From 6d8d7cd768f292a7fbbcecaf5f1cbc3090973f12 Mon Sep 17 00:00:00 2001
From: Benoit Bolsee <benoit.bolsee@online.be>
Date: Sat, 23 May 2009 14:40:36 +0000
Subject: [PATCH] BGE: Random sensor will produce true random sequence of
 events when seed is set to 0 in the GUI (the actual seed value is stored in
 the sensor seed attribute). Positive values will use fixed pseudo random
 sequence.

---
 source/gameengine/Converter/KX_ConvertSensors.cpp | 5 +++++
 source/gameengine/Ketsji/KX_KetsjiEngine.cpp      | 5 +++++
 source/gameengine/Ketsji/KX_KetsjiEngine.h        | 1 +
 3 files changed, 11 insertions(+)

diff --git a/source/gameengine/Converter/KX_ConvertSensors.cpp b/source/gameengine/Converter/KX_ConvertSensors.cpp
index 07b0abae6df..37631a0523d 100644
--- a/source/gameengine/Converter/KX_ConvertSensors.cpp
+++ b/source/gameengine/Converter/KX_ConvertSensors.cpp
@@ -682,6 +682,11 @@ void BL_ConvertSensors(struct Object* blenderobject,
 					if (eventmgr)
 					{
 						int randomSeed = blenderrndsensor->seed;
+						if (randomSeed == 0)
+						{
+							randomSeed = (int)(kxengine->GetRealTime()*100000.0);
+							randomSeed ^= (intptr_t)blenderrndsensor;
+						}
 						gamesensor = new SCA_RandomSensor(eventmgr, gameobj, randomSeed);
 					}
 				}
diff --git a/source/gameengine/Ketsji/KX_KetsjiEngine.cpp b/source/gameengine/Ketsji/KX_KetsjiEngine.cpp
index 983059d0c70..347634b4599 100644
--- a/source/gameengine/Ketsji/KX_KetsjiEngine.cpp
+++ b/source/gameengine/Ketsji/KX_KetsjiEngine.cpp
@@ -1770,6 +1770,11 @@ double KX_KetsjiEngine::GetClockTime(void) const
 	return m_clockTime;
 }
 
+double KX_KetsjiEngine::GetRealTime(void) const
+{
+	return m_kxsystem->GetTimeInSeconds();
+}
+
 void KX_KetsjiEngine::SetAnimFrameRate(double framerate)
 {
 	m_anim_framerate = framerate;
diff --git a/source/gameengine/Ketsji/KX_KetsjiEngine.h b/source/gameengine/Ketsji/KX_KetsjiEngine.h
index 5c14c63dd04..6fa379e551a 100644
--- a/source/gameengine/Ketsji/KX_KetsjiEngine.h
+++ b/source/gameengine/Ketsji/KX_KetsjiEngine.h
@@ -271,6 +271,7 @@ public:
 	 */
 	double GetClockTime(void) const;
 
+	double GetRealTime(void) const;
 	/**
 	 * Returns the difference between the local time of the scene (when it
 	 * was running and not suspended) and the "curtime"