dos/input.c

   1 /*
   2  * input.h
   3  * Copyright (C) 1998 Brainchild Design - http://brainchilddesign.com/
   4  *
   5  * Copyright (C) 2001 tarzeau@space.ch
   6  *
   7  * Copyright (C) 2002 Florian Schulze - crow@icculus.org
   8  *
   9  * Portions of this code are from the MPEG software simulation group
  10  * idct implementation. This code will be replaced with a new
  11  * implementation soon.
  12  *
  13  * This file is part of Jump'n'Bump.
  14  *
  15  * Jump'n'Bump is free software; you can redistribute it and/or modify
  16  * it under the terms of the GNU General Public License as published by
  17  * the Free Software Foundation; either version 2 of the License, or
  18  * (at your option) any later version.
  19  *
  20  * Jump'n'Bump is distributed in the hope that it will be useful,
  21  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  22  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  23  * GNU General Public License for more details.
  24  *
  25  * You should have received a copy of the GNU General Public License
  26  * along with this program; if not, write to the Free Software
  27  * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
  28  */
  29
  30 #include "globals.h"
  31
  32 static int num_mouse_buttons;
  33
  34 int init_joy(void)
  35 {
  36         int c1;
  37
  38         outportb(0x201, 0);
  39         while (c1 < 0x7fff) {
  40                 if ((inportb(0x201) & 1) == 0)
  41                         break;
  42                 c1++;
  43         }
  44         if (c1 != 0x7fff)
  45                 return 1;
  46         else
  47                 return 0;
  48 }
  49
  50
  51 void read_joy(void)
  52 {
  53         int c1;
  54         int x, y;
  55         int s1 = 0;
  56         char flag;
  57
  58         c1 = x = y = flag = 0;
  59         outportb(0x201, 0);
  60
  61         while (1) {
  62
  63                 s1 = inportb(0x201);
  64
  65                 if (x == 0) {
  66                         if ((s1 & 1) == 0)
  67                                 x = c1;
  68                 }
  69                 if (y == 0) {
  70                         if ((s1 & 2) == 0)
  71                                 y = c1;
  72                 }
  73                 if (x != 0 && y != 0)
  74                         break;
  75
  76                 c1++;
  77                 if (c1 == 0x7fff) {
  78                         flag = 1;
  79                         break;
  80                 }
  81
  82         }
  83
  84         if (flag == 0) {
  85                 joy.raw_x = x;
  86                 joy.raw_y = y;
  87
  88                 if (joy.raw_x < joy.calib_data.x2)
  89                         joy.x = ((long) (joy.raw_x - joy.calib_data.x2) << 10) / (joy.calib_data.x2 - joy.calib_data.x1);
  90                 else
  91                         joy.x = ((long) (joy.raw_x - joy.calib_data.x2) << 10) / (joy.calib_data.x3 - joy.calib_data.x2);
  92                 if (joy.raw_y < joy.calib_data.y2)
  93                         joy.y = ((long) (joy.raw_y - joy.calib_data.y2) << 10) / (joy.calib_data.y2 - joy.calib_data.y1);
  94                 else
  95                         joy.y = ((long) (joy.raw_y - joy.calib_data.y2) << 10) / (joy.calib_data.y3 - joy.calib_data.y2);
  96
  97                 if (joy.x < -1024)
  98                         joy.x = -1024;
  99                 if (joy.x > 1024)
 100                         joy.x = 1024;
 101                 if (joy.y < -1024)
 102                         joy.y = -1024;
 103                 if (joy.y > 1024)
 104                         joy.y = 1024;
 105
 106                 s1 = inportb(0x201);
 107                 joy.but1 = (((s1 >> 4) & 1) ^ 1);
 108                 joy.but2 = (((s1 >> 5) & 1) ^ 1);
 109         } else {
 110                 joy.raw_x = joy.calib_data.x2;
 111                 joy.raw_y = joy.calib_data.y2;
 112
 113                 joy.x = joy.y = 0;
 114
 115                 joy.but1 = joy.but2 = 0;
 116         }
 117
 118 }
 119
 120
 121 int calib_joy(int type)
 122 {
 123         int c1;
 124         int x, y;
 125         int s1 = 0;
 126         int num_times;
 127         char flag = 0;
 128
 129         while (joy.but1 == 1) {
 130                 s1 = inportb(0x201);
 131                 joy.but1 = (((s1 >> 4) & 1) ^ 1);
 132                 if (key_pressed(1) == 1) {
 133                         while (key_pressed(1) == 1);
 134                         return 1;
 135                 }
 136         }
 137
 138         num_times = 0;
 139
 140         while (joy.but1 == 0) {
 141
 142                 c1 = x = y = flag = 0;
 143                 outportb(0x201, 0);
 144
 145                 while (1) {
 146
 147                         s1 = inportb(0x201);
 148
 149                         if (x == 0) {
 150                                 if ((s1 & 1) == 0)
 151                                         x = c1;
 152                         }
 153                         if (y == 0) {
 154                                 if ((s1 & 2) == 0)
 155                                         y = c1;
 156                         }
 157                         if (x != 0 && y != 0)
 158                                 break;
 159
 160                         c1++;
 161                         if (c1 == 0x7fff) {
 162                                 flag = 1;
 163                                 break;
 164                         }
 165
 166                 }
 167
 168                 joy.raw_x = x;
 169                 joy.raw_y = y;
 170
 171                 s1 = inportb(0x201);
 172                 joy.but1 = (((s1 >> 4) & 1) ^ 1);
 173
 174                 if (num_times < 0x7fffffff)
 175                         num_times++;
 176
 177                 if (flag == 1)
 178                         break;
 179
 180                 if (key_pressed(1) == 1) {
 181                         while (key_pressed(1) == 1);
 182                         return 1;
 183                 }
 184
 185         }
 186
 187         if (num_times < 16)
 188                 return 1;
 189
 190         if (flag == 0) {
 191
 192                 switch (type) {
 193                 case 0:
 194                         joy.calib_data.x1 = joy.raw_x;
 195                         joy.calib_data.y1 = joy.raw_y;
 196                         break;
 197                 case 1:
 198                         joy.calib_data.x3 = joy.raw_x;
 199                         joy.calib_data.y3 = joy.raw_y;
 200                         break;
 201                 case 2:
 202                         joy.calib_data.x2 = joy.raw_x;
 203                         joy.calib_data.y2 = joy.raw_y;
 204                         break;
 205                 }
 206
 207                 while (joy.but1 == 1) {
 208                         s1 = inportb(0x201);
 209                         joy.but1 = (((s1 >> 4) & 1) ^ 1);
 210                 }
 211
 212         }
 213
 214         return 0;
 215
 216 }
 217
 218
 219 int init_mouse(int *_num_buttons)
 220 {
 221         __dpmi_regs regs;
 222         int mouse_enabled, num_mouse_buttons;
 223
 224         regs.x.ax = 0;
 225         __dpmi_int(0x33, &regs);
 226         if (regs.x.ax == 0xffff) {
 227                 mouse_enabled = 1;
 228                 num_mouse_buttons = regs.x.bx;
 229                 if (force2 == 1)
 230                         num_mouse_buttons = 2;
 231                 if (force3 == 1)
 232                         num_mouse_buttons = 3;
 233         } else {
 234                 mouse_enabled = 0;
 235         }
 236         if (_num_buttons)
 237                 _num_buttons = num_mouse_buttons;
 238
 239         return mouse_enabled;
 240 }
 241
 242
 243 void read_mouse(void)
 244 {
 245
 246         regs.x.ax = 3;
 247         __dpmi_int(0x33, &regs);
 248         mouse.but1 = regs.x.bx & 1;
 249         mouse.but2 = (regs.x.bx & 2) >> 1;
 250         mouse.but3 = (regs.x.bx & 4) >> 2;
 251
 252 }
 253
 254
 255 void update_player_actions(void)
 256 {
 257         if (main_info.mouse_enabled == 1)
 258                 read_mouse();
 259         if (main_info.joy_enabled == 1)
 260                 read_joy();
 261         player[0].action_left   = key_pressed(KEY_PL1_LEFT) == 1;
 262         player[0].action_right  = key_pressed(KEY_PL1_RIGHT) == 1;
 263         player[0].action_up     = key_pressed(KEY_PL1_JUMP) == 1;
 264         player[1].action_left   = key_pressed(KEY_PL2_LEFT) == 1;
 265         player[1].action_right  = key_pressed(KEY_PL2_RIGHT) == 1;
 266         player[1].action_up     = key_pressed(KEY_PL2_JUMP) == 1;
 267         player[2].action_left   = key_pressed(KEY_PL3_LEFT) == 1;
 268         player[2].action_right  = key_pressed(KEY_PL3_RIGHT) == 1;
 269         player[2].action_up     = key_pressed(KEY_PL3_JUMP) == 1;
 270         player[3].action_left   = key_pressed(KEY_PL4_LEFT) == 1;
 271         player[3].action_right  = key_pressed(KEY_PL4_RIGHT) == 1;
 272         player[3].action_up     = key_pressed(KEY_PL4_JUMP) == 1;
 273 }
 274
 275
 276 void init_inputs(void)
 277 {
 278         main_info.mouse_enabled = init_mouse(&num_mouse_buttons);
 279         main_info.joy_enabled = init_joy(&num_mouse_buttons);
 280 }
 281