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-rw-r--r--src/newgrf_cargo.h5
1 files changed, 5 insertions, 0 deletions
diff --git a/src/newgrf_cargo.h b/src/newgrf_cargo.h
index 2711d1352..e37d45ee0 100644
--- a/src/newgrf_cargo.h
+++ b/src/newgrf_cargo.h
@@ -21,4 +21,9 @@ static const CargoID CT_DEFAULT = NUM_CARGO + 0;
static const CargoID CT_PURCHASE = NUM_CARGO + 1;
static const CargoID CT_DEFAULT_NA = NUM_CARGO + 2;
+typedef struct CargoSpec;
+
+SpriteID GetCustomCargoSprite(const CargoSpec *cs);
+uint16 GetCargoCallback(uint16 callback, uint32 param1, uint32 param2, const CargoSpec *cs);
+
#endif /* NEWGRF_CARGO_H */