test/controllermap.c
author Philipp Wiesemann <philipp.wiesemann@arcor.de>
Wed, 25 Dec 2013 00:04:31 +0100
changeset 8077 05bbcc1056e6
parent 8048 a9c5ddad50b0
child 8078 ef59ad725ac5
permissions -rw-r--r--
Fixed unused local variable warning in test program source.
     1 /*
     2   Copyright (C) 1997-2013 Sam Lantinga <slouken@libsdl.org>
     3 
     4   This software is provided 'as-is', without any express or implied
     5   warranty.  In no event will the authors be held liable for any damages
     6   arising from the use of this software.
     7 
     8   Permission is granted to anyone to use this software for any purpose,
     9   including commercial applications, and to alter it and redistribute it
    10   freely.
    11 */
    12 
    13 /* Game controller mapping generator */
    14 /* Gabriel Jacobo <gabomdq@gmail.com> */
    15 
    16 #include <stdio.h>
    17 #include <stdlib.h>
    18 #include <string.h>
    19 
    20 #include "SDL.h"
    21 
    22 #ifndef SDL_JOYSTICK_DISABLED
    23 
    24 #ifdef __IPHONEOS__
    25 #define SCREEN_WIDTH    320
    26 #define SCREEN_HEIGHT   480
    27 #else
    28 #define SCREEN_WIDTH    512
    29 #define SCREEN_HEIGHT   317
    30 #endif
    31 
    32 #define MAP_WIDTH 512
    33 #define MAP_HEIGHT 317
    34 
    35 #define MARKER_BUTTON 1
    36 #define MARKER_AXIS 2
    37 
    38 typedef struct MappingStep
    39 {
    40     int x, y;
    41     double angle;
    42     int marker;
    43     char *field;
    44     int axis, button, hat, hat_value;
    45     char mapping[4096];
    46 }MappingStep;
    47 
    48 
    49 SDL_Texture *
    50 LoadTexture(SDL_Renderer *renderer, char *file, SDL_bool transparent)
    51 {
    52     SDL_Surface *temp;
    53     SDL_Texture *texture;
    54 
    55     /* Load the sprite image */
    56     temp = SDL_LoadBMP(file);
    57     if (temp == NULL) {
    58         SDL_LogError(SDL_LOG_CATEGORY_APPLICATION, "Couldn't load %s: %s", file, SDL_GetError());
    59         return NULL;
    60     }
    61 
    62     /* Set transparent pixel as the pixel at (0,0) */
    63     if (transparent) {
    64         if (temp->format->palette) {
    65             SDL_SetColorKey(temp, SDL_TRUE, *(Uint8 *) temp->pixels);
    66         } else {
    67             switch (temp->format->BitsPerPixel) {
    68             case 15:
    69                 SDL_SetColorKey(temp, SDL_TRUE,
    70                                 (*(Uint16 *) temp->pixels) & 0x00007FFF);
    71                 break;
    72             case 16:
    73                 SDL_SetColorKey(temp, SDL_TRUE, *(Uint16 *) temp->pixels);
    74                 break;
    75             case 24:
    76                 SDL_SetColorKey(temp, SDL_TRUE,
    77                                 (*(Uint32 *) temp->pixels) & 0x00FFFFFF);
    78                 break;
    79             case 32:
    80                 SDL_SetColorKey(temp, SDL_TRUE, *(Uint32 *) temp->pixels);
    81                 break;
    82             }
    83         }
    84     }
    85 
    86     /* Create textures from the image */
    87     texture = SDL_CreateTextureFromSurface(renderer, temp);
    88     if (!texture) {
    89         SDL_LogError(SDL_LOG_CATEGORY_APPLICATION, "Couldn't create texture: %s\n", SDL_GetError());
    90         SDL_FreeSurface(temp);
    91         return NULL;
    92     }
    93     SDL_FreeSurface(temp);
    94 
    95     /* We're ready to roll. :) */
    96     return texture;
    97 }
    98 
    99 static void
   100 DrawRect(SDL_Renderer *r, const int x, const int y, const int w, const int h)
   101 {
   102     const SDL_Rect area = { x, y, w, h };
   103     SDL_RenderFillRect(r, &area);
   104 }
   105 
   106 static SDL_bool
   107 WatchJoystick(SDL_Joystick * joystick)
   108 {
   109     SDL_Window *window = NULL;
   110     SDL_Renderer *screen = NULL;
   111     SDL_Texture *target, *background, *button, *axis, *marker;
   112     const char *name = NULL;
   113     SDL_bool retval = SDL_FALSE;
   114     SDL_bool done = SDL_FALSE, next=SDL_FALSE;
   115     SDL_Event event;
   116     SDL_Rect dst;
   117     int s, _s;
   118     Uint8 alpha=200, alpha_step = -1;
   119     Uint32 alpha_ticks;
   120     char mapping[4096], temp[4096];
   121     MappingStep *step;
   122     MappingStep steps[] = {
   123         {342, 132,  0.0,  MARKER_BUTTON, "x", -1, -1, -1, -1, ""},
   124         {387, 167,  0.0,  MARKER_BUTTON, "a", -1, -1, -1, -1, ""},
   125         {431, 132,  0.0,  MARKER_BUTTON, "b", -1, -1, -1, -1, ""},
   126         {389, 101,  0.0,  MARKER_BUTTON, "y", -1, -1, -1, -1, ""},
   127         {174, 132,  0.0,  MARKER_BUTTON, "back", -1, -1, -1, -1, ""},
   128         {233, 132,  0.0,  MARKER_BUTTON, "guide", -1, -1, -1, -1, ""},
   129         {289, 132,  0.0,  MARKER_BUTTON, "start", -1, -1, -1, -1, ""},        
   130         {116, 217,  0.0,  MARKER_BUTTON, "dpleft", -1, -1, -1, -1, ""},
   131         {154, 249,  0.0,  MARKER_BUTTON, "dpdown", -1, -1, -1, -1, ""},
   132         {186, 217,  0.0,  MARKER_BUTTON, "dpright", -1, -1, -1, -1, ""},
   133         {154, 188,  0.0,  MARKER_BUTTON, "dpup", -1, -1, -1, -1, ""},
   134         {77,  40,   0.0,  MARKER_BUTTON, "leftshoulder", -1, -1, -1, -1, ""},
   135         {91, 0,    0.0,  MARKER_BUTTON, "lefttrigger", -1, -1, -1, -1, ""},
   136         {396, 36,   0.0,  MARKER_BUTTON, "rightshoulder", -1, -1, -1, -1, ""},
   137         {375, 0,    0.0,  MARKER_BUTTON, "righttrigger", -1, -1, -1, -1, ""},
   138         {75,  154,  0.0,  MARKER_BUTTON, "leftstick", -1, -1, -1, -1, ""},
   139         {305, 230,  0.0,  MARKER_BUTTON, "rightstick", -1, -1, -1, -1, ""},
   140         {75,  154,  0.0,  MARKER_AXIS,   "leftx", -1, -1, -1, -1, ""},
   141         {75,  154,  90.0, MARKER_AXIS,   "lefty", -1, -1, -1, -1, ""},        
   142         {305, 230,  0.0,  MARKER_AXIS,   "rightx", -1, -1, -1, -1, ""},
   143         {305, 230,  90.0, MARKER_AXIS,   "righty", -1, -1, -1, -1, ""},
   144     };
   145 
   146     /* Create a window to display joystick axis position */
   147     window = SDL_CreateWindow("Game Controller Map", SDL_WINDOWPOS_CENTERED,
   148                               SDL_WINDOWPOS_CENTERED, SCREEN_WIDTH,
   149                               SCREEN_HEIGHT, 0);
   150     if (window == NULL) {
   151         SDL_LogError(SDL_LOG_CATEGORY_APPLICATION, "Couldn't create window: %s\n", SDL_GetError());
   152         return SDL_FALSE;
   153     }
   154 
   155     screen = SDL_CreateRenderer(window, -1, 0);
   156     if (screen == NULL) {
   157         SDL_LogError(SDL_LOG_CATEGORY_APPLICATION, "Couldn't create renderer: %s\n", SDL_GetError());
   158         SDL_DestroyWindow(window);
   159         return SDL_FALSE;
   160     }
   161     
   162     target = SDL_CreateTexture(screen, SDL_PIXELFORMAT_RGB888, SDL_TEXTUREACCESS_TARGET, MAP_WIDTH, MAP_HEIGHT);
   163     background = LoadTexture(screen, "controllermap.bmp", SDL_FALSE);
   164     button = LoadTexture(screen, "button.bmp", SDL_TRUE);
   165     axis = LoadTexture(screen, "axis.bmp", SDL_TRUE);
   166     SDL_RaiseWindow(window);
   167 
   168     /* Print info about the joystick we are watching */
   169     name = SDL_JoystickName(joystick);
   170     SDL_Log("Watching joystick %d: (%s)\n", SDL_JoystickInstanceID(joystick),
   171            name ? name : "Unknown Joystick");
   172     SDL_Log("Joystick has %d axes, %d hats, %d balls, and %d buttons\n",
   173            SDL_JoystickNumAxes(joystick), SDL_JoystickNumHats(joystick),
   174            SDL_JoystickNumBalls(joystick), SDL_JoystickNumButtons(joystick));
   175     
   176     SDL_Log("\n\n\
   177     ====================================================================================\n\
   178     Press the buttons on your controller when indicated\n\
   179     (Your controller may look different than the picture)\n\
   180     If you want to correct a mistake, press backspace or the back button on your device\n\
   181     To skip a button, press SPACE or click/touch the screen\n\
   182     To exit, press ESC\n\
   183     ====================================================================================\n");
   184     
   185     /* Initialize mapping with GUID and name */
   186     SDL_JoystickGetGUIDString(SDL_JoystickGetGUID(joystick), temp, SDL_arraysize(temp));
   187     SDL_snprintf(mapping, SDL_arraysize(mapping), "%s,%s,platform:%s,",
   188         temp, name ? name : "Unknown Joystick", SDL_GetPlatform());
   189 
   190     /* Loop, getting joystick events! */
   191     for(s=0; s<SDL_arraysize(steps) && !done;) {
   192         /* blank screen, set up for drawing this frame. */
   193         step = &steps[s];
   194         SDL_strlcpy(step->mapping, mapping, SDL_arraysize(step->mapping));
   195         step->axis = -1;
   196         step->button = -1;
   197         step->hat = -1;
   198         step->hat_value = -1;
   199         SDL_SetClipboardText("TESTING TESTING 123");
   200         
   201         switch(step->marker) {
   202             case MARKER_AXIS:
   203                 marker = axis;
   204                 break;
   205             case MARKER_BUTTON:
   206                 marker = button;
   207                 break;
   208             default:
   209                 break;
   210         }
   211         
   212         dst.x = step->x;
   213         dst.y = step->y;
   214         SDL_QueryTexture(marker, NULL, NULL, &dst.w, &dst.h);
   215         next=SDL_FALSE;
   216         
   217         while (!done && !next) {
   218             if (SDL_GetTicks() - alpha_ticks > 5) {
   219                 alpha_ticks = SDL_GetTicks();
   220                 alpha += alpha_step;
   221                 if (alpha == 255) {
   222                     alpha_step = -1;
   223                 }
   224                 if (alpha < 128) {
   225                     alpha_step = 1;
   226                 }
   227             }
   228             
   229             SDL_SetRenderTarget(screen, target);
   230             SDL_RenderCopy(screen, background, NULL, NULL);
   231             SDL_SetTextureAlphaMod(marker, alpha);
   232             SDL_SetTextureColorMod(marker, 10, 255, 21);
   233             SDL_RenderCopyEx(screen, marker, NULL, &dst, step->angle, NULL, 0);
   234             SDL_SetRenderTarget(screen, NULL);
   235             SDL_RenderCopy(screen, target, NULL, NULL);
   236             SDL_RenderPresent(screen);
   237             
   238             if (SDL_PollEvent(&event)) {
   239                 switch (event.type) {
   240                 case SDL_JOYAXISMOTION:
   241                     if (event.jaxis.value > 20000 || event.jaxis.value < -20000) {
   242                         for (_s = 0; _s < s; _s++) {
   243                             if (steps[_s].axis == event.jaxis.axis) {
   244                                 break;
   245                             }
   246                         }
   247                         if (_s == s) {
   248                             step->axis = event.jaxis.axis;
   249                             SDL_strlcat(mapping, step->field, SDL_arraysize(mapping));
   250                             SDL_snprintf(temp, SDL_arraysize(temp), ":a%u,", event.jaxis.axis);
   251                             SDL_strlcat(mapping, temp, SDL_arraysize(mapping));
   252                             s++;
   253                             next=SDL_TRUE;
   254                         }
   255                     }
   256                     
   257                     break;
   258                 case SDL_JOYHATMOTION:
   259                         for (_s = 0; _s < s; _s++) {
   260                             if (steps[_s].hat == event.jhat.hat && steps[_s].hat_value == event.jhat.value) {
   261                                 break;
   262                             }
   263                         }
   264                         if (_s == s) {
   265                             step->hat = event.jhat.hat;
   266                             step->hat_value = event.jhat.value;
   267                             SDL_strlcat(mapping, step->field, SDL_arraysize(mapping));
   268                             SDL_snprintf(temp, SDL_arraysize(temp), ":h%u.%u,", event.jhat.hat, event.jhat.value );
   269                             SDL_strlcat(mapping, temp, SDL_arraysize(mapping));
   270                             s++;
   271                             next=SDL_TRUE;
   272                         }
   273                     break;
   274                 case SDL_JOYBALLMOTION:
   275                     break;
   276                 case SDL_JOYBUTTONUP:
   277                     for (_s = 0; _s < s; _s++) {
   278                         if (steps[_s].button == event.jbutton.button) {
   279                             break;
   280                         }
   281                     }
   282                     if (_s == s) {
   283                         step->button = event.jbutton.button;
   284                         SDL_strlcat(mapping, step->field, SDL_arraysize(mapping));
   285                         SDL_snprintf(temp, SDL_arraysize(temp), ":b%u,", event.jbutton.button);
   286                         SDL_strlcat(mapping, temp, SDL_arraysize(mapping));
   287                         s++;
   288                         next=SDL_TRUE;
   289                     }
   290                     break;
   291                 case SDL_FINGERDOWN:
   292                 case SDL_MOUSEBUTTONDOWN:
   293                     /* Skip this step */
   294                     s++;
   295                     next=SDL_TRUE;
   296                     break;
   297                 case SDL_KEYDOWN:
   298                     if (event.key.keysym.sym == SDLK_BACKSPACE || event.key.keysym.sym == SDLK_AC_BACK) {
   299                         /* Undo! */
   300                         if (s > 0) {
   301                             SDL_strlcpy(mapping, step->mapping, SDL_arraysize(step->mapping));
   302                             s--;
   303                             next = SDL_TRUE;
   304                         }
   305                         break;
   306                     }
   307                     if (event.key.keysym.sym == SDLK_SPACE) {
   308                         /* Skip this step */
   309                         s++;
   310                         next=SDL_TRUE;
   311                         break;
   312                     }
   313                     
   314                     if ((event.key.keysym.sym != SDLK_ESCAPE)) {
   315                         break;
   316                     }
   317                     /* Fall through to signal quit */
   318                 case SDL_QUIT:
   319                     done = SDL_TRUE;
   320                     break;
   321                 default:
   322                     break;
   323                 }
   324             }
   325         }
   326 
   327     }
   328 
   329     if (s == SDL_arraysize(steps) ) {
   330         SDL_Log("Mapping:\n\n%s\n\n", mapping);
   331         /* Print to stdout as well so the user can cat the output somewhere */
   332         printf("%s\n", mapping);
   333     }
   334     
   335     while(SDL_PollEvent(&event)) {};
   336     
   337     SDL_DestroyRenderer(screen);
   338     SDL_DestroyWindow(window);
   339     return retval;
   340 }
   341 
   342 int
   343 main(int argc, char *argv[])
   344 {
   345     const char *name;
   346     int i;
   347     SDL_Joystick *joystick;
   348 
   349     /* Enable standard application logging */
   350     SDL_LogSetPriority(SDL_LOG_CATEGORY_APPLICATION, SDL_LOG_PRIORITY_INFO);	
   351 
   352     /* Initialize SDL (Note: video is required to start event loop) */
   353     if (SDL_Init(SDL_INIT_VIDEO | SDL_INIT_JOYSTICK) < 0) {
   354         SDL_LogError(SDL_LOG_CATEGORY_APPLICATION, "Couldn't initialize SDL: %s\n", SDL_GetError());
   355         exit(1);
   356     }
   357 
   358     /* Print information about the joysticks */
   359     SDL_Log("There are %d joysticks attached\n", SDL_NumJoysticks());
   360     for (i = 0; i < SDL_NumJoysticks(); ++i) {
   361         name = SDL_JoystickNameForIndex(i);
   362         SDL_Log("Joystick %d: %s\n", i, name ? name : "Unknown Joystick");
   363         joystick = SDL_JoystickOpen(i);
   364         if (joystick == NULL) {
   365             SDL_LogError(SDL_LOG_CATEGORY_APPLICATION, "SDL_JoystickOpen(%d) failed: %s\n", i,
   366                     SDL_GetError());
   367         } else {
   368             char guid[64];
   369             SDL_JoystickGetGUIDString(SDL_JoystickGetGUID(joystick),
   370                                       guid, sizeof (guid));
   371             SDL_Log("       axes: %d\n", SDL_JoystickNumAxes(joystick));
   372             SDL_Log("      balls: %d\n", SDL_JoystickNumBalls(joystick));
   373             SDL_Log("       hats: %d\n", SDL_JoystickNumHats(joystick));
   374             SDL_Log("    buttons: %d\n", SDL_JoystickNumButtons(joystick));
   375             SDL_Log("instance id: %d\n", SDL_JoystickInstanceID(joystick));
   376             SDL_Log("       guid: %s\n", guid);
   377             SDL_JoystickClose(joystick);
   378         }
   379     }
   380 
   381 #ifdef ANDROID
   382     if (SDL_NumJoysticks() > 0) {
   383 #else
   384     if (argv[1]) {
   385 #endif
   386         SDL_bool reportederror = SDL_FALSE;
   387         SDL_bool keepGoing = SDL_TRUE;
   388         SDL_Event event;
   389 #ifdef ANDROID
   390         joystick = SDL_JoystickOpen(0);
   391 #else
   392         joystick = SDL_JoystickOpen(atoi(argv[1]));
   393 #endif
   394         while ( keepGoing ) {
   395             if (joystick == NULL) {
   396                 if ( !reportederror ) {
   397                     SDL_Log("Couldn't open joystick %d: %s\n", atoi(argv[1]), SDL_GetError());
   398                     keepGoing = SDL_FALSE;
   399                     reportederror = SDL_TRUE;
   400                 }
   401             } else {
   402                 reportederror = SDL_FALSE;
   403                 keepGoing = WatchJoystick(joystick);
   404                 SDL_JoystickClose(joystick);
   405             }
   406 
   407             joystick = NULL;
   408             if (keepGoing) {
   409                 SDL_Log("Waiting for attach\n");
   410             }
   411             while (keepGoing) {
   412                 SDL_WaitEvent(&event);
   413                 if ((event.type == SDL_QUIT) || (event.type == SDL_FINGERDOWN)
   414                     || (event.type == SDL_MOUSEBUTTONDOWN)) {
   415                     keepGoing = SDL_FALSE;
   416                 } else if (event.type == SDL_JOYDEVICEADDED) {
   417                     joystick = SDL_JoystickOpen(atoi(argv[1]));
   418                     break;
   419                 }
   420             }
   421         }
   422     }
   423     else {
   424         SDL_Log("\n\nUsage: ./controllermap number\nFor example: ./controllermap 0\nOr: ./controllermap 0 >> gamecontrollerdb.txt");
   425     }
   426     SDL_QuitSubSystem(SDL_INIT_VIDEO | SDL_INIT_JOYSTICK);
   427 
   428     return 0;
   429 }
   430 
   431 #else
   432 
   433 int
   434 main(int argc, char *argv[])
   435 {
   436     SDL_LogError(SDL_LOG_CATEGORY_APPLICATION, "SDL compiled without Joystick support.\n");
   437     exit(1);
   438 }
   439 
   440 #endif