The play-cljs from marxama

play-cljs's Introduction

Introduction

A ClojureScript library for making games. It uses p5.js underneath. There are several ways to create a project:

Boot: boot -d boot/new new -t play-cljs -n hello-world
Nightcode: Choose "Game Project" from its start menu
Nightcoders.net: Choose "Game" when creating a new project
Lightmod: Choose one of the game templates

Documentation

Check out the example games
Read the Dynadocs (interactive docs in your browser!)
Read the old docs (has more info on JS interop)
Join the discussion on r/playcljs
Look at this commented example:

(ns hello-world.core
  (:require [play-cljs.core :as p]))

(defonce game (p/create-game 500 500))
(defonce state (atom {}))

; define a screen, where all the action takes place
(def main-screen
  (reify p/Screen
  
    ; runs when the screen is first shown
    (on-show [this]
      ; start the state map with the x and y position of the text we want to display
      (reset! state {:text-x 20 :text-y 30}))

    ; runs when the screen is hidden
    (on-hide [this])

    ; runs every time a frame must be drawn (about 60 times per sec)
    (on-render [this]
      ; we use `render` to display a light blue background and black text
      ; as you can see, everything is specified as a hiccup-style data structure
      (p/render game
        [[:fill {:color "lightblue"}
          [:rect {:x 0 :y 0 :width 500 :height 500}]]
         [:fill {:color "black"}
          [:text {:value "Hello, world!" :x (:text-x @state) :y (:text-y @state) :size 16 :font "Georgia" :style :italic}]]])
      ; increment the x position of the text so it scrolls to the right
      (swap! state update :text-x inc))))

; start the game
(doto game
  (p/start)
  (p/set-screen main-screen))

Licensing

All files that originate from this project are dedicated to the public domain. I would love pull requests, and will assume that they are also dedicated to the public domain.

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