(svn r21841) -Feature: [NewGRF] Allow to define other railtypes that should be introduced if a particular rail type is introduced, e.g. to make sure slow rail is introduced when fast rail gets introduced

1 files changed, 5 insertions, 0 deletions

diff --git a/src/rail.h b/src/rail.h
index 465a4aac3..81bac120c 100644
--- a/src/rail.h
+++ b/src/rail.h
@@ -217,6 +217,11 @@ struct RailtypeInfo {
 	byte map_colour;
 
 	/**
+	 * Bitmask of which other railtypes are introduced when this railtype is introduced.
+	 */
+	RailTypes introduces_railtypes;
+
+	/**
 	 * Sprite groups for resolving sprites
 	 */
 	const SpriteGroup *group[RTSG_END];