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engine: drop raw SDL joystick API, always use GameController instead. Implement actually working rumble, ensure we're freeing up all resources related to gamepads

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This commit is contained in:
Alibek Omarov 2025-01-31 17:49:07 +03:00
parent bff7299f9b
commit b16037eabf
11 changed files with 313 additions and 418 deletions
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111
engine/client/in_joy.c
View file

@ -43,7 +43,6 @@ static struct joy_axis_s
short val;
short prevval;
} joyaxis[MAX_AXES] = { 0 };
static byte currentbinding; // add posibility to remap keys, to place it in joykeys[]
static qboolean joy_initialized;
static CVAR_DEFINE_AUTO( joy_pitch, "100.0", FCVAR_ARCHIVE | FCVAR_FILTERABLE, "joystick pitch sensitivity" );
@ -60,8 +59,6 @@ static CVAR_DEFINE_AUTO( joy_pitch_deadzone, DEFAULT_JOY_DEADZONE, FCVAR_ARCHIVE
static CVAR_DEFINE_AUTO( joy_yaw_deadzone, DEFAULT_JOY_DEADZONE, FCVAR_ARCHIVE | FCVAR_FILTERABLE, "yaw axis deadzone. Value from 0 to 32767" );
static CVAR_DEFINE_AUTO( joy_axis_binding, "sfpyrl", FCVAR_ARCHIVE | FCVAR_FILTERABLE, "axis hardware id to engine inner axis binding, "
"s - side, f - forward, y - yaw, p - pitch, r - left trigger, l - right trigger" );
static CVAR_DEFINE_AUTO( joy_found, "0", FCVAR_READ_ONLY, "is joystick is connected" );
static CVAR_DEFINE_AUTO( joy_index, "0", FCVAR_READ_ONLY, "current active joystick" );
CVAR_DEFINE_AUTO( joy_enable, "1", FCVAR_ARCHIVE | FCVAR_FILTERABLE, "enable joystick" );
/*
@ -71,7 +68,7 @@ Joy_IsActive
*/
qboolean Joy_IsActive( void )
{
return joy_found.value && joy_enable.value;
return joy_enable.value;
}
/*
@ -81,7 +78,7 @@ Joy_HatMotionEvent
DPad events
============
*/
void Joy_HatMotionEvent( byte hat, byte value )
static void Joy_HatMotionEvent( int value )
{
struct
{
@ -96,9 +93,6 @@ void Joy_HatMotionEvent( byte hat, byte value )
};
int i;
if( !joy_found.value )
return;
for( i = 0; i < ARRAYSIZE( keys ); i++ )
{
if( value & keys[i].mask )
@ -225,7 +219,7 @@ static void Joy_ProcessStick( const engineAxis_t engineAxis, short value )
val |= Joy_GetHatValueForAxis( JOY_AXIS_SIDE );
val |= Joy_GetHatValueForAxis( JOY_AXIS_FWD );
Joy_HatMotionEvent( 0, val );
Joy_HatMotionEvent( val );
}
}
@ -236,23 +230,9 @@ Joy_AxisMotionEvent
Axis events
=============
*/
void Joy_AxisMotionEvent( byte axis, short value )
void Joy_AxisMotionEvent( engineAxis_t engineAxis, short value )
{
if( !joy_found.value )
return;
if( axis >= MAX_AXES )
{
Con_Reportf( "Only 6 axes is supported\n" );
return;
}
Joy_KnownAxisMotionEvent( joyaxesmap[axis], value );
}
void Joy_KnownAxisMotionEvent( engineAxis_t engineAxis, short value )
{
if( engineAxis == JOY_AXIS_NULL )
if( engineAxis >= JOY_AXIS_NULL )
return;
if( value == joyaxis[engineAxis].val )
@ -264,70 +244,6 @@ void Joy_KnownAxisMotionEvent( engineAxis_t engineAxis, short value )
Joy_ProcessStick( engineAxis, value );
}
/*
=============
Joy_BallMotionEvent
Trackball events. UNDONE
=============
*/
void Joy_BallMotionEvent( byte ball, short xrel, short yrel )
{
//if( !joy_found.value )
// return;
}
/*
=============
Joy_ButtonEvent
Button events
=============
*/
void Joy_ButtonEvent( byte button, byte down )
{
if( !joy_found.value )
return;
// generic game button code.
if( button > 32 )
{
int origbutton = button;
button = ( button & 31 ) + K_AUX1;
Con_Reportf( "Only 32 joybuttons is supported, converting %i button ID to %s\n", origbutton, Key_KeynumToString( button ) );
}
else button += K_AUX1;
Key_Event( button, down );
}
/*
=============
Joy_RemoveEvent
Called when joystick is removed. For future expansion
=============
*/
void Joy_RemoveEvent( void )
{
if( joy_found.value )
Cvar_FullSet( "joy_found", "0", FCVAR_READ_ONLY );
}
/*
=============
Joy_RemoveEvent
Called when joystick is removed. For future expansion
=============
*/
void Joy_AddEvent( void )
{
if( joy_enable.value && !joy_found.value )
Cvar_FullSet( "joy_found", "1", FCVAR_READ_ONLY );
}
/*
=============
Joy_FinalizeMove
@ -364,14 +280,8 @@ void Joy_FinalizeMove( float *fw, float *side, float *dpitch, float *dyaw )
*fw -= joy_forward.value * (float)joyaxis[JOY_AXIS_FWD ].val/(float)SHRT_MAX; // must be form -1.0 to 1.0
*side += joy_side.value * (float)joyaxis[JOY_AXIS_SIDE].val/(float)SHRT_MAX;
#if !defined(XASH_SDL)
*dpitch += joy_pitch.value * (float)joyaxis[JOY_AXIS_PITCH].val/(float)SHRT_MAX * host.realframetime; // abs axis rotate is frametime related
*dyaw -= joy_yaw.value * (float)joyaxis[JOY_AXIS_YAW ].val/(float)SHRT_MAX * host.realframetime;
#else
// HACKHACK: SDL have inverted look axis.
*dpitch -= joy_pitch.value * (float)joyaxis[JOY_AXIS_PITCH].val/(float)SHRT_MAX * host.realframetime;
*dyaw += joy_yaw.value * (float)joyaxis[JOY_AXIS_YAW ].val/(float)SHRT_MAX * host.realframetime;
#endif
}
/*
@ -402,10 +312,6 @@ void Joy_Init( void )
Cvar_RegisterVariable( &joy_yaw_deadzone );
Cvar_RegisterVariable( &joy_axis_binding );
Cvar_RegisterVariable( &joy_found );
// we doesn't loaded config.cfg yet, so this cvar is not archive.
// change by +set joy_index in cmdline
Cvar_RegisterVariable( &joy_index );
Cvar_RegisterVariable( &joy_enable );
@ -417,7 +323,7 @@ void Joy_Init( void )
return;
}
Cvar_FullSet( "joy_found", va( "%d", Platform_JoyInit( joy_index.value )), FCVAR_READ_ONLY );
Platform_JoyInit();
joy_initialized = true;
}
@ -431,8 +337,5 @@ Shutdown joystick code
*/
void Joy_Shutdown( void )
{
if( joy_initialized )
{
Cvar_FullSet( "joy_found", 0, FCVAR_READ_ONLY );
}
Platform_JoyShutdown();
}

10
engine/client/input.h
View file

@ -105,17 +105,9 @@ typedef enum engineAxis_e
} engineAxis_t;
qboolean Joy_IsActive( void );
void Joy_HatMotionEvent( byte hat, byte value );
void Joy_AxisMotionEvent( byte axis, short value );
void Joy_KnownAxisMotionEvent( engineAxis_t engineAxis, short value );
void Joy_BallMotionEvent( byte ball, short xrel, short yrel );
void Joy_ButtonEvent( byte button, byte down );
void Joy_AddEvent( void );
void Joy_RemoveEvent( void );
void Joy_AxisMotionEvent( engineAxis_t engineAxis, short value );
void Joy_FinalizeMove( float *fw, float *side, float *dpitch, float *dyaw );
void Joy_Init( void );
void Joy_Shutdown( void );
void Joy_EnableTextInput(qboolean enable, qboolean force);
#endif//INPUT_H

2
engine/client/keys.c
View file

@ -1107,7 +1107,7 @@ static qboolean OSK_KeyEvent( int key, int down )
/*
=============
Joy_EnableTextInput
OSK_EnableTextInput
Enables built-in IME
=============

1
engine/common/host.c
View file

@ -201,7 +201,6 @@ static void Sys_PrintUsage( const char *exename )
O("-daemonize ", "run engine as a daemon")
#endif
#if XASH_SDL == 2
O("-sdl_joy_old_api ","use SDL legacy joystick API")
O("-sdl_renderer <n> ","use alternative SDL_Renderer for software")
#endif // XASH_SDL
#if XASH_ANDROID && !XASH_SDL

7
engine/platform/dos/in_dos.c
View file

@ -91,11 +91,16 @@ void GAME_EXPORT Platform_SetMousePos(int x, int y)
}
int Platform_JoyInit( int numjoy )
int Platform_JoyInit( void )
{
return 0;
}
void Platform_JoyShutdown( void )
{
}
void Platform_EnableTextInput( qboolean enable )
{
keystate.chars = enable;

10
engine/platform/linux/vid_fbdev.c
View file

@ -281,13 +281,19 @@ void GAME_EXPORT Platform_SetMousePos(int x, int y)
}
void Platform_Vibrate(float life, char flags)
void Platform_Vibrate( float life, char flags )
{
}
int Platform_JoyInit( int numjoy )
int Platform_JoyInit( void )
{
return 0;
}
void Platform_JoyShutdown( void )
{
}
#endif

3
engine/platform/platform.h
View file

@ -209,7 +209,8 @@ void Platform_Vibrate( float life, char flags );
==============================================================================
*/
// Gamepad support
int Platform_JoyInit( int numjoy ); // returns number of connected gamepads, negative if error
int Platform_JoyInit( void ); // returns number of connected gamepads, negative if error
void Platform_JoyShutdown( void );
// Text input
void Platform_EnableTextInput( qboolean enable );
key_modifier_t Platform_GetKeyModifiers( void );

152
engine/platform/sdl/events.c
View file

@ -88,52 +88,8 @@ GNU General Public License for more details.
#define SDL_SCANCODE_PRINTSCREEN SDLK_PRINT
#define SDL_SCANCODE_UNKNOWN SDLK_UNKNOWN
#define SDL_GetScancodeName( x ) "unknown"
#define SDL_JoystickID Uint8
#endif
static int SDLash_GameControllerButtonMapping[] =
{
#if XASH_NSWITCH // devkitPro/SDL has inverted Nintendo layout for SDL_GameController
K_B_BUTTON, K_A_BUTTON, K_Y_BUTTON, K_X_BUTTON,
#else
K_A_BUTTON, K_B_BUTTON, K_X_BUTTON, K_Y_BUTTON,
#endif
K_BACK_BUTTON, K_MODE_BUTTON, K_START_BUTTON,
K_LSTICK, K_RSTICK,
K_L1_BUTTON, K_R1_BUTTON,
K_DPAD_UP, K_DPAD_DOWN, K_DPAD_LEFT, K_DPAD_RIGHT,
K_MISC_BUTTON,
K_PADDLE1_BUTTON, K_PADDLE2_BUTTON, K_PADDLE3_BUTTON, K_PADDLE4_BUTTON,
K_TOUCHPAD,
};
// Swap axis to follow default axis binding:
// LeftX, LeftY, RightX, RightY, TriggerRight, TriggerLeft
static int SDLash_GameControllerAxisMapping[] =
{
JOY_AXIS_SIDE, // SDL_CONTROLLER_AXIS_LEFTX,
JOY_AXIS_FWD, // SDL_CONTROLLER_AXIS_LEFTY,
JOY_AXIS_PITCH, // SDL_CONTROLLER_AXIS_RIGHTX,
JOY_AXIS_YAW, // SDL_CONTROLLER_AXIS_RIGHTY,
JOY_AXIS_LT, // SDL_CONTROLLER_AXIS_TRIGGERLEFT,
JOY_AXIS_RT, // SDL_CONTROLLER_AXIS_TRIGGERRIGHT,
};
static qboolean SDLash_IsInstanceIDAGameController( SDL_JoystickID joyId )
{
#if !SDL_VERSION_ATLEAST( 2, 0, 4 )
// HACKHACK: if we're not initialized g_joy, then we're probably using gamecontroller api
// so return true
if( !g_joy )
return true;
return false;
#else
if( SDL_GameControllerFromInstanceID( joyId ) != NULL )
return true;
return false;
#endif
}
/*
=============
SDLash_KeyEvent
@ -408,50 +364,6 @@ static void SDLash_ActiveEvent( int gain )
}
}
#if SDL_VERSION_ATLEAST( 2, 0, 0 )
static size_t num_open_game_controllers = 0;
static void SDLash_GameController_Add( int index )
{
extern convar_t joy_enable; // private to input system
SDL_GameController *controller;
if( !joy_enable.value )
return;
controller = SDL_GameControllerOpen( index );
if( !controller )
{
Con_Reportf( "Failed to open SDL GameController %d: %s\n", index, SDL_GetError( ) );
SDL_ClearError( );
return;
}
#if SDL_VERSION_ATLEAST( 2, 0, 6 )
Con_Reportf( "Added controller: %s (%i:%i:%i)\n",
SDL_GameControllerName( controller ),
SDL_GameControllerGetVendor( controller ),
SDL_GameControllerGetProduct( controller ),
SDL_GameControllerGetProductVersion( controller ));
#endif // SDL_VERSION_ATLEAST( 2, 0, 6 )
++num_open_game_controllers;
if( num_open_game_controllers == 1 )
Joy_AddEvent( );
}
static void SDLash_GameController_Remove( SDL_JoystickID joystick_id )
{
Con_Reportf( "Removed controller %i\n", joystick_id );
// `Joy_RemoveEvent` sets `joy_found` to `0`.
// We only want to do this when all the game controllers have been removed.
--num_open_game_controllers;
if( num_open_game_controllers == 0 )
Joy_RemoveEvent( );
}
#endif
/*
=============
SDLash_EventFilter
@ -479,28 +391,6 @@ static void SDLash_EventHandler( SDL_Event *event )
SDLash_KeyEvent( event->key );
break;
/* Joystick events */
case SDL_JOYAXISMOTION:
if ( !SDLash_IsInstanceIDAGameController( event->jaxis.which ))
Joy_AxisMotionEvent( event->jaxis.axis, event->jaxis.value );
break;
case SDL_JOYBALLMOTION:
if ( !SDLash_IsInstanceIDAGameController( event->jball.which ))
Joy_BallMotionEvent( event->jball.ball, event->jball.xrel, event->jball.yrel );
break;
case SDL_JOYHATMOTION:
if ( !SDLash_IsInstanceIDAGameController( event->jhat.which ))
Joy_HatMotionEvent( event->jhat.hat, event->jhat.value );
break;
case SDL_JOYBUTTONDOWN:
case SDL_JOYBUTTONUP:
if ( !SDLash_IsInstanceIDAGameController( event->jbutton.which ))
Joy_ButtonEvent( event->jbutton.button, event->jbutton.state );
break;
case SDL_QUIT:
Sys_Quit( "caught SDL_QUIT" );
break;
@ -568,46 +458,20 @@ static void SDLash_EventHandler( SDL_Event *event )
SDLash_InputEvent( event->text );
break;
case SDL_JOYDEVICEADDED:
Joy_AddEvent();
break;
case SDL_JOYDEVICEREMOVED:
Joy_RemoveEvent();
break;
/* GameController API */
case SDL_CONTROLLERAXISMOTION:
{
if( !Joy_IsActive( ))
break;
if( event->caxis.axis >= 0 && event->caxis.axis < ARRAYSIZE( SDLash_GameControllerAxisMapping ))
{
Joy_KnownAxisMotionEvent( SDLash_GameControllerAxisMapping[event->caxis.axis], event->caxis.value );
}
break;
}
case SDL_CONTROLLERBUTTONDOWN:
case SDL_CONTROLLERBUTTONUP:
{
if( !Joy_IsActive( ))
break;
// TODO: Use joyinput funcs, for future multiple gamepads support
if( event->cbutton.button >= 0 && event->cbutton.button < ARRAYSIZE( SDLash_GameControllerButtonMapping ))
{
Key_Event( SDLash_GameControllerButtonMapping[event->cbutton.button], event->cbutton.state );
}
break;
}
case SDL_CONTROLLERDEVICEADDED:
SDLash_GameController_Add( event->cdevice.which );
break;
case SDL_CONTROLLERDEVICEREMOVED:
SDLash_GameController_Remove( event->cdevice.which );
case SDL_CONTROLLERDEVICEREMAPPED:
case SDL_CONTROLLERTOUCHPADDOWN:
case SDL_CONTROLLERTOUCHPADMOTION:
case SDL_CONTROLLERTOUCHPADUP:
case SDL_CONTROLLERSENSORUPDATE:
case SDL_CONTROLLERUPDATECOMPLETE_RESERVED_FOR_SDL3:
case SDL_CONTROLLERSTEAMHANDLEUPDATED:
SDLash_HandleGameControllerEvent( event );
break;
case SDL_WINDOWEVENT:

8
engine/platform/sdl/events.h
View file

@ -28,14 +28,16 @@ void GL_InitExtensions( void );
qboolean GL_DeleteContext( void );
void VID_SaveWindowSize( int width, int height, qboolean maximized );
// joystick events
extern SDL_Joystick *g_joy;
//
// in_sdl.c
//
void SDLash_InitCursors( void );
void SDLash_FreeCursors( void );
//
// joy_sdl.c
//
void SDLash_HandleGameControllerEvent( SDL_Event *ev );
#endif // XASH_SDL
#endif // KEYWRAPPER_H

154
engine/platform/sdl/in_sdl.c
View file

@ -1,6 +1,6 @@
/*
vid_sdl.c - SDL input component
Copyright (C) 2018 a1batross
in_sdl.c - SDL input component
Copyright (C) 2018-2025 a1batross
This program is free software: you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
@ -12,7 +12,6 @@ but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.
*/
#if !XASH_DEDICATED
#include <SDL.h>
#include "common.h"
@ -24,7 +23,6 @@ GNU General Public License for more details.
#include "sound.h"
#include "vid_common.h"
SDL_Joystick *g_joy = NULL;
#if !SDL_VERSION_ATLEAST( 2, 0, 0 )
#define SDL_WarpMouseInWindow( win, x, y ) SDL_WarpMouse( ( x ), ( y ) )
#else
@ -126,20 +124,6 @@ void Platform_SetClipboardText( const char *buffer )
#endif // SDL_VERSION_ATLEAST( 2, 0, 0 )
}
/*
=============
Platform_Vibrate
=============
*/
void Platform_Vibrate( float time, char flags )
{
#if SDL_VERSION_ATLEAST( 2, 0, 9 )
if( g_joy )
SDL_JoystickRumble( g_joy, 0xFFFF, 0xFFFF, time * 1000.0f );
#endif // SDL_VERSION_ATLEAST( 2, 0, 9 )
}
#if !XASH_PSVITA
/*
@ -157,138 +141,6 @@ void Platform_EnableTextInput( qboolean enable )
#endif // !XASH_PSVITA
/*
=============
SDLash_JoyInit_Old
=============
*/
static int SDLash_JoyInit_Old( int numjoy )
{
int num;
int i;
Con_Reportf( "Joystick: SDL\n" );
if( SDL_WasInit( SDL_INIT_JOYSTICK ) != SDL_INIT_JOYSTICK &&
SDL_InitSubSystem( SDL_INIT_JOYSTICK ) )
{
Con_Reportf( "Failed to initialize SDL Joysitck: %s\n", SDL_GetError() );
return 0;
}
if( g_joy )
{
SDL_JoystickClose( g_joy );
}
num = SDL_NumJoysticks();
if( num > 0 )
Con_Reportf( "%i joysticks found:\n", num );
else
{
Con_Reportf( "No joystick found.\n" );
return 0;
}
#if SDL_VERSION_ATLEAST( 2, 0, 0 )
for( i = 0; i < num; i++ )
Con_Reportf( "%i\t: %s\n", i, SDL_JoystickNameForIndex( i ) );
#endif // SDL_VERSION_ATLEAST( 2, 0, 0 )
Con_Reportf( "Pass +set joy_index N to command line, where N is number, to select active joystick\n" );
g_joy = SDL_JoystickOpen( numjoy );
if( !g_joy )
{
Con_Reportf( "Failed to select joystick: %s\n", SDL_GetError( ) );
return 0;
}
#if SDL_VERSION_ATLEAST( 2, 0, 0 )
Con_Reportf( "Selected joystick: %s\n"
"\tAxes: %i\n"
"\tHats: %i\n"
"\tButtons: %i\n"
"\tBalls: %i\n",
SDL_JoystickName( g_joy ), SDL_JoystickNumAxes( g_joy ), SDL_JoystickNumHats( g_joy ),
SDL_JoystickNumButtons( g_joy ), SDL_JoystickNumBalls( g_joy ) );
SDL_GameControllerEventState( SDL_DISABLE );
#endif // SDL_VERSION_ATLEAST( 2, 0, 0 )
SDL_JoystickEventState( SDL_ENABLE );
return num;
}
#if SDL_VERSION_ATLEAST( 2, 0, 0 )
static void SDLash_GameControllerAddMappings( const char *name )
{
fs_offset_t len = 0;
byte *p = FS_LoadFile( name, &len, false );
if( !p )
return;
if( len > 0 && len < INT32_MAX ) // function accepts int, SDL3 fixes this
{
SDL_RWops *rwops = SDL_RWFromConstMem( p, len );
SDL_GameControllerAddMappingsFromRW( rwops, true );
}
Mem_Free( p );
}
/*
=============
SDLash_JoyInit_New
=============
*/
static int SDLash_JoyInit_New( int numjoy )
{
int count, numJoysticks, i;
Con_Reportf( "Joystick: SDL GameController API\n" );
if( SDL_WasInit( SDL_INIT_GAMECONTROLLER ) != SDL_INIT_GAMECONTROLLER &&
SDL_InitSubSystem( SDL_INIT_GAMECONTROLLER ) )
{
Con_Reportf( "Failed to initialize SDL GameController API: %s\n", SDL_GetError() );
return 0;
}
SDLash_GameControllerAddMappings( "gamecontrollerdb.txt" ); // shipped in extras.pk3
SDLash_GameControllerAddMappings( "controllermappings.txt" );
count = 0;
numJoysticks = SDL_NumJoysticks();
for ( i = 0; i < numJoysticks; i++ )
if( SDL_IsGameController( i ) )
++count;
return count;
}
#endif // SDL_VERSION_ATLEAST( 2, 0, 0 )
/*
=============
Platform_JoyInit
=============
*/
int Platform_JoyInit( int numjoy )
{
#if SDL_VERSION_ATLEAST( 2, 0, 0 )
// SDL_Joystick is now an old API
// SDL_GameController is preferred
if( !Sys_CheckParm( "-sdl_joy_old_api" ) )
return SDLash_JoyInit_New(numjoy);
#endif // SDL_VERSION_ATLEAST( 2, 0, 0 )
return SDLash_JoyInit_Old(numjoy);
}
/*
========================
SDLash_InitCursors
@ -436,5 +288,3 @@ key_modifier_t Platform_GetKeyModifiers( void )
return KeyModifier_None;
#endif
}
#endif // XASH_DEDICATED

273
engine/platform/sdl/joy_sdl.c Normal file
View file

@ -0,0 +1,273 @@
/*
joy_sdl.c - SDL gamepads
Copyright (C) 2018-2025 a1batross
This program is free software: you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation, either version 3 of the License, or
(at your option) any later version.
This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.
*/
#include <SDL.h>
#if SDL_VERSION_ATLEAST( 2, 0, 0 )
#include "common.h"
#include "keydefs.h"
#include "input.h"
#include "client.h"
#include "events.h"
static const int g_button_mapping[] =
{
#if XASH_NSWITCH // devkitPro/SDL has inverted Nintendo layout for SDL_GameController
K_B_BUTTON, K_A_BUTTON, K_Y_BUTTON, K_X_BUTTON,
#else
K_A_BUTTON, K_B_BUTTON, K_X_BUTTON, K_Y_BUTTON,
#endif
K_BACK_BUTTON, K_MODE_BUTTON, K_START_BUTTON,
K_LSTICK, K_RSTICK,
K_L1_BUTTON, K_R1_BUTTON,
K_DPAD_UP, K_DPAD_DOWN, K_DPAD_LEFT, K_DPAD_RIGHT,
K_MISC_BUTTON,
K_PADDLE1_BUTTON, K_PADDLE2_BUTTON, K_PADDLE3_BUTTON, K_PADDLE4_BUTTON,
K_TOUCHPAD,
};
// Swap axis to follow default axis binding:
// LeftX, LeftY, RightX, RightY, TriggerRight, TriggerLeft
static const engineAxis_t g_axis_mapping[] =
{
JOY_AXIS_SIDE, // SDL_CONTROLLER_AXIS_LEFTX,
JOY_AXIS_FWD, // SDL_CONTROLLER_AXIS_LEFTY,
JOY_AXIS_PITCH, // SDL_CONTROLLER_AXIS_RIGHTX,
JOY_AXIS_YAW, // SDL_CONTROLLER_AXIS_RIGHTY,
JOY_AXIS_LT, // SDL_CONTROLLER_AXIS_TRIGGERLEFT,
JOY_AXIS_RT, // SDL_CONTROLLER_AXIS_TRIGGERRIGHT,
};
static SDL_JoystickID g_current_gamepad_id = -1; // used to send rumble to
static SDL_GameController *g_current_gamepad;
static SDL_GameController **g_gamepads;
static size_t g_num_gamepads;
static void SDLash_GameControllerAddMappings( const char *name )
{
fs_offset_t len = 0;
byte *p = FS_LoadFile( name, &len, false );
if( !p )
return;
if( len > 0 && len < INT32_MAX ) // function accepts int, SDL3 fixes this
{
SDL_RWops *rwops = SDL_RWFromConstMem( p, (int)len );
SDL_GameControllerAddMappingsFromRW( rwops, true );
}
Mem_Free( p );
}
static void SDLash_SetActiveGameController( SDL_JoystickID id )
{
g_current_gamepad_id = id;
g_current_gamepad = SDL_GameControllerFromInstanceID( id );
}
static void SDLash_GameControllerAdded( int device_index )
{
SDL_GameController *gc;
SDL_GameController **list;
gc = SDL_GameControllerOpen( device_index );
if( !gc )
{
Con_Printf( S_ERROR "SDL_GameControllerOpen: %s\n", SDL_GetError( ));
return;
}
list = Mem_Realloc( host.mempool, g_gamepads, sizeof( *list ) * ( g_num_gamepads + 1 ));
list[g_num_gamepads++] = gc;
g_gamepads = list;
// set as current device if none other set
if( g_current_gamepad_id < 0 )
{
SDL_Joystick *joy = SDL_GameControllerGetJoystick( gc );
if( joy )
SDLash_SetActiveGameController( SDL_JoystickInstanceID( joy ));
}
}
static void SDLash_GameControllerRemoved( SDL_JoystickID id )
{
size_t i;
if( id == g_current_gamepad_id )
{
g_current_gamepad_id = -1;
g_current_gamepad = NULL;
}
// now close the device
for( i = 0; i < g_num_gamepads; i++ )
{
SDL_GameController *gc = g_gamepads[i];
SDL_Joystick *joy;
if( !gc )
continue;
joy = SDL_GameControllerGetJoystick( gc );
if( !joy )
continue;
if( SDL_JoystickInstanceID( joy ) == id )
{
SDL_GameControllerClose( gc );
g_gamepads[i] = NULL;
}
}
}
/*
=============
SDLash_JoyInit
=============
*/
static int SDLash_JoyInit( void )
{
int count, numJoysticks, i;
Con_Reportf( "Joystick: SDL GameController API\n" );
if( SDL_WasInit( SDL_INIT_GAMECONTROLLER ) != SDL_INIT_GAMECONTROLLER &&
SDL_InitSubSystem( SDL_INIT_GAMECONTROLLER ))
{
Con_Reportf( "Failed to initialize SDL GameController API: %s\n", SDL_GetError() );
return 0;
}
SDLash_GameControllerAddMappings( "gamecontrollerdb.txt" ); // shipped in extras.pk3
SDLash_GameControllerAddMappings( "controllermappings.txt" );
count = 0;
numJoysticks = SDL_NumJoysticks();
for ( i = 0; i < numJoysticks; i++ )
{
if( SDL_IsGameController( i ))
++count;
}
return count;
}
void SDLash_HandleGameControllerEvent( SDL_Event *ev )
{
int x;
switch( ev->type )
{
case SDL_CONTROLLERAXISMOTION:
SDLash_SetActiveGameController( ev->caxis.which );
x = ev->caxis.axis;
if( x >= 0 && x < ARRAYSIZE( g_axis_mapping ))
Joy_AxisMotionEvent( g_axis_mapping[x], ev->caxis.value );
break;
case SDL_CONTROLLERBUTTONDOWN:
case SDL_CONTROLLERBUTTONUP:
SDLash_SetActiveGameController( ev->cbutton.which );
x = ev->cbutton.button;
if( x >= 0 && x < ARRAYSIZE( g_button_mapping ))
Key_Event( g_button_mapping[x], ev->cbutton.state );
break;
case SDL_CONTROLLERDEVICEREMOVED:
SDLash_GameControllerRemoved( ev->cdevice.which );
break;
case SDL_CONTROLLERDEVICEADDED:
SDLash_GameControllerAdded( ev->cdevice.which );
break;
}
}
/*
=============
Platform_Vibrate
=============
*/
void Platform_Vibrate( float time, char flags )
{
#if SDL_VERSION_ATLEAST( 2, 0, 9 )
SDL_GameController *gc = g_current_gamepad;
if( g_current_gamepad_id < 0 || !gc )
return;
// a1ba: time is in milliseconds but might be not enough
// to spin up rumble
SDL_GameControllerRumble( gc, 0xFFFF, 0xFFFF, (int)floor( time ));
#endif // SDL_VERSION_ATLEAST( 2, 0, 9 )
}
/*
=============
Platform_JoyInit
=============
*/
int Platform_JoyInit( void )
{
return SDLash_JoyInit();
}
/*
=============
Platform_JoyShutdown
=============
*/
void Platform_JoyShutdown( void )
{
size_t i;
for( i = 0; i < g_num_gamepads; i++ )
{
if( !g_gamepads[i] )
continue;
SDL_GameControllerClose( g_gamepads[i] );
g_gamepads[i] = NULL;
}
Mem_Free( g_gamepads );
g_gamepads = NULL;
g_num_gamepads = 0;
g_current_gamepad = NULL;
g_current_gamepad_id = -1;
SDL_QuitSubSystem( SDL_INIT_GAMECONTROLLER );
}
#else // SDL_VERSION_ATLEAST( 2, 0, 0 )
void Platform_Vibrate( float time, char flags )
{
}
int Platform_JoyInit( void )
{
return 0;
}
void Platform_JoyShutdown( void )
{
}
#endif