News Forums Sample Projects, How To’s, and Code Samples Importing behavior tree as XML in Unityscript or C#?

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    Someone on Facebook wrote:

    “Hello, we have seen that in one of the latests actualizations of Rain you have added the option of importing the behavior tree as XML. This action (importing a behavior tree) can be done programatically with a method in Unityscript or C#?”



    The most straightforward way of loading a tree straight from XML would be to create a BTAsset and set the XML on it, then you can assign that to any AI’s BasicMind.

    I made this custom script to load arbitrary tree XML (I generated my test XML from an actual tree in the editor):

    using RAIN.BehaviorTrees;
    using RAIN.Core;
    using RAIN.Minds;
    using System.Collections.Generic;
    using UnityEngine;
    public class CustomTreeLoader : MonoBehaviour
        private TextAsset _treeXML;
        void Start()
            // Create the asset
            BTAsset tCustomAsset = ScriptableObject.CreateInstance<BTAsset>();
            // Assign the tree xml, mine was exported from another tree and saved within my project
            // You don't have to set these if they are empty, just here for example
            tCustomAsset.SetTreeBindings(new string[0] { });
            // My rig was on the same object
            AIRig tRig = GetComponentInChildren<AIRig>();
            ((BasicMind)tRig.AI.Mind).SetBehavior(tCustomAsset, new List<BTAssetBinding>());
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