How do I change scene with a keyboard input? This is what I have for the moment.

Code (CSharp):

1.  
2.  
3. using System.Collections;
4. using UnityEngine;
5. using UnityEngine.SceneManagement;
6.  
7. public class SceneManegment : MonoBehaviour
8. {
9.     public int index;
10.     public string levelname;
11.     public KeyCode changeScenesKey;
12.     bool colliding;
13.  
14.     private void OnTriggerEnter(Collider other)
15.     {
16.         colliding = true;
17.     }
18.  
19.     private void OnTriggerStay(Collider other)
20.     {
21.         colliding = true;
22.     }
23.     private void OnTriggerExit(Collider other)
24.     {
25.         colliding = false;
26.     }
27.  
28.     private void Update()
29.     {
30.         if (colliding && Input.GetKeyDown(changeScenesKey))
31.         {
32.             SceneManager.LoadScene(1);
33.             Debug.Log(" hi ");
34.  
35.         }
36.     }
37.  
38.  

 

Code (CSharp):

1. private void OnTriggerEnter(Collider other)
2.     {
3.        if(other.tag == "Player")
4.         colliding = true;
5.     }

I think your code should work as long as your object (I'm assuming is the player) is tagged "Player" and also has a physics2D collider set to IsTrigger. This should return True upon enter and False upon exit. Be sure to add the same line of code into your OnTriggerExit function.

 

Then should I add an another Box Collider2D on the "Player" that is set to IsTrigger?
I did the changes with the code and my object was already tagged "Player". Still dosen't work :/
The Debug dosen't detect any trigger when I press any of my key input.

 

Hi @erikdiep555

Usually a good question has an explanation, what you have done and tried, what kind of scene setup you have, where have you attached the components... and so on. You didn't even bother to write a question... You haven't even told where have you attached this script to.

Also, calling the script "SceneManegment" (with a typo) also doesn't make it clear where this script should be used and what its purpose is - you could rename the script to something like "DoorEnterTrigger" - whatever makes sense for its use.

"Then should I add an another Box Collider2D on the "Player" that is set to IsTrigger?"

For me, it makes more sense if the listening object has the trigger - so if your script is attached to a door or portal, it is the one that has the collider set to trigger and OnTriggerEnter method listening for player to enter it, not other way around.

Also, the following makes me suspect you might have something else setup incorrectly - you ask this question in "2D" area of forum, yet you are using Physics 3D system methods... hopefully you have used Physics system Colliders instead of Physics2D Collider2D's as these are not working together - OnTrigger enter doesn't detect Collider2Ds, only Colliders.

 

Also I would like to add that from what it looks like you don't really need to call OnTriggerStay() since if you didn't trigger OnTriggerExit() it means you are still inside the trigger.

 

I have never posted here before, sorry for the lack of context.

Code (CSharp):

1. using System.Collections;
2. using UnityEngine;
3. using UnityEngine.SceneManagement;
4.  
5. public class SceneManagement : MonoBehaviour
6. {
7.     public int index;
8.     public string levelname;
9.     public KeyCode changeScenesKey;
10.     bool colliding;
11.  
12.     private void OnTriggerEnter2D(Collider2D other)
13.     {
14.         if (other.tag == " Player")
15.             colliding = true;
16.     }
17.  
18.     /*private void OnTriggerStay2D(Collider2D other)
19.     {
20.         if (other.tag == " Player")
21.             colliding = true;
22.     } */
23.     private void OnTriggerExit2D(Collider2D other)
24.     {
25.         if (other.tag == " Player")
26.             colliding = false;
27.     }
28.  
29.     private void Update()
30.     {
31.         if (colliding == true && Input.GetKeyDown(changeScenesKey))
32.         {
33.             SceneManager.LoadScene(1);
34.             Debug.Log(" hi ");
35.  
36.         }
37.     }
38.  
39. }

I have changed to 2D now. Still nothing have changed, I have done all of the above I think. Would you like to see a picture on how I have organize my gameobject and where I have put all of my scripts?

 

Well if you check the most common, "scripting" forum area, the very first post is this:

https://forum.unity.com/threads/unity-community-code-of-conduct.743888/

 

Your script is a MonoBehavior which means it must be attached to a game object in your scene (Hierarchy). In this instance you would want to either attach the script to your scene change object or the player itself as @eses mentioned. I also like his advice he gave that the IsTrigger collider needs to be the collider the player will run into. ( Physics2D collider) because it makes more logical sense usually. Your script will not work unless a few requirements are met here.

1. Your Player object must have a TAG named "Player". (Punctuation matters!)
2. Your script must be attached to every GameObject you want this script to work for.
3. If you're 2D game developing, make sure that you're using 2D physics such as OnTriggerEnter2D, BoxCollider2D, etc...
4. The scene you wish to travel to must exist within the BuildSettings in your project: File>BuildSettings>Add Open Scenes

As long as these conditions are correct, I believe your code should work fine.