Add missing files

VirtualRobot/Random.cpp

+
+#include "Random.h"
+
+namespace VirtualRobot
+{
+    std::mt19937_64 &PRNG64Bit()
+    {
+        static thread_local std::mt19937_64 gen{std::random_device{}()};
+        return gen;
+    }
+} // namespace
+

VirtualRobot/Random.h

+/**
+* This file is part of Simox.
+*
+* Simox is free software; you can redistribute it and/or modify
+* it under the terms of the GNU Lesser General Public License as
+* published by the Free Software Foundation; either version 2 of
+* the License, or (at your option) any later version.
+*
+* Simox is distributed in the hope that it will be useful, but
+* WITHOUT ANY WARRANTY; without even the implied warranty of
+* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+* GNU Lesser General Public License for more details.
+*
+* You should have received a copy of the GNU Lesser General Public License
+* along with this program. If not, see <http://www.gnu.org/licenses/>.
+*
+* @package    VirtualRobot
+* @author     Raphael Grimm
+* @copyright  2018 Nikolaus Vahrenkamp
+*             GNU Lesser General Public License
+*
+*/
+#pragma once
+
+#include <random>
+
+namespace VirtualRobot
+{
+    std::mt19937_64& PRNG64Bit();
+
+    inline typename std::mt19937_64::result_type RandomNumber()
+    {
+        return PRNG64Bit()();
+    }
+    inline float RandomFloat()
+    {
+        static thread_local std::uniform_real_distribution<float> d{0.f, std::nextafter(1.f, 2.f)};
+        return d(PRNG64Bit());
+    }
+    inline float RandomFloat(float min, float max)
+    {
+        return std::uniform_real_distribution<float>{min, max}(PRNG64Bit());
+    }
+}
+