X-Git-Url: http://nitlanguage.org

diff --git a/contrib/tinks/src/game/world.nit b/contrib/tinks/src/game/world.nit
index a9e1844..9ba1d8b 100644
--- a/contrib/tinks/src/game/world.nit
+++ b/contrib/tinks/src/game/world.nit
@@ -211,6 +211,9 @@ class FeatureChangeEvent
 	# New `Feature`, if any
 	var feature: nullable Feature
 
+	# Previous feature, if any
+	var old_feature: nullable Feature
+
 	# `Pos` of this change
 	var pos: Pos