EvaluateDecorator

EvaluateDecorator can be written in a C# script.

How to create

1. Click the “+” button in the Project window.
2. Select Logic Toolkit > Scripts > Decorator > Evaluate Decorator C# Script from the menu.
3. Enter the script name and confirm with Enter.

How to write a script

• Create a class that inherits from LogicToolkit.BehaviorTree.EvaluateDecorator.
• Apply System.SerializableAttribute to the type.
• Implement protected override bool OnEvaluate() and write the processing at runtime.
• protected override void OnActivated() is called when activated.
• protected override void OnDeactivated() is called when it becomes inactive.
• protected override void OnEnterEvaluation() is called when it becomes the evaluation target.
  If Lower Priority is set in the Abort Flags of the Decorator set as a child node of the Selector, even if a node with a lower priority (younger node) is running, it will be subject to evaluation.
• protected override void OnLeaveEvaluation() is called when it is no longer subject to evaluation.

Code example

 1
 2
 3
 4
 5
 6
 7
 8
 9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38

using System.Collections;
using System.Collections.Generic;
using UnityEngine;
using LogicToolkit;
using LogicToolkit.BehaviorTrees;

[System.Serializable]
public class EvaluateDecoratorExample : EvaluateDecorator
{
    private float startTime = float.MaxValue;

    // OnActivated is called when activated.
    protected override void OnActivated()
    {
        startTime = Time.time;
    }

    // OnEnterEvaluation is called when entering the evaluation target
    protected override void OnEnterEvaluation()
    {
    }

    // OnEvaluate is called when evaluating the condition
    protected override bool OnEvaluate()
    {
        return Time.time - startTime <= 1f;
    }

    // OnLeaveEvaluation is called when leaving the evaluation target
    protected override void OnLeaveEvaluation()
    {
    }

    // OnDeactivated is called when it is deactivated.
    protected override void OnDeactivated()
    {
    }
}

In this example, setting Abort Flags to Self will cause the node to abort after 1 second of activation.

In addition, a script called TimeLimit is included in advance as a similar function.