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 //#ifndef __PORT__
  10 //#include "include/stdafx.h"
  11 //#include <mmsystem.h>
  12 //#endif
  13 #include <time.h>
  14 #include <SDL.h>
  15 //#include "SDLptc.h"
  16 #include "jaguar.h"
  17
  18 void main_screen_switch(void);
  19
  20 #define BUTTON_U                0
  21 #define BUTTON_D                1
  22 #define BUTTON_L                2
  23 #define BUTTON_R                3
  24 #define BUTTON_s                4
  25 #define BUTTON_7                5
  26 #define BUTTON_4                6
  27 #define BUTTON_1                7
  28 #define BUTTON_0                8
  29 #define BUTTON_8                9
  30 #define BUTTON_5                10
  31 #define BUTTON_2                11
  32 #define BUTTON_d                12
  33 #define BUTTON_9                13
  34 #define BUTTON_6                14
  35 #define BUTTON_3                15
  36
  37 #define BUTTON_A                16
  38 #define BUTTON_B                17
  39 #define BUTTON_C                18
  40 #define BUTTON_OPTION   19
  41 #define BUTTON_PAUSE    20
  42
  43 static uint8 joystick_ram[4];
  44 static uint8 joypad_0_buttons[21];
  45 static uint8 joypad_1_buttons[21];
  46 extern bool finished;
  47 extern bool showGUI, 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 bool interactiveMode = false;
  54 bool iLeft, iRight, iToggle = false;
  55 bool keyHeld1 = false, keyHeld2 = false, keyHeld3 = false;
  56 int objectPtr = 0;
  57
  58
  59 void main_screen_switch(void)
  60 {
  61         extern SDL_Surface * mainSurface;
  62         extern Uint32 mainSurfaceFlags;
  63         extern bool fullscreen;
  64
  65         fullscreen = !fullscreen;
  66         mainSurfaceFlags &= ~SDL_FULLSCREEN;
  67         if (fullscreen)
  68                 mainSurfaceFlags |= SDL_FULLSCREEN;
  69
  70 //???Should we do this???
  71 //      SDL_FreeSurface(mainSurface);
  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 /*      if (fullscreen)
  82                 console.option("fullscreen output");
  83         else
  84                 console.option("windowed output");*/
  85
  86 //      console.close();
  87 //      console.open("Virtual Jaguar", tom_width, tom_height, format);
  88 }
  89
  90 void joystick_init(void)
  91 {
  92         joystick_reset();
  93 }
  94
  95 void joystick_exec(void)
  96 {
  97         extern SDL_Joystick * joystick;
  98         extern bool useJoystick;
  99         uint8 * keystate = SDL_GetKeyState(NULL);
 100 //      extern Console console;
 101
 102         memset(joypad_0_buttons, 0, 21);
 103         memset(joypad_1_buttons, 0, 21);
 104         gpu_start_log = 0;                                                      // Only log while key down!
 105         effect_start = 0;
 106         blit_start_log = 0;
 107         iLeft = iRight = false;
 108
 109         if ((keystate[SDLK_LALT] || keystate[SDLK_RALT]) & keystate[SDLK_RETURN])
 110                 main_screen_switch();
 111
 112         /* Added/Changed by SDLEMU (http://sdlemu.ngemu.com) */
 113
 114         if (keystate[SDLK_UP])          joypad_0_buttons[BUTTON_U] = 0x01;
 115         if (keystate[SDLK_DOWN])        joypad_0_buttons[BUTTON_D] = 0x01;
 116         if (keystate[SDLK_LEFT])        joypad_0_buttons[BUTTON_L] = 0x01;
 117         if (keystate[SDLK_RIGHT])       joypad_0_buttons[BUTTON_R] = 0x01;
 118         // The buttons are labelled C,B,A on the controller (going from left to right)
 119         if (keystate[SDLK_z])           joypad_0_buttons[BUTTON_C] = 0x01;
 120         if (keystate[SDLK_x])           joypad_0_buttons[BUTTON_B] = 0x01;
 121         if (keystate[SDLK_c])           joypad_0_buttons[BUTTON_A] = 0x01;
 122         if (keystate[SDLK_QUOTE])       joypad_0_buttons[BUTTON_OPTION] = 0x01;
 123         if (keystate[SDLK_RETURN])      joypad_0_buttons[BUTTON_PAUSE] = 0x01;
 124
 125         if (keystate[SDLK_TAB])
 126         {
 127                 if (!GUIKeyHeld)
 128                         showGUI = !showGUI, GUIKeyHeld = true;
 129         }
 130         else
 131                 GUIKeyHeld = false;
 132
 133         if (keystate[SDLK_q])
 134                 start_logging = 1;
 135         if (keystate[SDLK_w])
 136                 gpu_reset_stats();
 137 //      if (keystate[SDLK_u])           jaguar_long_write(0xf1c384,jaguar_long_read(0xf1c384)+1);
 138         if (keystate[SDLK_d])
 139                 DumpMainMemory();
 140         if (keystate[SDLK_l])
 141                 gpu_start_log = 1;
 142         if (keystate[SDLK_o])
 143                 op_start_log = 1;
 144         if (keystate[SDLK_b])
 145                 blit_start_log = 1;
 146         if (keystate[SDLK_1])
 147                 effect_start = 1;
 148
 149         if (keystate[SDLK_i])
 150                 interactiveMode = true;
 151
 152         if (keystate[SDLK_8] && interactiveMode)
 153         {
 154                 if (!keyHeld1)
 155                         objectPtr--, keyHeld1 = true;
 156         }
 157         else
 158                 keyHeld1 = false;
 159
 160         if (keystate[SDLK_0] && interactiveMode)
 161         {
 162                 if (!keyHeld2)
 163                         objectPtr++, keyHeld2 = true;
 164         }
 165         else
 166                 keyHeld2 = false;
 167
 168         if (keystate[SDLK_9] && interactiveMode)
 169         {
 170                 if (!keyHeld3)
 171                         iToggle = !iToggle, keyHeld3 = true;
 172         }
 173         else
 174                 keyHeld3 = false;
 175
 176         if (keystate[SDLK_KP0])         joypad_0_buttons[BUTTON_0] = 0x01;
 177         if (keystate[SDLK_KP1])         joypad_0_buttons[BUTTON_1] = 0x01;
 178         if (keystate[SDLK_KP2])         joypad_0_buttons[BUTTON_2] = 0x01;
 179         if (keystate[SDLK_KP3])         joypad_0_buttons[BUTTON_3] = 0x01;
 180         if (keystate[SDLK_KP4])         joypad_0_buttons[BUTTON_4] = 0x01;
 181         if (keystate[SDLK_KP5])         joypad_0_buttons[BUTTON_5] = 0x01;
 182         if (keystate[SDLK_KP6])         joypad_0_buttons[BUTTON_6] = 0x01;
 183         if (keystate[SDLK_KP7])         joypad_0_buttons[BUTTON_7] = 0x01;
 184         if (keystate[SDLK_KP8])         joypad_0_buttons[BUTTON_8] = 0x01;
 185         if (keystate[SDLK_KP9])         joypad_0_buttons[BUTTON_9] = 0x01;
 186
 187     if (keystate[SDLK_ESCAPE])
 188         finished = true;
 189
 190     /* Added/Changed by SDLEMU (http://sdlemu.ngemu.com */
 191     /* Joystick support                                 */
 192
 193 //    if (console.JoyEnabled() == 1)
 194     if (useJoystick)
 195     {
 196 //              int16 x = SDL_JoystickGetAxis(console.joystick, 0),
 197 //                      y = SDL_JoystickGetAxis(console.joystick, 1);
 198                 int16 x = SDL_JoystickGetAxis(joystick, 0),
 199                         y = SDL_JoystickGetAxis(joystick, 1);
 200
 201                 if (x > 16384)
 202                         joypad_0_buttons[BUTTON_R] = 0x01;
 203                 if (x < -16384)
 204                         joypad_0_buttons[BUTTON_L] = 0x01;
 205                 if (y > 16384)
 206                         joypad_0_buttons[BUTTON_D] = 0x01;
 207                 if (y < -16384)
 208                         joypad_0_buttons[BUTTON_U] = 0x01;
 209
 210 //              if (SDL_JoystickGetButton(console.joystick, 0) == SDL_PRESSED)
 211                 if (SDL_JoystickGetButton(joystick, 0) == SDL_PRESSED)
 212                         joypad_0_buttons[BUTTON_A] = 0x01;
 213 //              if (SDL_JoystickGetButton(console.joystick, 1) == SDL_PRESSED)
 214                 if (SDL_JoystickGetButton(joystick, 1) == SDL_PRESSED)
 215                         joypad_0_buttons[BUTTON_B] = 0x01;
 216 //              if (SDL_JoystickGetButton(console.joystick, 2) == SDL_PRESSED)
 217                 if (SDL_JoystickGetButton(joystick, 2) == SDL_PRESSED)
 218                         joypad_0_buttons[BUTTON_C] = 0x01;
 219         }
 220
 221         /* ADDED by SDLEMU (http://sdlemu.ngemu.com */
 222         /* Needed to make sure that the events queue is empty */
 223     SDL_PumpEvents();
 224 }
 225
 226 void joystick_reset(void)
 227 {
 228         memset(joystick_ram, 0x00, 4);
 229         memset(joypad_0_buttons, 0, 21);
 230         memset(joypad_1_buttons, 0, 21);
 231 }
 232
 233 void joystick_done(void)
 234 {
 235 }
 236
 237 void joystick_byte_write(uint32 offset, uint8 data)
 238 {
 239         joystick_ram[offset&0x03] = data;
 240 }
 241
 242 void joystick_word_write(uint32 offset, uint16 data)
 243 {
 244         offset &= 0x03;
 245         joystick_ram[offset+0] = (data >> 8) & 0xFF;
 246         joystick_ram[offset+1] = data & 0xFF;
 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
 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 = ((1 << 5) | (1 << 4) | 0x0F);
 293                 uint8 data = 0x2F | (hardwareTypeNTSC ? 0x10 : 0x00);
 294                 int pad0Index = joystick_ram[1] & 0x0F;
 295 //unused                int pad1Index = (joystick_ram[1] >> 4) & 0x0F;
 296
 297                 if (!(pad0Index & 0x01))
 298                 {
 299                         if (joypad_0_buttons[BUTTON_PAUSE])
 300                                 data ^= 0x01;
 301                         if (joypad_0_buttons[BUTTON_A])
 302                                 data ^= 0x02;
 303                 }
 304                 else if (!(pad0Index & 0x02))
 305                 {
 306                         if (joypad_0_buttons[BUTTON_B])
 307                                 data ^= 0x02;
 308                 }
 309                 else if (!(pad0Index & 0x04))
 310                 {
 311                         if (joypad_0_buttons[BUTTON_C])
 312                                 data ^= 0x02;
 313                 }
 314                 else
 315                 {
 316                         if (joypad_0_buttons[BUTTON_OPTION])
 317                                 data ^= 0x02;
 318                 }
 319                 return data;
 320         }
 321
 322         return joystick_ram[offset];
 323 }
 324
 325 uint16 joystick_word_read(uint32 offset)
 326 {
 327         return ((uint16)joystick_byte_read((offset+0)&0x03) << 8) | joystick_byte_read((offset+1)&0x03);
 328 }