Godot

History

• How: Developed by Juan Linietsky and Ariel Manzur, first released publicly in 2014 as open-source.
• Who: Maintained by the Godot Engine community and the Godot Foundation.
• Why: To provide a fully free, open-source game engine with no royalties, no vendor lock-in, and a clean scene-based architecture.

• Introduction

  • Godot is a feature-rich, cross-platform game engine for 2D and 3D games. It uses a unique scene/node system, supports GDScript (Python-like), C#, and C++ (via GDExtension), and exports to Windows, Linux, macOS, Android, iOS, and Web.

  • Advantages

    collapsed:: true
    • Fully open-source and free — no royalties, no subscription.
    • Lightweight editor (~100MB), fast iteration.
    • Unified 2D and 3D workflows in one engine.
    • GDScript is beginner-friendly and tightly integrated.
    • Active community, frequent releases (Godot 4.x is a major leap).

  • Disadvantages

    collapsed:: true
    • Smaller ecosystem than Unity/Unreal (fewer ready-made assets).
    • C# support in Godot 4 is still maturing (.NET 6+).
    • 3D rendering less mature than Unreal Engine for AAA-level visuals.

• Editor & Project Setup

  • Editor Layout

    collapsed:: true
    • Scene Panel (left) — tree of all nodes in the current scene.
    • Viewport (center) — visual editor for 2D/3D.
    • Inspector (right) — properties of the selected node.
    • FileSystem (bottom-left) — project files.
    • Output / Debugger (bottom) — logs, errors, profiler.

  • Key Shortcuts

    collapsed:: true

  • Project Structure

    collapsed:: true

• Scene & Node System

  • Core Concept

    collapsed:: true
    • Everything in Godot is a Node. A Scene is a tree of nodes saved as a .tscn file.
    • Scenes can be instanced inside other scenes — this is the primary composition pattern.

  • Common Node Types

    collapsed:: true

  • 3D Node Types

    collapsed:: true

  • Instancing Scenes

    collapsed:: true

• GDScript — Basics

  • Variables & Types

    collapsed:: true

  • Functions

    collapsed:: true

  • Control Flow

    collapsed:: true

  • Built-in Types

    collapsed:: true

• GDScript — OOP & Classes

  • Classes & extends

    collapsed:: true

  • Inner Classes

    collapsed:: true

  • Inheritance

    collapsed:: true

  • Signals (Observer Pattern)

    collapsed:: true

• Core Lifecycle Methods

  • Built-in Callbacks

    collapsed:: true

  • delta Time Pattern

    collapsed:: true

• Input System

  • Input Actions (Project Settings → Input Map)

    collapsed:: true

  • Mouse Input

    collapsed:: true

  • Gamepad Input

    collapsed:: true

• 2D Game Development

  • CharacterBody2D — Player Movement

    collapsed:: true

  • Area2D — Overlap Detection

    collapsed:: true

  • Sprite2D & AnimatedSprite2D

    collapsed:: true

  • TileMap — Level Design

    collapsed:: true

• 3D Game Development

  • CharacterBody3D — 3D Player Movement

    collapsed:: true

  • Camera3D — First Person Look

    collapsed:: true

  • MeshInstance3D & Materials

    collapsed:: true

  • Raycasting 3D

    collapsed:: true

• Physics System

  • Collision Layers & Masks

    collapsed:: true

  • RigidBody2D / RigidBody3D

    collapsed:: true

  • Groups

    collapsed:: true

• Animation System

  • AnimationPlayer

    collapsed:: true

  • AnimationTree (State Machine)

    collapsed:: true

  • Tween — Procedural Animation

    collapsed:: true

• UI System (Control Nodes)

  • Common UI Nodes

    collapsed:: true

  • UI Scripting

    collapsed:: true

  • Anchors & Layout

    collapsed:: true

• Audio System

  • AudioStreamPlayer

    collapsed:: true

  • Audio Buses

    collapsed:: true

• Resource System & Data Management

  • Resources

    collapsed:: true

  • @export — Inspector Variables

    collapsed:: true

  • Saving & Loading Game Data

    collapsed:: true

• Scene Management

  • Changing Scenes

    collapsed:: true

  • Autoloads (Singletons)

    collapsed:: true

  • SceneTree & Pausing

    collapsed:: true

• Shaders & Visual Effects

  • Shader Basics (Godot Shading Language)

    collapsed:: true

  • Shader Parameters from GDScript

    collapsed:: true

  • GPUParticles2D / GPUParticles3D

    collapsed:: true

  • Environment & Post-Processing

    collapsed:: true

• More Learn

  • Explore the following links for valuable resources, communities, and tools to enhance your skills : -

    • Godot Docs - For Latest Docs and Features