dos/input.c

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