Legacy:Class Tree - Unreal Wiki

# Legacy:Class Tree

### From Unreal Wiki, The Unreal Engine Documentation Site

A class tree is the arrangement of classes in a tree-like hierarchy. In OOP, each has a parent and possibly children classes. Unreal uses the class Object as the root of the hierarchy. See Wikipedia:Hierarchy (object-oriented programming) for more.

## Unreal Tournament 2003/2004

This version of Unreal Tournament adds significantly to the class tree due to new game types and hordes of default mutators.

- Object Class Hierarchy
- Actor Class Hierarchy
- GUI Class Hierarchy

Some pages have branches of the tree where it's useful to have an overview of all the subclasses. E.g. Material or NavigationPoint.

You can also enter the tree and browse page by page from Object or Actor. Or use the search field on every page to directly enter a class name.

## Unreal 2

Class trees on a single page for Unreal_2:

- Class Hierarchy (U2)

## Unreal Tournament

Class trees on a single page for Unreal Tournament:

- Actor Class Hierarchy (UT)
- UWindow Class Hierarchy

You can also enter the tree and browse page by page from Object (UT) or Actor (UT). Or use the search field on every page to directly enter a class name.

## Categories

Class pages are tagged with category labels. These include:

- Category:Legacy Class Tree – pages which contain a class tree or a subbranch
- Category:Legacy Class (UT2003) – UT2003 class spec pages
- Category:Legacy Class (UT2004) – UT2004 class spec pages
- Category:Legacy Class (UT) – Unreal 1 and Unreal Tournament class spec pages
- Category:Legacy Class (DX) – Deus Ex classes
- Category:Legacy Class (U2) – Unreal 2 class spec pages
- Category:Legacy Class (RTNP) – Return to Na Pali class spec pages
- Category:Legacy Class (Devastation) – Devastation class spec pages
- Category:Legacy Custom Class – custom class spec pages; usually they also belong to one of the above categories

## Related Topics

- Actor Classes Browser
- Actor Overview
- UnrealScript
- Object Oriented Programming Overview
- UnrealScript Source

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