HUD (video gaming)

HUD (video gaming)

In video gaming, the HUD is the method by which information is visually relayed to the player as part of a game's user interface. It takes its name from the head-up displays used in modern aircraft.

The HUD is frequently used to simultaneously display several pieces of information including the main character's health, items, and an indication of game progression (such as score or level).

Shown on the HUD

While the information that is displayed on the HUD depends greatly on the game, there are many features that players recognize across many games. Common features include:

* Health / lives - this might include the player's character and possibly other important characters, such as allies or bosses. Real-time strategy games usually show the health of every unit visible on screen. Also, in many FPSs and TPSs, when the player is damaged, the screen (or part of it) flashes briefly (usually in red color, representing blood) and shows arrows or other similar images that point to the direction the threat came from, thus informing the player from which direction the enemies are attacking.
*Time - this may be a timer counting down the time limit of the current turn, level, round or mission or time left until a specific event. A timer counting up to record things such as lap times in racing games, or length of time a player can last in games based on survival. The in game time, such as the current time of day, the date or the year within the game. Some games may also display the real time.
*Weapons/ammo -most games show what weapon is being used, and also so how much ammo is in it. Can show other available weapons, and objects like health packs, radios, etc.
* Capabilities - gameplay options that are often accessible by the player during gameplay, such as available weapons, items, or spells. This can include when the ability will become usable again, such as ammo, magic points, or some other type of "charge up" timer.
* Menus - Menus to exit, change options, delete files, change settings, etc.
* Game progression - the player's current score, money, or level (as in stage or as in experience points). This might also include the character's current task or quest.
* Mini-map - a small map of the area that can act like a radar, showing the terrain, allies and/or enemies, locations like safe houses and shops, streets, etc. (See mini-map for more information.)
*Speedometer - used in most games which feature drivable vehicles. Usually shown only when driving one of these.
* Context-sensitive information - shown only as it becomes important, such as tutorial messages, special one-off abilities, and speech subtitles.
* Reticle / cursor / crosshair - an indication of where the character is aiming or where the mouse pointer is. Pressing a key while pointing at an object or character with the cursor can issue actions like shooting, talking, picking up objects, manipulating switches, using computers, etc.

There are also trends common among genres and platforms. Many online games show player names and a chat text box for talking to the other players. RTS games tend to have complex user interfaces, with context-sensitive panels and a full-overview mini-map with fog of war.

How the HUD is displayed

Typically this information is represented numerically, with the health level being a number from 0 - 100 (percent): 100 representing full health and 0 representing no health or death. However, many other methods of visual representation can be used. For instance, certain games employ a "health bar" which empties as the player becomes hurt.

Armour levels are also commonly monitored, either through a separate readout, or as part of the health system. For example, "Halo 2" uses one recharging shield bar, acting as the health level. When this is depleted the player can only take a few more hits before death. The same goes in "Destroy All Humans!", but in the form of Crypto's shields. Traditionally, games used lives to represent health. Every time the main character was injured he would lose one of his limited lives. Another way to display the life in the HUD is demonstrated in "Gears of War", where the characters life is only displayed when he is under attack and a cog begins to appear on the screen. The fuller the cog, the closer to death the character is, this cog slowly disappears from the HUD as health is regained. This particular health system is sometimes called the "Red ring" system.

There is also a lot of variance with regards to the display of other information. Some games permanently display all the weapons a character is currently carrying, others rely on a pull up weapon selector. Inventory or storage space may also be permanently overlaid over the screen, or accessed via a menu. Alternatively, only a limited number of items stored in the inventory might be displayed at once, with the rest being rotated into view using the " [" and "] " keys.

In order to maintain the suspension of disbelief, some games make the HUD look like a real HUD within the context of the game's world. Many first-person vehicle simulation games use this technique, showing instruments and displays that the driver of the vehicle would be expected to see. The displays in the helmet in the first-person adventure game "Metroid Prime" also mimic the player's point of view. A similar method is used in the game "Tom Clancy's Ghost Recon Advanced Warfighter". It should perhaps be noted that in some of these circumstances where the player and character within the game are meant to see the same 'HUD' information, "" for example, the term HMD (Helmet Mounted Display) would technically be more accurate. This is not to be confused with Head-Up Display.

Some games provide the player with an option to hide part or all of the HUD. This is usually used to create cleaner looking screenshots and videos, which can be essential to producing machinima. Certain games like "Pac-Man World" and "Super Mario Galaxy" even keep the HUD elements off-screen without any option. When this method is used, they will only appear when affected. In some games, they can temporarily be displayed all at once with the press of a button. In games where that method is not used, the only way to display them at once is by pausing the game. A few games give players extensive control over their HUD, such as customizing position, size, color, and opacity. "World of Warcraft" is notable for allowing players to significantly modify and enhance the user interface through Lua scripting.

Despite the modern dominance of 3D graphics in games, HUDs are frequently rendered with a 2D look, often using sprites.

Getting rid of elements

Sometimes information normally displayed in the HUD is instead disguised as part of the scenery or vehicle the player is travelling in. For example when the player is driving a car that can sustain a certain number of hits, a smoke trail might appear when the car can take only two more hits, fire might appear from the car to indicate that the next hit will be fatal. Wounds and bloodstains may sometimes appear on injured characters who may also limp, stagger, slouch over or breath heavily to indicate they are injured.

In rare cases, no HUD is used at all, leaving the player to interpret the auditory and visual cues in the gameworld. The elimination of elements has hardly become a trend in game development nowadays, but can be witnessed in several titles as of late. Some classic examples of games without HUDs are "Silent Hill 2", ', "Ico", "The Getaway", "Another World", "King Kong", and '.

Upcoming games that promise no HUD include "Mirror's Edge", "Sadness", "", and "Champions Online", although this game is not completely HUDless. ["Game Informer, March 2008, Issue 79, "Aliens: Colonial Marines" and "Champions Online" previews] The science fiction third-person thriller "Dead Space" also promises a non-HUD experience...all of the in-game menus and health/weapon information is displayed on Issac's suit, or in holograms that are projected from it.

HUDs and burn-in

It is worth noting that prolonged display of HUD elements on certain CRT-based screens may cause permanent damage in the form of burning into the inner coating of the television sets, which is impossible to repair.Fact|date=October 2008 Also players who pause their games for long hours risk harming their TV sets.Fact|date=October 2008

This is also particularly true with plasma display technology, because of their high risk of burn-in. This could occur with just several hours of displaying the same image or part of image.Fact|date=October 2008

References

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