoystick> joystick_, int hat_, Uint8 direction_)
|
||||||
|
: joystick(joystick_), hat(hat_), direction(direction_) {}
|
||||||
|
|
||||||
|
bool GetStatus() const override {
|
||||||
|
return joystick->GetHatDirection(hat, direction);
|
||||||
|
}
|
||||||
|
|
||||||
|
private:
|
||||||
|
std::shared_ptr<SDLJoystick> joystick;
|
||||||
|
int hat;
|
||||||
|
Uint8 direction;
|
||||||
|
};
|
||||||
|
|
||||||
|
class SDLAnalog final : public Input::AnalogDevice {
|
||||||
|
public:
|
||||||
|
SDLAnalog(std::shared_ptr<SDLJoystick> joystick_, int axis_x_, int axis_y_)
|
||||||
|
: joystick(joystick_), axis_x(axis_x_), axis_y(axis_y_) {}
|
||||||
|
|
||||||
|
std::tuple<float, float> GetStatus() const override {
|
||||||
|
return joystick->GetAnalog(axis_x, axis_y);
|
||||||
|
}
|
||||||
|
|
||||||
|
private:
|
||||||
|
std::shared_ptr<SDLJoystick> joystick;
|
||||||
|
int axis_x;
|
||||||
|
int axis_y;
|
||||||
|
};
|
||||||
|
|
||||||
|
static std::shared_ptr<SDLJoystick> GetJoystick(int joystick_index) {
|
||||||
|
std::shared_ptr<SDLJoystick> joystick = joystick_list[joystick_index].lock();
|
||||||
|
if (!joystick) {
|
||||||
|
joystick = std::make_shared<SDLJoystick>(joystick_index);
|
||||||
|
joystick_list[joystick_index] = joystick;
|
||||||
|
}
|
||||||
|
return joystick;
|
||||||
|
}
|
||||||
|
|
||||||
|
/// A button device factory that creates button devices from SDL joystick
|
||||||
|
class SDLButtonFactory final : public Input::Factory<Input::ButtonDevice> {
|
||||||
|
public:
|
||||||
|
/**
|
||||||
|
* Creates a button device from a joystick button
|
||||||
|
* @param params contains parameters for creating the device:
|
||||||
|
* - "joystick": the index of the joystick to bind
|
||||||
|
* - "button"(optional): the index of the button to bind
|
||||||
|
* - "hat"(optional): the index of the hat to bind as direction buttons
|
||||||
|
* - "direction"(only used for hat): the direction name of the hat to bind. Can be "up",
|
||||||
|
* "down", "left" or "right"
|
||||||
|
*/
|
||||||
|
std::unique_ptr<Input::ButtonDevice> Create(const Common::ParamPackage& params) override {
|
||||||
|
const int joystick_index = params.Get("joystick", 0);
|
||||||
|
|
||||||
|
if (params.Has("hat")) {
|
||||||
|
const int hat = params.Get("hat", 0);
|
||||||
|
const std::string direction_name = params.Get("direction", "");
|
||||||
|
Uint8 direction;
|
||||||
|
if (direction_name == "up") {
|
||||||
|
direction = SDL_HAT_UP;
|
||||||
|
} else if (direction_name == "down") {
|
||||||
|
direction = SDL_HAT_DOWN;
|
||||||
|
} else if (direction_name == "left") {
|
||||||
|
direction = SDL_HAT_LEFT;
|
||||||
|
} else if (direction_name == "right") {
|
||||||
|
direction = SDL_HAT_RIGHT;
|
||||||
|
} else {
|
||||||
|
direction = 0;
|
||||||
|
}
|
||||||
|
return std::make_unique<SDLDirectionButton>(GetJoystick(joystick_index), hat,
|
||||||
|
direction);
|
||||||
|
}
|
||||||
|
|
||||||
|
const int button = params.Get("button", 0);
|
||||||
|
return std::make_unique<SDLButton>(GetJoystick(joystick_index), button);
|
||||||
|
}
|
||||||
|
};
|
||||||
|
|
||||||
|
/// An analog device factory that creates analog devices from SDL joystick
|
||||||
|
class SDLAnalogFactory final : public Input::Factory<Input::AnalogDevice> {
|
||||||
|
public:
|
||||||
|
/**
|
||||||
|
* Creates analog device from joystick axes
|
||||||
|
* @param params contains parameters for creating the device:
|
||||||
|
* - "joystick": the index of the joystick to bind
|
||||||
|
* - "axis_x": the index of the axis to be bind as x-axis
|
||||||
|
* - "axis_y": the index of the axis to be bind as y-axis
|
||||||
|
*/
|
||||||
|
std::unique_ptr<Input::AnalogDevice> Create(const Common::ParamPackage& params) override {
|
||||||
|
const int joystick_index = params.Get("joystick", 0);
|
||||||
|
const int axis_x = params.Get("axis_x", 0);
|
||||||
|
const int axis_y = params.Get("axis_y", 1);
|
||||||
|
return std::make_unique<SDLAnalog>(GetJoystick(joystick_index), axis_x, axis_y);
|
||||||
|
}
|
||||||
|
};
|
||||||
|
|
||||||
|
void Init() {
|
||||||
|
if (SDL_Init(SDL_INIT_JOYSTICK) < 0) {
|
||||||
|
LOG_CRITICAL(Input, "SDL_Init(SDL_INIT_JOYSTICK) failed with: %s", SDL_GetError());
|
||||||
|
} else {
|
||||||
|
using namespace Input;
|
||||||
|
RegisterFactory<ButtonDevice>("sdl", std::make_shared<SDLButtonFactory>());
|
||||||
|
RegisterFactory<AnalogDevice>("sdl", std::make_shared<SDLAnalogFactory>());
|
||||||
|
initialized = true;
|
||||||
|
}
|
||||||
|
}
|
||||||
|
|
||||||
|
void Shutdown() {
|
||||||
|
if (initialized) {
|
||||||
|
using namespace Input;
|
||||||
|
UnregisterFactory<ButtonDevice>("sdl");
|
||||||
|
UnregisterFactory<AnalogDevice>("sdl");
|
||||||
|
SDL_QuitSubSystem(SDL_INIT_JOYSTICK);
|
||||||
|
}
|
||||||
|
}
|
||||||
|
|
||||||
|
} // namespace SDL
|
||||||
|
} // namespace InputCommon
|
19
src/input_common/sdl/sdl.h
Normal file
19
src/input_common/sdl/sdl.h
Normal file
@ -0,0 +1,19 @@
|
|||||||
|
// Copyright 2017 Citra Emulator Project
|
||||||
|
// Licensed under GPLv2 or any later version
|
||||||
|
// Refer to the license.txt file included.
|
||||||
|
|
||||||
|
#pragma once
|
||||||
|
|
||||||
|
#include "core/frontend/input.h"
|
||||||
|
|
||||||
|
namespace InputCommon {
|
||||||
|
namespace SDL {
|
||||||
|
|
||||||
|
/// Initializes and registers SDL device factories
|
||||||
|
void Init();
|
||||||
|
|
||||||
|
/// Unresisters SDL device factories and shut them down.
|
||||||
|
void Shutdown();
|
||||||
|
|
||||||
|
} // namespace SDL
|
||||||
|
} // namespace InputCommon
|
Loading…
Reference in New Issue
Block a user