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
  13 #define BUTTON_U                0
  14 #define BUTTON_D                1
  15 #define BUTTON_L                2
  16 #define BUTTON_R                3
  17 #define BUTTON_s                4
  18 #define BUTTON_7                5
  19 #define BUTTON_4                6
  20 #define BUTTON_1                7
  21 #define BUTTON_0                8
  22 #define BUTTON_8                9
  23 #define BUTTON_5                10
  24 #define BUTTON_2                11
  25 #define BUTTON_d                12
  26 #define BUTTON_9                13
  27 #define BUTTON_6                14
  28 #define BUTTON_3                15
  29
  30 #define BUTTON_A                16
  31 #define BUTTON_B                17
  32 #define BUTTON_C                18
  33 #define BUTTON_OPTION   19
  34 #define BUTTON_PAUSE    20
  35
  36 // Private function prototypes
  37
  38 void main_screen_switch(void);
  39
  40 // Global vars
  41
  42 static uint8 joystick_ram[4];
  43 static uint8 joypad_0_buttons[21];
  44 static uint8 joypad_1_buttons[21];
  45 extern bool finished;
  46 extern bool showGUI;
  47 bool GUIKeyHeld = false;
  48 extern int start_logging;
  49 int gpu_start_log = 0;
  50 int op_start_log = 0;
  51 int blit_start_log = 0;
  52 int effect_start = 0;
  53 int effect_start2 = 0, effect_start3 = 0, effect_start4 = 0, effect_start5 = 0, effect_start6 = 0;
  54 bool interactiveMode = false;
  55 bool iLeft, iRight, iToggle = false;
  56 bool keyHeld1 = false, keyHeld2 = false, keyHeld3 = false;
  57 int objectPtr = 0;
  58 bool startMemLog = false;
  59
  60
  61 void main_screen_switch(void)
  62 {
  63         extern SDL_Surface * mainSurface;
  64         extern Uint32 mainSurfaceFlags;
  65         extern bool fullscreen;
  66
  67         fullscreen = !fullscreen;
  68         mainSurfaceFlags &= ~SDL_FULLSCREEN;
  69         if (fullscreen)
  70                 mainSurfaceFlags |= SDL_FULLSCREEN;
  71
  72         mainSurface = SDL_SetVideoMode(tom_width, tom_height, 16, mainSurfaceFlags);
  73
  74         if (mainSurface == NULL)
  75         {
  76                 WriteLog("Joystick: SDL is unable to set the video mode: %s\n", SDL_GetError());
  77                 exit(1);
  78         }
  79
  80         SDL_WM_SetCaption("Virtual Jaguar", "Virtual Jaguar");
  81 }
  82
  83 void joystick_init(void)
  84 {
  85         joystick_reset();
  86 }
  87
  88 void joystick_exec(void)
  89 {
  90         extern SDL_Joystick * joystick;
  91         extern bool useJoystick;
  92         uint8 * keystate = SDL_GetKeyState(NULL);
  93
  94         memset(joypad_0_buttons, 0, 21);
  95         memset(joypad_1_buttons, 0, 21);
  96         gpu_start_log = 0;                                                      // Only log while key down!
  97         effect_start = 0;
  98         effect_start2 = effect_start3 = effect_start4 = effect_start5 = effect_start6 = 0;
  99         blit_start_log = 0;
 100         iLeft = iRight = false;
 101
 102         if ((keystate[SDLK_LALT] || keystate[SDLK_RALT]) & keystate[SDLK_RETURN])
 103                 main_screen_switch();
 104
 105         /* Added/Changed by SDLEMU (http://sdlemu.ngemu.com) */
 106
 107         if (keystate[SDLK_UP])          joypad_0_buttons[BUTTON_U] = 0x01;
 108         if (keystate[SDLK_DOWN])        joypad_0_buttons[BUTTON_D] = 0x01;
 109         if (keystate[SDLK_LEFT])        joypad_0_buttons[BUTTON_L] = 0x01;
 110         if (keystate[SDLK_RIGHT])       joypad_0_buttons[BUTTON_R] = 0x01;
 111         // The buttons are labelled C,B,A on the controller (going from left to right)
 112         if (keystate[SDLK_z])           joypad_0_buttons[BUTTON_C] = 0x01;
 113         if (keystate[SDLK_x])           joypad_0_buttons[BUTTON_B] = 0x01;
 114         if (keystate[SDLK_c])           joypad_0_buttons[BUTTON_A] = 0x01;
 115 //I may yet move these to O and P...
 116         if (keystate[SDLK_QUOTE])       joypad_0_buttons[BUTTON_OPTION] = 0x01;
 117         if (keystate[SDLK_RETURN])      joypad_0_buttons[BUTTON_PAUSE] = 0x01;
 118
 119         if (keystate[SDLK_TAB])
 120         {
 121                 if (!GUIKeyHeld)
 122                         showGUI = !showGUI, GUIKeyHeld = true;
 123         }
 124         else
 125                 GUIKeyHeld = false;
 126
 127         if (keystate[SDLK_q])
 128                 start_logging = 1;
 129         if (keystate[SDLK_w])
 130                 gpu_reset_stats();
 131 //      if (keystate[SDLK_u])           jaguar_long_write(0xf1c384,jaguar_long_read(0xf1c384)+1);
 132         if (keystate[SDLK_d])
 133                 DumpMainMemory();
 134         if (keystate[SDLK_l])
 135                 gpu_start_log = 1;
 136         if (keystate[SDLK_o])
 137                 op_start_log = 1;
 138         if (keystate[SDLK_b])
 139                 blit_start_log = 1;
 140
 141         if (keystate[SDLK_1])
 142                 effect_start = 1;
 143         if (keystate[SDLK_2])
 144                 effect_start2 = 1;
 145         if (keystate[SDLK_3])
 146                 effect_start3 = 1;
 147         if (keystate[SDLK_4])
 148                 effect_start4 = 1;
 149         if (keystate[SDLK_5])
 150                 effect_start5 = 1;
 151         if (keystate[SDLK_6])
 152                 effect_start6 = 1;
 153
 154         if (keystate[SDLK_i])
 155                 interactiveMode = true;
 156
 157         if (keystate[SDLK_8] && interactiveMode)
 158         {
 159                 if (!keyHeld1)
 160                         objectPtr--, keyHeld1 = true;
 161         }
 162         else
 163                 keyHeld1 = false;
 164
 165         if (keystate[SDLK_0] && interactiveMode)
 166         {
 167                 if (!keyHeld2)
 168                         objectPtr++, keyHeld2 = true;
 169         }
 170         else
 171                 keyHeld2 = false;
 172
 173         if (keystate[SDLK_9] && interactiveMode)
 174         {
 175                 if (!keyHeld3)
 176                         iToggle = !iToggle, keyHeld3 = true;
 177         }
 178         else
 179                 keyHeld3 = false;
 180
 181         if (keystate[SDLK_e])
 182                 startMemLog = true;
 183         if (keystate[SDLK_r])
 184                 WriteLog("\n--------> MARK!\n\n");
 185
 186         if (keystate[SDLK_KP0])         joypad_0_buttons[BUTTON_0] = 0x01;
 187         if (keystate[SDLK_KP1])         joypad_0_buttons[BUTTON_1] = 0x01;
 188         if (keystate[SDLK_KP2])         joypad_0_buttons[BUTTON_2] = 0x01;
 189         if (keystate[SDLK_KP3])         joypad_0_buttons[BUTTON_3] = 0x01;
 190         if (keystate[SDLK_KP4])         joypad_0_buttons[BUTTON_4] = 0x01;
 191         if (keystate[SDLK_KP5])         joypad_0_buttons[BUTTON_5] = 0x01;
 192         if (keystate[SDLK_KP6])         joypad_0_buttons[BUTTON_6] = 0x01;
 193         if (keystate[SDLK_KP7])         joypad_0_buttons[BUTTON_7] = 0x01;
 194         if (keystate[SDLK_KP8])         joypad_0_buttons[BUTTON_8] = 0x01;
 195         if (keystate[SDLK_KP9])         joypad_0_buttons[BUTTON_9] = 0x01;
 196
 197     if (keystate[SDLK_ESCAPE])
 198         finished = true;
 199
 200     /* Added/Changed by SDLEMU (http://sdlemu.ngemu.com */
 201     /* Joystick support                                 */
 202
 203     if (useJoystick)
 204     {
 205                 int16 x = SDL_JoystickGetAxis(joystick, 0),
 206                         y = SDL_JoystickGetAxis(joystick, 1);
 207
 208                 if (x > 16384)
 209                         joypad_0_buttons[BUTTON_R] = 0x01;
 210                 if (x < -16384)
 211                         joypad_0_buttons[BUTTON_L] = 0x01;
 212                 if (y > 16384)
 213                         joypad_0_buttons[BUTTON_D] = 0x01;
 214                 if (y < -16384)
 215                         joypad_0_buttons[BUTTON_U] = 0x01;
 216
 217                 if (SDL_JoystickGetButton(joystick, 0) == SDL_PRESSED)
 218                         joypad_0_buttons[BUTTON_A] = 0x01;
 219                 if (SDL_JoystickGetButton(joystick, 1) == SDL_PRESSED)
 220                         joypad_0_buttons[BUTTON_B] = 0x01;
 221                 if (SDL_JoystickGetButton(joystick, 2) == SDL_PRESSED)
 222                         joypad_0_buttons[BUTTON_C] = 0x01;
 223         }
 224
 225         /* ADDED by SDLEMU (http://sdlemu.ngemu.com */
 226         /* Needed to make sure that the events queue is empty */
 227     SDL_PumpEvents();
 228 }
 229
 230 void joystick_reset(void)
 231 {
 232         memset(joystick_ram, 0x00, 4);
 233         memset(joypad_0_buttons, 0, 21);
 234         memset(joypad_1_buttons, 0, 21);
 235 }
 236
 237 void joystick_done(void)
 238 {
 239 }
 240
 241 uint8 joystick_byte_read(uint32 offset)
 242 {
 243         extern bool hardwareTypeNTSC;
 244         offset &= 0x03;
 245
 246         if (offset == 0)
 247         {
 248                 uint8 data = 0x00;
 249                 int pad0Index = joystick_ram[1] & 0x0F;
 250                 int pad1Index = (joystick_ram[1] >> 4) & 0x0F;
 251
 252 // This is bad--we're assuming that a bit is set in the last case. Might not be so!
 253                 if (!(pad0Index & 0x01))
 254                         pad0Index = 0;
 255                 else if (!(pad0Index & 0x02))
 256                         pad0Index = 1;
 257                 else if (!(pad0Index & 0x04))
 258                         pad0Index = 2;
 259                 else
 260                         pad0Index = 3;
 261
 262                 if (!(pad1Index & 0x01))
 263                         pad1Index = 0;
 264                 else if (!(pad1Index & 0x02))
 265                         pad1Index = 1;
 266                 else if (!(pad1Index & 0x04))
 267                         pad1Index = 2;
 268                 else
 269                         pad1Index = 3;
 270
 271                 if (joypad_0_buttons[(pad0Index << 2) + 0])     data |= 0x01;
 272                 if (joypad_0_buttons[(pad0Index << 2) + 1]) data |= 0x02;
 273                 if (joypad_0_buttons[(pad0Index << 2) + 2]) data |= 0x04;
 274                 if (joypad_0_buttons[(pad0Index << 2) + 3]) data |= 0x08;
 275                 if (joypad_1_buttons[(pad1Index << 2) + 0]) data |= 0x10;
 276                 if (joypad_1_buttons[(pad1Index << 2) + 1]) data |= 0x20;
 277                 if (joypad_1_buttons[(pad1Index << 2) + 2]) data |= 0x40;
 278                 if (joypad_1_buttons[(pad1Index << 2) + 3]) data |= 0x80;
 279
 280                 return ~data;
 281         }
 282         else if (offset == 3)
 283         {
 284                 uint8 data = 0x2F | (hardwareTypeNTSC ? 0x10 : 0x00);
 285                 int pad0Index = joystick_ram[1] & 0x0F;
 286 //unused                int pad1Index = (joystick_ram[1] >> 4) & 0x0F;
 287
 288                 if (!(pad0Index & 0x01))
 289                 {
 290                         if (joypad_0_buttons[BUTTON_PAUSE])
 291                                 data ^= 0x01;
 292                         if (joypad_0_buttons[BUTTON_A])
 293                                 data ^= 0x02;
 294                 }
 295                 else if (!(pad0Index & 0x02))
 296                 {
 297                         if (joypad_0_buttons[BUTTON_B])
 298                                 data ^= 0x02;
 299                 }
 300                 else if (!(pad0Index & 0x04))
 301                 {
 302                         if (joypad_0_buttons[BUTTON_C])
 303                                 data ^= 0x02;
 304                 }
 305                 else
 306                 {
 307                         if (joypad_0_buttons[BUTTON_OPTION])
 308                                 data ^= 0x02;
 309                 }
 310                 return data;
 311         }
 312
 313         return joystick_ram[offset];
 314 }
 315
 316 uint16 joystick_word_read(uint32 offset)
 317 {
 318         return ((uint16)joystick_byte_read((offset+0)&0x03) << 8) | joystick_byte_read((offset+1)&0x03);
 319 }
 320
 321 void joystick_byte_write(uint32 offset, uint8 data)
 322 {
 323         joystick_ram[offset&0x03] = data;
 324 }
 325
 326 void joystick_word_write(uint32 offset, uint16 data)
 327 {
 328         offset &= 0x03;
 329         joystick_ram[offset+0] = (data >> 8) & 0xFF;
 330         joystick_ram[offset+1] = data & 0xFF;
 331 }