This software is provided 'as-is', without any express or implied

warranty. In no event will the authors be held liable for any damages

arising from the use of this software.

Permission is granted to anyone to use this software for any purpose,

including commercial applications, and to alter it and redistribute it

freely.

*/

/* Game controller mapping generator */

/* Gabriel Jacobo <gabomdq@gmail.com> */

#include <stdio.h>

#include <stdlib.h>

#include <string.h>

#include "SDL.h"

#ifndef SDL_JOYSTICK_DISABLED

/* Define this for verbose output while mapping controllers */

#define DEBUG_CONTROLLERMAP

#ifdef __IPHONEOS__

#define SCREEN_WIDTH 320

#define SCREEN_HEIGHT 480

#else

#define SCREEN_WIDTH 512

#endif

#define MARKER_BUTTON 1

#define MARKER_AXIS 2

enum

{

SDL_CONTROLLER_BINDING_AXIS_LEFTX_NEGATIVE,

SDL_CONTROLLER_BINDING_AXIS_LEFTX_POSITIVE,

SDL_CONTROLLER_BINDING_AXIS_LEFTY_NEGATIVE,

SDL_CONTROLLER_BINDING_AXIS_LEFTY_POSITIVE,

SDL_CONTROLLER_BINDING_AXIS_RIGHTX_NEGATIVE,

SDL_CONTROLLER_BINDING_AXIS_RIGHTX_POSITIVE,

SDL_CONTROLLER_BINDING_AXIS_RIGHTY_NEGATIVE,

SDL_CONTROLLER_BINDING_AXIS_RIGHTY_POSITIVE,

SDL_CONTROLLER_BINDING_AXIS_TRIGGERLEFT,

SDL_CONTROLLER_BINDING_AXIS_TRIGGERRIGHT,

SDL_CONTROLLER_BINDING_AXIS_MAX,

};

#define BINDING_COUNT (SDL_CONTROLLER_BUTTON_MAX + SDL_CONTROLLER_BINDING_AXIS_MAX)

static struct

{

int x, y;

double angle;

int marker;

} s_arrBindingDisplay[BINDING_COUNT] = {

{ 387, 167, 0.0, MARKER_BUTTON }, /* SDL_CONTROLLER_BUTTON_A */

{ 431, 132, 0.0, MARKER_BUTTON }, /* SDL_CONTROLLER_BUTTON_B */

{ 342, 132, 0.0, MARKER_BUTTON }, /* SDL_CONTROLLER_BUTTON_X */

{ 389, 101, 0.0, MARKER_BUTTON }, /* SDL_CONTROLLER_BUTTON_Y */

{ 174, 132, 0.0, MARKER_BUTTON }, /* SDL_CONTROLLER_BUTTON_BACK */

{ 233, 132, 0.0, MARKER_BUTTON }, /* SDL_CONTROLLER_BUTTON_GUIDE */

{ 289, 132, 0.0, MARKER_BUTTON }, /* SDL_CONTROLLER_BUTTON_START */

{ 75, 154, 0.0, MARKER_BUTTON }, /* SDL_CONTROLLER_BUTTON_LEFTSTICK */

{ 305, 230, 0.0, MARKER_BUTTON }, /* SDL_CONTROLLER_BUTTON_RIGHTSTICK */

{ 77, 40, 0.0, MARKER_BUTTON }, /* SDL_CONTROLLER_BUTTON_LEFTSHOULDER */

{ 396, 36, 0.0, MARKER_BUTTON }, /* SDL_CONTROLLER_BUTTON_RIGHTSHOULDER */

{ 154, 188, 0.0, MARKER_BUTTON }, /* SDL_CONTROLLER_BUTTON_DPAD_UP */

{ 154, 249, 0.0, MARKER_BUTTON }, /* SDL_CONTROLLER_BUTTON_DPAD_DOWN */

{ 116, 217, 0.0, MARKER_BUTTON }, /* SDL_CONTROLLER_BUTTON_DPAD_LEFT */

{ 186, 217, 0.0, MARKER_BUTTON }, /* SDL_CONTROLLER_BUTTON_DPAD_RIGHT */

{ 74, 153, 270.0, MARKER_AXIS }, /* SDL_CONTROLLER_BINDING_AXIS_LEFTX_NEGATIVE */

{ 74, 153, 90.0, MARKER_AXIS }, /* SDL_CONTROLLER_BINDING_AXIS_LEFTX_POSITIVE */

{ 74, 153, 0.0, MARKER_AXIS }, /* SDL_CONTROLLER_BINDING_AXIS_LEFTY_NEGATIVE */

{ 74, 153, 180.0, MARKER_AXIS }, /* SDL_CONTROLLER_BINDING_AXIS_LEFTY_POSITIVE */

{ 306, 231, 270.0, MARKER_AXIS }, /* SDL_CONTROLLER_BINDING_AXIS_RIGHTX_NEGATIVE */

{ 306, 231, 90.0, MARKER_AXIS }, /* SDL_CONTROLLER_BINDING_AXIS_RIGHTX_POSITIVE */

{ 306, 231, 0.0, MARKER_AXIS }, /* SDL_CONTROLLER_BINDING_AXIS_RIGHTY_NEGATIVE */

{ 306, 231, 180.0, MARKER_AXIS }, /* SDL_CONTROLLER_BINDING_AXIS_RIGHTY_POSITIVE */

{ 91, -20, 180.0, MARKER_AXIS }, /* SDL_CONTROLLER_BINDING_AXIS_TRIGGERLEFT */

{ 375, -20, 180.0, MARKER_AXIS }, /* SDL_CONTROLLER_BINDING_AXIS_TRIGGERRIGHT */

};

static int s_arrBindingOrder[BINDING_COUNT] = {

SDL_CONTROLLER_BUTTON_A,

SDL_CONTROLLER_BUTTON_B,

SDL_CONTROLLER_BUTTON_Y,

SDL_CONTROLLER_BUTTON_X,

SDL_CONTROLLER_BUTTON_MAX + SDL_CONTROLLER_BINDING_AXIS_LEFTX_NEGATIVE,

SDL_CONTROLLER_BUTTON_MAX + SDL_CONTROLLER_BINDING_AXIS_LEFTX_POSITIVE,

SDL_CONTROLLER_BUTTON_MAX + SDL_CONTROLLER_BINDING_AXIS_LEFTY_NEGATIVE,

SDL_CONTROLLER_BUTTON_MAX + SDL_CONTROLLER_BINDING_AXIS_LEFTY_POSITIVE,

SDL_CONTROLLER_BUTTON_MAX + SDL_CONTROLLER_BINDING_AXIS_RIGHTX_NEGATIVE,

SDL_CONTROLLER_BUTTON_MAX + SDL_CONTROLLER_BINDING_AXIS_RIGHTX_POSITIVE,

SDL_CONTROLLER_BUTTON_MAX + SDL_CONTROLLER_BINDING_AXIS_RIGHTY_NEGATIVE,

SDL_CONTROLLER_BUTTON_MAX + SDL_CONTROLLER_BINDING_AXIS_RIGHTY_POSITIVE,

SDL_CONTROLLER_BUTTON_RIGHTSTICK,

SDL_CONTROLLER_BUTTON_LEFTSHOULDER,

SDL_CONTROLLER_BUTTON_DPAD_UP,

SDL_CONTROLLER_BUTTON_DPAD_RIGHT,

SDL_CONTROLLER_BUTTON_DPAD_DOWN,

SDL_CONTROLLER_BUTTON_DPAD_LEFT,

SDL_CONTROLLER_BUTTON_BACK,

SDL_CONTROLLER_BUTTON_GUIDE,

SDL_CONTROLLER_BUTTON_START,

};

typedef struct

{

SDL_GameControllerBindType bindType;

union

{

int button;

struct {

int axis;

int axis_min;

int axis_max;

} axis;

struct {

int hat;

int hat_mask;

} hat;

} value;

SDL_bool committed;

} SDL_GameControllerExtendedBind;

static SDL_GameControllerExtendedBind s_arrBindings[BINDING_COUNT];

typedef struct

{

SDL_bool m_bMoving;

int m_nStartingValue;

int m_nFarthestValue;

} AxisState;

static int s_nNumAxes;

static AxisState *s_arrAxisState;

static int s_iCurrentBinding;

static Uint32 s_unPendingAdvanceTime;

static SDL_bool s_bBindingComplete;

SDL_Texture *

{

SDL_Surface *temp;

SDL_Texture *texture;

/* Load the sprite image */

temp = SDL_LoadBMP(file);

if (temp == NULL) {

SDL_LogError(SDL_LOG_CATEGORY_APPLICATION, "Couldn't load %s: %s", file, SDL_GetError());

return NULL;

}

/* Set transparent pixel as the pixel at (0,0) */

if (transparent) {

if (temp->format->palette) {

SDL_SetColorKey(temp, SDL_TRUE, *(Uint8 *) temp->pixels);

}

}

/* Create textures from the image */

texture = SDL_CreateTextureFromSurface(renderer, temp);

if (!texture) {

SDL_LogError(SDL_LOG_CATEGORY_APPLICATION, "Couldn't create texture: %s\n", SDL_GetError());

SDL_FreeSurface(temp);

return NULL;

}

SDL_FreeSurface(temp);

/* We're ready to roll. :) */

return texture;

}

static int

StandardizeAxisValue(int nValue)

if (nValue > SDL_JOYSTICK_AXIS_MAX/2) {

return SDL_JOYSTICK_AXIS_MAX;

} else if (nValue < SDL_JOYSTICK_AXIS_MIN/2) {

return SDL_JOYSTICK_AXIS_MIN;

} else {

return 0;

}

}

static void

SetCurrentBinding(int iBinding)

{

if (iBinding < 0) {

return;

}

if (iBinding == BINDING_COUNT) {

s_bBindingComplete = SDL_TRUE;

return;

}

s_iCurrentBinding = iBinding;

pBinding = &s_arrBindings[s_arrBindingOrder[s_iCurrentBinding]];

SDL_zerop(pBinding);

for (iIndex = 0; iIndex < s_nNumAxes; ++iIndex) {

s_arrAxisState[iIndex].m_nFarthestValue = s_arrAxisState[iIndex].m_nStartingValue;

}

s_unPendingAdvanceTime = 0;

}

static SDL_bool

BBindingContainsBinding(const SDL_GameControllerExtendedBind *pBindingA, const SDL_GameControllerExtendedBind *pBindingB)

{

if (pBindingA->bindType != pBindingB->bindType)

{

return SDL_FALSE;

}

switch (pBindingA->bindType)

{

case SDL_CONTROLLER_BINDTYPE_AXIS:

if (pBindingA->value.axis.axis != pBindingB->value.axis.axis) {

return SDL_FALSE;

}

if (!pBindingA->committed) {

return SDL_FALSE;

}

{

int minA = SDL_min(pBindingA->value.axis.axis_min, pBindingA->value.axis.axis_max);

int maxA = SDL_max(pBindingA->value.axis.axis_min, pBindingA->value.axis.axis_max);

int minB = SDL_min(pBindingB->value.axis.axis_min, pBindingB->value.axis.axis_max);

int maxB = SDL_max(pBindingB->value.axis.axis_min, pBindingB->value.axis.axis_max);

return (minA <= minB && maxA >= maxB);

}

/* Not reached */

default:

return SDL_memcmp(pBindingA, pBindingB, sizeof(*pBindingA)) == 0;

}

}

int iIndex;

int iCurrentElement = s_arrBindingOrder[s_iCurrentBinding];

/* Do we already have this binding? */

for (iIndex = 0; iIndex < SDL_arraysize(s_arrBindings); ++iIndex) {

pCurrent = &s_arrBindings[iIndex];

if (BBindingContainsBinding(pCurrent, pBinding)) {

if (iIndex == SDL_CONTROLLER_BUTTON_A && iCurrentElement != SDL_CONTROLLER_BUTTON_B) {

/* Skip to the next binding */

SetCurrentBinding(s_iCurrentBinding + 1);

return;

}

if (iIndex == SDL_CONTROLLER_BUTTON_B) {

/* Go back to the previous binding */

SetCurrentBinding(s_iCurrentBinding - 1);

return;

}

/* Already have this binding, ignore it */

return;

}

}

#ifdef DEBUG_CONTROLLERMAP

switch ( pBinding->bindType )

{

case SDL_CONTROLLER_BINDTYPE_NONE:

break;

case SDL_CONTROLLER_BINDTYPE_BUTTON:

SDL_Log("Configuring button binding for button %d\n", pBinding->value.button);

break;

case SDL_CONTROLLER_BINDTYPE_AXIS:

SDL_Log("Configuring axis binding for axis %d %d/%d committed = %s\n", pBinding->value.axis.axis, pBinding->value.axis.axis_min, pBinding->value.axis.axis_max, pBinding->committed ? "true" : "false");

break;

case SDL_CONTROLLER_BINDTYPE_HAT:

SDL_Log("Configuring hat binding for hat %d %d\n", pBinding->value.hat.hat, pBinding->value.hat.hat_mask);

break;

}

#endif /* DEBUG_CONTROLLERMAP */

/* Should the new binding override the existing one? */

pCurrent = &s_arrBindings[iCurrentElement];

if (pCurrent->bindType != SDL_CONTROLLER_BINDTYPE_NONE) {

SDL_bool bNativeDPad, bCurrentDPad;

SDL_bool bNativeAxis, bCurrentAxis;

bNativeDPad = (iCurrentElement == SDL_CONTROLLER_BUTTON_DPAD_UP ||

iCurrentElement == SDL_CONTROLLER_BUTTON_DPAD_DOWN ||

iCurrentElement == SDL_CONTROLLER_BUTTON_DPAD_LEFT ||

iCurrentElement == SDL_CONTROLLER_BUTTON_DPAD_RIGHT);

bCurrentDPad = (pCurrent->bindType == SDL_CONTROLLER_BINDTYPE_HAT);

/* We already have a binding of the type we want, ignore the new one */

return;

}

bNativeAxis = (iCurrentElement >= SDL_CONTROLLER_BUTTON_MAX);

bCurrentAxis = (pCurrent->bindType == SDL_CONTROLLER_BINDTYPE_AXIS);

if (bNativeAxis == bCurrentAxis &&

(pBinding->bindType != SDL_CONTROLLER_BINDTYPE_AXIS ||

pBinding->value.axis.axis != pCurrent->value.axis.axis)) {

/* We already have a binding of the type we want, ignore the new one */

return;

}

}

*pCurrent = *pBinding;

if (pBinding->committed) {

s_unPendingAdvanceTime = SDL_GetTicks();

} else {

s_unPendingAdvanceTime = 0;

}

}

static SDL_bool

BMergeAxisBindings(int iIndex)

{

SDL_GameControllerExtendedBind *pBindingA = &s_arrBindings[iIndex];

SDL_GameControllerExtendedBind *pBindingB = &s_arrBindings[iIndex+1];

if (pBindingA->bindType == SDL_CONTROLLER_BINDTYPE_AXIS &&

pBindingB->bindType == SDL_CONTROLLER_BINDTYPE_AXIS &&

pBindingA->value.axis.axis == pBindingB->value.axis.axis) {

if (pBindingA->value.axis.axis_min == pBindingB->value.axis.axis_min) {

pBindingA->value.axis.axis_min = pBindingA->value.axis.axis_max;

pBindingA->value.axis.axis_max = pBindingB->value.axis.axis_max;

pBindingB->bindType = SDL_CONTROLLER_BINDTYPE_NONE;

return SDL_TRUE;

}

}

return SDL_FALSE;

}

WatchJoystick(SDL_Joystick * joystick)

{

SDL_Window *window = NULL;

SDL_Renderer *screen = NULL;

SDL_Texture *background, *button, *axis, *marker;

const char *name = NULL;

SDL_Event event;

SDL_Rect dst;

Uint8 alpha=200, alpha_step = -1;

Uint32 alpha_ticks = 0;

/* Create a window to display joystick axis position */

window = SDL_CreateWindow("Game Controller Map", SDL_WINDOWPOS_CENTERED,

SDL_WINDOWPOS_CENTERED, SCREEN_WIDTH,

SCREEN_HEIGHT, 0);

if (window == NULL) {

SDL_LogError(SDL_LOG_CATEGORY_APPLICATION, "Couldn't create window: %s\n", SDL_GetError());

}

screen = SDL_CreateRenderer(window, -1, 0);

if (screen == NULL) {

SDL_LogError(SDL_LOG_CATEGORY_APPLICATION, "Couldn't create renderer: %s\n", SDL_GetError());

SDL_DestroyWindow(window);

}

background = LoadTexture(screen, "controllermap.bmp", SDL_FALSE);

button = LoadTexture(screen, "button.bmp", SDL_TRUE);

axis = LoadTexture(screen, "axis.bmp", SDL_TRUE);

SDL_RaiseWindow(window);

/* scale for platforms that don't give you the window size you asked for. */

SDL_RenderSetLogicalSize(screen, SCREEN_WIDTH, SCREEN_HEIGHT);

/* Print info about the joystick we are watching */

name = SDL_JoystickName(joystick);

SDL_Log("Watching joystick %d: (%s)\n", SDL_JoystickInstanceID(joystick),

name ? name : "Unknown Joystick");

SDL_Log("Joystick has %d axes, %d hats, %d balls, and %d buttons\n",

SDL_JoystickNumAxes(joystick), SDL_JoystickNumHats(joystick),

SDL_JoystickNumBalls(joystick), SDL_JoystickNumButtons(joystick));

SDL_Log("\n\n\

====================================================================================\n\

Press the buttons on your controller when indicated\n\

(Your controller may look different than the picture)\n\

If you want to correct a mistake, press backspace or the back button on your device\n\

To skip a button, press SPACE or click/touch the screen\n\

To exit, press ESC\n\

====================================================================================\n");

nJoystickID = SDL_JoystickInstanceID(joystick);

/* Skip any spurious events at start */

while (SDL_PollEvent(&event) > 0) {

continue;

}

while (!done && !s_bBindingComplete) {

int iElement = s_arrBindingOrder[s_iCurrentBinding];

switch (s_arrBindingDisplay[iElement].marker) {

case MARKER_AXIS:

marker = axis;

break;

case MARKER_BUTTON:

marker = button;

break;

default:

break;

}

dst.x = s_arrBindingDisplay[iElement].x;

dst.y = s_arrBindingDisplay[iElement].y;

SDL_QueryTexture(marker, NULL, NULL, &dst.w, &dst.h);

if (SDL_GetTicks() - alpha_ticks > 5) {

alpha_ticks = SDL_GetTicks();

alpha += alpha_step;

if (alpha == 255) {

alpha_step = -1;

if (alpha < 128) {

alpha_step = 1;

}

}

SDL_SetRenderDrawColor(screen, 0xFF, 0xFF, 0xFF, SDL_ALPHA_OPAQUE);

SDL_RenderClear(screen);

SDL_RenderCopy(screen, background, NULL, NULL);

SDL_SetTextureAlphaMod(marker, alpha);

SDL_SetTextureColorMod(marker, 10, 255, 21);

SDL_RenderCopyEx(screen, marker, NULL, &dst, s_arrBindingDisplay[iElement].angle, NULL, SDL_FLIP_NONE);

SDL_RenderPresent(screen);

while (SDL_PollEvent(&event) > 0) {

switch (event.type) {

case SDL_JOYDEVICEREMOVED:

if (event.jaxis.which == nJoystickID) {

done = SDL_TRUE;

}

break;

case SDL_JOYAXISMOTION:

if (event.jaxis.which == nJoystickID) {

AxisState *pAxisState = &s_arrAxisState[event.jaxis.axis];

int nValue = event.jaxis.value;

int nCurrentDistance, nFarthestDistance;

if (!pAxisState->m_bMoving) {

Sint16 nInitialValue;

pAxisState->m_bMoving = SDL_JoystickGetAxisInitialState(joystick, event.jaxis.axis, &nInitialValue);

pAxisState->m_nStartingValue = nInitialValue;

pAxisState->m_nFarthestValue = nInitialValue;

} else if (SDL_abs(nValue - pAxisState->m_nLastValue) <= MAX_ALLOWED_JITTER) {

break;

} else {

pAxisState->m_nLastValue = nValue;

}

nCurrentDistance = SDL_abs(nValue - pAxisState->m_nStartingValue);

nFarthestDistance = SDL_abs(pAxisState->m_nFarthestValue - pAxisState->m_nStartingValue);

if (nCurrentDistance > nFarthestDistance) {

pAxisState->m_nFarthestValue = nValue;

#ifdef DEBUG_CONTROLLERMAP

SDL_Log("AXIS %d nValue %d nCurrentDistance %d nFarthestDistance %d\n", event.jaxis.axis, nValue, nCurrentDistance, nFarthestDistance);

#endif

if (nFarthestDistance >= 16000) {

/* If we've gone out far enough and started to come back, let's bind this axis */

SDL_bool bCommitBinding = (nCurrentDistance <= 10000) ? SDL_TRUE : SDL_FALSE;

SDL_zero(binding);

binding.bindType = SDL_CONTROLLER_BINDTYPE_AXIS;

binding.value.axis.axis = event.jaxis.axis;

binding.value.axis.axis_min = StandardizeAxisValue(pAxisState->m_nStartingValue);

binding.value.axis.axis_max = StandardizeAxisValue(pAxisState->m_nFarthestValue);

}

break;

case SDL_JOYHATMOTION:

if (event.jhat.which == nJoystickID) {

if (event.jhat.value != SDL_HAT_CENTERED) {

#ifdef DEBUG_CONTROLLERMAP

SDL_Log("HAT %d %d\n", event.jhat.hat, event.jhat.value);

#endif

SDL_zero(binding);

binding.bindType = SDL_CONTROLLER_BINDTYPE_HAT;

binding.value.hat.hat = event.jhat.hat;

binding.value.hat.hat_mask = event.jhat.value;

}

break;

case SDL_JOYBALLMOTION:

break;

case SDL_JOYBUTTONDOWN:

if (event.jbutton.which == nJoystickID) {

#ifdef DEBUG_CONTROLLERMAP

SDL_Log("BUTTON %d\n", event.jbutton.button);

#endif

SDL_zero(binding);

binding.bindType = SDL_CONTROLLER_BINDTYPE_BUTTON;

binding.value.button = event.jbutton.button;

ConfigureBinding(&binding);

}

break;

case SDL_FINGERDOWN:

case SDL_MOUSEBUTTONDOWN:

/* Skip this step */

SetCurrentBinding(s_iCurrentBinding + 1);

break;

case SDL_KEYDOWN:

if (event.key.keysym.sym == SDLK_BACKSPACE || event.key.keysym.sym == SDLK_AC_BACK) {

SetCurrentBinding(s_iCurrentBinding - 1);

}

if (event.key.keysym.sym == SDLK_SPACE) {

SetCurrentBinding(s_iCurrentBinding + 1);

}

if ((event.key.keysym.sym != SDLK_ESCAPE)) {

break;

}

/* Fall through to signal quit */

case SDL_QUIT:

done = SDL_TRUE;

break;

default:

break;

}

}

SDL_Delay(15);

/* Wait 100 ms for joystick events to stop coming in,

in case a controller sends multiple events for a single control (e.g. axis and button for trigger)

*/

if (s_unPendingAdvanceTime && SDL_GetTicks() - s_unPendingAdvanceTime >= 100) {

SetCurrentBinding(s_iCurrentBinding + 1);

}

}

if (s_bBindingComplete) {

char mapping[1024];

char trimmed_name[128];

char *spot;

int iIndex;

char pszElement[12];

SDL_strlcpy(trimmed_name, name, SDL_arraysize(trimmed_name));

while (SDL_isspace(trimmed_name[0])) {

SDL_memmove(&trimmed_name[0], &trimmed_name[1], SDL_strlen(trimmed_name));

}

while (trimmed_name[0] && SDL_isspace(trimmed_name[SDL_strlen(trimmed_name) - 1])) {

trimmed_name[SDL_strlen(trimmed_name) - 1] = '\0';

}

while ((spot = SDL_strchr(trimmed_name, ',')) != NULL) {

SDL_memmove(spot, spot + 1, SDL_strlen(spot));

}

/* Initialize mapping with GUID and name */

SDL_JoystickGetGUIDString(SDL_JoystickGetGUID(joystick), mapping, SDL_arraysize(mapping));

SDL_strlcat(mapping, ",", SDL_arraysize(mapping));

SDL_strlcat(mapping, trimmed_name, SDL_arraysize(mapping));

SDL_strlcat(mapping, ",", SDL_arraysize(mapping));

SDL_strlcat(mapping, "platform:", SDL_arraysize(mapping));

SDL_strlcat(mapping, SDL_GetPlatform(), SDL_arraysize(mapping));

SDL_strlcat(mapping, ",", SDL_arraysize(mapping));

for (iIndex = 0; iIndex < SDL_arraysize(s_arrBindings); ++iIndex) {

if (pBinding->bindType == SDL_CONTROLLER_BINDTYPE_NONE) {

continue;

}

if (iIndex < SDL_CONTROLLER_BUTTON_MAX) {

SDL_GameControllerButton eButton = (SDL_GameControllerButton)iIndex;

SDL_strlcat(mapping, SDL_GameControllerGetStringForButton(eButton), SDL_arraysize(mapping));

} else {

const char *pszAxisName;

switch (iIndex - SDL_CONTROLLER_BUTTON_MAX) {

case SDL_CONTROLLER_BINDING_AXIS_LEFTX_NEGATIVE:

if (!BMergeAxisBindings(iIndex)) {

SDL_strlcat(mapping, "-", SDL_arraysize(mapping));

}

pszAxisName = SDL_GameControllerGetStringForAxis(SDL_CONTROLLER_AXIS_LEFTX);

break;

case SDL_CONTROLLER_BINDING_AXIS_LEFTX_POSITIVE:

SDL_strlcat(mapping, "+", SDL_arraysize(mapping));

pszAxisName = SDL_GameControllerGetStringForAxis(SDL_CONTROLLER_AXIS_LEFTX);

break;

case SDL_CONTROLLER_BINDING_AXIS_LEFTY_NEGATIVE:

if (!BMergeAxisBindings(iIndex)) {

SDL_strlcat(mapping, "-", SDL_arraysize(mapping));

}

pszAxisName = SDL_GameControllerGetStringForAxis(SDL_CONTROLLER_AXIS_LEFTY);

break;

case SDL_CONTROLLER_BINDING_AXIS_LEFTY_POSITIVE:

SDL_strlcat(mapping, "+", SDL_arraysize(mapping));

pszAxisName = SDL_GameControllerGetStringForAxis(SDL_CONTROLLER_AXIS_LEFTY);

break;

case SDL_CONTROLLER_BINDING_AXIS_RIGHTX_NEGATIVE:

if (!BMergeAxisBindings(iIndex)) {

SDL_strlcat(mapping, "-", SDL_arraysize(mapping));

}

pszAxisName = SDL_GameControllerGetStringForAxis(SDL_CONTROLLER_AXIS_RIGHTX);

break;

case SDL_CONTROLLER_BINDING_AXIS_RIGHTX_POSITIVE:

SDL_strlcat(mapping, "+", SDL_arraysize(mapping));

pszAxisName = SDL_GameControllerGetStringForAxis(SDL_CONTROLLER_AXIS_RIGHTX);

break;

case SDL_CONTROLLER_BINDING_AXIS_RIGHTY_NEGATIVE:

if (!BMergeAxisBindings(iIndex)) {

SDL_strlcat(mapping, "-", SDL_arraysize(mapping));

}

pszAxisName = SDL_GameControllerGetStringForAxis(SDL_CONTROLLER_AXIS_RIGHTY);

break;

case SDL_CONTROLLER_BINDING_AXIS_RIGHTY_POSITIVE:

SDL_strlcat(mapping, "+", SDL_arraysize(mapping));

pszAxisName = SDL_GameControllerGetStringForAxis(SDL_CONTROLLER_AXIS_RIGHTY);

break;

case SDL_CONTROLLER_BINDING_AXIS_TRIGGERLEFT:

pszAxisName = SDL_GameControllerGetStringForAxis(SDL_CONTROLLER_AXIS_TRIGGERLEFT);

break;

case SDL_CONTROLLER_BINDING_AXIS_TRIGGERRIGHT:

pszAxisName = SDL_GameControllerGetStringForAxis(SDL_CONTROLLER_AXIS_TRIGGERRIGHT);

break;

}

SDL_strlcat(mapping, pszAxisName, SDL_arraysize(mapping));

}

SDL_strlcat(mapping, ":", SDL_arraysize(mapping));

pszElement[0] = '\0';

switch (pBinding->bindType) {

case SDL_CONTROLLER_BINDTYPE_BUTTON:

SDL_snprintf(pszElement, sizeof(pszElement), "b%d", pBinding->value.button);

break;

case SDL_CONTROLLER_BINDTYPE_AXIS:

if (pBinding->value.axis.axis_min == 0 && pBinding->value.axis.axis_max == SDL_JOYSTICK_AXIS_MIN) {

/* The negative half axis */

SDL_snprintf(pszElement, sizeof(pszElement), "-a%d", pBinding->value.axis.axis);

} else if (pBinding->value.axis.axis_min == 0 && pBinding->value.axis.axis_max == SDL_JOYSTICK_AXIS_MAX) {

/* The positive half axis */

SDL_snprintf(pszElement, sizeof(pszElement), "+a%d", pBinding->value.axis.axis);

} else {

SDL_snprintf(pszElement, sizeof(pszElement), "a%d", pBinding->value.axis.axis);

if (pBinding->value.axis.axis_min > pBinding->value.axis.axis_max) {

/* Invert the axis */

SDL_strlcat(pszElement, "~", SDL_arraysize(pszElement));

}

}

break;

case SDL_CONTROLLER_BINDTYPE_HAT:

SDL_snprintf(pszElement, sizeof(pszElement), "h%d.%d", pBinding->value.hat.hat, pBinding->value.hat.hat_mask);

break;

default:

SDL_assert(!"Unknown bind type");

break;

}

SDL_strlcat(mapping, pszElement, SDL_arraysize(mapping));

SDL_strlcat(mapping, ",", SDL_arraysize(mapping));

}

SDL_Log("Mapping:\n\n%s\n\n", mapping);

/* Print to stdout as well so the user can cat the output somewhere */

printf("%s\n", mapping);

}

SDL_free(s_arrAxisState);

s_arrAxisState = NULL;

SDL_DestroyRenderer(screen);

SDL_DestroyWindow(window);

}

int

main(int argc, char *argv[])

{

const char *name;

int i;

SDL_Joystick *joystick;

/* Enable standard application logging */

/* Initialize SDL (Note: video is required to start event loop) */

if (SDL_Init(SDL_INIT_VIDEO | SDL_INIT_JOYSTICK) < 0) {

SDL_LogError(SDL_LOG_CATEGORY_APPLICATION, "Couldn't initialize SDL: %s\n", SDL_GetError());

exit(1);

}

/* Print information about the joysticks */

SDL_Log("There are %d joysticks attached\n", SDL_NumJoysticks());

for (i = 0; i < SDL_NumJoysticks(); ++i) {

name = SDL_JoystickNameForIndex(i);

SDL_Log("Joystick %d: %s\n", i, name ? name : "Unknown Joystick");

joystick = SDL_JoystickOpen(i);

if (joystick == NULL) {

SDL_LogError(SDL_LOG_CATEGORY_APPLICATION, "SDL_JoystickOpen(%d) failed: %s\n", i,

SDL_GetError());

} else {

char guid[64];

SDL_JoystickGetGUIDString(SDL_JoystickGetGUID(joystick),

guid, sizeof (guid));

SDL_Log(" axes: %d\n", SDL_JoystickNumAxes(joystick));

SDL_Log(" balls: %d\n", SDL_JoystickNumBalls(joystick));

SDL_Log(" hats: %d\n", SDL_JoystickNumHats(joystick));

SDL_Log(" buttons: %d\n", SDL_JoystickNumButtons(joystick));

SDL_Log("instance id: %d\n", SDL_JoystickInstanceID(joystick));

SDL_Log(" guid: %s\n", guid);

SDL_JoystickClose(joystick);

}

}

#ifdef __ANDROID__

if (SDL_NumJoysticks() > 0) {

#else

if (argv[1]) {

#endif

int device;

#ifdef __ANDROID__

device = 0;

#else

device = atoi(argv[1]);

#endif

joystick = SDL_JoystickOpen(device);

if (joystick == NULL) {

SDL_Log("Couldn't open joystick %d: %s\n", device, SDL_GetError());

} else {

WatchJoystick(joystick);

SDL_JoystickClose(joystick);

}

}

else {

SDL_Log("\n\nUsage: ./controllermap number\nFor example: ./controllermap 0\nOr: ./controllermap 0 >> gamecontrollerdb.txt");

}

SDL_QuitSubSystem(SDL_INIT_VIDEO | SDL_INIT_JOYSTICK);

return 0;

}

#else

int

main(int argc, char *argv[])

{

SDL_LogError(SDL_LOG_CATEGORY_APPLICATION, "SDL compiled without Joystick support.\n");

}

#endif

/* vi: set ts=4 sw=4 expandtab: */