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