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-rw-r--r--src/newgrf_railtype.h1
1 files changed, 1 insertions, 0 deletions
diff --git a/src/newgrf_railtype.h b/src/newgrf_railtype.h
index 0c57f7e49..5b3baf0f3 100644
--- a/src/newgrf_railtype.h
+++ b/src/newgrf_railtype.h
@@ -16,6 +16,7 @@
#include "newgrf_commons.h"
SpriteID GetCustomRailSprite(const RailtypeInfo *rti, TileIndex tile, RailTypeSpriteGroup rtsg, TileContext context = TCX_NORMAL);
+SpriteID GetCustomSignalSprite(const RailtypeInfo *rti, TileIndex tile, SignalType type, SignalVariant var, SignalState state, bool gui = false);
uint8 GetReverseRailTypeTranslation(RailType railtype, const GRFFile *grffile);