SHADE_Engine/src/Physics/SHPhysicsSystem.cpp

@@ -327,6 +327,11 @@ namespace SHADE
   void SHPhysicsSystem::PhysicsFixedUpdate::Execute(double dt) noexcept
   {
     auto* physicsSystem = reinterpret_cast<SHPhysicsSystem*>(GetSystem());
+    auto scriptSys = SHSystemManager::GetSystem<SHScriptEngine>();
+    if (!scriptSys)
+    {
+        SHLOG_WARNING("[SHPhysicsSystem] Unable to invoke FixedUpdate() on scripts due to missing SHScriptEngine!");
+    }
 
     fixedTimeStep = 1.0 / physicsSystem->fixedDT;
     accumulatedTime += dt;
@@ -334,6 +339,10 @@ namespace SHADE
     int count = 0;
     while (accumulatedTime > fixedTimeStep)
     {
+      if (scriptSys)
+      {
+        scriptSys->ExecuteFixedUpdates();
+      }
       physicsSystem->world->update(static_cast<rp3d::decimal>(fixedTimeStep));
 
       accumulatedTime -= fixedTimeStep;
@@ -352,9 +361,22 @@ namespace SHADE
 
     // Interpolate transforms for rendering
     if (physicsSystem->worldUpdated)
+    {
       physicsSystem->SyncTransforms();
 
-    physicsSystem->ClearInvalidCollisions();
+      // Collision & Trigger messages
+      auto scriptSys = SHSystemManager::GetSystem<SHScriptEngine>();
+      if (scriptSys)
+      {
+        scriptSys->ExecuteCollisionFunctions();
+      }
+      else
+      {
+        SHLOG_WARNING("[SHPhysicsSystem] Unable to invoke collision and trigger script events due to missing SHScriptEngine!");
+      }
+
+      physicsSystem->ClearInvalidCollisions();
+    }
   }
 
   void SHPhysicsSystem::onContact(const CallbackData& callbackData)

SHADE_Engine/src/Physics/SHPhysicsSystemInterface.cpp

@@ -0,0 +1,65 @@
+/************************************************************************************//*!
+\file           SHPhysicsSystemInterface.cpp
+\author         Tng Kah Wei, kahwei.tng, 390009620
+\par            email: kahwei.tng\@digipen.edu
+\date           Oct 31, 2022
+\brief          Contains the definitions of the functions of the static
+                SHPhysicsSystemInterface class.
+
+Copyright (C) 2022 DigiPen Institute of Technology.
+Reproduction or disclosure of this file or its contents without the prior written consent
+of DigiPen Institute of Technology is prohibited.
+*//*************************************************************************************/
+// Precompiled Headers
+#include "SHpch.h"
+// Primary Header
+#include "SHPhysicsSystemInterface.h"
+// Project Includes
+#include "ECS_Base/Managers/SHSystemManager.h"
+#include "Physics/SHPhysicsSystem.h"
+#include "Physics/SHPhysicsUtils.h"
+
+namespace SHADE
+{
+  /*-----------------------------------------------------------------------------------*/
+  /* Static Usage Functions                                                            */
+  /*-----------------------------------------------------------------------------------*/
+  const std::vector<SHCollisionEvent>& SHPhysicsSystemInterface::GetCollisionInfo() noexcept
+  {
+    static std::vector<SHCollisionEvent> emptyVec;
+
+    auto phySystem = SHSystemManager::GetSystem<SHPhysicsSystem>();
+    if (phySystem)
+    {
+      return phySystem->GetCollisionInfo();
+    }
+
+    SHLOG_WARNING("[SHPhysicsSystemInterface] Failed to get collision events. Empty vector returned instead.");
+    return emptyVec;
+  }
+  const std::vector<SHCollisionEvent>& SHPhysicsSystemInterface::GetTriggerInfo() noexcept
+  {
+    static std::vector<SHCollisionEvent> emptyVec;
+
+    auto phySystem = SHSystemManager::GetSystem<SHPhysicsSystem>();
+    if (phySystem)
+    {
+      return phySystem->GetTriggerInfo(); 
+    }
+
+    SHLOG_WARNING("[SHPhysicsSystemInterface] Failed to get trigger events. Empty vector returned instead.");
+    return emptyVec;
+  }
+
+  double SHPhysicsSystemInterface::GetFixedDT() noexcept
+  {
+    auto phySystem = SHSystemManager::GetSystem<SHPhysicsSystem>();
+    if (phySystem)
+    {
+      return phySystem->GetFixedDT();
+    }
+
+    SHLOG_WARNING("[SHPhysicsSystemInterface] Failed to get fixed delta time. 0.0 returned instead.");
+    return 0.0;
+  }
+}

SHADE_Engine/src/Physics/SHPhysicsSystemInterface.h

@@ -0,0 +1,46 @@
+/************************************************************************************//*!
+\file           SHPhysicsSystemInterface.h
+\author         Tng Kah Wei, kahwei.tng, 390009620
+\par            email: kahwei.tng\@digipen.edu
+\date           Oct 31, 2022
+\brief          Contains the definition of the SHGraphicsSystemInterface static class.
+
+Copyright (C) 2022 DigiPen Institute of Technology.
+Reproduction or disclosure of this file or its contents without the prior written consent
+of DigiPen Institute of Technology is prohibited.
+*//*************************************************************************************/
+#pragma once
+
+// STL Includes
+#include <vector>
+
+namespace SHADE
+{
+  /*-----------------------------------------------------------------------------------*/
+  /* Forward Declarations                                                              */
+  /*-----------------------------------------------------------------------------------*/
+  class SHCollisionEvent;
+
+  /*-----------------------------------------------------------------------------------*/
+  /* Type Definitions                                                                  */
+  /*-----------------------------------------------------------------------------------*/
+  /// <summary>
+  /// Static class that wraps up certain functions in the SHPhysicsSystem so that 
+  /// accessing it from SHADE_Managed would not cause issues due to C++20 features.
+  /// </summary>
+  class SH_API SHPhysicsSystemInterface final
+  {
+    public:
+    /*---------------------------------------------------------------------------------*/
+    /* Constructor                                                                     */
+    /*---------------------------------------------------------------------------------*/
+    SHPhysicsSystemInterface() = delete;
+
+    /*---------------------------------------------------------------------------------*/
+    /* Static Usage Functions                                                          */
+    /*---------------------------------------------------------------------------------*/
+    [[nodiscard]] static const std::vector<SHCollisionEvent>& GetCollisionInfo() noexcept;
+    [[nodiscard]] static const std::vector<SHCollisionEvent>& GetTriggerInfo() noexcept;
+    [[nodiscard]] static double GetFixedDT() noexcept;
+  };
+}

SHADE_Engine/src/Scripting/SHScriptEngine.cpp

@@ -80,7 +80,10 @@ namespace SHADE
   {
     csScriptsExecuteFixedUpdate();
   }
-
+  void SHScriptEngine::ExecuteCollisionFunctions()
+  {
+    csScriptsExecutePhysicsEvents();
+  }
   void SHScriptEngine::Exit()
   {
     // Do not allow deinitialization if not initialised
@@ -377,6 +380,12 @@ namespace SHADE
       DEFAULT_CSHARP_NAMESPACE + ".ScriptStore",
       "ExecuteLateUpdate"
     );
+    csScriptsExecutePhysicsEvents = dotNet.GetFunctionPtr<CsFuncPtr>
+    (
+      DEFAULT_CSHARP_LIB_NAME,
+      DEFAULT_CSHARP_NAMESPACE + ".ScriptStore",
+      "ExecuteCollisionFunctions"
+    );
     csScriptsFrameCleanUp = dotNet.GetFunctionPtr<CsFuncPtr>
     (
       DEFAULT_CSHARP_LIB_NAME,

SHADE_Engine/src/Scripting/SHScriptEngine.h

@@ -98,6 +98,11 @@ namespace SHADE
     /// </summary>
     void ExecuteFixedUpdates();
     /// <summary>
+    /// Executes the OnCollision*()s and OnTrigger*()s of the Scripts that are attached 
+    /// to Entities.
+    /// </summary>
+    void ExecuteCollisionFunctions();
+    /// <summary>
     /// Shuts down the DotNetRuntime.
     /// </summary>
     void Exit() override;
@@ -245,6 +250,7 @@ namespace SHADE
     CsFuncPtr                      csScriptsExecuteFixedUpdate   = nullptr;
     CsFuncPtr                      csScriptsExecuteUpdate        = nullptr;
     CsFuncPtr                      csScriptsExecuteLateUpdate    = nullptr;
+    CsFuncPtr                      csScriptsExecutePhysicsEvents = nullptr;
     CsFuncPtr                      csScriptsFrameCleanUp         = nullptr;
     CsScriptManipFuncPtr           csScriptsAdd                  = nullptr;
     CsScriptBasicFuncPtr           csScriptsRemoveAll            = nullptr;

SHADE_Managed/src/Engine/Time.cxx

@@ -14,6 +14,9 @@ of DigiPen Institute of Technology is prohibited.
 *//*************************************************************************************/
 // Precompiled Headers
 #include "SHpch.h"
+// External Dependencies
+#include "FRC/SHFramerateController.h"
+#include "Physics/SHPhysicsSystemInterface.h"
 // Primary Header
 #include "Time.hxx"
 
@@ -26,4 +29,8 @@ namespace SHADE
     {
         return SHFrameRateController::GetRawDeltaTime();
     }
+    double Time::FixedDeltaTime::get()
+    {
+        return SHPhysicsSystemInterface::GetFixedDT();
+    }
 }

SHADE_Managed/src/Engine/Time.hxx

@@ -14,8 +14,6 @@ of DigiPen Institute of Technology is prohibited.
 *//*************************************************************************************/
 #pragma once
 
-#include "FRC/SHFramerateController.h"
-
 namespace SHADE
 {
     /// <summary>
@@ -29,13 +27,18 @@ namespace SHADE
         /*-----------------------------------------------------------------------------*/
         /// <summary>
         /// Time taken to process the previous frame.
-        /// Note, is affected by TimeScale. Use UnscaledDeltaTime if you wish to retrieve
-        /// real world time. This is also affected by MaxDeltaTime clamping that
-        /// UnscaledDeltaTime is subject to.
         /// </summary>
         static property double DeltaTime
         {
             double get();
         }
+        /// <summary>
+        /// Time taken for Physics simulations. You should use this for operations 
+        /// within Script.FixedUpdate()
+        /// </summary>
+        static property double FixedDeltaTime
+        {
+            double get();
+        }
     };
 }

SHADE_Managed/src/Math/Vector2.cxx

@@ -236,6 +236,22 @@ namespace SHADE
             lhs.y * rhs.y
         );
     }
+    Vector2 Vector2::operator*(Vector2 lhs, double rhs)
+    {
+        return Vector2
+        (
+            lhs.x * static_cast<float>(rhs),
+            lhs.y * static_cast<float>(rhs)
+        );
+    }
+    Vector2 Vector2::operator/(Vector2 lhs, double rhs)
+    {
+        return Vector2
+        (
+            lhs.x / static_cast<float>(rhs),
+            lhs.y / static_cast<float>(rhs)
+        );
+    }
     Vector2 Vector2::operator*(Vector2 lhs, float rhs)
     {
         return Vector2

SHADE_Managed/src/Math/Vector2.hxx

@@ -361,6 +361,22 @@ namespace SHADE
         /// <param name="lhs">Vector2 to multiply with.</param>
         /// <param name="rhs">Scalar to multiply with.</param>
         /// <returns>The result of the scalar multiplication.</returns>
+        static Vector2 operator*(Vector2 lhs, double rhs);
+        /// <summary>
+        /// Calculates the division of a Vector2 with a scalar value and returns 
+        /// the result.
+        /// </summary>
+        /// <param name="lhs">Scalar to divide with.</param>
+        /// <param name="rhs">Vector2 to divide with.</param>
+        /// <returns>The result of the scalar division.</returns>
+        static Vector2 operator/(Vector2 lhs, double rhs);
+        /// <summary>
+        /// Calculates the multiplication of a Vector2 with a scalar value and returns 
+        /// the result.
+        /// </summary>
+        /// <param name="lhs">Vector2 to multiply with.</param>
+        /// <param name="rhs">Scalar to multiply with.</param>
+        /// <returns>The result of the scalar multiplication.</returns>
         static Vector2 operator*(Vector2 lhs, float rhs);
         /// <summary>
         /// Calculates the division of a Vector2 with a scalar value and returns 

SHADE_Managed/src/Math/Vector3.cxx

@@ -237,6 +237,24 @@ namespace SHADE
             lhs.z * rhs.z
         );
     }
+    Vector3 Vector3::operator*(Vector3 lhs, double rhs)
+    {
+        return Vector3
+        (
+            lhs.x * static_cast<float>(rhs),
+            lhs.y * static_cast<float>(rhs),
+            lhs.z * static_cast<float>(rhs)
+        );
+    }
+    Vector3 Vector3::operator/(Vector3 lhs, double rhs)
+    {
+        return Vector3
+        (
+            lhs.x / static_cast<float>(rhs),
+            lhs.y / static_cast<float>(rhs),
+            lhs.z / static_cast<float>(rhs)
+        );
+    }
     Vector3 Vector3::operator*(Vector3 lhs, float rhs)
     {
         return Vector3

SHADE_Managed/src/Math/Vector3.hxx

@@ -375,6 +375,22 @@ namespace SHADE
         /// <param name="lhs">Vector3 to multiply with.</param>
         /// <param name="rhs">Scalar to multiply with.</param>
         /// <returns>The result of the scalar multiplication.</returns>
+        static Vector3 operator*(Vector3 lhs, double rhs);
+        /// <summary>
+        /// Calculates the division of a Vector3 with a scalar value and returns 
+        /// the result.
+        /// </summary>
+        /// <param name="lhs">Scalar to divide with.</param>
+        /// <param name="rhs">Vector3 to divide with.</param>
+        /// <returns>The result of the scalar division.</returns>
+        static Vector3 operator/(Vector3 lhs, double rhs);
+        /// <summary>
+        /// Calculates the multiplication of a Vector3 with a scalar value and returns 
+        /// the result.
+        /// </summary>
+        /// <param name="lhs">Vector3 to multiply with.</param>
+        /// <param name="rhs">Scalar to multiply with.</param>
+        /// <returns>The result of the scalar multiplication.</returns>
         static Vector3 operator*(Vector3 lhs, float rhs);
         /// <summary>
         /// Calculates the division of a Vector3 with a scalar value and returns 

SHADE_Managed/src/Physics/CollisionInfo.cxx

@@ -0,0 +1,36 @@
+/************************************************************************************//*!
+\file           CollisionInfo.cxx
+\author         Tng Kah Wei, kahwei.tng, 390009620
+\par            email: kahwei.tng\@digipen.edu
+\date           Oct 31, 2022
+\brief          Contains the definition of the functions of the managed CollisionInfo 
+                struct.
+
+                Note: This file is written in C++17/CLI.
+ 
+Copyright (C) 2022 DigiPen Institute of Technology.
+Reproduction or disclosure of this file or its contents without the prior written consent 
+of DigiPen Institute of Technology is prohibited.
+*//*************************************************************************************/
+#include "SHpch.h"
+#include "CollisionInfo.hxx"
+#include "Components/RigidBody.hxx"
+#include "Components/Collider.hxx"
+
+namespace SHADE
+{
+    Collider^ CollisionInfo::Collider::get()
+    {
+        return GameObject.GetComponent<SHADE::Collider^>();
+    }
+
+    CollisionShape^ CollisionInfo::CollisionShape::get()
+    {
+        throw gcnew System::NotImplementedException();
+    }
+
+    RigidBody^ CollisionInfo::RigidBody::get()
+    {
+        return GameObject.GetComponent<SHADE::RigidBody^>();
+    }
+}

SHADE_Managed/src/Physics/CollisionInfo.hxx

@@ -0,0 +1,66 @@
+/************************************************************************************//*!
+\file           CollisionInfo.hxx
+\author         Tng Kah Wei, kahwei.tng, 390009620
+\par            email: kahwei.tng\@digipen.edu
+\date           Oct 31, 2022
+\brief          Contains the definition of the managed CollisionInfo struct with the
+                definition of its properties and declaration of functions.
+
+                Note: This file is written in C++17/CLI.
+ 
+Copyright (C) 2022 DigiPen Institute of Technology.
+Reproduction or disclosure of this file or its contents without the prior written consent 
+of DigiPen Institute of Technology is prohibited.
+*//*************************************************************************************/
+#pragma once
+// Project Includes
+#include "Engine/GameObject.hxx"
+
+namespace SHADE
+{
+    /*---------------------------------------------------------------------------------*/
+    /* Forward Declarations                                                            */
+    /*---------------------------------------------------------------------------------*/
+    ref class RigidBody;
+    ref class Collider;
+    ref class CollisionShape;
+
+    /*---------------------------------------------------------------------------------*/
+    /* Type Definitions                                                                */
+    /*---------------------------------------------------------------------------------*/
+    /// <summary>
+    /// Struct that describes a collision
+    /// </summary>
+    public value struct CollisionInfo
+    {
+      public:
+        /*-----------------------------------------------------------------------------*/
+        /* Properties                                                                  */
+        /*-----------------------------------------------------------------------------*/
+        /// <summary>
+        /// The GameObject whose collider you are colliding with.
+        /// </summary>
+        property GameObject GameObject;
+        /// <summary>
+        /// The Collider that you are colliding with.
+        /// </summary>
+        property Collider^ Collider
+        {
+            SHADE::Collider^ get();
+        }
+        /// <summary>
+        /// The CollisionShape of the Collider that you are colliding with.
+        /// </summary>
+        property CollisionShape^ CollisionShape
+        {
+            SHADE::CollisionShape^ get();
+        }
+        /// <summary>
+        /// The RigidBody that you are colliding with.
+        /// </summary>
+        property RigidBody^ RigidBody
+        {
+            SHADE::RigidBody^ get();
+        }
+    };
+}

SHADE_Managed/src/Scripts/Script.cxx

@@ -147,6 +147,48 @@ namespace SHADE
         SAFE_NATIVE_CALL_END(this)
     }
 
+    void Script::OnCollisionEnter(CollisionInfo collision)
+    {
+        SAFE_NATIVE_CALL_BEGIN
+        onCollisionEnter(collision);
+        SAFE_NATIVE_CALL_END(this)
+    }
+
+    void Script::OnCollisionStay(CollisionInfo collision)
+    {
+        SAFE_NATIVE_CALL_BEGIN
+        onCollisionStay(collision);
+        SAFE_NATIVE_CALL_END(this)
+    }
+
+    void Script::OnCollisionExit(CollisionInfo collision)
+    {
+        SAFE_NATIVE_CALL_BEGIN
+        onCollisionExit(collision);
+        SAFE_NATIVE_CALL_END(this)
+    }
+
+    void Script::OnTriggerEnter(CollisionInfo collision)
+    {
+        SAFE_NATIVE_CALL_BEGIN
+        onTriggerEnter(collision);
+        SAFE_NATIVE_CALL_END(this)
+    }
+
+    void Script::OnTriggerStay(CollisionInfo collision)
+    {
+        SAFE_NATIVE_CALL_BEGIN
+        onTriggerStay(collision);
+        SAFE_NATIVE_CALL_END(this)
+    }
+
+    void Script::OnTriggerExit(CollisionInfo collision)
+    {
+        SAFE_NATIVE_CALL_BEGIN
+        onTriggerExit(collision);
+        SAFE_NATIVE_CALL_END(this)
+    }
+
     /*---------------------------------------------------------------------------------*/
     /* Constructors                                                                    */
     /*---------------------------------------------------------------------------------*/
@@ -169,4 +211,14 @@ namespace SHADE
     void Script::update() {}
     void Script::lateUpdate() {}
     void Script::onDestroy() {}
-}// namespace PlushieAPI
+
+    /*---------------------------------------------------------------------------------*/
+    /* Virtual Event Functions                                                         */
+    /*---------------------------------------------------------------------------------*/
+    void Script::onTriggerEnter(CollisionInfo) {}
+    void Script::onTriggerStay(CollisionInfo) {}
+    void Script::onTriggerExit(CollisionInfo) {}
+    void Script::onCollisionEnter(CollisionInfo) {}
+    void Script::onCollisionStay(CollisionInfo) {}
+    void Script::onCollisionExit(CollisionInfo) {}
+}

SHADE_Managed/src/Scripts/Script.hxx

@@ -15,6 +15,7 @@ of DigiPen Institute of Technology is prohibited.
 
 // Project Includes
 #include "Engine/GameObject.hxx"
+#include "Physics/CollisionInfo.hxx"
 
 namespace SHADE
 {
@@ -213,6 +214,46 @@ namespace SHADE
         /// </summary>
         void OnDestroy();
 
+        /*-----------------------------------------------------------------------------*/
+        /* Event Functions                                                             */
+        /*-----------------------------------------------------------------------------*/
+        /// <summary>
+        /// Used to call onCollisionEnter(). This should be called when a collision is
+        /// detected between the attached GameObject and another GameObject.
+        /// </summary>
+        /// <param name="collision">Information on the collision event.</param>
+        void OnCollisionEnter(CollisionInfo collision);
+        /// <summary>
+        /// Used to call onCollisionStay(). This should be called when a collision is
+        /// persistent between the attached GameObject and another GameObject.
+        /// </summary>
+        /// <param name="collision">Information on the collision event.</param>
+        void OnCollisionStay(CollisionInfo collision);
+        /// <summary>
+        /// Used to call onCollisionExit(). This should be called when a collision ends
+        /// between the attached GameObject and another GameObject.
+        /// </summary>
+        /// <param name="collision">Information on the collision event.</param>
+        void OnCollisionExit(CollisionInfo collision);
+        /// <summary>
+        /// Used to call onTriggerEnter(). This should be called when a trigger-type 
+        /// collision is detected between the attached GameObject and another GameObject.
+        /// </summary>
+        /// <param name="collision">Information on the collision event.</param>
+        void OnTriggerEnter(CollisionInfo collision);
+        /// <summary>
+        /// Used to call onTriggerStay(). This should be called when a trigger-type 
+        /// collision is detected between the attached GameObject and another GameObject.
+        /// </summary>
+        /// <param name="collision">Information on the collision event.</param>
+        void OnTriggerStay(CollisionInfo collision);
+        /// <summary>
+        /// Used to call onTriggerExit(). This should be called when a trigger-type 
+        /// collision is detected between the attached GameObject and another GameObject.
+        /// </summary>
+        /// <param name="collision">Information on the collision event.</param>
+        void OnTriggerExit(CollisionInfo collision);
+
       protected:
         /*-----------------------------------------------------------------------------*/
         /* Constructors                                                                */
@@ -273,6 +314,46 @@ namespace SHADE
         /// </summary>
         virtual void onDestroy();
 
+        /*-----------------------------------------------------------------------------*/
+        /* Virtual Event Functions                                                     */
+        /*-----------------------------------------------------------------------------*/
+        /// <summary>
+        /// Called when the attached GameObject has a trigger Collider and collides with
+        /// another GameObject with a Collider in the first frame of collision.
+        /// </summary>
+        /// <param name="info">Information on the collision event.</param>
+        virtual void onTriggerEnter(CollisionInfo info);
+        /// <summary>
+        /// Called when the attached GameObject has a trigger Collider and collides with
+        /// another GameObject with a Collider in subsequent frames of collision.
+        /// </summary>
+        /// <param name="info">Information on the collision event.</param>
+        virtual void onTriggerStay(CollisionInfo info);
+        /// <summary>
+        /// Called when the attached GameObject has a trigger Collider and leaves a 
+        /// collision with another GameObject with a Collider2D.
+        /// </summary>
+        /// <param name="info">Information on the collision event.</param>
+        virtual void onTriggerExit(CollisionInfo info);
+        /// <summary>
+        /// Called when the attached GameObject has a Collider and collides with
+        /// another GameObject with a Collider in the first frame of collision.
+        /// </summary>
+        /// <param name="info">Information on the collision event.</param>
+        virtual void onCollisionEnter(CollisionInfo info);
+        /// <summary>
+        /// Called when the attached GameObject has a Collider and collides with
+        /// another GameObject with a Collider in subsequent frames of collision.
+        /// </summary>
+        /// <param name="info">Information on the collision event.</param>
+        virtual void onCollisionStay(CollisionInfo info);
+        /// <summary>
+        /// Called when the attached GameObject has a Collider and leaves a 
+        /// collision with another GameObject with a Collider2D.
+        /// </summary>
+        /// <param name="info">Information on the collision event.</param>
+        virtual void onCollisionExit(CollisionInfo info);
+
       private:
         /*-----------------------------------------------------------------------------*/
         /* Data Members                                                                */
@@ -280,4 +361,4 @@ namespace SHADE
         GameObject owner;
     };
 
-} // namespace PlushieAPI
+}

SHADE_Managed/src/Scripts/ScriptStore.cxx

@@ -28,6 +28,8 @@ of DigiPen Institute of Technology is prohibited.
 #include "Engine/Entity.hxx"
 #include "Serialisation/ReflectionUtilities.hxx"
 #include "Engine/Application.hxx"
+#include "Physics/SHPhysicsSystemInterface.h"
+#include "Physics/SHPhysicsUtils.h"
 
 namespace SHADE
 {
@@ -71,7 +73,7 @@ namespace SHADE
         SAFE_NATIVE_CALL_BEGIN
         Script^ script;
         return AddScriptViaNameWithRef(entity, scriptName, script);
-        SAFE_NATIVE_CALL_END_N("SHADE.ScriptStore")
+        SAFE_NATIVE_CALL_END_N("SHADE_Managed.ScriptStore")
         return false;
     }
 
@@ -301,7 +303,7 @@ namespace SHADE
             removeScript(script);
         }
         scriptList->Clear();
-        SAFE_NATIVE_CALL_END_N("SHADE.ScriptStore")
+        SAFE_NATIVE_CALL_END_N("SHADE_Managed.ScriptStore")
     }
     void ScriptStore::RemoveAllScriptsImmediately(Entity entity, bool callOnDestroy)
     {
@@ -326,7 +328,7 @@ namespace SHADE
             startList.Remove(script);
         }
         scriptList->Clear();
-        SAFE_NATIVE_CALL_END_N("SHADE.ScriptStore")
+        SAFE_NATIVE_CALL_END_N("SHADE_Managed.ScriptStore")
     }
     
     /*---------------------------------------------------------------------------------*/
@@ -365,7 +367,7 @@ namespace SHADE
         startList.AddRange(%inactiveStartList);
         inactiveStartList.Clear();
 
-        SAFE_NATIVE_CALL_END_N("SHADE.ScriptStore")
+        SAFE_NATIVE_CALL_END_N("SHADE_Managed.ScriptStore")
     }
     void ScriptStore::FrameCleanUp()
     {
@@ -386,7 +388,7 @@ namespace SHADE
                 scripts.Remove(entity);
             }
         }
-        SAFE_NATIVE_CALL_END_N("SHADE.ScriptStore")
+        SAFE_NATIVE_CALL_END_N("SHADE_Managed.ScriptStore")
     }
     void ScriptStore::Exit()
     {
@@ -410,7 +412,7 @@ namespace SHADE
         startList.Clear();
         disposalQueue.Clear();
         scriptTypeList = nullptr;
-        SAFE_NATIVE_CALL_END_N("SHADE.ScriptStore")
+        SAFE_NATIVE_CALL_END_N("SHADE_Managed.ScriptStore")
     }
 
     /*---------------------------------------------------------------------------------*/
@@ -439,7 +441,7 @@ namespace SHADE
                 script->FixedUpdate();
             }
         }
-        SAFE_NATIVE_CALL_END_N("SHADE.ScriptStore")
+        SAFE_NATIVE_CALL_END_N("SHADE_Managed.ScriptStore")
     }
     void ScriptStore::ExecuteUpdate()
     {
@@ -456,7 +458,7 @@ namespace SHADE
                 script->Update();
             }
         }
-        SAFE_NATIVE_CALL_END_N("SHADE.ScriptStore")
+        SAFE_NATIVE_CALL_END_N("SHADE_Managed.ScriptStore")
     }
     void ScriptStore::ExecuteLateUpdate()
     {
@@ -473,7 +475,95 @@ namespace SHADE
                 script->LateUpdate();
             }
         }
-        SAFE_NATIVE_CALL_END_N("SHADE.ScriptStore")
+        SAFE_NATIVE_CALL_END_N("SHADE_Managed.ScriptStore")
+    }
+
+    void ScriptStore::ExecuteCollisionFunctions()
+    {
+        SAFE_NATIVE_CALL_BEGIN
+        /* Collisions */
+        const auto& collisions = SHPhysicsSystemInterface::GetCollisionInfo();
+        for (const auto& collisionInfo : collisions)
+        {
+            auto entities = 
+            { 
+                std::make_pair(collisionInfo.GetEntityA(), collisionInfo.GetEntityB()),
+                std::make_pair(collisionInfo.GetEntityB(), collisionInfo.GetEntityA())
+            };
+            for (auto entity : entities)
+            {
+                // Don't bother if this object has no scripts or is inactive
+                if (!isEntityActive(entity.first) || !scripts.ContainsKey(entity.first))
+                    continue;
+
+                // Construct the collision state object
+                CollisionInfo info;
+                info.GameObject = GameObject(entity.second);
+
+                // Call all of the script's functions
+                auto entityScripts = scripts[entity.first];
+                if (entityScripts->Count > 0)
+                {
+                    for each (Script ^ script in entityScripts)
+                    {
+                        switch (collisionInfo.GetCollisionState())
+                        {
+                            case SHCollisionEvent::State::ENTER:
+                                script->OnCollisionEnter(info);
+                                break;
+                            case SHCollisionEvent::State::STAY:
+                                script->OnCollisionStay(info);
+                                break;
+                            case SHCollisionEvent::State::EXIT:
+                                script->OnCollisionExit(info);
+                                break;
+                        }
+                    }
+                }
+            }
+        }
+        /* Triggers */
+        const auto& triggers = SHPhysicsSystemInterface::GetTriggerInfo();
+        for (const auto& triggerInfo : triggers)
+        {
+            auto entities = 
+            { 
+                std::make_pair(triggerInfo.GetEntityA(), triggerInfo.GetEntityB()),
+                std::make_pair(triggerInfo.GetEntityB(), triggerInfo.GetEntityA())
+            };
+            for (auto entity : entities)
+            {
+                // Don't bother if this object has no scripts or is inactive
+                if (!isEntityActive(entity.first) || !scripts.ContainsKey(entity.first))
+                    continue;
+
+                // Construct the collision state object
+                CollisionInfo info;
+                info.GameObject = GameObject(entity.second);
+
+                // Call all of the script's functions
+                auto entityScripts = scripts[entity.first];
+                if (entityScripts->Count > 0)
+                {
+                    for each (Script ^ script in entityScripts)
+                    {
+                        switch (triggerInfo.GetCollisionState())
+                        {
+                            case SHCollisionEvent::State::ENTER:
+                                script->OnTriggerEnter(info);
+                                break;
+                            case SHCollisionEvent::State::STAY:
+                                script->OnTriggerStay(info);
+                                break;
+                            case SHCollisionEvent::State::EXIT:
+                                script->OnTriggerExit(info);
+                                break;
+                        }
+                    }
+                }
+            }
+        }
+        SAFE_NATIVE_CALL_END_N("SHADE_Managed.ScriptStore")
     }
 
     bool ScriptStore::SerialiseScripts(Entity entity, System::IntPtr yamlNodePtr)
@@ -509,7 +599,7 @@ namespace SHADE
         }
 
         return true;
-        SAFE_NATIVE_CALL_END_N("SHADE.ScriptStore")
+        SAFE_NATIVE_CALL_END_N("SHADE_Managed.ScriptStore")
         return false;
     }
 
@@ -559,7 +649,7 @@ namespace SHADE
         }
         return true;
 
-        SAFE_NATIVE_CALL_END_N("SHADE.ScriptStore")
+        SAFE_NATIVE_CALL_END_N("SHADE_Managed.ScriptStore")
         return false;
     }
 

SHADE_Managed/src/Scripts/ScriptStore.hxx

@@ -233,6 +233,10 @@ namespace SHADE
         /// Executes LateUpdate() for all scripts.
         /// </summary>
         static void ExecuteLateUpdate();
+        /// <summary>
+        /// Executes OnCollision*() and OnTrigger*() for all scripts.
+        /// </summary>
+        static void ExecuteCollisionFunctions();
 
         /*-----------------------------------------------------------------------------*/
         /* Serialisation Functions                                                     */

TempScriptsFolder/PhysicsTest.cs

@@ -40,4 +40,34 @@ public class PhysicsTest : Script
         }
         Debug.Log($"{Transform.LocalPosition.y}");
     }
+
+    protected override void fixedUpdate()
+    {
+        Debug.Log("Fixed Update");
+    }
+
+    protected override void onCollisionEnter(CollisionInfo info)
+    {
+        Debug.Log($"Collision Enter: {info.GameObject.Name}");
+    }
+    protected override void onCollisionStay(CollisionInfo info)
+    {
+        Debug.Log($"Collision Stay: {info.GameObject.Name}");
+    }
+    protected override void onCollisionExit(CollisionInfo info)
+    {
+        Debug.Log($"Collision Exit: {info.GameObject.Name}");
+    }
+    protected override void onTriggerEnter(CollisionInfo info)
+    {
+        Debug.Log($"Trigger Enter: {info.GameObject.Name}");
+    }
+    protected override void onTriggerStay(CollisionInfo info)
+    {
+        Debug.Log($"Trigger Stay: {info.GameObject.Name}");
+    }
+    protected override void onTriggerExit(CollisionInfo info)
+    {
+        Debug.Log($"Trigger Exit: {info.GameObject.Name}");
+    }
 }