From fb036cda37c53473eb16afb6abbc8e9174e99c92 Mon Sep 17 00:00:00 2001
From: Martin Michelsen <fuzziqersoftware+g@gmail.com>
Date: Sun, 9 Nov 2025 16:01:10 -0800
Subject: [PATCH] fix null pointer dereference in episode 4 free play; closes
 #717

---
 src/ReceiveSubcommands.cc | 4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

diff --git a/src/ReceiveSubcommands.cc b/src/ReceiveSubcommands.cc
index 2d7e0768..40f0ff1c 100644
--- a/src/ReceiveSubcommands.cc
+++ b/src/ReceiveSubcommands.cc
@@ -3944,7 +3944,9 @@ static uint32_t base_exp_for_enemy_type(
     episode_order[1] = Episode::EP1;
     episode_order[2] = Episode::EP4;
   } else if (current_episode == Episode::EP4) {
-    uint8_t area = quest->meta.area_for_floor.at(floor);
+    uint8_t area = quest
+        ? quest->meta.area_for_floor.at(floor)
+        : SetDataTableBase::default_area_for_floor(Version::BB_V4, Episode::EP4, floor);
     if (area <= 0x28) { // Crater
       episode_order[1] = Episode::EP1;
       episode_order[2] = Episode::EP2;