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Dilating Door

 Dilating Door
type
FeatureClass
 Dilating Door
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Dilating Door
 Dilating Door
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DilatingDoor
 Dilating Door
comment
This trope refers to a particular sci-fi convention of connoting a "futuristic" setting with doors and hatches that open in unusual, hi-tech ways — doors that dilate like an iris, doors that slide up into the ceiling, doors that dissolve and rematerialize... Apparently, plain old hinges are extinct in the future.
Outside of this wiki, "Dilating door" is science fiction Fan Speak for the more general trope that we call "Cool, but Inefficient". This is a reference to Robert A. Heinlein's advice that you could evoke a futuristic air by casually throwing out details like "the door dilated", as if such things were nothing to really notice.
Subtrope of Our Doors Are Different.
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2024-02-06T01:02:19Z
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 Dilating Door
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DBTropes
 Dilating Door / int_10ddd3d5
type
Dilating Door
 Dilating Door / int_10ddd3d5
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Doors in Twilight Princess are surprisingly complicated, mechanically speaking. Many dungeon doors are round, and when pushed in, roll out of the way through some mystery of technology.
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 The Legend of Zelda: Twilight Princess (Video Game)
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Dilating Door
 Dilating Door / int_11fd7982
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Most other doors and hatches in the Metroid Prime Trilogy are pretty complex as well. Rarely do they simply slide open - there are often many interlocking parts and convoluted mechanisms going on, especially on the Pirate Homeworld in Corruption. Some even require spinning the Morph Ball to operate.
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Dilating Door
 Dilating Door / int_1c34acd2
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Rocketship Voyager: While the eponymous rocketship has manually operated hatches, the cube-ship of the Psiborg Collective has dilating doors. At one point, a Space Marine uses his atomic burner to make the door deliquesce as well.
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 Dilating Door / int_1cc11947
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Dilating Door
 Dilating Door / int_1cc11947
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The doors in Descent have a variety of opening animations, from just two panels sliding vertically apart, up to to six-part dilating doors, and several in between.
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 Descent (Video Game)
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 Dilating Door / int_1cf5b80
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Dilating Door
 Dilating Door / int_1cf5b80
comment
Most of the doors in Operation: Matriarchy are circular, opening from the center like an iris. They lead to circular tunnels as well.
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 Operation: Matriarchy (Video Game)
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 Dilating Door / int_27faf621
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Dilating Door
 Dilating Door / int_27faf621
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In one episode of Cyberchase, the kids go to Symmetria to find Ava. The building they encounter has a round door with four holes in it, mounted into a wall with four holes in it. By default, the holes don't align, but every once in a while, the door rotates so that they do align briefly. The trick to getting through is to jump through while it's moving. Nobody gets stuck in it, but it's just asking to happen. Good thing those kids are fairly nimble...
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 Dilating Door / int_30450a9a
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Dilating Door
 Dilating Door / int_30450a9a
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Alien: Isolation has these on Sevastopol Station and the Torrens, as part of the game's Zeerust Canon.
 Dilating Door / int_30450a9a
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 Alien: Isolation (Video Game)
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Dilating Door
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Half-Life: Quite a lot of the doors in the Black Mesa Complex do this vertically and horizontally.
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 Half-Life (Video Game)
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 Dilating Door / int_33dd1d90
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Dilating Door
 Dilating Door / int_33dd1d90
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Half-Life 2 introduces Combine doors, which look like a ton of scrap metal held in place, and each piece individually slides out of the way when the door is opened.
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Dilating Door
 Dilating Door / int_3b7abee2
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Half-Life:
Half-Life: Quite a lot of the doors in the Black Mesa Complex do this vertically and horizontally.
Half-Life 2 introduces Combine doors, which look like a ton of scrap metal held in place, and each piece individually slides out of the way when the door is opened.
 Dilating Door / int_3b7abee2
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 Half-Life (Video Game)
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 Dilating Door / int_3eef2be2
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Masked Avengers: The Masked Gang's lair has one of these doors leading to its inner sanctums, opened by pushing a lever. However, said door only stays open if the lever is held down - an unlucky redshirt finds out the hard way as the door shuts in while he's halfway through, crushing him from the waist.
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 Dilating Door / int_416968a6
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Dilating Door
 Dilating Door / int_416968a6
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Crash Bandicoot 2: Cortex Strikes Back has sewer levels with round, camera-shutter-style doors in the pipe passageways. Plus, every level starts and ends with doors in two vertically-sliding halves.
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The War Against the Chtorr. In A Season for Slaughter, a robot probe is sent into a Chtorran nest, which turns out to have Organic Technology doorways resembling a labia. On seeing this on the camera screen, one soldier quips, "If there are teeth behind that thing, I'm turning gay."
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Consider Phlebas. When Bora Horza Gobuchul gets Thrown Out the Airlock on an alien spacecraft, the airlock just turns inside out.
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This design was homaged/copied on Torchwood.
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Dilating Door
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On Earth: Final Conflict, the Taelons utilize organic slurry on their ships. When a wall or door is "closed", flaps of "skin" or slurry appear to grow from the door frame and coalesce at the center like a wound rapidly healing. They also utilize "virtual glass" (basically force fields) on some instances.
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Amusingly averted in Star Trek (2009). Whereas the Star Trek universe does other things (see below), the Starfleet facility on Delta Vega has a normal exterior door with a panic bar.
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Knights of the Old Republic features a variety of oddly opening doors, ranging from the relatively boring two part doors that slide sideways to ridiculously complex systems of interlocking bars that unlatch and slide apart.
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Starship Titanic's arboretum has a door that 'grows' open and closed and is made of metal plants.
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The doors on the industrial ship in Ghost in the Shell 2: Innocence don't make any sense. They consist of four squared panels fixed to two hinges on each side of the doorframe at middle height which are tilted sideways and into the walls. However, it looks quite cool when Batou charges through the corridors and every 15 meters one of these opens just a split second before he reaches it.
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 Ghost in the Shell (1995)
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Stargate-verse:
The defensive iris used on the titular gate of Stargate SG-1. Arguably, this can be justified because the alien gate didn't come with a convenient slot to allow sliding a solid metal door over the event horizon. But then they completely forgot to explain where the iris disappears to when open and where the presumably complex mechanism for operating it is. By Stargate Atlantis, they just had a more prop-friendly generally-invisible Force Field to use in case of "Unscheduled Off-World Activation."
Stargate Atlantis: Inside the Wraith Hiveship are organic doors inside folds into the walls automatically when someone comes near them.
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Dilating Door
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Its appearance in Fallout 4 is actually a callback to the Mechanist's Lair from Fallout 3, which had a very similar seven layer door.
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Dilating Door
 Dilating Door / int_6c1d09b4
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Parodied in Fallout 4 in the Mechanist's Lair where the main entrance is a ridiculously complex set of doors that take easily couple of minutes to open entirely. It's also a Shout-Out to Get Smart and/or Mystery Science Theater 3000, being exactly the same as one of the doors in both those series' famous door sequences.
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 Fallout 4 (Video Game)
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James White was fond of this in his Sector General books, even having a speech about what kind of doors there are in the universe. Essentially, doors can open through hinges, slide in or out, open up or down, dilate clockwise or counterclockwise, or create a quantum-physics manipulating field around themselves so that every atom of a person can pass through without hitting the atoms in the door. The person making the speech went on to say that no civilization in the universe was known to be advanced enough to use the last option, and if any were ever to be encountered, "we will be sure to be very polite."
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 Dilating Door / int_70814599
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Dilating Door
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The defensive iris used on the titular gate of Stargate SG-1. Arguably, this can be justified because the alien gate didn't come with a convenient slot to allow sliding a solid metal door over the event horizon. But then they completely forgot to explain where the iris disappears to when open and where the presumably complex mechanism for operating it is. By Stargate Atlantis, they just had a more prop-friendly generally-invisible Force Field to use in case of "Unscheduled Off-World Activation."
 Dilating Door / int_70814599
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 Stargate SG-1
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Dilating Door
 Dilating Door / int_74f7210c
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The Legend of Zelda has a few, despite the High Fantasy-esque setting:
The third dungeon in Ocarina of Time plays this straight with actual dilating doors. Justified, as the "dungeon" is the interior of a whale.
Doors in Twilight Princess are surprisingly complicated, mechanically speaking. Many dungeon doors are round, and when pushed in, roll out of the way through some mystery of technology.
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 The Legend of Zelda (Franchise)
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Halo: Most Covenant and Forerunner doors are like this. Covenant doors beep before they open though. The Flood-overrun High Charity in Halo 3 has sphincter doors similar to Prey.
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The doors in Mass Effect are made of layers of interlocking parts.
 Dilating Door / int_7988cb68
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In Traveller, spaceships could have iris (dilating) doors.
 Dilating Door / int_7de8951a
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 Dilating Door / int_7f5bc680
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The Vaults from the Fallout series are sealed behind doors in the form of enormous steel cogwheels that are rolled along a track by a mechanical arm and then slid shut.
Parodied in Fallout 4 in the Mechanist's Lair where the main entrance is a ridiculously complex set of doors that take easily couple of minutes to open entirely. It's also a Shout-Out to Get Smart and/or Mystery Science Theater 3000, being exactly the same as one of the doors in both those series' famous door sequences.
Its appearance in Fallout 4 is actually a callback to the Mechanist's Lair from Fallout 3, which had a very similar seven layer door.
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Although GoldenEye (1997) usually does fine with normal sliding doors, the Cavern level features iris doors. And yes, it is a pain in the ass when the door takes 5 seconds to open while you're fighting a horde of 20 enemies in your back... on the flip side, they do let you get the drop on some enemies on the other side by abusing the fact that you can get shots off on them faster than their ability to react as you rapidly close/open the door mid opening-animation.
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 GoldenEye (1997) (Video Game)
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Star Trek:
On the original Star Trek they did everything possible to make the doors interesting — except for having it descend into the floor (that was too expensive).
The later series increased the budget. Of note are the airlock◊ doors◊ on Deep Space Nine, which look like gears with windows attached to mechanical arms and roll sideways.
This design was homaged/copied on Torchwood.
On the Star Trek: The Next Generation episode "The First Duty", the Academy dorms have doorknobs and hinges. Probably to give the cadets more things to polish.
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In the future part of Day of the Tentacle, the doors open vertically with the original Star Trek sound.
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Girl Genius: Zola and her crew when she's trying to usurp power as a false Hetrodyne get stuck for a while trying to force a dilating door open in Castle Heterodyne. The castle kills one of her lackeys and paints "The Heterodyne Must Enter Alone" above the door in his blood.
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Ships in Animorphs are 'living metal'.
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In Mystery Science Theater 3000, the main characters are compelled through an elaborate series of variously opening doors and into the screening room. Well, Cambot is. The audience never sees the other characters during the door sequence; they might be going into the theater through a side door. And this might just be a shout-out to the opening and ending sequences of Get Smart.
The design is also homaged in the Hexfield Viewscreen, the ship-to-ship communications device of the Satellite of Love, which irises open and shut.
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On the original Star Trek they did everything possible to make the doors interesting — except for having it descend into the floor (that was too expensive).
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 Star Trek: The Original Series
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Portal 2:
The hatch between the Central Control Chamber and the Main Breaker Room is composed of six triangular pieces that can either be inserted and removed straight-on, or rotated into position to provide the standard iris effect. Which method is used appears to be up to the Artificial Intelligence or computer that happens to be in control at the time.
The doors intended for human use slide into the walls or floor/ceiling just like modern automatic doors. However, the locking mechanisms consists of pieces of one side which will rotate into the other side in full view of everyone. For the test chamber doors, when they're fully locked, the mechanism completes the Portal 2 logo.
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Some towns in the Pokémon games, especially from Generation 3 and onwards, have either automatic doors for even civilian houses or, in cases like Pokémon Black Version's Opelucid City, thin blue film that fades away into the air (in other words, a diluting door) upon entering, then rematerializes after passing completely through. However, if the setting is old-fashioned, even in more recent games, then the doors are built strictly as hinged boards the way most are in the real world, such as in Sootopolis City (themed on Mykonos, Greece) or White Forest.
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In PlanetSide 1's Core Combat caverns, the Ancient Vanu facilities all feature large round doors which vanish when approached, then re-materialize. The doors in human facilities such as the bases and towers feature sliding doors which split along the center. Vehicle bay doors in the Tech Plants slide into the ground when a vehicle leaves the vehicle pad.
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The third dungeon in Ocarina of Time plays this straight with actual dilating doors. Justified, as the "dungeon" is the interior of a whale.
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Dilating Door
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Alien: The sections of the air duct system on the starship Nostromo are separated by dilating hatches. This makes sense assuming that their intended purpose is to regulate air flow through the ship and not to be pressure-tight in case of a hull breech. Ordinary hatches slide upward or sideways.
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1.0
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Dilating Door / int_b9a0d78d
 Dilating Door / int_bbd25dac
type
Dilating Door
 Dilating Door / int_bbd25dac
comment
Heinlein's 1982 novel Friday has a casual mention of a door "contracting" in the first three lines of the book. As in Beyond This Horizon this is not further described or explained, and serves only to give the setting the proper futuristic feel.
 Dilating Door / int_bbd25dac
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1.0
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 Friday
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Dilating Door / int_bbd25dac
 Dilating Door / int_bdbfba8e
type
Dilating Door
 Dilating Door / int_bdbfba8e
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Dr. Who and the Daleks has doors that swing into the sides. However, for some reason, that's just not absurd enough, and one of the doors has to open with a pressure sensor. Said sensor is located three metres away, and elevated by about a foot, meaning that it was utterly useless to the Dalek inhabitants.
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1.0
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Dilating Door
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In Drowtales, the forest-dwelling light elves make use of a magical version of this trope, formed from living, moving wood that spirals open.
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1.0
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 Dilating Door / int_c43df4d8
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Dilating Door
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Doctor Who:
The series has far, far too many "dilating doors" to list here, but special mention goes to a door in "Day of the Daleks" which curls up toward the ceiling in a slow, sinister fashion.
"The Ark in Space" also features a sliding door that almost takes the Fourth Doctor's arm off. "I'm rather attached to it," he said.
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1.0
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Dilating Door
 Dilating Door / int_cd81de4
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Quest for Glory IV has a cave with doors that look like giant sphincters; however, this is Justified since the "cave" is actually the fossilized corpse of an Eldritch Abomination.
 Dilating Door / int_cd81de4
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1.0
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Dilating Door / int_cd81de4
 Dilating Door / int_cf10c600
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Dilating Door
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A bizarre aversion in TRON: Legacy. The interior of Flynn's house in the Grid has obviously visible hinges and door knobs on all of the doors, such that they wouldn't be out of place in a regular modern house. This, of course, is taking place in the entirely virtual world where Cool, but Inefficient is king. Even stranger when compared with the Ascetic Aesthetic design of the rest of the house. In particular, the windows stand out, as they are not made of a solid substance, but instead seem to be Some Kind of Force Field, marking a pretty stark contrast with the doors. Presumably this was either a matter of personal preference on the owner's part or because the filmmakers couldn't get a fancier visual effect to look right.
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Dilating Door
 Dilating Door / int_d3893e60
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The Atomic Submarine: A crewman gets crushed when his arm is caught as he tries to dive through the Dilating Door as it closes, so in this case, it's a Contracting Door.
 Dilating Door / int_d3893e60
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1.0
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Dilating Door
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In Everybody Edits Universe, doors have a swirl pattern, made of six segments that quickly slide open.
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1.0
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Dilating Door
 Dilating Door / int_d8520b74
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Spoofed, of course, in Season 3 of Sam and Max, where the doors on Skun'kape's ship dilate, slide in, and even tilt in — from opposite sides!
 Dilating Door / int_d8520b74
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1.0
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 Sam & Max: Freelance Police (Video Game)
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 Dilating Door / int_db96ded4
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Dilating Door
 Dilating Door / int_db96ded4
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In The Legend of Korra, the doors in the police station are a semi-complex pattern of sliding metal slats. Justified, because the main body of the police force are trained Metal Benders, and it's their powers - not mechanisms — that move the doors around. Most of the other doors in the series are traditionally hinged or manually slid doors.
 Dilating Door / int_db96ded4
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1.0
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Dilating Door
 Dilating Door / int_e1cc15e2
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The Gadget Boy & Heather episode "The day Gadget Boy stood still" involves an alien invasion caused by Spydra manipulating the aliens. After the situation has been resolved and the aliens leave peacefully, they've installed a dilating door at the Capitol entrance as a parting gift.
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Dilating Door
 Dilating Door / int_e4732abc
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Stargate Atlantis: Inside the Wraith Hiveship are organic doors inside folds into the walls automatically when someone comes near them.
 Dilating Door / int_e4732abc
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1.0
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Dilating Door
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Doors in Doom open upwards, primarily due to limitations of the engine. (When the source code was released, a routine for horizontally sliding doors was found to be Dummied Out with the comment "ABANDONED TO THE MISTS OF TIME!!!") "Polyobjects" from the version of the engine used in Hexen and later source ports can be used to make doors that actually imitate real-world door behavior.
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 Dilating Door / int_e7e37776
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Dilating Door
 Dilating Door / int_e7e37776
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In Firefly, on Serenity, the doors to the crew quarters were these elaborate swinging ladder/door combination things. Quite space-efficient, if a bit easy to lock from the wrong side. (And not wheelchair-accessible, although the guest quarters were.) Still quite modest for this trope, since all the doors on the ship are opened by hand. The guest quarters have perfectly ordinary, manual sliding doors, again a matter of saving space.
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Dilating Door
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In Star Trek VI: The Undiscovered Country, the Enterprise halls were designed with various decorative pipes along the ceilings. Problem was they often led to walls with doors that opened upward...
 Dilating Door / int_ed0803a7
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1.0
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In layer 2 of ULTRAKILL, square-shaped doors open and close like camera shutters.
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The Metroid series is an excellent example given that pretty much every door needs to be shot to open. Sometimes they require multiple shots. Sometimes they need missiles.
This is explained in the Metroid Prime Trilogy games as being a method of bypassing the door's normal opening mechanism; you're basically lowering a weak shield that's there to keep wildlife (or you in the case of stronger ones) out and the doors are opening automatically (presumably there's a more peaceful manner of opening the doors). The ones that need missiles explicitly have a blast shield (which disappears after being removed the first time) on them for extra security. Some areas of Super Metroid have doors which lack the shields and just let your straight through when you approach.
Most other doors and hatches in the Metroid Prime Trilogy are pretty complex as well. Rarely do they simply slide open - there are often many interlocking parts and convoluted mechanisms going on, especially on the Pirate Homeworld in Corruption. Some even require spinning the Morph Ball to operate.
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Dead Space 3 has doors that fold up, rotate and vanish in the alien city.
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1.0
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Dilating Door
 Dilating Door / int_f59e607f
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The BUILD engine used by Duke Nukem 3D and Shadow Warrior (1997) allows for a fair variety of doors, including Doom-style vertical ones (including variants which open down or split in the middle), sliding doors, hinged ones (technically just rotating a sector 90 degrees around a pivot sprite), and a couple of more esoteric ones which involve making wall surfaces shrink away to nothing as the door opens (called "Star Trek doors" in the level editor documentation, and a variant which combines that with the aforementioned split vertical door), used for curtains and in alien levels.
 Dilating Door / int_f59e607f
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Dilating Door
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The doors to personal quarters on the eponymous Babylon 5 open by rotating clockwise. They have been known to fall on cast members. Others open like modern automatic doors, sliding to either side. Those doors are actually quite clever, as they're held up by electrical power when open and are closed by the Artificial Gravity produced when the station rotates, with no need for a motor to close them. In the event of a hull breach or life-support failure, the doors would slam shut on their own without any active safety system required.
The doors leading to the Grey Council chamber inside the Minbari ship Valen'tha open much like the iris from Stargate.
The doors made for the human Thralls on Z'ha'dum are the sliding door variety, but they sound like heavy rocks being dragged on concrete.
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The Dexter's Laboratory episode "Photo Finish" features a camera-shutter door in the James Bond-style villain's lair. Par for the course since his villain theme is all about cameras.
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In the Doctor Who New Adventures novel Legacy by Gary Russell, the Doctor and Benny travel to Peladon on a Martian ambassadorial cruiser that uses a "refractive molecular arranger" to make the door simply disappear on command (and their guide apologises that there are still a few flecks of door material in the space). Ace, meanwhile, is travelling to Pakha on a Used Future tramp ship with sliding doors that keep getting stuck.
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Dilating Door
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On the Star Trek: The Next Generation episode "The First Duty", the Academy dorms have doorknobs and hinges. Probably to give the cadets more things to polish.
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1.0
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The following is a list of statements referring to the current page from other pages.

 Dilating Door
processingCategory2
Door Tropes
 Dilating Door
processingCategory2
Futuristic Tech Index
 Dilating Door
processingCategory2
Speculative Fiction Tropes
 Dilating Door
processingCategory2
We Will Not Use an Index in the Future
 Alien / int_49de98db
type
Dilating Door
 Barbarella / int_49de98db
type
Dilating Door
 E.T. the Extra-Terrestrial / int_49de98db
type
Dilating Door
 Masked Avengers / int_49de98db
type
Dilating Door
 The Atomic Submarine / int_49de98db
type
Dilating Door
 Scrapped Princess / int_49de98db
type
Dilating Door
 The First Men in the Moon / int_49de98db
type
Dilating Door
 The Sleeper Awakes / int_49de98db
type
Dilating Door
 Tele-Frag / int_49de98db
type
Dilating Door
 Lexx / int_49de98db
type
Dilating Door
 The Mandalorian / int_49de98db
type
Dilating Door
 Alida The Enigmatic Giant (Video Game) / int_49de98db
type
Dilating Door
 Alien: Isolation (Video Game) / int_49de98db
type
Dilating Door
 Core (Video Game) / int_49de98db
type
Dilating Door
 Crash Bandicoot 2: Cortex Strikes Back (Video Game) / int_49de98db
type
Dilating Door
 Day of the Tentacle (Video Game) / int_49de98db
type
Dilating Door
 Operation: Matriarchy (Video Game) / int_49de98db
type
Dilating Door
 Perfect Dark (Video Game) / int_49de98db
type
Dilating Door
 PlanetSide (Video Game) / int_49de98db
type
Dilating Door
 Starship Titanic (Video Game) / int_49de98db
type
Dilating Door
 ULTRAKILL (Video Game) / int_49de98db
type
Dilating Door
 Cyberchase / int_49de98db
type
Dilating Door
 The Thief and the Cobbler / int_49de98db
type
Dilating Door
 Scrapped Princess / int_49de98db
type
Dilating Door