ref: 4f040459ebe4824c0bedc504b6ae1115fdaa3986
parent: 3a1bc4269d681e7d5a574e171c8cb9ab8ff2087a
author: Jonathan Dowland <jon+github@alcopop.org>
date: Fri Feb 12 14:20:19 EST 2016
Revert "Seed the M_Random random number generator from the system time to give" This reverts commit 59aad53bbde97e75e06717ea1b49bd3c92941b83. Closes #665. The original commit enhanced the behaviour of Doom to make some of the pseudo-random behaviour less predictable. Whilst this is a nice feature, it's a feature that vanilla lacks: replaying a demo would result in those behaviours (wipe, pitched sound effects) being identical each time. This is not the case with the above feature. It could actually be quite useful to ensure that such behaviours are reproducible to fine-tune our emulation of e.g. Doom/Heretic/Hexen pitch shifting. Perhaps in the future our testing will be enhanced to compare multimedia output of Vanilla versus chocolate for demo playback, in which case we would also need to have reproducibility here.
--- a/src/doom/m_random.c
+++ b/src/doom/m_random.c
@@ -16,11 +16,6 @@
// Random number LUT.
//
-
-#include <time.h>
-
-#include "m_random.h"
-
//
// M_Random
// Returns a 0-255 number
@@ -66,13 +61,5 @@
void M_ClearRandom (void)
{- prndindex = 0;
-
- // Seed the M_Random counter from the system time
-
- rndindex = time(NULL) & 0xff;
+ rndindex = prndindex = 0;
}
-
-
-
-