blob: 7f2b48efab2ab5b9d55213af7a3fb3ee4d6632e5 (
plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
|
;;; 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 (srfi srfi-1)
(srfi srfi-9)
(srfi srfi-42)
(sly game)
(sly sprite)
(sly texture)
(sly tileset)
(sly vector)
(sly window))
(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.
;; tiles is a 2d array of texture regions.
(define-record-type <map-layer>
(make-map-layer width height tile-width tile-height tiles)
map-layer?
(width map-layer-width)
(height map-layer-height)
(tile-width map-layer-tile-width)
(tile-height map-layer-tile-height)
(tiles map-layer-tiles))
(define draw-map-layer
(lambda (layer)
(do-ec (: y (map-layer-height layer))
(: x (map-layer-width layer))
(let ((tile (array-ref (map-layer-tiles layer) y x)))
(draw-sprite tile)))))
;; A small 8x8 array of tile indices.
(define map-width 8)
(define map-height 8)
(define map-tiles
#2u32((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)))
(do-ec (: y height) (: x width)
(array-set! tiles (random n) y x))
tiles))
(define (tiles->sprites width height tile-width tile-height tileset tiles)
(define (build-sprite x y)
(let ((region (tileset-ref tileset (array-ref tiles y x))))
(make-sprite region
#:position (vector (* x tile-width)
(* y tile-height))
#:anchor #(0 0))))
(let ((sprites (list-ec (: y height)
(list-ec (: x width)
(build-sprite x y)))))
(list->array 2 sprites)))
(define (build-map)
;; Load tileset and build map layer
(let ((tileset (load-tileset "images/tiles.png" 32 32)))
(make-map-layer map-width map-height tile-width tile-height
(tiles->sprites map-width
map-height
tile-width
tile-height
tileset
map-tiles))))
(define layer (build-map))
(add-hook! draw-hook (lambda (dt alpha) (draw-map-layer layer)))
(with-window (make-window #:title "Tilemap")
(start-game-loop))
|
