From 7d3c273594f1081a93e567d24de7223d6bf22a6a Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?=CE=B6eh=20Matt?= <5415177+ZehMatt@users.noreply.github.com>
Date: Fri, 12 Jan 2024 17:51:41 +0200
Subject: [PATCH] Fix #21171: Crash creating entities with no slots available

---
 src/openrct2/scripting/bindings/world/ScMap.cpp | 5 +++++
 1 file changed, 5 insertions(+)

diff --git a/src/openrct2/scripting/bindings/world/ScMap.cpp b/src/openrct2/scripting/bindings/world/ScMap.cpp
index b15d53de51..84ac899274 100644
--- a/src/openrct2/scripting/bindings/world/ScMap.cpp
+++ b/src/openrct2/scripting/bindings/world/ScMap.cpp
@@ -233,6 +233,11 @@ namespace OpenRCT2::Scripting
     DukValue createEntityType(duk_context* ctx, const DukValue& initializer)
     {
         TEntityType* entity = CreateEntity<TEntityType>();
+        if (entity == nullptr)
+        {
+            // Probably no more space for entities for this specified entity type.
+            return ToDuk(ctx, undefined);
+        }
 
         auto entityPos = CoordsXYZ{ AsOrDefault(initializer["x"], 0), AsOrDefault(initializer["y"], 0),
                                     AsOrDefault(initializer["z"], 0) };