mdw@git.distorted.org.uk Git - newkind/blob - intro.c

   1 /*
   2  * Elite - The New Kind.
   3  *
   4  * Reverse engineered from the BBC disk version of Elite.
   5  * Additional material by C.J.Pinder.
   6  *
   7  * The original Elite code is (C) I.Bell & D.Braben 1984.
   8  * This version re-engineered in C by C.J.Pinder 1999-2001.
   9  *
  10  * email: <christian@newkind.co.uk>
  11  *
  12  *
  13  */
  14
  15  /*
  16   * intro.c
  17   *
  18   * Run the two intro screens.
  19   * First is a rolling Cobra MkIII.
  20   * Second is a parade of the various ships.
  21   *
  22   */
  23
  24
  25 #include <stdlib.h>
  26
  27 #include "config.h"
  28 #include "elite.h"
  29 #include "gfx.h"
  30 #include "keyboard.h"
  31 #include "vector.h"
  32 #include "shipdata.h"
  33 #include "shipface.h"
  34 #include "threed.h"
  35 #include "space.h"
  36 #include "stars.h"
  37
  38 static int ship_no;
  39 static int show_time;
  40 static int direction;
  41
  42
  43 static int min_dist[NO_OF_SHIPS+1] = {0, 200, 800, 200,   200, 200, 300, 384,   200,
  44                                                                   200, 200, 420, 900, 500, 800, 384, 384,
  45                                                               384, 384, 384, 200, 384, 384, 384,   0,
  46                                                                   384,   0, 384, 384, 700, 384,   0,   0,
  47                                                                   900};
  48
  49
  50 static Matrix intro_ship_matrix;
  51
  52 static int ship_bump;
  53
  54 void initialise_intro1 (void)
  55 {
  56         clear_universe();
  57         set_init_matrix (intro_ship_matrix);
  58         add_new_ship (SHIP_COBRA3, 0, 0, 4500, intro_ship_matrix, -127, -127);
  59 }
  60
  61
  62 void initialise_intro2 (void)
  63 {
  64         ship_no = 0;
  65         show_time = 0;
  66         direction = 100;
  67         ship_bump = +1;
  68
  69         clear_universe();
  70         create_new_stars();
  71         set_init_matrix (intro_ship_matrix);
  72         add_new_ship (1, 0, 0, 5000, intro_ship_matrix, -127, -127);
  73 }
  74
  75
  76
  77 void update_intro1 (void)
  78 {
  79         universe[0].location.z -= 100;
  80
  81         if (universe[0].location.z < 384)
  82                 universe[0].location.z = 384;
  83
  84         gfx_clear_display();
  85
  86         flight_roll = 1;
  87         update_universe();
  88
  89         gfx_draw_sprite(IMG_ELITE_TXT, -1, 10);
  90
  91         gfx_display_centre_text (310, "Original Game (C) I.Bell & D.Braben.", 120, GFX_COL_WHITE);
  92         gfx_display_centre_text (330, "Re-engineered by C.J.Pinder.", 120, GFX_COL_WHITE);
  93         gfx_display_centre_text (360, "Load New Commander (Y/N)?", 140, GFX_COL_GOLD);
  94 }
  95
  96 static void next_ship(int bump)
  97 {
  98   do
  99   {
 100     ship_no += bump;
 101     if (ship_no > NO_OF_SHIPS)
 102       ship_no = 1;
 103     if (ship_no < 1)
 104       ship_no = NO_OF_SHIPS;
 105   } while (min_dist[ship_no] == 0);
 106
 107   show_time = 0;
 108   direction = -100;
 109
 110   ship_count[universe[0].type] = 0;
 111   universe[0].type = 0;
 112
 113   add_new_ship (ship_no, 0, 0, 4500, intro_ship_matrix, -127,
 114                 -127);
 115   ship_bump = +1;
 116 }
 117
 118 void update_intro2 (void)
 119 {
 120         show_time++;
 121
 122         if (direction < 0) {
 123           if (kbd_left_pressed == 1) {
 124             ship_bump = -1;
 125             direction = -direction;
 126           } else if (kbd_right_pressed == 1) {
 127             ship_bump = +1;
 128             direction = -direction;
 129           } else if (show_time >= 140)
 130             direction = -direction;
 131         }
 132
 133         universe[0].location.z += direction;
 134
 135         if (universe[0].location.z < min_dist[ship_no])
 136                 universe[0].location.z = min_dist[ship_no];
 137
 138         if (universe[0].location.z > 4500)
 139           next_ship(ship_bump);
 140
 141
 142         gfx_clear_display();
 143         update_starfield();
 144         update_universe();
 145
 146         gfx_draw_sprite (IMG_ELITE_TXT, -1, 10);
 147
 148         gfx_display_centre_text (360, "Press Fire or Space, Commander.", 140, GFX_COL_GOLD);
 149         gfx_display_centre_text (330, ship_list[ship_no]->name, 120, GFX_COL_WHITE);
 150 }
 151