Wayback Machinekoobas.hobune.stream
May JUN Jul
Previous capture 12 Next capture
2021 2022 2023
1 capture
12 Jun 22 - 12 Jun 22
sparklines
Close Help
  • Products
  • Solutions
  • Made with Unity
  • Learning
  • Support & Services
  • Community
  • Asset Store
  • Get Unity

UNITY ACCOUNT

You need a Unity Account to shop in the Online and Asset Stores, participate in the Unity Community and manage your license portfolio. Login Create account
  • Blog
  • Forums
  • Answers
  • Evangelists
  • User Groups
  • Beta Program
  • Advisory Panel

Navigation

  • Home
  • Products
  • Solutions
  • Made with Unity
  • Learning
  • Support & Services
  • Community
    • Blog
    • Forums
    • Answers
    • Evangelists
    • User Groups
    • Beta Program
    • Advisory Panel

Unity account

You need a Unity Account to shop in the Online and Asset Stores, participate in the Unity Community and manage your license portfolio. Login Create account

Language

  • Chinese
  • Spanish
  • Japanese
  • Korean
  • Portuguese
  • Ask a question
  • Spaces
    • Default
    • Help Room
    • META
    • Moderators
    • Topics
    • Questions
    • Users
    • Badges
  • Home /
avatar image
0
Question by PaintedBirds · Feb 19, 2020 at 02:30 AM · c#scripting problemrealistic

Accessing a Script from all objects with that script

I am trying to make my own realistic gravity, and need to access all relavent game objects, but I am having lots of problems

My script is:


 public class Gravity : MonoBehaviour
 
 {
 
     public GameObject[] NewGravObj;
     public float Grav
     // Start is called before the first frame update
     void Start()
     {
         NewGravObj = (Gravity)gameObject.GetComponent(typeof(Gravity));
     }
 
     // Update is called once per frame
     void Update()
     {
         for (int i = 0; i< NewGravObj.Length; i++){
             if (NewGravObj[i].GetComponent("Gravity")!=null)
             {
                 //Gives easy access to the other Gravity Script
                 Gravity GravForce = NewGravObj[i].GetComponent("Gravity");
                 f (GravForce.Grav * Mathf.Pow(1.0f - 0.00002f, Vector3.Distance(transform.position, NewGravObj[i].transform.position)) <= 0.2f)  {
 
                 }
             }
         }
     }
 }


I am running into problems with my only line in Start(), and when I make the GravForce variable. Does anyone know how to create a list of all GameObjects and call a script from a game object?

Comment
Add comment
10 |3000 characters needed characters left characters exceeded
▼
  • Viewable by all users
  • Viewable by moderators
  • Viewable by moderators and the original poster
  • Advanced visibility
Viewable by all users

2 Replies

· Add your reply
  • Sort: 
avatar image
0
Best Answer

Answer by ShadyProductions · Feb 19, 2020 at 09:11 AM

I don't really know what you're trying to attempt in your start method, You are trying to retrieve a Gravity script from the gameobject the gravity script is attached to.

So a reference to itself? Which is pointless, and then you are trying to put that reference into a GameObject[] type variable, which obviously it cannot because it is of type Gravity.

You will have to be a bit more specific with which objects you exactly want. You could do something like: https://docs.unity3d.com/ScriptReference/Object.FindObjectsOfType.html

 NewGravObj = FindObjectsOfType<GameObject>(); //Will return and store all gameobjects in the scene in the NewGravObj array.

Note that FindObjectsOfType is not a very performant method call, and it should not be overdone.

Comment
Add comment · Show 3 · Share
10 |3000 characters needed characters left characters exceeded
▼
  • Viewable by all users
  • Viewable by moderators
  • Viewable by moderators and the original poster
  • Advanced visibility
Viewable by all users
avatar image PaintedBirds · Feb 19, 2020 at 11:06 AM 0
Share

@ShadyProductions In the start method I am trying to get a list of all GameObjects in the scene, $$anonymous$$us the one checking at the time, then in the update method, I am trying to access the variables in the other Gravity scripts. I hope that makes more sense.

avatar image ShadyProductions PaintedBirds · Feb 19, 2020 at 12:01 PM 0
Share

Not to judge, but what you're trying to do seems a bit out of scope of your capabilities when it comes to C#. Why don't you just use unity's physics engine?

What you want is this:

 using System.Linq;
 using UnityEngine;
 
 public class Gravity : $$anonymous$$onoBehaviour
 {
     public float Grav;
     private int _uniqueInstanceId;
 
     void Start()
     {
         _uniqueInstanceId = GetInstanceID();
 
         if (GravityObjectDatabase.GravityObjects == null)
         {
             // Get all gravity objects
             GravityObjectDatabase.GravityObjects = FindObjectsOfType<Gravity>()
                 .Select(a => new GravityObject(a.gameObject, a))
                 .ToArray();
         }
     }
 
     // Update is called once per frame
     void Update()
     {
         // If one of the gameobjects is destroyed you must also remove them from the GravityObjects array (preferably before the object is destroyed (consider using List ins$$anonymous$$d of array))
         foreach (var gravObject in GravityObjectDatabase.GravityObjects)
         {
             // Skip the object if it is the same as the current class.
             if (gravObject.GameObject.GetInstanceID() == _uniqueInstanceId) continue;
 
             Gravity GravForce = gravObject.GravityScript;
             if (GravForce.Grav * $$anonymous$$athf.Pow(1.0f - 0.00002f, Vector3.Distance(transform.position, gravObject.GameObject.transform.position)) <= 0.2f)
             {
                 // Do your stuff
             }
         }
     }
 }
 
 public class GravityObject
 {
     public GameObject GameObject;
     public Gravity GravityScript;
 
     public GravityObject(GameObject obj, Gravity script)
     {
         GameObject = obj;
         GravityScript = script;
     }
 }
 
 public static class GravityObjectDatabase
 {
     public static GravityObject[] GravityObjects;
 }
avatar image PaintedBirds ShadyProductions · Feb 19, 2020 at 02:20 PM 0
Share

Thank you for this code, it is definitely beyond my skill level, but I think I understand it.

To answer your question: I am trying to get '3d' gravity where object fall towards others, even if it's y coordinate has a lower value than the object it is falling towards

avatar image
0

Answer by logicandchaos · Feb 19, 2020 at 12:42 PM

You declared NewGravObj as a list of GameObjects, you are trying to assign it as a Gravity component. What you need is FindObjectsOfType, this will return an array of all the objects of that type you want. This question has been answered on here a few times already, it came up when I typed your question into google. https://answers.unity.com/questions/527447/find-gameobjects-with-a-certain-script.html https://answers.unity.com/questions/46283/way-to-get-all-object-with-a-certain-componentscri.html Though I feel like you should study lists a little to get a better handle on them.

Comment
Add comment · Show 1 · Share
10 |3000 characters needed characters left characters exceeded
▼
  • Viewable by all users
  • Viewable by moderators
  • Viewable by moderators and the original poster
  • Advanced visibility
Viewable by all users
avatar image PaintedBirds · Feb 19, 2020 at 02:14 PM 0
Share

I have tried some of the methods I have found on google, so far none of them have worked, But I will look at this link

Your answer

Hint: You can notify a user about this post by typing @username

Up to 2 attachments (including images) can be used with a maximum of 524.3 kB each and 1.0 MB total.

Follow this Question

Answers Answers and Comments

712 People are following this question.

avatar image avatar image avatar image avatar image avatar image avatar image avatar image avatar image avatar image avatar image avatar image avatar image avatar image avatar image avatar image avatar image avatar image avatar image avatar image avatar image avatar image avatar image avatar image avatar image avatar image avatar image avatar image avatar image avatar image avatar image avatar image avatar image avatar image avatar image avatar image avatar image avatar image avatar image avatar image avatar image avatar image avatar image avatar image avatar image avatar image avatar image avatar image avatar image avatar image avatar image avatar image avatar image avatar image avatar image avatar image avatar image avatar image avatar image avatar image avatar image avatar image avatar image avatar image avatar image avatar image avatar image avatar image avatar image avatar image avatar image avatar image avatar image avatar image avatar image avatar image avatar image avatar image avatar image avatar image avatar image avatar image avatar image avatar image avatar image avatar image avatar image avatar image avatar image avatar image avatar image avatar image avatar image avatar image avatar image avatar image avatar image avatar image avatar image avatar image avatar image avatar image avatar image avatar image avatar image avatar image avatar image avatar image avatar image avatar image avatar image avatar image avatar image avatar image avatar image avatar image avatar image avatar image avatar image avatar image avatar image avatar image avatar image avatar image avatar image avatar image avatar image avatar image avatar image avatar image avatar image avatar image avatar image avatar image avatar image avatar image avatar image avatar image avatar image avatar image avatar image avatar image avatar image avatar image avatar image avatar image avatar image avatar image avatar image avatar image avatar image avatar image avatar image avatar image avatar image avatar image avatar image avatar image avatar image avatar image avatar image avatar image avatar image avatar image avatar image avatar image avatar image avatar image avatar image avatar image avatar image avatar image avatar image avatar image avatar image avatar image avatar image avatar image avatar image avatar image avatar image avatar image avatar image avatar image avatar image avatar image avatar image avatar image avatar image avatar image avatar image avatar image avatar image avatar image avatar image avatar image avatar image avatar image avatar image avatar image avatar image avatar image avatar image avatar image avatar image avatar image avatar image avatar image avatar image avatar image avatar image avatar image avatar image avatar image avatar image avatar image avatar image avatar image avatar image avatar image avatar image avatar image avatar image avatar image avatar image avatar image avatar image avatar image avatar image avatar image avatar image avatar image avatar image avatar image avatar image avatar image avatar image avatar image avatar image avatar image avatar image avatar image avatar image avatar image avatar image avatar image avatar image avatar image avatar image avatar image avatar image avatar image avatar image avatar image avatar image avatar image avatar image avatar image avatar image avatar image avatar image avatar image avatar image avatar image avatar image avatar image avatar image avatar image avatar image avatar image avatar image avatar image avatar image avatar image avatar image avatar image avatar image avatar image avatar image avatar image avatar image avatar image avatar image avatar image avatar image avatar image avatar image avatar image avatar image avatar image avatar image avatar image avatar image avatar image avatar image avatar image avatar image avatar image avatar image avatar image avatar image avatar image avatar image avatar image avatar image avatar image avatar image avatar image avatar image avatar image avatar image avatar image avatar image avatar image avatar image avatar image avatar image avatar image avatar image avatar image avatar image avatar image avatar image avatar image avatar image avatar image avatar image avatar image avatar image avatar image avatar image avatar image avatar image avatar image avatar image avatar image avatar image avatar image avatar image avatar image avatar image avatar image avatar image avatar image avatar image avatar image avatar image avatar image avatar image avatar image avatar image avatar image avatar image avatar image avatar image avatar image avatar image avatar image avatar image avatar image avatar image avatar image avatar image avatar image avatar image avatar image avatar image avatar image avatar image avatar image avatar image avatar image avatar image avatar image avatar image avatar image avatar image avatar image avatar image avatar image avatar image avatar image avatar image avatar image avatar image avatar image avatar image avatar image avatar image avatar image avatar image avatar image avatar image avatar image avatar image avatar image avatar image avatar image avatar image avatar image avatar image avatar image avatar image avatar image avatar image avatar image avatar image avatar image avatar image avatar image avatar image avatar image avatar image avatar image avatar image avatar image avatar image avatar image avatar image avatar image avatar image avatar image avatar image avatar image avatar image avatar image avatar image avatar image avatar image avatar image avatar image avatar image avatar image avatar image avatar image avatar image avatar image avatar image avatar image avatar image avatar image avatar image avatar image avatar image avatar image avatar image avatar image avatar image avatar image avatar image avatar image avatar image avatar image avatar image avatar image avatar image avatar image avatar image avatar image avatar image avatar image avatar image avatar image avatar image avatar image avatar image avatar image avatar image avatar image avatar image avatar image avatar image avatar image avatar image avatar image avatar image avatar image avatar image avatar image avatar image avatar image avatar image avatar image avatar image avatar image avatar image avatar image avatar image avatar image avatar image avatar image avatar image avatar image avatar image avatar image avatar image avatar image avatar image avatar image avatar image avatar image avatar image avatar image avatar image avatar image avatar image avatar image avatar image avatar image avatar image avatar image avatar image avatar image avatar image avatar image avatar image avatar image avatar image avatar image avatar image avatar image avatar image avatar image avatar image avatar image avatar image avatar image avatar image avatar image avatar image avatar image avatar image avatar image avatar image avatar image avatar image avatar image avatar image avatar image avatar image avatar image avatar image avatar image avatar image avatar image avatar image avatar image avatar image avatar image avatar image avatar image avatar image avatar image avatar image avatar image avatar image avatar image avatar image avatar image avatar image avatar image avatar image avatar image avatar image avatar image avatar image avatar image avatar image avatar image avatar image avatar image avatar image avatar image avatar image avatar image avatar image avatar image avatar image avatar image avatar image avatar image avatar image avatar image avatar image avatar image avatar image avatar image avatar image avatar image avatar image avatar image avatar image avatar image avatar image avatar image avatar image avatar image avatar image avatar image avatar image avatar image avatar image avatar image avatar image avatar image avatar image avatar image avatar image avatar image avatar image avatar image avatar image avatar image avatar image avatar image avatar image avatar image avatar image avatar image avatar image avatar image avatar image avatar image avatar image avatar image avatar image avatar image avatar image avatar image avatar image avatar image avatar image avatar image avatar image avatar image avatar image avatar image avatar image avatar image avatar image avatar image avatar image avatar image avatar image avatar image avatar image avatar image avatar image avatar image avatar image avatar image avatar image avatar image avatar image avatar image avatar image avatar image avatar image avatar image avatar image avatar image avatar image avatar image avatar image avatar image avatar image avatar image avatar image avatar image avatar image avatar image avatar image avatar image avatar image avatar image avatar image avatar image avatar image avatar image avatar image avatar image avatar image avatar image avatar image avatar image avatar image avatar image avatar image avatar image avatar image avatar image avatar image avatar image avatar image avatar image avatar image avatar image avatar image avatar image avatar image avatar image avatar image avatar image avatar image avatar image avatar image avatar image avatar image avatar image avatar image avatar image avatar image avatar image

Related Questions

Multiple Cars not working 1 Answer

Distribute terrain in zones 3 Answers

How do i change the position of my particle system 1 Answer

How can i make an object to rotate in a circle smooth around another object nonstop ? 2 Answers

C# Enemy dies on Collision 1 Answer


Enterprise
Social Q&A

Social
Subscribe on YouTube social-youtube Follow on LinkedIn social-linkedin Follow on Twitter social-twitter Follow on Facebook social-facebook Follow on Instagram social-instagram

Footer

  • Purchase
    • Products
    • Subscription
    • Asset Store
    • Unity Gear
    • Resellers
  • Education
    • Students
    • Educators
    • Certification
    • Learn
    • Center of Excellence
  • Download
    • Unity
    • Beta Program
  • Unity Labs
    • Labs
    • Publications
  • Resources
    • Learn platform
    • Community
    • Documentation
    • Unity QA
    • FAQ
    • Services Status
    • Connect
  • About Unity
    • About Us
    • Blog
    • Events
    • Careers
    • Contact
    • Press
    • Partners
    • Affiliates
    • Security
Copyright © 2020 Unity Technologies
  • Legal
  • Privacy Policy
  • Cookies
  • Do Not Sell My Personal Information
  • Cookies Settings
"Unity", Unity logos, and other Unity trademarks are trademarks or registered trademarks of Unity Technologies or its affiliates in the U.S. and elsewhere (more info here). Other names or brands are trademarks of their respective owners.
  • Anonymous
  • Sign in
  • Create
  • Ask a question
  • Spaces
  • Default
  • Help Room
  • META
  • Moderators
  • Explore
  • Topics
  • Questions
  • Users
  • Badges