How can i use a button in the inspector to generate new map ? And how to change vars in real time ?

In this script i create a kind of grid map. But i have some problems.

First it's not filling the grid. It's doing only creating the outer width and height and only on two sides. But i want it to be filled like a grid map.

Another problem is that if i put as width and height 4 it should create 4X4 = 16 width height grid. But it's creating over then 100 objects.

Also how can i make that if i will change the variables values in the editor it will effect the objects in real time ?

Last problem is how can i use the custom button ot generate each time a new grid ? Like reset.

Code (csharp):

1.  
2. using System.Collections;
3. using System.Collections.Generic;
4. using UnityEngine;
5.  
6. [ExecuteInEditMode]
7. public class LevelMap : MonoBehaviour
8. {
9.     public GameObject Node;
10.     public Vector3 nodeSize;
11.     public int mapWidth;
12.     public int mapHeight;
13.     public float Spacing = 2.0f;
14.  
15.     // Update is called once per frame
16.     void Update()
17.     {
18.         for (int i = 0; i < mapWidth; i++)
19.         {
20.             Instantiate(Node);
21.             float positionWidth = Spacing * (float)i;
22.             Node.transform.localPosition = new Vector3(positionWidth, 0, 0);
23.  
24.             for (int x = 0; x < mapHeight; x++)
25.             {
26.                 Instantiate(Node);
27.                 float positionHeight = Spacing * (float)x;
28.                 Node.transform.localPosition = new Vector3(0, 0, positionHeight);
29.             }
30.         }
31.     }
32.  
33.     public void GenerateNew()
34.     {
35.  
36.     }
37. }
38.  

And the button script:

Code (csharp):

1.  
2. using UnityEngine;
3. using System.Collections;
4. using UnityEditor;
5.  
6. [CustomEditor(typeof(LevelMap))]
7. public class customButton : Editor
8. {
9.     public override void OnInspectorGUI()
10.     {
11.         DrawDefaultInspector();
12.  
13.         LevelMap lm = (LevelMap)target;
14.         lm.GenerateNew();
15.     }
16. }
17.  

 

It does that. Just change any public (or [SerializeField]) in the Inspector and it changes it during play, you dont have to do anything special.

There are many ways:

1. Create a UI
2. Use the legacy UI (OnGUI)
3. Use the ContextMenu attribute - Video <- I would probably use this one

 

i have an issue what i ran to.. why would you instantiate in an update function.
and above what TaleOf4Gamers said you could do that.

but there is also a way to code when you click the button. make sure that you attach the script onto the button it self.

Code (CSharp):

1. gameObject.GetComponent<UnityEngine.UI.Button>().onClick.AddListener(() => GenerateNew());

but i also improved your spawning so it does not spawn over 100+ objects.
you can call Start as an void but also as an IEnumerator is more effecient for your cpu to handle.

Code (CSharp):

1. // Update is called once per frame
2.     IEnumerator Start()
3.     {
4.         for (int i = 0; i < mapWidth; i++)
5.         {
6.             for(int x = 0; x < mapHeight; x++)
7.             {
8.                 GameObject go = Instantiate(Node, this.transform, true);
9.  
10.                 float offsetWidth = Spacing * i;
11.                 float offsetHeight = Spacing * x;
12.  
13.                 go.transform.localPosition = new Vector3(offsetWidth, 0, offsetHeight);
14.             }
15.         }
16.  
17.         yield return null;
18.     }