yaze 0.3.2
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Public Member Functions | Private Member Functions | Private Attributes | Static Private Attributes | List of all members
yaze::emu::input::SDL3InputBackend Class Reference

SDL3 input backend implementation. More...

#include <sdl3_input_backend.h>

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Public Member Functions

 SDL3InputBackend ()
 
 ~SDL3InputBackend () override
 
bool Initialize (const InputConfig &config) override
 Initialize the input backend.
 
void Shutdown () override
 Shutdown the input backend.
 
ControllerState Poll (int player=1) override
 Poll current input state (call every frame)
 
void ProcessEvent (void *event) override
 Process platform-specific events (optional)
 
InputConfig GetConfig () const override
 Get current configuration.
 
void SetConfig (const InputConfig &config) override
 Update configuration (hot-reload)
 
std::string GetBackendName () const override
 Get backend name for debugging.
 
bool IsInitialized () const override
 Check if backend is initialized.
 
- Public Member Functions inherited from yaze::emu::input::IInputBackend
virtual ~IInputBackend ()=default
 

Private Member Functions

void UpdateEventState (int keycode, bool pressed)
 Update event state from keyboard event.
 
void PollGamepad (ControllerState &state, int player)
 Poll gamepad state and update controller state.
 
void HandleGamepadEvent (const SDL_Event &event)
 Handle gamepad connection/disconnection.
 

Private Attributes

InputConfig config_
 
bool initialized_ = false
 
ControllerState event_state_
 
platform::GamepadHandle gamepads_ [4] = {nullptr, nullptr, nullptr, nullptr}
 

Static Private Attributes

static constexpr int16_t kAxisDeadzone = 8000
 

Detailed Description

SDL3 input backend implementation.

Implements the IInputBackend interface using SDL3 APIs. Key differences from SDL2:

  • SDL_GetKeyboardState() returns bool* instead of Uint8*
  • SDL_GameController is replaced with SDL_Gamepad
  • Event types use SDL_EVENT_* prefix instead of SDL_*
  • event.key.keysym.sym is replaced with event.key.key

Definition at line 21 of file sdl3_input_backend.h.

Constructor & Destructor Documentation

◆ SDL3InputBackend()

yaze::emu::input::SDL3InputBackend::SDL3InputBackend ( )
default

◆ ~SDL3InputBackend()

yaze::emu::input::SDL3InputBackend::~SDL3InputBackend ( )
override

Definition at line 12 of file sdl3_input_backend.cc.

References Shutdown().

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Member Function Documentation

◆ Initialize()

bool yaze::emu::input::SDL3InputBackend::Initialize ( const InputConfig & config)
overridevirtual

Initialize the input backend.

Implements yaze::emu::input::IInputBackend.

Definition at line 14 of file sdl3_input_backend.cc.

References yaze::emu::input::ApplyDefaultKeyBindings(), config_, yaze::emu::input::InputConfig::enable_gamepad, yaze::emu::input::InputConfig::gamepad_index, gamepads_, initialized_, LOG_INFO, LOG_WARN, and yaze::platform::OpenGamepad().

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◆ Shutdown()

void yaze::emu::input::SDL3InputBackend::Shutdown ( )
overridevirtual

Shutdown the input backend.

Implements yaze::emu::input::IInputBackend.

Definition at line 37 of file sdl3_input_backend.cc.

References yaze::platform::CloseGamepad(), gamepads_, initialized_, and LOG_INFO.

Referenced by ~SDL3InputBackend().

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◆ Poll()

ControllerState yaze::emu::input::SDL3InputBackend::Poll ( int player = 1)
overridevirtual

Poll current input state (call every frame)

Parameters
playerPlayer number (1-4)
Returns
Current controller state

Implements yaze::emu::input::IInputBackend.

Definition at line 51 of file sdl3_input_backend.cc.

References yaze::emu::input::A, yaze::emu::input::B, config_, yaze::emu::input::InputConfig::continuous_polling, yaze::emu::input::DOWN, yaze::emu::input::InputConfig::enable_gamepad, event_state_, yaze::emu::input::InputConfig::ignore_imgui_text_input, initialized_, yaze::platform::IsKeyPressed(), yaze::emu::input::InputConfig::key_a, yaze::emu::input::InputConfig::key_b, yaze::emu::input::InputConfig::key_down, yaze::emu::input::InputConfig::key_l, yaze::emu::input::InputConfig::key_left, yaze::emu::input::InputConfig::key_r, yaze::emu::input::InputConfig::key_right, yaze::emu::input::InputConfig::key_select, yaze::emu::input::InputConfig::key_start, yaze::emu::input::InputConfig::key_up, yaze::emu::input::InputConfig::key_x, yaze::emu::input::InputConfig::key_y, yaze::emu::input::L, yaze::emu::input::LEFT, PollGamepad(), yaze::emu::input::R, yaze::emu::input::RIGHT, yaze::emu::input::SELECT, yaze::emu::input::ControllerState::SetButton(), yaze::emu::input::START, yaze::emu::input::UP, yaze::emu::input::X, and yaze::emu::input::Y.

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◆ ProcessEvent()

void yaze::emu::input::SDL3InputBackend::ProcessEvent ( void * event)
overridevirtual

Process platform-specific events (optional)

Parameters
eventPlatform-specific event data (e.g., SDL_Event*)

Implements yaze::emu::input::IInputBackend.

Definition at line 198 of file sdl3_input_backend.cc.

References yaze::platform::GetKeyFromEvent(), HandleGamepadEvent(), initialized_, yaze::platform::kEventKeyDown, yaze::platform::kEventKeyUp, and UpdateEventState().

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◆ GetConfig()

InputConfig yaze::emu::input::SDL3InputBackend::GetConfig ( ) const
overridevirtual

Get current configuration.

Implements yaze::emu::input::IInputBackend.

Definition at line 299 of file sdl3_input_backend.cc.

References config_.

◆ SetConfig()

void yaze::emu::input::SDL3InputBackend::SetConfig ( const InputConfig & config)
overridevirtual

Update configuration (hot-reload)

Implements yaze::emu::input::IInputBackend.

Definition at line 301 of file sdl3_input_backend.cc.

References yaze::platform::CloseGamepad(), config_, yaze::emu::input::InputConfig::enable_gamepad, yaze::emu::input::InputConfig::gamepad_index, gamepads_, LOG_INFO, and yaze::platform::OpenGamepad().

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◆ GetBackendName()

std::string yaze::emu::input::SDL3InputBackend::GetBackendName ( ) const
overridevirtual

Get backend name for debugging.

Implements yaze::emu::input::IInputBackend.

Definition at line 316 of file sdl3_input_backend.cc.

◆ IsInitialized()

bool yaze::emu::input::SDL3InputBackend::IsInitialized ( ) const
overridevirtual

Check if backend is initialized.

Implements yaze::emu::input::IInputBackend.

Definition at line 318 of file sdl3_input_backend.cc.

References initialized_.

◆ UpdateEventState()

void yaze::emu::input::SDL3InputBackend::UpdateEventState ( int keycode,
bool pressed )
private

Update event state from keyboard event.

Parameters
keycodeThe keycode from the event
pressedWhether the key is pressed

Definition at line 271 of file sdl3_input_backend.cc.

References yaze::emu::input::A, yaze::emu::input::B, config_, yaze::emu::input::DOWN, event_state_, yaze::emu::input::InputConfig::key_a, yaze::emu::input::InputConfig::key_b, yaze::emu::input::InputConfig::key_down, yaze::emu::input::InputConfig::key_l, yaze::emu::input::InputConfig::key_left, yaze::emu::input::InputConfig::key_r, yaze::emu::input::InputConfig::key_right, yaze::emu::input::InputConfig::key_select, yaze::emu::input::InputConfig::key_start, yaze::emu::input::InputConfig::key_up, yaze::emu::input::InputConfig::key_x, yaze::emu::input::InputConfig::key_y, yaze::emu::input::L, yaze::emu::input::LEFT, yaze::emu::input::R, yaze::emu::input::RIGHT, yaze::emu::input::SELECT, yaze::emu::input::ControllerState::SetButton(), yaze::emu::input::START, yaze::emu::input::UP, yaze::emu::input::X, and yaze::emu::input::Y.

Referenced by ProcessEvent().

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◆ PollGamepad()

void yaze::emu::input::SDL3InputBackend::PollGamepad ( ControllerState & state,
int player )
private

Poll gamepad state and update controller state.

Parameters
stateThe controller state to update
playerThe player number (1-4)

Definition at line 133 of file sdl3_input_backend.cc.

References yaze::emu::input::A, yaze::emu::input::B, yaze::emu::input::DOWN, gamepads_, yaze::platform::GetGamepadAxis(), yaze::platform::GetGamepadButton(), kAxisDeadzone, yaze::platform::kGamepadAxisLeftX, yaze::platform::kGamepadAxisLeftY, yaze::platform::kGamepadButtonA, yaze::platform::kGamepadButtonB, yaze::platform::kGamepadButtonBack, yaze::platform::kGamepadButtonDpadDown, yaze::platform::kGamepadButtonDpadLeft, yaze::platform::kGamepadButtonDpadRight, yaze::platform::kGamepadButtonDpadUp, yaze::platform::kGamepadButtonLeftShoulder, yaze::platform::kGamepadButtonRightShoulder, yaze::platform::kGamepadButtonStart, yaze::platform::kGamepadButtonX, yaze::platform::kGamepadButtonY, yaze::emu::input::L, yaze::emu::input::LEFT, yaze::emu::input::R, yaze::emu::input::RIGHT, yaze::emu::input::SELECT, yaze::emu::input::ControllerState::SetButton(), yaze::emu::input::START, yaze::emu::input::UP, yaze::emu::input::X, and yaze::emu::input::Y.

Referenced by Poll().

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◆ HandleGamepadEvent()

void yaze::emu::input::SDL3InputBackend::HandleGamepadEvent ( const SDL_Event & event)
private

Handle gamepad connection/disconnection.

Parameters
eventThe SDL event

Definition at line 216 of file sdl3_input_backend.cc.

References yaze::platform::CloseGamepad(), gamepads_, LOG_INFO, and yaze::platform::OpenGamepad().

Referenced by ProcessEvent().

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Member Data Documentation

◆ config_

InputConfig yaze::emu::input::SDL3InputBackend::config_
private

Definition at line 57 of file sdl3_input_backend.h.

Referenced by GetConfig(), Initialize(), Poll(), SetConfig(), and UpdateEventState().

◆ initialized_

bool yaze::emu::input::SDL3InputBackend::initialized_ = false
private

Definition at line 58 of file sdl3_input_backend.h.

Referenced by Initialize(), IsInitialized(), Poll(), ProcessEvent(), and Shutdown().

◆ event_state_

ControllerState yaze::emu::input::SDL3InputBackend::event_state_
private

Definition at line 59 of file sdl3_input_backend.h.

Referenced by Poll(), and UpdateEventState().

◆ gamepads_

platform::GamepadHandle yaze::emu::input::SDL3InputBackend::gamepads_[4] = {nullptr, nullptr, nullptr, nullptr}
private

Definition at line 62 of file sdl3_input_backend.h.

Referenced by HandleGamepadEvent(), Initialize(), PollGamepad(), SetConfig(), and Shutdown().

◆ kAxisDeadzone

constexpr int16_t yaze::emu::input::SDL3InputBackend::kAxisDeadzone = 8000
staticconstexprprivate

Definition at line 65 of file sdl3_input_backend.h.

Referenced by PollGamepad().

The documentation for this class was generated from the following files: