[Unity插件]Behavior Designer：自定义Conditional节点

Behavior Designer自带的一个Conditional节点：

using UnityEngine;

namespace BehaviorDesigner.Runtime.Tasks.Basic.UnityGameObject
{
    [TaskCategory("Basic/GameObject")]
    [TaskDescription("Returns Success if the GameObject is active in the hierarchy, otherwise Failure.")]
    public class ActiveInHierarchy : Conditional
    {
        [Tooltip("The GameObject that the task operates on. If null the task GameObject is used.")]
        public SharedGameObject targetGameObject;

        public override TaskStatus OnUpdate()
        {
            return GetDefaultGameObject(targetGameObject.Value).activeInHierarchy ? TaskStatus.Success : TaskStatus.Failure;
        }

        public override void OnReset()
        {
            targetGameObject = null;
        }
    }
}

TaskCategory：把该类放在"Add Task/Conditionals/Basic/GameObject"

TaskDescription：选中节点后显示的描述性文字

Tooltip：对字段的描述性文字

重点就是重写OnUpdate方法了：

using UnityEngine;

namespace BehaviorDesigner.Runtime.Tasks.Basic.UnityGameObject
{
    [TaskCategory("Basic/GameObject")]
    [TaskDescription("是否有BoxCollider组件")]
    public class HasBoxCollider : Conditional
    {
        [Tooltip("The GameObject that the task operates on. If null the task GameObject is used.")]
        public SharedGameObject targetGameObject;

        public override TaskStatus OnUpdate()
        {
            return GetDefaultGameObject(targetGameObject.Value).GetComponent<BoxCollider>() ? TaskStatus.Success : TaskStatus.Failure;
        }

        public override void OnReset()
        {
            targetGameObject = null;
        }
    }
}

以上要注意的是即使物体有BoxCollider组件，但组件前的勾是取消的，也会返回Success。

GetDefaultGameObject默认的是该节点的GameObject，当然也可以指定其他的。