koobas.hobune.stream
Unity scene IF statement not working?
I'm using an IF statement that checks the current scene to see if I instantiated objects in them previously and if so recreate them in the same place when I return to that scene. However I'm having some grief with getting IF statement for "scene2". Both scenes are have identical scripts in it that use SceneManager.GetActiveScene() and can recognise what scene is active ok, yet still the IF statement isn't working because of the scene part of it...
void Start() {
/*Debug.Log(data.scene2_spheres.Count);
Debug.Log(scenes_script.scene_Name);*/
//This will check if spheres were created in the scene previously before going onto it
//if (scenes_script.scene_Name == "scene1" && data.num_of_spheres1 >= 1)
//THIS WORKS FINE
if (scenes_script.scene_Name == "scene1" && data.scene1_spheres.Count >= 1)
{
Debug.Log("Is bigger than 1");
//this will add up until it makes the list total of the spheres
for (int i = 0; i < data.scene1_spheres.Count; i++)
{
//Instantiate(data.scene1_spheres[i], data.scene1_vecs[i], trans.rotation);
Instantiate(prefab, data.scene1_vecs[i], trans.rotation);
}
}
//Same for scene2...
//FOR SOME REASON IT DOESN'T RECOGNISE SCENE2 IS ACTIVE...
if (scenes_script.scene_Name == "scene2" && data.scene2_spheres.Count >= 1)
{
Debug.Log("Is bigger than 1");
for (int i = 0; i < data.scene2_spheres.Count; i++)
{
Instantiate(prefab, data.scene2_vecs[i], trans.rotation);
}
}
}
Haven't done much scripting with scenes but a bit stumped here.
The problem must be in where scenes_script.scene_Name gets set. Could you post some of that script?
Sure.
using System.Collections;
using System.Collections.Generic;
using UnityEngine;
using UnityEngine.Scene$$anonymous$$anagement;
public class scenes : $$anonymous$$onoBehaviour {
public Scene Scene;
public string scene_Name;
// Use this for initialization
void Start () {
Scene = Scene$$anonymous$$anager.GetActiveScene();
scene_Name = Scene.name;
// Debug.Log(data.scene1_spheres[0]);
}
// Update is called once per frame
void Update () {
if (Input.Get$$anonymous$$eyDown($$anonymous$$eyCode.C) && scene_Name == "scene1")
{
//Debug.Log("scene one to scene two");
Scene$$anonymous$$anager.LoadScene("scene2");
//Debug.Log("The first vector in the list is now" + data.scene1_vecs[0]);
}
if (Input.Get$$anonymous$$eyDown($$anonymous$$eyCode.C) && scene_Name == "scene2")
{
// Debug.Log("scene two to scene one");
Scene$$anonymous$$anager.LoadScene("scene1");
}
}
}
This is probably a script execution order issue. When you load the new scene you are relying on the two Start functions happening in the right order. For your code to work you need things to happen in this order:
scenes.Start() // This sets the value of scene_Name
OtherClass.Start() // This uses the value of scene_Name (I don't know what the class in the original question is called)
By default you can't rely on the Start functions happening in the right order. However Unity does allow you to define an order. See https://docs.unity3d.com/550/Documentation/Manual/class-ScriptExecution.html
In your case you want to add the scenes class to the custom order list and give it a negative value to ensure that it runs first.
If you were using DontDestroyOnLoad on the scenes object then you have a different problem, which is that Start isn't called when a new scene is loaded for that object. If that's the case you need to use OnLevelWasLoaded to update scene_Name as well as Start.
You are a champion sir, never encountered this sorta problem before. Thanks a million.
