From 3692ef68b9983681f88a81cc79aac34f0461305c Mon Sep 17 00:00:00 2001
From: Zeno Rogue <zeno@attnam.com>
Date: Mon, 1 May 2023 16:10:25 +0200
Subject: [PATCH] placeSidewalls now set PPR::TRANSPARENT_WALL priority for
 walls with alpha

---
 graph.cpp | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/graph.cpp b/graph.cpp
index cd189c73..c2ea6b60 100644
--- a/graph.cpp
+++ b/graph.cpp
@@ -3754,6 +3754,8 @@ EX bool placeSidewall(cell *c, int i, int sidepar, const shiftmatrix& V, color_t
   else if(sidepar == SIDE_ASHA) prio = PPR::ASHALLOW;
   else if(sidepar == SIDE_BSHA) prio = PPR::BSHALLOW;
   else prio = PPR::REDWALL-2+4*(sidepar-SIDE_SLEV);
+
+  if((col & 255) < 255) prio = PPR::TRANSPARENT_WALL;
   
   if(cgi.emb->is_in_noniso()) {
     draw_shapevec(c, V, qfi.fshape->gpside[sidepar][i], col, prio);