75 lines
2.3 KiB
Scheme
75 lines
2.3 KiB
Scheme
(define-module (game render level)
|
|
#:use-module (game model level)
|
|
#:use-module (game util assets)
|
|
#:use-module (srfi srfi-64)
|
|
#:use-module (chickadee graphics color)
|
|
#:use-module (chickadee graphics sprite)
|
|
#:use-module (chickadee graphics texture)
|
|
#:use-module (chickadee math vector)
|
|
#:export (render-level-load
|
|
render-level-draw
|
|
render-level-set!
|
|
))
|
|
|
|
|
|
(define tile-texture #f)
|
|
(define tile-atlas #f)
|
|
(define tile-index 0)
|
|
(define tile-map #f)
|
|
(define sprite-batch #f)
|
|
|
|
;; load the tile texture and split it into a tile atlas
|
|
(define (render-level-load)
|
|
(set! tile-texture (load-image (asset-file-name "assets/images/simples_pimples.png")
|
|
#:transparent-color black))
|
|
(set! tile-atlas (split-texture tile-texture 16 16))
|
|
(set! sprite-batch (make-sprite-batch tile-texture #:capacity 1200))
|
|
)
|
|
|
|
|
|
|
|
;; map tile symbols to tile indices in the tile atlas
|
|
(define (level-tile-index tile)
|
|
(case tile
|
|
((empty) 3800)
|
|
((brick) 3750)
|
|
((wall) 3709)
|
|
((ladder) 3350)
|
|
((goal) 3404)
|
|
((hero) 3800) ;; render empty tile for hero start location
|
|
((other) 3800) ;; render empty tile for enemy start location
|
|
;; render visual reminder of unknown tile
|
|
(else 3326)))
|
|
|
|
|
|
;; update the sprite-batch for the passed level
|
|
(define (render-level-set! level)
|
|
(sprite-batch-clear! sprite-batch)
|
|
(for-each
|
|
(lambda (row)
|
|
(for-each
|
|
(lambda (column)
|
|
(let*
|
|
((position (vec2 (* 16 column) (* 16 row)))
|
|
(tile (level-tile-at level position))
|
|
(texture-region (texture-atlas-ref tile-atlas (level-tile-index tile))))
|
|
(sprite-batch-add! sprite-batch position
|
|
#:texture-region texture-region)))
|
|
(iota (level-width level) 0)))
|
|
(iota (level-height level) 0)))
|
|
|
|
;; render the level tiles
|
|
(define (render-level-draw level)
|
|
(draw-sprite-batch sprite-batch))
|
|
|
|
|
|
(test-begin "tile translation")
|
|
|
|
(test-equal (level-tile-index 'empty) 3800)
|
|
(test-equal (level-tile-index 'brick) 3750)
|
|
(test-equal (level-tile-index 'wall) 3709)
|
|
(test-equal (level-tile-index 'ladder) 3350)
|
|
(test-equal (level-tile-index 'goal) 3404)
|
|
(test-equal (level-tile-index 'unknown) 3326)
|
|
|
|
(test-end "tile translation")
|