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# | A '''Value Type''' is a delegation of types within the [[FrooxEngine]] [[Data Model]] and [[ProtoFlux]]. In contrast to [[Reference Types]], fields containing a value type store the value directly, rather than a reference to the value. | ||
For a list of all value types in game, refer to [[:Category:Value Types]]. | |||
== In FrooxEngine == | |||
What types are defined as value types in FrooxEngine are managed through a complicated autogenerated class called <code>Coder<T></code>. As such, it is much better to refer to the category for determining what is a value type in FrooxEngine. | |||
It's simple to test whether a certain type is a value type or not. In the [[Scene Inspector]], fields holding a value type are easily identifiable by the ability to directly edit the value within them, rather than needing to drag in a reference to the type. A [[Component:ValueField|ValueField]] component is able to hold any FrooxEngine value type, which can be used as a quick reference to tell what is what. | |||
== In ProtoFlux == | |||
In ProtoFlux, in short, if a type can be classified as an [https://learn.microsoft.com/en-us/dotnet/csharp/language-reference/builtin-types/unmanaged-types unmanaged type in C#], it is recognized as a value type. Otherwise, it is an [[Object Type]]. | |||
To expand on the definition, in ProtoFlux, an ''unmanaged type'', or value type, must either (criteria not useful to Resonite excluded): | |||
* Be one of <code>[[Type:sbyte|sbyte]]</code>, <code>[[Type:byte|byte]]</code>, <code>[[Type:Short|short]]</code>, <code>[[Type:ushort|ushort]]</code>, <code>[[Type:int|int]]</code>, <code>[[Type:uint|uint]]</code>, <code>[[Type:long|long]]</code>, <code>[[Type:ulong|ulong]]</code>, <code>[[Type:char|char]]</code>, <code>[[Type:float|float]]</code>, <code>[[Type:double|double]]</code>, <code>[[Type:decimal|decimal]]</code>, or <code>[[Type:bool|bool]]</code>. | |||
* Be an [[Enum]] type. | |||
* Be defined as a non-nullable <code>struct</code> internally that only contains other value types. | |||
** This encompasses many different types, such as [[Type:float3|float3]], [[Type:DateTime|DateTime]], and [[Type:TangentPointFloat|TangentPointFloat]]. | |||
** This <em>excludes</em> [[Type:Nullable|Nullable]] types from being a ProtoFlux value type, such as <code>int?</code>. | |||
This discrepency between the definition of a value type in FrooxEngine and in ProtoFlux can cause some confusion. For example, a [[Type:string|string]] is a value type in FrooxEngine, but an object type in ProtoFlux. This is also the case with nullable types. | |||
In short, every value type in ProtoFlux is also a value type in FrooxEngine, but not every value type in FrooxEngine is a value type in ProtoFlux. | |||
== See Also == | |||
* [[Reference Type]] | |||
* [[Type:Object]] | |||
Revision as of 10:10, 11 September 2024
A Value Type is a delegation of types within the FrooxEngine Data Model and ProtoFlux. In contrast to Reference Types, fields containing a value type store the value directly, rather than a reference to the value.
For a list of all value types in game, refer to Category:Value Types.
In FrooxEngine
What types are defined as value types in FrooxEngine are managed through a complicated autogenerated class called Coder<T>. As such, it is much better to refer to the category for determining what is a value type in FrooxEngine.
It's simple to test whether a certain type is a value type or not. In the Scene Inspector, fields holding a value type are easily identifiable by the ability to directly edit the value within them, rather than needing to drag in a reference to the type. A ValueField component is able to hold any FrooxEngine value type, which can be used as a quick reference to tell what is what.
In ProtoFlux
In ProtoFlux, in short, if a type can be classified as an unmanaged type in C#, it is recognized as a value type. Otherwise, it is an Object Type.
To expand on the definition, in ProtoFlux, an unmanaged type, or value type, must either (criteria not useful to Resonite excluded):
- Be one of
sbyte,byte,short,ushort,int,uint,long,ulong,char,float,double,decimal, orbool. - Be an Enum type.
- Be defined as a non-nullable
structinternally that only contains other value types.- This encompasses many different types, such as float3, DateTime, and TangentPointFloat.
- This excludes Nullable types from being a ProtoFlux value type, such as
int?.
This discrepency between the definition of a value type in FrooxEngine and in ProtoFlux can cause some confusion. For example, a string is a value type in FrooxEngine, but an object type in ProtoFlux. This is also the case with nullable types.
In short, every value type in ProtoFlux is also a value type in FrooxEngine, but not every value type in FrooxEngine is a value type in ProtoFlux.