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
  38 #define BUTTON_A                16
  39 #define BUTTON_B                17
  40 #define BUTTON_C                18
  41 #define BUTTON_OPTION   19
  42 #define BUTTON_PAUSE    20
  43
  44 static uint8 joystick_ram[4];
  45 static uint8 joypad_0_buttons[21];
  46 static uint8 joypad_1_buttons[21];
  47 extern bool finished;
  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 void joystick_init(void)
  59 {
  60         joystick_reset();
  61 }
  62
  63 void joystick_exec(void)
  64 {
  65         uint8 * keystate = SDL_GetKeyState(NULL);
  66         extern Console console;
  67
  68         memset(joypad_0_buttons, 0, 21);
  69         memset(joypad_1_buttons, 0, 21);
  70         gpu_start_log = 0;                                                      // Only log while key down!
  71         effect_start = 0;
  72         blit_start_log = 0;
  73         iLeft = iRight = false;
  74
  75         if ((keystate[SDLK_LALT]) & (keystate[SDLK_RETURN]))
  76                 main_screen_switch();
  77
  78         /* Added/Changed by SDLEMU (http://sdlemu.ngemu.com) */
  79
  80         if (keystate[SDLK_UP])          joypad_0_buttons[BUTTON_U] = 0x01;
  81         if (keystate[SDLK_DOWN])        joypad_0_buttons[BUTTON_D] = 0x01;
  82         if (keystate[SDLK_LEFT])        joypad_0_buttons[BUTTON_L] = 0x01;
  83         if (keystate[SDLK_RIGHT])       joypad_0_buttons[BUTTON_R] = 0x01;
  84         // The buttons are labelled C,B,A on the controller (going from left to right)
  85         if (keystate[SDLK_z])           joypad_0_buttons[BUTTON_C] = 0x01;
  86         if (keystate[SDLK_x])           joypad_0_buttons[BUTTON_B] = 0x01;
  87         if (keystate[SDLK_c])           joypad_0_buttons[BUTTON_A] = 0x01;
  88         if (keystate[SDLK_TAB])         joypad_0_buttons[BUTTON_OPTION] = 0x01;
  89         if (keystate[SDLK_RETURN])      joypad_0_buttons[BUTTON_PAUSE] = 0x01;
  90         if (keystate[SDLK_q])
  91                 start_logging = 1;
  92         if (keystate[SDLK_w])
  93                 gpu_reset_stats();
  94 //      if (keystate[SDLK_u])           jaguar_long_write(0xf1c384,jaguar_long_read(0xf1c384)+1);
  95         if (keystate[SDLK_d])
  96                 DumpMainMemory();
  97         if (keystate[SDLK_l])
  98                 gpu_start_log = 1;
  99         if (keystate[SDLK_o])
 100                 op_start_log = 1;
 101         if (keystate[SDLK_b])
 102                 blit_start_log = 1;
 103         if (keystate[SDLK_1])
 104                 effect_start = 1;
 105
 106         if (keystate[SDLK_i])
 107                 interactiveMode = true;
 108
 109         if (keystate[SDLK_8] && interactiveMode)
 110         {
 111                 if (!keyHeld1)
 112                         objectPtr--, keyHeld1 = true;
 113         }
 114         else
 115                 keyHeld1 = false;
 116
 117         if (keystate[SDLK_0] && interactiveMode)
 118         {
 119                 if (!keyHeld2)
 120                         objectPtr++, keyHeld2 = true;
 121         }
 122         else
 123                 keyHeld2 = false;
 124
 125         if (keystate[SDLK_9] && interactiveMode)
 126         {
 127                 if (!keyHeld3)
 128                         iToggle = !iToggle, keyHeld3 = true;
 129         }
 130         else
 131                 keyHeld3 = false;
 132
 133         if (keystate[SDLK_KP0])         joypad_0_buttons[BUTTON_0] = 0x01;
 134         if (keystate[SDLK_KP1])         joypad_0_buttons[BUTTON_1] = 0x01;
 135         if (keystate[SDLK_KP2])         joypad_0_buttons[BUTTON_2] = 0x01;
 136         if (keystate[SDLK_KP3])         joypad_0_buttons[BUTTON_3] = 0x01;
 137         if (keystate[SDLK_KP4])         joypad_0_buttons[BUTTON_4] = 0x01;
 138         if (keystate[SDLK_KP5])         joypad_0_buttons[BUTTON_5] = 0x01;
 139         if (keystate[SDLK_KP6])         joypad_0_buttons[BUTTON_6] = 0x01;
 140         if (keystate[SDLK_KP7])         joypad_0_buttons[BUTTON_7] = 0x01;
 141         if (keystate[SDLK_KP8])         joypad_0_buttons[BUTTON_8] = 0x01;
 142         if (keystate[SDLK_KP9])         joypad_0_buttons[BUTTON_9] = 0x01;
 143
 144     if (keystate[SDLK_ESCAPE])
 145         finished = true;
 146
 147     /* Added/Changed by SDLEMU (http://sdlemu.ngemu.com */
 148     /* Joystick support                                 */
 149
 150     if (console.JoyEnabled() == 1)
 151     {
 152                 int16 x = SDL_JoystickGetAxis(console.joystick, 0),
 153                         y = SDL_JoystickGetAxis(console.joystick, 1);
 154
 155                 if (x > 16384)
 156                         joypad_0_buttons[BUTTON_R] = 0x01;
 157                 if (x < -16384)
 158                         joypad_0_buttons[BUTTON_L] = 0x01;
 159                 if (y > 16384)
 160                         joypad_0_buttons[BUTTON_D] = 0x01;
 161                 if (y < -16384)
 162                         joypad_0_buttons[BUTTON_U] = 0x01;
 163
 164                 if (SDL_JoystickGetButton(console.joystick, 0) == SDL_PRESSED)
 165                         joypad_0_buttons[BUTTON_A] = 0x01;
 166                 if (SDL_JoystickGetButton(console.joystick, 1) == SDL_PRESSED)
 167                         joypad_0_buttons[BUTTON_B] = 0x01;
 168                 if (SDL_JoystickGetButton(console.joystick, 2) == SDL_PRESSED)
 169                         joypad_0_buttons[BUTTON_C] = 0x01;
 170         }
 171
 172         /* ADDED by SDLEMU (http://sdlemu.ngemu.com */
 173         /* Needed to make sure that the events queue is empty */
 174     SDL_PumpEvents();
 175 }
 176
 177 void joystick_reset(void)
 178 {
 179         memset(joystick_ram, 0x00, 4);
 180         memset(joypad_0_buttons, 0, 21);
 181         memset(joypad_1_buttons, 0, 21);
 182 }
 183
 184 void joystick_done(void)
 185 {
 186 }
 187
 188 void joystick_byte_write(uint32 offset, uint8 data)
 189 {
 190         joystick_ram[offset&0x03] = data;
 191 }
 192
 193 void joystick_word_write(uint32 offset, uint16 data)
 194 {
 195         offset &= 0x03;
 196         joystick_ram[offset+0] = (data >> 8) & 0xFF;
 197         joystick_ram[offset+1] = data & 0xFF;
 198 }
 199
 200 uint8 joystick_byte_read(uint32 offset)
 201 {
 202         extern bool hardwareTypeNTSC;
 203         offset &= 0x03;
 204
 205         if (offset == 0)
 206         {
 207                 uint8 data = 0x00;
 208                 int pad0Index = joystick_ram[1] & 0x0F;
 209                 int pad1Index = (joystick_ram[1] >> 4) & 0x0F;
 210
 211 // This is bad--we're assuming that a bit is set in the last case
 212                 if (!(pad0Index & 0x01))
 213                         pad0Index = 0;
 214                 else if (!(pad0Index & 0x02))
 215                         pad0Index = 1;
 216                 else if (!(pad0Index & 0x04))
 217                         pad0Index = 2;
 218                 else
 219                         pad0Index = 3;
 220
 221                 if (!(pad1Index & 0x01))
 222                         pad1Index = 0;
 223                 else if (!(pad1Index & 0x02))
 224                         pad1Index = 1;
 225                 else if (!(pad1Index & 0x04))
 226                         pad1Index = 2;
 227                 else
 228                         pad1Index = 3;
 229
 230                 if (joypad_0_buttons[(pad0Index << 2) + 0])     data |= 0x01;
 231                 if (joypad_0_buttons[(pad0Index << 2) + 1]) data |= 0x02;
 232                 if (joypad_0_buttons[(pad0Index << 2) + 2]) data |= 0x04;
 233                 if (joypad_0_buttons[(pad0Index << 2) + 3]) data |= 0x08;
 234                 if (joypad_1_buttons[(pad1Index << 2) + 0]) data |= 0x10;
 235                 if (joypad_1_buttons[(pad1Index << 2) + 1]) data |= 0x20;
 236                 if (joypad_1_buttons[(pad1Index << 2) + 2]) data |= 0x40;
 237                 if (joypad_1_buttons[(pad1Index << 2) + 3]) data |= 0x80;
 238
 239                 return ~data;
 240         }
 241         else if (offset == 3)
 242         {
 243 //              uint8 data = ((1 << 5) | (1 << 4) | 0x0F);
 244                 uint8 data = 0x2F | (hardwareTypeNTSC ? 0x10 : 0x00);
 245                 int pad0Index = joystick_ram[1] & 0x0F;
 246 //unused                int pad1Index = (joystick_ram[1] >> 4) & 0x0F;
 247
 248                 if (!(pad0Index & 0x01))
 249                 {
 250                         if (joypad_0_buttons[BUTTON_PAUSE])
 251                                 data ^= 0x01;
 252                         if (joypad_0_buttons[BUTTON_A])
 253                                 data ^= 0x02;
 254                 }
 255                 else if (!(pad0Index & 0x02))
 256                 {
 257                         if (joypad_0_buttons[BUTTON_B])
 258                                 data ^= 0x02;
 259                 }
 260                 else if (!(pad0Index & 0x04))
 261                 {
 262                         if (joypad_0_buttons[BUTTON_C])
 263                                 data ^= 0x02;
 264                 }
 265                 else
 266                 {
 267                         if (joypad_0_buttons[BUTTON_OPTION])
 268                                 data ^= 0x02;
 269                 }
 270                 return data;
 271         }
 272
 273         return joystick_ram[offset];
 274 }
 275
 276 uint16 joystick_word_read(uint32 offset)
 277 {
 278         return ((uint16)joystick_byte_read((offset+0)&0x03) << 8) | joystick_byte_read((offset+1)&0x03);
 279 }