Abstract base class for custom Asset importers.
Scripted importers are scripts that are associated with specific file extensions. They are invoked by Unity's Asset pipeline to convert the contents of associated files into Assets.
Use the ScriptedImporterAttribute class to register custom importers with the Asset pipeline.
using UnityEngine; using UnityEditor.Experimental.AssetImporters; using System.IO;
[ScriptedImporter(1, "cube")] public class CubeImporter : ScriptedImporter { public float m_Scale = 1;
public override void OnImportAsset(AssetImportContext ctx) { var cube = GameObject.CreatePrimitive(PrimitiveType.Cube); var position = JsonUtility.FromJson<Vector3>(File.ReadAllText(ctx.assetPath));
cube.transform.position = position; cube.transform.localScale = new Vector3(m_Scale, m_Scale, m_Scale);
// 'cube' is a a GameObject and will be automatically converted into a Prefab // (Only the 'Main Asset' is elligible to become a Prefab.) ctx.AddObjectToAsset("main obj", cube); ctx.SetMainObject(cube);
var material = new Material(Shader.Find("Standard")); material.color = Color.red;
// Assets must be assigned a unique identifier string consistent across imports ctx.AddObjectToAsset("my Material", material);
// Assets that are not passed into the context as import outputs must be destroyed var tempMesh = new Mesh(); DestroyImmediate(tempMesh); } }
| OnImportAsset | This method must by overriden by the derived class and is called by the Asset pipeline to import files. |
| SupportsRemappedAssetType | Override this method if your ScriptedImporter supports remapping specific asset types. |
| assetBundleName | Get or set the AssetBundle name. |
| assetBundleVariant | Get or set the AssetBundle variant. |
| assetPath | The path name of the asset for this importer. (Read Only) |
| importSettingsMissing | The value is true when no meta file is provided with the imported asset. |
| userData | Get or set any user data. |
| hideFlags | Should the object be hidden, saved with the Scene or modifiable by the user? |
| name | The name of the object. |
| AddRemap | Map a sub-asset from an imported asset (such as an FBX file) to an external Asset of the same type. |
| GetExternalObjectMap | Gets a copy of the external object map used by the AssetImporter. |
| RemoveRemap | Removes an item from the map of external objects. |
| SaveAndReimport | Save asset importer settings if asset importer is dirty. |
| SetAssetBundleNameAndVariant | Set the AssetBundle name and variant. |
| GetInstanceID | Returns the instance id of the object. |
| ToString | Returns the name of the GameObject. |
| GetAtPath | Retrieves the asset importer for the asset at path. |
| Destroy | Removes a gameobject, component or asset. |
| DestroyImmediate | Destroys the object obj immediately. You are strongly recommended to use Destroy instead. |
| DontDestroyOnLoad | Do not destroy the target Object when loading a new Scene. |
| FindObjectOfType | Returns the first active loaded object of Type type. |
| FindObjectsOfType | Returns a list of all active loaded objects of Type type. |
| Instantiate | Clones the object original and returns the clone. |
| bool | Does the object exist? |
| operator != | Compares if two objects refer to a different object. |
| operator == | Compares two object references to see if they refer to the same object. |
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