Setting 'target object' on instantiated prefab.

Unity Engine
1

I have a prefab spawn which creates an object+script. This script needs to alter another script attached to another object.

If I manually place the prefab into the scene and then set the ‘target object’ (which is permanent and static) from the inspector, it works perfectly. However, I can’t set this ‘target object’ for the prefab under the project tab (ie. so that it inherently has this target when it spawns) - is there some way I can automatically set this target when the prefab spawns, or is there some easier method I am missing?

Thanks

2

You can set it up like this.

var target : transform;

function Start(){
target = GameObject.FindWithTag("YourTag").transform;
}
3

Thanks for the reply, but I still can’t figure out how to incorporate it into my code. I’m prety new at this, let me try and explain a bit better. Here’s what I have at the moment:

var fallspeed = 1;
var lifeTime = 10;
var target : InkTotal;

function Awake()
{
Destroy (gameObject, lifeTime);
}


function Update() 
{
transform.Translate(0.005*-fallspeed*Time.deltaTime, 0, 0);
}


function OnMouseDown()

{if (target.inkTotal < 10)

{
Destroy (gameObject);
target.inkTotal ++;
target.cartridgeTotal = 0;
Debug.Log (target.cartridgeTotal); 
}}

This^^ is the script running on the spawned object.
InkTotal = the script on target object.
inkTotal cartridgeTotal are variables inside InkTotal.

This works when I manually place the prefab and specify which object(InkCounter) has the ‘InkTotal’ script attached to it, but when the prefab is spawned into existence I get a null reference error, because no object is assigned under the inspector.

How can I tell it where InkTotal is located as soon as it is created?

Thanks

4

Ok, here is your code with the built in find function. Change "InkCartridge to whatever the name is of the target, and create a function in the InkTotal script to do the stuff I commented out. The reason you’ll have to do the function in the other script is because it kept coming up with a weird error. I’m sure there’s away around that but this is what I could come up with that worked.

var fallspeed = 1; 
var lifeTime = 10;
var target; 

function Awake() 
{ 
Destroy (gameObject, lifeTime); 
} 

function Start(){
target = transform.Find("InkCartridge").GetComponent(InkTotal); 
}


function Update() 
{ 
transform.Translate(0.005*-fallspeed*Time.deltaTime, 0, 0); 
} 


function OnMouseDown() {
if (target.inkTotal < 10) 
{ 
target.GetComponent(InkTotal).YourFunction();
//Execute this code in a function in your other script.
/*Destroy (gameObject); 
target.inkTotal ++; 
target.cartridgeTotal = 0; 
Debug.Log (target.cartridgeTotal);*/
}}
1 Like
5

Thanks for your help. Turns out I just had to make inkTotal and cartridgeTotal static vars instead of vars ¬_¬