Index: src/newgrf.cpp
===================================================================
--- src/newgrf.cpp	(Revision 24958)
+++ src/newgrf.cpp	(Arbeitskopie)
@@ -48,6 +48,7 @@
 #include "vehicle_func.h"
 #include "language.h"
 #include "vehicle_base.h"
+#include "core/random_func.hpp"
 
 #include "table/strings.h"
 #include "table/build_industry.h"
@@ -70,6 +71,9 @@
 /** 32 * 8 = 256 flags. Apparently TTDPatch uses this many.. */
 static uint32 _ttdpatch_flags[8];
 
+/** Randomizer for GRF-local random bits */
+static Randomizer _grf_randomizer;
+
 /** Indicates which are the newgrf features currently loaded ingame */
 GRFLoadedFeatures _loaded_newgrf_features;
 
@@ -5737,6 +5741,14 @@
 			*value = _cur_year;
 			return true;
 
+		case 0x26: // global random bits
+			*value = _settings_game.game_creation.generation_seed;
+			return true;
+
+		case 0x27: // local random bits
+			*value = grffile->random_bits;
+			return true;
+
 		default: return false;
 	}
 }
@@ -7883,6 +7895,12 @@
 	}
 }
 
+/** Reset the randomizer */
+static void ResetRandomizer()
+{
+	_grf_randomizer.SetSeed(_settings_game.game_creation.generation_seed);
+}
+
 /** Reset and clear all NewGRFs */
 static void ResetNewGRF()
 {
@@ -7975,6 +7993,9 @@
 	/* Reset the snowline table. */
 	ClearSnowLine();
 
+	/* Reset the randomizer */
+	ResetRandomizer();
+
 	/* Reset NewGRF files */
 	ResetNewGRF();
 
@@ -8083,6 +8104,9 @@
 	 * 'Uninitialised' parameters are zeroed as that is their default value when dynamically creating them. */
 	assert_compile(lengthof(this->param) == lengthof(config->param) && lengthof(this->param) == 0x80);
 
+	/* Set the random bits */
+	this->random_bits = _grf_randomizer.Next();
+
 	assert(config->num_params <= lengthof(config->param));
 	this->param_end = config->num_params;
 	if (this->param_end > 0) {
Index: src/newgrf.h
===================================================================
--- src/newgrf.h	(Revision 24958)
+++ src/newgrf.h	(Arbeitskopie)
@@ -137,6 +137,7 @@
 
 	uint32 grf_features;                     ///< Bitset of GrfSpecFeature the grf uses
 	PriceMultipliers price_base_multipliers; ///< Price base multipliers as set by the grf.
+	uint32 random_bits;                      ///< Local random bits of this grf
 
 	GRFFile(const struct GRFConfig *config);
 	~GRFFile();