Unity Script Reference – Object.Instantiate

Object.Instantiate

static function Instantiate (original : Object, position : Vector3, rotation : Quaternion) : Object

Description

Clones the object original and returns the clone.

Clones the object original, places it at position and sets the rotation to rotation, then returns the cloned object. This is essentially the same as using duplicate command (cmd-d) in Unity and then moving the object to the given location. If a game object, component or script instance is passed, Instantiate will clone the entire game object hierarchy, with all children cloned as well. All game objects are activated.
See Also: In depth Prefab Instantiate discussion

JavaScripts

// Instantiates 10 copies of prefab each 2 units apart from each other

var prefab : Transform;

for (var i : int = 0;i < 10; i++) {
Instantiate (prefab, Vector3(i * 2.0, 0, 0), Quaternion.identity);
}

using UnityEngine;
using System.Collections;

public class example : MonoBehaviour {
public Transform prefab;
void Awake() {
int i = 0;
while (i < 10) {
Instantiate(prefab, new Vector3(i * 2.0F, 0, 0), Quaternion.identity);
i++;
}
}
}

import UnityEngine
import System.Collections

class example(MonoBehaviour):

public prefab as Transform

def Awake():
i as int = 0
while i < 10:
Instantiate(prefab, Vector3((i * 2.0F), 0, 0), Quaternion.identity)
i++

Instantiate is most commonly used to instantiate projectiles, AI Enemies, particle explosions or wrecked object replacements.

JavaScripts

// Instantiate a rigidbody then set the velocity

var projectile : Rigidbody;

function Update () {
// Ctrl was pressed, launch a projectile
if (Input.GetButtonDown("Fire1")) {
// Instantiate the projectile at the position and rotation of this transform
var clone : Rigidbody;
clone = Instantiate(projectile, transform.position, transform.rotation);

// Give the cloned object an initial velocity along the current
// object's Z axis
clone.velocity = transform.TransformDirection (Vector3.forward * 10);
}
}

using UnityEngine;
using System.Collections;

public class example : MonoBehaviour {
public Rigidbody projectile;
void Update() {
if (Input.GetButtonDown("Fire1")) {
Rigidbody clone;
clone = Instantiate(projectile, transform.position, transform.rotation);
clone.velocity = transform.TransformDirection(Vector3.forward * 10);
}
}
}

import UnityEngine
import System.Collections

class example(MonoBehaviour):

public projectile as Rigidbody

def Update():
if Input.GetButtonDown('Fire1'):
clone as Rigidbody
clone = Instantiate(projectile, transform.position, transform.rotation)
clone.velocity = transform.TransformDirection((Vector3.forward * 10))

Instantiate can also clone script instances directly. The entire game object hierarchy will be cloned and the cloned script instance will be returned.

JavaScripts

// Instantiate a prefab with an attached Missile script
var projectile : Missile;

function Update () {
// Ctrl was pressed, launch a projectile
if (Input.GetButtonDown("Fire1")) {
// Instantiate the projectile at the position and rotation of this transform
var clone : Missile;
clone = Instantiate(projectile, transform.position, transform.rotation);

// Set the missiles timeout destructor to 5
clone.timeoutDestructor = 5;
}
}

using UnityEngine;
using System.Collections;

public class example : MonoBehaviour {
public Missile projectile;
void Update() {
if (Input.GetButtonDown("Fire1")) {
Missile clone;
clone = Instantiate(projectile, transform.position, transform.rotation);
clone.timeoutDestructor = 5;
}
}
}

import UnityEngine
import System.Collections

class example(MonoBehaviour):

public projectile as Missile

def Update():
if Input.GetButtonDown('Fire1'):
clone as Missile
clone = Instantiate(projectile, transform.position, transform.rotation)
clone.timeoutDestructor = 5

After cloning an object you can also use GetComponent to set properties on a specific component attached to the cloned object.

static function Instantiate (original : Object) : Object

Description

Clones the object original and returns the clone.

This function preserves the position and rotation of the cloned object. This is essentially the same as using duplicate command (cmd-d) in Unity. If the object is a Component or a GameObject then entire game object including all components will be cloned. If the game object has a transform all children are cloned as well. All game objects are activated after cloning them.
See Also: In depth Prefab Instantiate discussion

JavaScripts

// Instantiates prefab when any rigid body enters the trigger.
// It preserves the prefab's original position and rotation.

var prefab : Transform;

function OnTriggerEnter () {
Instantiate (prefab);
}

using UnityEngine;
using System.Collections;

public class example : MonoBehaviour {
public Transform prefab;
void OnTriggerEnter() {
Instantiate(prefab);
}
}

import UnityEngine
import System.Collections

class example(MonoBehaviour):

public prefab as Transform

def OnTriggerEnter():
Instantiate(prefab)

Note that the Instantiate can clone any type of Object including scripts.