Remove PhysicsManager singleton and use shared_ptr instead. Resolves the issue where sometimes destructors were called in an unexpected sequence resulting in a crash while exiting the application.

apps/opencs/model/doc/document.cpp

@@ -9,6 +9,8 @@
 #include <components/files/configurationmanager.hpp>
 #endif
 
+#include "../../view/world/physicssystem.hpp"
+
 void CSMDoc::Document::addGmsts()
 {
     static const char *gmstFloats[] =
@@ -2253,7 +2255,7 @@ CSMDoc::Document::Document (const Files::ConfigurationManager& configuration,
   mProjectPath ((configuration.getUserDataPath() / "projects") /
   (savePath.filename().string() + ".project")),
   mSaving (*this, mProjectPath, encoding),
-  mRunner (mProjectPath)
+  mRunner (mProjectPath), mPhysics(boost::shared_ptr<CSVWorld::PhysicsSystem>())
 {
     if (mContentFiles.empty())
         throw std::runtime_error ("Empty content file sequence");
@@ -2464,3 +2466,11 @@ void CSMDoc::Document::progress (int current, int max, int type)
 {
     emit progress (current, max, type, 1, this);
 }
+
+boost::shared_ptr<CSVWorld::PhysicsSystem> CSMDoc::Document::getPhysics ()
+{
+    if(!mPhysics)
+        mPhysics = boost::shared_ptr<CSVWorld::PhysicsSystem> (new CSVWorld::PhysicsSystem());
+
+    return mPhysics;
+}