🎮 Magic Node Plugin for Unreal Engine

✨ Overview

Magic Node is a powerful plugin for Unreal Engine that allows developers to write C++-like code directly within Blueprint nodes. It provides a scriptable node system where you can dynamically write, compile, and run custom logic inline with the Blueprint visual scripting system.

🔹 Script on the Fly
🔹 C++-Styled Syntax
🔹 Dynamic Runtime Execution
🔹 Editor Integration

Ideal for prototyping or fine-tuned logic without leaving the Blueprint Editor.

🧱 Features

✅ Scriptable Blueprint Nodes

• Create nodes that accept inline source code.
• Support for logic encapsulation in runtime-compiled nodes.
• Dynamic pin generation based on script function signature.

🧠 Runtime Node Object

UMagicNode is the base object that acts like a mini-script component at runtime:

• Lifecycle methods: Awake(), Start(), Update(), Stop()
• Access to UWorld context
• Debugging support
• Tickable logic via timers

🧩 Blueprint-Embedded Scripts

UMagicNodeScript stores source code and metadata:

• Custom node colors
• Script locking for editor safety
• Inherits from selected UMagicNode class

🧮 Visual Node Integration

UKMGC_MagicNode is the K2 node implementation:

• Handles UI representation via custom Slate widget
• Compiler integration with Blueprint
• Dynamic UI and pin updates
• Tooltip, icon, and category configuration

🔧 Usage

Adding a Magic Node

1. Open your Blueprint Editor.
2. Right-click → Search for Magic Node Script.
3. Drag it into the graph and double-click to open the script editor.

Writing a Script

• Code directly inside the editor window.
• Use syntax similar to C++ for logic.
• Input/output pins will automatically generate based on your function parameters.

Lifecycle Functions

Override the following virtual functions in your script:

void Awake();     // Called once when node is created
void Start();     // Called before first Update
void Update(float DeltaTime); // Called every tick
void Stop();      // Called when node is finished

🛠️ Developer API

UMagicNode

• void Finish() – Ends the node's execution.
• void RegisterWorld(UWorld* World) – Manually set the node’s world context.

UMagicNodeScript

• UClass* GetRuntimeScriptClass() – Returns the class to spawn at runtime.
• bool RefreshRuntimeScriptClass() – Refreshes the class from source code.

UKMGC_MagicNode

• void CompileScript() – Compiles the source code.
• void ReloadRuntimeScript() – Reloads the runtime object.
• FText GetScriptText() – Gets raw script string.
• UEdGraphPin* GetExecPin() / GetThenPin() – Get node execution pins.

🎨 Editor Integration

• Custom Slate widget for node visuals (SKMGC_MagicNodeWidget)
• Pin handling and dynamic script parsing
• Real-time source code editor
• Runtime compilation and validation

🧩 Dependencies

This plugin utilizes several Unreal Engine modules:

• Slate, SlateCore, KismetSystemLibrary
• UGameplayStatics, TimerManager

It also uses:

• Custom parser: IKMGC_ScriptParser
• Code representation: FMGC_SourceCode
• Compiler feedback: EMGC_CompilerResult

📸 Screenshot