From ed5287ef2346b1be0a84bbe81002b27aeb3c6d30 Mon Sep 17 00:00:00 2001
From: Christoph Oelckers <coelckers@users.noreply.github.com>
Date: Fri, 26 Aug 2022 18:02:39 +0200
Subject: [PATCH] - added Q16 and Build angle converters to TAngle

To have full coverage. Q16 is what ACS uses and Build angles are needed in Raze.
---
 src/common/utility/vectors.h | 20 ++++++++++++++++++++
 src/playsim/p_acs.cpp        |  6 +++---
 2 files changed, 23 insertions(+), 3 deletions(-)

diff --git a/src/common/utility/vectors.h b/src/common/utility/vectors.h
index dce0f301e..e55307811 100644
--- a/src/common/utility/vectors.h
+++ b/src/common/utility/vectors.h
@@ -1208,6 +1208,16 @@ public:
 		return TAngle(f * (90. / 0x40000000));
 	}
 
+	static constexpr TAngle fromBuild(int bang)
+	{
+		return TAngle(bang * (90. / 512));
+	}
+
+	static constexpr TAngle fromQ16(int bang)
+	{
+		return TAngle(bang * (90. / 16384));
+	}
+
 	TAngle(const TAngle &other) = default;
 	TAngle &operator= (const TAngle &other) = default;
 
@@ -1320,6 +1330,16 @@ public:
 		return Degrees_;
 	}
 
+	constexpr int Buildang() const
+	{
+		return int(Degrees_ * (512 / 90.0));
+	}
+
+	constexpr int Q16() const
+	{
+		return int(Degrees_ * (16384 / 90.0));
+	}
+
 	TVector2<vec_t> ToVector(vec_t length = 1) const
 	{
 		return TVector2<vec_t>(length * Cos(), length * Sin());
diff --git a/src/playsim/p_acs.cpp b/src/playsim/p_acs.cpp
index 67e5be4d8..c50e0d2a7 100644
--- a/src/playsim/p_acs.cpp
+++ b/src/playsim/p_acs.cpp
@@ -615,17 +615,17 @@ inline int DoubleToACS(double val)
 
 inline DAngle ACSToAngle(int acsval)
 {
-	return DAngle::fromDeg(acsval * (360. / 65536.));
+	return DAngle::fromQ16(acsval);
 }
 
 inline int AngleToACS(DAngle ang)
 {
-	return ang.BAMs() >> 16;
+	return ang.Q16();
 }
 
 inline int PitchToACS(DAngle ang)
 {
-	return int(ang.Normalized180().Degrees() * (65536. / 360));
+	return ang.Normalized180().Q16();
 }
 
 struct CallReturn