Wayback Machinekoobas.hobune.stream
May JUN Jul
Previous capture 13 Next capture
2021 2022 2023
1 capture
13 Jun 22 - 13 Jun 22
sparklines
Close Help
  • Products
  • Solutions
  • Made with Unity
  • Learning
  • Support & Services
  • Community
  • Asset Store
  • Get Unity

UNITY ACCOUNT

You need a Unity Account to shop in the Online and Asset Stores, participate in the Unity Community and manage your license portfolio. Login Create account
  • Blog
  • Forums
  • Answers
  • Evangelists
  • User Groups
  • Beta Program
  • Advisory Panel

Navigation

  • Home
  • Products
  • Solutions
  • Made with Unity
  • Learning
  • Support & Services
  • Community
    • Blog
    • Forums
    • Answers
    • Evangelists
    • User Groups
    • Beta Program
    • Advisory Panel

Unity account

You need a Unity Account to shop in the Online and Asset Stores, participate in the Unity Community and manage your license portfolio. Login Create account

Language

  • Chinese
  • Spanish
  • Japanese
  • Korean
  • Portuguese
  • Ask a question
  • Spaces
    • Default
    • Help Room
    • META
    • Moderators
    • Topics
    • Questions
    • Users
    • Badges
  • Home /
avatar image
0
Question by RedRightHand- · Oct 27, 2021 at 04:44 PM · 2d-platformerpathfinding2d-physicsastar

Help getting grounded enemy to move with A* pathfinding (based on Brackeys tutorial)

Hello!

So, I have an enemy object. I stumbled with the Brackeys tutorial for enemy pathfinding using A* project (link: https://www.youtube.com/watch?v=jvtFUfJ6CP8&ab_channel=Brackeys), but somehow, I can't get my enemy object to move - I'm using the custom script -. Also, I'm using a little variation in the "AddForce" part of the script that I found in the comments of the video, It is supposed to help to move the enemy just in the horizontal axis, but the original AddForce

Rigidbody2D.AddForce(Force);

doesn't work either. So, here is the script:

 using System.Collections;
 using System.Collections.Generic;
 using UnityEngine;
 using Pathfinding;
 
 public class YaoquizquitlCeMovement : MonoBehaviour
 {
     [Header("Pathfinding")]
     public Transform Target;
 
     [Header("Physics")]
     public float Speed = 2f;
     public float NextWaypointDistance = 3f;
 
     Path Path;
     int CurrentWaypoint = 0;
 
     Seeker Seeker;
     Rigidbody2D Rigidbody2D;
 
     void Start()
     {
         Seeker = GetComponent<Seeker>();
         Rigidbody2D = GetComponent<Rigidbody2D>();
 
         InvokeRepeating("UpdatePath", 0f, 0.5f);
     }
 
     void FixedUpdate()
     {
         if(Path == null)
         {
             return;
         }
 
         if(CurrentWaypoint >= Path.vectorPath.Count)
         {
             return;
         } 
 
         Vector2 Direction = ((Vector2)Path.vectorPath[CurrentWaypoint] - Rigidbody2D.position).normalized;
         Vector2 Force = Direction * Speed * Time.deltaTime;

         //This is the variation for the ground enemies movement.
         Vector2 Velocity = Rigidbody2D.velocity;
         Velocity = Force;
         Rigidbody2D.velocity = Velocity;
 
         float Distance = Vector2.Distance(Rigidbody2D.position, Path.vectorPath[CurrentWaypoint]);
 
         if(Distance < NextWaypointDistance)
         {
             CurrentWaypoint++;
         }
     }
 
     void UpdatePath()
     {
         if(Seeker.IsDone())
         {
             Seeker.StartPath(Rigidbody2D.position, Target.position, OnPathComplete);
         }    
     }
 
     void OnPathComplete(Path p)
     {
         if(!p.error)
         {
             Path = p;
             CurrentWaypoint = 0;
         }
     }
 }

And here is the components setup for the enemy object (It's called Yaoquizquitl). alt text

alt text

Some final observations: If I use the built-in AI pathfinder, the enemy object moves (but It flies, and I just want it to move on the ground); the correct target is set, that is, the player object (Nehnemiquiteotl); using the custom script, it uses and traces paths to the target correctly.

2021-10-27-1.png (42.2 kB)
2021-10-27-4.png (42.3 kB)
Comment
Add comment
10 |3000 characters needed characters left characters exceeded
▼
  • Viewable by all users
  • Viewable by moderators
  • Viewable by moderators and the original poster
  • Advanced visibility
Viewable by all users

0 Replies

· Add your reply
  • Sort: 

Your answer

Hint: You can notify a user about this post by typing @username

Up to 2 attachments (including images) can be used with a maximum of 524.3 kB each and 1.0 MB total.

Follow this Question

Answers Answers and Comments

149 People are following this question.

avatar image avatar image avatar image avatar image avatar image avatar image avatar image avatar image avatar image avatar image avatar image avatar image avatar image avatar image avatar image avatar image avatar image avatar image avatar image avatar image avatar image avatar image avatar image avatar image avatar image avatar image avatar image avatar image avatar image avatar image avatar image avatar image avatar image avatar image avatar image avatar image avatar image avatar image avatar image avatar image avatar image avatar image avatar image avatar image avatar image avatar image avatar image avatar image avatar image avatar image avatar image avatar image avatar image avatar image avatar image avatar image avatar image avatar image avatar image avatar image avatar image avatar image avatar image avatar image avatar image avatar image avatar image avatar image avatar image avatar image avatar image avatar image avatar image avatar image avatar image avatar image avatar image avatar image avatar image avatar image avatar image avatar image avatar image avatar image avatar image avatar image avatar image avatar image avatar image avatar image avatar image avatar image avatar image avatar image avatar image avatar image avatar image avatar image avatar image avatar image avatar image avatar image avatar image avatar image avatar image avatar image avatar image avatar image avatar image avatar image avatar image avatar image avatar image avatar image avatar image avatar image avatar image avatar image avatar image avatar image avatar image avatar image avatar image avatar image avatar image avatar image avatar image avatar image avatar image avatar image avatar image avatar image avatar image avatar image avatar image avatar image avatar image avatar image avatar image avatar image avatar image avatar image avatar image avatar image avatar image avatar image avatar image avatar image avatar image

Related Questions

How do i get the IsPathPossible() function to ignore some nodes using Astar Pathfinding Project 0 Answers

Yet another 2D pixel perfect movement question 0 Answers

Why doesn't Rigidbody.velocity.x = 0 in a collision? 1 Answer

How to make slider joint immovable by the player 1 Answer

Jump freeze when horizontal movement is being held down 1 Answer


Enterprise
Social Q&A

Social
Subscribe on YouTube social-youtube Follow on LinkedIn social-linkedin Follow on Twitter social-twitter Follow on Facebook social-facebook Follow on Instagram social-instagram

Footer

  • Purchase
    • Products
    • Subscription
    • Asset Store
    • Unity Gear
    • Resellers
  • Education
    • Students
    • Educators
    • Certification
    • Learn
    • Center of Excellence
  • Download
    • Unity
    • Beta Program
  • Unity Labs
    • Labs
    • Publications
  • Resources
    • Learn platform
    • Community
    • Documentation
    • Unity QA
    • FAQ
    • Services Status
    • Connect
  • About Unity
    • About Us
    • Blog
    • Events
    • Careers
    • Contact
    • Press
    • Partners
    • Affiliates
    • Security
Copyright © 2020 Unity Technologies
  • Legal
  • Privacy Policy
  • Cookies
  • Do Not Sell My Personal Information
  • Cookies Settings
"Unity", Unity logos, and other Unity trademarks are trademarks or registered trademarks of Unity Technologies or its affiliates in the U.S. and elsewhere (more info here). Other names or brands are trademarks of their respective owners.
  • Anonymous
  • Sign in
  • Create
  • Ask a question
  • Spaces
  • Default
  • Help Room
  • META
  • Moderators
  • Explore
  • Topics
  • Questions
  • Users
  • Badges