Shamusworld >> Repos - virtualjaguar/blob - src/joystick.cpp

   1 //
   2 // Joystick handler
   3 //
   4 // by cal2
   5 // GCC/SDL port by Niels Wagenaar (Linux/WIN32) and Caz (BeOS)
   6 // Cleanups/fixes by James L. Hammons
   7 //
   8
   9 #include <time.h>
  10 #include <SDL.h>
  11 #include "jaguar.h"
  12 #include "video.h"
  13 #include "settings.h"
  14
  15 #define BUTTON_U                0
  16 #define BUTTON_D                1
  17 #define BUTTON_L                2
  18 #define BUTTON_R                3
  19 #define BUTTON_s                4
  20 #define BUTTON_7                5
  21 #define BUTTON_4                6
  22 #define BUTTON_1                7
  23 #define BUTTON_0                8
  24 #define BUTTON_8                9
  25 #define BUTTON_5                10
  26 #define BUTTON_2                11
  27 #define BUTTON_d                12
  28 #define BUTTON_9                13
  29 #define BUTTON_6                14
  30 #define BUTTON_3                15
  31
  32 #define BUTTON_A                16
  33 #define BUTTON_B                17
  34 #define BUTTON_C                18
  35 #define BUTTON_OPTION   19
  36 #define BUTTON_PAUSE    20
  37
  38 // Global vars
  39
  40 static uint8 joystick_ram[4];
  41 static uint8 joypad_0_buttons[21];
  42 static uint8 joypad_1_buttons[21];
  43 extern bool finished;
  44 extern bool showGUI;
  45 bool GUIKeyHeld = false;
  46 extern int start_logging;
  47 int gpu_start_log = 0;
  48 int op_start_log = 0;
  49 int blit_start_log = 0;
  50 int effect_start = 0;
  51 int effect_start2 = 0, effect_start3 = 0, effect_start4 = 0, effect_start5 = 0, effect_start6 = 0;
  52 bool interactiveMode = false;
  53 bool iLeft, iRight, iToggle = false;
  54 bool keyHeld1 = false, keyHeld2 = false, keyHeld3 = false;
  55 int objectPtr = 0;
  56 bool startMemLog = false;
  57 extern bool doDSPDis;
  58
  59
  60 void joystick_init(void)
  61 {
  62         joystick_reset();
  63 }
  64
  65 void joystick_exec(void)
  66 {
  67 //      extern bool useJoystick;
  68         uint8 * keystate = SDL_GetKeyState(NULL);
  69
  70         memset(joypad_0_buttons, 0, 21);
  71         memset(joypad_1_buttons, 0, 21);
  72         gpu_start_log = 0;                                                      // Only log while key down!
  73         effect_start = 0;
  74         effect_start2 = effect_start3 = effect_start4 = effect_start5 = effect_start6 = 0;
  75         blit_start_log = 0;
  76         iLeft = iRight = false;
  77
  78         if ((keystate[SDLK_LALT] || keystate[SDLK_RALT]) & keystate[SDLK_RETURN])
  79                 ToggleFullscreen();
  80
  81         // Keybindings in order of U, D, L, R, C, B, A, Op, Pa, 0-9, #, *
  82 //      vjs.p1KeyBindings[0] = sdlemu_getval_int("p1k_up", SDLK_UP);
  83
  84         if (keystate[vjs.p1KeyBindings[0]])
  85                 joypad_0_buttons[BUTTON_U] = 0x01;
  86         if (keystate[vjs.p1KeyBindings[1]])
  87                 joypad_0_buttons[BUTTON_D] = 0x01;
  88         if (keystate[vjs.p1KeyBindings[2]])
  89                 joypad_0_buttons[BUTTON_L] = 0x01;
  90         if (keystate[vjs.p1KeyBindings[3]])
  91                 joypad_0_buttons[BUTTON_R] = 0x01;
  92         // The buttons are labelled C,B,A on the controller (going from left to right)
  93         if (keystate[vjs.p1KeyBindings[4]])
  94                 joypad_0_buttons[BUTTON_C] = 0x01;
  95         if (keystate[vjs.p1KeyBindings[5]])
  96                 joypad_0_buttons[BUTTON_B] = 0x01;
  97         if (keystate[vjs.p1KeyBindings[6]])
  98                 joypad_0_buttons[BUTTON_A] = 0x01;
  99 //I may yet move these to O and P...
 100         if (keystate[vjs.p1KeyBindings[7]])
 101                 joypad_0_buttons[BUTTON_OPTION] = 0x01;
 102         if (keystate[vjs.p1KeyBindings[8]])
 103                 joypad_0_buttons[BUTTON_PAUSE] = 0x01;
 104
 105         if (keystate[vjs.p1KeyBindings[9]])
 106                 joypad_0_buttons[BUTTON_0] = 0x01;
 107         if (keystate[vjs.p1KeyBindings[10]])
 108                 joypad_0_buttons[BUTTON_1] = 0x01;
 109         if (keystate[vjs.p1KeyBindings[11]])
 110                 joypad_0_buttons[BUTTON_2] = 0x01;
 111         if (keystate[vjs.p1KeyBindings[12]])
 112                 joypad_0_buttons[BUTTON_3] = 0x01;
 113         if (keystate[vjs.p1KeyBindings[13]])
 114                 joypad_0_buttons[BUTTON_4] = 0x01;
 115         if (keystate[vjs.p1KeyBindings[14]])
 116                 joypad_0_buttons[BUTTON_5] = 0x01;
 117         if (keystate[vjs.p1KeyBindings[15]])
 118                 joypad_0_buttons[BUTTON_6] = 0x01;
 119         if (keystate[vjs.p1KeyBindings[16]])
 120                 joypad_0_buttons[BUTTON_7] = 0x01;
 121         if (keystate[vjs.p1KeyBindings[17]])
 122                 joypad_0_buttons[BUTTON_8] = 0x01;
 123         if (keystate[vjs.p1KeyBindings[18]])
 124                 joypad_0_buttons[BUTTON_9] = 0x01;
 125         if (keystate[vjs.p1KeyBindings[19]])
 126                 joypad_0_buttons[BUTTON_s] = 0x01;
 127         if (keystate[vjs.p1KeyBindings[20]])
 128                 joypad_0_buttons[BUTTON_d] = 0x01;
 129
 130     if (keystate[SDLK_ESCAPE])
 131         finished = true;
 132
 133         if (keystate[SDLK_TAB])
 134         {
 135                 if (!GUIKeyHeld)
 136                         showGUI = !showGUI, GUIKeyHeld = true;
 137         }
 138         else
 139                 GUIKeyHeld = false;
 140
 141         if (keystate[SDLK_q])
 142                 start_logging = 1;
 143         if (keystate[SDLK_w])
 144                 gpu_reset_stats();
 145 //      if (keystate[SDLK_u])           jaguar_long_write(0xf1c384,jaguar_long_read(0xf1c384)+1);
 146         if (keystate[SDLK_d])
 147                 DumpMainMemory();
 148         if (keystate[SDLK_l])
 149                 gpu_start_log = 1;
 150         if (keystate[SDLK_o])
 151                 op_start_log = 1;
 152         if (keystate[SDLK_b])
 153                 blit_start_log = 1;
 154
 155         if (keystate[SDLK_1])
 156                 effect_start = 1;
 157         if (keystate[SDLK_2])
 158                 effect_start2 = 1;
 159         if (keystate[SDLK_3])
 160                 effect_start3 = 1;
 161         if (keystate[SDLK_4])
 162                 effect_start4 = 1;
 163         if (keystate[SDLK_5])
 164                 effect_start5 = 1;
 165         if (keystate[SDLK_6])
 166                 effect_start6 = 1;
 167
 168         if (keystate[SDLK_i])
 169                 interactiveMode = true;
 170
 171         if (keystate[SDLK_8] && interactiveMode)
 172         {
 173                 if (!keyHeld1)
 174                         objectPtr--, keyHeld1 = true;
 175         }
 176         else
 177                 keyHeld1 = false;
 178
 179         if (keystate[SDLK_0] && interactiveMode)
 180         {
 181                 if (!keyHeld2)
 182                         objectPtr++, keyHeld2 = true;
 183         }
 184         else
 185                 keyHeld2 = false;
 186
 187         if (keystate[SDLK_9] && interactiveMode)
 188         {
 189                 if (!keyHeld3)
 190                         iToggle = !iToggle, keyHeld3 = true;
 191         }
 192         else
 193                 keyHeld3 = false;
 194
 195         if (keystate[SDLK_e])
 196                 startMemLog = true;
 197         if (keystate[SDLK_r])
 198                 WriteLog("\n--------> MARK!\n\n");
 199         if (keystate[SDLK_t])
 200                 doDSPDis = true;
 201
 202
 203         // Joystick support [nwagenaar]
 204
 205     if (vjs.useJoystick)
 206     {
 207                 extern SDL_Joystick * joystick;
 208                 int16 x = SDL_JoystickGetAxis(joystick, 0),
 209                         y = SDL_JoystickGetAxis(joystick, 1);
 210
 211                 if (x > 16384)
 212                         joypad_0_buttons[BUTTON_R] = 0x01;
 213                 if (x < -16384)
 214                         joypad_0_buttons[BUTTON_L] = 0x01;
 215                 if (y > 16384)
 216                         joypad_0_buttons[BUTTON_D] = 0x01;
 217                 if (y < -16384)
 218                         joypad_0_buttons[BUTTON_U] = 0x01;
 219
 220                 if (SDL_JoystickGetButton(joystick, 0) == SDL_PRESSED)
 221                         joypad_0_buttons[BUTTON_A] = 0x01;
 222                 if (SDL_JoystickGetButton(joystick, 1) == SDL_PRESSED)
 223                         joypad_0_buttons[BUTTON_B] = 0x01;
 224                 if (SDL_JoystickGetButton(joystick, 2) == SDL_PRESSED)
 225                         joypad_0_buttons[BUTTON_C] = 0x01;
 226         }
 227
 228         // Needed to ensure that the events queue is empty [nwagenaar]
 229     SDL_PumpEvents();
 230 }
 231
 232 void joystick_reset(void)
 233 {
 234         memset(joystick_ram, 0x00, 4);
 235         memset(joypad_0_buttons, 0, 21);
 236         memset(joypad_1_buttons, 0, 21);
 237 }
 238
 239 void joystick_done(void)
 240 {
 241 }
 242
 243 uint8 joystick_byte_read(uint32 offset)
 244 {
 245 //      extern bool hardwareTypeNTSC;
 246         offset &= 0x03;
 247
 248         if (offset == 0)
 249         {
 250                 uint8 data = 0x00;
 251                 int pad0Index = joystick_ram[1] & 0x0F;
 252                 int pad1Index = (joystick_ram[1] >> 4) & 0x0F;
 253
 254 // This is bad--we're assuming that a bit is set in the last case. Might not be so!
 255                 if (!(pad0Index & 0x01))
 256                         pad0Index = 0;
 257                 else if (!(pad0Index & 0x02))
 258                         pad0Index = 1;
 259                 else if (!(pad0Index & 0x04))
 260                         pad0Index = 2;
 261                 else
 262                         pad0Index = 3;
 263
 264                 if (!(pad1Index & 0x01))
 265                         pad1Index = 0;
 266                 else if (!(pad1Index & 0x02))
 267                         pad1Index = 1;
 268                 else if (!(pad1Index & 0x04))
 269                         pad1Index = 2;
 270                 else
 271                         pad1Index = 3;
 272
 273                 if (joypad_0_buttons[(pad0Index << 2) + 0])     data |= 0x01;
 274                 if (joypad_0_buttons[(pad0Index << 2) + 1]) data |= 0x02;
 275                 if (joypad_0_buttons[(pad0Index << 2) + 2]) data |= 0x04;
 276                 if (joypad_0_buttons[(pad0Index << 2) + 3]) data |= 0x08;
 277                 if (joypad_1_buttons[(pad1Index << 2) + 0]) data |= 0x10;
 278                 if (joypad_1_buttons[(pad1Index << 2) + 1]) data |= 0x20;
 279                 if (joypad_1_buttons[(pad1Index << 2) + 2]) data |= 0x40;
 280                 if (joypad_1_buttons[(pad1Index << 2) + 3]) data |= 0x80;
 281
 282                 return ~data;
 283         }
 284         else if (offset == 3)
 285         {
 286                 uint8 data = 0x2F | (vjs.hardwareTypeNTSC ? 0x10 : 0x00);
 287                 int pad0Index = joystick_ram[1] & 0x0F;
 288 //unused                int pad1Index = (joystick_ram[1] >> 4) & 0x0F;
 289
 290                 if (!(pad0Index & 0x01))
 291                 {
 292                         if (joypad_0_buttons[BUTTON_PAUSE])
 293                                 data ^= 0x01;
 294                         if (joypad_0_buttons[BUTTON_A])
 295                                 data ^= 0x02;
 296                 }
 297                 else if (!(pad0Index & 0x02))
 298                 {
 299                         if (joypad_0_buttons[BUTTON_B])
 300                                 data ^= 0x02;
 301                 }
 302                 else if (!(pad0Index & 0x04))
 303                 {
 304                         if (joypad_0_buttons[BUTTON_C])
 305                                 data ^= 0x02;
 306                 }
 307                 else
 308                 {
 309                         if (joypad_0_buttons[BUTTON_OPTION])
 310                                 data ^= 0x02;
 311                 }
 312                 return data;
 313         }
 314
 315         return joystick_ram[offset];
 316 }
 317
 318 uint16 joystick_word_read(uint32 offset)
 319 {
 320         return ((uint16)joystick_byte_read((offset+0)&0x03) << 8) | joystick_byte_read((offset+1)&0x03);
 321 }
 322
 323 void joystick_byte_write(uint32 offset, uint8 data)
 324 {
 325         joystick_ram[offset&0x03] = data;
 326 }
 327
 328 void joystick_word_write(uint32 offset, uint16 data)
 329 {
 330         offset &= 0x03;
 331         joystick_ram[offset+0] = (data >> 8) & 0xFF;
 332         joystick_ram[offset+1] = data & 0xFF;
 333 }