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bgfx/examples/common/entry/entry_sdl.cpp
elvencache 74e7edccdc Fix issues with controller in entry_sdl.cpp. (#3321) 
SDL2's concept of GameController is a like a PS or Xbox controller, two sticks, four face buttons, etc. These are the same as the bgfx example's Gamepad.

SDL also has a concept of Joystick, which could be anything, like a flight stick. Game Controllers are implemented by these lower level joystick's.

Entry SDL gets duplicate events, for both controller and the joystick implementing it. Game controller buttons are remapped to bgfx gamepad, but joystick buttons are not. This causes incorrect button presses.

Additionally, the joystick z axis behaves differently than game controller or bgfx gamepad. With at-rest value being negative, not zero.

Due to all of this, it seems like the best approach would be to ignore joystick events and only handle game controller events.

Also, minor additional fix to get handle's index when using it as array index. Fixes compilation in Visual Studio.
2024-07-07 18:52:23 -07:00

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/*
* Copyright 2011-2024 Branimir Karadzic. All rights reserved.
* License: https://github.com/bkaradzic/bgfx/blob/master/LICENSE
*/
#include "entry_p.h"
#if ENTRY_CONFIG_USE_SDL
#if BX_PLATFORM_LINUX
# if ENTRY_CONFIG_USE_WAYLAND
# include <wayland-egl.h>
# endif
#elif BX_PLATFORM_WINDOWS
# define SDL_MAIN_HANDLED
#endif
#include <bx/os.h>
#include <SDL2/SDL.h>
BX_PRAGMA_DIAGNOSTIC_PUSH()
BX_PRAGMA_DIAGNOSTIC_IGNORED_CLANG("-Wextern-c-compat")
#include <SDL2/SDL_syswm.h>
BX_PRAGMA_DIAGNOSTIC_POP()
#include <bgfx/platform.h>
#if defined(None) // X11 defines this...
# undef None
#endif // defined(None)
#include <bx/mutex.h>
#include <bx/thread.h>
#include <bx/handlealloc.h>
#include <bx/readerwriter.h>
#include <tinystl/allocator.h>
#include <tinystl/string.h>
namespace entry
{
///
static void* sdlNativeWindowHandle(SDL_Window* _window)
{
SDL_SysWMinfo wmi;
SDL_VERSION(&wmi.version);
if (!SDL_GetWindowWMInfo(_window, &wmi) )
{
return NULL;
}
# if BX_PLATFORM_LINUX
# if ENTRY_CONFIG_USE_WAYLAND
if (wmi.subsystem == SDL_SYSWM_WAYLAND)
{
wl_egl_window *win_impl = (wl_egl_window*)SDL_GetWindowData(_window, "wl_egl_window");
if(!win_impl)
{
int width, height;
SDL_GetWindowSize(_window, &width, &height);
struct wl_surface* surface = wmi.info.wl.surface;
if(!surface)
return nullptr;
win_impl = wl_egl_window_create(surface, width, height);
SDL_SetWindowData(_window, "wl_egl_window", win_impl);
}
return (void*)(uintptr_t)win_impl;
}
else
# endif // ENTRY_CONFIG_USE_WAYLAND
return (void*)wmi.info.x11.window;
# elif BX_PLATFORM_OSX || BX_PLATFORM_IOS || BX_PLATFORM_VISIONOS
return wmi.info.cocoa.window;
# elif BX_PLATFORM_WINDOWS
return wmi.info.win.window;
# elif BX_PLATFORM_ANDROID
return wmi.info.android.window;
# endif // BX_PLATFORM_
}
static void sdlDestroyWindow(SDL_Window* _window)
{
if(!_window)
return;
# if BX_PLATFORM_LINUX
# if ENTRY_CONFIG_USE_WAYLAND
wl_egl_window *win_impl = (wl_egl_window*)SDL_GetWindowData(_window, "wl_egl_window");
if(win_impl)
{
SDL_SetWindowData(_window, "wl_egl_window", nullptr);
wl_egl_window_destroy(win_impl);
}
# endif
# endif
SDL_DestroyWindow(_window);
}
static uint8_t translateKeyModifiers(uint16_t _sdl)
{
uint8_t modifiers = 0;
modifiers |= _sdl & KMOD_LALT ? Modifier::LeftAlt : 0;
modifiers |= _sdl & KMOD_RALT ? Modifier::RightAlt : 0;
modifiers |= _sdl & KMOD_LCTRL ? Modifier::LeftCtrl : 0;
modifiers |= _sdl & KMOD_RCTRL ? Modifier::RightCtrl : 0;
modifiers |= _sdl & KMOD_LSHIFT ? Modifier::LeftShift : 0;
modifiers |= _sdl & KMOD_RSHIFT ? Modifier::RightShift : 0;
modifiers |= _sdl & KMOD_LGUI ? Modifier::LeftMeta : 0;
modifiers |= _sdl & KMOD_RGUI ? Modifier::RightMeta : 0;
return modifiers;
}
static uint8_t translateKeyModifierPress(uint16_t _key)
{
uint8_t modifier;
switch (_key)
{
case SDL_SCANCODE_LALT: { modifier = Modifier::LeftAlt; } break;
case SDL_SCANCODE_RALT: { modifier = Modifier::RightAlt; } break;
case SDL_SCANCODE_LCTRL: { modifier = Modifier::LeftCtrl; } break;
case SDL_SCANCODE_RCTRL: { modifier = Modifier::RightCtrl; } break;
case SDL_SCANCODE_LSHIFT: { modifier = Modifier::LeftShift; } break;
case SDL_SCANCODE_RSHIFT: { modifier = Modifier::RightShift; } break;
case SDL_SCANCODE_LGUI: { modifier = Modifier::LeftMeta; } break;
case SDL_SCANCODE_RGUI: { modifier = Modifier::RightMeta; } break;
default: { modifier = 0; } break;
}
return modifier;
}
static uint8_t s_translateKey[256];
static void initTranslateKey(uint16_t _sdl, Key::Enum _key)
{
BX_ASSERT(_sdl < BX_COUNTOF(s_translateKey), "Out of bounds %d.", _sdl);
s_translateKey[_sdl&0xff] = (uint8_t)_key;
}
static Key::Enum translateKey(SDL_Scancode _sdl)
{
return (Key::Enum)s_translateKey[_sdl&0xff];
}
static uint8_t s_translateGamepad[256];
static void initTranslateGamepad(uint8_t _sdl, Key::Enum _button)
{
s_translateGamepad[_sdl] = _button;
}
static Key::Enum translateGamepad(uint8_t _sdl)
{
return Key::Enum(s_translateGamepad[_sdl]);
}
static uint8_t s_translateGamepadAxis[256];
static void initTranslateGamepadAxis(uint8_t _sdl, GamepadAxis::Enum _axis)
{
s_translateGamepadAxis[_sdl] = uint8_t(_axis);
}
static GamepadAxis::Enum translateGamepadAxis(uint8_t _sdl)
{
return GamepadAxis::Enum(s_translateGamepadAxis[_sdl]);
}
struct AxisDpadRemap
{
Key::Enum first;
Key::Enum second;
};
static AxisDpadRemap s_axisDpad[] =
{
{ Key::GamepadLeft, Key::GamepadRight },
{ Key::GamepadUp, Key::GamepadDown },
{ Key::None, Key::None },
{ Key::GamepadLeft, Key::GamepadRight },
{ Key::GamepadUp, Key::GamepadDown },
{ Key::None, Key::None },
};
struct GamepadSDL
{
GamepadSDL()
: m_controller(NULL)
, m_jid(INT32_MAX)
{
bx::memSet(m_value, 0, sizeof(m_value) );
// Deadzone values from xinput.h
m_deadzone[GamepadAxis::LeftX ] =
m_deadzone[GamepadAxis::LeftY ] = 7849;
m_deadzone[GamepadAxis::RightX] =
m_deadzone[GamepadAxis::RightY] = 8689;
m_deadzone[GamepadAxis::LeftZ ] =
m_deadzone[GamepadAxis::RightZ] = 30;
}
void create(const SDL_JoyDeviceEvent& _jev)
{
m_joystick = SDL_JoystickOpen(_jev.which);
SDL_Joystick* joystick = m_joystick;
m_jid = SDL_JoystickInstanceID(joystick);
}
void create(const SDL_ControllerDeviceEvent& _cev)
{
m_controller = SDL_GameControllerOpen(_cev.which);
SDL_Joystick* joystick = SDL_GameControllerGetJoystick(m_controller);
m_jid = SDL_JoystickInstanceID(joystick);
}
void update(EventQueue& _eventQueue, WindowHandle _handle, GamepadHandle _gamepad, GamepadAxis::Enum _axis, int32_t _value)
{
if (filter(_axis, &_value) )
{
_eventQueue.postAxisEvent(_handle, _gamepad, _axis, _value);
}
}
void destroy()
{
if (NULL != m_controller)
{
SDL_GameControllerClose(m_controller);
m_controller = NULL;
}
if (NULL != m_joystick)
{
SDL_JoystickClose(m_joystick);
m_joystick = NULL;
}
m_jid = INT32_MAX;
}
bool filter(GamepadAxis::Enum _axis, int32_t* _value)
{
const int32_t old = m_value[_axis];
const int32_t deadzone = m_deadzone[_axis];
int32_t value = *_value;
value = value > deadzone || value < -deadzone ? value : 0;
m_value[_axis] = value;
*_value = value;
return old != value;
}
int32_t m_value[GamepadAxis::Count];
int32_t m_deadzone[GamepadAxis::Count];
SDL_Joystick* m_joystick;
SDL_GameController* m_controller;
// SDL_Haptic* m_haptic;
SDL_JoystickID m_jid;
};
struct MainThreadEntry
{
int m_argc;
char** m_argv;
static int32_t threadFunc(bx::Thread* _thread, void* _userData);
};
struct Msg
{
Msg()
: m_x(0)
, m_y(0)
, m_width(0)
, m_height(0)
, m_flags(0)
, m_flagsEnabled(false)
{
}
int32_t m_x;
int32_t m_y;
uint32_t m_width;
uint32_t m_height;
uint32_t m_flags;
tinystl::string m_title;
bool m_flagsEnabled;
};
static uint32_t s_userEventStart;
enum SDL_USER_WINDOW
{
SDL_USER_WINDOW_CREATE,
SDL_USER_WINDOW_DESTROY,
SDL_USER_WINDOW_SET_TITLE,
SDL_USER_WINDOW_SET_FLAGS,
SDL_USER_WINDOW_SET_POS,
SDL_USER_WINDOW_SET_SIZE,
SDL_USER_WINDOW_TOGGLE_FRAME,
SDL_USER_WINDOW_TOGGLE_FULL_SCREEN,
SDL_USER_WINDOW_MOUSE_LOCK,
};
static void sdlPostEvent(SDL_USER_WINDOW _type, WindowHandle _handle, Msg* _msg = NULL, uint32_t _code = 0)
{
SDL_Event event;
SDL_UserEvent& uev = event.user;
uev.type = s_userEventStart + _type;
union { void* p; WindowHandle h; } cast;
cast.h = _handle;
uev.data1 = cast.p;
uev.data2 = _msg;
uev.code = _code;
SDL_PushEvent(&event);
}
static WindowHandle getWindowHandle(const SDL_UserEvent& _uev)
{
union { void* p; WindowHandle h; } cast;
cast.p = _uev.data1;
return cast.h;
}
struct Context
{
Context()
: m_width(ENTRY_DEFAULT_WIDTH)
, m_height(ENTRY_DEFAULT_HEIGHT)
, m_aspectRatio(16.0f/9.0f)
, m_mx(0)
, m_my(0)
, m_mz(0)
, m_mouseLock(false)
, m_fullscreen(false)
{
bx::memSet(s_translateKey, 0, sizeof(s_translateKey) );
initTranslateKey(SDL_SCANCODE_ESCAPE, Key::Esc);
initTranslateKey(SDL_SCANCODE_RETURN, Key::Return);
initTranslateKey(SDL_SCANCODE_TAB, Key::Tab);
initTranslateKey(SDL_SCANCODE_BACKSPACE, Key::Backspace);
initTranslateKey(SDL_SCANCODE_SPACE, Key::Space);
initTranslateKey(SDL_SCANCODE_UP, Key::Up);
initTranslateKey(SDL_SCANCODE_DOWN, Key::Down);
initTranslateKey(SDL_SCANCODE_LEFT, Key::Left);
initTranslateKey(SDL_SCANCODE_RIGHT, Key::Right);
initTranslateKey(SDL_SCANCODE_PAGEUP, Key::PageUp);
initTranslateKey(SDL_SCANCODE_PAGEDOWN, Key::PageDown);
initTranslateKey(SDL_SCANCODE_HOME, Key::Home);
initTranslateKey(SDL_SCANCODE_END, Key::End);
initTranslateKey(SDL_SCANCODE_PRINTSCREEN, Key::Print);
initTranslateKey(SDL_SCANCODE_KP_PLUS, Key::Plus);
initTranslateKey(SDL_SCANCODE_EQUALS, Key::Plus);
initTranslateKey(SDL_SCANCODE_KP_MINUS, Key::Minus);
initTranslateKey(SDL_SCANCODE_MINUS, Key::Minus);
initTranslateKey(SDL_SCANCODE_GRAVE, Key::Tilde);
initTranslateKey(SDL_SCANCODE_KP_COMMA, Key::Comma);
initTranslateKey(SDL_SCANCODE_COMMA, Key::Comma);
initTranslateKey(SDL_SCANCODE_KP_PERIOD, Key::Period);
initTranslateKey(SDL_SCANCODE_PERIOD, Key::Period);
initTranslateKey(SDL_SCANCODE_SLASH, Key::Slash);
initTranslateKey(SDL_SCANCODE_F1, Key::F1);
initTranslateKey(SDL_SCANCODE_F2, Key::F2);
initTranslateKey(SDL_SCANCODE_F3, Key::F3);
initTranslateKey(SDL_SCANCODE_F4, Key::F4);
initTranslateKey(SDL_SCANCODE_F5, Key::F5);
initTranslateKey(SDL_SCANCODE_F6, Key::F6);
initTranslateKey(SDL_SCANCODE_F7, Key::F7);
initTranslateKey(SDL_SCANCODE_F8, Key::F8);
initTranslateKey(SDL_SCANCODE_F9, Key::F9);
initTranslateKey(SDL_SCANCODE_F10, Key::F10);
initTranslateKey(SDL_SCANCODE_F11, Key::F11);
initTranslateKey(SDL_SCANCODE_F12, Key::F12);
initTranslateKey(SDL_SCANCODE_KP_0, Key::NumPad0);
initTranslateKey(SDL_SCANCODE_KP_1, Key::NumPad1);
initTranslateKey(SDL_SCANCODE_KP_2, Key::NumPad2);
initTranslateKey(SDL_SCANCODE_KP_3, Key::NumPad3);
initTranslateKey(SDL_SCANCODE_KP_4, Key::NumPad4);
initTranslateKey(SDL_SCANCODE_KP_5, Key::NumPad5);
initTranslateKey(SDL_SCANCODE_KP_6, Key::NumPad6);
initTranslateKey(SDL_SCANCODE_KP_7, Key::NumPad7);
initTranslateKey(SDL_SCANCODE_KP_8, Key::NumPad8);
initTranslateKey(SDL_SCANCODE_KP_9, Key::NumPad9);
initTranslateKey(SDL_SCANCODE_0, Key::Key0);
initTranslateKey(SDL_SCANCODE_1, Key::Key1);
initTranslateKey(SDL_SCANCODE_2, Key::Key2);
initTranslateKey(SDL_SCANCODE_3, Key::Key3);
initTranslateKey(SDL_SCANCODE_4, Key::Key4);
initTranslateKey(SDL_SCANCODE_5, Key::Key5);
initTranslateKey(SDL_SCANCODE_6, Key::Key6);
initTranslateKey(SDL_SCANCODE_7, Key::Key7);
initTranslateKey(SDL_SCANCODE_8, Key::Key8);
initTranslateKey(SDL_SCANCODE_9, Key::Key9);
initTranslateKey(SDL_SCANCODE_A, Key::KeyA);
initTranslateKey(SDL_SCANCODE_B, Key::KeyB);
initTranslateKey(SDL_SCANCODE_C, Key::KeyC);
initTranslateKey(SDL_SCANCODE_D, Key::KeyD);
initTranslateKey(SDL_SCANCODE_E, Key::KeyE);
initTranslateKey(SDL_SCANCODE_F, Key::KeyF);
initTranslateKey(SDL_SCANCODE_G, Key::KeyG);
initTranslateKey(SDL_SCANCODE_H, Key::KeyH);
initTranslateKey(SDL_SCANCODE_I, Key::KeyI);
initTranslateKey(SDL_SCANCODE_J, Key::KeyJ);
initTranslateKey(SDL_SCANCODE_K, Key::KeyK);
initTranslateKey(SDL_SCANCODE_L, Key::KeyL);
initTranslateKey(SDL_SCANCODE_M, Key::KeyM);
initTranslateKey(SDL_SCANCODE_N, Key::KeyN);
initTranslateKey(SDL_SCANCODE_O, Key::KeyO);
initTranslateKey(SDL_SCANCODE_P, Key::KeyP);
initTranslateKey(SDL_SCANCODE_Q, Key::KeyQ);
initTranslateKey(SDL_SCANCODE_R, Key::KeyR);
initTranslateKey(SDL_SCANCODE_S, Key::KeyS);
initTranslateKey(SDL_SCANCODE_T, Key::KeyT);
initTranslateKey(SDL_SCANCODE_U, Key::KeyU);
initTranslateKey(SDL_SCANCODE_V, Key::KeyV);
initTranslateKey(SDL_SCANCODE_W, Key::KeyW);
initTranslateKey(SDL_SCANCODE_X, Key::KeyX);
initTranslateKey(SDL_SCANCODE_Y, Key::KeyY);
initTranslateKey(SDL_SCANCODE_Z, Key::KeyZ);
bx::memSet(s_translateGamepad, uint8_t(Key::Count), sizeof(s_translateGamepad) );
initTranslateGamepad(SDL_CONTROLLER_BUTTON_A, Key::GamepadA);
initTranslateGamepad(SDL_CONTROLLER_BUTTON_B, Key::GamepadB);
initTranslateGamepad(SDL_CONTROLLER_BUTTON_X, Key::GamepadX);
initTranslateGamepad(SDL_CONTROLLER_BUTTON_Y, Key::GamepadY);
initTranslateGamepad(SDL_CONTROLLER_BUTTON_LEFTSTICK, Key::GamepadThumbL);
initTranslateGamepad(SDL_CONTROLLER_BUTTON_RIGHTSTICK, Key::GamepadThumbR);
initTranslateGamepad(SDL_CONTROLLER_BUTTON_LEFTSHOULDER, Key::GamepadShoulderL);
initTranslateGamepad(SDL_CONTROLLER_BUTTON_RIGHTSHOULDER, Key::GamepadShoulderR);
initTranslateGamepad(SDL_CONTROLLER_BUTTON_DPAD_UP, Key::GamepadUp);
initTranslateGamepad(SDL_CONTROLLER_BUTTON_DPAD_DOWN, Key::GamepadDown);
initTranslateGamepad(SDL_CONTROLLER_BUTTON_DPAD_LEFT, Key::GamepadLeft);
initTranslateGamepad(SDL_CONTROLLER_BUTTON_DPAD_RIGHT, Key::GamepadRight);
initTranslateGamepad(SDL_CONTROLLER_BUTTON_BACK, Key::GamepadBack);
initTranslateGamepad(SDL_CONTROLLER_BUTTON_START, Key::GamepadStart);
initTranslateGamepad(SDL_CONTROLLER_BUTTON_GUIDE, Key::GamepadGuide);
bx::memSet(s_translateGamepadAxis, uint8_t(GamepadAxis::Count), sizeof(s_translateGamepadAxis) );
initTranslateGamepadAxis(SDL_CONTROLLER_AXIS_LEFTX, GamepadAxis::LeftX);
initTranslateGamepadAxis(SDL_CONTROLLER_AXIS_LEFTY, GamepadAxis::LeftY);
initTranslateGamepadAxis(SDL_CONTROLLER_AXIS_TRIGGERLEFT, GamepadAxis::LeftZ);
initTranslateGamepadAxis(SDL_CONTROLLER_AXIS_RIGHTX, GamepadAxis::RightX);
initTranslateGamepadAxis(SDL_CONTROLLER_AXIS_RIGHTY, GamepadAxis::RightY);
initTranslateGamepadAxis(SDL_CONTROLLER_AXIS_TRIGGERRIGHT, GamepadAxis::RightZ);
}
int run(int _argc, char** _argv)
{
m_mte.m_argc = _argc;
m_mte.m_argv = _argv;
SDL_Init(0
| SDL_INIT_GAMECONTROLLER
);
m_windowAlloc.alloc();
m_window[0] = SDL_CreateWindow("bgfx"
, SDL_WINDOWPOS_UNDEFINED
, SDL_WINDOWPOS_UNDEFINED
, m_width
, m_height
, SDL_WINDOW_SHOWN
| SDL_WINDOW_RESIZABLE
);
m_flags[0] = 0
| ENTRY_WINDOW_FLAG_ASPECT_RATIO
| ENTRY_WINDOW_FLAG_FRAME
;
s_userEventStart = SDL_RegisterEvents(7);
bgfx::renderFrame();
m_thread.init(MainThreadEntry::threadFunc, &m_mte);
// Force window resolution...
WindowHandle defaultWindow = { 0 };
setWindowSize(defaultWindow, m_width, m_height, true);
SDL_EventState(SDL_DROPFILE, SDL_ENABLE);
bx::FileReaderI* reader = NULL;
while (NULL == reader)
{
reader = getFileReader();
bx::sleep(100);
}
if (bx::open(reader, "gamecontrollerdb.txt") )
{
bx::AllocatorI* allocator = getAllocator();
uint32_t size = (uint32_t)bx::getSize(reader);
void* data = bx::alloc(allocator, size + 1);
bx::read(reader, data, size, bx::ErrorAssert{});
bx::close(reader);
((char*)data)[size] = '\0';
if (SDL_GameControllerAddMapping( (char*)data) < 0) {
DBG("SDL game controller add mapping failed: %s", SDL_GetError());
}
bx::free(allocator, data);
}
bool exit = false;
SDL_Event event;
while (!exit)
{
bgfx::renderFrame();
while (SDL_PollEvent(&event) )
{
switch (event.type)
{
case SDL_QUIT:
m_eventQueue.postExitEvent();
exit = true;
break;
case SDL_MOUSEMOTION:
{
const SDL_MouseMotionEvent& mev = event.motion;
m_mx = mev.x;
m_my = mev.y;
WindowHandle handle = findHandle(mev.windowID);
if (isValid(handle) )
{
m_eventQueue.postMouseEvent(handle, m_mx, m_my, m_mz);
}
}
break;
case SDL_MOUSEBUTTONDOWN:
case SDL_MOUSEBUTTONUP:
{
const SDL_MouseButtonEvent& mev = event.button;
WindowHandle handle = findHandle(mev.windowID);
if (isValid(handle) )
{
MouseButton::Enum button;
switch (mev.button)
{
default:
case SDL_BUTTON_LEFT: button = MouseButton::Left; break;
case SDL_BUTTON_MIDDLE: button = MouseButton::Middle; break;
case SDL_BUTTON_RIGHT: button = MouseButton::Right; break;
}
m_eventQueue.postMouseEvent(handle
, mev.x
, mev.y
, m_mz
, button
, mev.type == SDL_MOUSEBUTTONDOWN
);
}
}
break;
case SDL_MOUSEWHEEL:
{
const SDL_MouseWheelEvent& mev = event.wheel;
m_mz += mev.y;
WindowHandle handle = findHandle(mev.windowID);
if (isValid(handle) )
{
m_eventQueue.postMouseEvent(handle, m_mx, m_my, m_mz);
}
}
break;
case SDL_TEXTINPUT:
{
const SDL_TextInputEvent& tev = event.text;
WindowHandle handle = findHandle(tev.windowID);
if (isValid(handle) )
{
m_eventQueue.postCharEvent(handle, 1, (const uint8_t*)tev.text);
}
}
break;
case SDL_KEYDOWN:
{
const SDL_KeyboardEvent& kev = event.key;
WindowHandle handle = findHandle(kev.windowID);
if (isValid(handle) )
{
uint8_t modifiers = translateKeyModifiers(kev.keysym.mod);
Key::Enum key = translateKey(kev.keysym.scancode);
#if 0
DBG("SDL scancode %d, key %d, name %s, key name %s"
, kev.keysym.scancode
, key
, SDL_GetScancodeName(kev.keysym.scancode)
, SDL_GetKeyName(kev.keysym.scancode)
);
#endif // 0
/// If you only press (e.g.) 'shift' and nothing else, then key == 'shift', modifier == 0.
/// Further along, pressing 'shift' + 'ctrl' would be: key == 'shift', modifier == 'ctrl.
if (0 == key && 0 == modifiers)
{
modifiers = translateKeyModifierPress(kev.keysym.scancode);
}
if (Key::Esc == key)
{
uint8_t pressedChar[4];
pressedChar[0] = 0x1b;
m_eventQueue.postCharEvent(handle, 1, pressedChar);
}
else if (Key::Return == key)
{
uint8_t pressedChar[4];
pressedChar[0] = 0x0d;
m_eventQueue.postCharEvent(handle, 1, pressedChar);
}
else if (Key::Backspace == key)
{
uint8_t pressedChar[4];
pressedChar[0] = 0x08;
m_eventQueue.postCharEvent(handle, 1, pressedChar);
}
m_eventQueue.postKeyEvent(handle, key, modifiers, kev.state == SDL_PRESSED);
}
}
break;
case SDL_KEYUP:
{
const SDL_KeyboardEvent& kev = event.key;
WindowHandle handle = findHandle(kev.windowID);
if (isValid(handle) )
{
uint8_t modifiers = translateKeyModifiers(kev.keysym.mod);
Key::Enum key = translateKey(kev.keysym.scancode);
m_eventQueue.postKeyEvent(handle, key, modifiers, kev.state == SDL_PRESSED);
}
}
break;
case SDL_WINDOWEVENT:
{
const SDL_WindowEvent& wev = event.window;
switch (wev.event)
{
case SDL_WINDOWEVENT_RESIZED:
case SDL_WINDOWEVENT_SIZE_CHANGED:
{
WindowHandle handle = findHandle(wev.windowID);
setWindowSize(handle, wev.data1, wev.data2);
}
break;
case SDL_WINDOWEVENT_SHOWN:
case SDL_WINDOWEVENT_HIDDEN:
case SDL_WINDOWEVENT_EXPOSED:
case SDL_WINDOWEVENT_MOVED:
case SDL_WINDOWEVENT_MINIMIZED:
case SDL_WINDOWEVENT_MAXIMIZED:
case SDL_WINDOWEVENT_RESTORED:
case SDL_WINDOWEVENT_ENTER:
case SDL_WINDOWEVENT_LEAVE:
case SDL_WINDOWEVENT_FOCUS_GAINED:
case SDL_WINDOWEVENT_FOCUS_LOST:
break;
case SDL_WINDOWEVENT_CLOSE:
{
WindowHandle handle = findHandle(wev.windowID);
if (0 == handle.idx)
{
m_eventQueue.postExitEvent();
exit = true;
}
}
break;
}
}
break;
// Ignore Joystick events. Example's Gamepad concept mirrors SDL Game Controller.
// Game Controllers are higher level wrapper around Joystick and both events come through.
// Respond to only the controller events. Controller events are properly remapped.
case SDL_JOYAXISMOTION:
case SDL_JOYBUTTONDOWN:
case SDL_JOYBUTTONUP:
case SDL_JOYDEVICEADDED:
case SDL_JOYDEVICEREMOVED:
break;
case SDL_CONTROLLERAXISMOTION:
{
const SDL_ControllerAxisEvent& aev = event.caxis;
GamepadHandle handle = findGamepad(aev.which);
if (isValid(handle) )
{
GamepadAxis::Enum axis = translateGamepadAxis(aev.axis);
m_gamepad[handle.idx].update(m_eventQueue, defaultWindow, handle, axis, aev.value);
}
}
break;
case SDL_CONTROLLERBUTTONDOWN:
case SDL_CONTROLLERBUTTONUP:
{
const SDL_ControllerButtonEvent& bev = event.cbutton;
GamepadHandle handle = findGamepad(bev.which);
if (isValid(handle) )
{
Key::Enum key = translateGamepad(bev.button);
if (Key::Count != key)
{
m_eventQueue.postKeyEvent(defaultWindow, key, 0, event.type == SDL_CONTROLLERBUTTONDOWN);
}
}
}
break;
case SDL_CONTROLLERDEVICEADDED:
{
GamepadHandle handle = { m_gamepadAlloc.alloc() };
if (isValid(handle) )
{
const SDL_ControllerDeviceEvent& cev = event.cdevice;
m_gamepad[handle.idx].create(cev);
m_eventQueue.postGamepadEvent(defaultWindow, handle, true);
}
}
break;
case SDL_CONTROLLERDEVICEREMAPPED:
{
}
break;
case SDL_CONTROLLERDEVICEREMOVED:
{
const SDL_ControllerDeviceEvent& cev = event.cdevice;
GamepadHandle handle = findGamepad(cev.which);
if (isValid(handle) )
{
m_gamepad[handle.idx].destroy();
m_gamepadAlloc.free(handle.idx);
m_eventQueue.postGamepadEvent(defaultWindow, handle, false);
}
}
break;
case SDL_DROPFILE:
{
const SDL_DropEvent& dev = event.drop;
WindowHandle handle = defaultWindow; //findHandle(dev.windowID);
if (isValid(handle) )
{
m_eventQueue.postDropFileEvent(handle, dev.file);
SDL_free(dev.file);
}
}
break;
default:
{
const SDL_UserEvent& uev = event.user;
switch (uev.type - s_userEventStart)
{
case SDL_USER_WINDOW_CREATE:
{
WindowHandle handle = getWindowHandle(uev);
Msg* msg = (Msg*)uev.data2;
m_window[handle.idx] = SDL_CreateWindow(msg->m_title.c_str()
, msg->m_x
, msg->m_y
, msg->m_width
, msg->m_height
, SDL_WINDOW_SHOWN
| SDL_WINDOW_RESIZABLE
);
m_flags[handle.idx] = msg->m_flags;
void* nwh = sdlNativeWindowHandle(m_window[handle.idx]);
if (NULL != nwh)
{
m_eventQueue.postSizeEvent(handle, msg->m_width, msg->m_height);
m_eventQueue.postWindowEvent(handle, nwh);
}
delete msg;
}
break;
case SDL_USER_WINDOW_DESTROY:
{
WindowHandle handle = getWindowHandle(uev);
if (isValid(handle) )
{
m_eventQueue.postWindowEvent(handle);
sdlDestroyWindow(m_window[handle.idx]);
m_window[handle.idx] = NULL;
}
}
break;
case SDL_USER_WINDOW_SET_TITLE:
{
WindowHandle handle = getWindowHandle(uev);
Msg* msg = (Msg*)uev.data2;
if (isValid(handle) )
{
SDL_SetWindowTitle(m_window[handle.idx], msg->m_title.c_str() );
}
delete msg;
}
break;
case SDL_USER_WINDOW_SET_FLAGS:
{
WindowHandle handle = getWindowHandle(uev);
Msg* msg = (Msg*)uev.data2;
if (msg->m_flagsEnabled)
{
m_flags[handle.idx] |= msg->m_flags;
}
else
{
m_flags[handle.idx] &= ~msg->m_flags;
}
delete msg;
}
break;
case SDL_USER_WINDOW_SET_POS:
{
WindowHandle handle = getWindowHandle(uev);
Msg* msg = (Msg*)uev.data2;
SDL_SetWindowPosition(m_window[handle.idx], msg->m_x, msg->m_y);
delete msg;
}
break;
case SDL_USER_WINDOW_SET_SIZE:
{
WindowHandle handle = getWindowHandle(uev);
Msg* msg = (Msg*)uev.data2;
if (isValid(handle) )
{
setWindowSize(handle, msg->m_width, msg->m_height);
}
delete msg;
}
break;
case SDL_USER_WINDOW_TOGGLE_FRAME:
{
WindowHandle handle = getWindowHandle(uev);
if (isValid(handle) )
{
m_flags[handle.idx] ^= ENTRY_WINDOW_FLAG_FRAME;
SDL_SetWindowBordered(m_window[handle.idx], (SDL_bool)!!(m_flags[handle.idx] & ENTRY_WINDOW_FLAG_FRAME) );
}
}
break;
case SDL_USER_WINDOW_TOGGLE_FULL_SCREEN:
{
WindowHandle handle = getWindowHandle(uev);
m_fullscreen = !m_fullscreen;
SDL_SetWindowFullscreen(m_window[handle.idx], m_fullscreen ? SDL_WINDOW_FULLSCREEN_DESKTOP : 0);
}
break;
case SDL_USER_WINDOW_MOUSE_LOCK:
{
SDL_SetRelativeMouseMode(!!uev.code ? SDL_TRUE : SDL_FALSE);
}
break;
default:
break;
}
}
break;
}
}
}
while (bgfx::RenderFrame::NoContext != bgfx::renderFrame() ) {};
m_thread.shutdown();
sdlDestroyWindow(m_window[0]);
SDL_Quit();
return m_thread.getExitCode();
}
WindowHandle findHandle(uint32_t _windowId)
{
SDL_Window* window = SDL_GetWindowFromID(_windowId);
return findHandle(window);
}
WindowHandle findHandle(SDL_Window* _window)
{
bx::MutexScope scope(m_lock);
for (uint32_t ii = 0, num = m_windowAlloc.getNumHandles(); ii < num; ++ii)
{
uint16_t idx = m_windowAlloc.getHandleAt(ii);
if (_window == m_window[idx])
{
WindowHandle handle = { idx };
return handle;
}
}
WindowHandle invalid = { UINT16_MAX };
return invalid;
}
void setWindowSize(WindowHandle _handle, uint32_t _width, uint32_t _height, bool _force = false)
{
if (_width != m_width
|| _height != m_height
|| _force)
{
m_width = _width;
m_height = _height;
SDL_SetWindowSize(m_window[_handle.idx], m_width, m_height);
m_eventQueue.postSizeEvent(_handle, m_width, m_height);
}
}
GamepadHandle findGamepad(SDL_JoystickID _jid)
{
for (uint32_t ii = 0, num = m_gamepadAlloc.getNumHandles(); ii < num; ++ii)
{
uint16_t idx = m_gamepadAlloc.getHandleAt(ii);
if (_jid == m_gamepad[idx].m_jid)
{
GamepadHandle handle = { idx };
return handle;
}
}
GamepadHandle invalid = { UINT16_MAX };
return invalid;
}
MainThreadEntry m_mte;
bx::Thread m_thread;
EventQueue m_eventQueue;
bx::Mutex m_lock;
bx::HandleAllocT<ENTRY_CONFIG_MAX_WINDOWS> m_windowAlloc;
SDL_Window* m_window[ENTRY_CONFIG_MAX_WINDOWS];
uint32_t m_flags[ENTRY_CONFIG_MAX_WINDOWS];
bx::HandleAllocT<ENTRY_CONFIG_MAX_GAMEPADS> m_gamepadAlloc;
GamepadSDL m_gamepad[ENTRY_CONFIG_MAX_GAMEPADS];
uint32_t m_width;
uint32_t m_height;
float m_aspectRatio;
int32_t m_mx;
int32_t m_my;
int32_t m_mz;
bool m_mouseLock;
bool m_fullscreen;
};
static Context s_ctx;
const Event* poll()
{
return s_ctx.m_eventQueue.poll();
}
const Event* poll(WindowHandle _handle)
{
return s_ctx.m_eventQueue.poll(_handle);
}
void release(const Event* _event)
{
s_ctx.m_eventQueue.release(_event);
}
WindowHandle createWindow(int32_t _x, int32_t _y, uint32_t _width, uint32_t _height, uint32_t _flags, const char* _title)
{
bx::MutexScope scope(s_ctx.m_lock);
WindowHandle handle = { s_ctx.m_windowAlloc.alloc() };
if (UINT16_MAX != handle.idx)
{
Msg* msg = new Msg;
msg->m_x = _x;
msg->m_y = _y;
msg->m_width = _width;
msg->m_height = _height;
msg->m_title = _title;
msg->m_flags = _flags;
sdlPostEvent(SDL_USER_WINDOW_CREATE, handle, msg);
}
return handle;
}
void destroyWindow(WindowHandle _handle)
{
if (UINT16_MAX != _handle.idx)
{
sdlPostEvent(SDL_USER_WINDOW_DESTROY, _handle);
bx::MutexScope scope(s_ctx.m_lock);
s_ctx.m_windowAlloc.free(_handle.idx);
}
}
void setWindowPos(WindowHandle _handle, int32_t _x, int32_t _y)
{
Msg* msg = new Msg;
msg->m_x = _x;
msg->m_y = _y;
sdlPostEvent(SDL_USER_WINDOW_SET_POS, _handle, msg);
}
void setWindowSize(WindowHandle _handle, uint32_t _width, uint32_t _height)
{
Msg* msg = new Msg;
msg->m_width = _width;
msg->m_height = _height;
sdlPostEvent(SDL_USER_WINDOW_SET_SIZE, _handle, msg);
}
void setWindowTitle(WindowHandle _handle, const char* _title)
{
Msg* msg = new Msg;
msg->m_title = _title;
sdlPostEvent(SDL_USER_WINDOW_SET_TITLE, _handle, msg);
}
void setWindowFlags(WindowHandle _handle, uint32_t _flags, bool _enabled)
{
Msg* msg = new Msg;
msg->m_flags = _flags;
msg->m_flagsEnabled = _enabled;
sdlPostEvent(SDL_USER_WINDOW_SET_FLAGS, _handle, msg);
}
void toggleFullscreen(WindowHandle _handle)
{
sdlPostEvent(SDL_USER_WINDOW_TOGGLE_FULL_SCREEN, _handle);
}
void setMouseLock(WindowHandle _handle, bool _lock)
{
sdlPostEvent(SDL_USER_WINDOW_MOUSE_LOCK, _handle, NULL, _lock);
}
void* getNativeWindowHandle(WindowHandle _handle)
{
return sdlNativeWindowHandle(s_ctx.m_window[_handle.idx]);
}
void* getNativeDisplayHandle()
{
SDL_SysWMinfo wmi;
SDL_VERSION(&wmi.version);
if (!SDL_GetWindowWMInfo(s_ctx.m_window[0], &wmi) )
{
return NULL;
}
# if BX_PLATFORM_LINUX
# if ENTRY_CONFIG_USE_WAYLAND
if (wmi.subsystem == SDL_SYSWM_WAYLAND)
return wmi.info.wl.display;
else
# endif // ENTRY_CONFIG_USE_WAYLAND
return wmi.info.x11.display;
# else
return NULL;
# endif // BX_PLATFORM_*
}
bgfx::NativeWindowHandleType::Enum getNativeWindowHandleType()
{
SDL_SysWMinfo wmi;
SDL_VERSION(&wmi.version);
if (!SDL_GetWindowWMInfo(s_ctx.m_window[kDefaultWindowHandle.idx], &wmi) )
{
return bgfx::NativeWindowHandleType::Default;
}
# if BX_PLATFORM_LINUX
# if ENTRY_CONFIG_USE_WAYLAND
if (wmi.subsystem == SDL_SYSWM_WAYLAND)
{
return bgfx::NativeWindowHandleType::Wayland;
}
else
# endif // ENTRY_CONFIG_USE_WAYLAND
{
return bgfx::NativeWindowHandleType::Default;
}
# else
return bgfx::NativeWindowHandleType::Default;
# endif // BX_PLATFORM_*
}
int32_t MainThreadEntry::threadFunc(bx::Thread* _thread, void* _userData)
{
BX_UNUSED(_thread);
MainThreadEntry* self = (MainThreadEntry*)_userData;
int32_t result = main(self->m_argc, self->m_argv);
SDL_Event event;
SDL_QuitEvent& qev = event.quit;
qev.type = SDL_QUIT;
SDL_PushEvent(&event);
return result;
}
} // namespace entry
int main(int _argc, char** _argv)
{
using namespace entry;
return s_ctx.run(_argc, _argv);
}
#endif // ENTRY_CONFIG_USE_SDL
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