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{{Quality|Exceptional|12:06, 18 May 2015 (UTC)}}
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#REDIRECT [[Size]]
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{{av}}
 
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:''You may be looking for size of [[clothing]], [[armor]], the dimensions of a [[tile]], or the [[List_of_creatures_by_adult_size|list of creatures by size.]]''
 
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'''Size''' is a measure of how big a [[creature]] or [[item]] is, as volume in cubic centimeters[http://www.bay12forums.com/smf/index.php?topic=30026.msg831163#msg831163], and called {{token|BODY_SIZE|c}} or <code>[[Item_definition_token|[SIZE]]]</code> in [[raw file]]s.
 
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Size has many important effects on the game, many through its direct effect on item [[weight]], but as [[material science|material properties]] go, its implementation is sometimes underwhelming - witness the incredible compression of matter, space, and time that is the [[QSP]]. When even multiple full grown [[dragon]]s occupy a single square, size becomes a little difficult to contextualize. It doesn't help that a [[bronze colossus]] fits in a basic [[wood]]en [[cage]] (although, a [[fire man]] fits in it too).
 
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Size directly affects such things as [[Weapon#Size|which weapons]] your dwarves can equip, [[butcher]]ing returns, [[storage]] limits, and [[combat]] effectiveness for both creatures and weapons.
 
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Size is used to calculate an item's weight, along with the [[density]] of the underlying material(s):
 
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:Weight (in Γ) = Density (in kg/m<sup>3</sup>) * Size (in cm<sup>3</sup>) / 1,000,000 (cm<sup>3</sup> in a m<sup>3</sup>)
 
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Through weight, the size of an item has further ramifications in the game, such as [[hauling]] speed, [[pressure plate]] activation, impact momentum, weight restrictions, and so forth.
 
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The weight of creatures is calculated from the densities and sizes of the layers of their body parts, which currently results in corpse weights that are about 1/3 heavier than expected.
 
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Internally, all custom size numbers are rounded down to the nearest multiple of 10 - thus, if you define an item with [SIZE:15], it will actually behave as if you had specified [SIZE:10].
 
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== Bodysize ==
 
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Creature-specific size is known internally as '''bodysize''' (from the {{tt|[BODY_SIZE]}} [[creature token|token]]). When it comes to creatures, size is a rough stand-in for [[weight]]: standard flesh weighs one gram per cubic centimeter. However, in the infinite complexity of ''Dwarf Fortress'', there are a number of ''other'' [[material]]s animals internalize ([[ivory]], [[hair]], [[horn]], [[shell]], etc.) which have their own densities, shifting a creature's actual weight relative to its size, sometimes significantly (elephant tusks weigh a ''lot''). Bodysize also determines average [[butcher]]ing yields, (along with morphology) how much [[damage]] they can absorb, and (along with morphology and attack definition [[creature token|token]]s) how much damage they can inflict in melee. On {{tt|[HUMANOID]}} creatures, size also directly determines what kind of equipment a creature can wear: large, small, normal, or none at all.
 
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The actual size of a creature is the result of three different effects, one basic and two that are highly variable. First and most basic is the average maintained across an individual species of creature. The second is the [[age]] of the creature: most creatures are not born anywhere near their maximum size, and instead must grow into it; some, like most species of snake, grow throughout their entire lifetime, and probably will not live long enough to reach it. The third is inheritance: version 0.31.1 introduced [[genetics]], allowing creatures to inherit part of their size from the appearance, specifically the height and girth, of their parents.
 
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Actual creature sizes go from 1 (small insect [[vermin]]) to 200,000,000 ([[giant sperm whale]]s, the largest creature in the game).  See [[List of creatures by adult size]] for details. The average size set for a dwarf is 3,000, 15,000, and 60,000, the size of a baby, child and adult respectively.
 
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== Sample list of creature sizes ==
 
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{| width=100% class="sortable" style="text-align:center"
 
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! width="25%" style="text-align:left" | Name
 
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! width="25%" | Size at birth
 
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! width="25%" | Size at maturity
 
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! width="25%" | Notes
 
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|-
 
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| style="text-align:left" | [[Adder]]
 
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| 15
 
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| 150
 
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| Smallest (non-vermin) creature
 
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|-
 
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| style="text-align:left" | [[Rabbit]]
 
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| 50
 
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| 500
 
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| Smallest domestic animal
 
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|-
 
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| style="text-align:left" | [[Cat]]
 
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| 500
 
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| 5,000
 
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|
 
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|-
 
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| style="text-align:left" | [[Kobold]]
 
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| 1,000
 
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| 20,000
 
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|-
 
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| style="text-align:left" | [[Dwarf]]
 
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| 3,000
 
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| 60,000
 
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|-
 
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| style="text-align:left" | [[Deer]]
 
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| 14,000
 
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| 140,000
 
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|-
 
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| style="text-align:left" | [[Giant slug]]
 
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| 200,007
 
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| 200,007
 
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| Smallest giant creature*
 
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|-
 
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| style="text-align:left" | [[Polar bear]]
 
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| 40,000
 
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| 400,000
 
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|-
 
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| style="text-align:left" | [[Water buffalo]]
 
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| 100,000
 
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| 1,000,000
 
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| Largest domestic creature
 
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|-
 
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| style="text-align:left" | [[Rhinoceros]]
 
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| 300,000
 
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| 3,000,000
 
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|-
 
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| style="text-align:left" | [[Elephant]]
 
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| 500,000
 
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| 5,000,000
 
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| Largest natural land-based creature
 
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|-
 
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| style="text-align:left" | [[Cave dragon]]
 
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| 6,000
 
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| 15,000,000
 
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| Largest cavernous creature
 
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|-
 
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| style="text-align:left" | [[Sperm whale]]
 
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| 500,000
 
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| 25,000,000
 
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| Largest natural creature
 
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|-
 
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| style="text-align:left" | [[Dragon]]
 
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| 6,000
 
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| 25,000,000
 
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| Largest [[megabeast]]
 
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|-
 
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| style="text-align:left" | [[Giant elephant]]
 
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| 4,000,000
 
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| 40,000,000
 
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| Largest land-based creature
 
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|-
 
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| style="text-align:left" | [[Giant sperm whale]]
 
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| 4,000,000
 
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| 150,000,000
 
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| Largest creature, period
 
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|}
 
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<nowiki>*</nowiki>Along with giant beetles, brown recluse spiders, damselflies, dragonflies, fireflies, flies, grasshoppers, jumping spiders, lice, mantises, monarch butterflies, mosquitoes, moths, roaches, snails, thrips, and ticks.
 
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== Mechanics ==
 
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* '''Crafted items''': [[Item definition token]]s for [[industry|industry-crafted]] items are specific to various classes of items: for instance, [[ammo]] has its own [[ammo token|ammo definition tokens]], as does [[armor token|armor]], as do [[tool token|tool]]s, and so on. A {{tt|[SIZE]}} token is a field required in all of these definitions.
 
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:* [[Bar]] lacks a defined size token in the raws, but a bar has a size of 6000 cm<sup>3</sup>, which is consistent with their weight and density, and 10 bars fitting inside a [[Storage|bin]]. The dimensionless unit of '150' products per bar, primarily of use for soap, suggests that each use of a bar of soap should diminish by 40cm<sup>3</sup> (i.e. 6000cm<sup>3</sup>/150). Whether this is true is currently untested.{{verify}}
 
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* '''Inorganic items''': [[Stone]]s, [[gem]]s, and [[ore]]s appear to have a default, hard-coded size that is applied to all items of that class; thus there is no direct [[inorganic material definition token]] for it.
 
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* '''Plants''': There is no size [[plant token]].
 
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* '''Buildings''': The {{tt|[DIM:#:#]}} [[building token]] defines the by-[[tile]] size of a [[workshop]] or [[building]].
 
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* '''Creatures''': The [[creature token]] version of {{tt|[SIZE]}} is the <tt>[BODY_SIZE:#:#:#]</tt> token, which accepts three variables. The first number is age in years; the second additional age is in days. The third number is its size in cm<sup>3</sup>. Multiple ages and multiple {{tt|[BODY_SIZE]}} tokens are used to constrain a creature's [[age]]-based growth pattern and final size. Genetics is accounted for by a {{tt|[BODY_APPEARANCE_MODIFIER]}} token tagged for {{tt|LENGTH}} and/or {{tt|HEIGHT}}. For instance, genetic variance in the [[anaconda]] is defined so: {{tt|[BODY_APPEARANCE_MODIFIER:LENGTH:90:95:98:100:102:105:110]}}. Each interval value is genetically inherited, and each interval value has an equal chance of occurring; the numbers are the percentage of the base size a creature in the interval will be.
 
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==See also==
 
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* [[Weight]]
 
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{{Category|Modding}}
 
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[[ru:Size]]
 

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