Zero Asset Game Engine

A "zero asset game" is a game that does not use any external art assets.

Game art is instead generated procedurally or by using artifacts of the rendering environment.

The following is a screenshot of a tiny game engine I built a little while ago in ClojureScript.

The renderer runs on Facebook's React library so it is just a couple of lines of code.

I've spread it over several lines here for readability:

; DOM "scene grapher"
[:div {:id "game-board"}
  (doall
    (map
      (fn [[id e]]
        [:div {:class (str "sprite c" (:color e))
           :key id
           :style (compute-position-style e)
           :on-click (fn [ev] (sfx/play :blip))}
        (:symbol e)])
      (:entities @game-state)))]

The sprites are utf8 characters which are instantiated like this:

(make-entity {:symbol "◍"
              :color 0
              :pos [-20 300]
              :angle 0
              :behaviour behaviour-rock})

The function behaviour-rock here gets called once per frame and returns the new immutable entity-state for the next frame.

When you click on something the blip sound is generated procedurally in the browser using jsfxr.