OnTriggerEnter not working

Question

This code on unity doesn't recognice the triggers in the functions using System.Collections; using UnityEngine.UI; using UnityEngine.SceneManagement; using System.Collections.Generic; using UnityEngine;

 public class SnakeMovement : MonoBehaviour {
     public List<Transform> BodyParts = new List<Transform>();
     public float mindistance = 0.25f, limx, limy, limz;
     public float speed =1;
     public float rotationspeed = 50;
     public int beginsize;
     public float TimeFromLastRetry;
     public GameObject boddypfrefab;
 
     public GameObject DeadScreen;
 
     private float dis, x, y, z;
     private Transform curBodyPart;
     private Transform prevBodypart;
 
     private Vector3 pos;
     
     
     public Text winText;
     public Text timerText;
 
     private Rigidbody rb;
     private int count;
     public Text countText;
     public GameObject particulas;
 
     private float StartTime;
 
     // Use this for initialization
     void Start () {
         count = 0;
         SetCountText();
         rb = GetComponent<Rigidbody>();
         StartTime = Time.time;
         StartLevel();
     }
 
     public void StartLevel()
     {
         //TimeFromLastRetry = Time.time;
         DeadScreen.SetActive(true);
         for (int i = 0; i < beginsize - 1; i++)
         {
             AddBodyPart();
         }
     }
     
     // Update is called once per frame
     void FixedUpdate () {
         Move();
         if (Input.GetKey(KeyCode.Q))
         {
             AddBodyPart();
         }
         float t = Time.time - StartTime;
         string minutes = ((int)t / 60).ToString();
         string seconds = (t % 60).ToString("f2");
         timerText.text = minutes + ":" + seconds;   
         //BodyParts[0].position = new Vector3(2, 0.5f, 0);
     }
 
     public void Move()
     {
         float curspeed = speed;
 
         float moveHorizontal = Input.GetAxis("Horizontal");
         float moveVertical = Input.GetAxis("Vertical");
 
         Vector3 movement = new Vector3(moveHorizontal, 0.0f, moveVertical);
         BodyParts[0].forward += movement;
         if (Input.GetAxis("Vertical") != 0 )
         {
             curspeed *= 2;
             
         }
         BodyParts[0].Translate(BodyParts[0].forward * curspeed * Time.smoothDeltaTime, Space.World);
         //BodyParts[0].Translate(movement*curspeed);
         //BodyParts[0].Translate(BodyParts[0].forward*curspeed*Time.smoothDeltaTime, Space.World);
 
         if (Input.GetAxis("Horizontal") != 0)
             BodyParts[0].Rotate(Vector3.up * rotationspeed * Time.deltaTime * Input.GetAxis("Horizontal"));
 
         for (int i=1; i<BodyParts.Count; i++)
         {
             curBodyPart = BodyParts[i];
             prevBodypart = BodyParts[i - 1];
 
             dis = Vector3.Distance(prevBodypart.position, curBodyPart.position);
 
             Vector3 newpos = prevBodypart.position;
 
             newpos.y = BodyParts[0].position.y;
 
             float T = Time.deltaTime * dis / mindistance * curspeed;
 
             if(T>0.5f)
             {
                 T = 0.5f;
             }
             curBodyPart.position = Vector3.Slerp(curBodyPart.position, newpos, T);
             curBodyPart.rotation = Quaternion.Slerp(curBodyPart.rotation, prevBodypart.rotation, T);
         }
     }
 
     public void AddBodyPart()
     {
         Transform newpart = (Instantiate(boddypfrefab, BodyParts[BodyParts.Count-1].position, BodyParts[BodyParts.Count - 1].rotation) as GameObject).transform;
         newpart.SetParent(transform);
 
         BodyParts.Add(newpart);
     }
 
     void OnTriggerEnter (Collider other)
     {
         if (other.gameObject.CompareTag("Objetivo"))
         {
             Instantiate(particulas, other.gameObject.transform.position, Quaternion.identity);//creacion efecto de choqu
             other.gameObject.transform.position = new Vector3(-999, -999, -999);
             x = Random.Range(-limx, limx);
             y = limy;
             z = Random.Range(-limz, limz);
             pos = new Vector3(x, y, z);
             other.gameObject.transform.position = pos;//traslado a nueva locación
             count++;
             SetCountText();
             print("trigger objetivo");
             AddBodyPart();
         }
         if(other.gameObject.CompareTag("Pared"))
         {
             print("trigger con pared");
             Instantiate(particulas, other.gameObject.transform.position, Quaternion.identity);//creacion efecto de choque
             Scene scene = SceneManager.GetActiveScene();
             SceneManager.LoadScene(SceneManager.GetActiveScene().name);
         }
     }
     void SetCountText()
     {
         countText.text = "Count: " + count.ToString();
         /*if (count >= 12)
         {
             Scene scene = SceneManager.GetActiveScene();
             winText.text = "You Win!!! :)";
             if (scene.name == "minigame")
             {
                 SceneManager.LoadScene(1);
             }
             else if (scene.name == "minigame2")
             {
                 SceneManager.LoadScene(2);
             }
             else if (scene.name == "minigame3")
             {
                 SceneManager.LoadScene(3);
             }
             else if (scene.name == "minigame4")
             {
                 Application.Quit();
             }
         }*/
     }
 }

,I'm making a snake game but the OnTriggerEnter function does not recibe anything or it is not working this is the code

 using System.Collections;
 using UnityEngine.UI;
 using UnityEngine.SceneManagement;
 using System.Collections.Generic;
 using UnityEngine;
 
 public class SnakeMovement : MonoBehaviour {
     public List<Transform> BodyParts = new List<Transform>();
     public float mindistance = 0.25f, limx, limy, limz;
     public float speed =1;
     public float rotationspeed = 50;
     public int beginsize;
     public float TimeFromLastRetry;
     public GameObject boddypfrefab;
 
     public GameObject DeadScreen;
 
     private float dis, x, y, z;
     private Transform curBodyPart;
     private Transform prevBodypart;
 
     private Vector3 pos;
     
     
     public Text winText;
     public Text timerText;
 
     private Rigidbody rb;
     private int count;
     public Text countText;
     public GameObject particulas;
 
     private float StartTime;
 
     // Use this for initialization
     void Start () {
         count = 0;
         SetCountText();
         rb = GetComponent<Rigidbody>();
         StartTime = Time.time;
         StartLevel();
     }
 
     public void StartLevel()
     {
         //TimeFromLastRetry = Time.time;
         DeadScreen.SetActive(true);
         for (int i = 0; i < beginsize - 1; i++)
         {
             AddBodyPart();
         }
     }
     
     // Update is called once per frame
     void FixedUpdate () {
         Move();
         if (Input.GetKey(KeyCode.Q))
         {
             AddBodyPart();
         }
         float t = Time.time - StartTime;
         string minutes = ((int)t / 60).ToString();
         string seconds = (t % 60).ToString("f2");
         timerText.text = minutes + ":" + seconds;   
         //BodyParts[0].position = new Vector3(2, 0.5f, 0);
     }
 
     public void Move()
     {
         float curspeed = speed;
 
         float moveHorizontal = Input.GetAxis("Horizontal");
         float moveVertical = Input.GetAxis("Vertical");
 
         Vector3 movement = new Vector3(moveHorizontal, 0.0f, moveVertical);
         BodyParts[0].forward += movement;
         if (Input.GetAxis("Vertical") != 0 )
         {
             curspeed *= 2;
             
         }
         BodyParts[0].Translate(BodyParts[0].forward * curspeed * Time.smoothDeltaTime, Space.World);
         //BodyParts[0].Translate(movement*curspeed);
         //BodyParts[0].Translate(BodyParts[0].forward*curspeed*Time.smoothDeltaTime, Space.World);
 
         if (Input.GetAxis("Horizontal") != 0)
             BodyParts[0].Rotate(Vector3.up * rotationspeed * Time.deltaTime * Input.GetAxis("Horizontal"));
 
         for (int i=1; i<BodyParts.Count; i++)
         {
             curBodyPart = BodyParts[i];
             prevBodypart = BodyParts[i - 1];
 
             dis = Vector3.Distance(prevBodypart.position, curBodyPart.position);
 
             Vector3 newpos = prevBodypart.position;
 
             newpos.y = BodyParts[0].position.y;
 
             float T = Time.deltaTime * dis / mindistance * curspeed;
 
             if(T>0.5f)
             {
                 T = 0.5f;
             }
             curBodyPart.position = Vector3.Slerp(curBodyPart.position, newpos, T);
             curBodyPart.rotation = Quaternion.Slerp(curBodyPart.rotation, prevBodypart.rotation, T);
         }
     }
 
     public void AddBodyPart()
     {
         Transform newpart = (Instantiate(boddypfrefab, BodyParts[BodyParts.Count-1].position, BodyParts[BodyParts.Count - 1].rotation) as GameObject).transform;
         newpart.SetParent(transform);
 
         BodyParts.Add(newpart);
     }
 
     void OnTriggerEnter (Collider other)
     {
         if (other.gameObject.CompareTag("Objetivo"))
         {
             Instantiate(particulas, other.gameObject.transform.position, Quaternion.identity);//creacion efecto de choqu
             other.gameObject.transform.position = new Vector3(-999, -999, -999);
             x = Random.Range(-limx, limx);
             y = limy;
             z = Random.Range(-limz, limz);
             pos = new Vector3(x, y, z);
             other.gameObject.transform.position = pos;//traslado a nueva locación
             count++;
             SetCountText();
             print("trigger objetivo");
             AddBodyPart();
         }
         if(other.gameObject.CompareTag("Pared"))
         {
             print("trigger con pared");
             Instantiate(particulas, other.gameObject.transform.position, Quaternion.identity);//creacion efecto de choque
             Scene scene = SceneManager.GetActiveScene();
             SceneManager.LoadScene(SceneManager.GetActiveScene().name);
         }
     }
     void SetCountText()
     {
         countText.text = "Count: " + count.ToString();
         /*if (count >= 12)
         {
             Scene scene = SceneManager.GetActiveScene();
             winText.text = "You Win!!! :)";
             if (scene.name == "minigame")
             {
                 SceneManager.LoadScene(1);
             }
             else if (scene.name == "minigame2")
             {
                 SceneManager.LoadScene(2);
             }
             else if (scene.name == "minigame3")
             {
                 SceneManager.LoadScene(3);
             }
             else if (scene.name == "minigame4")
             {
                 Application.Quit();
             }
         }*/
     }
 }

[1]: /storage/temp/112118-pared.png

Answer 1

Answer by Cuttlas-U · Mar 01, 2018 at 09:11 AM

hey; i dont see any problems in your script or the objects;

can u show me a screen shot from your snake object too ;

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Answer 2

Answer by HernandoNJ · Oct 07, 2021 at 02:09 AM

Both gameobjects must have a collider, one of them must be trigger and also any of them must have attached a Rigidbody. Also keep in mind if it is OnTriggerEnter or OnTriggerEnter2D

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OnTriggerEnter not working

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