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− | {{ | + | {{Rewrite|reason=Cleanup/formatting, full list of deterioration immune items and items that whose market value is not affected.}} |
− | '''Deterioration''' is the gradual loss of the [[Max Hit Points|Hit Points]] of certain items | + | '''Deterioration''' is the gradual loss of the [[Max Hit Points|Hit Points]] of certain items (anything that can be hauled by a colonist) in an outdoor area, water, sea, or swamp. When an item's hit points reach 0, it is destroyed. |
− | + | Deterioration is akin to an item taking damage from projectiles, explosions, or fire since they all affect the same hit points stat. Affected items include [[clothing]], [[armor]], [[weapons]], and most [[resources]]. Deterioration is applied to an item that is not placed in a safe place. | |
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− | + | A [[shelf]] protects any item. Mountains have an indestructible roof making them well-suited to protect perishable items (but can be prone to [[roof]] collapses, destroying everything underneath). | |
− | + | == Items that do not deteriorate == | |
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− | + | ;Special notes: | |
+ | * Other than market value (see next), an item's loss of HP does not affect any other stats, including damage output, accuracy, armor value, heat or cold insulation, nutrition, flammability, beauty, comfort, medical potency or quality, etc. | ||
− | + | * As an item loses hit points, it may also lose its [[Market Value|market value]]. This only applies to items which have not been configured to ignore health when determining price. The XML tag for this is ''healthAffectsPrice'', which defaults to ''true'' if not explicitly set in the def or a parent of the def. This is set, for most items, in the base definition from which the item inherits its properties. | |
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− | + | :: In the base game, items that do ''not'' deteriorate include{{Check Tag|Is this an exhaustive list?}}: | |
− | * [[ | + | ::* raw resources (stone blocks, wood, steel, silver, etc.) |
− | * [[ | + | ::* [[textiles]] (cloth, leathers, wools) |
− | * [[ | + | ::* plant matter (hops, psychoid and smokeleaf leaves; and also including [[wort]]) |
− | * [[ | + | ::* raw animal products* (e.g. milk, [[insect jelly]], eggs) |
− | * | + | ::* [[meal]]s (including [[pemmican]] and [[kibble]])* |
+ | ::* [[drug]]s (including [[neutroamine]]) | ||
+ | ::* components / advanced components | ||
+ | ::* [[chemfuel]] | ||
+ | ::: (* food and meals (but not kibble or insect jelly) are still subject to spoilage) | ||
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+ | :* If an item loses value with hit points, it loses that value very quickly. An item retains 100% of its value down to 90% HP, then loses 1.67% of its maximum value per 1% HP lost between 90% and 60% HP, then loses ''4%'' of its maximum value per 1% HP lost between 60% and 50% HP, then loses 0.2% of its maximum value per 1% HP lost between 50% and 0% HP. The item will have 50% of its maximum value at 60% HP and only 10% of its maximum value at 50% HP. | ||
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+ | * Raw food (i.e. non-meals/pemmican/kibble) is subject to spoilage as well as any deterioration (see previous). | ||
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+ | * Deterioration is also applied to [[apparel]] (both [[clothing]] and [[armor]]) when worn. | ||
− | + | * A colonist does not receive negative thoughts for using deteriorated weapons. | |
− | + | :* Currently equipped weapons do not deteriorate. | |
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− | + | * Deteriorated ingredients do not influence a finished product made from those ingredients in any way. | |
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− | + | * Artillery shells that deteriorate to 0 hit points will explode. | |
− | + | ==Deterioration Rate== | |
+ | An item's [[Deterioration Rate|deterioration rate]] specifies how many hit points are lost per day. Depending on the type of item, it ranges from 0.25/d to 10.0/d. This stat is listed in an item's information tab. If this stat is not listed or listed as '0.00/d', then the item will not deteriorate. Rain greatly affects the deterioration rate. For items with the [[quality]] stat, a high-quality item will have a lower deterioration rate than a poor quality item. | ||
− | + | ==Immunity== | |
+ | [[Metallic Materials|Metal]] and [[Stony Materials|stone]] are immune to deterioration. However, items crafted from these materials do not carry over that immunity. | ||
+ | <br>Other immune items: | ||
+ | * [[AI persona core]] | ||
+ | * [[Artifact]]s | ||
+ | * Minified [[furniture]] and [[buildings]] | ||
− | == | + | == Impact on human's mood == |
− | {{ | + | {{main|Mood}} |
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− | + | : A [[human]] wearing ''any'' apparel with hit points 50% or below will get the -3 [[thought]] ''[[Mood#Ratty apparel|Ratty Apparel]]''. | |
+ | : If ''any'' worn item is below 25%, the thought will worsen to a -5 ''[[Mood#Tattered apparel|Tattered Apparel]]''. | ||
+ | : Compare them with -6 ''[[Mood#Naked|Naked]]'' thought. | ||
== Version history== | == Version history== | ||
− | * | + | * In the past, deterioration lowered the effectiveness of weapons and armors, but that is no longer the case. |
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[[Category:Game mechanics]] | [[Category:Game mechanics]] |