Move resourcemanager from class to namespace.

45 files changed, 723 insertions, 488 deletions

diff --git a/src/actions/actions.cpp b/src/actions/actions.cpp
index b4fadf62d..c6d48a1d9 100644
--- a/src/actions/actions.cpp
+++ b/src/actions/actions.cpp
@@ -1038,7 +1038,7 @@ impHandler0(who)
 
 impHandler0(cleanGraphics)
 {
-    resourceManager->clearCache();
+    ResourceManager::clearCache();
 
     if (debugChatTab)
     {
@@ -1274,20 +1274,20 @@ impHandler(dump)
 
     if (!event.args.empty())
     {
-        ResourceManager::Resources *res = resourceManager->getResources();
+        ResourceManager::Resources *res = ResourceManager::getResources();
         // TRANSLATORS: dump command
         showRes(_("Resource images:"), res);
-        res = resourceManager->getOrphanedResources();
+        res = ResourceManager::getOrphanedResources();
         // TRANSLATORS: dump command
         showRes(_("Resource orphaned images:"), res);
     }
     else
     {
-        ResourceManager::Resources *res = resourceManager->getResources();
+        ResourceManager::Resources *res = ResourceManager::getResources();
         // TRANSLATORS: dump command
         debugChatTab->chatLog(_("Resource images:") + toString(res->size()),
             ChatMsgType::BY_SERVER);
-        res = resourceManager->getOrphanedResources();
+        res = ResourceManager::getOrphanedResources();
         // TRANSLATORS: dump command
         debugChatTab->chatLog(_("Resource orphaned images:")
             + toString(res->size()),
diff --git a/src/client.cpp b/src/client.cpp
index f1ede82a2..2868b675d 100644
--- a/src/client.cpp
+++ b/src/client.cpp
@@ -334,7 +334,6 @@ void Client::gameInit()
         ConfigManager::storeSafeParameters();
 #endif  // ANDROID
 
-    ResourceManager::init();
     if (!VirtFs::setWriteDir(settings.localDataDir))
     {
         logger->error(strprintf("%s couldn't be set as home directory! "
@@ -1039,7 +1038,7 @@ int Client::gameExec()
                 delete2(mGame);
                 assertListener = new AssertListener;
                 Game::clearInstance();
-                resourceManager->cleanOrphans();
+                ResourceManager::cleanOrphans();
                 Party::clearParties();
                 Guild::clearGuilds();
                 NpcDialog::clearDialogs();
@@ -1111,7 +1110,7 @@ int Client::gameExec()
                             "local/"));
                     }
 
-                    resourceManager->clearCache();
+                    ResourceManager::clearCache();
 
                     loginData.clearUpdateHost();
                     serverVersion = 0;
diff --git a/src/dyetool/client.cpp b/src/dyetool/client.cpp
index cf3fceed6..0815272d4 100644
--- a/src/dyetool/client.cpp
+++ b/src/dyetool/client.cpp
@@ -189,7 +189,6 @@ void Client::gameInit()
         ConfigManager::storeSafeParameters();
 #endif  // ANDROID
 
-    ResourceManager::init();
     if (!VirtFs::setWriteDir(settings.localDataDir))
     {
         logger->error(strprintf("%s couldn't be set as home directory! "
diff --git a/src/dyetool/dyemain.cpp b/src/dyetool/dyemain.cpp
index 3b6fafb3b..9ee1bd0a9 100644
--- a/src/dyetool/dyemain.cpp
+++ b/src/dyetool/dyemain.cpp
@@ -87,7 +87,6 @@ int main(int argc, char **argv)
     imageHelper = new SDLImageHelper;
 #endif  // USE_SDL2
 
-    ResourceManager::init();
     VirtFs::setWriteDir(".");
     VirtFs::mountDir(".", Append_false);
     VirtFs::mountDir("/", Append_false);
diff --git a/src/fs/files_unittest.cc b/src/fs/files_unittest.cc
index bb9822343..bc4c2dbf6 100644
--- a/src/fs/files_unittest.cc
+++ b/src/fs/files_unittest.cc
@@ -35,7 +35,6 @@
 TEST_CASE("Files renameFile")
 {
     logger = new Logger();
-    ResourceManager::init();
     VirtFs::mountDirSilent("data", Append_false);
     VirtFs::mountDirSilent("../data", Append_false);
 
@@ -74,7 +73,6 @@ TEST_CASE("Files renameFile")
 TEST_CASE("Files existsLocal")
 {
     logger = new Logger();
-    ResourceManager::init();
     VirtFs::mountDirSilent("data", Append_false);
     VirtFs::mountDirSilent("../data", Append_false);
     REQUIRE(Files::existsLocal(VirtFs::getPath("help/about.txt")) == true);
@@ -90,7 +88,6 @@ TEST_CASE("Files existsLocal")
 TEST_CASE("Files loadTextFileString")
 {
     logger = new Logger();
-    ResourceManager::init();
     VirtFs::mountDirSilent("data", Append_false);
     VirtFs::mountDirSilent("../data", Append_false);
     REQUIRE(VirtFs::loadTextFileString("test/simplefile.txt") ==
@@ -105,7 +102,6 @@ TEST_CASE("Files loadTextFileString")
 TEST_CASE("Files loadTextFile")
 {
     logger = new Logger();
-    ResourceManager::init();
     VirtFs::mountDirSilent("data", Append_false);
     VirtFs::mountDirSilent("../data", Append_false);
 
@@ -124,7 +120,6 @@ TEST_CASE("Files loadTextFile")
 TEST_CASE("Files saveTextFile")
 {
     logger = new Logger();
-    ResourceManager::init();
     VirtFs::mountDirSilent("data", Append_false);
     VirtFs::mountDirSilent("../data", Append_false);
 
@@ -150,7 +145,6 @@ TEST_CASE("Files saveTextFile")
 TEST_CASE("Files getFilesInDir")
 {
     logger = new Logger();
-    ResourceManager::init();
     VirtFs::mountDirSilent("data", Append_false);
     VirtFs::mountDirSilent("../data", Append_false);
 
diff --git a/src/game.cpp b/src/game.cpp
index a00c6cfea..c8d51aff4 100644
--- a/src/game.cpp
+++ b/src/game.cpp
@@ -1026,7 +1026,7 @@ void Game::changeMap(const std::string &mapPath)
     BLOCK_START("Game::changeMap")
 
     resetAdjustLevel();
-    resourceManager->cleanProtected();
+    ResourceManager::cleanProtected();
 
     if (popupManager)
     {
diff --git a/src/gui/gui.cpp b/src/gui/gui.cpp
index 06afeccc6..227b0c463 100644
--- a/src/gui/gui.cpp
+++ b/src/gui/gui.cpp
@@ -300,7 +300,7 @@ Gui::~Gui()
 void Gui::logic()
 {
     BLOCK_START("Gui::logic")
-    resourceManager->clearScheduled();
+    ResourceManager::clearScheduled();
 
     if (!mTop)
     {
@@ -359,8 +359,7 @@ void Gui::slowLogic()
         if (time > mTime10 || mTime10 - time > 10)
         {
             mTime10 = time + 10;
-            if (resourceManager)
-                resourceManager->cleanOrphans();
+            ResourceManager::cleanOrphans();
         }
     }
 
diff --git a/src/gui/widgets/browserbox_unittest.cc b/src/gui/widgets/browserbox_unittest.cc
index 6064dfd72..e86aa6b0e 100644
--- a/src/gui/widgets/browserbox_unittest.cc
+++ b/src/gui/widgets/browserbox_unittest.cc
@@ -47,11 +47,19 @@
 
 extern const char *dirSeparator;
 
+TEST_CASE("BrowserBox leak test1")
+{
+    logger = new Logger();
+    REQUIRE(gui == nullptr);
+    ResourceManager::cleanOrphans(true);
+    ResourceManager::deleteInstance();
+    delete2(logger);
+}
+
 TEST_CASE("BrowserBox tests", "browserbox")
 {
     client = new Client;
     logger = new Logger();
-    ResourceManager::init();
     VirtFs::mountDirSilent("data", Append_false);
     VirtFs::mountDirSilent("../data", Append_false);
 
@@ -189,3 +197,12 @@ TEST_CASE("BrowserBox tests", "browserbox")
     delete2(logger);
 //    VirtFs::deinit();
 }
+
+TEST_CASE("BrowserBox leak test2")
+{
+    logger = new Logger();
+    REQUIRE(gui == nullptr);
+    ResourceManager::cleanOrphans(true);
+    ResourceManager::deleteInstance();
+    delete2(logger);
+}
diff --git a/src/gui/widgets/desktop.cpp b/src/gui/widgets/desktop.cpp
index 4aeea03b5..83d5bd58e 100644
--- a/src/gui/widgets/desktop.cpp
+++ b/src/gui/widgets/desktop.cpp
@@ -182,7 +182,7 @@ void Desktop::setBestFittingWallpaper()
     {
         if (mWallpaper)
         {
-            resourceManager->decRefDelete(mWallpaper);
+            ResourceManager::decRefDelete(mWallpaper);
             mWallpaper = nullptr;
         }
 
@@ -200,7 +200,7 @@ void Desktop::setBestFittingWallpaper()
 
             if (newRsclWlPpr)
             {
-                resourceManager->decRefDelete(nWallPaper);
+                ResourceManager::decRefDelete(nWallPaper);
                 // We replace the resource in the resource manager
                 mWallpaper = newRsclWlPpr;
             }
diff --git a/src/gui/windowmanager_unittest.cc b/src/gui/windowmanager_unittest.cc
index 49ea9d97c..b19844ac9 100644
--- a/src/gui/windowmanager_unittest.cc
+++ b/src/gui/windowmanager_unittest.cc
@@ -130,6 +130,15 @@
 
 extern QuitDialog *quitDialog;
 
+TEST_CASE("windows leak test1")
+{
+    logger = new Logger();
+    REQUIRE(gui == nullptr);
+    ResourceManager::cleanOrphans(true);
+    ResourceManager::deleteInstance();
+    delete2(logger);
+}
+
 TEST_CASE("Windows tests", "windowmanager")
 {
     setEnv("SDL_VIDEODRIVER", "dummy");
@@ -139,8 +148,7 @@ TEST_CASE("Windows tests", "windowmanager")
     SDL_Init(SDL_INIT_VIDEO);
     logger = new Logger();
     ResourceManager::deleteInstance();
-    ResourceManager::init();
-    resourceManager->cleanOrphans(true);
+    ResourceManager::cleanOrphans(true);
     VirtFs::mountDirSilent("data", Append_false);
     VirtFs::mountDirSilent("../data", Append_false);
     VirtFs::mountDirSilent("data/test", Append_false);
@@ -723,8 +731,7 @@ TEST_CASE("WindowManager", "create windows")
     SDL_Init(SDL_INIT_VIDEO);
     logger = new Logger();
     ResourceManager::deleteInstance();
-    ResourceManager::init();
-    resourceManager->cleanOrphans(true);
+    ResourceManager::cleanOrphans(true);
     VirtFs::mountDirSilent("data", Append_false);
     VirtFs::mountDirSilent("../data", Append_false);
     VirtFs::mountDirSilent("data/test", Append_false);
@@ -869,3 +876,12 @@ TEST_CASE("WindowManager", "create windows")
 
 //    VirtFs::deinit();
 }
+
+TEST_CASE("windows leak test2")
+{
+    logger = new Logger();
+    REQUIRE(gui == nullptr);
+    ResourceManager::cleanOrphans(true);
+    ResourceManager::deleteInstance();
+    delete2(logger);
+}
diff --git a/src/integrity_unittest.cc b/src/integrity_unittest.cc
index 34312b7b3..41a57f41d 100644
--- a/src/integrity_unittest.cc
+++ b/src/integrity_unittest.cc
@@ -30,6 +30,8 @@
 #include "fs/virtfs/virtfs.h"
 #include "fs/virtfs/virtfsrwops.h"
 
+#include "gui/gui.h"
+
 #include "input/inputactionmap.h"
 
 #include "resources/image/image.h"
@@ -93,6 +95,15 @@ static bool compareBuffers(const unsigned char *const buf2)
     return isCorrect;
 }
 
+TEST_CASE("integrity leak test1")
+{
+    logger = new Logger();
+    REQUIRE(gui == nullptr);
+    ResourceManager::cleanOrphans(true);
+    ResourceManager::deleteInstance();
+    delete2(logger);
+}
+
 TEST_CASE("integrity tests", "integrity")
 {
     setEnv("SDL_VIDEODRIVER", "dummy");
@@ -101,7 +112,6 @@ TEST_CASE("integrity tests", "integrity")
     XML::initXML();
     SDL_Init(SDL_INIT_VIDEO);
     logger = new Logger();
-    ResourceManager::init();
     std::string name("data/test/test.zip");
     std::string prefix;
     if (Files::existsLocal(name) == false)
@@ -326,7 +336,7 @@ TEST_CASE("integrity tests", "integrity")
         image->decRef();
     }
 
-    resourceManager->cleanOrphans(true);
+    ResourceManager::cleanOrphans(true);
 
     delete client;
     client = nullptr;
@@ -336,3 +346,12 @@ TEST_CASE("integrity tests", "integrity")
     delete2(logger);
 //    VirtFs::deinit();
 }
+
+TEST_CASE("integrity leak test2")
+{
+    logger = new Logger();
+    REQUIRE(gui == nullptr);
+    ResourceManager::cleanOrphans(true);
+    ResourceManager::deleteInstance();
+    delete2(logger);
+}
diff --git a/src/resources/atlas/atlasmanager.cpp b/src/resources/atlas/atlasmanager.cpp
index b9107a757..91749e597 100644
--- a/src/resources/atlas/atlasmanager.cpp
+++ b/src/resources/atlas/atlasmanager.cpp
@@ -132,12 +132,12 @@ void AtlasManager::loadImages(const StringVect &files,
         const std::string str = *it;
         // check is image with same name already in cache
         // and if yes, move it to deleted set
-        Resource *const res = resourceManager->getTempResource(str);
+        Resource *const res = ResourceManager::getTempResource(str);
         if (res)
         {
             // increase counter because in moveToDeleted it will be decreased.
             res->incRef();
-            resourceManager->moveToDeleted(res);
+            ResourceManager::moveToDeleted(res);
         }
 
         std::string path = str;
@@ -181,12 +181,12 @@ void AtlasManager::loadEmptyImages(const StringVect &files,
         const std::string str = *it;
         // check is image with same name already in cache
         // and if yes, move it to deleted set
-        Resource *const res = resourceManager->getTempResource(str);
+        Resource *const res = ResourceManager::getTempResource(str);
         if (res)
         {
             // increase counter because in moveToDeleted it will be decreased.
             res->incRef();
-            resourceManager->moveToDeleted(res);
+            ResourceManager::moveToDeleted(res);
         }
 
         Image *const image = new Image(0,
@@ -395,14 +395,14 @@ void AtlasManager::injectToResources(const AtlasResource *const resource)
         {
             Image *const image = atlas->atlasImage;
             if (image)
-                resourceManager->addResource(atlas->name, image);
+                ResourceManager::addResource(atlas->name, image);
             FOR_EACH (std::vector<AtlasItem*>::iterator, it2, atlas->items)
             {
                 AtlasItem *const item = *it2;
                 if (!item)
                     continue;
                 // add each atlas sub image to resources
-                resourceManager->addResource(item->name, item->image);
+                ResourceManager::addResource(item->name, item->image);
             }
         }
     }
@@ -422,7 +422,7 @@ void AtlasManager::moveToDeleted(AtlasResource *const resource)
             if (image)
             {
                 // move each atlas image to deleted
-                resourceManager->moveToDeleted(image);
+                ResourceManager::moveToDeleted(image);
             }
             FOR_EACH (std::vector<AtlasItem*>::iterator, it2, atlas->items)
             {
@@ -433,7 +433,7 @@ void AtlasManager::moveToDeleted(AtlasResource *const resource)
                     if (image2)
                     {
                         // move each atlas sub image to deleted
-                        resourceManager->moveToDeleted(image2);
+                        ResourceManager::moveToDeleted(image2);
                     }
                 }
             }
diff --git a/src/resources/atlas/atlasresource.cpp b/src/resources/atlas/atlasresource.cpp
index 5f2a3d3c7..06ae62542 100644
--- a/src/resources/atlas/atlasresource.cpp
+++ b/src/resources/atlas/atlasresource.cpp
@@ -53,7 +53,7 @@ AtlasResource::~AtlasResource()
             delete atlas;
         }
     }
-    resourceManager->clearDeleted(false);
+    ResourceManager::clearDeleted(false);
 }
 
 void AtlasResource::incRef()
diff --git a/src/resources/dye/dye_unittest.cc b/src/resources/dye/dye_unittest.cc
index 4323a28f6..f31097cbe 100644
--- a/src/resources/dye/dye_unittest.cc
+++ b/src/resources/dye/dye_unittest.cc
@@ -28,6 +28,8 @@
 
 #include "fs/virtfs/virtfs.h"
 
+#include "gui/gui.h"
+
 #include "resources/sdlimagehelper.h"
 #ifdef USE_SDL2
 #include "resources/surfaceimagehelper.h"
@@ -53,6 +55,15 @@
 
 #ifdef USE_OPENGL
 
+TEST_CASE("Dye leak test1")
+{
+    logger = new Logger();
+    REQUIRE(gui == nullptr);
+    ResourceManager::cleanOrphans(true);
+    ResourceManager::deleteInstance();
+    delete2(logger);
+}
+
 TEST_CASE("Dye replaceSOGLColor 1 1")
 {
     DyePalette palette("#00ff00,000011", 6);
@@ -2357,7 +2368,6 @@ TEST_CASE("Dye real dye")
     client = new Client;
     SDL_Init(SDL_INIT_VIDEO);
     logger = new Logger();
-    ResourceManager::init();
     VirtFs::mountDirSilent("data", Append_false);
     VirtFs::mountDirSilent("../data", Append_false);
     VirtFs::mountDirSilent("data/test", Append_false);
@@ -2400,3 +2410,12 @@ TEST_CASE("Dye real dye")
     delete2(logger);
 //    VirtFs::deinit();
 }
+
+TEST_CASE("Dye leak test2")
+{
+    logger = new Logger();
+    REQUIRE(gui == nullptr);
+    ResourceManager::cleanOrphans(true);
+    ResourceManager::deleteInstance();
+    delete2(logger);
+}
diff --git a/src/resources/dye/dyepalette_unittest.cc b/src/resources/dye/dyepalette_unittest.cc
index 14e5e5d49..280a74ead 100644
--- a/src/resources/dye/dyepalette_unittest.cc
+++ b/src/resources/dye/dyepalette_unittest.cc
@@ -52,6 +52,15 @@
 
 #include "debug.h"
 
+TEST_CASE("DyePalette leak test1")
+{
+    logger = new Logger();
+    REQUIRE(gui == nullptr);
+    ResourceManager::cleanOrphans(true);
+    ResourceManager::deleteInstance();
+    delete2(logger);
+}
+
 TEST_CASE("DyePalette tests")
 {
     setEnv("SDL_VIDEODRIVER", "dummy");
@@ -60,7 +69,6 @@ TEST_CASE("DyePalette tests")
     XML::initXML();
     SDL_Init(SDL_INIT_VIDEO);
     logger = new Logger();
-    ResourceManager::init();
     VirtFs::mountDirSilent("data", Append_false);
     VirtFs::mountDirSilent("../data", Append_false);
     VirtFs::mountDirSilent("data/test", Append_false);
@@ -399,3 +407,12 @@ TEST_CASE("DyePalette tests")
     delete2(logger);
 //    VirtFs::deinit();
 }
+
+TEST_CASE("DyePalette leak test2")
+{
+    logger = new Logger();
+    REQUIRE(gui == nullptr);
+    ResourceManager::cleanOrphans(true);
+    ResourceManager::deleteInstance();
+    delete2(logger);
+}
diff --git a/src/resources/image/image.cpp b/src/resources/image/image.cpp
index 390bf6cf1..f295be9cb 100644
--- a/src/resources/image/image.cpp
+++ b/src/resources/image/image.cpp
@@ -215,7 +215,7 @@ void Image::SDLCleanCache()
          i != i_end; ++i)
     {
         if (mSDLSurface != i->second)
-            resourceManager->scheduleDelete(i->second);
+            ResourceManager::scheduleDelete(i->second);
         i->second = nullptr;
     }
     mAlphaCache.clear();
diff --git a/src/resources/loaders/atlasloader.cpp b/src/resources/loaders/atlasloader.cpp
index c5f6691a3..1faa98b44 100644
--- a/src/resources/loaders/atlasloader.cpp
+++ b/src/resources/loaders/atlasloader.cpp
@@ -56,7 +56,7 @@ Resource *Loader::getAtlas(const std::string &name,
                            const StringVect &files)
 {
     AtlasLoader rl = { name, &files };
-    return resourceManager->get("atlas_" + name, AtlasLoader::load, &rl);
+    return ResourceManager::get("atlas_" + name, AtlasLoader::load, &rl);
 }
 
 #endif  // USE_OPENGL
diff --git a/src/resources/loaders/emptyatlasloader.cpp b/src/resources/loaders/emptyatlasloader.cpp
index 81d99cd51..6fe2f1463 100644
--- a/src/resources/loaders/emptyatlasloader.cpp
+++ b/src/resources/loaders/emptyatlasloader.cpp
@@ -57,7 +57,7 @@ Resource *Loader::getEmptyAtlas(const std::string &name,
                                 const StringVect &files)
 {
     EmptyAtlasLoader rl = { name, &files };
-    return resourceManager->get("atlas_" + name, EmptyAtlasLoader::load, &rl);
+    return ResourceManager::get("atlas_" + name, EmptyAtlasLoader::load, &rl);
 }
 
 #endif  // USE_OPENGL
diff --git a/src/resources/loaders/imageloader.cpp b/src/resources/loaders/imageloader.cpp
index 2bfba2706..5ae883886 100644
--- a/src/resources/loaders/imageloader.cpp
+++ b/src/resources/loaders/imageloader.cpp
@@ -85,6 +85,6 @@ namespace
 Image *Loader::getImage(const std::string &idPath)
 {
     DyedImageLoader rl = { idPath };
-    return static_cast<Image*>(resourceManager->get(idPath,
+    return static_cast<Image*>(ResourceManager::get(idPath,
         DyedImageLoader::load, &rl));
 }
diff --git a/src/resources/loaders/imagesetloader.cpp b/src/resources/loaders/imagesetloader.cpp
index 6ec02c699..468b97120 100644
--- a/src/resources/loaders/imagesetloader.cpp
+++ b/src/resources/loaders/imagesetloader.cpp
@@ -74,6 +74,6 @@ ImageSet *Loader::getImageSet(const std::string &imagePath,
         "x").append(toString(
         h)).append(
         "]");
-    return static_cast<ImageSet*>(resourceManager->get(str,
+    return static_cast<ImageSet*>(ResourceManager::get(str,
         ImageSetLoader::load, &rl));
 }
diff --git a/src/resources/loaders/musicloader.cpp b/src/resources/loaders/musicloader.cpp
index f23a9fc70..0d482b8a6 100644
--- a/src/resources/loaders/musicloader.cpp
+++ b/src/resources/loaders/musicloader.cpp
@@ -78,6 +78,6 @@ namespace
 SDLMusic *Loader::getMusic(const std::string &idPath)
 {
     ResourceLoader rl = { idPath };
-    return static_cast<SDLMusic*>(resourceManager->get(
+    return static_cast<SDLMusic*>(ResourceManager::get(
         idPath, ResourceLoader::load, &rl));
 }
diff --git a/src/resources/loaders/rescaledloader.cpp b/src/resources/loaders/rescaledloader.cpp
index c4c315227..e4a9112f1 100644
--- a/src/resources/loaders/rescaledloader.cpp
+++ b/src/resources/loaders/rescaledloader.cpp
@@ -72,6 +72,6 @@ Image *Loader::getRescaled(const Image *const image,
         "_rescaled%dx%d", width, height);
     const RescaledLoader rl = { image, width, height };
     Image *const img = static_cast<Image *const>(
-        resourceManager->get(idPath, RescaledLoader::load, &rl));
+        ResourceManager::get(idPath, RescaledLoader::load, &rl));
     return img;
 }
diff --git a/src/resources/loaders/shaderloader.cpp b/src/resources/loaders/shaderloader.cpp
index f06c9d219..d2ffba348 100644
--- a/src/resources/loaders/shaderloader.cpp
+++ b/src/resources/loaders/shaderloader.cpp
@@ -61,7 +61,7 @@ Resource *Loader::getShader(const unsigned int type,
                             const std::string &name)
 {
     ShaderLoader rl = { name, type };
-    return resourceManager->get("shader_" + name, ShaderLoader::load, &rl);
+    return ResourceManager::get("shader_" + name, ShaderLoader::load, &rl);
 }
 
 #endif  // USE_OPENGL
diff --git a/src/resources/loaders/shaderprogramloader.cpp b/src/resources/loaders/shaderprogramloader.cpp
index d48e1aa9f..763536a6c 100644
--- a/src/resources/loaders/shaderprogramloader.cpp
+++ b/src/resources/loaders/shaderprogramloader.cpp
@@ -66,7 +66,7 @@ Resource *Loader::getShaderProgram(const std::string &vertex,
                                    const bool isNewShader)
 {
     ShaderProgramLoader rl = { vertex, fragment, isNewShader };
-    return resourceManager->get("program_" + vertex + " + " + fragment,
+    return ResourceManager::get("program_" + vertex + " + " + fragment,
         ShaderProgramLoader::load, &rl);
 }
 
diff --git a/src/resources/loaders/soundloader.cpp b/src/resources/loaders/soundloader.cpp
index be71a5ddb..bff769755 100644
--- a/src/resources/loaders/soundloader.cpp
+++ b/src/resources/loaders/soundloader.cpp
@@ -73,6 +73,6 @@ namespace
 SoundEffect *Loader::getSoundEffect(const std::string &idPath)
 {
     ResourceLoader rl = { idPath };
-    return static_cast<SoundEffect*>(resourceManager->get(
+    return static_cast<SoundEffect*>(ResourceManager::get(
         idPath, ResourceLoader::load, &rl));
 }
diff --git a/src/resources/loaders/spritedefloader.cpp b/src/resources/loaders/spritedefloader.cpp
index c140c8f73..bdc0c40f0 100644
--- a/src/resources/loaders/spritedefloader.cpp
+++ b/src/resources/loaders/spritedefloader.cpp
@@ -63,6 +63,6 @@ SpriteDef *Loader::getSprite(const std::string &path,
         "[").append(toString(
         variant).append(
         "]"));
-    return static_cast<SpriteDef*>(resourceManager->get(str,
+    return static_cast<SpriteDef*>(ResourceManager::get(str,
         SpriteDefLoader::load, &rl));
 }
diff --git a/src/resources/loaders/subimageloader.cpp b/src/resources/loaders/subimageloader.cpp
index f2f7ad7de..804e957a5 100644
--- a/src/resources/loaders/subimageloader.cpp
+++ b/src/resources/loaders/subimageloader.cpp
@@ -85,6 +85,6 @@ Image *Loader::getSubImage(Image *const parent,
         "x").append(
         toString(height)).append(
         "]");
-    return static_cast<Image*>(resourceManager->get(str,
+    return static_cast<Image*>(ResourceManager::get(str,
         SubImageLoader::load, &rl));
 }
diff --git a/src/resources/loaders/subimagesetloader.cpp b/src/resources/loaders/subimagesetloader.cpp
index c8d0fba74..6ca43cb32 100644
--- a/src/resources/loaders/subimagesetloader.cpp
+++ b/src/resources/loaders/subimagesetloader.cpp
@@ -73,6 +73,6 @@ ImageSet *Loader::getSubImageSet(Image *const parent,
         "x").append(toString(
         height)).append(
         "]");
-    return static_cast<ImageSet*>(resourceManager->get(str,
+    return static_cast<ImageSet*>(ResourceManager::get(str,
         SubImageSetLoader::load, &rl));
 }
diff --git a/src/resources/loaders/walklayerloader.cpp b/src/resources/loaders/walklayerloader.cpp
index 71f94539a..99d7a251f 100644
--- a/src/resources/loaders/walklayerloader.cpp
+++ b/src/resources/loaders/walklayerloader.cpp
@@ -58,7 +58,7 @@ WalkLayer *Loader::getWalkLayer(const std::string &name,
                                 Map *const map)
 {
     WalkLayerLoader rl = {name, map};
-    return static_cast<WalkLayer*>(resourceManager->get("map_" + name,
+    return static_cast<WalkLayer*>(ResourceManager::get("map_" + name,
         WalkLayerLoader::load, &rl));
 }
 #else  // DYECMD
diff --git a/src/resources/loaders/xmlloader.cpp b/src/resources/loaders/xmlloader.cpp
index ac005bc06..74dd46ef9 100644
--- a/src/resources/loaders/xmlloader.cpp
+++ b/src/resources/loaders/xmlloader.cpp
@@ -58,7 +58,7 @@ XML::Document *Loader::getXml(const std::string &idPath,
                               const SkipError skipError)
 {
     ResourceLoader rl = { idPath, useResman, skipError };
-    return static_cast<XML::Document*>(resourceManager->get(
+    return static_cast<XML::Document*>(ResourceManager::get(
         idPath, ResourceLoader::load, &rl));
 }
 
diff --git a/src/resources/map/maplayer_unittest.cc b/src/resources/map/maplayer_unittest.cc
index 945c52b0e..e8066029c 100644
--- a/src/resources/map/maplayer_unittest.cc
+++ b/src/resources/map/maplayer_unittest.cc
@@ -1649,7 +1649,6 @@ TEST_CASE("MapLayer draw")
 TEST_CASE("MapLayer drawSpecialLayer (specialLayer)")
 {
     logger = new Logger;
-    ResourceManager::init();
     VirtFs::mountDirSilent("data", Append_false);
     VirtFs::mountDirSilent("../data", Append_false);
 
@@ -2002,7 +2001,6 @@ TEST_CASE("MapLayer drawSpecialLayer (specialLayer)")
 TEST_CASE("MapLayer drawSpecialLayer (tempLayer)")
 {
     logger = new Logger;
-    ResourceManager::init();
     VirtFs::mountDirSilent("data", Append_false);
     VirtFs::mountDirSilent("../data", Append_false);
 
@@ -2361,7 +2359,6 @@ TEST_CASE("MapLayer drawSpecialLayer (tempLayer)")
 TEST_CASE("MapLayer drawFringe")
 {
     logger = new Logger;
-    ResourceManager::init();
     VirtFs::mountDirSilent("data", Append_false);
     VirtFs::mountDirSilent("../data", Append_false);
 
diff --git a/src/resources/map/speciallayer_unittest.cc b/src/resources/map/speciallayer_unittest.cc
index 93270d7e5..d43daaac8 100644
--- a/src/resources/map/speciallayer_unittest.cc
+++ b/src/resources/map/speciallayer_unittest.cc
@@ -30,6 +30,8 @@
 
 #include "fs/virtfs/virtfs.h"
 
+#include "gui/gui.h"
+
 #include "utils/delete2.h"
 
 #include "resources/sdlimagehelper.h"
@@ -40,11 +42,19 @@
 
 #include "debug.h"
 
+TEST_CASE("SpecialLayer leak test1")
+{
+    logger = new Logger();
+    REQUIRE(gui == nullptr);
+    ResourceManager::cleanOrphans(true);
+    ResourceManager::deleteInstance();
+    delete2(logger);
+}
+
 TEST_CASE("SpecialLayer updateCache")
 {
     logger = new Logger;
     client = new Client;
-    ResourceManager::init();
     VirtFs::mountDirSilent("data", Append_false);
     VirtFs::mountDirSilent("../data", Append_false);
 
@@ -260,9 +270,18 @@ TEST_CASE("SpecialLayer updateCache")
     }
 
     delete layer;
-    resourceManager->cleanOrphans();
+    ResourceManager::cleanOrphans();
     delete2(client);
     VirtFs::unmountDirSilent("data");
     VirtFs::unmountDirSilent("../data");
     delete2(logger);
 }
+
+TEST_CASE("SpecialLayer leak test2")
+{
+    logger = new Logger();
+    REQUIRE(gui == nullptr);
+    ResourceManager::cleanOrphans(true);
+    ResourceManager::deleteInstance();
+    delete2(logger);
+}
diff --git a/src/resources/memorymanager.cpp b/src/resources/memorymanager.cpp
index 01e67eb1b..55d157c5f 100644
--- a/src/resources/memorymanager.cpp
+++ b/src/resources/memorymanager.cpp
@@ -80,14 +80,12 @@ void MemoryManager::printAllMemory(ChatTab *const tab A_DYECMD_UNUSED)
 {
     if (!logger)
         return;
+
 #ifdef DYECMD
-    if (resourceManager)
-        resourceManager->calcMemory(0);
+    ResourceManager::calcMemory(0);
 #else  // DYECMD
 
-    int sz = 0;
-    if (resourceManager)
-        sz += resourceManager->calcMemory(0);
+    int sz = ResourceManager::calcMemory(0);
     if (tab)
     {
         // TRANSLATORS: memory usage chat message
diff --git a/src/resources/resource.cpp b/src/resources/resource.cpp
index 0d01f440c..e75df7b44 100644
--- a/src/resources/resource.cpp
+++ b/src/resources/resource.cpp
@@ -66,7 +66,7 @@ void Resource::decRef()
     if (mRefCount == 0 && !mNotCount)
     {
         // Warn the manager that this resource is no longer used.
-        resourceManager->release(this);
+        ResourceManager::release(this);
     }
 }
 
diff --git a/src/resources/resource.h b/src/resources/resource.h
index e9f7e0531..4b2f57229 100644
--- a/src/resources/resource.h
+++ b/src/resources/resource.h
@@ -32,17 +32,15 @@
  */
 class Resource notfinal : public MemoryCounter
 {
-    friend class ResourceManager;
-
     public:
         /**
          * Constructor
          */
         Resource() :
             MemoryCounter(),
+            mTimeStamp(0),
             mIdPath(),
             mSource(),
-            mTimeStamp(0),
             mRefCount(0),
             mProtected(false),
 #ifdef DEBUG_DUMP_LEAKS
@@ -57,6 +55,11 @@ class Resource notfinal : public MemoryCounter
         A_DELETE_COPY(Resource)
 
         /**
+         * Destructor.
+         */
+        virtual ~Resource();
+
+        /**
          * Increments the internal reference count.
          */
         virtual void incRef();
@@ -76,6 +79,9 @@ class Resource notfinal : public MemoryCounter
         const std::string &getIdPath() const noexcept2 A_WARN_UNUSED
         { return mIdPath; }
 
+        void setIdPath(const std::string &path)
+        { mIdPath = path; }
+
         /**
          * Return refCount for this resource.
          */
@@ -110,19 +116,15 @@ class Resource notfinal : public MemoryCounter
         { mDumped = n; }
 #endif  // DEBUG_DUMP_LEAKS
 
+        time_t mTimeStamp;   /**< Time at which the resource was orphaned. */
+
 #ifndef UNITTESTS
     protected:
 #endif  // UNITTESTS
-        /**
-         * Destructor.
-         */
-        virtual ~Resource();
-
         std::string mIdPath; /**< Path identifying this resource. */
         std::string mSource;
 
     private:
-        time_t mTimeStamp;   /**< Time at which the resource was orphaned. */
         unsigned int mRefCount;  /**< Reference count. */
         bool mProtected;
         bool mNotCount;
diff --git a/src/resources/resourcemanager/resourcemanager.cpp b/src/resources/resourcemanager/resourcemanager.cpp
index aed4426b6..a5e5ebac5 100644
--- a/src/resources/resourcemanager/resourcemanager.cpp
+++ b/src/resources/resourcemanager/resourcemanager.cpp
@@ -46,20 +46,17 @@
 
 #include "debug.h"
 
-ResourceManager *resourceManager = nullptr;
-
-ResourceManager::ResourceManager() :
-    deletedSurfaces(),
-    mResources(),
-    mOrphanedResources(),
-    mDeletedResources(),
-    mOldestOrphan(0),
-    mDestruction(0)
+namespace ResourceManager
 {
-    logger->log1("Initializing resource manager...");
-}
 
-ResourceManager::~ResourceManager()
+std::set<SDL_Surface*> deletedSurfaces;
+Resources mResources;
+Resources mOrphanedResources;
+std::set<Resource*> mDeletedResources;
+time_t mOldestOrphan = 0;
+bool mDestruction = false;
+
+void deleteResourceManager()
 {
     mDestruction = true;
     mResources.insert(mOrphanedResources.begin(), mOrphanedResources.end());
@@ -171,26 +168,22 @@ ResourceManager::~ResourceManager()
     }
     clearDeleted();
     clearScheduled();
+    mDestruction = false;
 }
 
-void ResourceManager::init()
-{
-    if (!resourceManager)
-        resourceManager = new ResourceManager;
-}
-
-void ResourceManager::cleanUp(Resource *const res)
+void cleanUp(Resource *const res)
 {
     if (!res)
         return;
 
-    if (res->mRefCount > 0)
+    const unsigned refCount = res->getRefCount();
+    if (refCount > 0)
     {
         logger->log("ResourceManager::~ResourceManager() cleaning up %u "
                 "reference%s to %s",
-                res->mRefCount,
-                (res->mRefCount == 1) ? "" : "s",
-                res->mIdPath.c_str());
+                refCount,
+                (refCount == 1) ? "" : "s",
+                res->getIdPath().c_str());
     }
 
     delete res;
@@ -199,7 +192,7 @@ void ResourceManager::cleanUp(Resource *const res)
 #endif  // DEBUG_LEAKS
 }
 
-void ResourceManager::cleanProtected()
+void cleanProtected()
 {
     ResourceIterator iter = mResources.begin();
     while (iter != mResources.end())
@@ -222,7 +215,7 @@ void ResourceManager::cleanProtected()
     }
 }
 
-bool ResourceManager::cleanOrphans(const bool always)
+bool cleanOrphans(const bool always)
 {
     timeval tv;
     gettimeofday(&tv, nullptr);
@@ -266,7 +259,7 @@ bool ResourceManager::cleanOrphans(const bool always)
     return status;
 }
 
-void ResourceManager::logResource(const Resource *const res)
+void logResource(const Resource *const res)
 {
     if (!res)
         return;
@@ -278,7 +271,7 @@ void ResourceManager::logResource(const Resource *const res)
         const int count = image->getRefCount();
         if (count)
             src.append(" ").append(toString(count));
-        logger->log("resource(%s, %u) %s", res->mIdPath.c_str(),
+        logger->log("resource(%s, %u) %s", res->getIdPath().c_str(),
             image->getGLImage(), src.c_str());
     }
     else
@@ -287,15 +280,36 @@ void ResourceManager::logResource(const Resource *const res)
         const int count = res->getRefCount();
         if (count > 0)
             src.append(" ").append(toString(count));
-        logger->log("resource(%s) %s", res->mIdPath.c_str(), src.c_str());
+        logger->log("resource(%s) %s", res->getIdPath().c_str(), src.c_str());
     }
 #else  // USE_OPENGL
 
-    logger->log("resource(%s)", res->mIdPath.c_str());
+    logger->log("resource(%s)", res->getIdPath().c_str());
 #endif  // USE_OPENGL
 }
 
-void ResourceManager::clearDeleted(const bool full)
+void logResources(const std::string &msg)
+{
+    logger->log("start of resources: " + msg);
+    logger->log("resouces");
+    FOR_EACH(ResourceIterator, it, mResources)
+    {
+        logResource((*it).second);
+    }
+    logger->log("orphaned resouces");
+    FOR_EACH(ResourceIterator, it, mOrphanedResources)
+    {
+        logResource((*it).second);
+    }
+    logger->log("deleted resouces");
+    FOR_EACH(std::set<Resource*>::iterator, it, mDeletedResources)
+    {
+        logResource(*it);
+    }
+    logger->log("end of resources");
+}
+
+void clearDeleted(const bool full)
 {
     bool status(true);
     logger->log1("clear deleted");
@@ -334,17 +348,16 @@ void ResourceManager::clearDeleted(const bool full)
     }
 }
 
-
-bool ResourceManager::addResource(const std::string &idPath,
-                                  Resource *const resource)
+bool addResource(const std::string &idPath,
+                 Resource *const resource)
 {
     if (resource)
     {
         resource->incRef();
-        resource->mIdPath = idPath;
+        resource->setIdPath(idPath);
 #ifdef DEBUG_IMAGES
         logger->log("set name %p, %s", static_cast<void*>(resource),
-            resource->mIdPath.c_str());
+            resource->getIdPath().c_str());
 #endif  // DEBUG_IMAGES
 
         mResources[idPath] = resource;
@@ -353,21 +366,21 @@ bool ResourceManager::addResource(const std::string &idPath,
     return false;
 }
 
-Resource *ResourceManager::getFromCache(const std::string &filename,
-                                        const int variant)
+Resource *getFromCache(const std::string &filename,
+                       const int variant)
 {
     std::stringstream ss;
     ss << filename << "[" << variant << "]";
     return getFromCache(ss.str());
 }
 
-bool ResourceManager::isInCache(const std::string &idPath) const
+bool isInCache(const std::string &idPath)
 {
     const ResourceCIterator &resIter = mResources.find(idPath);
     return (resIter != mResources.end() && resIter->second);
 }
 
-Resource *ResourceManager::getTempResource(const std::string &idPath)
+Resource *getTempResource(const std::string &idPath)
 {
     const ResourceCIterator &resIter = mResources.find(idPath);
     if (resIter != mResources.end())
@@ -379,7 +392,7 @@ Resource *ResourceManager::getTempResource(const std::string &idPath)
     return nullptr;
 }
 
-Resource *ResourceManager::getFromCache(const std::string &idPath)
+Resource *getFromCache(const std::string &idPath)
 {
     // Check if the id exists, and return the value if it does.
     ResourceIterator resIter = mResources.find(idPath);
@@ -403,9 +416,9 @@ Resource *ResourceManager::getFromCache(const std::string &idPath)
     return nullptr;
 }
 
-Resource *ResourceManager::get(const std::string &idPath,
-                               generator fun,
-                               const void *const data)
+Resource *get(const std::string &idPath,
+              generator fun,
+              const void *const data)
 {
 #ifndef DISABLE_RESOURCE_CACHING
     Resource *resource = getFromCache(idPath);
@@ -416,10 +429,10 @@ Resource *ResourceManager::get(const std::string &idPath,
     if (resource)
     {
         resource->incRef();
-        resource->mIdPath = idPath;
+        resource->setIdPath(idPath);
 #ifdef DEBUG_IMAGES
         logger->log("set name %p, %s", static_cast<void*>(resource),
-            resource->mIdPath.c_str());
+            resource->getIdPath().c_str());
 #endif  // DEBUG_IMAGES
 
         mResources[idPath] = resource;
@@ -435,10 +448,10 @@ Resource *ResourceManager::get(const std::string &idPath,
     if (resource)
     {
         resource->incRef();
-        resource->mIdPath = idPath;
+        resource->setIdPath(idPath);
 #ifdef DEBUG_IMAGES
         logger->log("set name %p, %s", static_cast<void*>(resource),
-            resource->mIdPath.c_str());
+            resource->getIdPath().c_str());
 #endif  // DEBUG_IMAGES
     }
     else
@@ -451,7 +464,7 @@ Resource *ResourceManager::get(const std::string &idPath,
     return resource;
 }
 
-void ResourceManager::release(Resource *const res)
+void release(Resource *const res)
 {
     if (!res || mDestruction)
         return;
@@ -466,19 +479,19 @@ void ResourceManager::release(Resource *const res)
         return;
     }
 
-    ResourceIterator resIter = mResources.find(res->mIdPath);
+    ResourceIterator resIter = mResources.find(res->getIdPath());
 
     if (resIter == mResources.end())
     {
         reportAlways("no resource in cache: %s",
-            res->mIdPath.c_str());
+            res->getIdPath().c_str());
         delete res;
         return;
     }
     if (resIter->second != res)
     {
         reportAlways("in cache other image: %s",
-            res->mIdPath.c_str());
+            res->getIdPath().c_str());
         delete res;
         return;
     }
@@ -499,7 +512,7 @@ void ResourceManager::release(Resource *const res)
 #endif  // DISABLE_RESOURCE_CACHING
 }
 
-void ResourceManager::moveToDeleted(Resource *const res)
+void moveToDeleted(Resource *const res)
 {
     if (!res)
         return;
@@ -509,7 +522,7 @@ void ResourceManager::moveToDeleted(Resource *const res)
     if (count == 1)
         logResource(res);
     res->decRef();
-    ResourceIterator resIter = mResources.find(res->mIdPath);
+    ResourceIterator resIter = mResources.find(res->getIdPath());
     if (resIter != mResources.end() && resIter->second == res)
     {
         mResources.erase(resIter);
@@ -517,7 +530,7 @@ void ResourceManager::moveToDeleted(Resource *const res)
     }
     else
     {
-        resIter = mOrphanedResources.find(res->mIdPath);
+        resIter = mOrphanedResources.find(res->getIdPath());
         if (resIter != mOrphanedResources.end() && resIter->second == res)
         {
             mOrphanedResources.erase(resIter);
@@ -533,7 +546,7 @@ void ResourceManager::moveToDeleted(Resource *const res)
     }
 }
 
-void ResourceManager::decRefDelete(Resource *const res)
+void decRefDelete(Resource *const res)
 {
     if (!res)
         return;
@@ -543,14 +556,14 @@ void ResourceManager::decRefDelete(Resource *const res)
     {
         logResource(res);
 
-        ResourceIterator resIter = mResources.find(res->mIdPath);
+        ResourceIterator resIter = mResources.find(res->getIdPath());
         if (resIter != mResources.end() && resIter->second == res)
         {
             mResources.erase(resIter);
         }
         else
         {
-            resIter = mOrphanedResources.find(res->mIdPath);
+            resIter = mOrphanedResources.find(res->getIdPath());
             if (resIter != mOrphanedResources.end() && resIter->second == res)
                 mOrphanedResources.erase(resIter);
         }
@@ -563,55 +576,52 @@ void ResourceManager::decRefDelete(Resource *const res)
     }
 }
 
-void ResourceManager::deleteInstance()
+void deleteInstance()
 {
 #ifdef DUMP_LEAKED_RESOURCES
-    if (resourceManager)
-    {
-        logger->log1("clean orphans start");
-        resourceManager->cleanProtected();
-        while (resourceManager->cleanOrphans(true))
-            continue;
-        logger->log1("clean orphans end");
-        ResourceIterator iter = resourceManager->mResources.begin();
+    logger->log1("clean orphans start");
+    ResourceManager::cleanProtected();
+    while (ResourceManager::cleanOrphans(true))
+        continue;
+    logger->log1("clean orphans end");
+    ResourceIterator iter = ResourceManager::mResources.begin();
 
 #ifdef UNITTESTS
-        bool status(false);
+    bool status(false);
 #endif  // UNITTESTS
 
-        while (iter != resourceManager->mResources.end())
+    while (iter != ResourceManager::mResources.end())
+    {
+        const Resource *const res = iter->second;
+        if (res)
         {
-            const Resource *const res = iter->second;
-            if (res)
+            if (res->getRefCount())
             {
-                if (res->getRefCount())
-                {
-                    logger->log(std::string("ResourceLeak: ").append(
-                        res->getIdPath()).append(" (").append(toString(
-                        res->getRefCount())).append(")"));
+                logger->log(std::string("ResourceLeak: ").append(
+                    res->getIdPath()).append(" (").append(toString(
+                    res->getRefCount())).append(")"));
 #ifdef UNITTESTS
-                    status = true;
+                status = true;
 #endif  // UNITTESTS
-                }
             }
-            ++iter;
         }
+        ++iter;
+    }
 #ifdef UNITTESTS
-        if (status)
-            reportAlways("Found leaked resources.");
+    if (status)
+        reportAlways("Found leaked resources.");
 #endif  // UNITTESTS
-    }
 #endif  // DUMP_LEAKED_RESOURCES
 
-    delete2(resourceManager);
+    deleteResourceManager();
 }
 
-void ResourceManager::scheduleDelete(SDL_Surface *const surface)
+void scheduleDelete(SDL_Surface *const surface)
 {
     deletedSurfaces.insert(surface);
 }
 
-void ResourceManager::clearScheduled()
+void clearScheduled()
 {
     BLOCK_START("ResourceManager::clearScheduled")
     FOR_EACH (std::set<SDL_Surface*>::iterator, i, deletedSurfaces)
@@ -620,16 +630,16 @@ void ResourceManager::clearScheduled()
     BLOCK_END("ResourceManager::clearScheduled")
 }
 
-void ResourceManager::clearCache()
+void clearCache()
 {
     cleanProtected();
     while (cleanOrphans(true))
         continue;
 }
 
-int ResourceManager::calcMemoryLocal() const
+int calcMemoryLocal()
 {
-    int sz = sizeof(ResourceManager);
+    int sz = 24;
     FOR_EACH (std::set<SDL_Surface*>::iterator, it, deletedSurfaces)
     {
         sz += memoryManager.getSurfaceSize(*it);
@@ -637,7 +647,7 @@ int ResourceManager::calcMemoryLocal() const
     return sz;
 }
 
-int ResourceManager::calcMemoryChilds(const int level) const
+int calcMemoryChilds(const int level)
 {
     int sz = 0;
     FOR_EACH (ResourceCIterator, it, mResources)
@@ -656,3 +666,38 @@ int ResourceManager::calcMemoryChilds(const int level) const
     }
     return sz;
 }
+
+int calcMemory(const int level)
+{
+    const int sumLocal = calcMemoryLocal();
+    const int sumChilds = calcMemoryChilds(0);
+    memoryManager.printMemory("resource manager",
+        level,
+        sumLocal,
+        sumChilds);
+    return sumLocal + sumChilds;
+}
+
+int size() noexcept2
+{
+    return CAST_S32(mResources.size());
+}
+
+#if defined(DEBUG_DUMP_LEAKS) || defined(UNITTESTS)
+Resources &getResources()
+{
+    return mResources;
+}
+
+Resources &getOrphanedResources()
+{
+    return mOrphanedResources;
+}
+
+const std::set<Resource*> &getDeletedResources()
+{
+    return mDeletedResources;
+}
+#endif  // defined(DEBUG_DUMP_LEAKS) || defined(UNITTESTS)
+
+}  // namespace ResourceManager
diff --git a/src/resources/resourcemanager/resourcemanager.h b/src/resources/resourcemanager/resourcemanager.h
index 6fff83df0..f279b2b7c 100644
--- a/src/resources/resourcemanager/resourcemanager.h
+++ b/src/resources/resourcemanager/resourcemanager.h
@@ -23,8 +23,6 @@
 #ifndef RESOURCES_RESOURCEMANAGER_RESOURCEMANAGER_H
 #define RESOURCES_RESOURCEMANAGER_RESOURCEMANAGER_H
 
-#include "resources/memorycounter.h"
-
 #include <map>
 #include <set>
 
@@ -35,124 +33,97 @@ class Resource;
 struct SDL_Surface;
 struct SDL_RWops;
 
-/**
- * A class for loading and managing resources.
- */
-class ResourceManager final : public MemoryCounter
+namespace ResourceManager
 {
-    friend class Resource;
-
-    public:
-        typedef Resource *(*loader)(SDL_RWops *rw,
-                                    const std::string &name);
-        typedef Resource *(&generator)(const void *const data);
-
-        ResourceManager();
-
-        A_DELETE_COPY(ResourceManager)
-
-        /**
-         * Destructor. Cleans up remaining resources, warning about resources
-         * that were still referenced.
-         */
-        ~ResourceManager();
+    typedef Resource *(*loader)(SDL_RWops *rw,
+                                const std::string &name);
+    typedef Resource *(&generator)(const void *const data);
 
-        /**
-         * Creates a resource and adds it to the resource map.
-         *
-         * @param idPath The resource identifier path.
-         * @param fun    A function for generating the resource.
-         * @param data   Extra parameters for the generator.
-         * @return A valid resource or <code>NULL</code> if the resource could
-         *         not be generated.
-         */
-        Resource *get(const std::string &idPath,
-                      generator fun,
-                      const void *const data) A_WARN_UNUSED;
+    typedef std::map<std::string, Resource*> Resources;
+    typedef Resources::iterator ResourceIterator;
+    typedef Resources::const_iterator ResourceCIterator;
 
-        Resource *getFromCache(const std::string &idPath) A_WARN_UNUSED;
+    /**
+     * Cleans up remaining resources, warning about resources
+     * that were still referenced.
+     */
+    void deleteResourceManager();
 
-        Resource *getFromCache(const std::string &filename,
-                               const int variant) A_WARN_UNUSED;
+    /**
+     * Creates a resource and adds it to the resource map.
+     *
+     * @param idPath The resource identifier path.
+     * @param fun    A function for generating the resource.
+     * @param data   Extra parameters for the generator.
+     * @return A valid resource or <code>NULL</code> if the resource could
+     *         not be generated.
+     */
+    Resource *get(const std::string &idPath,
+                  generator fun,
+                  const void *const data) A_WARN_UNUSED;
 
-        bool addResource(const std::string &idPath,
-                         Resource *const resource);
+    Resource *getFromCache(const std::string &idPath) A_WARN_UNUSED;
 
-        /**
-         * Releases a resource, placing it in the set of orphaned resources.
-         */
-        void release(Resource *const res);
+    Resource *getFromCache(const std::string &filename,
+                           const int variant) A_WARN_UNUSED;
 
-        void clearDeleted(const bool full = true);
+    bool addResource(const std::string &idPath,
+                     Resource *const resource);
 
-        void decRefDelete(Resource *const res);
+    /**
+     * Releases a resource, placing it in the set of orphaned resources.
+     */
+    void release(Resource *const res);
 
-        /**
-         * Move resource to deleted resources list.
-         */
-        void moveToDeleted(Resource *const res);
+    void clearDeleted(const bool full = true);
 
-        void scheduleDelete(SDL_Surface *const surface);
+    void decRefDelete(Resource *const res);
 
-        void clearScheduled();
+    /**
+     * Move resource to deleted resources list.
+     */
+    void moveToDeleted(Resource *const res);
 
-        /**
-         * Deletes the class instance if it exists.
-         */
-        static void deleteInstance();
+    void scheduleDelete(SDL_Surface *const surface);
 
-        int size() const noexcept2 A_WARN_UNUSED
-        { return CAST_S32(mResources.size()); }
+    void clearScheduled();
 
-        typedef std::map<std::string, Resource*> Resources;
-        typedef Resources::iterator ResourceIterator;
-        typedef Resources::const_iterator ResourceCIterator;
+    /**
+     * Deletes the class instance if it exists.
+     */
+    void deleteInstance();
 
-#ifdef DEBUG_DUMP_LEAKS
-        Resources* getResources() A_WARN_UNUSED
-        { return &mResources; }
+    int size() noexcept2 A_WARN_UNUSED;
 
-        Resources* getOrphanedResources() A_WARN_UNUSED
-        { return &mOrphanedResources; }
-#endif  // DEBUG_DUMP_LEAKS
+#if defined(DEBUG_DUMP_LEAKS) || defined(UNITTESTS)
+    Resources &getResources() A_WARN_UNUSED;
 
-        bool cleanOrphans(const bool always = false);
+    Resources &getOrphanedResources() A_WARN_UNUSED;
 
-        void cleanProtected();
+    const std::set<Resource*> &getDeletedResources() A_WARN_UNUSED;
+#endif  // defined(DEBUG_DUMP_LEAKS) || defined(UNITTESTS)
 
-        bool isInCache(const std::string &idPath) const A_WARN_UNUSED;
+    bool cleanOrphans(const bool always = false);
 
-        Resource *getTempResource(const std::string &idPath) A_WARN_UNUSED;
+    void cleanProtected();
 
-        void clearCache();
+    bool isInCache(const std::string &idPath) A_WARN_UNUSED;
 
-        int calcMemoryLocal() const override final;
+    Resource *getTempResource(const std::string &idPath) A_WARN_UNUSED;
 
-        int calcMemoryChilds(const int level) const override final;
+    void clearCache();
 
-        std::string getCounterName() const override final
-        { return "ResourceManager"; }
+    int calcMemoryLocal();
 
-        static void init();
+    int calcMemoryChilds(const int level);
 
-#ifndef UNITTESTS
-    private:
-#endif  // UNITTESTS
-        /**
-         * Deletes the resource after logging a cleanup message.
-         */
-        static void cleanUp(Resource *const resource);
+    int calcMemory(const int level);
 
-        static void logResource(const Resource *const res);
+    void cleanUp(Resource *const resource);
 
-        std::set<SDL_Surface*> deletedSurfaces;
-        Resources mResources;
-        Resources mOrphanedResources;
-        std::set<Resource*> mDeletedResources;
-        time_t mOldestOrphan;
-        bool mDestruction;
-};
+    void logResource(const Resource *const res);
 
-extern ResourceManager *resourceManager;
+    void logResources(const std::string &msg);
+}  // namespace ResourceManager
 
 #endif  // RESOURCES_RESOURCEMANAGER_RESOURCEMANAGER_H
diff --git a/src/resources/resourcemanager/resourcemanager_unittest.cc b/src/resources/resourcemanager/resourcemanager_unittest.cc
index c700bfbab..8c8d72868 100644
--- a/src/resources/resourcemanager/resourcemanager_unittest.cc
+++ b/src/resources/resourcemanager/resourcemanager_unittest.cc
@@ -20,6 +20,9 @@
 
 #include "catch.hpp"
 #include "client.h"
+#include "configmanager.h"
+#include "configuration.h"
+#include "dirs.h"
 #include "logger.h"
 #include "graphicsmanager.h"
 
@@ -27,6 +30,8 @@
 
 #include "fs/virtfs/virtfs.h"
 
+#include "gui/gui.h"
+
 #include "resources/sdlimagehelper.h"
 
 #include "resources/resourcemanager/resourcemanager.h"
@@ -84,6 +89,15 @@ namespace
 
 }  // namespace
 
+TEST_CASE("resourcemanager leak test1")
+{
+    logger = new Logger();
+    REQUIRE(gui == nullptr);
+    ResourceManager::cleanOrphans(true);
+    ResourceManager::deleteInstance();
+    delete2(logger);
+}
+
 TEST_CASE("resourcemanager", "resourcemanager")
 {
     setEnv("SDL_VIDEODRIVER", "dummy");
@@ -92,8 +106,6 @@ TEST_CASE("resourcemanager", "resourcemanager")
     XML::initXML();
     SDL_Init(SDL_INIT_VIDEO);
     logger = new Logger();
-    ResourceManager::init();
-    ResourceManager *safeResman = resourceManager;
     VirtFs::mountDirSilent("data", Append_false);
     VirtFs::mountDirSilent("../data", Append_false);
 
@@ -108,22 +120,40 @@ TEST_CASE("resourcemanager", "resourcemanager")
 #endif  // USE_SDL2
 
     ActorSprite::load();
-    resourceManager = new ResourceManager;
+
+    Dirs::initRootDir();
+    Dirs::initHomeDir();
+
+//    ConfigManager::initConfiguration();
+//    getConfigDefaults2(config.getDefaultValues());
+
+    while (ResourceManager::cleanOrphans(true))
+        continue;
+
     testResouceCounter = 0;
+    const size_t resSize = ResourceManager::getResources().size();
+
+    SECTION("resourcemanager get 0")
+    {
+        REQUIRE(testResouceCounter == 0);
+        REQUIRE(ResourceManager::getResources().size() == 0 + resSize);
+        REQUIRE(ResourceManager::getOrphanedResources().empty() == true);
+        REQUIRE(ResourceManager::getDeletedResources().empty() == true);
+    }
 
     SECTION("resourcemanager get 1")
     {
         REQUIRE(testResouceCounter == 0);
         TestLoader rl = { "test1" };
-        Resource *res = resourceManager->get("test1",
+        Resource *res = ResourceManager::get("test1",
             TestLoader::load, &rl);
         REQUIRE(testResouceCounter == 1);
         REQUIRE(res != nullptr);
         REQUIRE(res->getRefCount() == 1);
-        REQUIRE(resourceManager->mResources.size() == 1);
-        REQUIRE(resourceManager->mResources["test1"] == res);
-        REQUIRE(resourceManager->mOrphanedResources.empty() == true);
-        REQUIRE(resourceManager->mDeletedResources.empty() == true);
+        REQUIRE(ResourceManager::getResources().size() == 1 + resSize);
+        REQUIRE(ResourceManager::getResources()["test1"] == res);
+        REQUIRE(ResourceManager::getOrphanedResources().empty() == true);
+        REQUIRE(ResourceManager::getDeletedResources().empty() == true);
         res->decRef();
         REQUIRE(res->getRefCount() == 0);
     }
@@ -131,18 +161,18 @@ TEST_CASE("resourcemanager", "resourcemanager")
     SECTION("resourcemanager get 2")
     {
         TestLoader rl = { "test1" };
-        Resource *const res = resourceManager->get("test1",
+        Resource *const res = ResourceManager::get("test1",
             TestLoader::load, &rl);
         REQUIRE(res != nullptr);
         REQUIRE(testResouceCounter == 1);
         REQUIRE(res->getRefCount() == 1);
         res->setSource("source 1");
         REQUIRE(res->getSource() == "source 1");
-        REQUIRE(resourceManager->mResources.size() == 1);
-        REQUIRE(resourceManager->mResources["test1"] == res);
-        REQUIRE(resourceManager->mOrphanedResources.empty() == true);
-        REQUIRE(resourceManager->mDeletedResources.empty() == true);
-        Resource *const res2 = resourceManager->get("test1",
+        REQUIRE(ResourceManager::getResources().size() == 1 + resSize);
+        REQUIRE(ResourceManager::getResources()["test1"] == res);
+        REQUIRE(ResourceManager::getOrphanedResources().empty() == true);
+        REQUIRE(ResourceManager::getDeletedResources().empty() == true);
+        Resource *const res2 = ResourceManager::get("test1",
             TestLoader::load, &rl);
         REQUIRE(res2 != nullptr);
         REQUIRE(testResouceCounter == 1);
@@ -150,10 +180,10 @@ TEST_CASE("resourcemanager", "resourcemanager")
         REQUIRE(res2->getRefCount() == 2);
         REQUIRE(res->getIdPath() == res2->getIdPath());
         REQUIRE(res2->getSource() == "source 1");
-        REQUIRE(resourceManager->mResources.size() == 1);
-        REQUIRE(resourceManager->mResources["test1"] == res2);
-        REQUIRE(resourceManager->mOrphanedResources.empty() == true);
-        REQUIRE(resourceManager->mDeletedResources.empty() == true);
+        REQUIRE(ResourceManager::getResources().size() == 1 + resSize);
+        REQUIRE(ResourceManager::getResources()["test1"] == res2);
+        REQUIRE(ResourceManager::getOrphanedResources().empty() == true);
+        REQUIRE(ResourceManager::getDeletedResources().empty() == true);
         res->decRef();
         res2->decRef();
         REQUIRE(res->getRefCount() == 0);
@@ -162,53 +192,53 @@ TEST_CASE("resourcemanager", "resourcemanager")
     SECTION("resourcemanager get 3")
     {
         TestLoader rl = { "test1" };
-        Resource *res = resourceManager->get("test1",
+        Resource *res = ResourceManager::get("test1",
             TestLoader::load, &rl);
         REQUIRE(res != nullptr);
         REQUIRE(testResouceCounter == 1);
         REQUIRE(res->getRefCount() == 1);
-        REQUIRE(resourceManager->mResources.size() == 1);
-        REQUIRE(resourceManager->mResources["test1"] == res);
-        REQUIRE(resourceManager->mOrphanedResources.empty() == true);
-        REQUIRE(resourceManager->mDeletedResources.empty() == true);
+        REQUIRE(ResourceManager::getResources().size() == 1 + resSize);
+        REQUIRE(ResourceManager::getResources()["test1"] == res);
+        REQUIRE(ResourceManager::getOrphanedResources().empty() == true);
+        REQUIRE(ResourceManager::getDeletedResources().empty() == true);
         res->setSource("source 1");
         res->decRef();
-        REQUIRE(resourceManager->mResources.size() == 0);
-        REQUIRE(resourceManager->mOrphanedResources["test1"] == res);
-        REQUIRE(resourceManager->mDeletedResources.empty() == true);
+        REQUIRE(ResourceManager::getResources().size() == 0 + resSize);
+        REQUIRE(ResourceManager::getOrphanedResources()["test1"] == res);
+        REQUIRE(ResourceManager::getDeletedResources().empty() == true);
         REQUIRE(res->getRefCount() == 0);
     }
 
     SECTION("resourcemanager get 4")
     {
         TestLoader rl = { "test1" };
-        Resource *res = resourceManager->get("test1",
+        Resource *res = ResourceManager::get("test1",
             TestLoader::load, &rl);
         REQUIRE(res != nullptr);
         REQUIRE(testResouceCounter == 1);
         REQUIRE(res->getRefCount() == 1);
-        REQUIRE(resourceManager->mResources.size() == 1);
-        REQUIRE(resourceManager->mResources["test1"] == res);
-        REQUIRE(resourceManager->mOrphanedResources.empty() == true);
-        REQUIRE(resourceManager->mDeletedResources.empty() == true);
+        REQUIRE(ResourceManager::getResources().size() == 1 + resSize);
+        REQUIRE(ResourceManager::getResources()["test1"] == res);
+        REQUIRE(ResourceManager::getOrphanedResources().empty() == true);
+        REQUIRE(ResourceManager::getDeletedResources().empty() == true);
         res->setSource("source 1");
         res->decRef();
         REQUIRE(res->getRefCount() == 0);
-        REQUIRE(resourceManager->mResources.size() == 0);
-        REQUIRE(resourceManager->mOrphanedResources["test1"] == res);
-        REQUIRE(resourceManager->mDeletedResources.empty() == true);
+        REQUIRE(ResourceManager::getResources().size() == 0 + resSize);
+        REQUIRE(ResourceManager::getOrphanedResources()["test1"] == res);
+        REQUIRE(ResourceManager::getDeletedResources().empty() == true);
 
-        Resource *const res2 = resourceManager->get("test1",
+        Resource *const res2 = ResourceManager::get("test1",
             TestLoader::load, &rl);
         REQUIRE(res2 != nullptr);
         REQUIRE(testResouceCounter == 1);
         REQUIRE(res2->getRefCount() == 1);
         REQUIRE(res->getIdPath() == res2->getIdPath());
         REQUIRE(res2->getSource() == "source 1");
-        REQUIRE(resourceManager->mResources.size() == 1);
-        REQUIRE(resourceManager->mResources["test1"] == res2);
-        REQUIRE(resourceManager->mOrphanedResources.empty() == true);
-        REQUIRE(resourceManager->mDeletedResources.empty() == true);
+        REQUIRE(ResourceManager::getResources().size() == 1 + resSize);
+        REQUIRE(ResourceManager::getResources()["test1"] == res2);
+        REQUIRE(ResourceManager::getOrphanedResources().empty() == true);
+        REQUIRE(ResourceManager::getDeletedResources().empty() == true);
         res2->decRef();
         REQUIRE(res->getRefCount() == 0);
     }
@@ -216,43 +246,43 @@ TEST_CASE("resourcemanager", "resourcemanager")
     SECTION("resourcemanager get 5")
     {
         TestLoader rl = { "test1" };
-        Resource *res = resourceManager->get("test1",
+        Resource *res = ResourceManager::get("test1",
             TestLoader::load, &rl);
-        REQUIRE(resourceManager->isInCache("test1") == true);
+        REQUIRE(ResourceManager::isInCache("test1") == true);
         REQUIRE(res != nullptr);
         REQUIRE(testResouceCounter == 1);
         REQUIRE(res->getRefCount() == 1);
-        REQUIRE(resourceManager->mResources.size() == 1);
-        REQUIRE(resourceManager->mResources["test1"] == res);
-        REQUIRE(resourceManager->mOrphanedResources.empty() == true);
-        REQUIRE(resourceManager->mDeletedResources.empty() == true);
+        REQUIRE(ResourceManager::getResources().size() == 1 + resSize);
+        REQUIRE(ResourceManager::getResources()["test1"] == res);
+        REQUIRE(ResourceManager::getOrphanedResources().empty() == true);
+        REQUIRE(ResourceManager::getDeletedResources().empty() == true);
         res->setSource("source 1");
         res->decRef();
         REQUIRE(res->getRefCount() == 0);
-        REQUIRE(resourceManager->mResources.empty() == true);
-        REQUIRE(resourceManager->mOrphanedResources.size() == 1);
-        REQUIRE(resourceManager->mOrphanedResources["test1"] == res);
-        REQUIRE(resourceManager->mDeletedResources.empty() == true);
+        REQUIRE(ResourceManager::getResources().size() == 0 + resSize);
+        REQUIRE(ResourceManager::getOrphanedResources().size() == 1);
+        REQUIRE(ResourceManager::getOrphanedResources()["test1"] == res);
+        REQUIRE(ResourceManager::getDeletedResources().empty() == true);
 
         sleep(33);
-        resourceManager->cleanOrphans();
-        REQUIRE(resourceManager->isInCache("test1") == false);
+        ResourceManager::cleanOrphans();
+        REQUIRE(ResourceManager::isInCache("test1") == false);
         REQUIRE(testResouceCounter == 0);
-        REQUIRE(resourceManager->mResources.empty() == true);
-        REQUIRE(resourceManager->mOrphanedResources.empty() == true);
-        REQUIRE(resourceManager->mDeletedResources.empty() == true);
+        REQUIRE(ResourceManager::getResources().size() == 0 + resSize);
+        REQUIRE(ResourceManager::getOrphanedResources().empty() == true);
+        REQUIRE(ResourceManager::getDeletedResources().empty() == true);
 
-        Resource *const res2 = resourceManager->get("test1",
+        Resource *const res2 = ResourceManager::get("test1",
             TestLoader::load, &rl);
-        REQUIRE(resourceManager->isInCache("test1") == true);
+        REQUIRE(ResourceManager::isInCache("test1") == true);
         REQUIRE(res2 != nullptr);
         REQUIRE(testResouceCounter == 1);
         REQUIRE(res2->getRefCount() == 1);
         REQUIRE(res2->getSource() == "");
-        REQUIRE(resourceManager->mResources.size() == 1);
-        REQUIRE(resourceManager->mResources["test1"] == res2);
-        REQUIRE(resourceManager->mOrphanedResources.empty() == true);
-        REQUIRE(resourceManager->mDeletedResources.empty() == true);
+        REQUIRE(ResourceManager::getResources().size() == 1 + resSize);
+        REQUIRE(ResourceManager::getResources()["test1"] == res2);
+        REQUIRE(ResourceManager::getOrphanedResources().empty() == true);
+        REQUIRE(ResourceManager::getDeletedResources().empty() == true);
         res2->decRef();
         REQUIRE(res2->getRefCount() == 0);
     }
@@ -260,28 +290,28 @@ TEST_CASE("resourcemanager", "resourcemanager")
     SECTION("resourcemanager get 6")
     {
         TestLoader rl = { "test1" };
-        Resource *res = resourceManager->get("test1",
+        Resource *res = ResourceManager::get("test1",
             TestLoader::load, &rl);
         REQUIRE(res != nullptr);
         REQUIRE(testResouceCounter == 1);
         REQUIRE(res->getRefCount() == 1);
         res->setSource("source 1");
-        REQUIRE(resourceManager->mResources.size() == 1);
-        REQUIRE(resourceManager->mResources["test1"] == res);
-        REQUIRE(resourceManager->mOrphanedResources.empty() == true);
-        REQUIRE(resourceManager->mDeletedResources.empty() == true);
+        REQUIRE(ResourceManager::getResources().size() == 1 + resSize);
+        REQUIRE(ResourceManager::getResources()["test1"] == res);
+        REQUIRE(ResourceManager::getOrphanedResources().empty() == true);
+        REQUIRE(ResourceManager::getDeletedResources().empty() == true);
 
-        Resource *const res2 = resourceManager->get("test2",
+        Resource *const res2 = ResourceManager::get("test2",
             TestLoader::load, &rl);
         REQUIRE(res2 != nullptr);
         REQUIRE(testResouceCounter == 2);
         REQUIRE(res2->getRefCount() == 1);
         REQUIRE(res2->getSource() == "");
-        REQUIRE(resourceManager->mResources.size() == 2);
-        REQUIRE(resourceManager->mResources["test1"] == res);
-        REQUIRE(resourceManager->mResources["test2"] == res2);
-        REQUIRE(resourceManager->mOrphanedResources.empty() == true);
-        REQUIRE(resourceManager->mDeletedResources.empty() == true);
+        REQUIRE(ResourceManager::getResources().size() == 2 + resSize);
+        REQUIRE(ResourceManager::getResources()["test1"] == res);
+        REQUIRE(ResourceManager::getResources()["test2"] == res2);
+        REQUIRE(ResourceManager::getOrphanedResources().empty() == true);
+        REQUIRE(ResourceManager::getDeletedResources().empty() == true);
         res->decRef();
         res2->decRef();
         REQUIRE(res->getRefCount() == 0);
@@ -291,25 +321,25 @@ TEST_CASE("resourcemanager", "resourcemanager")
     SECTION("resourcemanager getFromCache 1")
     {
         TestLoader rl = { "test1" };
-        Resource *res = resourceManager->get("test1",
+        Resource *res = ResourceManager::get("test1",
             TestLoader::load, &rl);
         REQUIRE(res != nullptr);
         REQUIRE(testResouceCounter == 1);
         REQUIRE(res->getRefCount() == 1);
-        REQUIRE(resourceManager->mResources.size() == 1);
-        REQUIRE(resourceManager->mResources["test1"] == res);
-        REQUIRE(resourceManager->mOrphanedResources.empty() == true);
-        REQUIRE(resourceManager->mDeletedResources.empty() == true);
-        Resource *const res2 = resourceManager->getFromCache("test1");
+        REQUIRE(ResourceManager::getResources().size() == 1 + resSize);
+        REQUIRE(ResourceManager::getResources()["test1"] == res);
+        REQUIRE(ResourceManager::getOrphanedResources().empty() == true);
+        REQUIRE(ResourceManager::getDeletedResources().empty() == true);
+        Resource *const res2 = ResourceManager::getFromCache("test1");
         REQUIRE(res2 != nullptr);
         REQUIRE(testResouceCounter == 1);
         REQUIRE(res2->getRefCount() == 2);
         REQUIRE(res == res2);
         REQUIRE(res2->getSource() == "");
-        REQUIRE(resourceManager->mResources.size() == 1);
-        REQUIRE(resourceManager->mResources["test1"] == res2);
-        REQUIRE(resourceManager->mOrphanedResources.empty() == true);
-        REQUIRE(resourceManager->mDeletedResources.empty() == true);
+        REQUIRE(ResourceManager::getResources().size() == 1 + resSize);
+        REQUIRE(ResourceManager::getResources()["test1"] == res2);
+        REQUIRE(ResourceManager::getOrphanedResources().empty() == true);
+        REQUIRE(ResourceManager::getDeletedResources().empty() == true);
         res->decRef();
         res->decRef();
         REQUIRE(res->getRefCount() == 0);
@@ -318,27 +348,27 @@ TEST_CASE("resourcemanager", "resourcemanager")
     SECTION("resourcemanager getFromCache 2")
     {
         TestLoader rl = { "test1" };
-        Resource *res = resourceManager->get("test1",
+        Resource *res = ResourceManager::get("test1",
             TestLoader::load, &rl);
         REQUIRE(res != nullptr);
         REQUIRE(testResouceCounter == 1);
         REQUIRE(res->getRefCount() == 1);
-        REQUIRE(resourceManager->mResources.size() == 1);
-        REQUIRE(resourceManager->mResources["test1"] == res);
-        REQUIRE(resourceManager->mOrphanedResources.empty() == true);
-        REQUIRE(resourceManager->mDeletedResources.empty() == true);
+        REQUIRE(ResourceManager::getResources().size() == 1 + resSize);
+        REQUIRE(ResourceManager::getResources()["test1"] == res);
+        REQUIRE(ResourceManager::getOrphanedResources().empty() == true);
+        REQUIRE(ResourceManager::getDeletedResources().empty() == true);
         res->decRef();
         REQUIRE(res->getRefCount() == 0);
-        Resource *const res2 = resourceManager->getFromCache("test1");
+        Resource *const res2 = ResourceManager::getFromCache("test1");
         REQUIRE(res2 != nullptr);
         REQUIRE(testResouceCounter == 1);
         REQUIRE(res2->getRefCount() == 1);
         REQUIRE(res == res2);
         REQUIRE(res2->getSource() == "");
-        REQUIRE(resourceManager->mResources.size() == 1);
-        REQUIRE(resourceManager->mResources["test1"] == res2);
-        REQUIRE(resourceManager->mOrphanedResources.empty() == true);
-        REQUIRE(resourceManager->mDeletedResources.empty() == true);
+        REQUIRE(ResourceManager::getResources().size() == 1 + resSize);
+        REQUIRE(ResourceManager::getResources()["test1"] == res2);
+        REQUIRE(ResourceManager::getOrphanedResources().empty() == true);
+        REQUIRE(ResourceManager::getDeletedResources().empty() == true);
         res->decRef();
         REQUIRE(res->getRefCount() == 0);
     }
@@ -346,31 +376,31 @@ TEST_CASE("resourcemanager", "resourcemanager")
     SECTION("resourcemanager getFromCache 3")
     {
         TestLoader rl = { "test1" };
-        Resource *res = resourceManager->get("test1",
+        Resource *res = ResourceManager::get("test1",
             TestLoader::load, &rl);
         REQUIRE(res != nullptr);
         REQUIRE(testResouceCounter == 1);
         REQUIRE(res->getRefCount() == 1);
         res->setSource("source 1");
-        REQUIRE(resourceManager->mResources.size() == 1);
-        REQUIRE(resourceManager->mResources["test1"] == res);
-        REQUIRE(resourceManager->mOrphanedResources.empty() == true);
-        REQUIRE(resourceManager->mDeletedResources.empty() == true);
+        REQUIRE(ResourceManager::getResources().size() == 1 + resSize);
+        REQUIRE(ResourceManager::getResources()["test1"] == res);
+        REQUIRE(ResourceManager::getOrphanedResources().empty() == true);
+        REQUIRE(ResourceManager::getDeletedResources().empty() == true);
 
-        Resource *const res2 = resourceManager->get("test2",
+        Resource *const res2 = ResourceManager::get("test2",
             TestLoader::load, &rl);
         REQUIRE(res2 != nullptr);
         REQUIRE(testResouceCounter == 2);
         REQUIRE(res2->getRefCount() == 1);
         REQUIRE(res2->getSource() == "");
-        REQUIRE(resourceManager->mResources.size() == 2);
-        REQUIRE(resourceManager->mResources["test1"] == res);
-        REQUIRE(resourceManager->mResources["test2"] == res2);
-        REQUIRE(resourceManager->mOrphanedResources.empty() == true);
-        REQUIRE(resourceManager->mDeletedResources.empty() == true);
-
-        Resource *const resC = resourceManager->getFromCache("test1");
-        Resource *const res2C = resourceManager->getFromCache("test2");
+        REQUIRE(ResourceManager::getResources().size() == 2 + resSize);
+        REQUIRE(ResourceManager::getResources()["test1"] == res);
+        REQUIRE(ResourceManager::getResources()["test2"] == res2);
+        REQUIRE(ResourceManager::getOrphanedResources().empty() == true);
+        REQUIRE(ResourceManager::getDeletedResources().empty() == true);
+
+        Resource *const resC = ResourceManager::getFromCache("test1");
+        Resource *const res2C = ResourceManager::getFromCache("test2");
         REQUIRE(resC != nullptr);
         REQUIRE(res2C != nullptr);
         REQUIRE(testResouceCounter == 2);
@@ -378,11 +408,11 @@ TEST_CASE("resourcemanager", "resourcemanager")
         REQUIRE(res2 == res2C);
         REQUIRE(resC->getRefCount() == 2);
         REQUIRE(res2C->getRefCount() == 2);
-        REQUIRE(resourceManager->mResources.size() == 2);
-        REQUIRE(resourceManager->mResources["test1"] == resC);
-        REQUIRE(resourceManager->mResources["test2"] == res2C);
-        REQUIRE(resourceManager->mOrphanedResources.empty() == true);
-        REQUIRE(resourceManager->mDeletedResources.empty() == true);
+        REQUIRE(ResourceManager::getResources().size() == 2 + resSize);
+        REQUIRE(ResourceManager::getResources()["test1"] == resC);
+        REQUIRE(ResourceManager::getResources()["test2"] == res2C);
+        REQUIRE(ResourceManager::getOrphanedResources().empty() == true);
+        REQUIRE(ResourceManager::getDeletedResources().empty() == true);
 
         res->decRef();
         res->decRef();
@@ -397,13 +427,13 @@ TEST_CASE("resourcemanager", "resourcemanager")
         REQUIRE(testResouceCounter == 0);
         Resource *res = new TestResource();
         REQUIRE(testResouceCounter == 1);
-        resourceManager->addResource("test1", res);
+        ResourceManager::addResource("test1", res);
         REQUIRE(res != nullptr);
         REQUIRE(res->getRefCount() == 1);
-        REQUIRE(resourceManager->mResources.size() == 1);
-        REQUIRE(resourceManager->mResources["test1"] == res);
-        REQUIRE(resourceManager->mOrphanedResources.empty() == true);
-        REQUIRE(resourceManager->mDeletedResources.empty() == true);
+        REQUIRE(ResourceManager::getResources().size() == 1 + resSize);
+        REQUIRE(ResourceManager::getResources()["test1"] == res);
+        REQUIRE(ResourceManager::getOrphanedResources().empty() == true);
+        REQUIRE(ResourceManager::getDeletedResources().empty() == true);
         res->decRef();
         REQUIRE(res->getRefCount() == 0);
     }
@@ -412,18 +442,18 @@ TEST_CASE("resourcemanager", "resourcemanager")
     {
         REQUIRE(testResouceCounter == 0);
         TestLoader rl = { "test1" };
-        REQUIRE(resourceManager->isInCache("test1") == false);
-        Resource *res = resourceManager->get("test1",
+        REQUIRE(ResourceManager::isInCache("test1") == false);
+        Resource *res = ResourceManager::get("test1",
             TestLoader::load, &rl);
-        REQUIRE(resourceManager->isInCache("test1") == true);
-        REQUIRE(resourceManager->isInCache("test2") == false);
+        REQUIRE(ResourceManager::isInCache("test1") == true);
+        REQUIRE(ResourceManager::isInCache("test2") == false);
         REQUIRE(testResouceCounter == 1);
         REQUIRE(res != nullptr);
         REQUIRE(res->getRefCount() == 1);
-        REQUIRE(resourceManager->mResources.size() == 1);
-        REQUIRE(resourceManager->mResources["test1"] == res);
-        REQUIRE(resourceManager->mOrphanedResources.empty() == true);
-        REQUIRE(resourceManager->mDeletedResources.empty() == true);
+        REQUIRE(ResourceManager::getResources().size() == 1 + resSize);
+        REQUIRE(ResourceManager::getResources()["test1"] == res);
+        REQUIRE(ResourceManager::getOrphanedResources().empty() == true);
+        REQUIRE(ResourceManager::getDeletedResources().empty() == true);
         res->decRef();
         REQUIRE(res->getRefCount() == 0);
     }
@@ -431,27 +461,27 @@ TEST_CASE("resourcemanager", "resourcemanager")
     SECTION("resourcemanager getTempResource 1")
     {
         TestLoader rl = { "test1" };
-        REQUIRE(resourceManager->getTempResource("test1") == nullptr);
-        Resource *res = resourceManager->get("test1",
+        REQUIRE(ResourceManager::getTempResource("test1") == nullptr);
+        Resource *res = ResourceManager::get("test1",
             TestLoader::load, &rl);
         REQUIRE(res != nullptr);
         REQUIRE(testResouceCounter == 1);
         REQUIRE(res->getRefCount() == 1);
-        REQUIRE(resourceManager->mResources.size() == 1);
-        REQUIRE(resourceManager->mResources["test1"] == res);
-        REQUIRE(resourceManager->mOrphanedResources.empty() == true);
-        REQUIRE(resourceManager->mDeletedResources.empty() == true);
-        Resource *const res2 = resourceManager->getTempResource("test1");
-        REQUIRE(resourceManager->getTempResource("test2") == nullptr);
+        REQUIRE(ResourceManager::getResources().size() == 1 + resSize);
+        REQUIRE(ResourceManager::getResources()["test1"] == res);
+        REQUIRE(ResourceManager::getOrphanedResources().empty() == true);
+        REQUIRE(ResourceManager::getDeletedResources().empty() == true);
+        Resource *const res2 = ResourceManager::getTempResource("test1");
+        REQUIRE(ResourceManager::getTempResource("test2") == nullptr);
         REQUIRE(res2 != nullptr);
         REQUIRE(testResouceCounter == 1);
         REQUIRE(res2->getRefCount() == 1);
         REQUIRE(res == res2);
         REQUIRE(res2->getSource() == "");
-        REQUIRE(resourceManager->mResources.size() == 1);
-        REQUIRE(resourceManager->mResources["test1"] == res2);
-        REQUIRE(resourceManager->mOrphanedResources.empty() == true);
-        REQUIRE(resourceManager->mDeletedResources.empty() == true);
+        REQUIRE(ResourceManager::getResources().size() == 1 + resSize);
+        REQUIRE(ResourceManager::getResources()["test1"] == res2);
+        REQUIRE(ResourceManager::getOrphanedResources().empty() == true);
+        REQUIRE(ResourceManager::getDeletedResources().empty() == true);
         res->decRef();
         REQUIRE(res->getRefCount() == 0);
     }
@@ -460,42 +490,42 @@ TEST_CASE("resourcemanager", "resourcemanager")
     {
         REQUIRE(testResouceCounter == 0);
         TestLoader rl = { "test1" };
-        Resource *res = resourceManager->get("test1",
+        Resource *res = ResourceManager::get("test1",
             TestLoader::load, &rl);
         REQUIRE(testResouceCounter == 1);
         REQUIRE(res != nullptr);
         REQUIRE(res->getRefCount() == 1);
-        REQUIRE(resourceManager->mResources.size() == 1);
-        REQUIRE(resourceManager->mResources["test1"] == res);
-        REQUIRE(resourceManager->mOrphanedResources.empty() == true);
-        REQUIRE(resourceManager->mDeletedResources.empty() == true);
-        resourceManager->moveToDeleted(res);
+        REQUIRE(ResourceManager::getResources().size() == 1 + resSize);
+        REQUIRE(ResourceManager::getResources()["test1"] == res);
+        REQUIRE(ResourceManager::getOrphanedResources().empty() == true);
+        REQUIRE(ResourceManager::getDeletedResources().empty() == true);
+        ResourceManager::moveToDeleted(res);
         REQUIRE(testResouceCounter == 0);
-        REQUIRE(resourceManager->mResources.empty() == true);
-        REQUIRE(resourceManager->mOrphanedResources.empty() == true);
-        REQUIRE(resourceManager->mDeletedResources.empty() == true);
+        REQUIRE(ResourceManager::getResources().size() == 0 + resSize);
+        REQUIRE(ResourceManager::getOrphanedResources().empty() == true);
+        REQUIRE(ResourceManager::getDeletedResources().empty() == true);
     }
 
     SECTION("resourcemanager moveToDeleted 2")
     {
         REQUIRE(testResouceCounter == 0);
         TestLoader rl = { "test1" };
-        Resource *res = resourceManager->get("test1",
+        Resource *res = ResourceManager::get("test1",
             TestLoader::load, &rl);
         res->incRef();
         REQUIRE(testResouceCounter == 1);
         REQUIRE(res != nullptr);
         REQUIRE(res->getRefCount() == 2);
-        REQUIRE(resourceManager->mResources.size() == 1);
-        REQUIRE(resourceManager->mResources["test1"] == res);
-        REQUIRE(resourceManager->mOrphanedResources.empty() == true);
-        REQUIRE(resourceManager->mDeletedResources.empty() == true);
-        resourceManager->moveToDeleted(res);
+        REQUIRE(ResourceManager::getResources().size() == 1 + resSize);
+        REQUIRE(ResourceManager::getResources()["test1"] == res);
+        REQUIRE(ResourceManager::getOrphanedResources().empty() == true);
+        REQUIRE(ResourceManager::getDeletedResources().empty() == true);
+        ResourceManager::moveToDeleted(res);
         REQUIRE(testResouceCounter == 1);
         REQUIRE(res->getRefCount() == 1);
-        REQUIRE(resourceManager->mResources.empty() == true);
-        REQUIRE(resourceManager->mOrphanedResources.empty() == true);
-        REQUIRE(resourceManager->mDeletedResources.size() == 1);
+        REQUIRE(ResourceManager::getResources().size() == 0 + resSize);
+        REQUIRE(ResourceManager::getOrphanedResources().empty() == true);
+        REQUIRE(ResourceManager::getDeletedResources().size() == 1);
         res->decRef();
     }
 
@@ -503,96 +533,96 @@ TEST_CASE("resourcemanager", "resourcemanager")
     {
         REQUIRE(testResouceCounter == 0);
         TestLoader rl = { "test1" };
-        Resource *res = resourceManager->get("test1",
+        Resource *res = ResourceManager::get("test1",
             TestLoader::load, &rl);
         REQUIRE(testResouceCounter == 1);
         REQUIRE(res != nullptr);
         REQUIRE(res->getRefCount() == 1);
-        REQUIRE(resourceManager->mResources.size() == 1);
-        REQUIRE(resourceManager->mResources["test1"] == res);
-        REQUIRE(resourceManager->mOrphanedResources.empty() == true);
-        REQUIRE(resourceManager->mDeletedResources.empty() == true);
+        REQUIRE(ResourceManager::getResources().size() == 1 + resSize);
+        REQUIRE(ResourceManager::getResources()["test1"] == res);
+        REQUIRE(ResourceManager::getOrphanedResources().empty() == true);
+        REQUIRE(ResourceManager::getDeletedResources().empty() == true);
 
         res->decRef();
         REQUIRE(testResouceCounter == 1);
         REQUIRE(res->getRefCount() == 0);
-        REQUIRE(resourceManager->mResources.empty() == true);
-        REQUIRE(resourceManager->mOrphanedResources.size() == 1);
-        REQUIRE(resourceManager->mOrphanedResources["test1"] == res);
-        REQUIRE(resourceManager->mDeletedResources.empty() == true);
+        REQUIRE(ResourceManager::getResources().size() == 0 + resSize);
+        REQUIRE(ResourceManager::getOrphanedResources().size() == 1);
+        REQUIRE(ResourceManager::getOrphanedResources()["test1"] == res);
+        REQUIRE(ResourceManager::getDeletedResources().empty() == true);
 
-        resourceManager->moveToDeleted(res);
+        ResourceManager::moveToDeleted(res);
         REQUIRE(testResouceCounter == 0);
-        REQUIRE(resourceManager->mResources.empty() == true);
-        REQUIRE(resourceManager->mOrphanedResources.empty() == true);
-        REQUIRE(resourceManager->mDeletedResources.empty() == true);
+        REQUIRE(ResourceManager::getResources().size() == 0 + resSize);
+        REQUIRE(ResourceManager::getOrphanedResources().empty() == true);
+        REQUIRE(ResourceManager::getDeletedResources().empty() == true);
     }
 
     SECTION("resourcemanager decRefDelete 1")
     {
         REQUIRE(testResouceCounter == 0);
         TestLoader rl = { "test1" };
-        Resource *res = resourceManager->get("test1",
+        Resource *res = ResourceManager::get("test1",
             TestLoader::load, &rl);
         REQUIRE(testResouceCounter == 1);
         REQUIRE(res != nullptr);
         REQUIRE(res->getRefCount() == 1);
-        REQUIRE(resourceManager->mResources.size() == 1);
-        REQUIRE(resourceManager->mResources["test1"] == res);
-        REQUIRE(resourceManager->mOrphanedResources.empty() == true);
-        REQUIRE(resourceManager->mDeletedResources.empty() == true);
+        REQUIRE(ResourceManager::getResources().size() == 1 + resSize);
+        REQUIRE(ResourceManager::getResources()["test1"] == res);
+        REQUIRE(ResourceManager::getOrphanedResources().empty() == true);
+        REQUIRE(ResourceManager::getDeletedResources().empty() == true);
 
-        resourceManager->decRefDelete(res);
+        ResourceManager::decRefDelete(res);
         REQUIRE(testResouceCounter == 0);
-        REQUIRE(resourceManager->mResources.empty() == true);
-        REQUIRE(resourceManager->mOrphanedResources.empty() == true);
-        REQUIRE(resourceManager->mDeletedResources.empty() == true);
+        REQUIRE(ResourceManager::getResources().size() == 0 + resSize);
+        REQUIRE(ResourceManager::getOrphanedResources().empty() == true);
+        REQUIRE(ResourceManager::getDeletedResources().empty() == true);
     }
 
     SECTION("resourcemanager cleanUp 1")
     {
         REQUIRE(testResouceCounter == 0);
         TestLoader rl = { "test1" };
-        Resource *res = resourceManager->get("test1",
+        Resource *res = ResourceManager::get("test1",
             TestLoader::load, &rl);
         REQUIRE(testResouceCounter == 1);
         REQUIRE(res != nullptr);
         REQUIRE(res->getRefCount() == 1);
-        REQUIRE(resourceManager->mResources.size() == 1);
-        REQUIRE(resourceManager->mResources["test1"] == res);
-        REQUIRE(resourceManager->mOrphanedResources.empty() == true);
-        REQUIRE(resourceManager->mDeletedResources.empty() == true);
+        REQUIRE(ResourceManager::getResources().size() == 1 + resSize);
+        REQUIRE(ResourceManager::getResources()["test1"] == res);
+        REQUIRE(ResourceManager::getOrphanedResources().empty() == true);
+        REQUIRE(ResourceManager::getDeletedResources().empty() == true);
         res->decRef();
 
-        resourceManager->cleanUp(res);
+        ResourceManager::cleanUp(res);
         REQUIRE(testResouceCounter == 0);
-        REQUIRE(resourceManager->mResources.empty() == true);
-        REQUIRE(resourceManager->mOrphanedResources.size() == 1);
-        REQUIRE(resourceManager->mDeletedResources.empty() == true);
-        resourceManager->mOrphanedResources.clear();
+        REQUIRE(ResourceManager::getResources().size() == 0 + resSize);
+        REQUIRE(ResourceManager::getOrphanedResources().size() == 1);
+        REQUIRE(ResourceManager::getDeletedResources().empty() == true);
+        ResourceManager::getOrphanedResources().clear();
     }
 
     SECTION("resourcemanager cleanProtected 1")
     {
         REQUIRE(testResouceCounter == 0);
         TestLoader rl = { "test1" };
-        Resource *res = resourceManager->get("test1",
+        Resource *res = ResourceManager::get("test1",
             TestLoader::load, &rl);
         REQUIRE(testResouceCounter == 1);
         REQUIRE(res != nullptr);
         REQUIRE(res->getRefCount() == 1);
-        REQUIRE(resourceManager->mResources.size() == 1);
-        REQUIRE(resourceManager->mResources["test1"] == res);
-        REQUIRE(resourceManager->mOrphanedResources.empty() == true);
-        REQUIRE(resourceManager->mDeletedResources.empty() == true);
+        REQUIRE(ResourceManager::getResources().size() == 1 + resSize);
+        REQUIRE(ResourceManager::getResources()["test1"] == res);
+        REQUIRE(ResourceManager::getOrphanedResources().empty() == true);
+        REQUIRE(ResourceManager::getDeletedResources().empty() == true);
         res->setProtected(true);
-        resourceManager->cleanProtected();
+        ResourceManager::cleanProtected();
 
         REQUIRE(testResouceCounter == 1);
-        REQUIRE(resourceManager->mResources.empty() == true);
-        REQUIRE(resourceManager->mOrphanedResources.size() == 1);
-        REQUIRE(resourceManager->mOrphanedResources["test1"] == res);
-        REQUIRE(resourceManager->mDeletedResources.empty() == true);
+        REQUIRE(ResourceManager::getResources().size() == 0 + resSize);
+        REQUIRE(ResourceManager::getOrphanedResources().size() == 1);
+        REQUIRE(ResourceManager::getOrphanedResources()["test1"] == res);
+        REQUIRE(ResourceManager::getDeletedResources().empty() == true);
         res->decRef();
     }
 
@@ -600,29 +630,29 @@ TEST_CASE("resourcemanager", "resourcemanager")
     {
         REQUIRE(testResouceCounter == 0);
         TestLoader rl = { "test1" };
-        Resource *res = resourceManager->get("test1",
+        Resource *res = ResourceManager::get("test1",
             TestLoader::load, &rl);
         res->incRef();
         REQUIRE(testResouceCounter == 1);
         REQUIRE(res != nullptr);
         REQUIRE(res->getRefCount() == 2);
-        REQUIRE(resourceManager->mResources.size() == 1);
-        REQUIRE(resourceManager->mResources["test1"] == res);
-        REQUIRE(resourceManager->mOrphanedResources.empty() == true);
-        REQUIRE(resourceManager->mDeletedResources.empty() == true);
-        resourceManager->moveToDeleted(res);
+        REQUIRE(ResourceManager::getResources().size() == 1 + resSize);
+        REQUIRE(ResourceManager::getResources()["test1"] == res);
+        REQUIRE(ResourceManager::getOrphanedResources().empty() == true);
+        REQUIRE(ResourceManager::getDeletedResources().empty() == true);
+        ResourceManager::moveToDeleted(res);
         REQUIRE(testResouceCounter == 1);
         REQUIRE(res->getRefCount() == 1);
-        REQUIRE(resourceManager->mResources.empty() == true);
-        REQUIRE(resourceManager->mOrphanedResources.empty() == true);
-        REQUIRE(resourceManager->mDeletedResources.size() == 1);
+        REQUIRE(ResourceManager::getResources().size() == 0 + resSize);
+        REQUIRE(ResourceManager::getOrphanedResources().empty() == true);
+        REQUIRE(ResourceManager::getDeletedResources().size() == 1);
 
-        resourceManager->clearDeleted();
+        ResourceManager::clearDeleted();
         REQUIRE(testResouceCounter == 1);
         REQUIRE(res->getRefCount() == 1);
-        REQUIRE(resourceManager->mResources.empty() == true);
-        REQUIRE(resourceManager->mOrphanedResources.empty() == true);
-        REQUIRE(resourceManager->mDeletedResources.size() == 1);
+        REQUIRE(ResourceManager::getResources().size() == 0 + resSize);
+        REQUIRE(ResourceManager::getOrphanedResources().empty() == true);
+        REQUIRE(ResourceManager::getDeletedResources().size() == 1);
         res->decRef();
     }
 
@@ -630,36 +660,43 @@ TEST_CASE("resourcemanager", "resourcemanager")
     {
         REQUIRE(testResouceCounter == 0);
         TestLoader rl = { "test1" };
-        Resource *res = resourceManager->get("test1",
+        Resource *res = ResourceManager::get("test1",
             TestLoader::load, &rl);
         res->incRef();
         REQUIRE(testResouceCounter == 1);
         REQUIRE(res != nullptr);
         REQUIRE(res->getRefCount() == 2);
-        REQUIRE(resourceManager->mResources.size() == 1);
-        REQUIRE(resourceManager->mResources["test1"] == res);
-        REQUIRE(resourceManager->mOrphanedResources.empty() == true);
-        REQUIRE(resourceManager->mDeletedResources.empty() == true);
-        resourceManager->moveToDeleted(res);
+        REQUIRE(ResourceManager::getResources().size() == 1 + resSize);
+        REQUIRE(ResourceManager::getResources()["test1"] == res);
+        REQUIRE(ResourceManager::getOrphanedResources().empty() == true);
+        REQUIRE(ResourceManager::getDeletedResources().empty() == true);
+        ResourceManager::moveToDeleted(res);
         REQUIRE(testResouceCounter == 1);
         REQUIRE(res->getRefCount() == 1);
-        REQUIRE(resourceManager->mResources.empty() == true);
-        REQUIRE(resourceManager->mOrphanedResources.empty() == true);
-        REQUIRE(resourceManager->mDeletedResources.size() == 1);
+        REQUIRE(ResourceManager::getResources().size() == 0 + resSize);
+        REQUIRE(ResourceManager::getOrphanedResources().empty() == true);
+        REQUIRE(ResourceManager::getDeletedResources().size() == 1);
 
         res->decRef();
-        resourceManager->clearDeleted();
+        ResourceManager::clearDeleted();
         REQUIRE(testResouceCounter == 0);
-        REQUIRE(resourceManager->mResources.empty() == true);
-        REQUIRE(resourceManager->mOrphanedResources.empty() == true);
-        REQUIRE(resourceManager->mDeletedResources.empty() == true);
+        REQUIRE(ResourceManager::getResources().size() == 0 + resSize);
+        REQUIRE(ResourceManager::getOrphanedResources().empty() == true);
+        REQUIRE(ResourceManager::getDeletedResources().empty() == true);
     }
 
-    delete resourceManager;
-    resourceManager = safeResman;
     delete2(client);
     VirtFs::unmountDirSilent("data");
     VirtFs::unmountDirSilent("../data");
     delete2(logger);
 //    VirtFs::deinit();
 }
+
+TEST_CASE("resourcemanager leak test2")
+{
+    logger = new Logger();
+    REQUIRE(gui == nullptr);
+    ResourceManager::cleanOrphans(true);
+    ResourceManager::deleteInstance();
+    delete2(logger);
+}
diff --git a/src/resources/sprite/animatedsprite.cpp b/src/resources/sprite/animatedsprite.cpp
index 960a5ea00..3e9250e13 100644
--- a/src/resources/sprite/animatedsprite.cpp
+++ b/src/resources/sprite/animatedsprite.cpp
@@ -90,7 +90,7 @@ AnimatedSprite *AnimatedSprite::delayedLoad(const std::string &restrict
 {
     if (!mEnableCache)
         return load(filename, variant);
-    Resource *restrict const res = resourceManager->getFromCache(
+    Resource *restrict const res = ResourceManager::getFromCache(
         filename, variant);
     if (res)
     {
diff --git a/src/resources/sprite/animatedsprite_unittest.cc b/src/resources/sprite/animatedsprite_unittest.cc
index d17177a6d..f48b10b4b 100644
--- a/src/resources/sprite/animatedsprite_unittest.cc
+++ b/src/resources/sprite/animatedsprite_unittest.cc
@@ -54,6 +54,15 @@
 
 #include "debug.h"
 
+TEST_CASE("AnimatedSprite leak test1")
+{
+    logger = new Logger();
+    REQUIRE(gui == nullptr);
+    ResourceManager::cleanOrphans(true);
+    ResourceManager::deleteInstance();
+    delete2(logger);
+}
+
 TEST_CASE("AnimatedSprite tests", "animatedsprite")
 {
     setEnv("SDL_VIDEODRIVER", "dummy");
@@ -63,7 +72,6 @@ TEST_CASE("AnimatedSprite tests", "animatedsprite")
     XML::initXML();
     SDL_Init(SDL_INIT_VIDEO);
     logger = new Logger();
-    ResourceManager::init();
     VirtFs::mountDirSilent("data", Append_false);
     VirtFs::mountDirSilent("../data", Append_false);
     mainGraphics = new SDLGraphics;
@@ -196,3 +204,12 @@ TEST_CASE("AnimatedSprite tests", "animatedsprite")
     delete2(logger);
 //    VirtFs::deinit();
 }
+
+TEST_CASE("AnimatedSprite leak test2")
+{
+    logger = new Logger();
+    REQUIRE(gui == nullptr);
+    ResourceManager::cleanOrphans(true);
+    ResourceManager::deleteInstance();
+    delete2(logger);
+}
diff --git a/src/utils/chatutils_unittest.cc b/src/utils/chatutils_unittest.cc
index b5b368f31..d613665dc 100644
--- a/src/utils/chatutils_unittest.cc
+++ b/src/utils/chatutils_unittest.cc
@@ -50,13 +50,21 @@
 
 #include "debug.h"
 
+TEST_CASE("chatutils leak test1")
+{
+    logger = new Logger();
+    REQUIRE(gui == nullptr);
+    ResourceManager::cleanOrphans(true);
+    ResourceManager::deleteInstance();
+    delete2(logger);
+}
+
 TEST_CASE("chatutils replaceVars")
 {
     client = new Client;
     XML::initXML();
     SDL_Init(SDL_INIT_VIDEO);
     logger = new Logger();
-    ResourceManager::init();
     VirtFs::mountDirSilent("data", Append_false);
     VirtFs::mountDirSilent("../data", Append_false);
     theme = new Theme;
@@ -260,3 +268,12 @@ TEST_CASE("chatutils textToMe")
     REQUIRE(textToMe("*") == "***");
     REQUIRE(textToMe("test line") == "*test line*");
 }
+
+TEST_CASE("chatutils leak test2")
+{
+    logger = new Logger();
+    REQUIRE(gui == nullptr);
+    ResourceManager::cleanOrphans(true);
+    ResourceManager::deleteInstance();
+    delete2(logger);
+}
diff --git a/src/utils/stringutils_unittest.cc b/src/utils/stringutils_unittest.cc
index d93e7a007..9d3285ccc 100644
--- a/src/utils/stringutils_unittest.cc
+++ b/src/utils/stringutils_unittest.cc
@@ -1474,7 +1474,6 @@ TEST_CASE("stringuntils timeDiffToString")
 TEST_CASE("stringuntils replaceItemLinks")
 {
     logger = new Logger();
-    ResourceManager::init();
     VirtFs::mountDirSilent("data", Append_false);
     VirtFs::mountDirSilent("../data", Append_false);
     VirtFs::mountDirSilent("data/test", Append_false);
diff --git a/src/utils/translation/poparser_unittest.cc b/src/utils/translation/poparser_unittest.cc
index 3d7ac2aaa..7ba006f82 100644
--- a/src/utils/translation/poparser_unittest.cc
+++ b/src/utils/translation/poparser_unittest.cc
@@ -46,13 +46,21 @@
 
 #include "debug.h"
 
+TEST_CASE("PoParser leak test1")
+{
+    logger = new Logger();
+    REQUIRE(gui == nullptr);
+    ResourceManager::cleanOrphans(true);
+    ResourceManager::deleteInstance();
+    delete2(logger);
+}
+
 TEST_CASE("PoParser tests", "PoParser")
 {
     setEnv("SDL_VIDEODRIVER", "dummy");
 
     client = new Client;
     logger = new Logger();
-    ResourceManager::init();
     VirtFs::mountDirSilent("data", Append_false);
     VirtFs::mountDirSilent("../data", Append_false);
 
@@ -137,3 +145,12 @@ TEST_CASE("PoParser tests", "PoParser")
     delete2(logger);
 //    VirtFs::deinit();
 }
+
+TEST_CASE("PoParser leak test2")
+{
+    logger = new Logger();
+    REQUIRE(gui == nullptr);
+    ResourceManager::cleanOrphans(true);
+    ResourceManager::deleteInstance();
+    delete2(logger);
+}
diff --git a/src/utils/xml_unittest.cc b/src/utils/xml_unittest.cc
index a52c5f522..6fd9a5e0a 100644
--- a/src/utils/xml_unittest.cc
+++ b/src/utils/xml_unittest.cc
@@ -42,18 +42,29 @@
 
 #include "resources/sdlimagehelper.h"
 
+#include "resources/sprite/animatedsprite.h"
+
 #include "resources/resourcemanager/resourcemanager.h"
 
 #include "debug.h"
 
+TEST_CASE("xml test1")
+{
+    logger = new Logger();
+    REQUIRE(client == nullptr);
+    REQUIRE(gui == nullptr);
+    ResourceManager::cleanOrphans(true);
+    ResourceManager::deleteInstance();
+    delete2(logger);
+}
+
 TEST_CASE("xml doc")
 {
     setEnv("SDL_VIDEODRIVER", "dummy");
 
+    logger = new Logger();
     client = new Client;
     XML::initXML();
-    logger = new Logger();
-    ResourceManager::init();
     VirtFs::mountDirSilent("data", Append_false);
     VirtFs::mountDirSilent("../data", Append_false);
     mainGraphics = new SDLGraphics;
@@ -371,9 +382,19 @@ TEST_CASE("xml doc")
 
     delete2(theme);
     delete2(client);
+    ResourceManager::deleteInstance();
     VirtFs::unmountDirSilent("data");
     VirtFs::unmountDirSilent("../data");
 
     delete2(logger);
 //    VirtFs::deinit();
 }
+
+TEST_CASE("xml test2")
+{
+    logger = new Logger();
+    REQUIRE(gui == nullptr);
+    ResourceManager::cleanOrphans(true);
+    ResourceManager::deleteInstance();
+    delete2(logger);
+}
diff --git a/src/utils/xmlutils_unittest.cc b/src/utils/xmlutils_unittest.cc
index 1a9796b8e..4752eaa53 100644
--- a/src/utils/xmlutils_unittest.cc
+++ b/src/utils/xmlutils_unittest.cc
@@ -28,6 +28,8 @@
 
 #include "fs/virtfs/virtfs.h"
 
+#include "gui/gui.h"
+
 #include "utils/delete2.h"
 
 #include "render/sdlgraphics.h"
@@ -38,12 +40,20 @@
 
 #include "debug.h"
 
+TEST_CASE("xmlutils leak test1")
+{
+    logger = new Logger();
+    REQUIRE(gui == nullptr);
+    ResourceManager::cleanOrphans(true);
+    ResourceManager::deleteInstance();
+    delete2(logger);
+}
+
 TEST_CASE("xmlutils readXmlIntVector 1")
 {
     client = new Client;
     XML::initXML();
     logger = new Logger();
-    ResourceManager::init();
     VirtFs::mountDirSilent("data", Append_false);
     VirtFs::mountDirSilent("../data", Append_false);
 
@@ -89,7 +99,6 @@ TEST_CASE("xmlutils readXmlStringMap 1")
     client = new Client;
     XML::initXML();
     logger = new Logger();
-    ResourceManager::init();
     VirtFs::mountDirSilent("data", Append_false);
     VirtFs::mountDirSilent("../data", Append_false);
 
@@ -134,7 +143,6 @@ TEST_CASE("xmlutils readXmlIntMap 1")
     client = new Client;
     XML::initXML();
     logger = new Logger();
-    ResourceManager::init();
     VirtFs::mountDirSilent("data", Append_false);
     VirtFs::mountDirSilent("../data", Append_false);
     VirtFs::mountDirSilent("data/test", Append_false);
@@ -177,3 +185,12 @@ TEST_CASE("xmlutils readXmlIntMap 1")
     delete2(logger);
 //    VirtFs::deinit();
 }
+
+TEST_CASE("xmlutils leak test2")
+{
+    logger = new Logger();
+    REQUIRE(gui == nullptr);
+    ResourceManager::cleanOrphans(true);
+    ResourceManager::deleteInstance();
+    delete2(logger);
+}