Base class to derive custom Editors from. Use this to create your own custom inspectors and editors for your objects.
Consider a script MyPlayer with variables for armor, damage, and a reference to a gun GameObject:
using UnityEngine; using System.Collections;
// This is not an editor script. public class MyPlayer : MonoBehaviour { public int armor = 75; public int damage = 25; public GameObject gun;
void Update () { // Update logic here... } }
Using a custom Editor, the apperance of the script in the Inspector can be changed, for example to look like this:
Custom editor in the Inspector.
You can attach the Editor to a custom component by using the CustomEditor attribute.
There are multiple ways to design custom Editors.
If you want the Editor to support multi-object editing, you can use the CanEditMultipleObjects attribute.
Instead of modifying script variables directly, it's advantageous to use the SerializedObject and SerializedProperty
system to edit them, since this automatically handles multi-object editing, undo, and prefab overrides. If this approach is used a user can select multiple assets in the hierarchy window and change the values for all of them at once.
using UnityEditor; using UnityEngine; using System.Collections;
// Custom Editor using SerializedProperties. // Automatic handling of multi-object editing, undo, and prefab overrides. [CustomEditor(typeof(MyPlayer))] [CanEditMultipleObjects] public class MyPlayerEditor : Editor { SerializedProperty damageProp; SerializedProperty armorProp; SerializedProperty gunProp;
void OnEnable () { // Setup the SerializedProperties. damageProp = serializedObject.FindProperty ("damage"); armorProp = serializedObject.FindProperty ("armor"); gunProp = serializedObject.FindProperty ("gun"); }
public override void OnInspectorGUI() { // Update the serializedProperty - always do this in the beginning of OnInspectorGUI. serializedObject.Update ();
// Show the custom GUI controls. EditorGUILayout.IntSlider (damageProp, 0, 100, new GUIContent ("Damage"));
// Only show the damage progress bar if all the objects have the same damage value: if (!damageProp.hasMultipleDifferentValues) ProgressBar (damageProp.intValue / 100.0f, "Damage");
EditorGUILayout.IntSlider (armorProp, 0, 100, new GUIContent ("Armor"));
// Only show the armor progress bar if all the objects have the same armor value: if (!armorProp.hasMultipleDifferentValues) ProgressBar (armorProp.intValue / 100.0f, "Armor");
EditorGUILayout.PropertyField (gunProp, new GUIContent ("Gun Object"));
// Apply changes to the serializedProperty - always do this in the end of OnInspectorGUI. serializedObject.ApplyModifiedProperties (); }
// Custom GUILayout progress bar. void ProgressBar (float value, string label) { // Get a rect for the progress bar using the same margins as a textfield: Rect rect = GUILayoutUtility.GetRect (18, 18, "TextField"); EditorGUI.ProgressBar (rect, value, label); EditorGUILayout.Space (); } }
Alternatively, if automatic handling of multi-object editing, undo, and prefab overrides is not needed, the script variables can be modified directly by the editor without using the SerializedObject and SerializedProperty system, as in the example below.
using UnityEditor; using UnityEngine; using System.Collections;
// Example script with properties. public class MyPlayer : MonoBehaviour { public int damage; public int armor; public GameObject gun;
// ...other code... }
// Custom Editor the "old" way by modifying the script variables directly. // No handling of multi-object editing, undo, and prefab overrides! [CustomEditor (typeof(MyPlayer))] public class MyPlayerEditor : Editor {
public override void OnInspectorGUI () { MyPlayer mp = (MyPlayer)target;
mp.damage = EditorGUILayout.IntSlider ("Damage", mp.damage, 0, 100); ProgressBar (mp.damage / 100.0f, "Damage");
mp.armor = EditorGUILayout.IntSlider ("Armor", mp.armor, 0, 100); ProgressBar (mp.armor / 100.0f, "Armor");
bool allowSceneObjects = !EditorUtility.IsPersistent (target); mp.gun = (GameObject)EditorGUILayout.ObjectField ("Gun Object", mp.gun, typeof(GameObject), allowSceneObjects); }
// Custom GUILayout progress bar. void ProgressBar (float value, string label) { // Get a rect for the progress bar using the same margins as a textfield: Rect rect = GUILayoutUtility.GetRect (18, 18, "TextField"); EditorGUI.ProgressBar (rect, value, label); EditorGUILayout.Space (); } }
serializedObject | A SerializedObject representing the object or objects being inspected. |
target | The object being inspected. |
targets | An array of all the object being inspected. |
DrawDefaultInspector | Draw the built-in inspector. |
DrawHeader | Call this function to draw the header of the editor. |
DrawPreview | The first entry point for Preview Drawing. |
GetInfoString | Implement this method to show asset information on top of the asset preview. |
GetPreviewTitle | Override this method if you want to change the label of the Preview area. |
HasPreviewGUI | Override this method in subclasses if you implement OnPreviewGUI. |
OnInspectorGUI | Implement this function to make a custom inspector. |
OnInteractivePreviewGUI | Implement to create your own interactive custom preview. Interactive custom previews are used in the preview area of the inspector and the object selector. |
OnPreviewGUI | Implement to create your own custom preview for the preview area of the inspector, primary editor headers and the object selector. |
OnPreviewSettings | Override this method if you want to show custom controls in the preview header. |
RenderStaticPreview | Override this method if you want to render a static preview that shows. |
Repaint | Repaint any inspectors that shows this editor. |
RequiresConstantRepaint | Does this edit require to be repainted constantly in its current state? |
UseDefaultMargins | Override this method in subclasses to return false if you don't want default margins. |
CreateCachedEditor | On return previousEditor is an editor for targetObject or targetObjects. The function either returns if the editor is already tracking the objects, or Destroys the previous editor and creates a new one. |
CreateCachedEditorWithContext | Creates a cached editor using a context object. |
CreateEditor | Make a custom editor for targetObject or targetObjects. |
CreateEditorWithContext | Make a custom editor for targetObject or targetObjects with a context object. |
OnSceneGUI | Enables the Editor to handle an event in the scene view. |
hideFlags | Should the object be hidden, saved with the scene or modifiable by the user? |
name | The name of the object. |
GetInstanceID | Returns the instance id of the object. |
ToString | Returns the name of the game object. |
Destroy | Removes a gameobject, component or asset. |
DestroyImmediate | Destroys the object obj immediately. You are strongly recommended to use Destroy instead. |
DontDestroyOnLoad | Makes the object target not be destroyed automatically 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. |
CreateInstance | Creates an instance of a scriptable object. |
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. |