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;;; Sly
;;; Copyright (C) 2013, 2014 David Thompson <dthompson2@worcester.edu>
;;;
;;; This program is free software: you can redistribute it and/or
;;; modify it under the terms of the GNU General Public License as
;;; published by the Free Software Foundation, either version 3 of the
;;; License, or (at your option) any later version.
;;;
;;; This program is distributed in the hope that it will be useful,
;;; but WITHOUT ANY WARRANTY; without even the implied warranty of
;;; MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
;;; General Public License for more details.
;;;
;;; You should have received a copy of the GNU General Public License
;;; along with this program. If not, see
;;; <http://www.gnu.org/licenses/>.
(use-modules (ice-9 match)
(srfi srfi-1)
(srfi srfi-9)
(srfi srfi-42)
(sly game)
(sly sprite)
(sly texture)
(sly tileset)
(sly vector)
(sly window)
(sly scene)
(sly signal)
(sly camera)
(sly color)
(sly transition)
(sly helpers)
(sly keyboard))
(load "common.scm")
;;;
;;; Orthogonal tile map example
;;;
;; This is a quick and dirty tile map implementation. No fancy map
;; loading. Just a hardcoded tile map that demonstrates the
;; split-texture procedure.
;; A small 8x8 array of tile indices.
(define map-width 8)
(define map-height 8)
(define map-tiles
#2((00 01 01 01 01 01 01 02)
(16 17 17 17 17 17 17 18)
(16 17 17 17 17 17 17 18)
(16 17 17 48 49 17 17 18)
(16 17 17 64 65 17 17 18)
(16 17 17 17 17 17 17 18)
(16 17 17 17 17 17 17 18)
(32 33 33 33 33 33 33 34)))
(define tile-width 32)
(define tile-height 32)
(define (random-map width height tileset)
(let ((tiles (make-array 0 height width))
(n (vector-length (tileset-tiles tileset))))
(do-ec (: y height) (: x width)
(array-set! tiles (random n) y x))
tiles))
(define (build-map-layer tiles tileset)
(define build-sprite
(memoize
(lambda (tile-index)
(let ((texture (tileset-ref tileset tile-index)))
(make-sprite texture #:anchor #(0 0))))))
(define (build-tile x y)
(scene-node
(position (vector (* x (tileset-width tileset))
(* y (tileset-height tileset))))
(uniforms `(("color" ,white)))
(children (list (build-sprite (array-ref tiles y x))))))
(match (array-dimensions tiles)
((height width)
(scene-node
(children
(list-ec (: x width) (: y height)
(build-tile x y)))))))
(define tileset (load-tileset "images/tiles.png" 32 32))
(define-signal map-scene
(scene-root
(scene-node
(position
(vector (- 320 (* tile-width 4))
(- 240 (* tile-height 4))))
(children
(list (build-map-layer map-tiles tileset))))))
(define-signal camera
(orthographic-camera map-scene 640 480))
(with-window (make-window #:title "Tilemap")
(start-game-loop camera))
;;; Local Variables:
;;; compile-command: "../pre-inst-env guile tilemap.scm"
;;; End:
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