/**
     * checks if mouse hits an objectentity and dispatches given events
     * @param {CustomEvent} mouseEvent - event containing mouse position
     * @param {CustomEvent} event1 ButtonClickEvent or ButtonFocusEvent
     * @param {CustomEvent} event2 undefined or ButtonUnfocusEvent
     */
    this.getObjectEntityOnEvent = function(mouseEvent, event1, event2) {

        // checking - if Scene is active
        if(that.active) {

            // get position
            that.rect = that.domEl.getBoundingClientRect();

            // calculate mouse coordinates
            jumruCore.mouseBox.setBox((mouseEvent.clientX -that.rect.left),(mouseEvent.clientY -that.rect.top),1,1);

            // get layers
            var length = that.children.length;

            // get highest layer first
            for(var i = length-1; i >= 0; i--) {

                // get ObjectEntities
                var oeLength = that.children[i].children.length;

                // get highest ObjectEntity first
                for(var j = oeLength-1; j >= 0; j--) {

                    var oe = that.children[i].children[j];

                    if(oe.active) {
                        // if ObjectEntity is active, check if it is clicked
                        if(oe instanceof jumru.ObjectEntity) {

                            if(oe.isTouched()){

                                //if an element in the menu map is defined
                                //update it as current button
                                if(jumruCore.inputmanager.menuMap[jumruCore.gamemode]){
                                    jumruCore.inputmanager.menuMap[jumruCore.gamemode].setCurrButton(oe);
                                }

                                oe.fire(event1); //ButtonClick, ButtonFocus
                                return;
                            }
                            /*//TODO not used any longer?
                            else {
                                if(event2 != undefined) {
                                    console.log(oe.name);
                                    oe.fire(event2); //ButtonUnfocus
                                }
                            }*/
                        }
                    }
                }
            }
        }
    };

    //add scene to jumruCore.scenes
    jumruCore.scenes.push(this);

    return this;
};