From: Alexis Laferrière <alexis.laf@xymus.net>
Date: Fri, 14 Jul 2017 16:21:17 +0000 (-0400)
Subject: gamnit: fix animations with a single frame
X-Git-Url: http://nitlanguage.org

gamnit: fix animations with a single frame

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

diff --git a/lib/gamnit/flat/flat_core.nit b/lib/gamnit/flat/flat_core.nit
index 6cd0411..800b3de 100644
--- a/lib/gamnit/flat/flat_core.nit
+++ b/lib/gamnit/flat/flat_core.nit
@@ -1211,8 +1211,12 @@ private class SpriteContext
 				data[o+36] = tc[v*2+1]
 
 				# a_tex_diff
-				var dx = animation.frames[1].texture_coords[0] - animation.frames[0].texture_coords[0]
-				var dy = animation.frames[1].texture_coords[1] - animation.frames[0].texture_coords[1]
+				var dx = 0.0
+				var dy = 0.0
+				if animation.frames.length > 1 then
+					dx = animation.frames[1].texture_coords[0] - animation.frames[0].texture_coords[0]
+					dy = animation.frames[1].texture_coords[1] - animation.frames[0].texture_coords[1]
+				end
 				data[o+37] = dx
 				data[o+38] = dy