Arcadia Collision message hack

Bumps.cs

using UnityEngine;
using System.Collections;

public class Bumps : MonoBehaviour {
    void OnCollisionEnter(Collision collision) {
        SendMessage("OnBumpEnter", collision, SendMessageOptions.DontRequireReceiver);         
    }
    void OnCollisionEnter2D(Collision2D collision) {
        SendMessage("OnBumpEnter2D", collision, SendMessageOptions.DontRequireReceiver);         
    }
    void OnCollisionExit(Collision collision) {
        SendMessage("OnBumpExit", collision, SendMessageOptions.DontRequireReceiver);         
    }
    void OnCollisionExit2D(Collision2D collision) {
        SendMessage("OnBumpExit2D", collision, SendMessageOptions.DontRequireReceiver);         
    }
    void OnCollisionStay(Collision collision) {
        SendMessage("OnBumpStay", collision, SendMessageOptions.DontRequireReceiver);         
    }
    void OnCollisionStay2D(Collision2D collision) {
        SendMessage("OnBumpStay2D", collision, SendMessageOptions.DontRequireReceiver);         
    }
}

protocols.clj

(ns hard.protocols)

(defprotocol IBumpEnter
	(OnBumpEnter [a b]))
(defprotocol IBumpEnter2D
	(OnBumpEnter2D [a b]))
(defprotocol IBumpExit
	(OnBumpExit [a b]))
(defprotocol IBumpExit2D
	(OnBumpExit2D [a b]))
(defprotocol IBumpStay
	(OnBumpStay [a b]))
(defprotocol IBumpStay2D
	(OnBumpStay2D [a b]))