(svn r22452) -Fix (r18708): Zero register 0x100 as specified before resolving custom station foundations.

1 files changed, 11 insertions, 0 deletions

diff --git a/src/newgrf_spritegroup.h b/src/newgrf_spritegroup.h
index da4d5e5df..2541195d9 100644
--- a/src/newgrf_spritegroup.h
+++ b/src/newgrf_spritegroup.h
@@ -35,6 +35,17 @@ static inline uint32 GetRegister(uint i)
 	return _temp_store.Get(i);
 }
 
+/**
+ * Clears the value of a so-called newgrf "register".
+ * @param i index of the register
+ * @pre i < 0x110
+ */
+static inline void ClearRegister(uint i)
+{
+	extern TemporaryStorageArray<int32, 0x110> _temp_store;
+	_temp_store.Store(i, 0);
+}
+
 /* List of different sprite group types */
 enum SpriteGroupType {
 	SGT_REAL,