diff --git a/source/games/blood/src/aibat.cpp b/source/games/blood/src/aibat.cpp
index c22904097..42e72b5c4 100644
--- a/source/games/blood/src/aibat.cpp
+++ b/source/games/blood/src/aibat.cpp
@@ -139,7 +139,7 @@ static void batThinkGoto(DBloodActor* actor)
 	auto nAngle = VecToAngle(dvec);
 	int nDist = approxDist(dvec);
 	aiChooseDirection(actor, nAngle);
-	if (nDist < 512 && absangle(actor->spr.angle, nAngle) < mapangle(pDudeInfo->periphery))
+	if (nDist < 512 && absangle(actor->spr.angle, nAngle) < pDudeInfo->Periphery())
 		aiNewState(actor, &batSearch);
 	batThinkTarget(actor);
 }
diff --git a/source/games/blood/src/aibeast.cpp b/source/games/blood/src/aibeast.cpp
index 8952178f9..442f7220f 100644
--- a/source/games/blood/src/aibeast.cpp
+++ b/source/games/blood/src/aibeast.cpp
@@ -178,7 +178,7 @@ static void beastThinkGoto(DBloodActor* actor)
 	auto nAngle = VecToAngle(dvec);
 	int nDist = approxDist(dvec);
 	aiChooseDirection(actor, nAngle);
-	if (nDist < 512 && absangle(actor->spr.angle, nAngle) < mapangle(pDudeInfo->periphery))
+	if (nDist < 512 && absangle(actor->spr.angle, nAngle) < pDudeInfo->Periphery())
 	{
 		if (pXSector && pXSector->Underwater)
 			aiNewState(actor, &beastSwimSearch);
@@ -328,7 +328,7 @@ static void beastThinkSwimGoto(DBloodActor* actor)
 	auto nAngle = VecToAngle(dvec);
 	int nDist = approxDist(dvec);
 	aiChooseDirection(actor, nAngle);
-	if (nDist < 512 && absangle(actor->spr.angle, nAngle) < mapangle(pDudeInfo->periphery))
+	if (nDist < 512 && absangle(actor->spr.angle, nAngle) < pDudeInfo->Periphery())
 		aiNewState(actor, &beastSwimSearch);
 	aiThinkTarget(actor);
 }
diff --git a/source/games/blood/src/aiboneel.cpp b/source/games/blood/src/aiboneel.cpp
index f2bc94288..3472c7081 100644
--- a/source/games/blood/src/aiboneel.cpp
+++ b/source/games/blood/src/aiboneel.cpp
@@ -152,7 +152,7 @@ static void eelThinkGoto(DBloodActor* actor)
 	auto nAngle = VecToAngle(dvec);
 	int nDist = approxDist(dvec);
 	aiChooseDirection(actor, nAngle);
-	if (nDist < 512 && absangle(actor->spr.angle, nAngle) < mapangle(pDudeInfo->periphery))
+	if (nDist < 512 && absangle(actor->spr.angle, nAngle) < pDudeInfo->Periphery())
 		aiNewState(actor, &eelSearch);
 	eelThinkTarget(actor);
 }
diff --git a/source/games/blood/src/dude.h b/source/games/blood/src/dude.h
index 41a129c95..139fc17aa 100644
--- a/source/games/blood/src/dude.h
+++ b/source/games/blood/src/dude.h
@@ -52,6 +52,22 @@ struct DUDEINFO {
 	int damageVal[7]; // real damage? Hmm?
 	int at8c; // unused ?
 	int at90; // unused ?
+
+	// converters to floating point format
+	inline double Heardist() const
+	{
+		return hearDist * maptoworld;
+	}
+
+	inline double SeeDist() const
+	{
+		return seeDist * maptoworld;
+	}
+
+	inline DAngle Periphery() const
+	{
+		return mapangle(periphery);
+	}
 };
 
 extern DUDEINFO dudeInfo[kDudeMax - kDudeBase];