added random number natives

--HG--
extra : convert_revision : svn%3A39bc706e-5318-0410-9160-8a85361fbb7c/trunk%40536

core/msvc8/sourcemod_mm.vcproj

@@ -665,6 +665,10 @@
 				RelativePath="..\smn_float.cpp"
 				>
 			</File>
+			<File
+				RelativePath="..\smn_halflife.cpp"
+				>
+			</File>
 			<File
 				RelativePath="..\smn_handles.cpp"
 				>

core/smn_halflife.cpp

@@ -0,0 +1,45 @@
+/**
+ * ===============================================================
+ * SourceMod (C)2004-2007 AlliedModders LLC.  All rights reserved.
+ * ===============================================================
+ *
+ * This file is not open source and may not be copied without explicit
+ * written permission of AlliedModders LLC.  This file may not be redistributed 
+ * in whole or significant part.
+ * For information, see LICENSE.txt or http://www.sourcemod.net/license.php
+ *
+ * Version: $Id$
+ */
+
+#include "sm_globals.h"
+#include "sourcemm_api.h"
+
+static cell_t SetRandomSeed(IPluginContext *pContext, const cell_t *params)
+{
+	engrandom->SetSeed(params[1]);
+
+	return 1;
+}
+
+static cell_t GetRandomFloat(IPluginContext *pContext, const cell_t *params)
+{
+	float fMin = sp_ctof(params[1]);
+	float fMax = sp_ctof(params[2]);
+
+	float fRandom = engrandom->RandomFloat(fMin, fMax);
+
+	return sp_ftoc(fRandom);
+}
+
+static cell_t GetRandomInt(IPluginContext *pContext, const cell_t *params)
+{
+	return engrandom->RandomInt(params[1], params[2]);
+}
+
+REGISTER_NATIVES(halflifeNatives)
+{
+	{"SetRandomSeed",			SetRandomSeed},
+	{"GetRandomFloat",			GetRandomFloat},
+	{"GetRandomInt",			GetRandomInt},
+	{NULL,						NULL},
+};

core/sourcemm_api.cpp

@@ -24,6 +24,7 @@ ISmmPluginManager *g_pMMPlugins = NULL;
 CGlobalVars *gpGlobals = NULL;
 ICvar *icvar = NULL;
 IGameEventManager2 *gameevents = NULL;
+IUniformRandomStream *engrandom = NULL;
 CallClass<IVEngineServer> *enginePatch = NULL;
 
 PLUGIN_EXPOSE(SourceMod, g_SourceMod_Core);
@@ -37,6 +38,7 @@ bool SourceMod_Core::Load(PluginId id, ISmmAPI *ismm, char *error, size_t maxlen
 	GET_V_IFACE_CURRENT(serverFactory, serverClients, IServerGameClients, INTERFACEVERSION_SERVERGAMECLIENTS);
 	GET_V_IFACE_CURRENT(engineFactory, icvar, ICvar, VENGINE_CVAR_INTERFACE_VERSION);
 	GET_V_IFACE_CURRENT(engineFactory, gameevents, IGameEventManager2, INTERFACEVERSION_GAMEEVENTSMANAGER2);
+	GET_V_IFACE_CURRENT(engineFactory, engrandom, IUniformRandomStream, VENGINE_SERVER_RANDOM_INTERFACE_VERSION);
 
 	if ((g_pMMPlugins = (ISmmPluginManager *)g_SMAPI->MetaFactory(MMIFACE_PLMANAGER, NULL, NULL)) == NULL)
 	{

core/sourcemm_api.h

@@ -19,6 +19,7 @@
 #include <eiface.h>
 #include <icvar.h>
 #include <igameevents.h>
+#include <random.h>
 
 /**
  * @file Contains wrappers around required Metamod:Source API exports
@@ -52,6 +53,7 @@ extern ISmmPluginManager *g_pMMPlugins;
 extern CGlobalVars *gpGlobals;
 extern IGameEventManager2 *gameevents;
 extern SourceHook::CallClass<IVEngineServer> *enginePatch;
+extern IUniformRandomStream *engrandom;
 
 #define ENGINE_CALL(func)		SH_CALL(enginePatch, &IVEngineServer::func)
 

plugins/include/sourcemod.inc

@@ -340,5 +340,32 @@ native LogMessage(const String:format[], {Handle,Float,String,_}:...);
  */
 native LogError(const String:format[], {Handle,Float,String,_}:...);
 
+/**
+ * Sets the seed value for the global Half-Life 2 Random Stream
+ *
+ * @param seed			Seed value.
+ * @noreturn	
+ */
+native SetRandomSeed(seed);
+
+/**
+ * Returns a random floating point number from the Half-Life 2 Random Stream
+ *
+ * @param fMin			Minimum random bound.
+ * @param fMax			Maximum random bound.
+ * @return				A random number between (inclusive) fMin and fMax.
+ */
+native Float:GetRandomFloat(Float:fMin=0.0, Float:fMax=1.0);
+
+/**
+ * Returns a random number from the Half-Life 2 Random Stream
+ *
+ * @param nmin			Minimum random bound.
+ * @param nmax			Maximum random bound.
+ * @return				A random number between (inclusive) nmin and nmax.
+ */
+native GetRandomInt(nmin, nmax);
+
+
 #include <usermessages>
 #include <helpers>