From e16fcb286a538edbc5ef66c72024277b15cf9d76 Mon Sep 17 00:00:00 2001
From: aeonofdiscord <alex@aeonofdiscord.com>
Date: Wed, 19 Apr 2023 10:41:12 +0100
Subject: [PATCH] Fix #10665: CheckEngines should ignore wagons when
 determining available vehicles at the start date. (#10673)

---
 src/engine.cpp | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/src/engine.cpp b/src/engine.cpp
index 649c49804d..7e45f69e90 100644
--- a/src/engine.cpp
+++ b/src/engine.cpp
@@ -1239,6 +1239,9 @@ void CheckEngines()
 	for (const Engine *e : Engine::Iterate()) {
 		if (!e->IsEnabled()) continue;
 
+		/* Don't consider train wagons, we need a powered engine available. */
+		if (e->type == VEH_TRAIN && e->u.rail.railveh_type == RAILVEH_WAGON) continue;
+
 		/* We have an available engine... yay! */
 		if ((e->flags & ENGINE_AVAILABLE) != 0 && e->company_avail != 0) return;