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 int start_logging;
  48 int gpu_start_log = 0;
  49 int op_start_log = 0;
  50 int blit_start_log = 0;
  51 int effect_start = 0;
  52 bool interactiveMode = false;
  53 bool iLeft, iRight, iToggle = false;
  54 bool keyHeld1 = false, keyHeld2 = false, keyHeld3 = false;
  55 int objectPtr = 0;
  56
  57
  58 void main_screen_switch(void)
  59 {
  60         extern SDL_Surface * mainSurface;
  61         extern Uint32 mainSurfaceFlags;
  62         extern bool fullscreen;
  63
  64         fullscreen = !fullscreen;
  65         mainSurfaceFlags &= ~SDL_FULLSCREEN;
  66         if (fullscreen)
  67                 mainSurfaceFlags |= SDL_FULLSCREEN;
  68
  69 //???Should we do this???
  70 //      SDL_FreeSurface(mainSurface);
  71         mainSurface = SDL_SetVideoMode(tom_width, tom_height, 16, mainSurfaceFlags);
  72
  73         if (mainSurface == NULL)
  74         {
  75                 WriteLog("Joystick: SDL is unable to set the video mode: %s\n", SDL_GetError());
  76                 exit(1);
  77         }
  78
  79         SDL_WM_SetCaption("Virtual Jaguar", "Virtual Jaguar");
  80 /*      if (fullscreen)
  81                 console.option("fullscreen output");
  82         else
  83                 console.option("windowed output");*/
  84
  85 //      console.close();
  86 //      console.open("Virtual Jaguar", tom_width, tom_height, format);
  87 }
  88
  89 void joystick_init(void)
  90 {
  91         joystick_reset();
  92 }
  93
  94 void joystick_exec(void)
  95 {
  96         extern SDL_Joystick * joystick;
  97         extern bool useJoystick;
  98         uint8 * keystate = SDL_GetKeyState(NULL);
  99 //      extern Console console;
 100
 101         memset(joypad_0_buttons, 0, 21);
 102         memset(joypad_1_buttons, 0, 21);
 103         gpu_start_log = 0;                                                      // Only log while key down!
 104         effect_start = 0;
 105         blit_start_log = 0;
 106         iLeft = iRight = false;
 107
 108         if ((keystate[SDLK_LALT] || keystate[SDLK_RALT]) & keystate[SDLK_RETURN])
 109                 main_screen_switch();
 110
 111         /* Added/Changed by SDLEMU (http://sdlemu.ngemu.com) */
 112
 113         if (keystate[SDLK_UP])          joypad_0_buttons[BUTTON_U] = 0x01;
 114         if (keystate[SDLK_DOWN])        joypad_0_buttons[BUTTON_D] = 0x01;
 115         if (keystate[SDLK_LEFT])        joypad_0_buttons[BUTTON_L] = 0x01;
 116         if (keystate[SDLK_RIGHT])       joypad_0_buttons[BUTTON_R] = 0x01;
 117         // The buttons are labelled C,B,A on the controller (going from left to right)
 118         if (keystate[SDLK_z])           joypad_0_buttons[BUTTON_C] = 0x01;
 119         if (keystate[SDLK_x])           joypad_0_buttons[BUTTON_B] = 0x01;
 120         if (keystate[SDLK_c])           joypad_0_buttons[BUTTON_A] = 0x01;
 121         if (keystate[SDLK_TAB])         joypad_0_buttons[BUTTON_OPTION] = 0x01;
 122         if (keystate[SDLK_RETURN])      joypad_0_buttons[BUTTON_PAUSE] = 0x01;
 123         if (keystate[SDLK_q])
 124                 start_logging = 1;
 125         if (keystate[SDLK_w])
 126                 gpu_reset_stats();
 127 //      if (keystate[SDLK_u])           jaguar_long_write(0xf1c384,jaguar_long_read(0xf1c384)+1);
 128         if (keystate[SDLK_d])
 129                 DumpMainMemory();
 130         if (keystate[SDLK_l])
 131                 gpu_start_log = 1;
 132         if (keystate[SDLK_o])
 133                 op_start_log = 1;
 134         if (keystate[SDLK_b])
 135                 blit_start_log = 1;
 136         if (keystate[SDLK_1])
 137                 effect_start = 1;
 138
 139         if (keystate[SDLK_i])
 140                 interactiveMode = true;
 141
 142         if (keystate[SDLK_8] && interactiveMode)
 143         {
 144                 if (!keyHeld1)
 145                         objectPtr--, keyHeld1 = true;
 146         }
 147         else
 148                 keyHeld1 = false;
 149
 150         if (keystate[SDLK_0] && interactiveMode)
 151         {
 152                 if (!keyHeld2)
 153                         objectPtr++, keyHeld2 = true;
 154         }
 155         else
 156                 keyHeld2 = false;
 157
 158         if (keystate[SDLK_9] && interactiveMode)
 159         {
 160                 if (!keyHeld3)
 161                         iToggle = !iToggle, keyHeld3 = true;
 162         }
 163         else
 164                 keyHeld3 = false;
 165
 166         if (keystate[SDLK_KP0])         joypad_0_buttons[BUTTON_0] = 0x01;
 167         if (keystate[SDLK_KP1])         joypad_0_buttons[BUTTON_1] = 0x01;
 168         if (keystate[SDLK_KP2])         joypad_0_buttons[BUTTON_2] = 0x01;
 169         if (keystate[SDLK_KP3])         joypad_0_buttons[BUTTON_3] = 0x01;
 170         if (keystate[SDLK_KP4])         joypad_0_buttons[BUTTON_4] = 0x01;
 171         if (keystate[SDLK_KP5])         joypad_0_buttons[BUTTON_5] = 0x01;
 172         if (keystate[SDLK_KP6])         joypad_0_buttons[BUTTON_6] = 0x01;
 173         if (keystate[SDLK_KP7])         joypad_0_buttons[BUTTON_7] = 0x01;
 174         if (keystate[SDLK_KP8])         joypad_0_buttons[BUTTON_8] = 0x01;
 175         if (keystate[SDLK_KP9])         joypad_0_buttons[BUTTON_9] = 0x01;
 176
 177     if (keystate[SDLK_ESCAPE])
 178         finished = true;
 179
 180     /* Added/Changed by SDLEMU (http://sdlemu.ngemu.com */
 181     /* Joystick support                                 */
 182
 183 //    if (console.JoyEnabled() == 1)
 184     if (useJoystick)
 185     {
 186 //              int16 x = SDL_JoystickGetAxis(console.joystick, 0),
 187 //                      y = SDL_JoystickGetAxis(console.joystick, 1);
 188                 int16 x = SDL_JoystickGetAxis(joystick, 0),
 189                         y = SDL_JoystickGetAxis(joystick, 1);
 190
 191                 if (x > 16384)
 192                         joypad_0_buttons[BUTTON_R] = 0x01;
 193                 if (x < -16384)
 194                         joypad_0_buttons[BUTTON_L] = 0x01;
 195                 if (y > 16384)
 196                         joypad_0_buttons[BUTTON_D] = 0x01;
 197                 if (y < -16384)
 198                         joypad_0_buttons[BUTTON_U] = 0x01;
 199
 200 //              if (SDL_JoystickGetButton(console.joystick, 0) == SDL_PRESSED)
 201                 if (SDL_JoystickGetButton(joystick, 0) == SDL_PRESSED)
 202                         joypad_0_buttons[BUTTON_A] = 0x01;
 203 //              if (SDL_JoystickGetButton(console.joystick, 1) == SDL_PRESSED)
 204                 if (SDL_JoystickGetButton(joystick, 1) == SDL_PRESSED)
 205                         joypad_0_buttons[BUTTON_B] = 0x01;
 206 //              if (SDL_JoystickGetButton(console.joystick, 2) == SDL_PRESSED)
 207                 if (SDL_JoystickGetButton(joystick, 2) == SDL_PRESSED)
 208                         joypad_0_buttons[BUTTON_C] = 0x01;
 209         }
 210
 211         /* ADDED by SDLEMU (http://sdlemu.ngemu.com */
 212         /* Needed to make sure that the events queue is empty */
 213     SDL_PumpEvents();
 214 }
 215
 216 void joystick_reset(void)
 217 {
 218         memset(joystick_ram, 0x00, 4);
 219         memset(joypad_0_buttons, 0, 21);
 220         memset(joypad_1_buttons, 0, 21);
 221 }
 222
 223 void joystick_done(void)
 224 {
 225 }
 226
 227 void joystick_byte_write(uint32 offset, uint8 data)
 228 {
 229         joystick_ram[offset&0x03] = data;
 230 }
 231
 232 void joystick_word_write(uint32 offset, uint16 data)
 233 {
 234         offset &= 0x03;
 235         joystick_ram[offset+0] = (data >> 8) & 0xFF;
 236         joystick_ram[offset+1] = data & 0xFF;
 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
 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 = ((1 << 5) | (1 << 4) | 0x0F);
 283                 uint8 data = 0x2F | (hardwareTypeNTSC ? 0x10 : 0x00);
 284                 int pad0Index = joystick_ram[1] & 0x0F;
 285 //unused                int pad1Index = (joystick_ram[1] >> 4) & 0x0F;
 286
 287                 if (!(pad0Index & 0x01))
 288                 {
 289                         if (joypad_0_buttons[BUTTON_PAUSE])
 290                                 data ^= 0x01;
 291                         if (joypad_0_buttons[BUTTON_A])
 292                                 data ^= 0x02;
 293                 }
 294                 else if (!(pad0Index & 0x02))
 295                 {
 296                         if (joypad_0_buttons[BUTTON_B])
 297                                 data ^= 0x02;
 298                 }
 299                 else if (!(pad0Index & 0x04))
 300                 {
 301                         if (joypad_0_buttons[BUTTON_C])
 302                                 data ^= 0x02;
 303                 }
 304                 else
 305                 {
 306                         if (joypad_0_buttons[BUTTON_OPTION])
 307                                 data ^= 0x02;
 308                 }
 309                 return data;
 310         }
 311
 312         return joystick_ram[offset];
 313 }
 314
 315 uint16 joystick_word_read(uint32 offset)
 316 {
 317         return ((uint16)joystick_byte_read((offset+0)&0x03) << 8) | joystick_byte_read((offset+1)&0x03);
 318 }