From 47d2fd403c7d96ade90225fd3dbb56a848f0357b Mon Sep 17 00:00:00 2001
From: Christoph Oelckers <c.oelckers@zdoom.fake>
Date: Sun, 14 Aug 2016 21:55:20 +0200
Subject: [PATCH] - fixed typos in scroll code.

---
 src/p_scroll.cpp | 10 +++++++---
 1 file changed, 7 insertions(+), 3 deletions(-)

diff --git a/src/p_scroll.cpp b/src/p_scroll.cpp
index b7ed4fc65..d0a8f4769 100644
--- a/src/p_scroll.cpp
+++ b/src/p_scroll.cpp
@@ -147,8 +147,8 @@ static void RotationComp(const sector_t *sec, int which, double dx, double dy, d
 	}
 	else
 	{
-		double ca = an.Cos();
-		double sa = an.Sin();
+		double ca = -an.Cos();
+		double sa = -an.Sin();
 		tdx = dx*ca - dy*sa;
 		tdy = dy*ca + dx*sa;
 	}
@@ -345,12 +345,16 @@ DScroller::DScroller (double dx, double dy, const line_t *l,
 					 int control, int accel, EScrollPos scrollpos)
 	: DThinker (STAT_SCROLLER)
 {
+	if (tagManager.GetFirstLineID(l) == 300)
+	{
+		int a = 0;
+	}
 	double x = fabs(l->Delta().X), y = fabs(l->Delta().Y), d;
 	if (y > x) d = x, x = y, y = d;
 
 	d = x / g_sin(g_atan2(y, x) + M_PI / 2);
 	x = (-dy * l->Delta().Y + dx * l->Delta().X) / d;
-	y = (-dx * l->Delta().Y - dy * l->Delta().Y) / d;
+	y = (-dx * l->Delta().Y - dy * l->Delta().X) / d;
 
 	m_Type = EScroll::sc_side;
 	m_dx = x;