splatter.ai's Introduction

Splatter.AI

Splatter.AI is a code based behaviour tree for Unity projects. Current version v0.0.6 can be found in the releases, note there may be breaking changes while in early preview.

Installation

To add to your Unity project go to the Package Manager, click the plus in the top left of the window. Select git URL and enter: https://github.com/ormesam/splatter.ai.git?path=/src/Assets/Splatter.AI

Quick Start More Docs...

Create new class deriving from BehaviourTree
Override Awake method (optional) and initiate blackboard values, make sure to call base.Awake(); at the start of the method
Override CreateRoot method, here you can build up your behaviour tree using the BehaviourTreeBuilder class as shown below
Attach the script to the GameObject
The tree will be executed every frame

View the wiki for more documentation.

Example

using Splatter.AI;

public class ZombieBehaviourTree : BehaviourTree {
    public override void Awake() {
        base.Awake();
        
        Blackboard[ZombieKey] = GetComponent<Zombie>();
    }
    
    protected override Node CreateRoot() {
        return new BehaviourTreeBuilder(this)
            .Sequence()
                .Name("root")
            	.Do("custom action", () => {
                    return NodeResult.Success;
                })
            .End()
            .Build();
    }
}

Patrol / Chase Demo

Found under Samples

Example.mp4

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splatter.ai's Issues

Trouble with opening Behaviour Tree Viewer

Unity version 2020.3.28
Template URP Samples

Created new project using the URP template.
Imported the package and Samples
Sample scene runs, no problem.
Attempt to view the Behaviour Tree Viewer results in error:

ArgumentNullException: Value cannot be null.
Parameter name: styleSheet
UnityEngine.UIElements.VisualElementStyleSheetSet.Add (UnityEngine.UIElements.StyleSheet styleSheet) (at <3b9216b5eb2547d2a9ee9f63fc12b7c2>:0)
Splatter.AI.Editor.Viewer.AddStyles () (at Library/PackageCache/com.samorme.splatter.ai@07aa7664f1/Scripts/Editor/Viewer.cs:24)
Splatter.AI.Editor.Viewer.CreateGUI () (at Library/PackageCache/com.samorme.splatter.ai@07aa7664f1/Scripts/Editor/Viewer.cs:18)
System.Reflection.MonoMethod.Invoke (System.Object obj, System.Reflection.BindingFlags invokeAttr, System.Reflection.Binder binder, System.Object[] parameters, System.Globalization.CultureInfo culture) (at <695d1cc93cca45069c528c15c9fdd749>:0)
Rethrow as TargetInvocationException: Exception has been thrown by the target of an invocation.
System.Reflection.MonoMethod.Invoke (System.Object obj, System.Reflection.BindingFlags invokeAttr, System.Reflection.Binder binder, System.Object[] parameters, System.Globalization.CultureInfo culture) (at <695d1cc93cca45069c528c15c9fdd749>:0)
System.Reflection.MethodBase.Invoke (System.Object obj, System.Object[] parameters) (at <695d1cc93cca45069c528c15c9fdd749>:0)
UnityEditor.UIElements.DefaultEditorWindowBackend.Invoke (System.String methodName) (at <bc087a59f3c04c9aad8fcd92325a4a28>:0)
UnityEditor.UIElements.DefaultEditorWindowBackend.SendInitializeIfNecessary (System.Boolean duringOnCreate) (at <bc087a59f3c04c9aad8fcd92325a4a28>:0)
UnityEditor.UIElements.DefaultEditorWindowBackend.<SendInitializeIfNecessary>b__34_0 () (at <bc087a59f3c04c9aad8fcd92325a4a28>:0)
UnityEngine.UIElements.VisualElement+SimpleScheduledItem.PerformTimerUpdate (UnityEngine.UIElements.TimerState state) (at <3b9216b5eb2547d2a9ee9f63fc12b7c2>:0)
UnityEngine.UIElements.TimerEventScheduler.UpdateScheduledEvents () (at <3b9216b5eb2547d2a9ee9f63fc12b7c2>:0)
UnityEngine.UIElements.UIElementsUtility.UnityEngine.UIElements.IUIElementsUtility.UpdateSchedulers () (at <3b9216b5eb2547d2a9ee9f63fc12b7c2>:0)
UnityEngine.UIElements.UIEventRegistration.UpdateSchedulers () (at <3b9216b5eb2547d2a9ee9f63fc12b7c2>:0)
UnityEditor.RetainedMode.UpdateSchedulers () (at <bc087a59f3c04c9aad8fcd92325a4a28>:0)