diff --git a/src/landscape.h b/src/landscape.h
--- a/src/landscape.h
+++ b/src/landscape.h
@@ -108,6 +108,7 @@ static inline Point RemapCoords2(int x, 
  * @param y Y coordinate of the 2D coordinate.
  * @return X and Y components of equivalent world or tile coordinate.
  * @note Inverse of #RemapCoords function. Smaller values may get rounded.
+ * @see InverseRemapCoords2
  */
 static inline Point InverseRemapCoords(int x, int y)
 {
@@ -115,6 +116,8 @@ static inline Point InverseRemapCoords(i
 	return pt;
 }
 
+Point InverseRemapCoords2(int x, int y, bool clamp_to_map = false);
+
 uint ApplyFoundationToSlope(Foundation f, Slope *s);
 /**
  * Applies a foundation to a slope.