Question A* Pathfinding Project: How to get remaining distance on the path

I want to make a very simple script that gonna do only that, show how far it is to the target using A* pathfinding, i am a complete noob at coding so explanation would be appreciated.

 

This can give you good start.

Code (csharp):

1.  
2.  
3. Seeker.StartPath(start, target, OnPathCalculated, graphMask);
4.  
5.    void OnPathCalculated(Path path){
6.  
7.        if(path.error){
8.            return;
9.        }
10.  
11.         float pathLength = path.GetTotalLength()
12. }
13.  

Edit:I have assumed you are using A* Pathfinding by aron granberg.

 

yes, i using that asset, but the free version of it

 

Code (CSharp):

1. using System.Collections;
2. using System.Collections.Generic;
3. using UnityEngine;
4. using Pathfinding;
5.  
6. public class PFing : MonoBehaviour
7. {
8.  
9.     Seeker.StartPath(start, target, OnPathCalculated, graphMask);
10.    void OnPathCalculated(Path path)
11.     {
12.  
13.         if (path.error)
14.         {
15.             return;
16.         }
17.  
18.         float pathLength = path.GetTotalLength()
19. }
20.  
21. }

for every field in this "Seeker.StartPath(start, target, OnPathCalculated, graphMask);" line it tells me that "it does not exist in the current context" what am i missing?

 

Ok i see you are real beginner.
Try this.

Code (CSharp):

1. using System.Collections;
2. using System.Collections.Generic;
3. using UnityEngine;
4. using Pathfinding;
5.  
6. public class PFing : MonoBehaviour
7. {
8.  
9. public Seeker seeker;
10.  
11.  
12. void Start(){
13.     seeker.StartPath(start, target, OnPathCalculated);
14. }
15.  
16.    void OnPathCalculated(Path path)
17.     {
18.  
19.         if (path.error)
20.         {
21.             return;
22.         }
23.  
24.         float pathLength = path.GetTotalLength()
25. }
26.  
27. }

 

huh, is it supposed to return length in console instead of public float or am i missing something?

 

May I ask what are you need it for ?
Because it looks like your programming skill is "Hello World" level.
And it might be good idea to start with a basics.

 

i make an xcom like game and want to get the path length to see if it's more or less then a treshold to spawn a tile that player can click on, and i use playmaker so most of the logic i made in it, but there is no action for astar to get the length of the path which is the crucial for field of movement visualization, i managed to make it with unity navmesh but it's too slow, so i need astar

 

and yes, my coding skills are low, i do understand principles but my problem is syntax and what even can i do, and i have no clue where to look for things i need, i look at astar documentation but it's just confusing for me

 

I will not help you with playmaker and how to grab data from component to playmaker since I don't use it.
But since it is a turn based game and you are just a beginner I suggest using:

Code (csharp):

1.  
2.         var path = Pathfinding.ABPath.Construct(start, end);
3.         AstarPath.BlockUntilCalculated(path);
4.  

This will block thread until path is completed.

 

where can i found an extensive explanation on astar functions? i tried to google what "path.GetTotalLength" actually do, but all the documentations i found doesn't really tell much

 

You are joking, right ?

Here is a documentation:
https://arongranberg.com/astar/docs/

 

oh, there were a search bar... didn't saw it for all this time for some reason