Design Philosophy

OOP: at the core of Godot

• influences the scene system and node hierarchy
• allows the composition of any scenes
• allows the inheritance of any scenes
• nodes inherit from their parents

Reusable objects: scripts and scenes

• Scripts

  Extend Nodes with scripts to create derived types

  these are not technically classes, but describe an init process for built-in classes

  Built-in classes have methods to register data with ClassDB

  Properties, methods, constants, signals

  Objects check the ClassDB to see if a given object supports an operation

• Scenes

  reusable, instantiable, and inheritable groups of nodes

  Often pair a scene with a scripted root node that makes use of scene's nodes

  Scene content defines:

  • what nodes are available to script
  • how nodes are organized
  • how nodes are initialized
  • what signal connections are present

  Scene is always an extension of the script attached to its root node (part of that class)

Godot editor is a Godot game

reliable and flexible UI system

using tool keyword, any game code can be run in the editor

Editor

FileSystem dock: manage files and assets

Scene dock: lists active scene's content

Inspector: allows for managing properties of scene's content

Toolbar: tools for moving, scaling, locking scene objects

Bottom Panel: debugger, animation editor, audio mixer

Workspace: 2D, 3D, Script, AssetLib

Shortcuts List

Resources:

• Search Help: can look up methods, classes, properties, signals

Main Loop

At beginning, OS class instance is run

Next, all drivers, servers, scripting, scenes are loaded

Next, the OS is supplied with a MainLoop