Collision detection with a Box Collider that has its isTrigger on Problem

Question

I have a box collider that should act like a view of the AI and i have a player that has a capsule collider and the game objects name is "Player". When i use the build it void that is OnCollisionEnter and exit (btw this didn't work even if i used the trigger versions of the voids) it just doesn't detect it. I tried checking if the player as a game Object collides with the vision collider with the "Equals()" command and that didn't work to. I have attached pictures and my whole AI script if someone knows how to fix this.

and the script

    using System;
    using UnityEngine;
    using UnityEngine.AI;

    namespace Demo.Scripts.Runtime
    {
        public class AI : MonoBehaviour
        {
            [Tab("Main")]
            [Header("Zombie States")]
            [SerializeField] public bool is_Chasing_Player;
            [SerializeField, Range(0f, 10f)] public float speed = 5f;

            [Tab("Navigation")]
            [Header("NavMesh Stuff")]
            [SerializeField] public NavMeshAgent agent;
            [SerializeField] public Collider vision_Collider;

            [Header("Player Location")]
            [SerializeField] public Transform player;

            [Tab("Animation")]
            [Header("Head Animator")]
            [SerializeField] public Animator animator;

            [Header("Animator Controllers")]
            [SerializeField] public RuntimeAnimatorController idle;
            [SerializeField] public RuntimeAnimatorController walk;
            [SerializeField] public RuntimeAnimatorController die;

            private int count = 0;

            private void Start()
            {
                animator.runtimeAnimatorController = idle;
                agent = GetComponent<NavMeshAgent>();
                animator = GetComponent<Animator>();
            }

            private void Update()
            {
                ZombieDie();
                if (player != null && is_Chasing_Player)
                {
                    if (count == 0)
                    {
                        animator.runtimeAnimatorController = walk;
                        count++;
                    }
                    agent.SetDestination(player.position);
                    agent.speed = speed;
                }
                if (!is_Chasing_Player && animator.runtimeAnimatorController != idle)
                {
                    animator.runtimeAnimatorController = idle;
                }
            }

            public void ZombieDie()
            {
                if (Input.GetKeyDown(KeyCode.I))
                {
                    animator.runtimeAnimatorController = die;
                    agent.speed = 0;
                    speed = 0;
                }
            }

            private void OnCollisionEnter(Collision collision)
            {
                if (collision.collider.CompareTag("Player"))
                {
                    Debug.Log("Player entered vision collider");
                }
            }

        private void OnCollisionExit(Collision collision)
            {
                if (collision.collider.CompareTag("Player"))
                {
                    Debug.Log("Player exited vision collider");
                }
            }
        }
    }
        

I was trying to write a sentence in the console when the player collides with the vision collider.

Answer 1

use OnTriggerEnter instead of OnCollision when "isTrigger" is checked.

documentation says:

One must have Collider.isTrigger enabled, and contain a Rigidbody

So add a Rigidbody to your agent and mark it "isKinematic".

When neither of them has a Rigidbody, the Physics Engine doesn't expect them to move and therefore collide. If you move the objects by script (navmesh agent) a kinematic rigidbody is what you want.