fix loaded tracks cache does not reset on assets reset

src/engine/AssetsManagement.cpp

@@ -9,6 +9,7 @@
 #include "graphics/core/Shader.hpp"
 #include "graphics/render/ModelsGenerator.hpp"
 #include "graphics/ui/GUI.hpp"
+#include "logic/scripting/scripting.hpp"
 
 static debug::Logger logger("assets-management");
 
@@ -49,6 +50,8 @@ AssetsLoader& AssetsManagement::acquireBackgroundLoader() {
 void AssetsManagement::loadAssets(Content* content) {
     finishBackgroundLoader();
 
+    scripting::on_assets_loading();
+
     const auto& paths = engine.getPaths();
     logger.info() << "loading assets";
     Shader::preprocessor->setPaths(&paths.resPaths);
@@ -59,19 +62,24 @@ void AssetsManagement::loadAssets(Content* content) {
     AssetsLoader loader(engine, *newAssets, paths.resPaths);
     loader.addDefaults(content);
 
-    // no need
-    // correct log messages order is more useful
-    // todo: before setting to true, check if GLSLExtension thread safe 
-    bool threading = false; // look at three upper lines
-    if (threading) {
-        auto task = loader.startTask(
-            [=]() {}, 0
-        );
-        task->waitForEnd();
-    } else {
-        while (loader.hasNext()) {
-            loader.loadNext();
+    try {
+        // no need
+        // correct log messages order is more useful
+        // todo: before setting to true, check if GLSLExtension thread safe 
+        bool threading = false; // look at three upper lines
+        if (threading) {
+            auto task = loader.startTask(
+                [=]() {}, 0
+            );
+            task->waitForEnd();
+        } else {
+            while (loader.hasNext()) {
+                loader.loadNext();
+            }
         }
+    } catch (...) {
+        scripting::revert_assets_loading();
+        throw;
     }
     assets = std::move(newAssets);
     if (content) {

src/logic/scripting/scripting.cpp

@@ -260,6 +260,14 @@ static int push_properties_tables(
     return 1;
 }
 
+void scripting::on_assets_loading() {
+     lua::call_internal(lua::get_main_state(), "backup_and_clear_animation");
+}
+
+void scripting::revert_assets_loading() {
+    lua::call_internal(lua::get_main_state(), "restore_animation_backup");
+}
+
 void scripting::on_content_load(Content* content) {
     scripting::content = content;
     scripting::indices = content->getIndices();

src/logic/scripting/scripting.hpp

@@ -50,6 +50,9 @@ namespace scripting {
 
     void initialize(Engine& engine);
 
+    void on_assets_loading();
+    void revert_assets_loading();
+
     void on_content_load(Content* content);
     void on_content_reset();