Changes

{{Note| WIP — [[User:Smarty|Smarty]] ([[User talk:Smarty|talk]]) 23:22, 21 June 2017 (CEST)}} The '''trailer_def''' unit class acts as an intermediary between [[Documentation/Engine/Units/cargo_data|cargo_data]] and [[Documentation/Engine/Units/trailer|trailer]] units. Units of this type are usually defined in '''/def/cargo/<cargo_name>/<trailer_name>.sii''', corresponding to '''def/cargo/<cargo_name>.sii'''. They define which trailer configuration to enable for the cargo, the cargo's mass for that trailer configuration, and how that mass is distributed/placed on the trailer and its slave units, and where the configuration is permitted.

|The unit name of the '''trailer''' unit to be enabled for the cargo. This attribute can safely refer to units which aren't present. (Only for legacy usage when defined in /def/cargo/<cargo_name>/)|-|gross_trailer_weight_limit|float||The maximum technical or logical combined weight of the trailer and its cargo (take into account bridge formula, and other similar rules).

|masschassis_mass

|The mass of the cargo for this trailer configuration chassis in kilograms (kg).

|cog_offsetbody_mass|array<float3>float

|Each member defines the offset of the cargo center The mass of gravity from the calculated value for each trailer body in the trailer configuration, starting with the ''master'' trailer and iterating through the ''slave'' trailers. (X, Y, Z) corresponds to lateral, vertical, and longitudinal offsets respectivelykg.

|cargo_mass_ratiolength|float|0|The length of the trailer combination in meters. When generating a job this is compared against the '''allowed_trailer_length''' of the source and destination depot [[Documentation/Engine/Units/prefab_data|prefabs]] to determine whether this trailer_def is suitable for the job.|-|axles|uint||The number of axles in the trailer combination, which is checked against country_data&rarr;mass_limit_per_axle_count to determine the allowable gross weight.|-|volume|float||The interior volume of the trailer body in m³.|-|body_type|token||Sets the body type of the trailer configuration, which determines which cargoes are allowed to be carried.|-|chain_type|token||Sets the trailer chain type of the trailer configuration.|-|country_validity|array&lt;token&gt;||Each member is a <!--[[Documentation/Engine/Units/country_data|country]]-->country (or a state in ATS) where this trailer_def will be suitable for generated jobs. Both the origin and destination of a job must be in the ''country'' array for the trailer_def to be suitable for it. If unset, then the trailer_def is suitable in all countries. For example, the following would be limited to only Nevada and Arizona:<pre>country[]: arizonacountry[]: nevada</pre>|-|'''mass_ratio'''

|<pre>cargo_mass_ratio:&nbsp;1cargo_mass_ratio[0]:&nbsp;1</pre>|Each member defines how much of the cargo mass and forces are borne by each trailer in the trailer configuration, starting with the ''master'' trailer and iterating through the ''slave'' trailers. These must add up to 1.