A custom button I wrote for Dodge that Keg

ClickButton.js

ig.module(
        'game.entities.clickButton'
)
.requires(
        'impact.entity'
)
.defines(function(){

        EntityClickButton = ig.Entity.extend({
                size: {x: 64, y:64},

                init: function(x, y, settings){
                        console.log("init'd");
                        this.parent(x, y, settings);
                },

                update: function(){
                    if (ig.input.pressed('leftButton') && this.inFocus()) {
                        ig.log('clicked');
                    }
                    this.parent();
                },
                 
                inFocus: function() {
                        console.log('Mouse: '+ig.input.mouse.x+','+ig.input.mouse.y);
                        console.log('This: '+this.pos.x+','+this.pos.y);
                        console.log('test' + 3<4);
                        console.log('Checking inFocus: #1:'+this.pos.x <= ig.input.mouse.x);
                        console.log('Checking inFocus: #2:'+(ig.input.mouse.x + ig.game.screen.x) <= this.pos.x + this.size.x);
                        console.log('Checking inFocus: #3:'+this.pos.y <= (ig.input.mouse.y + ig.game.screen.y));
                        console.log('Checking inFocus: #4:'+(ig.input.mouse.y + ig.game.screen.y) <= this.pos.y + this.size.y);
                    return (
                       (this.pos.x <= ig.input.mouse.x) &&
                       (ig.input.mouse.x <= this.pos.x + this.size.x) &&
                       (this.pos.y <= ig.input.mouse.y) &&
                       (ig.input.mouse.y <= this.pos.y + this.size.y)
                    );
                 },
        });
});