diff --git a/source/games/blood/src/aipod.cpp b/source/games/blood/src/aipod.cpp
index a393fe371..2dfbcfbe0 100644
--- a/source/games/blood/src/aipod.cpp
+++ b/source/games/blood/src/aipod.cpp
@@ -182,9 +182,9 @@ static void aiPodChase(DBloodActor* actor)
 	auto target = actor->GetTarget();
 
 	auto dvec = target->spr.pos.XY() - actor->spr.pos.XY();
-	int nAngle = getangle(dvec);
-	int nDist = approxDist(dvec);
-	aiChooseDirection(actor, DAngle::fromBuild(nAngle));
+	DAngle nAngle = VecToAngle(dvec);
+	double nDist = dvec.Length();
+	aiChooseDirection(actor, nAngle);
 	if (target->xspr.health == 0) {
 
 		switch (actor->spr.type) {
@@ -199,16 +199,16 @@ static void aiPodChase(DBloodActor* actor)
 		}
 		return;
 	}
-	if (nDist <= pDudeInfo->seeDist)
+	if (nDist <= pDudeInfo->SeeDist())
 	{
-		int nDeltaAngle = getincangle(actor->int_ang(), nAngle);
+		DAngle nDeltaAngle = absangle(actor->spr.angle, nAngle);
 		double height = (pDudeInfo->eyeHeight * actor->spr.yrepeat) * REPEAT_SCALE;
 		if (cansee(target->spr.pos, target->sector(), actor->spr.pos.plusZ(-height), actor->sector()))
 		{
-			if (nDist < pDudeInfo->seeDist && abs(nDeltaAngle) <= pDudeInfo->periphery)
+			if (nDist < pDudeInfo->SeeDist() && abs(nDeltaAngle) <= pDudeInfo->Periphery())
 			{
 				aiSetTarget(actor, actor->GetTarget());
-				if (abs(nDeltaAngle) < 85 && target->spr.type != kDudePodGreen && target->spr.type != kDudePodFire) {
+				if (nDeltaAngle < DAngle15 && target->spr.type != kDudePodGreen && target->spr.type != kDudePodFire) {
 					switch (actor->spr.type) {
 					case kDudePodGreen:
 					case kDudePodFire: