christianblunden

;; # Colours and Shapes in Clojure

;; This web page allows you to ask your computer to do tasks for you, specifically draw one or more shapes and change the colour of those shapes. We ask the computer to do these tasks in a programming language called Clojure.

;; Clojure is a functional programming language. The behaviour of your code is expressed by calling one or more functions.

;; Each function has a particular thing it does when you call it.  We will discover functions that:

;; * draw particular shapes

christianblunden

(ns tron.xianralph
  (:require [tron.core :as tron]))

(defn move [[x y] [dx dy]] [(+ x dx) (+ y dy)])
(defn up [point] (move point [0 1]))
(defn down [point] (move point [0 -1]))
(defn right [point] (move point [1 0]))
(defn left [point] (move point [-1 0]))
(def directions #{up down right left})