From cbe952efea026e677c878fc19dcffc5db3e3e2a3 Mon Sep 17 00:00:00 2001
From: spherallic <spherallic@gmail.com>
Date: Fri, 14 Jan 2022 17:16:36 +0100
Subject: [PATCH] Add toggle for action 439 to use backside textures.
---
extras/conf/SRB2-22.cfg | 1 +
src/p_spec.c | 6 +++++-
2 files changed, 6 insertions(+), 1 deletion(-)
diff --git a/extras/conf/SRB2-22.cfg b/extras/conf/SRB2-22.cfg
index b780ff75f0..7b325b6287 100644
--- a/extras/conf/SRB2-22.cfg
+++ b/extras/conf/SRB2-22.cfg
@@ -2417,6 +2417,7 @@ linedeftypes
prefix = "(439)";
flags8text = "[3] Set delay by backside sector";
flags64text = "[6] Only existing";
+ flags8192text = "[13] Use backside textures";
}
440
diff --git a/src/p_spec.c b/src/p_spec.c
index ebabe6a798..ade4339b9d 100644
--- a/src/p_spec.c
+++ b/src/p_spec.c
@@ -2093,7 +2093,7 @@ void P_SwitchWeather(INT32 weathernum)
{
case PRECIP_SNOW: // snow
curWeather = PRECIP_SNOW;
-
+
if (purge)
P_SpawnPrecipitation();
@@ -2997,6 +2997,7 @@ static void P_ProcessLineSpecial(line_t *line, mobj_t *mo, sector_t *callsec)
size_t linenum;
side_t *set = &sides[line->sidenum[0]], *this;
boolean always = !(line->flags & ML_NOCLIMB); // If noclimb: Only change mid texture if mid texture already exists on tagged lines, etc.
+ boolean backside = line->flags & ML_EFFECT6 && line->sidenum[1] != 0xffff; // If Effect 6 is set, use backside textures if provided
for (linenum = 0; linenum < numlines; linenum++)
{
@@ -3015,6 +3016,9 @@ static void P_ProcessLineSpecial(line_t *line, mobj_t *mo, sector_t *callsec)
if (lines[linenum].sidenum[1] == 0xffff)
continue; // One-sided stops here.
+ if (backside)
+ set = &sides[line->sidenum[1]];
+
// Back side
this = &sides[lines[linenum].sidenum[1]];
if (always || this->toptexture) this->toptexture = set->toptexture;
--
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