main/mglobal.c

   1 /* $Id: mglobal.c,v 1.5 2004-08-28 23:17:45 schaffner Exp $ */
   2 /*
   3 THE COMPUTER CODE CONTAINED HEREIN IS THE SOLE PROPERTY OF PARALLAX
   4 SOFTWARE CORPORATION ("PARALLAX").  PARALLAX, IN DISTRIBUTING THE CODE TO
   5 END-USERS, AND SUBJECT TO ALL OF THE TERMS AND CONDITIONS HEREIN, GRANTS A
   6 ROYALTY-FREE, PERPETUAL LICENSE TO SUCH END-USERS FOR USE BY SUCH END-USERS
   7 IN USING, DISPLAYING,  AND CREATING DERIVATIVE WORKS THEREOF, SO LONG AS
   8 SUCH USE, DISPLAY OR CREATION IS FOR NON-COMMERCIAL, ROYALTY OR REVENUE
   9 FREE PURPOSES.  IN NO EVENT SHALL THE END-USER USE THE COMPUTER CODE
  10 CONTAINED HEREIN FOR REVENUE-BEARING PURPOSES.  THE END-USER UNDERSTANDS
  11 AND AGREES TO THE TERMS HEREIN AND ACCEPTS THE SAME BY USE OF THIS FILE.
  12 COPYRIGHT 1993-1999 PARALLAX SOFTWARE CORPORATION.  ALL RIGHTS RESERVED.
  13 */
  14
  15 /*
  16  *
  17  * Global variables for main directory
  18  *
  19  */
  20
  21 #ifdef HAVE_CONFIG_H
  22 #include <conf.h>
  23 #endif
  24
  25 #ifdef RCS
  26 static char rcsid[] = "$Id: mglobal.c,v 1.5 2004-08-28 23:17:45 schaffner Exp $";
  27 #endif
  28
  29 #include "fix.h"
  30 #include "vecmat.h"
  31 #include "inferno.h"
  32 #include "segment.h"
  33 #include "object.h"
  34 #include "bm.h"
  35 #include "3d.h"
  36 #include "game.h"
  37
  38
  39 // Global array of vertices, common to one mine.
  40 vms_vector Vertices[MAX_VERTICES];
  41 g3s_point Segment_points[MAX_VERTICES];
  42
  43 fix FrameTime = 0x1000; // Time since last frame, in seconds
  44 fix GameTime = 0;                       //      Time in game, in seconds
  45
  46 //How many frames we've rendered
  47 int FrameCount = 0;
  48
  49 //      This is the global mine which create_new_mine returns.
  50 segment Segments[MAX_SEGMENTS];
  51 segment2        Segment2s[MAX_SEGMENTS];
  52 //lsegment      Lsegments[MAX_SEGMENTS];
  53
  54 // Number of vertices in current mine (ie, Vertices, pointed to by Vp)
  55 int             Num_vertices = 0;
  56 int             Num_segments = 0;
  57
  58 int             Highest_vertex_index=0;
  59 int             Highest_segment_index=0;
  60
  61 //      Translate table to get opposite side of a face on a segment.
  62 char    Side_opposite[MAX_SIDES_PER_SEGMENT] = {WRIGHT, WBOTTOM, WLEFT, WTOP, WFRONT, WBACK};
  63
  64 #define TOLOWER(c) ((((c)>='A') && ((c)<='Z'))?((c)+('a'-'A')):(c))
  65
  66 #ifdef PASSWORD
  67 #define encrypt(a,b,c,d)        a ^ TOLOWER((((int) PASSWORD)>>24)&255), \
  68                                                                         b ^ TOLOWER((((int) PASSWORD)>>16)&255), \
  69                                                                         c ^ TOLOWER((((int) PASSWORD)>>8)&255), \
  70                                                                         d ^ TOLOWER((((int) PASSWORD))&255)
  71 #else
  72 #define encrypt(a,b,c,d) a,b,c,d
  73 #endif
  74
  75 sbyte Side_to_verts[MAX_SIDES_PER_SEGMENT][4] = {
  76                         { encrypt(7,6,2,3) },                   // left
  77                         { encrypt(0,4,7,3) },                   // top
  78                         { encrypt(0,1,5,4) },                   // right
  79                         { encrypt(2,6,5,1) },                   // bottom
  80                         { encrypt(4,5,6,7) },                   // back
  81                         { encrypt(3,2,1,0) },                   // front
  82 };
  83
  84 //      Note, this MUST be the same as Side_to_verts, it is an int for speed reasons.
  85 int Side_to_verts_int[MAX_SIDES_PER_SEGMENT][4] = {
  86                         { encrypt(7,6,2,3) },                   // left
  87                         { encrypt(0,4,7,3) },                   // top
  88                         { encrypt(0,1,5,4) },                   // right
  89                         { encrypt(2,6,5,1) },                   // bottom
  90                         { encrypt(4,5,6,7) },                   // back
  91                         { encrypt(3,2,1,0) },                   // front
  92 };
  93
  94 // Texture map stuff
  95
  96 int NumTextures = 0;
  97 bitmap_index Textures[MAX_TEXTURES];            // All textures.
  98
  99 fix     Next_laser_fire_time;                   //      Time at which player can next fire his selected laser.
 100 fix     Next_missile_fire_time;                 //      Time at which player can next fire his selected missile.
 101 //--unused-- fix        Laser_delay_time = F1_0/6;              //      Delay between laser fires.
 102
 103 #if defined(MACINTOSH) && defined(APPLE_DEMO)
 104 #define DEFAULT_DIFFICULTY              0               // trainee for apple demo
 105 #else
 106 #define DEFAULT_DIFFICULTY              1
 107 #endif
 108
 109 int     Difficulty_level=DEFAULT_DIFFICULTY;    //      Difficulty level in 0..NDL-1, 0 = easiest, NDL-1 = hardest
 110 int     Detail_level=NUM_DETAIL_LEVELS-2;               //      Detail level in 0..NUM_DETAIL_LEVELS-1, 0 = boringest, NUM_DETAIL_LEVELS = coolest
 111