Add buffer module.

* chickadee/buffer.scm: New file.
* Makefile.am (SOURCES): Add it.
* .dir-locals.el: Add indent rules for with-buffer and
with-current-buffer.
* examples/buffer.scm: New file.
* doc/api.texi (Buffers): Add docs.

1 files changed, 33 insertions, 0 deletions

diff --git a/examples/buffer.scm b/examples/buffer.scm
new file mode 100644
index 0000000..4712ea4
--- /dev/null
+++ b/examples/buffer.scm
@@ -0,0 +1,33 @@
+(use-modules (chickadee)
+             (chickadee buffer)
+             (chickadee math vector)
+             (chickadee render font)
+             (chickadee render sprite)
+             (chickadee render texture)
+             (chickadee scripting)
+             (oop goops))
+
+(define-class <splash-screen> (<buffer>)
+  (chickadee #:accessor chickadee #:init-value #f))
+
+(define-method (start (splash <splash-screen>))
+  (set! (chickadee splash) (load-image "images/chickadee.png"))
+  (after 120 (replace-buffer! (make <main-menu>))))
+
+(define-method (draw (splash <splash-screen>) alpha)
+  (draw-sprite (chickadee splash) (vec2 256.0 176.0)))
+
+(define-class <main-menu> (<buffer>)
+  (font #:accessor menu-font #:init-value #f))
+
+(define-method (start (menu <main-menu>))
+  (set! (menu-font menu) (load-font "fonts/good_neighbors_starling.xml")))
+
+(define-method (draw (menu <main-menu>) alpha)
+  (draw-text (menu-font menu) "press any key to exit" (vec2 200.0 240.0)))
+
+(define-method (key-press (menu <main-menu>) key scancode modifiers repeat?)
+  (pop-buffer!))
+
+(use-buffers! (make <splash-screen>))
+(run-game)