From 852259b33141281693efa8ccfec4d62affdaab82 Mon Sep 17 00:00:00 2001
From: Renaud G <renaud@rolisteam.org>
Date: Sun, 23 Oct 2016 23:30:54 +0200
Subject: -optimizing the random generation.

---
 die.cpp | 12 ++++++------
 die.h   |  2 ++
 2 files changed, 8 insertions(+), 6 deletions(-)

diff --git a/die.cpp b/die.cpp
index 4dd61de..e423268 100644
--- a/die.cpp
+++ b/die.cpp
@@ -29,11 +29,12 @@
 Die::Die()
     : m_hasValue(false),m_displayStatus(false),m_highlighted(true),m_base(1),m_color("")//,m_mt(m_randomDevice)
 {
-    uint seed = quintptr(this) + QDateTime::currentDateTime().toMSecsSinceEpoch();
-
-    qsrand(seed);
+//    uint seed = quintptr(this) + QDateTime::currentDateTime().toMSecsSinceEpoch();
 
+  //  qsrand(seed);
 
+    auto seed = std::chrono::high_resolution_clock::now().time_since_epoch().count();
+    m_rng = std::mt19937(quintptr(this)+seed);
 
 }
 Die::Die(const Die& die)
@@ -103,10 +104,9 @@ void Die::roll(bool adding)
     if(m_faces!=0)
     {
         //quint64 value=(qrand()%m_faces)+m_base;
-        auto seed = std::chrono::high_resolution_clock::now().time_since_epoch().count();
-        std::mt19937 rng(quintptr(this)+seed);
+
         std::uniform_int_distribution<qint64> dist(m_base,m_faces);
-        qint64 value = dist(rng);
+        qint64 value = dist(m_rng);
         if((adding)||(m_rollResult.isEmpty()))
         {
             insertRollValue(value);
diff --git a/die.h b/die.h
index e29f10d..6f3af8c 100644
--- a/die.h
+++ b/die.h
@@ -138,6 +138,8 @@ private:
     quint64 m_faces;
     qint64 m_base;
     QString m_color;
+
+    std::mt19937 m_rng;
 };
 
 
-- 
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