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         extern bool debounceRunKey;
 131     if (keystate[SDLK_ESCAPE])
 132     {
 133                 if (!debounceRunKey)
 134                 finished = true;
 135     }
 136     else
 137                 debounceRunKey = false;
 138
 139         if (keystate[SDLK_TAB])
 140         {
 141                 if (!GUIKeyHeld)
 142                         showGUI = !showGUI, GUIKeyHeld = true;
 143         }
 144         else
 145                 GUIKeyHeld = false;
 146
 147         if (keystate[SDLK_q])
 148                 start_logging = 1;
 149         if (keystate[SDLK_w])
 150                 gpu_reset_stats();
 151 //      if (keystate[SDLK_u])           jaguar_long_write(0xf1c384,jaguar_long_read(0xf1c384)+1);
 152         if (keystate[SDLK_d])
 153                 DumpMainMemory();
 154         if (keystate[SDLK_l])
 155                 gpu_start_log = 1;
 156         if (keystate[SDLK_o])
 157                 op_start_log = 1;
 158         if (keystate[SDLK_b])
 159                 blit_start_log = 1;
 160
 161         if (keystate[SDLK_1])
 162                 effect_start = 1;
 163         if (keystate[SDLK_2])
 164                 effect_start2 = 1;
 165         if (keystate[SDLK_3])
 166                 effect_start3 = 1;
 167         if (keystate[SDLK_4])
 168                 effect_start4 = 1;
 169         if (keystate[SDLK_5])
 170                 effect_start5 = 1;
 171         if (keystate[SDLK_6])
 172                 effect_start6 = 1;
 173
 174         if (keystate[SDLK_i])
 175                 interactiveMode = true;
 176
 177         if (keystate[SDLK_8] && interactiveMode)
 178         {
 179                 if (!keyHeld1)
 180                         objectPtr--, keyHeld1 = true;
 181         }
 182         else
 183                 keyHeld1 = false;
 184
 185         if (keystate[SDLK_0] && interactiveMode)
 186         {
 187                 if (!keyHeld2)
 188                         objectPtr++, keyHeld2 = true;
 189         }
 190         else
 191                 keyHeld2 = false;
 192
 193         if (keystate[SDLK_9] && interactiveMode)
 194         {
 195                 if (!keyHeld3)
 196                         iToggle = !iToggle, keyHeld3 = true;
 197         }
 198         else
 199                 keyHeld3 = false;
 200
 201         if (keystate[SDLK_e])
 202                 startMemLog = true;
 203         if (keystate[SDLK_r])
 204                 WriteLog("\n--------> MARK!\n\n");
 205         if (keystate[SDLK_t])
 206                 doDSPDis = true;
 207
 208
 209         // Joystick support [nwagenaar]
 210
 211     if (vjs.useJoystick)
 212     {
 213                 extern SDL_Joystick * joystick;
 214                 int16 x = SDL_JoystickGetAxis(joystick, 0),
 215                         y = SDL_JoystickGetAxis(joystick, 1);
 216
 217                 if (x > 16384)
 218                         joypad_0_buttons[BUTTON_R] = 0x01;
 219                 if (x < -16384)
 220                         joypad_0_buttons[BUTTON_L] = 0x01;
 221                 if (y > 16384)
 222                         joypad_0_buttons[BUTTON_D] = 0x01;
 223                 if (y < -16384)
 224                         joypad_0_buttons[BUTTON_U] = 0x01;
 225
 226                 if (SDL_JoystickGetButton(joystick, 0) == SDL_PRESSED)
 227                         joypad_0_buttons[BUTTON_A] = 0x01;
 228                 if (SDL_JoystickGetButton(joystick, 1) == SDL_PRESSED)
 229                         joypad_0_buttons[BUTTON_B] = 0x01;
 230                 if (SDL_JoystickGetButton(joystick, 2) == SDL_PRESSED)
 231                         joypad_0_buttons[BUTTON_C] = 0x01;
 232         }
 233
 234         // Needed to ensure that the events queue is empty [nwagenaar]
 235     SDL_PumpEvents();
 236 }
 237
 238 void joystick_reset(void)
 239 {
 240         memset(joystick_ram, 0x00, 4);
 241         memset(joypad_0_buttons, 0, 21);
 242         memset(joypad_1_buttons, 0, 21);
 243 }
 244
 245 void joystick_done(void)
 246 {
 247 }
 248
 249 uint8 joystick_byte_read(uint32 offset)
 250 {
 251 //      extern bool hardwareTypeNTSC;
 252         offset &= 0x03;
 253
 254         if (offset == 0)
 255         {
 256                 uint8 data = 0x00;
 257                 int pad0Index = joystick_ram[1] & 0x0F;
 258                 int pad1Index = (joystick_ram[1] >> 4) & 0x0F;
 259
 260 // This is bad--we're assuming that a bit is set in the last case. Might not be so!
 261                 if (!(pad0Index & 0x01))
 262                         pad0Index = 0;
 263                 else if (!(pad0Index & 0x02))
 264                         pad0Index = 1;
 265                 else if (!(pad0Index & 0x04))
 266                         pad0Index = 2;
 267                 else
 268                         pad0Index = 3;
 269
 270                 if (!(pad1Index & 0x01))
 271                         pad1Index = 0;
 272                 else if (!(pad1Index & 0x02))
 273                         pad1Index = 1;
 274                 else if (!(pad1Index & 0x04))
 275                         pad1Index = 2;
 276                 else
 277                         pad1Index = 3;
 278
 279                 if (joypad_0_buttons[(pad0Index << 2) + 0])     data |= 0x01;
 280                 if (joypad_0_buttons[(pad0Index << 2) + 1]) data |= 0x02;
 281                 if (joypad_0_buttons[(pad0Index << 2) + 2]) data |= 0x04;
 282                 if (joypad_0_buttons[(pad0Index << 2) + 3]) data |= 0x08;
 283                 if (joypad_1_buttons[(pad1Index << 2) + 0]) data |= 0x10;
 284                 if (joypad_1_buttons[(pad1Index << 2) + 1]) data |= 0x20;
 285                 if (joypad_1_buttons[(pad1Index << 2) + 2]) data |= 0x40;
 286                 if (joypad_1_buttons[(pad1Index << 2) + 3]) data |= 0x80;
 287
 288                 return ~data;
 289         }
 290         else if (offset == 3)
 291         {
 292                 uint8 data = 0x2F | (vjs.hardwareTypeNTSC ? 0x10 : 0x00);
 293                 int pad0Index = joystick_ram[1] & 0x0F;
 294 //unused                int pad1Index = (joystick_ram[1] >> 4) & 0x0F;
 295
 296                 if (!(pad0Index & 0x01))
 297                 {
 298                         if (joypad_0_buttons[BUTTON_PAUSE])
 299                                 data ^= 0x01;
 300                         if (joypad_0_buttons[BUTTON_A])
 301                                 data ^= 0x02;
 302                 }
 303                 else if (!(pad0Index & 0x02))
 304                 {
 305                         if (joypad_0_buttons[BUTTON_B])
 306                                 data ^= 0x02;
 307                 }
 308                 else if (!(pad0Index & 0x04))
 309                 {
 310                         if (joypad_0_buttons[BUTTON_C])
 311                                 data ^= 0x02;
 312                 }
 313                 else
 314                 {
 315                         if (joypad_0_buttons[BUTTON_OPTION])
 316                                 data ^= 0x02;
 317                 }
 318                 return data;
 319         }
 320
 321         return joystick_ram[offset];
 322 }
 323
 324 uint16 joystick_word_read(uint32 offset)
 325 {
 326         return ((uint16)joystick_byte_read((offset+0)&0x03) << 8) | joystick_byte_read((offset+1)&0x03);
 327 }
 328
 329 void joystick_byte_write(uint32 offset, uint8 data)
 330 {
 331         joystick_ram[offset&0x03] = data;
 332 }
 333
 334 void joystick_word_write(uint32 offset, uint16 data)
 335 {
 336         offset &= 0x03;
 337         joystick_ram[offset+0] = (data >> 8) & 0xFF;
 338         joystick_ram[offset+1] = data & 0xFF;
 339 }