Have you ever played Asteroids? If you haven't, Asteroids is an arcade space shooter first released by Atari in 1979. In Asteroids, you are the pilot of a ship flying through space. As you do so, you get surrounded by asteroids and flying saucers you have to shoot and destroy.

Developing the whole game in one chapter is too ambitious and would distract us from the subject of this book. We will limit ourselves to making sure we have a ship on the screen we can fly around as well as shoot space bullets into the void. By the end of this chapter, we will have something that looks like what is shown in the following screenshot:

To get started, we will create a newClojureScript project using the same leiningen template we used in the previous chapter, cljs-start (see https://github.com/magomimmo/cljs-start):

lein new cljs-start reagi-game

Next, add the following dependencies to your project file:

   [org.clojure/clojurescript "0.0-2138"]
   [reagi "0.10.0"]
   [rm-hull/monet...