From 300eceb005d5a3a690a9ba597238cc31511b7197 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Miloslav=20=C4=8C=C3=AD=C5=BE?= <tastyfish@seznam.cz>
Date: Tue, 25 Sep 2018 08:06:49 +0200
Subject: [PATCH] Fix door roll

---
 raycastlib.h | 6 ++++--
 1 file changed, 4 insertions(+), 2 deletions(-)

diff --git a/raycastlib.h b/raycastlib.h
index 1844adf..022cef0 100644
--- a/raycastlib.h
+++ b/raycastlib.h
@@ -1400,9 +1400,11 @@ void _RCL_columnFunctionSimple(RCL_HitResult *hits, uint16_t hitCount,
       {
         // normal hit, check the door roll
 
+        RCL_Unit texCoordMod = hit.textureCoord % RCL_UNITS_PER_SQUARE;
+
         int8_t unrolled = hit.doorRoll >= 0 ?
-          hit.doorRoll > hit.textureCoord :
-          hit.textureCoord > RCL_UNITS_PER_SQUARE + hit.doorRoll;
+          hit.doorRoll > texCoordMod :
+          texCoordMod > RCL_UNITS_PER_SQUARE + hit.doorRoll;
 
         if (unrolled)
         {