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Andrew Sisk

on 30 April 2013

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Physics In Gaming Hi How it Works Physics in games involves the introduction of the laws of physics into a game using a game engine for the purpose of making the effects feel real to the observer playing or watching the game The Split In gaming, you will find that there are two group of games in which physics is used, known as simulation and arcade Simulation - A simulation is a game in which achieving realistic graphics is the goal. Used for training or do allow a person to understand how something they cant do or to do what is difficult to achieve, like walking on the moon Arcade - An arcade game is your typical shoot-em up or fighter, which the physics in the game are paired more for action rather than realism to give the observer a more enjoyable experience History of the trade The Golden Age - Originated from 1982 - 1981, games just started to have physics, and was the first step in developing the games we have today and the complex physics that goes into them.
Space war was a prime example of a game which demonstrated a great physics engine, able to allow the player to dodge shots and avoid suns while shooting at an opposing ship History of the trade #2 Post-Golden Age(1990-1996) - Game developers started the idea of three dimensional gaming, but with the technology could not achieve that, but could create two and a half dimension games, which gave developers a way to display physics in games in a different way
Successful two and a half dimension games include Duke Nukem, Doom, and Wolfenstien. History of the trade #3 Wonderful World of 3D (1996-Present) - Eventually, due to technology allowing for it, developers gave birth to a new type of game, a 3D game.
Quake was the first game to allow physics to be applied to a true 3D space.
The games proceeding this became much more immersive and realistic, and games that have shown this in a great was are Die by the Sword and Mario Galaxy History of the trade #4 Game Environment - In the recent years, games with a expansive environment that the games physics can interact with have become popular, along with destructible environments that allow the world around you to be destroyed by both you and the AIs actions.
Good examples on games like this are Half-Life 2, Oblivion, and Crysis The engine Physics Engine - Computer software to provide simulation, and typically in games, the speed and game play of the simulation are more important than the accuracy of simulation.
Typically produces real time results in exchange for simple cases of real world physics Rag doll Physics This is a procedural animation and simulation technique in which the goal is to display realistic movement when a character of a game is killed or knocked down.
The system treats the body as a series of rigid bones connected together with hinges at the joints.
The Model simulates the real life physics of when a body collides with the ground.
More Sophisticated engines can handle greater creature movement and collision due to the increased computing powers and accurate simulation of solids, liquids, and hydrodynamics.
Many systems can reproduce the effects of skeleton, muscle, tendons, and other components Particle Systems Common aspect in games used to create animations like explosions and blasts.
Although earlier computers repeated the same explosion in each circumstance, games of the modern age and become more realistic, varying based on the terrain, altitude and the type of bodies being impacted . Collision detection Why your not a ghost one of the single most important features in a game is the collision detection which allows objects in the the environment to interact with both the player and other objects.
In most 3D games, objects are represented by to different meshes or shapes, one visible for artistic appeal and one invisible to provide collision detection for the engine.
The visible tend to be complex and detailed while the invisible has a more simplified shape, and is often refered to as collision geometry The engine in your Hot Rod(video game) Anvil Engine - Large amounts of AI, great unit collision and rag doll physics.
Games from engine include Assassin's Creed and the Prince of Persia. Dead Engine - The engine in your Hot Rod(video game) cont. Unreal Engine - As title describes it is a popular zombie game engine known for its rag doll death physics and limb removal.
Games from engine include Dead Space and Dante's Inferno. A popular engine, that displays good animations, physics, and also is also free for a non-commercial copy.
Games from this engine include Bioshock, Gears of War, Deus Ex, and Batman: Arkham City The Games that make the cut Realistic - Semi-Realistic - Not realistic - Any simulation, Portal, Lunar Lander Halo, Warframes, Call of Duty Mario Cart, Minecraft(haters gonna hate) The physics of Portal Portal was a game developed by Valve, a popular developer, that has in some ways the best physics an arcade game can offer.
Ran on the source engine, Portal and Portal 2 both displayed physics far surpassing other games in both gravity, free fall accuracy, projectile movement and terminal velocity CryEngine - Allows for an expansive world and well designed destructible objects.
Games from this engine include Crisis and Far Cry Why cubes fall In portal, gravity is replicated and used in many of its puzzles. Using the gravity in the game, the player must manipulated objects like cubes and turrets or even themselves in order to surpass the level Why Cubes go forward in air In Portal, the key of the game is to use portals to move objects or yourself from place to place, and using the games physics to your own advantage.
While going through levels, you will notice that objects that are falling into a portal that connects to a portal on a wall will go forward, because of the change in postilion, the object experiences a force going in the direction the portal is facing equal to the gravitational force it was just experiencing, along with more gravitation pull, resulting in a parabola.
Examples of objects in the game that are typically used in parabolas to solve puzzles are blocks, paints, and yourself. Projectile Motion Featured mostly in shooters, causes an object to like a bullet or grenade to go forward and fall in a parabola like in real like.
Although it is mostly seen in shooters like CoD or Battlefield, Projectile motion can also be seen in games like Portal Why I don't accelerate In Portal, You experience real life physics in the form of air resistance and terminal velocity.
As you fall in portal, your acceleration will decrease, sometimes to the point of hitting terminal velocity.
It is difficult, if not impossible however, to hit terminal velocity in portal 2 without placing a portal above and below you, creating an endless fall. The Future Game engines have progressed so far in the last 50 years, so much in fact that many don't know what the next step is other than more computing power and better engines.
Personally, I see that the rise in technology will allow for even more immersion into the games using virtual reality.
Products currently being developed to display virtual reality are the Occulus Rift. The End In Conclusion, when you look at a video game, don't see it as a simple mind draining toy or an aggressive murder tool, look at it as a great accomplishment of science and physics, and as an embodiment of the worlds desire to be immersed in a game that both displays the laws of physics in a accurate, but fun way. Citations Portal(video game). (2013, April 11). Retrieved from http://en.wikipedia.org/wiki/Portal_(video_game)

Game physics. (2013, April 11). Retrieved from http://en.wikipedia.org/wiki/Game_physics

Physics engine. (2013, March 13). Retrieved from http://en.wikipedia.org/wiki/Physics_engine

Pittman, C. (2013, March 03). Physics with portals. Retrieved from http://physicswithportals.com/

Henry, C. (2008, May 06). Physics in mass market games. Retrieved from http://www.gamecareerguide.com/features/534/physics_in_mass_market_.php

Stead, C. (2009, July 15). The 10 best game engines of this generation. Retrieved from http://www.ign.com/articles/2009/07/15/the-10-best-game-engines-of-this-generation
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