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