Get rid of having to have Globals::CurrentScene everywhere.

include/Engine/types/Scene.h

@@ -55,6 +55,6 @@ public:
     void Render(JGL::RenderTarget* render_target);
     void Render(ReWindow::RWindow* window);
 public:
-    explicit Scene(const std::string& name, const u8 tick_rate = 40) : tick_rate(tick_rate), name(name), entity_list(new Entity()) {}
+    explicit Scene(const std::string& name, const u8 tick_rate = 40) : tick_rate(tick_rate), name(name), entity_list(new Entity(this)) {}
     virtual ~Scene();
 };

include/Engine/types/entity/Entity.h

@@ -4,13 +4,15 @@
 #include <chrono>
 
 namespace Engine {
+    class Scene;
     class Entity;
 }
 
 class Engine::Entity {
-protected:
+private:
     // nullptr means no parent.
     Entity* parent = nullptr;
+    Scene* scene = nullptr;
 
     // Epoch micro-seconds.
     long creation_time = 0.0f;
@@ -27,6 +29,8 @@ public:
     [[nodiscard]] bool HasChildren() const { return !children.empty(); }
     [[nodiscard]] bool HasParent() const { return parent; }
     [[nodiscard]] Entity* GetParent() const;
+    [[nodiscard]] Scene* GetScene() const;
+    [[nodiscard]] Scene* GetScene();
 
     // Microseconds.
     [[nodiscard]] long GetCreationTime() const;
@@ -35,5 +39,6 @@ public:
     virtual void Update() {}
 public:
     virtual ~Entity();
+    explicit Entity(Scene* scene) : scene(scene), creation_time(std::chrono::duration_cast<std::chrono::microseconds>(std::chrono::high_resolution_clock::now().time_since_epoch()).count()) {}
     explicit Entity() : creation_time(std::chrono::duration_cast<std::chrono::microseconds>(std::chrono::high_resolution_clock::now().time_since_epoch()).count()) {}
 };

include/Engine/types/entity/Trigger.h

@@ -23,7 +23,7 @@ public:
     void SetSize(const Vector2& new_size) { size = new_size; }
 public:
     explicit Trigger(const Vector2& position, const Vector2& size, bool enabled = true) :
-    size(size), Entity(), Living(enabled), BoxCollider(enabled), Movable(position), Renderable(0, false) {}
+    size(size), Living(enabled), BoxCollider(enabled), Movable(position), Renderable(0, false) {}
 
     ~Trigger() override = default;
 };