Please, help with collisions

Questions & Answers
,
1

This script has a problem:
It should change chaseMode to true when playerToChase is colliding with visionCollider, but that doesn’t happen.

I tried different solutions but nothing works. The objects have the collider components properly set up.

the script:

using System.Collections;
using UnityEngine;
using UnityEngine.AI;

public class AntagonistAI : MonoBehaviour
{
	[Header("Configuration")]
	public GameObject antagonist;
	public GameObject visionCollider;
	public GameObject playerToChase;
	public float updateSpeed = 1f;
	public bool chaseMode = false;
	
	[Header("Walking")]
	public float walkSpeed = 10f;
	public Transform[] pathPoints;
	private int currentPathIndex = 0;
	
	[Header("Chasing")]
	public float chaseSpeed = 15f;
	public float giveupDistance = 30f;
	
	private NavMeshAgent navMeshAgent;
	
	private void Start()
	{
		navMeshAgent = antagonist.GetComponent<NavMeshAgent>();
		StartCoroutine(UpdateAI());
	}
    
    void Update() {
// wtf lol this is cursed
                if (playerToChase != null && visionCollider != null && playerToChase.GetComponent<Collider>().bounds.Intersects(visionCollider.GetComponent<Collider>().bounds))
        {
            // this doesn't work
            chaseMode = true;
            Debug.log("omg collision works")
        }
    }
	
	private IEnumerator UpdateAI()
	{
		while (true)
		{
			if (!chaseMode)
			{
				Patrol();
			}
			else
			{
				Chase();
			}
			
			yield return new WaitForSeconds(updateSpeed);
		}
	}
	
	private void Patrol()
	{
		if (pathPoints.Length == 0)
		{
			Debug.LogError("patrol points not set.");
			return;
		}
		
		navMeshAgent.speed = walkSpeed;
		
		if (navMeshAgent.remainingDistance < 0.5f)
		{
			currentPathIndex = (currentPathIndex + 1) % pathPoints.Length;
			navMeshAgent.SetDestination(pathPoints[currentPathIndex].position);
			Debug.Log("moving to point.");
		}
	}
	
	private void Chase()
	{
		if (playerToChase == null)
		{
			Debug.LogError("player object is bad");
			chaseMode = false;
			return;
		}
		
		navMeshAgent.speed = chaseSpeed;
		navMeshAgent.SetDestination(playerToChase.transform.position);
		
		float distanceToPlayer = Vector3.Distance(antagonist.transform.position, playerToChase.transform.position);
		if (distanceToPlayer > giveupDistance)
		{
			chaseMode = false;
			Debug.Log("Chasing stopped.");
		}
	}
	

}
2

Delete that whole Update() method, it’s a mess. Use OnTriggerEnter() instead:
Unity - Scripting API: Collider.OnTriggerEnter(Collider) (unity3d.com)

Note: Both GameObjects must contain a Collider component. One must have Collider.isTrigger enabled, and contain a Rigidbody. If both GameObjects have Collider.isTrigger enabled, no collision happens. The same applies when both GameObjects do not have a Rigidbody component.