Important This repository is no longer maintained. Use the rewritten repository, PiRhoUtilities.

Unity Utilities

We are currently working on updating these utilities to use UIElements. This updated version will include a robust set of ui controls and helper utilities and is based on the contents and architecture of the reorg branch of this repository.

A collection of MIT licensed general purpose utilities for use with Unity. Right now this consists of mostly editor controls and helper classes but more will be added. Contributions and feedback are welcome.

Usage

Using the Release Package

1. download the unitypackage from the releases page
2. in Unity, select Assets/Import Package/Custom Package... from the main menu
3. navigate to the downloaded file and open it
4. in the dialog, leave all files selected and click import

Using the Source

1. clone this repository
2. copy the Assets/PiRhoSoft Utilities folder to the Assets folder in your project

Drawer Attributes

These attributes are added to serializable fields in editable classes (MonoBehaviours or ScriptableObjects) to enable custom drawing for the field. All attributes are in the PiRhoSoft.UtilityEngine namespace.

IntPopup

Add this to an int field to show a popup instead of the default text box. The constructor takes two parameters: an array of ints that are the values to select, and an array of strings that are shown as the label for each value.

[IntPopup(new int[] { 0, 5, 10 }, new string[] { "Zero", "Five", "Ten" })] public int IntPopup;

StringPopup

Add this to a string field to show a popup instead of the default text box. The constructor taken one parameter: the list of strings to show and select from in the popup.

[StringPopup(new string[] { "Yes", "No" })] public string StringPopup;

AssetPopup

Add this to a ScriptableObject or ScriptableObject derived field to show a popup listing the available assets of the correct type instead of the default asset picker. This will list assets based on their structure in the project folder so for some things it can be easier to find them with this rather than the default asset picker which instead provides a search function.

[AssetPopup] public ScriptableObject Asset;

Configuration properties:

Property	Description	Default
ShowNone	Show a none option in the popup that sets the field value to null when selected	true
ShowEdit	Show an edit button next to the popup to select the selected object in the inspector	true
ShowCreate	Add a Create submenu to the end of the popup that will create and select a new asset of a specified type when selected	true

FlagsPopup

Add this to an enum field to show Unity's EnumFlagsField (which lets you select multiple values) instead of the default enum popup (which only lets you select one value).

[FlagsPopup] public Buttons PopupFlags;

EnumButtons

Add this to an enum field to show a series of buttons for selecting the enum value rather than the default popup. If the enum type has the Flags attribute, the buttons will be toggleable and support multiple selections. Optionally set the MinimumWidth property (the default is 40) on the attribute to specify the smallest each button will be displayed, potentially making the field wrap to more lines in the inspector.

[Flags]
[EnumButtons] public Buttons ButtonFlags;

ListDisplay

Add this to a SerializedList or SerializedArray derived type to show a much more user friendly list editor than Unity's default. The implementation is based on Unity's undocumented ReorderableList class with lots of improvements.

Configuration properties:

Property	Description	Default
AllowAdd	Show an add button in the header that adds an item to the list	true
AllowRemove	Show a remove button next to each item that removes the item from the list	true
AllowReorder	Allow items to be dragged to change its location in the list	true
AllowCollapse	Show a button in the header that collapses and expands the list contents - the collapsed state is persisted	true
InlineChildren	When the list contains structures, display the fields of each item rather than the item itself	false
UseAssetPopup	When the list contains Unity Objects, show a popup selector instead of the default asset picker	null
ShowEditButton	When the list contains Unity Objects, show a button next to each item that selects the item in the inspector	false
EmptyText	When the list is empty display this text - use an empty string to hide the label - null will show the default text "List is Empty"	null

Further customization is possible by directly using the ListControl (or one of it's subclasses) in a custom Editor or ObjectControl.

[ListDisplay] public StringList StringList = new StringList();

DictionaryDisplay

Add this to a SerializedDictionary derived type to show a dictionary editor (by default dictionary editing is unsupported by Unity). This uses the same internals as ListDisplay.

Configuration properties:

Property	Description	Default
AllowAdd	Show an add button in the header that adds an item to the dictionary	true
AllowRemove	Show a remove button next to each item that removes the item from the dictionary	true
AllowCollapse	Show a button in the header that collapses and expands the dictionary contents - the collapsed state is persisted	true
InlineChildren	When the dictionary contains structures, display the fields of each item rather than the item itself	false
ShowEditButton	When the dictionary contains Unity Objects, show a button next to each item that selects the item in the inspector	false
AddLabel	When AllowAdd is true display this text in the add popup - use an empty string to hide the label - null will show the default text "Add Item"
EmptyText	When the dictionary is empty display this text - use an empty string to hide the label - null will show the default text "List is Empty"	null

Like ListDisplay, further customization can be made by using DictionaryControl from a custom Editor or ObjectControl.

[DictionaryDisplay] public StringDictionary StringDictionary = new StringDictionary();

InlineDisplay

Add this to a class or struct type with a Serializable attribute to show the fields of the class or struct inline rather than in a foldout. Optionally set the PropagateLabel field on the attribute (the default is false) to specify the label of the owning field should be used rather than the label for each of the fields in the class or struct. This can be useful for wrapper classes that contain a single field.

[InlineDisplay] public Vector2 InlineVector;

ConditionalDisplay

Add this to any field to hide the field in the inspector unless a different field is holding a specified value. Set the property name in the attribute constructor as well as the dependent value using named arguments. The dependent property can be a string, enum, int, float, bool, or Object. If it is an Object, the field is displayed based on whether the Object is null or not. If HasReference is true (the default) the field will be displayed when the property value is not null, If HasReference is false the field will be displayed when the property value is null.

public bool ShowConditional = true;
[ConditionalDisplay(nameof(ShowConditional), BoolValue = true)] public string ConditionalString;

Unfortunately, when using this attribute only the default editor for the field will be used. If the field type has a custom PropertyDrawer it will be ignored due to the way Unity internally resolves property drawers.

DisableInInspector

Add this to any field to disable editing of the field (while still showing it) in the inspector.

[DisableInInspector] public float Disabled;

Maximum

Add this to an int or float field to disallow selecting of a value higher than a specified value. Set the maximum value in the attribute constructor.

[Maximum(100.0f)] public float MaximumFloat;

Minimum

Add this to an int or float field to disallow selecting of a value lower than a specified value. Set the minimum value in the attribute constructor.

[Minimum(0.0f)] public float MinimumFloat;

Slider

Add this to an int or float field to show a slider instead of the default text box. Set the minimum, maximum, and snap values in the attribute constructor.

[Slider(0.0f, 10.0f, 1.125f)] public float FloatSlider;

MinMaxSlider

Add this to an int or float field to show a two value slider instead of the default text box. Set the minimum, maximum, and snap values in the attribute constructor. This attribute actually edits two fields - the one this is added to and the next field in the class. This should be added to the field that holds the beginning of the selected range with it's sibling holding the end. The sibling field should then be given a HideInInspector attribute to keep it from showing up.

[MinMaxSlider(0, 100, 5)] public int Minimum;
[HideInInspector] public int Maximum;

Snap

Add this to an int or float field to round the selected value to be a multiple of a specified value. Set the snap value in the attribute constructor.

[Snap(0.5f)] public float SnapFloat;

Wrapper Classes

SerializedList<T>

This can be used just like the built in List class but because it isn't the built in List class can be targeted by PropertyDrawers. Because Unity doesn't serialize generic classes, though, it is necessary to subclass this for each type and give the subclass the Serializable attribute.

using System;
using PiRhoSoft.UtilityEngine;
using UnityEngine;

[Serializable] public class IntList : SerializedList<int> {}

public class ExampleBehaviour : MonoBehaviour
{
	[ListDisplay] public IntList List = new IntList();
}

SerializedArray<T>

This is exactly like SerializedList except for Arrays. The exception is SerializedArray must be constructed with a length.

using System;
using PiRhoSoft.UtilityEngine;
using UnityEngine;

[Serializable] public class IntArray : SerializedArray<int> { public IntArray(int count) : base(count) {} }

public class ExampleBehaviour : MonoBehaviour
{
	[ListDisplay] public IntArray Array = new IntArray(5);
}

SerializedDictionary<KeyType, ValueType>

And again for Dictionary.

using System;
using PiRhoSoft.UtilityEngine;
using UnityEngine;

[Serializable] public class IntDictionary : SerializedDictionary<string, int> {}

public class ExampleBehaviour : MonoBehaviour
{
	[DictionaryDisplay] public IntDictionary Dictionary = new IntDictionary();
}