src_platform/sdl/bz/input/input.c

   1 #include <bz/input/input_internal.h>
   2 #include <bz/input/platform.h>
   3
   4 #include <bz/input/input_id_internal.h>
   5 #include <SDL.h>
   6
   7 typedef enum BZInputCode {
   8         BZInputCodeQuit = 1,
   9 } BZInputCode;
  10 const BZInputCode BZInputCodeMax = BZInputCodeQuit;
  11
  12 typedef union BZInputTableEntry {
  13         bool booleanValue;
  14         int integerValue;
  15         float floatValue;
  16 } BZInputTableEntry;
  17
  18 static BZInput bzQuitInput = { .id = BZInputCodeQuit, };
  19 BZInputID bzQuitInputID = &bzQuitInput;
  20
  21 const size_t inputTableSize = BZInputCodeMax + 1;
  22 static BZInputTableEntry inputTable[inputTableSize];
  23
  24 typedef struct {
  25         bool down;
  26         bool pressed;
  27 } Button;
  28
  29 #define kButtonCount 12
  30
  31 static Button buttons[kButtonCount];
  32
  33 static SDL_Joystick *joy;
  34
  35 int buttonIdx(SDL_KeyCode keyCode) {
  36         switch (keyCode) {
  37                 case SDLK_UP:
  38                         return 1;
  39
  40                 case SDLK_DOWN:
  41                         return 2;
  42
  43                 case SDLK_LEFT:
  44                         return 3;
  45
  46                 case SDLK_RIGHT:
  47                         return 4;
  48
  49                 case 'z':
  50                         return 5;
  51
  52                 case 'x':
  53                         return 6;
  54
  55                 case 'w':
  56                         return 7;
  57
  58                 case 's':
  59                         return 8;
  60
  61                 case 'a':
  62                         return 9;
  63
  64                 case 'd':
  65                         return 10;
  66
  67                 default:
  68                         return 0;
  69         }
  70 }
  71
  72 void bzInputInit() {
  73         for (size_t i = 0; i < kButtonCount; ++i) {
  74                 buttons[i].down = false;
  75         }
  76
  77         for (size_t i = 0, c = SDL_NumJoysticks(); i < c; ++i) {
  78                 bzLog("Joystick: %s", SDL_JoystickName(i));
  79
  80         }
  81
  82         if (SDL_NumJoysticks() > 0) {
  83                 joy = SDL_JoystickOpen(0);
  84         }
  85 }
  86
  87 void bzInputTeardown() {
  88
  89 }
  90
  91 void bzInputProcessFrame() {
  92         for (size_t i = 0; i < inputTableSize; ++i) {
  93                 inputTable[i].integerValue = 0; // FIXME, max size and whatever.
  94         }
  95
  96         for (size_t i = 0; i < kButtonCount; ++i) {
  97                 buttons[i].down = buttons[i].down || buttons[i].pressed;
  98                 buttons[i].pressed = false;
  99         }
 100
 101         SDL_Event event;
 102         while (SDL_PollEvent(&event)) {
 103                 switch (event.type) {
 104                         case SDL_QUIT:
 105                                 inputTable[BZInputCodeQuit].booleanValue = true;
 106                                 break;
 107
 108                         case SDL_KEYDOWN:
 109                                 buttons[buttonIdx(event.key.keysym.sym)].pressed = true;
 110                                 break;
 111
 112                         case SDL_KEYUP:
 113                                 buttons[buttonIdx(event.key.keysym.sym)].pressed = false;
 114                                 buttons[buttonIdx(event.key.keysym.sym)].down = false;
 115                                 break;
 116                 }
 117         }
 118 }
 119
 120 bool bzInputGetBooleanValue(BZInputID inputID) {
 121         return inputTable[inputID->id].booleanValue;
 122 }
 123
 124 int bzInputGetIntegerValue(BZInputID inputID) {
 125         return inputTable[inputID->id].integerValue;
 126 }
 127
 128 float bzInputGetFloatValue(BZInputID inputID) {
 129         return inputTable[inputID->id].floatValue;
 130 }
 131
 132 bool bzInputBtn(int id) {
 133         return buttons[id].down || buttons[id].pressed;
 134 }
 135
 136 bool bzInputBtnP(int id) {
 137         return buttons[id].pressed;
 138 }
 139