koobas.hobune.stream
Instantiate Prefab from within class
I'm having a bit of difficulty figuring this out, but I think I am overlooking something simple.
I had my script for a level generator which would instantiate prefabs to build the level. It followed this pattern, just in the root of the .js file which I attached to a blank object in the scene.
public var wall : Transform;
function Start () {
for (var x = 0; x < 10; x++){
var newTile : Transform;
newTile = wall;
var instTile : Transform = Instantiate(newTile, Vector3(x, 0,0),Quaternion.identity);
}
}
At which point I drag the prefab onto the script variables area in the Inspector.
However, I want to create a class that will do the instantiating. I know that I need to use GameObject.Instantiate, but my issue comes from not having the Prefabs available within the class.
If I create a class and try to access the prefabs, it says it cannot recognize the prefabs.
Here is an example of what I was trying using classes:
public var wall : Transform;
class area{
function area(){
var newTile : Transform;
newTile = wall;
var instTile : Transform = GameObject.Instantiate(newTile, Vector3(x, 0,0),Quaternion.identity);
}
}
function start(){
var currentZone = new area();
}
Which tells me that there is no such object as "wall". If I declare the prefabs within the class, I can no longer drag them onto the script in the Inspector Panel.
Am I missing something obvious here?
As far as I understand, an inner class is not able to access the outer class' variables implicitly in UnityScript. You can access them by supplying the outer instance explicitly, it's not so elegant though.
Here's a fixed script:
public var wall : Transform;
class area{
var outer;
function area(_outer) {
outer = _outer;
var newTile : Transform;
newTile = outer.wall;
var instTile : Transform = GameObject.Instantiate(newTile, Vector3(0, 0,0),Quaternion.identity);
}
}
function Start(){
var currentZone = new area(this);
}
Thanks, that does work. I hadn't known you could pass the outer class like that!
There is two ways to spawn some prefab on the fly.
First one : Use a list of public members which describe each prefab you need for your level and spawn them in the start or awake function. For example (sorry, but I can't write js script... I hope you are able to translate C#):
public class LevelLoader : MonoBehavior
{
public Transform WallPrefab;
public Transform EnnemyPrefab;
protected void Start()
{
GameObject wallObject1 = GameObject.Instanciate(this.WallPrefab);
GameObject wallObject2 = GameObject.Instanciate(this.WallPrefab);
// ...
}
}
Or you can use the Resources.Load() method. Put your wall prefab in the Resources folder and then use the load function to instanciate your prefab.
Hope it's helped...
cheers, Thor
