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_fire_pressed;
  38 int kbd_ecm_pressed;
  39 int kbd_energy_bomb_pressed;
  40 int kbd_hyperspace_pressed;
  41 int kbd_ctrl_pressed;
  42 int kbd_jump_pressed;
  43 int kbd_escape_pressed;
  44 int kbd_dock_pressed;
  45 int kbd_d_pressed;
  46 int kbd_origin_pressed;
  47 int kbd_find_pressed;
  48 int kbd_fire_missile_pressed;
  49 int kbd_target_missile_pressed;
  50 int kbd_unarm_missile_pressed;
  51 int kbd_pause_pressed;
  52 int kbd_resume_pressed;
  53 int kbd_inc_speed_pressed;
  54 int kbd_dec_speed_pressed;
  55 int kbd_up_pressed;
  56 int kbd_down_pressed;
  57 int kbd_left_pressed;
  58 int kbd_right_pressed;
  59 int kbd_enter_pressed;
  60 int kbd_backspace_pressed;
  61 int kbd_space_pressed;
  62
  63
  64 int kbd_keyboard_startup (void)
  65 {
  66 //      set_keyboard_rate(2000, 2000);
  67         return 0;
  68 }
  69
  70 int kbd_keyboard_shutdown (void)
  71 {
  72         return 0;
  73 }
  74
  75 void kbd_poll_keyboard (void)
  76 {
  77         poll_keyboard();
  78
  79         kbd_F1_pressed = key[KEY_F1];
  80         kbd_F2_pressed = key[KEY_F2];
  81         kbd_F3_pressed = key[KEY_F3];
  82         kbd_F4_pressed = key[KEY_F4];
  83         kbd_F5_pressed = key[KEY_F5];
  84         kbd_F6_pressed = key[KEY_F6];
  85         kbd_F7_pressed = key[KEY_F7];
  86         kbd_F8_pressed = key[KEY_F8];
  87         kbd_F9_pressed = key[KEY_F9];
  88         kbd_F10_pressed = key[KEY_F10];
  89         kbd_F11_pressed = key[KEY_F11];
  90         kbd_F12_pressed = key[KEY_F12];
  91
  92         kbd_y_pressed = key[KEY_Y];
  93         kbd_n_pressed = key[KEY_N];
  94
  95     kbd_fire_pressed = key[KEY_A];
  96         kbd_ecm_pressed = key[KEY_E];
  97     kbd_energy_bomb_pressed = key[KEY_TAB];
  98         kbd_hyperspace_pressed = key[KEY_H];
  99         kbd_ctrl_pressed = (key[KEY_LCONTROL]) || (key[KEY_RCONTROL]);
 100         kbd_jump_pressed = key[KEY_J];
 101         kbd_escape_pressed = key[KEY_ESC];
 102
 103     kbd_dock_pressed = key[KEY_C];
 104         kbd_d_pressed = key[KEY_D];
 105         kbd_origin_pressed = key[KEY_O];
 106         kbd_find_pressed = key[KEY_F];
 107
 108         kbd_fire_missile_pressed = key[KEY_M];
 109         kbd_target_missile_pressed = key[KEY_T];
 110         kbd_unarm_missile_pressed = key[KEY_U];
 111
 112         kbd_pause_pressed = key[KEY_P];
 113         kbd_resume_pressed = key[KEY_R];
 114
 115         kbd_inc_speed_pressed = key[KEY_SPACE];
 116         kbd_dec_speed_pressed = key[KEY_SLASH];
 117
 118         kbd_up_pressed = key[KEY_S] || key[KEY_UP];
 119         kbd_down_pressed = key[KEY_X] || key[KEY_DOWN];
 120         kbd_left_pressed = key[KEY_COMMA] || key[KEY_LEFT];
 121         kbd_right_pressed = key[KEY_STOP] || key[KEY_RIGHT];
 122
 123         kbd_enter_pressed = key[KEY_ENTER];
 124         kbd_backspace_pressed = key[KEY_BACKSPACE];
 125         kbd_space_pressed = key[KEY_SPACE];
 126
 127         while (keypressed())
 128                 readkey();
 129 }
 130
 131
 132 int kbd_read_key (void)
 133 {
 134         int keynum;
 135         int keycode;
 136         int keyasc;
 137
 138         kbd_enter_pressed = 0;
 139         kbd_backspace_pressed = 0;
 140
 141         keynum = readkey();
 142         keycode = keynum >> 8;
 143         keyasc = keynum & 255;
 144
 145         if (keycode == KEY_ENTER)
 146         {
 147                 kbd_enter_pressed = 1;
 148                 return 0;
 149         }
 150
 151         if (keycode == KEY_BACKSPACE)
 152         {
 153                 kbd_backspace_pressed = 1;
 154                 return 0;
 155         }
 156
 157         return keyasc;
 158 }
 159
 160
 161 void kbd_clear_key_buffer (void)
 162 {
 163         while (keypressed())
 164                 readkey();
 165 }
 166