From 8ab9960ca08caaee4b26d7fc290a5dab6e295296 Mon Sep 17 00:00:00 2001
From: Eric Wasylishen <ewasylishen@gmail.com>
Date: Sun, 24 Dec 2023 17:22:01 -0700
Subject: [PATCH] lightpreview: don't crash when vis is run more than once

---
 include/vis/vis.hh |  1 +
 vis/vis.cc         | 32 +++++++++++++++++++++++++++++++-
 2 files changed, 32 insertions(+), 1 deletion(-)

diff --git a/include/vis/vis.hh b/include/vis/vis.hh
index b3ed0603..84e444cf 100644
--- a/include/vis/vis.hh
+++ b/include/vis/vis.hh
@@ -297,5 +297,6 @@ public:
 
 extern settings::vis_settings vis_options;
 
+void vis_reset();
 int vis_main(int argc, const char **argv);
 int vis_main(const std::vector<std::string> &args);
diff --git a/vis/vis.cc b/vis/vis.cc
index b0e3e42e..ea06594a 100644
--- a/vis/vis.cc
+++ b/vis/vis.cc
@@ -677,9 +677,39 @@ static void LoadPortals(const fs::path &name, mbsp_t *bsp)
 
 void vis_reset()
 {
-    // FIXME: clear other data
+    numportals = 0;
+    portalleafs = 0;
+    portalleafs_real = 0;
+
+    portals.clear();
+    leafs.clear();
+
+    vismap.clear();
+
+    originalvismapsize = 0;
+
+    uncompressed.clear();
+
+    leafbytes = 0;
+    leaflongs = 0;
+    leafbytes_real = 0;
 
     vis_options.reset();
+
+    portalfile = fs::path();
+    statefile = fs::path();
+    statetmpfile = fs::path();
+
+    portalIndex = 0;
+
+    starttime = time_point();
+    endtime = time_point();
+    statetime = time_point();
+
+    stateinterval = duration();
+
+    totalvis = 0;
+    compressed.clear();
 }
 
 int vis_main(int argc, const char **argv)