STMCustomUIEvent.cs

//Copyright (c) 2016-2020 Kai Clavier [kaiclavier.com] Do Not Distribute
using UnityEngine;
using System.Collections;
using System.Collections.Generic;

/*
Example script for spawning a gameObject at a position on a Canvas.
*/

[RequireComponent(typeof(SuperTextMesh))]
public class STMCustomUIEvent : MonoBehaviour
{
    public SuperTextMesh superTextMesh;
    public GameObject spawnThisPrefab;
    public string customTag = "spawn";
    private List<GameObject> spawnedPrefabs = new List<GameObject>();
    //set up STM initially
    public void Reset()
    {
        superTextMesh = GetComponent<SuperTextMesh>();
    }
    //assign custom event
    public void OnEnable()
    {
        superTextMesh.OnCustomEvent += CustomEvent;
        superTextMesh.OnRebuildEvent += ClearAllObjects;
    }
    //unassign
    public void OnDisable()
    {
        superTextMesh.OnCustomEvent -= CustomEvent;
        superTextMesh.OnRebuildEvent -= ClearAllObjects;
    }
    public void CustomEvent(string text, STMTextInfo info)
    {
        if(text == customTag)
        {
            SpawnObject(text, info);
        }
    }

    private GameObject cachedNewObject;
    public void SpawnObject(string text, STMTextInfo info)
    {
        //spawn a copy of the gameobject
        cachedNewObject = Instantiate(spawnThisPrefab);
        //set parent
        cachedNewObject.transform.SetParent(superTextMesh.t);
        spawnedPrefabs.Add(cachedNewObject);
        //set position, rotation, and scale to be relative to text.
        cachedNewObject.transform.position = superTextMesh.t.TransformPoint(info.Middle); //make relative to transform
        cachedNewObject.transform.localRotation = spawnThisPrefab.transform.localRotation; //copy from prefab
        cachedNewObject.transform.localScale = spawnThisPrefab.transform.localScale;
    }
    public void ClearAllObjects()
    {
        foreach(GameObject obj in spawnedPrefabs)
        {
            Destroy(obj);
        }
        spawnedPrefabs.Clear();
    }
}