chiark - git - mdw - newkind/blob - keyboard.c

   1 /*
   2  * Elite - The New Kind.
   3  *
   4  * Allegro version of the keyboard routines.
   5  *
   6  * The code in this file has not been derived from the original Elite code.
   7  * Written by C.J.Pinder 1999-2001.
   8  * email: <christian@newkind.co.uk>
   9  *
  10  */
  11
  12 /*
  13  * keyboard.c
  14  *
  15  * Code to handle keyboard input.
  16  */
  17
  18 #include <stdlib.h>
  19 #include <string.h>
  20
  21 #include "allegro.h"
  22
  23 int kbd_F1_pressed;
  24 int kbd_F2_pressed;
  25 int kbd_F3_pressed;
  26 int kbd_F4_pressed;
  27 int kbd_F5_pressed;
  28 int kbd_F6_pressed;
  29 int kbd_F7_pressed;
  30 int kbd_F8_pressed;
  31 int kbd_F9_pressed;
  32 int kbd_F10_pressed;
  33 int kbd_F11_pressed;
  34 int kbd_F12_pressed;
  35 int kbd_y_pressed;
  36 int kbd_n_pressed;
  37 int kbd_zoom_pressed;
  38 int kbd_fire_pressed;
  39 int kbd_ecm_pressed;
  40 int kbd_energy_bomb_pressed;
  41 int kbd_hyperspace_pressed;
  42 int kbd_ctrl_pressed;
  43 int kbd_jump_pressed;
  44 int kbd_escape_pressed;
  45 int kbd_dock_pressed;
  46 int kbd_d_pressed;
  47 int kbd_origin_pressed;
  48 int kbd_find_pressed;
  49 int kbd_fire_missile_pressed;
  50 int kbd_target_missile_pressed;
  51 int kbd_unarm_missile_pressed;
  52 int kbd_pause_pressed;
  53 int kbd_resume_pressed;
  54 int kbd_inc_speed_pressed;
  55 int kbd_i_pressed;
  56 int kbd_dec_speed_pressed;
  57 int kbd_up_pressed;
  58 int kbd_down_pressed;
  59 int kbd_left_pressed;
  60 int kbd_right_pressed;
  61 int kbd_enter_pressed;
  62 int kbd_backspace_pressed;
  63 int kbd_space_pressed;
  64
  65 char old_key[KEY_MAX];
  66
  67 int kbd_keyboard_startup (void)
  68 {
  69 //      set_keyboard_rate(2000, 2000);
  70         return 0;
  71 }
  72
  73 int kbd_keyboard_shutdown (void)
  74 {
  75         return 0;
  76 }
  77
  78 void kbd_poll_keyboard (void)
  79 {
  80         int i;
  81         poll_keyboard();
  82         for (i = 0; i < KEY_MAX; i++) {
  83           if (!key[i])
  84             continue;
  85           key[i] = 1;
  86           if (key[i] && old_key[i])
  87             key[i] |= 2;
  88         }
  89         memcpy(old_key, key, KEY_MAX);
  90
  91         kbd_F1_pressed = key[KEY_F1];
  92         kbd_F2_pressed = key[KEY_F2];
  93         kbd_F3_pressed = key[KEY_F3];
  94         kbd_F4_pressed = key[KEY_F4];
  95         kbd_F5_pressed = key[KEY_F5];
  96         kbd_F6_pressed = key[KEY_F6];
  97         kbd_F7_pressed = key[KEY_F7];
  98         kbd_F8_pressed = key[KEY_F8];
  99         kbd_F9_pressed = key[KEY_F9];
 100         kbd_F10_pressed = key[KEY_F10];
 101         kbd_F11_pressed = key[KEY_F11];
 102         kbd_F12_pressed = key[KEY_F12];
 103
 104         kbd_y_pressed = key[KEY_Y];
 105         kbd_n_pressed = key[KEY_N];
 106         kbd_zoom_pressed = key[KEY_Z];
 107
 108     kbd_fire_pressed = key[KEY_A];
 109         kbd_ecm_pressed = key[KEY_E];
 110     kbd_energy_bomb_pressed = key[KEY_TAB];
 111         kbd_hyperspace_pressed = key[KEY_H];
 112         kbd_ctrl_pressed = (key[KEY_LCONTROL]) || (key[KEY_RCONTROL]);
 113         kbd_jump_pressed = key[KEY_J];
 114         kbd_escape_pressed = key[KEY_ESC];
 115
 116     kbd_dock_pressed = key[KEY_C];
 117         kbd_d_pressed = key[KEY_D];
 118         kbd_origin_pressed = key[KEY_O];
 119         kbd_find_pressed = key[KEY_F];
 120
 121         kbd_i_pressed = key[KEY_I];
 122
 123         kbd_fire_missile_pressed = key[KEY_M];
 124         kbd_target_missile_pressed = key[KEY_T];
 125         kbd_unarm_missile_pressed = key[KEY_U];
 126
 127         kbd_pause_pressed = key[KEY_P];
 128         kbd_resume_pressed = key[KEY_R];
 129
 130         kbd_inc_speed_pressed = key[KEY_SPACE];
 131         kbd_dec_speed_pressed = key[KEY_SLASH];
 132
 133         kbd_up_pressed = key[KEY_S] || key[KEY_UP];
 134         kbd_down_pressed = key[KEY_X] || key[KEY_DOWN];
 135         kbd_left_pressed = key[KEY_COMMA] || key[KEY_LEFT];
 136         kbd_right_pressed = key[KEY_STOP] || key[KEY_RIGHT];
 137
 138         kbd_enter_pressed = key[KEY_ENTER];
 139         kbd_backspace_pressed = key[KEY_BACKSPACE];
 140         kbd_space_pressed = key[KEY_SPACE];
 141
 142         while (keypressed())
 143                 readkey();
 144 }
 145
 146
 147 int kbd_read_key (void)
 148 {
 149         int keynum;
 150         int keycode;
 151         int keyasc;
 152
 153         kbd_enter_pressed = 0;
 154         kbd_backspace_pressed = 0;
 155
 156         keynum = readkey();
 157         keycode = keynum >> 8;
 158         keyasc = keynum & 255;
 159
 160         if (keycode == KEY_ENTER)
 161         {
 162                 kbd_enter_pressed = 1;
 163                 return 0;
 164         }
 165
 166         if (keycode == KEY_BACKSPACE)
 167         {
 168                 kbd_backspace_pressed = 1;
 169                 return 0;
 170         }
 171
 172         return keyasc;
 173 }
 174
 175
 176 void kbd_clear_key_buffer (void)
 177 {
 178         while (keypressed())
 179                 readkey();
 180 }
 181