From 6deb185b46bde9e084429b02510fecf1ebc5fa54 Mon Sep 17 00:00:00 2001
From: Christoph Oelckers <c.oelckers@zdoom.fake>
Date: Sun, 14 Aug 2016 22:10:44 +0200
Subject: [PATCH] - fixed another typo in scroller code.

Now Scroll_Texture_Model is working properly again. (Note: Whoever designed this function must have been on drugs - its use of the source data in Boom is completely insane.)
---
 src/p_scroll.cpp | 8 ++------
 1 file changed, 2 insertions(+), 6 deletions(-)

diff --git a/src/p_scroll.cpp b/src/p_scroll.cpp
index d0a8f4769..52be13d56 100644
--- a/src/p_scroll.cpp
+++ b/src/p_scroll.cpp
@@ -345,16 +345,12 @@ 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().X) / d;
+	x = -(dy * l->Delta().Y + dx * l->Delta().X) / d;
+	y = -(dx * l->Delta().Y - dy * l->Delta().X) / d;
 
 	m_Type = EScroll::sc_side;
 	m_dx = x;