Change scene/level on trigger

Hey everyone, I watched a video about the script to use when you want to change a scene on trigger, but for some reason my Console had soo many errors. Do you have to have a GameFlowManager script as well as a SceneChange script? What could be wrong here...?

This was the video:
https://www.youtube-nocookie.com/em...&loop=1&modestbranding=1&playlist=9lPCv9kkbSI

If anyone else has script for scene changes, that would be great!

 

You don't need all that. By "trigger" do you mean a collider set to trigger? If so, just add a script to your trigger object something like this:

Code (CSharp):

1. void OnTriggerEnter(Collider other) {
2.     Debug.Log("Trigger entered by " + other.gameObject.name);
3.     SceneManager.LoadScene("SomeOtherScene");
4. }

If you get errors, and can't figure out why yourself, then post them here. (Remember that "I got errors" is no good to anyone — you need to post the exact error message.)

 

Thanks, Joe. I added what you said to write this:

1. using System.Collections;
2. using System.Collections.Generic;
3. using UnityEngine;
4. using UnityEngine.SceneManagement;
5. 
   
6. public class SceneSwitch : MonoBehaviour
7. {
8. 
   
9. void OnTriggerEnter(Collider other)
10. {
11. Debug.Log("Ruby" + other.gameObject.Collider);
12. SceneManager.LoadScene("Scene1");
13. }
14. }

Error message is:

Assets/Scripts/SceneSwitch.cs(11,41): error CS1061: 'GameObject' does not contain a definition for 'Collider' and no accessible extension method 'Collider' accepting a first argument of type 'GameObject' could be found (are you missing a using directive or an assembly reference?)


(I realize I need to declare my Collider gameobject somehow, but I'm very new to coding)

 

OK, let's work through how to figure this stuff out, since it will happen a lot. The error message says it is at SceneSwitch.cs(11,41). That means it's on line 11:

Debug.Log("Ruby" + other.gameObject.Collider);

And the complaint is that Collider does not exist. Now compare that to what I wrote:

Debug.Log("Trigger entered by " + other.gameObject.name);

There are two differences. One is the string inside the quotes, but as I'm sure you know the compiler doesn't much care about that. The other is, I wrote other.gameObject.name, while you wrote other.gameObject.Collider. And the compiler doesn't like yours.

That's because other.gameObject is of type GameObject, which does not have a Collider property. It does have a name property though. (It's listed under "inherited properties".)

I'm not sure why you changed it, but change it back and it'll work.

 

Oooh, I thought I was supposed to fill in my own names of the game objects... I know that sounds very stupid. Thank you for taking the time to help!


I think I'm getting closer, but now it has an error message for line 11 that SceneManager does not contain a definition for 'LoadScene'

Assets/Scripts/SceneManager.cs(11,18): error CS0117: 'SceneManager' does not contain a definition for 'LoadScene'

1. using System.Collections;
2. using System.Collections.Generic;
3. using UnityEngine;
4. 
   
5. public class SceneManager : MonoBehaviour
6. 
   
7. {
8. void OnTriggerEnter(Collider other) {
9. 
   
10. Debug.Log("Trigger entered by Player" + other.gameObject.name);
11. SceneManager.LoadScene("Scene1");
12. }
13. }

I'm calling my player 'Player' and my trigger 'Trigger'

 

Hmm, this is something different, since SceneManager definitely does have a LoadScene method, as you can see in the docs here.

However as you can see in that example, you also need

using UnityEngine.SceneManagement;

at the top of your script.

That will probably fix it. The other possibility I guess is that you're using some other (older?) version of Unity, where this particular function has changed. What version of Unity are you using?

 

I was using the 2020.1.17f1 install, but going ahead and installing the 2020.2.4f1 right now. Thanks for your help and if I run into other errors, I will reference the link you sent.

 

Finally got it by making a button and using this script:

using System.Collections;
using System.Collections.Generic;
using UnityEngine;
using UnityEngine.SceneManagement;

public class SceneSwitch : MonoBehaviour {

public void SceneSwitcher () {
SceneManager.LoadScene (1);
}
}


Thanks again for taking the time to read and help me! I'm excited to play around with this new skill.