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<?xml version="1.0" encoding="UTF-8" ?>
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<class name= "ResourceUID" inherits= "Object" xmlns:xsi= "http://www.w3.org/2001/XMLSchema-instance" xsi:noNamespaceSchemaLocation= "../class.xsd" >
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<brief_description >
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A singleton that manages the unique identifiers of all resources within a project.
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</brief_description>
<description >
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Resource UIDs (Unique IDentifiers) allow the engine to keep references between resources intact, even if files are renamed or moved. They can be accessed with [code]uid://[/code].
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[ResourceUID] keeps track of all registered resource UIDs in a project, generates new UIDs, and converts between their string and integer representations.
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</description>
<tutorials >
</tutorials>
<methods >
<method name= "add_id" >
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<return type= "void" />
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<param index= "0" name= "id" type= "int" />
<param index= "1" name= "path" type= "String" />
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<description >
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Adds a new UID value which is mapped to the given resource path.
Fails with an error if the UID already exists, so be sure to check [method has_id] beforehand, or use [method set_id] instead.
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</description>
</method>
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<method name= "create_id" >
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<return type= "int" />
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<description >
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Generates a random resource UID which is guaranteed to be unique within the list of currently loaded UIDs.
In order for this UID to be registered, you must call [method add_id] or [method set_id].
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</description>
</method>
<method name= "get_id_path" qualifiers= "const" >
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<return type= "String" />
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<param index= "0" name= "id" type= "int" />
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<description >
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Returns the path that the given UID value refers to.
Fails with an error if the UID does not exist, so be sure to check [method has_id] beforehand.
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</description>
</method>
<method name= "has_id" qualifiers= "const" >
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<return type= "bool" />
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<param index= "0" name= "id" type= "int" />
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<description >
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Returns whether the given UID value is known to the cache.
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</description>
</method>
<method name= "id_to_text" qualifiers= "const" >
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<return type= "String" />
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<param index= "0" name= "id" type= "int" />
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<description >
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Converts the given UID to a [code]uid://[/code] string value.
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</description>
</method>
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<method name= "remove_id" >
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<return type= "void" />
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<param index= "0" name= "id" type= "int" />
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<description >
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Removes a loaded UID value from the cache.
Fails with an error if the UID does not exist, so be sure to check [method has_id] beforehand.
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</description>
</method>
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<method name= "set_id" >
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<return type= "void" />
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<param index= "0" name= "id" type= "int" />
<param index= "1" name= "path" type= "String" />
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<description >
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Updates the resource path of an existing UID.
Fails with an error if the UID does not exist, so be sure to check [method has_id] beforehand, or use [method add_id] instead.
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</description>
</method>
<method name= "text_to_id" qualifiers= "const" >
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<return type= "int" />
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<param index= "0" name= "text_id" type= "String" />
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<description >
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Extracts the UID value from the given [code]uid://[/code] string.
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</description>
</method>
</methods>
<constants >
<constant name= "INVALID_ID" value= "-1" >
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The value to use for an invalid UID, for example if the resource could not be loaded.
Its text representation is [code]uid://< invalid> [/code].
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</constant>
</constants>
</class>