From 3c9a1ffe5e5bb3c825e18e999ab913f29a0a571e Mon Sep 17 00:00:00 2001
From: Shiny Metagross <30511800+ShinyMetagross@users.noreply.github.com>
Date: Mon, 15 Aug 2022 16:53:28 -0700
Subject: [PATCH] Give a fatal error when no mesh data is loaded

- Part of having mesh data in an IQM includes joints. If a model doesn't have any mesh data to it, it won't have joints, and those are necessary. Poses are a different story however.
---
 src/common/models/models_iqm.cpp | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/src/common/models/models_iqm.cpp b/src/common/models/models_iqm.cpp
index d468855ed..70efae4f9 100644
--- a/src/common/models/models_iqm.cpp
+++ b/src/common/models/models_iqm.cpp
@@ -59,6 +59,9 @@ bool IQMModel::Load(const char* path, int lumpnum, const char* buffer, int lengt
 		uint32_t num_extensions = reader.ReadUInt32();
 		uint32_t ofs_extensions = reader.ReadUInt32();
 
+		if (num_meshes <= 0)
+			I_FatalError("Invalid model: \"%s%s\", no mesh data is unsupported", path, fileSystem.GetLongName(mLumpNum));
+
 		if (num_text == 0)
 			return false;