add set/get plane reflectivity

src/gamedata/r_defs.h

@@ -40,6 +40,7 @@
 #include "r_sky.h"
 #include "p_terrain.h"
 #include "p_effect.h"
+#include "vm.h"
 
 #include "hwrenderer/data/buffers.h"
 
@@ -1029,6 +1030,18 @@ struct sector_t
 		return pos == floor? floorplane:ceilingplane;
 	}
 
+	void SetPlaneReflectivity(int pos, double val)
+	{
+		if (pos < 0 || pos > 1) ThrowAbortException(X_ARRAY_OUT_OF_BOUNDS, "pos must be either 0 or 1");
+		reflect[pos] = val;
+	}
+
+	double GetPlaneReflectivity(int pos)
+	{
+		if (pos < 0 || pos > 1) ThrowAbortException(X_ARRAY_OUT_OF_BOUNDS, "pos must be either 0 or 1");
+		return reflect[pos];
+	}
+
 	bool isSecret() const
 	{
 		return !!(Flags & SECF_SECRET);

src/scripting/vmthunks.cpp

@@ -869,6 +869,32 @@ DEFINE_ACTION_FUNCTION_NATIVE(_Sector, SetXOffset, SetXOffset)
 	 ACTION_RETURN_INT(self->GetLightLevel());
  }
 
+ static void SetPlaneReflectivity(sector_t* self, int pos, double val)
+ {
+	 self->SetPlaneReflectivity(pos, val);
+ }
+
+ DEFINE_ACTION_FUNCTION_NATIVE(_Sector, SetPlaneReflectivity, SetPlaneReflectivity)
+ {
+	 PARAM_SELF_STRUCT_PROLOGUE(sector_t);
+	 PARAM_INT(pos);
+	 PARAM_FLOAT(val)
+	 self->SetPlaneReflectivity(pos, val);
+	 return 0;
+ }
+
+ static double GetPlaneReflectivity(sector_t* self, int pos)
+ {
+	 return self->GetPlaneReflectivity(pos);
+ }
+
+ DEFINE_ACTION_FUNCTION_NATIVE(_Sector, GetPlaneReflectivity, GetPlaneReflectivity)
+ {
+	 PARAM_SELF_STRUCT_PROLOGUE(sector_t);
+	 PARAM_INT(pos);
+	 ACTION_RETURN_FLOAT(self->GetPlaneReflectivity(pos));
+ }
+
  static int PortalBlocksView(sector_t *self, int pos)
  {
 	 return self->PortalBlocksView(pos);

wadsrc/static/zscript/mapdata.zs

@@ -553,6 +553,8 @@ struct Sector native play
 	native void ChangeLightLevel(int newval);
 	native void SetLightLevel(int newval);
 	native clearscope int GetLightLevel() const;
+	native void SetPlaneReflectivity(int pos, double val);
+	native clearscope double GetPlaneReflectivity(int pos);
 	native void AdjustFloorClip();
 	native clearscope bool IsLinked(Sector other, bool ceiling) const;