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When adding events, the editor allows the user to specify conditions or checks that must be fulfilled by each object instance on the screen before the event will be added or run by it. Events can be chained together using sub-events, allowing for more complicated behaviors to be created. [12]
GameMaker accommodates the creation of cross-platform and multi-genre video games using a custom drag-and-drop visual programming language or a scripting language known as Game Maker Language (GML), which can be used to develop more advanced games that could not be created just by using the visual programming features.
Modern game- or graphics-engines generally provide a scene graph—an object-oriented representation of the 3D game-world which often simplifies game design and can be used for more efficient rendering of vast virtual worlds. [citation needed] Most game engines or graphics engines use a Graphics API, which eases communication with the GPU. But ...
The marker interface pattern is a design pattern in computer science, used with languages that provide run-time type information about objects.It provides a means to associate metadata with a class where the language does not have explicit support for such metadata.
Garry Kitchen's GameMaker is an integrated development environment for the Commodore 64, Apple II, and IBM PC compatibles, created by Garry Kitchen and released by Activision in 1985. It is one of the earliest all-in-one game design products aimed at the general consumer, preceded by Broderbund 's The Arcade Machine in 1982.
Objects can contain other objects in their instance variables; this is known as object composition. For example, an object in the Employee class might contain (either directly or through a pointer) an object in the Address class, in addition to its own instance variables like "first_name" and "position".
The GLib Object System, or GObject, is a free software library providing a portable object system and transparent cross-language interoperability. GObject is designed for use both directly in C programs to provide object-oriented C-based APIs and through bindings to other languages to provide transparent cross-language interoperability, e.g ...
Class-based object-oriented programming languages support objects defined by their class. Class definitions include member data. Class definitions include member data. Message passing is a key concept, if not the main concept, in object-oriented languages.