basic skeleton
author |
Steve Losh <steve@stevelosh.com> |
date |
Sun, 08 Jul 2012 07:14:54 -0400 |
parents |
28faced3ca08 |
children |
17efffc997c6 |
(ns caves.core
(:require [lanterna.screen :as s]))
; Data Structures -------------------------------------------------------------
(defrecord UI [kind])
(defrecord World [])
(defrecord Game [world uis input])
; Utility Functions -----------------------------------------------------------
(defn clear-screen [screen]
(let [blank (apply str (repeat 80 \space))]
(doseq [row (range 24)]
(s/put-string screen 0 row blank))))
; Input -----------------------------------------------------------------------
(defmulti process-input
(fn [ui input game]
(:kind ui)))
(defmethod process-input :start [ui input game]
(if (= input :enter)
(assoc game :uis [(new UI :win)])
(assoc game :uis [(new UI :lose)])))
(defmethod process-input :win [ui input game]
(if (= input :escape)
(assoc game :uis [])
(assoc game :uis [(new UI :start)])))
(defmethod process-input :lose [ui input game]
(if (= input :escape)
(assoc game :uis [])
(assoc game :uis [(new UI :start)])))
(defn get-input [game screen]
(assoc game :input (s/get-key-blocking screen)))
; Drawing ---------------------------------------------------------------------
(defmulti draw-ui
(fn [ui game screen]
(:kind ui)))
(defmethod draw-ui :start [ui game screen]
(s/put-string screen 0 0 "Welcome to the Caves of Clojure!")
(s/put-string screen 0 1 "Press enter to win, anything else to lose."))
(defmethod draw-ui :win [ui game screen]
(s/put-string screen 0 0 "Congratulations, you win!")
(s/put-string screen 0 1 "Press escape to exit, anything else to restart."))
(defmethod draw-ui :lose [ui game screen]
(s/put-string screen 0 0 "Sorry, better luck next time.")
(s/put-string screen 0 1 "Press escape to exit, anything else to go."))
(defn draw-game [game screen]
(clear-screen screen)
(doseq [ui (:uis game)]
(draw-ui ui game screen))
(s/redraw screen))
; Main ------------------------------------------------------------------------
(defn run-game [game screen]
(loop [{:keys [input uis] :as game} game]
(when-not (empty? uis)
(draw-game game screen)
(if (nil? input)
(recur (get-input game screen))
(recur (process-input (last uis) input (dissoc game :input)))))))
(defn new-game []
(new Game
(new World)
[(new UI :start)]
nil))
(defn main [screen-type]
(future
(let [screen (s/get-screen screen-type)]
(s/in-screen screen
(run-game (new-game) screen)))))
(defn -main [& args]
(let [args (set args)
screen-type (cond
(args ":swing") :swing
(args ":text") :text
:else :auto)]
(main screen-type)))
(comment
(main :swing))