From 90f3ff2da4b37a6766e0eb369150d866ec488d06 Mon Sep 17 00:00:00 2001
From: Capostrophic <Capostrophic@users.noreply.github.com>
Date: Thu, 12 Apr 2018 18:18:17 +0300
Subject: [PATCH 1/3] Don't force DDS file usage (fixes #1392)

Fallback to a DDS file if the requested texture path doesn't point to an existing file, not vice versa
---
 components/misc/resourcehelpers.cpp | 22 +++++-----------------
 1 file changed, 5 insertions(+), 17 deletions(-)

diff --git a/components/misc/resourcehelpers.cpp b/components/misc/resourcehelpers.cpp
index 5cf4378b8..f38387ff8 100644
--- a/components/misc/resourcehelpers.cpp
+++ b/components/misc/resourcehelpers.cpp
@@ -63,28 +63,16 @@ std::string Misc::ResourceHelpers::correctResourcePath(const std::string &topLev
 
     std::string origExt = correctedPath;
 
-    // since we know all (GOTY edition or less) textures end
-    // in .dds, we change the extension
-    bool changedToDds = changeExtensionToDds(correctedPath);
-    if (vfs->exists(correctedPath))
+    if (vfs->exists(origExt)
+     || (changeExtensionToDds(correctedPath) && vfs->exists(correctedPath)))
         return correctedPath;
-    // if it turns out that the above wasn't true in all cases (not for vanilla, but maybe mods)
-    // verify, and revert if false (this call succeeds quickly, but fails slowly)
-    if (changedToDds && vfs->exists(origExt))
-        return origExt;
 
     // fall back to a resource in the top level directory if it exists
-    std::string fallback = topLevelDirectory + "\\" + getBasename(correctedPath);
-    if (vfs->exists(fallback))
+    std::string fallback = topLevelDirectory + "\\" + getBasename(origExt);
+    if (vfs->exists(fallback)
+     || (changeExtensionToDds(fallback) && vfs->exists(fallback)))
         return fallback;
 
-    if (changedToDds)
-    {
-        fallback = topLevelDirectory + "\\" + getBasename(origExt);
-        if (vfs->exists(fallback))
-            return fallback;
-    }
-
     return correctedPath;
 }
 

From 8617d0603b9d8b0fe4ce89cdee593bb032505230 Mon Sep 17 00:00:00 2001
From: Capostrophic <alexdobrohotov@yandex.ru>
Date: Wed, 18 Apr 2018 18:25:53 +0300
Subject: [PATCH 2/3] Display a message if a spell the player tries to use via
 a quick key is missing (fixes #4391)

---
 apps/openmw/mwgui/quickkeysmenu.cpp | 5 +++++
 1 file changed, 5 insertions(+)

diff --git a/apps/openmw/mwgui/quickkeysmenu.cpp b/apps/openmw/mwgui/quickkeysmenu.cpp
index 6da7b0905..2ce9d04e5 100644
--- a/apps/openmw/mwgui/quickkeysmenu.cpp
+++ b/apps/openmw/mwgui/quickkeysmenu.cpp
@@ -330,7 +330,12 @@ namespace MWGui
             MWMechanics::CreatureStats& stats = player.getClass().getCreatureStats(player);
             MWMechanics::Spells& spells = stats.getSpells();
             if (!spells.hasSpell(spellId))
+            {
+                const ESM::Spell* spell = MWBase::Environment::get().getWorld()->getStore().get<ESM::Spell>().find(spellId);
+                MWBase::Environment::get().getWindowManager()->messageBox (
+                            "#{sQuickMenu5} " + spell->mName);
                 return;
+            }
             store.setSelectedEnchantItem(store.end());
             MWBase::Environment::get().getWindowManager()->setSelectedSpell(spellId, int(MWMechanics::getSpellSuccessChance(spellId, player)));
             MWBase::Environment::get().getWorld()->getPlayer().setDrawState(MWMechanics::DrawState_Spell);

From 48467814d4745cfe27835bd59cd1be6a98f29d58 Mon Sep 17 00:00:00 2001
From: Capostrophic <Capostrophic@users.noreply.github.com>
Date: Sun, 8 Apr 2018 23:10:14 +0300
Subject: [PATCH 3/3] Improve random number generation

---
 components/misc/rng.cpp | 15 +++++++++------
 components/misc/rng.hpp |  4 ++++
 2 files changed, 13 insertions(+), 6 deletions(-)

diff --git a/components/misc/rng.cpp b/components/misc/rng.cpp
index df0fc687e..dfe0eff40 100644
--- a/components/misc/rng.cpp
+++ b/components/misc/rng.cpp
@@ -1,28 +1,31 @@
 #include "rng.hpp"
-#include <cstdlib>
-#include <ctime>
+
+#include <chrono>
+#include <random>
 
 namespace Misc
 {
 
+    std::mt19937 Rng::generator = std::mt19937();
+
     void Rng::init()
     {
-        std::srand(static_cast<unsigned int>(std::time(NULL)));
+        generator.seed(static_cast<unsigned int>(std::chrono::high_resolution_clock::now().time_since_epoch().count()));
     }
 
     float Rng::rollProbability()
     {
-        return static_cast<float>(std::rand() / (static_cast<double>(RAND_MAX)+1.0));
+        return std::uniform_real_distribution<float>(0, 1 - std::numeric_limits<float>::epsilon())(generator);
     }
 
     float Rng::rollClosedProbability()
     {
-        return static_cast<float>(std::rand() / static_cast<double>(RAND_MAX));
+        return std::uniform_real_distribution<float>(0, 1)(generator);
     }
 
     int Rng::rollDice(int max)
     {
-        return static_cast<int>((std::rand() / (static_cast<double>(RAND_MAX)+1.0)) * (max));
+        return std::uniform_int_distribution<int>(0, max - 1)(generator);
     }
 
 }
diff --git a/components/misc/rng.hpp b/components/misc/rng.hpp
index 01fcdd763..ff56906d9 100644
--- a/components/misc/rng.hpp
+++ b/components/misc/rng.hpp
@@ -2,6 +2,7 @@
 #define OPENMW_COMPONENTS_MISC_RNG_H
 
 #include <cassert>
+#include <random>
 
 namespace Misc
 {
@@ -13,6 +14,9 @@ class Rng
 {
 public:
 
+    /// create a RNG
+    static std::mt19937 generator;
+
     /// seed the RNG
     static void init();