koobas.hobune.stream
Property drawer: Multiple selection in prefabs override/replace other prefabs' values
My property drawer has a reference to an object:
_vfx.objectReferenceValue = EditorGUI.ObjectField(position, _vfx.objectReferenceValue, typeof(VFX), false);
If I select a prefab that uses this property and then multi-select more prefabs that also use this property they will get their own "vfx" value overridden by the first selection's value.
It also does this with my enums:
_type.intValue = (int)(EnemyType)EditorGUI.EnumPopup(position, (EnemyType)_type.intValue);
What do I need to do so multi-selected prefabs retain their own value?
I just noticed exactly this problem on our project. It is likely a bug introduced in the most recent versions of Unity. I made a quick workaround using SerializedProperty.hasMultipleDifferentValues, which tells me when multi-editing is taking place. When that's the case, I just switch to default property drawing using EditorGUI.PropertyField()
This is still a problem. I worked around it like this:
[CustomPropertyDrawer(typeof(Layer))]
class LayerDrawer : PropertyDrawer {
public override void OnGUI(
Rect position,
SerializedProperty property,
GUIContent label
) {
property.Next(true);
var nextValue = EditorGUI.LayerField(position, label, property.intValue);
if (nextValue != property.intValue) {
property.intValue = nextValue;
}
}
}
}
This way only if the user actually changes the value will it be assigned, which in the case of a multi-selection will affect all selected objects as expected.
Because you should do :
GUI.changed = false;
var value = (int)(EnemyType)EditorGUI.EnumPopup(position, (EnemyType)_type.intValue);
if ( GUI.changed )
_type.intValue = value;
