Games- An Overview

gaming-chairsAll interactive video games are temporal simulations, meaning that the vir- tual game world model is dynamic-the state of the game world changes over time as the game’s events and story unfold. A video game must also respond to unpredictable inputs from its human player(s)-thus interactive temporal simulations. Finally, most video games present their stories and respond to player input in real time, making them interactive real-time simulations.

One notable exception is in the category of turn-based games like computerized chess or non-real-time strategy games. But even these types of games usually provide the user with some form of real-time graphical user interface. The term “game engine” arose in the mid-1990s in reference to first-person shooter (FPS) games like the insanely popular Doom by id Software.

Doom was architected with a reasonably well-defined separation between its core software components (such as theEllen-K-Gaming three-dimensional graphics rendering system, the collision detection system or the audio system) and the art assets, game worlds and rules of play that comprised the player’s gaming experience. The value of this separation became evident as developers began licensing games and retooling them into new products by creating new art, world layouts, weapons, characters, vehicles and game rules with only minimal changes to the “engine” software.

An Intro to Gaming

Most two- and three-dimensional video games are examples of what computer scientists would call soft real-time interactive agent-based computer simulations. Let’s break this phrase down in order to better understand what it means. In most video games, some subset of the real world -or an imaginary world- is gamejammodeled mathematically so that it can be manipulated by a computer.

The model is an approximation to and a simplification of reality (even if it’s an imaginary reality), because it is clearly impractical to include every detail down to the level of atoms or quarks. Hence, the mathematical model is a simulation of the real or imagined game world. Approximation and simplification are two of the game developer’s most powerful tools. When used skillfully, even a greatly simplified model can sometimes be almost indistinguishable from reality and a lot more fun.

logitech-g35-gaming-headsetAn agent-based simulation is one in which a number of distinct entities known as “agents” interact. This fits the description of most three-dimensional computer games very well, where the agents are vehicles, characters, fireballs, power dots and so on. Given the agent-based nature of most games, it should come as no surprise that most games nowadays are implemented in an object-oriented, or at least loosely object-based, programming language.