129 lines
3.6 KiB
Scheme
129 lines
3.6 KiB
Scheme
(define-module (game model level)
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#:use-module (ice-9 match)
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#:use-module (ice-9 pretty-print)
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#:use-module (ice-9 textual-ports)
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#:use-module (srfi srfi-1)
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#:use-module (srfi srfi-9)
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#:use-module (srfi srfi-64)
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#:export (level-width
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level-height
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level-tiles
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level-entities
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level-player
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level-goal
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level-parse-file
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level-tile-at
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))
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(define-record-type <level>
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(%make-level width height tiles goal player entities)
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level?
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(width level-width)
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(height level-height)
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(tiles level-tiles)
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(goal level-goal)
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(player level-player)
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(entities level-entities))
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(define (parse-tile c)
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(case c
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((#\W) 'wall)
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((#\B) 'brick)
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((#\H) 'ladder)
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((#\P) 'player)
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((#\E) 'enemy)
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((#\G) 'goal)
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(else 'empty)))
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(define (content->lines content)
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(filter (lambda (line) (not (string-null? line)))
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(map
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(lambda (line)
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(string-trim-right
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(car (string-split line #\-))
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#\space))
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(string-split content #\newline))))
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(define (parse-lines lines)
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(fold append
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'()
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(map
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(lambda (line)
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(map parse-tile (string->list line)))
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lines)))
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(define (level-parse content)
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(let* ((lines (content->lines content))
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(width (string-length (car lines)))
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(height (length lines))
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(tiles (list->vector
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(parse-lines lines)))
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(entities '()))
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(%make-level width height tiles #f #f entities)))
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(define (level-parse-file filename)
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(level-parse (call-with-input-file filename get-string-all)))
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(define (level-tile-at-row-col level row col )
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(let ((index (+ (* row (level-width level)) col)))
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(vector-ref (level-tiles level) index)))
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(define cell-size 16)
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(define (coord->cell coord)
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(inexact->exact (floor (/ coord cell-size))))
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(define (level-tile-at level x y )
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(level-tile-at-row-col level (coord->cell y) (coord->cell x)))
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(test-begin "level")
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(test-assert (level? (level-parse "WWWWW\nWP GW\nWWWWW\n")))
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(test-equal (level-width (level-parse "WWWWW\nWP GW\nWWWWW\n")) 5)
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(test-equal (level-height (level-parse "WWWWW\nWP GW\nWWWWW\n")) 3)
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(test-equal (level-tiles (level-parse "W")) #(wall))
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(test-equal
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(level-tiles (level-parse "WWWWW\nWP GW\nWWWWW\n"))
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#(wall wall wall wall wall wall player empty goal wall wall wall wall wall wall))
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(test-equal
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(level-tiles (level-parse "--- ignore this line\nWWWWW\nWP GW - must be ignored\nWWWWW\n"))
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#(wall wall wall wall wall wall player empty goal wall wall wall wall wall wall))
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(test-equal (content->lines "WWWWW\nWP GW\nWWWWW\n") '("WWWWW" "WP GW" "WWWWW"))
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(test-equal (parse-tile #\W) 'wall)
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(test-equal (parse-tile #\B) 'brick)
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(test-equal (parse-tile #\H) 'ladder)
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(test-equal (parse-tile #\P) 'player)
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(test-equal (parse-tile #\E) 'enemy)
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(test-equal (parse-tile #\G) 'goal)
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(test-equal (parse-tile #\space) 'empty)
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(test-equal (level-width (level-parse-file "assets/levels/level-1.map")) 40)
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(test-equal (level-height (level-parse-file "assets/levels/level-1.map")) 30)
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(test-equal
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(level-tile-at-row-col (level-parse "WWWWW\nWP GW\nWWWWW\n") 1 1)
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'player)
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(test-equal
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(level-tile-at-row-col (level-parse "WWWWW\nWP GW\nWWWWW\n") 1 3)
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'goal)
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(test-equal
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(level-find-player (level-parse "WWWWW\nWP GW\nWWWWW\n") 1 3)
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(vec2 16 16))
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(test-equal
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(level-find-goal (level-parse "WWWWW\nWP GW\nWWWWW\n") 1 3)
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(vec2 48 16))
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(test-equal
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(level-find-goal (level-parse "WWWWW\nWE EW\nWWWWW\n") 1 3)
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(list (vec 16 16) (vec2 48 16)))
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(test-end "level")
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