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 // (C) 2010 Underground Software
   8 //
   9 // JLH = James L. Hammons <jlhamm@acm.org>
  10 //
  11 // Who  When        What
  12 // ---  ----------  -------------------------------------------------------------
  13 // JLH  01/16/2010  Created this log ;-)
  14 //
  15
  16 #include "joystick.h"
  17
  18 #include <SDL.h>
  19 #include <time.h>
  20 #include "gpu.h"
  21 //#include "gui.h"
  22 #include "jaguar.h"
  23 #include "log.h"
  24 #include "settings.h"
  25 #include "video.h"
  26
  27 #define BUTTON_U                0
  28 #define BUTTON_D                1
  29 #define BUTTON_L                2
  30 #define BUTTON_R                3
  31 #define BUTTON_s                4
  32 #define BUTTON_7                5
  33 #define BUTTON_4                6
  34 #define BUTTON_1                7
  35 #define BUTTON_0                8
  36 #define BUTTON_8                9
  37 #define BUTTON_5                10
  38 #define BUTTON_2                11
  39 #define BUTTON_d                12
  40 #define BUTTON_9                13
  41 #define BUTTON_6                14
  42 #define BUTTON_3                15
  43
  44 #define BUTTON_A                16
  45 #define BUTTON_B                17
  46 #define BUTTON_C                18
  47 #define BUTTON_OPTION   19
  48 #define BUTTON_PAUSE    20
  49
  50 // Global vars
  51
  52 static uint8 joystick_ram[4];
  53 static uint8 joypad_0_buttons[21];
  54 static uint8 joypad_1_buttons[21];
  55 //extern bool finished;
  56 ////extern bool showGUI;
  57 bool GUIKeyHeld = false;
  58 extern int start_logging;
  59 int gpu_start_log = 0;
  60 int op_start_log = 0;
  61 int blit_start_log = 0;
  62 int effect_start = 0;
  63 int effect_start2 = 0, effect_start3 = 0, effect_start4 = 0, effect_start5 = 0, effect_start6 = 0;
  64 bool interactiveMode = false;
  65 bool iLeft, iRight, iToggle = false;
  66 bool keyHeld1 = false, keyHeld2 = false, keyHeld3 = false;
  67 int objectPtr = 0;
  68 bool startMemLog = false;
  69 extern bool doDSPDis, doGPUDis;
  70
  71 bool blitterSingleStep = false;
  72 bool bssGo = false;
  73 bool bssHeld = false;
  74
  75 void JoystickInit(void)
  76 {
  77         JoystickReset();
  78 }
  79
  80 void JoystickExec(void)
  81 {
  82         uint8 * keystate = SDL_GetKeyState(NULL);
  83
  84         memset(joypad_0_buttons, 0, 21);
  85         memset(joypad_1_buttons, 0, 21);
  86         gpu_start_log = 0;                                                      // Only log while key down!
  87         effect_start = 0;
  88         effect_start2 = effect_start3 = effect_start4 = effect_start5 = effect_start6 = 0;
  89         blit_start_log = 0;
  90         iLeft = iRight = false;
  91
  92         if ((keystate[SDLK_LALT] || keystate[SDLK_RALT]) & keystate[SDLK_RETURN])
  93                 ToggleFullscreen();
  94
  95         // Keybindings in order of U, D, L, R, C, B, A, Op, Pa, 0-9, #, *
  96 //      vjs.p1KeyBindings[0] = sdlemu_getval_int("p1k_up", SDLK_UP);
  97
  98         if (keystate[vjs.p1KeyBindings[0]])
  99                 joypad_0_buttons[BUTTON_U] = 0x01;
 100         if (keystate[vjs.p1KeyBindings[1]])
 101                 joypad_0_buttons[BUTTON_D] = 0x01;
 102         if (keystate[vjs.p1KeyBindings[2]])
 103                 joypad_0_buttons[BUTTON_L] = 0x01;
 104         if (keystate[vjs.p1KeyBindings[3]])
 105                 joypad_0_buttons[BUTTON_R] = 0x01;
 106         // The buttons are labelled C,B,A on the controller (going from left to right)
 107         if (keystate[vjs.p1KeyBindings[4]])
 108                 joypad_0_buttons[BUTTON_C] = 0x01;
 109         if (keystate[vjs.p1KeyBindings[5]])
 110                 joypad_0_buttons[BUTTON_B] = 0x01;
 111         if (keystate[vjs.p1KeyBindings[6]])
 112                 joypad_0_buttons[BUTTON_A] = 0x01;
 113 //I may yet move these to O and P...
 114         if (keystate[vjs.p1KeyBindings[7]])
 115                 joypad_0_buttons[BUTTON_OPTION] = 0x01;
 116         if (keystate[vjs.p1KeyBindings[8]])
 117                 joypad_0_buttons[BUTTON_PAUSE] = 0x01;
 118
 119         if (keystate[vjs.p1KeyBindings[9]])
 120                 joypad_0_buttons[BUTTON_0] = 0x01;
 121         if (keystate[vjs.p1KeyBindings[10]])
 122                 joypad_0_buttons[BUTTON_1] = 0x01;
 123         if (keystate[vjs.p1KeyBindings[11]])
 124                 joypad_0_buttons[BUTTON_2] = 0x01;
 125         if (keystate[vjs.p1KeyBindings[12]])
 126                 joypad_0_buttons[BUTTON_3] = 0x01;
 127         if (keystate[vjs.p1KeyBindings[13]])
 128                 joypad_0_buttons[BUTTON_4] = 0x01;
 129         if (keystate[vjs.p1KeyBindings[14]])
 130                 joypad_0_buttons[BUTTON_5] = 0x01;
 131         if (keystate[vjs.p1KeyBindings[15]])
 132                 joypad_0_buttons[BUTTON_6] = 0x01;
 133         if (keystate[vjs.p1KeyBindings[16]])
 134                 joypad_0_buttons[BUTTON_7] = 0x01;
 135         if (keystate[vjs.p1KeyBindings[17]])
 136                 joypad_0_buttons[BUTTON_8] = 0x01;
 137         if (keystate[vjs.p1KeyBindings[18]])
 138                 joypad_0_buttons[BUTTON_9] = 0x01;
 139         if (keystate[vjs.p1KeyBindings[19]])
 140                 joypad_0_buttons[BUTTON_s] = 0x01;
 141         if (keystate[vjs.p1KeyBindings[20]])
 142                 joypad_0_buttons[BUTTON_d] = 0x01;
 143
 144 #warning "!!! FIX !!! (debounceRunKey)"
 145 //      extern bool debounceRunKey;
 146         bool debounceRunKey;
 147     if (keystate[SDLK_ESCAPE])
 148     {
 149                 if (!debounceRunKey)
 150 #warning "!!! FIX !!! (finished = true)"
 151 ;//             finished = true;
 152     }
 153     else
 154                 debounceRunKey = false;
 155
 156         if (keystate[SDLK_TAB])
 157         {
 158                 if (!GUIKeyHeld)
 159 #warning "!!! FIX !!! (showGUI = !showGUI, ...)"
 160 ;//                     showGUI = !showGUI, GUIKeyHeld = true;
 161         }
 162         else
 163                 GUIKeyHeld = false;
 164
 165         if (keystate[SDLK_q])
 166                 start_logging = 1;
 167         if (keystate[SDLK_w])
 168                 GPUResetStats();
 169 //      if (keystate[SDLK_u])           jaguar_long_write(0xf1c384,jaguar_long_read(0xf1c384)+1);
 170         if (keystate[SDLK_d])
 171                 DumpMainMemory();
 172         if (keystate[SDLK_l])
 173                 gpu_start_log = 1;
 174         if (keystate[SDLK_o])
 175                 op_start_log = 1;
 176         if (keystate[SDLK_b])
 177                 blit_start_log = 1;
 178
 179         if (keystate[SDLK_1])
 180                 effect_start = 1;
 181         if (keystate[SDLK_2])
 182                 effect_start2 = 1;
 183         if (keystate[SDLK_3])
 184                 effect_start3 = 1;
 185         if (keystate[SDLK_4])
 186                 effect_start4 = 1;
 187         if (keystate[SDLK_5])
 188                 effect_start5 = 1;
 189         if (keystate[SDLK_6])
 190                 effect_start6 = 1;
 191
 192         if (keystate[SDLK_i])
 193                 interactiveMode = true;
 194
 195         if (keystate[SDLK_8] && interactiveMode)
 196         {
 197                 if (!keyHeld1)
 198                         objectPtr--, keyHeld1 = true;
 199         }
 200         else
 201                 keyHeld1 = false;
 202
 203         if (keystate[SDLK_0] && interactiveMode)
 204         {
 205                 if (!keyHeld2)
 206                         objectPtr++, keyHeld2 = true;
 207         }
 208         else
 209                 keyHeld2 = false;
 210
 211         if (keystate[SDLK_9] && interactiveMode)
 212         {
 213                 if (!keyHeld3)
 214                         iToggle = !iToggle, keyHeld3 = true;
 215         }
 216         else
 217                 keyHeld3 = false;
 218
 219         if (keystate[SDLK_e])
 220                 startMemLog = true;
 221         if (keystate[SDLK_r])
 222                 WriteLog("\n--------> MARK!\n\n");
 223         if (keystate[SDLK_t])
 224                 doDSPDis = true;
 225         if (keystate[SDLK_y])
 226                 doGPUDis = true;
 227
 228         // BLITTER single step
 229         if (keystate[SDLK_F5])
 230                 blitterSingleStep = true;
 231
 232         if (keystate[SDLK_F6])
 233         {
 234                 if (!bssHeld)
 235                 {
 236                         bssHeld = true;
 237                         bssGo = true;
 238                 }
 239         }
 240         else
 241                 bssHeld = false;
 242
 243         // Joystick support [nwagenaar]
 244
 245     if (vjs.useJoystick)
 246     {
 247                 extern SDL_Joystick * joystick1;
 248                 int16 x = SDL_JoystickGetAxis(joystick1, 0),
 249                         y = SDL_JoystickGetAxis(joystick1, 1);
 250
 251                 if (x > 16384)
 252                         joypad_0_buttons[BUTTON_R] = 0x01;
 253                 if (x < -16384)
 254                         joypad_0_buttons[BUTTON_L] = 0x01;
 255                 if (y > 16384)
 256                         joypad_0_buttons[BUTTON_D] = 0x01;
 257                 if (y < -16384)
 258                         joypad_0_buttons[BUTTON_U] = 0x01;
 259
 260                 if (SDL_JoystickGetButton(joystick1, 0) == SDL_PRESSED)
 261                         joypad_0_buttons[BUTTON_A] = 0x01;
 262                 if (SDL_JoystickGetButton(joystick1, 1) == SDL_PRESSED)
 263                         joypad_0_buttons[BUTTON_B] = 0x01;
 264                 if (SDL_JoystickGetButton(joystick1, 2) == SDL_PRESSED)
 265                         joypad_0_buttons[BUTTON_C] = 0x01;
 266         }
 267
 268         // Needed to ensure that the events queue is empty [nwagenaar]
 269     SDL_PumpEvents();
 270 }
 271
 272 void JoystickReset(void)
 273 {
 274         memset(joystick_ram, 0x00, 4);
 275         memset(joypad_0_buttons, 0, 21);
 276         memset(joypad_1_buttons, 0, 21);
 277 }
 278
 279 void JoystickDone(void)
 280 {
 281 }
 282
 283 uint8 JoystickReadByte(uint32 offset)
 284 {
 285 #warning "No bounds checking done in JoystickReadByte!"
 286 //      extern bool hardwareTypeNTSC;
 287         offset &= 0x03;
 288
 289         if (offset == 0)
 290         {
 291                 uint8 data = 0x00;
 292                 int pad0Index = joystick_ram[1] & 0x0F;
 293                 int pad1Index = (joystick_ram[1] >> 4) & 0x0F;
 294
 295 // This is bad--we're assuming that a bit is set in the last case. Might not be so!
 296 // NOTE: values $7, B, D, & E are only legal ones for pad 0, (rows 3 to 0, in both cases)
 297 //              $E, D, B, & 7 are only legal ones for pad 1
 298 //       So the following code is WRONG!
 299
 300                 if (!(pad0Index & 0x01))
 301                         pad0Index = 0;
 302                 else if (!(pad0Index & 0x02))
 303                         pad0Index = 1;
 304                 else if (!(pad0Index & 0x04))
 305                         pad0Index = 2;
 306                 else
 307                         pad0Index = 3;
 308
 309                 if (!(pad1Index & 0x01))
 310                         pad1Index = 0;
 311                 else if (!(pad1Index & 0x02))
 312                         pad1Index = 1;
 313                 else if (!(pad1Index & 0x04))
 314                         pad1Index = 2;
 315                 else
 316                         pad1Index = 3;
 317
 318                 if (joypad_0_buttons[(pad0Index << 2) + 0])     data |= 0x01;
 319                 if (joypad_0_buttons[(pad0Index << 2) + 1]) data |= 0x02;
 320                 if (joypad_0_buttons[(pad0Index << 2) + 2]) data |= 0x04;
 321                 if (joypad_0_buttons[(pad0Index << 2) + 3]) data |= 0x08;
 322                 if (joypad_1_buttons[(pad1Index << 2) + 0]) data |= 0x10;
 323                 if (joypad_1_buttons[(pad1Index << 2) + 1]) data |= 0x20;
 324                 if (joypad_1_buttons[(pad1Index << 2) + 2]) data |= 0x40;
 325                 if (joypad_1_buttons[(pad1Index << 2) + 3]) data |= 0x80;
 326
 327                 return ~data;
 328         }
 329         else if (offset == 3)
 330         {
 331                 // Hardware ID returns NTSC/PAL identification bit here
 332                 uint8 data = 0x2F | (vjs.hardwareTypeNTSC ? 0x10 : 0x00);
 333                 int pad0Index = joystick_ram[1] & 0x0F;
 334 //unused                int pad1Index = (joystick_ram[1] >> 4) & 0x0F;
 335
 336 //WTF is this shit?
 337                 if (!(pad0Index & 0x01))
 338                 {
 339                         if (joypad_0_buttons[BUTTON_PAUSE])
 340                                 data ^= 0x01;
 341                         if (joypad_0_buttons[BUTTON_A])
 342                                 data ^= 0x02;
 343                 }
 344                 else if (!(pad0Index & 0x02))
 345                 {
 346                         if (joypad_0_buttons[BUTTON_B])
 347                                 data ^= 0x02;
 348                 }
 349                 else if (!(pad0Index & 0x04))
 350                 {
 351                         if (joypad_0_buttons[BUTTON_C])
 352                                 data ^= 0x02;
 353                 }
 354                 else
 355                 {
 356                         if (joypad_0_buttons[BUTTON_OPTION])
 357                                 data ^= 0x02;
 358                 }
 359
 360                 return data;
 361         }
 362
 363         return joystick_ram[offset];
 364 }
 365
 366 uint16 JoystickReadWord(uint32 offset)
 367 {
 368         return ((uint16)JoystickReadByte((offset + 0) & 0x03) << 8) | JoystickReadByte((offset + 1) & 0x03);
 369 }
 370
 371 void JoystickWriteByte(uint32 offset, uint8 data)
 372 {
 373         joystick_ram[offset & 0x03] = data;
 374 }
 375
 376 void JoystickWriteWord(uint32 offset, uint16 data)
 377 {
 378 #warning "No bounds checking done for JoystickWriteWord!"
 379         offset &= 0x03;
 380         joystick_ram[offset + 0] = (data >> 8) & 0xFF;
 381         joystick_ram[offset + 1] = data & 0xFF;
 382 }