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authorDavid Thompson <dthompson@member.fsf.org>2013-07-06 17:57:41 -0400
committerDavid Thompson <dthompson@member.fsf.org>2013-07-06 17:57:41 -0400
commitfcb5ed27346ceef1e94acbdb53e1b78e0b42f2de (patch)
tree7fcc3a5d841a64d625d754474be7696184f534e4 /examples
parent3930b9af6969043c1a976fc256d2c1261395f856 (diff)
Add tile map example.
Diffstat (limited to 'examples')
-rw-r--r--examples/tilemap.scm106
1 files changed, 106 insertions, 0 deletions
diff --git a/examples/tilemap.scm b/examples/tilemap.scm
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+(use-modules (figl gl)
+ (srfi srfi-1)
+ (srfi srfi-9)
+ (srfi srfi-42)
+ (ice-9 format)
+ (2d sprite)
+ (2d game-loop)
+ (2d window)
+ (2d vector)
+ (2d input)
+ (2d helpers))
+
+;;;
+;;; 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
+ (let ((batch (make-sprite-batch)))
+ (lambda (layer)
+ (with-sprite-batch batch
+ (do-ec (: y (map-layer-height layer))
+ (: x (map-layer-width layer))
+ (let ((tile (array-ref (map-layer-tiles layer) y x)))
+ (sprite-batch-draw batch
+ (texture-region-texture tile)
+ (* x (map-layer-tile-width layer))
+ (* y (map-layer-tile-height layer))
+ 0
+ 0
+ (texture-region-width tile)
+ (texture-region-height tile)
+ 1
+ 1
+ 0
+ (texture-region-u tile)
+ (texture-region-v tile)
+ (texture-region-u2 tile)
+ (texture-region-v2 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 map #f)
+
+(define (tiles->texture-regions width height tileset tiles)
+ (list->array
+ 2
+ (list-ec
+ (: y height)
+ (list-ec
+ (: x width)
+ (vector-ref tileset (array-ref tiles y x))))))
+
+(define (key-down key mod unicode)
+ (cond ((any-equal? key (keycode escape) (keycode q))
+ (close-window)
+ (quit))))
+
+(define (render)
+ (with-gl-push-matrix
+ (gl-translate 100 100 0)
+ (draw-map-layer map)))
+
+(define window-width 800)
+(define window-height 600)
+
+(set-key-down-callback (lambda (key mod unicode) (key-down key mod unicode)))
+(set-render-callback (lambda () (render)))
+(open-window window-width window-height)
+
+;; Load tileset and build map layer
+(let* ((texture (load-texture "images/tiles.png"))
+ (tileset (split-texture texture 32 32)))
+ (set! map (make-map-layer map-width map-height tile-width tile-height
+ (tiles->texture-regions map-width
+ map-height
+ tileset
+ map-tiles))))
+
+(run-game-loop)