added the basic requiements for physics with box2d

TSE_Core/src/elements/PhysicsEngine.hpp

@@ -0,0 +1,28 @@
+#pragma once
+
+#include "BehaviourScripts/PhysicsObject.hpp"
+#include "box2d/box2d.h"
+#include <vector>
+#include "Vector2.hpp"
+
+namespace TSE
+{
+    class PhysicsEngine
+    {
+    private:
+        inline static std::vector<PhysicsObject*> registeredObjects = std::vector<PhysicsObject*>();
+        inline static b2WorldId worldId = b2WorldId();
+        inline static constexpr float timestep = 1.0f / 60.0f;
+        inline static const int iterations = 4;
+        inline static float elapsedTime = 0;
+        
+    public:
+        static void InitPhysics(Vector2 gravity);
+        static void UpdatePhysics();
+        static void DeletePhysics();
+        static void RegisterPhysicsObject(PhysicsObject* obj);
+        static void UnRegisterPhysicsObject(PhysicsObject* obj);
+        
+        static b2WorldId& GetWorldId();
+    };
+} // namespace TSE