feat: add imguizmo + trigger buxfix

tests/destrum_tests.cpp

@@ -453,6 +453,64 @@ namespace {
         SceneManager::GetInstance().Destroy();
     }
 
+    class TriggerCounter final : public Component {
+    public:
+        explicit TriggerCounter(GameObject& parent)
+            : Component(parent, "TriggerCounter") {}
+
+        std::string GetTypeName() const override { return "TriggerCounter"; }
+        void OnTriggerEnter(GameObject*) override { ++enters; }
+        void OnTriggerExit(GameObject*) override { ++exits; }
+
+        int enters{0};
+        int exits{0};
+    };
+
+    void testNonPhysicsChangesKeepBodies()
+    {
+        Scene& scene = SceneManager::GetInstance().CreateScene("physics-refresh");
+
+        GameObject* trigger = scene.CreateGameObject("trigger");
+        trigger->AddComponent<BoxCollider>(glm::vec3{3.0f})->SetTrigger(true);
+        trigger->AddComponent<Rigidbody>()->SetType(RigidbodyType::Static);
+        auto* counter = trigger->AddComponent<TriggerCounter>();
+
+        GameObject* crate = scene.CreateGameObject("crate");
+        crate->AddComponent<BoxCollider>(glm::vec3{0.5f});
+        auto* crateBody = crate->AddComponent<Rigidbody>();
+        crateBody->SetUseGravity(false);
+        crateBody->SetAllowSleep(false);
+
+        GameObject* lamp = scene.CreateGameObject("lamp");
+        auto* light = lamp->AddComponent<LightComponent>();
+
+        scene.CommitPendingAdditions();
+        scene.GetPhysics().RefreshGameObject(*trigger);
+        scene.GetPhysics().RefreshGameObject(*crate);
+
+        const auto step = [&scene] {
+            for (int i = 0; i < 10; ++i) {
+                scene.FixedUpdate(1.0f / 60.0f);
+            }
+        };
+        step();
+        check(counter->enters == 1 && counter->exits == 0, "a body inside a trigger must enter it once");
+
+        light->SetEnabled(false);
+        light->SetEnabled(true);
+        crate->AddComponent<LightComponent>()->SetEnabled(false);
+        step();
+        check(counter->enters == 1 && counter->exits == 0,
+              "non physics components must not rebuild physics bodies");
+
+        crateBody->SetMass(5.0f);
+        step();
+        check(counter->enters == 2 && counter->exits == 1,
+              "rebuilding a body inside a trigger must exit the old body and enter the new one");
+
+        SceneManager::GetInstance().Destroy();
+    }
+
     void testRenderer2DShapes()
     {
         auto& r2d = Renderer2D::GetInstance();
@@ -1230,6 +1288,7 @@ int main()
     testPhysicsWorldUnits();
     testJoltSphereCollisions();
     testSceneJoltSphereCollisions();
+    testNonPhysicsChangesKeepBodies();
     testAnimatorAssetReferences();
     testLightComponentRoundTrip();
     testModelFileRoundTrip();