FlxMouseEventManager allows FlxSprites to listen to mouse events like MouseDown, MouseUp, MouseOver and MouseOut.

To activate it, simply add sprites to the manager and implement the event callbacks:

import flixel.input.mouse.FlxMouseEventManager;

var sprite = new FlxSprite();
FlxMouseEventManager.add(sprite, onMouseDown, onMouseUp, onMouseOver, onMouseOut);

function onMouseDown(sprite:FlxSprite) {}
function onMouseUp(sprite:FlxSprite) {}
function onMouseOver(sprite:FlxSprite) {}
function onMouseOut(sprite:FlxSprite) {}