MonoBehaviour.OnTriggerEnter2D(Collider2D)

Description

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.

Notes: Trigger events will be sent to disabled MonoBehaviours, to allow enabling Behaviours in response to collisions.

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;
    }
}