Welcome to the Treehouse Community

Want to collaborate on code errors? Have bugs you need feedback on? Looking for an extra set of eyes on your latest project? Get support with fellow developers, designers, and programmers of all backgrounds and skill levels here with the Treehouse Community! While you're at it, check out some resources Treehouse students have shared here.

Looking to learn something new?

Treehouse offers a seven day free trial for new students. Get access to thousands of hours of content and join thousands of Treehouse students and alumni in the community today.

Start your free trial

Game Development How to Make a Video Game Score, Enemies, and Game State Create Enemy Navigation and AI

Adam Beck
Adam Beck
9,345 Points
Posted by Adam Beck
Adam Beck
9,345 Points

My Bird Will Not Move

So I triple checked the code and still can not make the bird move! Am I missing something?

using UnityEngine; using System.Collections;

public class BirdMovement : MonoBehaviour {

[SerializeField]
private Transform target;
private NavMeshAgent birdAgent;
private Animator birdAnimator;


// Use this for initialization
void Start () {
    birdAgent = GetComponent<NavMeshAgent> ();
    birdAnimator = GetComponent<Animator> ();
}

// Update is called once per frame
void Update () {
    // Set the birds destination
    birdAgent.SetDestination (target.position);

    // Measure the magnitude of the NavMeshAgents velocity
    float speed = birdAgent.velocity.magnitude;

    // Pass the velocity to the animator component
    birdAnimator.SetFloat ("Speed", speed);

}

}

Nicholas Wood
Nicholas Wood
268 Points
Nicholas Wood
Nicholas Wood
268 Points

Hey,

Did you drag the Player prefab from the Hierarchy window in to the Target field in the inspector for your script?

Alexander Davison
Alexander Davison
65,469 Points

Did you drag the Player GameObject into the target field? Also, try replacing the "speed" variable (on the birdAnimator.SetFloat ("Speed", speed); line) with the speed.

1 Answer

Tung Nguyen
Tung Nguyen
1,519 Points
Tung Nguyen
Tung Nguyen
1,519 Points

You must drag & drop the Player GameObject in Hierarchy panel on the left side into the Target field of "Bird Movement Script component" in the Inspector panel of Bird GameObject :D

I mistakenly drag Player GameObject in Prefabs folder of Assets panel, and the game looks working correctly but after reaching the first frog's position, the bird doesn't chase the frog anymore =.=