OnTriggerEnter2D is not detecting gameObject tag-CodePudding

I'm writing a simple line of code that is when the player jump into the spike, it will trigger the death animation. I try OnTriggerEnter2D but it not working, maybe because of sorting layer? I also try to change the spike layer to be the same as the player layer but it still not working.

here the code:

using UnityEngine;
using System.Collections;

public class HeroKnight : MonoBehaviour {

[SerializeField] float      m_speed = 4.0f;
[SerializeField] float      m_jumpForce = 7.5f;
[SerializeField] float      m_rollForce = 6.0f;
[SerializeField] bool       m_noBlood = false;
[SerializeField] GameObject m_slideDust;

private Animator            m_animator;
private Rigidbody2D         m_body2d;
private Sensor_HeroKnight   m_groundSensor;
private Sensor_HeroKnight   m_wallSensorR1;
private Sensor_HeroKnight   m_wallSensorR2;
private Sensor_HeroKnight   m_wallSensorL1;
private Sensor_HeroKnight   m_wallSensorL2;
private bool                m_isWallSliding = false;
private bool                m_grounded = false;
private bool                m_rolling = false;
private int                 m_facingDirection = 1;
private int                 m_currentAttack = 0;
private float               m_timeSinceAttack = 0.0f;
private float               m_delayToIdle = 0.0f;
private float               m_rollDuration = 8.0f / 14.0f;
private float               m_rollCurrentTime;


// Use this for initialization
void Start ()
{
    m_animator = GetComponent<Animator>();
    m_body2d = GetComponent<Rigidbody2D>();
    m_groundSensor = transform.Find("GroundSensor").GetComponent<Sensor_HeroKnight>();
    m_wallSensorR1 = transform.Find("WallSensor_R1").GetComponent<Sensor_HeroKnight>();
    m_wallSensorR2 = transform.Find("WallSensor_R2").GetComponent<Sensor_HeroKnight>();
    m_wallSensorL1 = transform.Find("WallSensor_L1").GetComponent<Sensor_HeroKnight>();
    m_wallSensorL2 = transform.Find("WallSensor_L2").GetComponent<Sensor_HeroKnight>();
}

//Here the Trigger event
void OnTriggerEnter2D(Collider2D col)
{
    if (gameObject.tag == "Spike")
    {
       Debug.Log("OnTriggerSEnter2D");
        //Death
        m_animator.SetBool("noBlood", m_noBlood);
        m_animator.SetTrigger("Death");
    }
}

CodePudding user response：

You're not looking for the collider tag, your looking HeroKnight's gameobject instead.

CodePudding user response：

In fact, gameObject.tag checks the player tag itself. You must write the code as follows. Also consider that the CompareTag command is more efficient.

public void Update()
{
    void OnTriggerEnter2D(Collider2D col)
    {
        if (col.CompareTag("Spike"))
        {
            Debug.Log("OnTriggerSEnter2D");
            //Death
            m_animator.SetBool("noBlood", m_noBlood);
            m_animator.SetTrigger("Death");
        }
    }
}