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In '''[[Halo: Combat Evolved]]''' there is an interesting glitch informally called '''Stopping Time''', that takes advantage of the way that different areas of the levels are loaded into memory.
'''Stopping Time''' is a [[glitch]] present in ''[[Halo: Combat Evolved]]''<nowiki/>'s [[Campaign]]. It is a load-related glitch that can leave objects "frozen in time".


==Overview==
== Background ==
Each level in the game is divided into sections that are loaded individually as the player crosses a specified boundary. It is most recognizable by the split-second lag and the phrase "Loading...Done" that appears on the side of the screen. There are various game elements that are confined to these areas; for instance, in many parts of the game, the Marines accompanying Master Chief will hold back when he enters some areas. To accomplish this, the game confines them to certain areas, blocking them from entering others. The same is true with enemies.
Each level in the game is divided into sections that are loaded individually as the player crosses specified boundaries called "loading points". Such loading points most recognizable by the split-second lag and the phrase "''Loading...Done''" that appears on the side of the screen. When a loading point is crossed, the area that the player is leaving is "frozen in time".
 
The same process happens to all of the ''actors'' -- that is, all allies, enemies, NPCs, [[vehicles]], [[weapons]], and really everything that isn't a fixed, static part of the terrain. When you leave an area, all of the actors from that area are also frozen. Their AIs cease to function, and they stop moving -- they don't even fall down when killed. The effect stops if the actors are returned to their original locations.
 
Obviously, [[Bungie]] didn't want players to interact with -- or even see -- such "frozen" actors, and they took steps to prevent such things from occurring. For example, [[Marines]] are often programmed to stop moving forward when they are about to reach a loading point (ostensibly so they can watch the Master Chief's back). However, while the game takes steps to prevent actors from leaving their designated areas, it never actually checks if they're still in their designated areas when a loading point is activated.
 
The glitch, then, is the ability to freeze actors in place ''beyond their normal areas''. If you can, through any means, take any actor -- be it a [[Marine]] or even an enemy -- through a loading point, then you can interact with the actor while it is frozen.


==Doing the Glitch==
==Doing the Glitch==
Usually the game's design prevents the player from forcibly moving the Marines/enemies from one area to another. This can be accomplished, but usually requires a Warthog to do so. One place that this is easily accomplished is in the level [[Assault on the Control Room (Level)|Assault on the Control Room]], where Master Chief and the Marines fight their way through the deep canyons into a dead-end with the two final bridges high above them. The only way out of the canyon at this point (at least, according to the game's intended design) is through a single small door on the right side of the canyon. The Marines will not follow, instead hanging back to guard Master Chief's back.
Usually the game's design prevents the player from forcibly moving NPCs from one area to another. There are some instances where [[Warthog]]s can be used to work around this limitation.
 
One such instance is present in the level [[Assault on the Control Room (Level)|Assault on the Control Room]], at the area where the Master Chief and the Marines fight their way through the deep canyons into a dead-end with the two final bridges high above them. The only way out of the canyon at this point (at least, according to the game's intended design) is through a single small door on the right side of the canyon. The Marines will not follow, instead staying behind to guard the Master Chief's back.


While it is somewhat difficult, a Warthog can be forced into this area of the canyon with a little effort through the pillars that block the way. If the player fills the two extra seats with Marines and then forces the Warthog through the door into the corridors, once the Warthog crosses the loading point the two Marines will freeze. The reason behind this is that when the player leaves one area, all the "living" elements in that area, whether NPC, Covenant, vehicle, explosion, etc., are frozen where they are, even if they are taken out of that area. You can shoot the Marines once they freeze and while they may make sounds, they will not move until you return with them to their specified area.
While it is somewhat difficult, a Warthog can, with a little effort, be forced through some pillars and into this area of the canyon. If the player fills the two extra seats with Marines and then forces the Warthog through the door into the corridors, then once the Warthog crosses the loading point the two Marines will freeze. This happens because when the player leaves one area, all the "living" elements in that area, whether NPC, [[Covenant]], [[vehicle]], explosion, etc., are frozen where they are -- and no checks are performed to make sure that the now-frozen objects are where they belong. You can shoot the Marines once they freeze and while they may make sounds, they will not move until you return with them to their specified area.


Another example of this glitch can be seen in areas where Hunters roam the interior rooms (in the same level). If you can attract one to follow you into a corridor that contains a loading point, once you cross that point the Hunter will freeze. However, firing into the frozen area or throwing a grenade into it will not freeze that bullet/projectile or grenade. Instead, it will act normally, and if you've damaged the Hunter blood will even splatter on the floor and walls.  If you damage it enough while it is frozen, it will die while frozen, but not fall down until you re-enter the frozen area.
Another example of this glitch can be seen in the same level, in areas where [[Hunters]] roam the interior rooms. If you can get one to follow you into a corridor that contains a loading point, once you cross that point, the Hunter will freeze. However, firing into the frozen area or throwing a grenade into it will not freeze that bullet/projectile or grenade. Instead, it will act normally, and if you've damaged the Hunter blood will even splatter on the floor and walls.  If you damage it enough while it is frozen, it will die while frozen, but not fall down until you re-enter the frozen area.


This glitch takes a lot of experimentation, as there are many other interesting sub-glitches that can follow.
This glitch takes a lot of experimentation, as there are many other interesting sub-glitches that can follow.
== In ''Halo 3'' ==
The glitch is present, albeit in a slightly altered form, in ''[[Halo 3]]''. When a player leaves an area, all elements in that area are frozen. Elements that travel with the player are not frozen, however. The only reason that this is a glitch in ''Halo 3'' is because it can be seen with [[Theater]], when it was likely never intended to be noticed at all.
A simple example is the Campaign level [[The Ark (Level)|The Ark]]. If, upon encountering the first pair of Hunters in the level, a player returns to the previous area (where they had to snipe down a [[Covenant]] [[Pack]]) and then views the resulting Film in Theater, they will find that while they were in the previous area, the Hunters (and everything in that general region) were completely frozen in time.
In that instance, the effect can be quite helpful, as players don't need to worry about their [[ODST]] allies being killed if they need to go back for ammo.


==Trivia==
==Trivia==
*This glitch is very useful when you are in a great need of ammo. Make the game freeze, kill the frozen enemies, and then pick up the grenades and ammo.
*This glitch is very useful when you are in a great need of ammo. Make the game freeze, kill the frozen enemies, and then pick up the grenades and ammo.


*It is this same glitch that stops players that have bump-possessed an AI in Halo Custom Edition from progressing past a loading point. Once the game says Saving... Done, the player will freeze and cannot move unless they revert to last save. This will always happen when anything other than Master Chief.  
*It is this same glitch that stops players that have bump-possessed an AI in [[Halo Custom Edition]] from progressing past a loading point. Once the game says Saving... Done, the player will freeze and cannot move unless they revert to last save. This will always happen when controlling anything other than the Master Chief.
 
[[Category:Halo: Combat Evolved]]
[[Category:Halo: Combat Evolved]]
[[Category:Glitches]]
[[Category:Glitches]]
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