Wann und wie vermeidet man die Verwendung von Nodes für alles¶
Nodes sind billig zu produzieren, aber selbst sie haben ihre Grenzen. Ein Projekt kann Zehntausende von Nodes haben, die alle irgendetwas tun. Je komplexer ihr Verhalten ist, desto größer ist die Belastung, da jeder einzelne zur Leistung eines Projekts beiträgt.
Godot bietet leichtere Objekte zum Erstellen von APIs, die von Nodes verwendet werden. Behalten Sie dies als Möglichkeit im Hinterkopf, wenn Sie festlegen wie Sie die Funktionen Ihres Projekts erstellen möchten.
Object: The ultimate lightweight object, the original Object must use manual memory management. With that said, it isn't too difficult to create one's own custom data structures, even node structures, that are also lighter than the Node class.
- Example: See the Tree node. It supports a high level of customization for a table of content with an arbitrary number of rows and columns. The data that it uses to generate its visualization though is actually a tree of TreeItem Objects.
- Advantages: Simplifying one's API to smaller scoped objects helps improve its accessibility improve iteration time. Rather than working with the entire Node library, one creates an abbreviated set of Objects from which a node can generate and manage the appropriate sub-nodes.
One should be careful when handling them. One can store an Object into a variable, but these references can become invalid without warning. For example, if the object's creator decides to delete it out of nowhere, this would trigger an error state when one next accesses it.
Reference: Only a little more complex than Object. They track references to themselves, only deleting loaded memory when no further references to themselves exist. These are useful in the majority of cases where one needs data in a custom class.
- Example: See the File object. It functions just like a regular Object except that one need not delete it themselves.
- Vorteile: die Gleichen wie das Objekt.
Resource: Only slightly more complex than Reference. They have the innate ability to serialize/deserialize (i.e. save and load) their object properties to/from Godot resource files.
- Example: Scripts, PackedScene (for scene files), and other types like each of the AudioEffect classes. Each of these can be save and loaded, therefore they extend from Resource.
- Advantages: Much has already been said on Resource's advantages over traditional data storage methods. In the context of using Resources over Nodes though, their main advantage is in Inspector-compatibility. While nearly as lightweight as Object/Reference, they can still display and export properties in the Inspector. This allows them to fulfill a purpose much like sub-Nodes on the usability front, but also improve performance if one plans to have many such Resources/Nodes in their scenes.