Add example that shows off multiple scenes.

1 files changed, 55 insertions, 0 deletions

diff --git a/examples/scenes.scm b/examples/scenes.scm
new file mode 100644
index 0000000..a5d65e7
--- /dev/null
+++ b/examples/scenes.scm
@@ -0,0 +1,55 @@
+(use-modules (2d sprite)
+             (2d game)
+             (2d vector2))
+
+;;;
+;;; Scene 1
+;;;
+
+(define (make-sprite-1)
+  (load-sprite "images/sprite.png"
+               #:position (vector2 320 240)))
+
+(define (scene-1-key-press sprite key mod unicode)
+  (when (eq? key 'return)
+    (replace-scene (scene-2))))
+
+(define-scene scene-1
+  #:title  "Scene 1"
+  #:draw   (lambda (sprite) (draw-sprite sprite))
+  #:events (append
+            (default-scene-events)
+            `((start    . ,(lambda (state) (display "Start Scene 1\n")))
+              (stop     . ,(lambda (state) (display "Stop Scene 1\n")))
+              (key-down . ,(lambda (state key mod unicode)
+                             (scene-1-key-press state key mod unicode)))))
+  #:state  (make-sprite-1))
+
+;;;
+;;; Scene 2
+;;;
+
+(define (make-sprite-2)
+  (load-sprite "images/stars.png"
+               #:position (vector2 320 240)))
+
+(define (scene-2-key-press sprite key mod unicode)
+  (when (eq? key 'return)
+    (replace-scene (scene-1))))
+
+(define-scene scene-2
+  #:title  "Scene 2"
+  #:draw   (lambda (sprite) (draw-sprite sprite))
+  #:events (append
+            (default-scene-events)
+            `((start    . ,(lambda (state) (display "Start Scene 2\n")))
+              (stop     . ,(lambda (state) (display "Stop Scene 2\n")))
+              (key-down . ,(lambda (state key mod unicode)
+                             (scene-2-key-press state key mod unicode)))))
+  #:state  (make-sprite-2))
+
+(define-game scenes
+  #:title       "Scenes"
+  #:first-scene scene-1)
+
+(run-game scenes)