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