Move m_random.[ch] to doom/ (as Hexen uses a different random number

table). Split RNG code out of heretic/m_misc.c to a separate m_random.c.

Subversion-branch: /branches/raven-branch
Subversion-revision: 1256

3 files changed, 134 insertions, 0 deletions

diff --git a/src/doom/Makefile.am b/src/doom/Makefile.am
index 44162e48..5982721f 100644
--- a/src/doom/Makefile.am
+++ b/src/doom/Makefile.am
@@ -23,6 +23,7 @@ hu_lib.c           hu_lib.h     \
 hu_stuff.c         hu_stuff.h   \
 info.c             info.h       \
 m_menu.c           m_menu.h     \
+m_random.c         m_random.h   \
 p_ceilng.c                      \
 p_doors.c                       \
 p_enemy.c                       \
diff --git a/src/doom/m_random.c b/src/doom/m_random.c
new file mode 100644
index 00000000..31cdf1b2
--- /dev/null
+++ b/src/doom/m_random.c
@@ -0,0 +1,86 @@
+// Emacs style mode select   -*- C++ -*- 
+//-----------------------------------------------------------------------------
+//
+// Copyright(C) 1993-1996 Id Software, Inc.
+// Copyright(C) 2005 Simon Howard
+//
+// 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:
+//	Random number LUT.
+//
+//-----------------------------------------------------------------------------
+
+
+#include <time.h>
+
+#include "m_random.h"
+
+//
+// M_Random
+// Returns a 0-255 number
+//
+
+static const unsigned char rndtable[256] = {
+    0,   8, 109, 220, 222, 241, 149, 107,  75, 248, 254, 140,  16,  66 ,
+    74,  21, 211,  47,  80, 242, 154,  27, 205, 128, 161,  89,  77,  36 ,
+    95, 110,  85,  48, 212, 140, 211, 249,  22,  79, 200,  50,  28, 188 ,
+    52, 140, 202, 120,  68, 145,  62,  70, 184, 190,  91, 197, 152, 224 ,
+    149, 104,  25, 178, 252, 182, 202, 182, 141, 197,   4,  81, 181, 242 ,
+    145,  42,  39, 227, 156, 198, 225, 193, 219,  93, 122, 175, 249,   0 ,
+    175, 143,  70, 239,  46, 246, 163,  53, 163, 109, 168, 135,   2, 235 ,
+    25,  92,  20, 145, 138,  77,  69, 166,  78, 176, 173, 212, 166, 113 ,
+    94, 161,  41,  50, 239,  49, 111, 164,  70,  60,   2,  37, 171,  75 ,
+    136, 156,  11,  56,  42, 146, 138, 229,  73, 146,  77,  61,  98, 196 ,
+    135, 106,  63, 197, 195,  86,  96, 203, 113, 101, 170, 247, 181, 113 ,
+    80, 250, 108,   7, 255, 237, 129, 226,  79, 107, 112, 166, 103, 241 ,
+    24, 223, 239, 120, 198,  58,  60,  82, 128,   3, 184,  66, 143, 224 ,
+    145, 224,  81, 206, 163,  45,  63,  90, 168, 114,  59,  33, 159,  95 ,
+    28, 139, 123,  98, 125, 196,  15,  70, 194, 253,  54,  14, 109, 226 ,
+    71,  17, 161,  93, 186,  87, 244, 138,  20,  52, 123, 251,  26,  36 ,
+    17,  46,  52, 231, 232,  76,  31, 221,  84,  37, 216, 165, 212, 106 ,
+    197, 242,  98,  43,  39, 175, 254, 145, 190,  84, 118, 222, 187, 136 ,
+    120, 163, 236, 249
+};
+
+int	rndindex = 0;
+int	prndindex = 0;
+
+// Which one is deterministic?
+int P_Random (void)
+{
+    prndindex = (prndindex+1)&0xff;
+    return rndtable[prndindex];
+}
+
+int M_Random (void)
+{
+    rndindex = (rndindex+1)&0xff;
+    return rndtable[rndindex];
+}
+
+void M_ClearRandom (void)
+{
+    prndindex = 0;
+
+    // Seed the M_Random counter from the system time
+
+    rndindex = time(NULL) & 0xff;
+}
+
+
+
+
diff --git a/src/doom/m_random.h b/src/doom/m_random.h
new file mode 100644
index 00000000..be778362
--- /dev/null
+++ b/src/doom/m_random.h
@@ -0,0 +1,47 @@
+// Emacs style mode select   -*- C++ -*- 
+//-----------------------------------------------------------------------------
+//
+// Copyright(C) 1993-1996 Id Software, Inc.
+// Copyright(C) 2005 Simon Howard
+//
+// 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:
+//
+//    
+//-----------------------------------------------------------------------------
+
+
+#ifndef __M_RANDOM__
+#define __M_RANDOM__
+
+
+#include "doomtype.h"
+
+
+
+// Returns a number from 0 to 255,
+// from a lookup table.
+int M_Random (void);
+
+// As M_Random, but used only by the play simulation.
+int P_Random (void);
+
+// Fix randoms for demos.
+void M_ClearRandom (void);
+
+
+#endif