From f9709a6f50044683e6c165ca9104c5e68a9bd905 Mon Sep 17 00:00:00 2001
From: peter1138 <peter1138@openttd.org>
Date: Thu, 25 Feb 2010 09:43:00 +0000
Subject: (svn r19235) -Add: [NewGRF] Add 2 bits of pseudo-random data for rail
 types, based on tile location.

---
 src/newgrf_railtype.cpp | 5 ++++-
 1 file changed, 4 insertions(+), 1 deletion(-)

(limited to 'src')

diff --git a/src/newgrf_railtype.cpp b/src/newgrf_railtype.cpp
index b76eb2aef..931f544e9 100644
--- a/src/newgrf_railtype.cpp
+++ b/src/newgrf_railtype.cpp
@@ -14,10 +14,13 @@
 #include "newgrf_commons.h"
 #include "newgrf_railtype.h"
 #include "newgrf_spritegroup.h"
+#include "core/bitmath_func.hpp"
 
 static uint32 RailTypeGetRandomBits(const ResolverObject *object)
 {
-	return 0;
+	TileIndex tile = object->u.routes.tile;
+	uint tmp = CountBits(tile + (TileX(tile) + TileY(tile)) * TILE_SIZE);
+	return GB(tmp, 0, 2);
 }
 
 static uint32 RailTypeGetTriggers(const ResolverObject *object)
-- 
cgit v1.2.3-54-g00ecf