[Solved] How to touch/activate 2D objects?

Question

So i've been trying for a few days to get my code to work by using Physics2D.Raycast to be able to using raycasting for using a touchscreen to activate or touch 2D objects, but with no luck. I was wondering if someone could give me a simple start since I'm still unable to do this without countless errors. Any help is appreciated, Thank you!

This is an example of my code Ive been using so far: using System.Collections; using System.Collections.Generic; using UnityEngine; using System; public class Interactables: MonoBehaviour { Ray ray; RaycastHit hit; private float distp; public float maxdist; private bool ispaused; bool open = false; public static String trigname; public static bool radiohit = false; private Vector3 v1; private int hitnum = 0; // Use this for initialization void Start() { maxdist = 5f; } // Update is called once per frame void Update() { ray = Camera.main.ScreenPointToRay(Input.mousePosition); Clickers(); ispaused = CharacterSettings.paused; if (open == true) { //close after far away enough } } private void Clickers() { if (Input.GetMouseButtonDown(0)) { RaycastHit2D hit = Physics2D.Raycast(ray.origin, ray.direction); if (hit.collider != null) //Changed { //Debug.Log(hit.transform.tag); if (ispaused == false) { distp = Vector3.Distance(transform.position, hit.transform.position); //Here goes the selectable items } if (distp <= maxdist) { Battery(); } } } } private void Battery() { if (hit.collider.GetComponent<Collider2D>().tag == "Battery") { Flashlight.battery++; Destroy(hit.transform.gameObject); } } }

Answer 1

Best Answer

Answer by Vega4Life · Dec 22, 2018 at 11:37 PM

Here is an example to determine if something can be picked up. You were already on the right track with the raycast. Hope it makes sense.

     public class RayCast : MonoBehaviour
     {
         void Update()
         {
             if (Input.GetMouseButtonDown(0))
             {
                 Ray rayLocation = Camera.main.ScreenPointToRay(Input.mousePosition);
                 RaycastHit2D hit = Physics2D.Raycast(rayLocation.origin, rayLocation.direction);
                 if (hit.collider != null)
                 {
                     // We have multiple options to determine - Tags, Layers, Markups (I like markups because they can hold data)
 
                     // Check if what we hit is a collectible
                     Collectible item = hit.transform.GetComponent<Collectible>();
 
                     // OR check if they have an interface of collectible  (Do this or above, not both :))
                     ICollectible item2 = hit.transform.GetComponent<ICollectible>();
                 }
             }
         }
     }
 
 
     // OUR MARKUPS
     public abstract class Collectible : MonoBehaviour
     {
         // Base class from where all our collectibles derive
         // Then we can just see if the collectible script is on it
     }
 
     public interface ICollectible
     {
         // We can add an interface that is completely empty to our scripts if they can be collected
         // Can be empty, or make a script do something special
     }

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Vega4Life · Dec 22, 2018 at 11:41 PM 0

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3kWikiGames · Dec 23, 2018 at 12:03 AM 0

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Vega4Life 3kWikiGames · Dec 23, 2018 at 12:12 AM 0

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[Solved] How to touch/activate 2D objects?

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