diff --git a/src/p_setup.h b/src/p_setup.h
index da38d4c08b152f87fab59517706c3ccbc7544339..fcc0409d2d4354d3c87a984da43d3bab2aa7fbff 100644
--- a/src/p_setup.h
+++ b/src/p_setup.h
@@ -89,4 +89,10 @@ UINT32 P_GetScoreForGrade(INT16 map, UINT8 mare, UINT8 grade);
 UINT32 P_GetScoreForGradeOverall(INT16 map, UINT8 grade);
 void P_AddNiGHTSTimes(INT16 i, char *gtext);
 
+// rr
+void P_UpdateSegLightOffset(seg_t *li);
+boolean P_ApplyLightOffset(UINT8 baselightnum, const sector_t *sector);
+boolean P_ApplyLightOffsetFine(UINT8 baselightlevel, const sector_t *sector);
+boolean P_SectorUsesDirectionalLighting(const sector_t *sector);
+
 #endif