CAST II Game Engine
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Class TOperation

Unit

Models

Declaration

type TOperation = class

Description

Auto-inverse operation class

Fields

 NameDescription
PublicFlagsFlag set

Methods

Overview

Publicprocedure Apply;
Protectedprocedure DoApply; virtual; abstract;
Protectedfunction DoMerge(AOperation: TOperation): Boolean; virtual;
Publicfunction Merge(AOperation: TOperation): Boolean;

Description

Publicprocedure Apply;

Applies the operation. Repeated call will undo the operation.

Protectedprocedure DoApply; virtual; abstract;

Should actually perform the operation. Repeated call should undo all changes made by previous call.

Protectedfunction DoMerge(AOperation: TOperation): Boolean; virtual;

Should try to merge the operations and undo information taking in account applied state

Publicfunction Merge(AOperation: TOperation): Boolean;

Adds to the operation actions of the given one if possible and returns True if success. Both operations should be in applied or both in unapplied state.

Last modified: 4 Jul, 2008
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