CODEWITHSUNDEEP
c#unity-game-engine
PokeRwOw
PokeRwOw

Reputation: 599

Enemy gameObject didn't move

I'm confronted with a problem with the implementation of enemies. Firstly, I'm following this tutorial. I have a gameobject for enemy with box collider and basically all I need.

Here is my script :

using UnityEngine;
using System.Collections;

public class Enemy : MonoBehaviour {

[SerializeField]
private float rotationSpeed = 180; // In degrees per second

[SerializeField]
private float movementSpeed = 1f; // In units per second

[SerializeField]
private float meshRadius = 1f; // In units

private IEnumerator turnTowardsPlayerCoroutine;
private IEnumerator moveTowardsPlayerCoroutine;

void OnTriggerEnter(Collider collider)
{
    if (collider.gameObject.tag == "Player")
    {
        float playerDistance = Vector3.Distance(collider.transform.position, transform.position);

        // Ignore trigger events from the inner colliders
        if (playerDistance >= 2f * meshRadius)
        {
            turnTowardsPlayerCoroutine = TurnTowardsPlayer(collider.transform);
            moveTowardsPlayerCoroutine = MoveTowardsPlayer(collider.transform);
            StartCoroutine(turnTowardsPlayerCoroutine);
            StartCoroutine(moveTowardsPlayerCoroutine);
        }
    }
}

void OnTriggerExit(Collider collider)
{
    if (collider.tag == "Player")
    {
        float playerDistance = Vector3.Distance(collider.transform.position, transform.position);

        // Ignore trigger events from the inner colliders
        if (playerDistance >= 2f * meshRadius)
        {
            StopCoroutine(turnTowardsPlayerCoroutine);
            StopCoroutine(moveTowardsPlayerCoroutine);
        }
    }
}

private IEnumerator TurnTowardsPlayer(Transform player)
{
    while (true)
    {
        Quaternion targetRotation = Quaternion.LookRotation(player.position - transform.position, Vector3.up);
        targetRotation.x = 0f;
        targetRotation.z = 0f;

        transform.rotation = Quaternion.RotateTowards(transform.rotation, targetRotation, rotationSpeed * Time.deltaTime);
        yield return 0;
    }
}

private IEnumerator MoveTowardsPlayer(Transform player)
{
    while (true)
    {
        Vector3 playerDirection = transform.position - player.position;
        playerDirection.y = 0;
        playerDirection = playerDirection.normalized;

        Vector3 deltaMovement = playerDirection * movementSpeed * Time.deltaTime;

        int layermask = LayerMask.GetMask("Environment");
        Vector3 movingTowards = transform.position - playerDirection*meshRadius + (new Vector3(0f, 0.1f, 0f));
        if (Physics.Raycast(movingTowards, Vector3.down, 0.25f, layermask))
        {
            transform.position -= deltaMovement;
        }

        yield return 0;
    }
}
}

The result is, when I enter in the zone where enemy must attack me, the enemy rotated towards me, but he didn't move. Did I forget something or did something go wrong?

Upvotes: 1

Views: 184

Answers (2)

user3071284
user3071284

Reputation: 7100

I have been through that tutorial a couple times, and the script is correct as it is. What appears to be missing is the layer. Be sure the "Environment" layer exists and is assigned it to the environment objects.

The easiest way to add the "Environment" layer to the necessary objects would be to select each of the objects in the hierarchy that should be in the "Environment" layer and then changing the layer in the inspector.

Upvotes: 1

Neven Ignjic
Neven Ignjic

Reputation: 679

Well if Physics raycast is unsuccessful that can mean just one of the following things:

-layermask settings are wrong (it ignores specifically layered objects and it doesn't hit anything)

-You are sending it in wrong direction

-Shooting distance is too small, the thing is that in the tutorial you are watching it might work with that value, but you probably have differently scaled your level. Try putting it to something much larger (100, 1000).

Upvotes: 0

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