lib/gamnit: intro `GamnitDisplay::aspect_ratio`

Signed-off-by: Alexis Laferrière <alexis.laf@xymus.net>

diff --git a/lib/gamnit/display.nit b/lib/gamnit/display.nit
index 94ece8a..97d82b5 100644 (file)
--- a/lib/gamnit/display.nit
+++ b/lib/gamnit/display.nit
@@ -32,6 +32,9 @@ class GamnitDisplay
        # Height of the display, in pixels
        fun height: Int is abstract
 
+       # Aspect ratio of the screen, `width / height`
+       var aspect_ratio: Float is lazy do return width.to_f / height.to_f
+
        # Prepare this display
        #
        # The implementation varies per platform.