From 91fb3a1dd3302ea49292198d75ed1fad4f3a983a Mon Sep 17 00:00:00 2001
From: past-due <30942300+past-due@users.noreply.github.com>
Date: Thu, 24 Oct 2024 13:05:14 -0400
Subject: [PATCH] validateCampaignMod: Additional sanity check

---
 src/titleui/campaign.cpp | 10 ++++++++++
 1 file changed, 10 insertions(+)

diff --git a/src/titleui/campaign.cpp b/src/titleui/campaign.cpp
index c7133954240..b3820bbcb89 100644
--- a/src/titleui/campaign.cpp
+++ b/src/titleui/campaign.cpp
@@ -134,6 +134,16 @@ static bool validateCampaignMod(WzCampaignModInfo& modInfo, const std::string& b
 		}
 	}
 
+	// Verify alternate campaign has at least one campaign file listed
+	if (modInfo.type == WzModType::AlternateCampaign)
+	{
+		if (modInfo.campaignFiles.empty())
+		{
+			debug(LOG_ERROR, "Alternate campaign mod must list one or more valid campaign JSON files in \"campaigns\": %s", realModFilePathAndName.c_str());
+			return false;
+		}
+	}
+
 	return true;
 }