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