Unity 2018 Artificial Intelligence Cookbook - Second Edition

How to do it...

Even though this recipe is only for defining a function, please take into consideration the comments in the code for a better understanding of the implementation and code flow:

1. Modify the Graph class and add a couple of member variables, one for storing the path and the other for knowing whether the coroutine has finished:

public List<Vertex> path; 
public bool isFinished; 

2. Declare the member function:

public IEnumerator GetPathInFrames(GameObject srcObj, GameObject dstObj, Heuristic h = null) 
{ 
    //next steps 
} 

3. Include the following member variables at the beginning:

isFinished = false; 
path = new List<Vertex>(); 
if (srcObj == null || dstObj == null) 
{ 
    path = new List<Vertex>(); 
    isFinished = true; 
    yield break; 
} 

4. Modify ...