From ca805016c815583d2d2e31905277e984e4fb92a8 Mon Sep 17 00:00:00 2001
From: Christoph Oelckers <coelckers@users.noreply.github.com>
Date: Sun, 18 Aug 2019 15:04:34 +0200
Subject: [PATCH] - fixed bad default alpha for 3D floors.

This is a byte value, therefore the default must be 255, not 65536.
---
 src/playsim/p_3dfloors.cpp | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/src/playsim/p_3dfloors.cpp b/src/playsim/p_3dfloors.cpp
index 9ef599a69..31fcb2f91 100644
--- a/src/playsim/p_3dfloors.cpp
+++ b/src/playsim/p_3dfloors.cpp
@@ -173,13 +173,13 @@ void P_Add3DFloor(sector_t* sec, sector_t* sec2, line_t* master, int flags, int
 
 	ffloor->flags  = flags;
 	ffloor->master = master;
-	ffloor->alpha  = alpha;
+	ffloor->alpha  = clamp(alpha, 0, 255);
 	ffloor->top.vindex = ffloor->bottom.vindex = -1;
 
 	// The engine cannot handle sloped translucent floors. Sorry
 	if (ffloor->top.plane->isSlope() || ffloor->bottom.plane->isSlope())
 	{
-		ffloor->alpha = OPAQUE;
+		ffloor->alpha = 255;
 		ffloor->flags &= ~FF_ADDITIVETRANS;
 	}