koobas.hobune.stream
Can you call a coroutine from a script on a prefab?
I’m working on an app in Unity. The problem is how to refresh the screen after you delete something from the database( PHP/MYSQL). Normally, I would destroy the objects then call the function that loads the data and displays the data(Coroutines) only after it destroys the data, it doesn’t start the coroutine as instructed.The script is on a prefab and I thought that if I simply copied the code from the other script, it would work. Alas, it did not.
public IEnumerator DeleteOilChange()
{
string ID = PlayerPrefs.GetString ("VehicleID");
WWWForm OilDeleteForm = new WWWForm ();
OilDeleteForm.AddField ("VehicleID", ID);
OilDeleteForm.AddField ("ServiceDate", OilServiceDate);
WWW OilDelete = new WWW ("http://localhost/CMVM/DeleteOilChange.php", OilDeleteForm);
yield return OilDelete;
Debug.Log (OilDelete.text);
DestroyObjects ("OilChange");
}
public IEnumerator GetAllOilChanges()
{
string ID = PlayerPrefs.GetString ("VehicleID");
WWWForm OilDataForm = new WWWForm ();
OilDataForm.AddField ("VehicleID", ID);
WWW OilData = new WWW ("http://localhost/CMVM/ViewOilChanges.php", OilDataForm);
yield return OilData;
Debug.Log (OilData.text);
string OD = OilData.text;
JSONArray VehicleArray = JSON.Parse (OD).AsArray;
ShowAllOilChanges (OD);
}
public void DestroyObjects(string tag)
{
GameObject[] Obj = GameObject.FindGameObjectsWithTag(tag);
if(Obj==null)
return;
else
{
Debug.Log(Obj.Length);
for(int i=0; i< Obj.Length; i++)
{
Destroy(Obj[i]);
}
Debug.Log(tag + "Objects Destroyed!");
}
StartCoroutine("GetAllOilChanges");
}
public void ShowAllOilChanges(string OD)
{
Debug.Log("Show All Vehicles!");
var vehicles = JSON.Parse(OD);
foreach(JSONNode v in vehicles)
{
GameObject vObj = Instantiate(OilChangePrefab);
vObj.GetComponent<OilChangeScript> ().DisplayOilChanges (
"ID: " + v["VehicleID"].Value,
"ServiceDate: " + v["ServiceDate"].Value,
"Location: " + v["ServiceLocation"].Value,
"Mileage: " + v["Mileage"].Value,
"Labor: " + v["Labor"].Value,
"Oil Brand: " + v["OilBrand"].Value,
"Oil Price: " + v["OilPrice"].Value,
"Filter Brand: " + v["FilterBrand"].Value,
"Filter Price: " + v["FilterPrice"].Value,
"Purchase Place: " + v["PurchasePlace"].Value
);
//vObj.transform.SetParent(OilDisplayParent);
}
}
When deleting, the script is on a prefab and it will not let me put the displayparent transform in the editor.
BTW, try to use UnityWebRequest as the WWW is deprecated now
Yes, you need to separate your logic and presentation. There should be a separate persistent object in scene who acts like a manager, a sperate object who's work is only to communicate with the database, and the visualization staff is the separate scripts as well and those are attached to the prefab(s). Your Manager link it all together. It has references to the prefabs to instantiate them when needed with data took from DB object. Each script should have own "API" to work with (a set of public methods/properties) and only Manager should "know" about all other scripts.
