From d46ceafd35b204430b05327c31cb4dabda3bfb62 Mon Sep 17 00:00:00 2001
From: Christoph Oelckers <c.oelckers@users.noreply.github.com>
Date: Thu, 8 Dec 2016 19:07:10 +0100
Subject: [PATCH] - fixed: A_Face* had the sign for the pitch inverted (In
 Doom, negative pitch is upward, this had positive pitch upward.)

---
 src/p_enemy.cpp | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/src/p_enemy.cpp b/src/p_enemy.cpp
index da4e3cc45..4b99a5f52 100644
--- a/src/p_enemy.cpp
+++ b/src/p_enemy.cpp
@@ -3061,7 +3061,7 @@ void A_Face(AActor *self, AActor *other, DAngle max_turn, DAngle max_pitch, DAng
 		double dist_z = target_z - source_z;
 		double ddist = g_sqrt(dist.X*dist.X + dist.Y*dist.Y + dist_z*dist_z);
 
-		DAngle other_pitch = DAngle::ToDegrees(g_asin(dist_z / ddist)).Normalized180();
+		DAngle other_pitch = -DAngle::ToDegrees(g_asin(dist_z / ddist)).Normalized180();
 		
 		if (max_pitch != 0)
 		{