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diff --git a/apps/plugins/doom/m_random.h b/apps/plugins/doom/m_random.h
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+/* Emacs style mode select   -*- C++ -*-
+ *-----------------------------------------------------------------------------
+ *
+ *
+ *  PrBoom a Doom port merged with LxDoom and LSDLDoom
+ *  based on BOOM, a modified and improved DOOM engine
+ *  Copyright (C) 1999 by
+ *  id Software, Chi Hoang, Lee Killough, Jim Flynn, Rand Phares, Ty Halderman
+ *  Copyright (C) 1999-2000 by
+ *  Jess Haas, Nicolas Kalkhof, Colin Phipps, Florian Schulze
+ *
+ *  This program is free software; you can redistribute it and/or
+ *  modify it under the terms of the GNU General Public License
+ *  as published by the Free Software Foundation; either version 2
+ *  of the License, or (at your option) any later version.
+ *
+ *  This program is distributed in the hope that it will be useful,
+ *  but WITHOUT ANY WARRANTY; without even the implied warranty of
+ *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ *  GNU General Public License for more details.
+ *
+ *  You should have received a copy of the GNU General Public License
+ *  along with this program; if not, write to the Free Software
+ *  Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA
+ *  02111-1307, USA.
+ *
+ * DESCRIPTION:
+ *  Functions to return random numbers.
+ *
+ *-----------------------------------------------------------------------------*/
+
+
+#ifndef __M_RANDOM__
+#define __M_RANDOM__
+
+#include "doomtype.h"
+
+// killough 1/19/98: rewritten to use to use a better random number generator
+// in the new engine, although the old one is available for compatibility.
+
+// killough 2/16/98:
+//
+// Make every random number generator local to each control-equivalent block.
+// Critical for demo sync. Changing the order of this list breaks all previous
+// versions' demos. The random number generators are made local to reduce the
+// chances of sync problems. In Doom, if a single random number generator call
+// was off, it would mess up all random number generators. This reduces the
+// chances of it happening by making each RNG local to a control flow block.
+//
+// Notes to developers: if you want to reduce your demo sync hassles, follow
+// this rule: for each call to P_Random you add, add a new class to the enum
+// type below for each block of code which calls P_Random. If two calls to
+// P_Random are not in "control-equivalent blocks", i.e. there are any cases
+// where one is executed, and the other is not, put them in separate classes.
+//
+// Keep all current entries in this list the same, and in the order
+// indicated by the #'s, because they're critical for preserving demo
+// sync. Do not remove entries simply because they become unused later.
+
+typedef enum {
+   pr_skullfly,                // #1
+   pr_damage,                  // #2
+   pr_crush,                   // #3
+   pr_genlift,                 // #4
+   pr_killtics,                // #5
+   pr_damagemobj,              // #6
+   pr_painchance,              // #7
+   pr_lights,                  // #8
+   pr_explode,                 // #9
+   pr_respawn,                 // #10
+   pr_lastlook,                // #11
+   pr_spawnthing,              // #12
+   pr_spawnpuff,               // #13
+   pr_spawnblood,              // #14
+   pr_missile,                 // #15
+   pr_shadow,                  // #16
+   pr_plats,                   // #17
+   pr_punch,                   // #18
+   pr_punchangle,              // #19
+   pr_saw,                     // #20
+   pr_plasma,                  // #21
+   pr_gunshot,                 // #22
+   pr_misfire,                 // #23
+   pr_shotgun,                 // #24
+   pr_bfg,                     // #25
+   pr_slimehurt,               // #26
+   pr_dmspawn,                 // #27
+   pr_missrange,               // #28
+   pr_trywalk,                 // #29
+   pr_newchase,                // #30
+   pr_newchasedir,             // #31
+   pr_see,                     // #32
+   pr_facetarget,              // #33
+   pr_posattack,               // #34
+   pr_sposattack,              // #35
+   pr_cposattack,              // #36
+   pr_spidrefire,              // #37
+   pr_troopattack,             // #38
+   pr_sargattack,              // #39
+   pr_headattack,              // #40
+   pr_bruisattack,             // #41
+   pr_tracer,                  // #42
+   pr_skelfist,                // #43
+   pr_scream,                  // #44
+   pr_brainscream,             // #45
+   pr_cposrefire,              // #46
+   pr_brainexp,                // #47
+   pr_spawnfly,                // #48
+   pr_misc,                    // #49
+   pr_all_in_one,              // #50
+   /* CPhipps - new entries from MBF, mostly unused for now */
+   pr_opendoor,                // #51
+   pr_targetsearch,            // #52
+   pr_friends,                 // #53
+   pr_threshold,               // #54
+   pr_skiptarget,              // #55
+   pr_enemystrafe,             // #56
+   pr_avoidcrush,              // #57
+   pr_stayonlift,              // #58
+   pr_helpfriend,              // #59
+   pr_dropoff,                 // #60
+   pr_randomjump,              // #61
+   pr_defect,                  // #62  // Start new entries -- add new entries below
+
+   // End of new entries
+   NUMPRCLASS               // MUST be last item in list
+} pr_class_t;
+
+// The random number generator's state.
+typedef struct {
+   unsigned long seed[NUMPRCLASS];      // Each block's random seed
+   int rndindex, prndindex;             // For compatibility support
+} rng_t;
+
+extern rng_t rng;                      // The rng's state
+
+extern unsigned long rngseed;          // The starting seed (not part of state)
+
+// Returns a number from 0 to 255,
+#define M_Random() P_Random(pr_misc)
+
+// As M_Random, but used by the play simulation.
+int P_Random(pr_class_t);
+
+// Fix randoms for demos.
+void M_ClearRandom(void);
+
+#endif