koobas.hobune.stream
The problem got solved otherwise and I don't want the question to be visible anymore
Enemy stops patrolling when player comes close
Hey guys! I am pretty new to Unity and C# so I wanted to ask how it is possible to make my enemy stop moving when the player comes close. My enemy moves this way:
if (moveRight)
{
transform.Translate(2 * Time.deltaTime * speed, 0, 0);
transform.localScale = new Vector2(1, 1);
}
else
{
transform.Translate(-2 * Time.deltaTime * speed, 0, 0);
transform.localScale = new Vector2(-1, 1);
}
if (trig.gameObject.CompareTag("stopper"))
{
if (moveRight)
{
moveRight = false;
}
else
{
moveRight = true;
The trigger is there because I created two GameObjects my enemy collides to so that he turns. now I want to make him stop when the player comes close. I found a solution like this:
Vector2.Distance(transform.position, player.position
but it didn't to the job.
I hope you can help me out :)
Kind regards
@XBigGuyX Vector2.Distance gives distance between two point so you need to do something like this:
if(Vector2.Distance(transform.position, player.position) < 1){
//Stop Moving
}
And how would I make him stop moving in this case? I don't know how the "Stop Moving" code would look like :D
You could set your speed variable to 0, then in an else set it back to whatever you currently have it set to.
The correct method is to set up waypoints. So the enemy is not limited to the X axis. For a simple patrol, 2 points are enough.
A waypoint is an empty object on the map. One of the methods (there are others, but I take the simplest) is to place the WPs by hand in the Inspector, so the script knows where they are.
The code is incomplete: it does not deal with the attack. The enemy simply goes to the player's position.
using UnityEngine;
public class Enemy : MonoBehaviour
{
[SerializeField] private Transform[] waypoints;
[SerializeField] private float speed = 5f;
[SerializeField] private Transform player = null;
private enum State { Patrol, Attack };
private State state;
private int currentWayPointIndex = 0;
private void Start ()
{
state = State.Patrol;
}
private void Update ()
{
switch (state)
{
case State.Patrol:
OnPatrol ();
break;
case State.Attack:
Attack ();
break;
default:
break;
}
}
private bool IsPlayerClose ()
{
// Compute distance has a heavy cost : a square root is computed (at each frame!). So I use squarred distance :
// I don't need the exact distance, just whether or not it's smaller than a certain value.
float squarredDistance = (player.position - transform.position).sqrMagnitude;
// As the value I chose 3 meters, so I compare against 3 ^ 2. It is to be adjusted according to the scale
// of your game and the type of enemy (melee, ranged, ...)
return (squarredDistance <= 9f);
}
private void OnPatrol ()
{
// Move to the next Waypoint.
transform.position = Vector3.MoveTowards (transform.position, waypoints[currentWayPointIndex].position, speed * Time.deltaTime);
// Is the player close?
if (IsPlayerClose ())
{
// Attack!!!
state = State.Attack;
}
// Arrived?
float squarredDistance = (waypoints[currentWayPointIndex].position - transform.position).sqrMagnitude;
if (squarredDistance <= 1f)
{
NextWaypoint ();
}
}
private void Attack ()
{
// Move to the player.
transform.position = Vector3.MoveTowards (transform.position, player.position, speed * Time.deltaTime);
// Like above, check the distance and make the job.
// Your code.
}
private void NextWaypoint ()
{
currentWayPointIndex++;
if (currentWayPointIndex >= waypoints.Length)
{
currentWayPointIndex = 0;
}
}
}
Aren't my empty gameobjects already waypoints? They are close to the enemy and the enemy moves between them. Would I create again an empty gameobject and put them into the inspector?
