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v0.31:Pressure plate
| This article is about an older version of DF. |
Pressure plates act in similar ways to Template:Ls, in that they require a single Template:L to be built, and then a pair of mechanisms to be linked to a Template:L, Template:L, Template:L, or what-have-you. Their accompanying activity is triggered the instant a creature has stepped on them (not including the delay associated with the triggered item); leave a time delay space for traps based on Template:L movement
Types
One-use pressure plates send their signal, then deconstruct the first time they're triggered, leaving behind the mechanism used to construct them and destroying any mechanisms used to link them to other objects. As such, use low quality mechanisms to link with these.
Resetting pressure plates can be reused as many times as you want. They disengage 100 ticks after their trigger is removed.
Uses
Pressure plates are used as a variety of triggers for other activities, such as Template:L raising or Template:L purposes, such as magma or water traps involving reservoirs of said substances.
Pressure plates send an 'open' command the instant something steps on them, and a 'close' command 100 ticks after something steps off of them. If a pressure plate sends an 'open' command to a door/floodgate/floor hatch that is already opened, nothing happens. The only exception to this is gear mechanisms, which toggle their engaged/disengaged state on every trigger from a lever or pressure plate.
Resettable One-Use Pressure Plates
While ordinary one-use plates are easy to use, they deconstruct immediately after triggering and destroy all but one of the mechanisms used. Sometimes, it's desirable to have a system that triggers once, then waits to be reset manually. For example, you might have a pressure plate that seals off your entrance and floods it with magma, but you don't want the flood to stop or the drawbridges to open like it would for a resetting pressure plate, but you also don't want to rebuild and reconnect the one-use pressure plate after every siege when half the parts are submerged in magma. This is when you should use a more complex setup like the one shown in the picture to the right.
Suppose you want to use a pressure plate to seal off your main entrance. You build the setup shown, being sure to construct the lower pumps before the upper pumps and the gear assembly on top after both pumps are done. Then connect the plate in room 2 to the drawbridges that seal the entrance and hook a resetting, enemy triggered plate from your main hallway to the hatch in room 1. The resetting pressure plate in room 2 should be set to trigger whenever any water is on it. You also connect a Template:L to the Template:L above the pumps, which becomes your reset lever, and pull the lever to disengage the gear once its set up. You also connect that gear to a power source with at least 25 Template:L. Lastly, you fill area 1 with 7/7 water (to prevent evaporation) by channeling through the floor and designating a Template:L above it. After it's full, remove the pond zone and build a floor over it for good measure. During construction, you will need scaffolding just like what you use for a Template:L. This setup uses the same trick of channeling through the floor and building the lower pump first to allow them to share their power source. Remember to forbid the access doors when you're done setting everything up.
You can Template:L this from any source, but if your map gives 40 wind power you can just use a Template:L. Build a Template:L right above where it says "power here" and then build a Template:L directly below it. Putting a windmill directly on top of a gear you disengage can cause the windmill to collapse, so don't try that unless it says the windmill has a stable foundation. You may also want to construct a wall around your windmill to prevent a Template:L from smashing it.
Now, whenever your pressure plate is triggered, the hatch will immediately open and dump the water from 1 onto the plate at 2, holding that plate down until you use your reset lever to activate the pump and put the water back on top of the hatch. Don't forget to turn the pumps off after all the water has moved, or it will continue to reset itself until the pumps are stopped. You can eliminate that minor problem by hooking the pressure plates in the Toggle System to the gear assembly on top of the pumps instead of a lever, but that's significantly more complex.
Construction
Pressure plates are built on any Template:L using b, T, p. You will be prompted to enable what type of things should trigger the plate (water, magma, creatures, or some combination of the three). You are then instructed to set up a range between two values of weights- a minimum to a maximum. e and r affect the minimum weight, and d and f affect the maximum. Check the table below for information related to weights.
NOTE: The creature selection screen has an additional setting that allows the pressure plate to ignore, or be triggered by, your citizens. "Citizens" appears to include merchants, diplomats and tame animals.
Construction is done by a Template:L, who will require one Template:L. After construction is completed, use the q key to view the building, and press a to link the pressure plate to choose which trap, floodgate, or other device will be triggered by it. Your mechanic will haul one mechanism to the desired device, work for awhile, and then take another mechanism to the pressure plate itself and complete the task. Your pressure plate is now ready for action.
Choosing Weights
Only adult weights appear in-game. Children creatures will still trigger pads, even though they are unlisted. Creatures with the TRAPAVOID token will not trigger pressure plates, regardless of weight.
First of all, numbers are only showing their first four most significant digits; 500,000, the default minimum weight, will appear to be 5000 in-game. It is easy to double check what you want to set it to by using a lookup and reverse lookup on the list, to compare what the game says about a creature, and what the list says.
Secondly, The weight settings are set up in what appears to be an odd way, but makes sense for the large scale of numbers we can work with. e or d will decrease the weight by 10,000, and r or f will increase the weight by 100,000. It is slightly clumsy but it would be annoying to increase digits by units of 10,000 when trying to get from crundles to whales.
Finally, it appears the weights of creatures between 1,000 and 10,000 in the game have been conglomerated into the 10,000 minimum weight. (Crundles, who weigh 1,000, are listed in the same category as gremlins, who weigh 10,000) The maximum weight is also inclusive of everything over 2,000,000 to at least 20,000,000, until someone verifies that fully grown dragons (over 1000 years old) set off a plate set to "Max (any)".
Weight List
Use your browser's "find" function to easily search for creatures.
[A] following a creature name means it is an Adult, typically 2-12 years after birth; 2 for most work or wild animals, 12 for standard creatures.
[C] means that it is the Child weight, usually one year after birth. Careful, some creatures, most notably Dragons, are newborn/children for 1000 years after birth- there is a weight at age 0 and an increase at age 1000.
Newborn weights are not listed here as it is extremely unlikely they would ever be useful, except for perhaps sentient creatures such as dwarves and humans. On that note, Dwarves, Elves, Humans, and Goblins have separate entries for each stage of life- they are in all caps.
Template:L inherently do not trigger traps - aside from their weight being consistently less than 1000, they aren't treated as actual creatures for the purpose of triggering any sort of trap.
| Weight | Animals |
|---|---|
| 1,000 (Minimum) | Groundhogs[C], Stingrays[C], Buzzards[A], Crundles[C], Creepy Crawlers, Two-Legged Rhino Lizards, Knuckle Worms, Cave Fish, Cave Fish Men, Fire Snakes |
| 2,000 | Gremlins[C], Cats[C], Rhesus Macaques[C], Magma Crabs[C], Hungry Head[C], Helmet Snakes[C], Fox Squirrels, Fluffy Wamblers |
| 3,000 | DWARVEN BABIES, ELVEN BABIES, Foxes[C], Raccoon[C], White Handed Gibbons[C], Black Handed Gibbons[C], Gray Gibbons[C], Silvery Gibbons[C], Pileated Gibbons[C], Bilou Gibbons[C], White Browed Gibbons[C], Black Crested gibbons[C], Angel Sharks[C] |
| 4,000 | HUMAN BABIES, Groundhogs[A], Vultures[C], Milkfish[C] |
| 5,000 | Kobolds[C], Cats[A], Hoary Marmots[C], Rhesus Macaques[A], Hungry Head[A], Bugbats[C], Stingrays[A], Bluefish[C], Amphibian Men[C] |
| 6,000 | Foxes[A], Siamangs[C], White Handed Gibbons[C], Black Handed Gibbons[C], Gray Gibbons[A], Silvery Gibbons[A], Pileated Gibbons[A], Bilou Gibbons[A], White Browed Gibbons[A], Black Crested Gibbons[A], Sea Lampreys[C], Blacktip Reef Sharks[C], whitetip Reef Sharks[C], Fire Imps |
| 7,000 | Mountain Gnomes[C], Dark Gnomes[C], Raccoon[A] |
| 8,000 | Spotted Wobble, Shortfin Mako, Longfin Mako, Coelacanth, Orangutans |
| 10,000 | Gremlins[A], Ice Wolves[C], Mountain Goats[C], Hoary Marmots[A], Gazelles[C], Mandrills[C], Crundles[A], Bugbats[A], Gorlak[C], Plump Helmet Men[C], Spiny Dogfish Sharks[C], Milkfish[A], Longnose Gar[C], Reptile Men[C], Serpent Men[C] |
| 12,000 | Dogs[C], Siamangs[A], Molemarians[C], Snailmen[C], Slugmen[C], Leechmen[C], Large Rats[C], Wagons |
| 15,000 | DWARVEN CHILDREN, ELVEN CHILDREN, GOBLIN CHILDREN, Mountain Gnomes[A], Dark Gnomes[A], Pond Grabbers[C],Reachers[C], Blacktip Reef Sharks[A], Whitetip Reef Sharks[A], Angel Sharks[A], Bluefish[A], Pike[C] |
| 17,000 | HUMAN CHILDREN |
| 20,000 | Kobolds[A], Wolves[C], Gazelle[A], Mandrills[A], Floating Guts, Drunian[C], Creeping Eye, Green Devourers[C], Maneras[C], Cave Blobs, Frill Sharks[C], Conger Eels[C], Cod[C], Great Barracuda[C], Longnose Gar[A], Carp[C], Sea Lampreys[A], Merpeople[C], Amphibian Men[A], Ant Men Workers, Ant Men Drone |
| 25,000 | Leopards[C], Cheetahs[C], Chimpanzees[C], Bonobos[C], Tigerfish[C], Large Rat[A] |
| 30,000 | Satyrs[C], Dogs[A], Cougars[C], magma Crabs[A], Foul Blendecs[C], Pond Grabbers[A], Spiny Dogfish Sharks[A], Spotted Wobbegong Shark[C], Mako Shortfin Sharks[C], Mako Longfin Sharks[C], Common Fish Skates[C], Coelacanth[C], Naked Mole Dogs[C], Troglodyte[C] |
| 35,000 | Pike[A] |
| 40,000 | Stranglers, Wolves[A], Jaguars[C], Orangutans[C], Cave Floaters, Carp[A] |
| 50,000 | Trolls[C], Minotaurs[C], Ice Wolf[A], Beak Dogs[C], Mountain Goats[A], Giant Eagles[C], Warthogs[C], Leopards[A], Cheetahs[A], Chimpanzees[A], Bonobos[A], Drunians[A], Elk Birds[C], Snake Helmets[A], Gorlak[A], Plump Helmet Men[A], Snailmen[A], Slugmen[A], Leechmen[A], Giant Leopards[C], Giant Cheetahs[C], Basking Sharks[C], Bull Sharks[C], Conger Eels[A], Cod[A], Tigerfish[A], Giant Bats[C], Giant Rats[C], Giant Cave Spiders[C], Giant Cave Swallow Men[C], Reptile Men[A], Serpent Men[A], Ant Men Soldiers |
| 60,000 | DWARVES, ELVES, GOBLINS, Satyrs[A], Foul Blendec[A], Harpies, Black Bears[C], Cougars[A], Maneras[A], Tigermen[C], Frill Sharks[A], Great Barracuda[A], Naked Mole Dogs[A], Troglodytes[A] |
| 70,000 | HUMANS, Grimelings, Deer[C], Flesh Balls, Green Devourers[A], Blood Men, Reachers[A], Gabbro Men, Amethyst Men, Merpeople[A], Fire Men, Magma Men, Iron Men, Mud Men |
| 75,000 | Jaguars[A], Gorillas[C] |
| 80,000 | Orangutans[A], Giant Jaguars[C], Spotted Wobbegong Shark[A], Mako Shortfin Shark[A], Mako Longfin Shark[A], Coelacanth[A], Halibut[C] |
| 90,000 | Molemarians[A] |
| 100,000 | Yeti[C], Sasquatch[C], Donkey[C], Giant Eagles [A], Grizzly Bears[C], Warthogs[A], Lions[C], Tigers[C], Elk birds[A], Draltha[C], Blind Cave Bears[C], Giant Leopards[A], Giant Cheetahs[A], Giant Desert Scorpion[C], Blue Sharks[C], Common Fish Skate[A], Opah[C], Giant Bats[A], Giant Rats[A], Giant Moles[C], Giant Cave Spiders[A], Giant Cave Swallow Men[A] |
| 120,000 | Werewolves, Nightwings, Black Bears[A], Muskox[C], Tigermen[A] |
| 140,000 | Deer[A] |
| 150,000 | Beak Dogs[A], Mules[C], Gorillas[A], Elk[C], Cave Dragons[C], Giant Jaguars, Basking Sharks[A], Bull Sharks[A], Giant Toads[C], Giant Olms[C] |
| 200,000 | Dragons[C], Hydras[C], Horses[C], Grizzly Bears [A], Alligators[C], Lions[A], Polar Bears[C], Blind Cave Bears[A], Giant Lions[C], Giant Tigers[C], , Giant Desert Scorpion[A], Tiger Sharks[C], Hammerhead Sharks[C], Opah[A], Giant Groupers[C], Swordfish[C], Halibut[A], Bluefin Tuna[C], Sea Serpent[C], Giant Moles[A], Ant Men Queen |
| 220,000 | Great White Sharks, Whales, Basking Sharks, Manta Rays |
| 225,000 | Tigers[A] |
| 250,000 | Trolls[A], Cows[C], 1 Humped Camels[C], 2 Humped Camels[C] |
| 285,000 | Muskox[A] |
| 300,000 | Unicorns[C], Yeti[A], Sasquatches[A], Blizzard Men, Donkey[A], Elk[A], Blue Sharks[A], Sturgeon[C], Marlins[C], Cave Crocodiles[C], Giant Toads[A], Giant Olms[A] |
| 400,000 | Mules[A], Alligators[A], Saltwater Crocodiles[C], Polar Bears[A], Voracious Cave Crawler[C], Giant Lions[A], Ocean Sunfish[C] |
| 450,000 | Giant Tigers[A] |
| 500,000 (Default Minimum) | Horses[A], 1 Humped Camels[A], 2 Humped Camels[A], Great White Sharks[C], Tiger Sharks[A], Hammerhead Sharks[A], Manta Rays[C] |
| 600,000 | Unicorns[A], Cows[A], Giant Groupers[A], Bluefin Tuna[A], Cave Crocodiles[A] |
| 650,000 | Swordfish[A] |
| 750,000 | Walrus[C], Hippo[C] |
| 800,000 | Marlins[A], Saltwater Crocodiles[A] |
| 900,000 | Voracious Cave Crawler[A] |
| 1,000,000 | Whale Shark[C], Ocean Sunfish[A] |
| 1,500,000 | Rutherer[C], Walrus[A], Sturgeon[A], Hippo[A] |
| 2,000,000 | Ogres[C], Ettin[C], Cyclopes[C], Jabberer[C], Great White Sharks[A] |
| 2,300,000 | Manta Rays[A] |
| 2,500,000 | Elephants[C], Blind Cave Ogres[C], Draltha[A] |
| 3,000,000 | Giants[C], Rutherer[A] |
| 4,500,000 | Jabberer[A] |
| 5,000,000 | Elephants[A], Basking Sharks[C] |
| 6,000,000 | Ogres[A] |
| 7,000,000 | Blind Cave Ogres[A] |
| 8,000,000 | Cyclopes[A], Ettin[A], Hydras[A], Sea Monsters |
| 9,000,000 | Giants[A], Sea Serpents[A] |
| 10,000,000 | Whales[C] |
| 15,000,000 | Cave Dragons[A], Basking Sharks[A] |
| 20,000,000 | Bronze Colossuses, Whales[A], Whale Sharks[A] |
| 25,000,000 | Dragons[A] |
| Rooms |
Barracks • Bedroom • Dining room • Dormitory • Jail • Meeting hall • Hospital • Office • Sculpture garden • Tomb • Zoo |
|---|---|
| Furniture |
Animal trap • Anvil • Armor stand • Bed • Bin • Box • Bucket • Cabinet • Cage • Coffin • Restraint • Seat • Statue • Table • Weapon rack |
| Access | |
| Constructions | |
| Machine & Trap parts |
Axle • Gear assembly • Millstone • Screw pump • Water wheel • Windmill • Lever • Pressure plate • Trap • Support |
| Other Buildings | |
| Related Articles | |