src/caves/world/generation.clj @ 1a3a4f8d5d85
Refactor the world code into separate files.
This pulls out the world generation code into its own file. It was
getting a bit crowded in there.
author |
Steve Losh <steve@stevelosh.com> |
date |
Wed, 01 Aug 2012 21:13:37 -0400 |
parents |
(none) |
children |
f15b8173a124 |
(ns caves.world.generation
(:use [caves.world.core :only [tiles get-tile-from-tiles random-coordinate
world-size ->World]]))
(defn random-tiles []
(let [[cols rows] world-size]
(letfn [(random-tile []
(tiles (rand-nth [:floor :wall])))
(random-row []
(vec (repeatedly cols random-tile)))]
(vec (repeatedly rows random-row)))))
(defn get-smoothed-tile [block]
(let [tile-counts (frequencies (map :kind block))
floor-threshold 5
floor-count (get tile-counts :floor 0)
result (if (>= floor-count floor-threshold)
:floor
:wall)]
(tiles result)))
(defn block-coords [x y]
(for [dx [-1 0 1]
dy [-1 0 1]]
[(+ x dx) (+ y dy)]))
(defn get-block [tiles x y]
(map (partial get-tile-from-tiles tiles)
(block-coords x y)))
(defn get-smoothed-row [tiles y]
(mapv (fn [x]
(get-smoothed-tile (get-block tiles x y)))
(range (count (first tiles)))))
(defn get-smoothed-tiles [tiles]
(mapv (fn [y]
(get-smoothed-row tiles y))
(range (count tiles))))
(defn smooth-world [{:keys [tiles] :as world}]
(assoc world :tiles (get-smoothed-tiles tiles)))
(defn random-world []
(let [world (->World (random-tiles) {})
world (nth (iterate smooth-world world) 3)]
world))