Question by nethsajo1998 · Feb 10, 2019 at 11:43 AM · c#ui collider pickup

Show panel when collide on prefabs

Hey guys. I am making a RPG game. I have prefab wherein the player can pick-up that object. My question is, why does my panel is not showing when my character collides to a prefab (pickupable object). My prefab's collider (box collider) isTrigger was checked and also the panel is a prefab. The script below is attached to my prefab (pickupable object). These are the codes that I used:

 using System.Collections;
 using System.Collections.Generic;
 using UnityEngine;
 using UnityEngine.UI;
 
 public class DestroyFlower : MonoBehaviour {
 
     private bool isPickedUp = false;
 
     private float destroyTime = 1f;
 
     public GameObject messagePanel;
 
     void Update() {
         if(isPickedUp && Input.GetKeyDown(KeyCode.LeftControl)) {
             QuestManager.questManager.AddQuestItem ("Find 10 flowers", 1);
             Destroy (gameObject, destroyTime);
         }
     }
 
     void OnTriggerEnter (Collider other) {
         messagePanel.SetActive (true);
         if(other.tag == "Player") {
             isPickedUp = true;
             messagePanel.GetComponentInChildren<Text>().text = "Press Left-Control to pick up";
         }
     }
 
     void OnTriggerStay (Collider other) {
         if(other.tag == "Player") {
             isPickedUp = true;
         }
     }
         
     void OnTriggerExit (Collider other) {
         if(other.tag == "Player") {
             isPickedUp = false;
             messagePanel.SetActive (false);
         }
     }
 }

Add comment · Show 12

DCordoba · Feb 10, 2019 at 12:09 PM 0

please remember that to active OnTriggerEnter you need to either of the two must to have a rigidody with use gavity and is kinematic disabled also the panel is a prefab but is on scene (inside canvas)? or is just on assets folder...? maybe is some like that, because don't seem to be a scripting error

Pd: a error is, if you press left control like a maniac close the flower before pass this second that take to destroy it, you can collect 10 at once xd

nethsajo1998 · Feb 10, 2019 at 12:12 PM 0

$$anonymous$$y character has a rigidbody and my panel prefab is on the resources folder. What should I do?

DCordoba nethsajo1998 · Feb 10, 2019 at 01:06 PM 0

you character probably have a "use gravity" property on the rigidbody enabled, this cause that OnTriggerEnter cant be called

because is hard on most of the games have a character that ignore the gravity, add a rigidbody to the flowers and uncheck the use gravity that is enabled by default alt text

also add the panel on scene, as child of canvas (you probably already have a canvas on scene) and disable it, you know uncheck the upper toggle on inspector, and also drag & drop the panel on scene (from hierachy to inspector) to the public variable messagePanel like you did with the prefab (from assets to inspector). alt text