Legacy Documentation: Version 4.6(go to latest)
Language: English
  • C#
  • JS
  • Boo

Script language

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


Suggest a change


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.


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.



Switch to Manual


Sent when another object enters a trigger collider attached to this object (2D physics only).

Further information about the other collider is reported in the Collider2D parameter passed during the call.

See Also: Collider2D class, OnTriggerExit2D, OnTriggerStay2D.

var characterInQuicksand: boolean;

function OnTriggerEnter2D(other: Collider2D) { characterInQuicksand = true; }
using UnityEngine;
using System.Collections;

public class ExampleClass : MonoBehaviour {
    public bool characterInQuicksand;
    void OnTriggerEnter2D(Collider2D other) {
        characterInQuicksand = true;
import UnityEngine
import System.Collections

public class ExampleClass(MonoBehaviour):

	public characterInQuicksand as bool

	def OnTriggerEnter2D(other as Collider2D) as void:
		characterInQuicksand = true