main/mglobal.c

   1 /*
   2 THE COMPUTER CODE CONTAINED HEREIN IS THE SOLE PROPERTY OF PARALLAX
   3 SOFTWARE CORPORATION ("PARALLAX").  PARALLAX, IN DISTRIBUTING THE CODE TO
   4 END-USERS, AND SUBJECT TO ALL OF THE TERMS AND CONDITIONS HEREIN, GRANTS A
   5 ROYALTY-FREE, PERPETUAL LICENSE TO SUCH END-USERS FOR USE BY SUCH END-USERS
   6 IN USING, DISPLAYING,  AND CREATING DERIVATIVE WORKS THEREOF, SO LONG AS
   7 SUCH USE, DISPLAY OR CREATION IS FOR NON-COMMERCIAL, ROYALTY OR REVENUE
   8 FREE PURPOSES.  IN NO EVENT SHALL THE END-USER USE THE COMPUTER CODE
   9 CONTAINED HEREIN FOR REVENUE-BEARING PURPOSES.  THE END-USER UNDERSTANDS
  10 AND AGREES TO THE TERMS HEREIN AND ACCEPTS THE SAME BY USE OF THIS FILE.
  11 COPYRIGHT 1993-1999 PARALLAX SOFTWARE CORPORATION.  ALL RIGHTS RESERVED.
  12 */
  13
  14 #ifdef HAVE_CONFIG_H
  15 #include <conf.h>
  16 #endif
  17
  18 #ifdef RCS
  19 static char rcsid[] = "$Id: mglobal.c,v 1.2 2001-01-31 15:17:54 bradleyb Exp $";
  20 #endif
  21
  22 #include "fix.h"
  23 #include "vecmat.h"
  24 #include "inferno.h"
  25 #include "segment.h"
  26 #include "object.h"
  27 #include "bm.h"
  28 #include "3d.h"
  29 #include "game.h"
  30
  31
  32 // Global array of vertices, common to one mine.
  33 vms_vector Vertices[MAX_VERTICES];
  34 g3s_point Segment_points[MAX_VERTICES];
  35
  36 fix FrameTime = 0x1000; // Time since last frame, in seconds
  37 fix GameTime = 0;                       //      Time in game, in seconds
  38
  39 //How many frames we've rendered
  40 int FrameCount = 0;
  41
  42 //      This is the global mine which create_new_mine returns.
  43 segment Segments[MAX_SEGMENTS];
  44 segment2        Segment2s[MAX_SEGMENTS];
  45 //lsegment      Lsegments[MAX_SEGMENTS];
  46
  47 // Number of vertices in current mine (ie, Vertices, pointed to by Vp)
  48 int             Num_vertices = 0;
  49 int             Num_segments = 0;
  50
  51 int             Highest_vertex_index=0;
  52 int             Highest_segment_index=0;
  53
  54 //      Translate table to get opposite side of a face on a segment.
  55 char    Side_opposite[MAX_SIDES_PER_SEGMENT] = {WRIGHT, WBOTTOM, WLEFT, WTOP, WFRONT, WBACK};
  56
  57 #define TOLOWER(c) ((((c)>='A') && ((c)<='Z'))?((c)+('a'-'A')):(c))
  58
  59 #ifdef PASSWORD
  60 #define encrypt(a,b,c,d)        a ^ TOLOWER((((int) PASSWORD)>>24)&255), \
  61                                                                         b ^ TOLOWER((((int) PASSWORD)>>16)&255), \
  62                                                                         c ^ TOLOWER((((int) PASSWORD)>>8)&255), \
  63                                                                         d ^ TOLOWER((((int) PASSWORD))&255)
  64 #else
  65 #define encrypt(a,b,c,d) a,b,c,d
  66 #endif
  67
  68 byte Side_to_verts[MAX_SIDES_PER_SEGMENT][4] = {
  69                         { encrypt(7,6,2,3) },                   // left
  70                         { encrypt(0,4,7,3) },                   // top
  71                         { encrypt(0,1,5,4) },                   // right
  72                         { encrypt(2,6,5,1) },                   // bottom
  73                         { encrypt(4,5,6,7) },                   // back
  74                         { encrypt(3,2,1,0) },                   // front
  75 };
  76
  77 //      Note, this MUST be the same as Side_to_verts, it is an int for speed reasons.
  78 int Side_to_verts_int[MAX_SIDES_PER_SEGMENT][4] = {
  79                         { encrypt(7,6,2,3) },                   // left
  80                         { encrypt(0,4,7,3) },                   // top
  81                         { encrypt(0,1,5,4) },                   // right
  82                         { encrypt(2,6,5,1) },                   // bottom
  83                         { encrypt(4,5,6,7) },                   // back
  84                         { encrypt(3,2,1,0) },                   // front
  85 };
  86
  87 // Texture map stuff
  88
  89 int NumTextures = 0;
  90 bitmap_index Textures[MAX_TEXTURES];            // All textures.
  91
  92 fix     Next_laser_fire_time;                   //      Time at which player can next fire his selected laser.
  93 fix     Next_missile_fire_time;                 //      Time at which player can next fire his selected missile.
  94 //--unused-- fix        Laser_delay_time = F1_0/6;              //      Delay between laser fires.
  95
  96 #if defined(MACINTOSH) && defined(APPLE_DEMO)
  97 #define DEFAULT_DIFFICULTY              0               // trainee for apple demo
  98 #else
  99 #define DEFAULT_DIFFICULTY              1
 100 #endif
 101
 102 int     Difficulty_level=DEFAULT_DIFFICULTY;    //      Difficulty level in 0..NDL-1, 0 = easiest, NDL-1 = hardest
 103 int     Detail_level=NUM_DETAIL_LEVELS-2;               //      Detail level in 0..NUM_DETAIL_LEVELS-1, 0 = boringest, NUM_DETAIL_LEVELS = coolest
 104