Language: English
  • C#
  • JS
  • Boo

Script language

Select your preferred scripting language. All code snippets will be displayed in this language.

MonoBehaviour.FixedUpdate()

Suggest a change

Success!

Thank you for helping us improve the quality of Unity Documentation. Although we cannot accept all submissions, we do read each suggested change from our users and will make updates where applicable.

Close

Sumbission failed

For some reason your suggested change could not be submitted. Please try again in a few minutes. And thank you for taking the time to help us improve the quality of Unity Documentation.

Close

Cancel

Switch to Manual

Description

This function is called every fixed framerate frame, if the MonoBehaviour is enabled.

FixedUpdate should be used instead of Update when dealing with Rigidbody. For example when adding a force to a rigidbody, you have to apply the force every fixed frame inside FixedUpdate instead of every frame inside Update.

	// Apply a upwards force to the rigid body every frame

function FixedUpdate () { rigidbody.AddForce (Vector3.up); }
using UnityEngine;
using System.Collections;

public class ExampleClass : MonoBehaviour {
    void FixedUpdate() {
        rigidbody.AddForce(Vector3.up);
    }
}
import UnityEngine
import System.Collections

public class ExampleClass(MonoBehaviour):

	def FixedUpdate() as void:
		rigidbody.AddForce(Vector3.up)

In order to get the elapsed time since last call to Update, use Time.deltaTime This function is only called if the Behaviour is enabled. Override this function in order to provide your component's functionality.