Instantiating from prefab

Questions & Answers
1

using c#

private string string_input;

i have a game which needs player to type in the alphabets,
for eg. 5 letters.

then it will instantiate 5 gameobjects from prefab, and if the next questions has 7 alphabets, it will then instantiate 7 gameobjects from the prefab.

how do i do the instantiate?

how do i link the instantiate to the string_input?

anyone knows how to go about doing this?

Any help will be appreciated. Thanks.

2

You need a public variable which will contain the prefab (you will put the prefab in the variable threw the inspector).

public GameObject myPrefab;

Then you can check the size of string string_input :

for (int i=0; i<string_input.Length; i++) {
    Instantiate(myPrefab, ...);
}
3

For the first question:

Second:

int noOfPrefabs = string_input.Length;

Use a for loop to instantiate noOfPrefabs prefabs.

4

The first thing to start with is making a script that will hold the Prefabs as a variable. This can be a new script, or in better practise - A game manager script.

You will need to attach this script to a GameObject and it must inherit MonoBehaviour. I’ll provide an example in C#.

using UnityEngine;
using System.Collections;
using System.Collections.Generic;

public class makesThings : MonoBehaviour {
	
	public GameObject _myPrefab;

}

In the inspector, you should now see a variable called _myPrefab. Select your Prefab, or simply drag it over the crosshair. You will then be able to reference this prefab and Instantiate it as follows;

using UnityEngine;
using System.Collections;

public class makesThings : MonoBehaviour {

    public GameObject _myPrefab;

    void letsMakeThings () {

        GameObject _newThing = (GameObject)Instantiate(_myPrefab);

    }
}

Now I am assuming the prefab has a script attached to it? You can access this script, and subsequently any public variables in that script as follows;

Lets assume the script is called “MyScript”.

using UnityEngine;
using System.Collections;

public class makesThings : MonoBehaviour {

    public GameObject _myPrefab;

    void letsMakeThings () {

        GameObject _newThing = (GameObject)Instantiate(_myPrefab);
        MyScript _scriptInstance = (MyScript)_newThing.GetComponent("MyScript");
    }
}

Now its important to note the following;

MyScript _scriptInstance

The first “MyScript” is a TYPE declaration, that is - you are declaring the variable as a type of the class “MyScript”.

 (MyScript)_newThing.GetComponent("MyScript")

The first MyScript here is a cast, to ensure it returns the component as the correct type. It is good practise to always cast like this.

The second “MyScript” is simply the name of the script as a string. Do not put a TYPE here as it will not work.

5

public bool triggered;

if(!triggered){
    					//Debug.Log(string_input.Length);
    	for (int i = 0; i < string_input.Length; i++) 
{
    	  GameObject _newThing = (GameObject)Instantiate(cube);
    					}
    	triggered = true;
    				}

for now i got this to work.