From d2dc9fe3d41f0b5d306f4c9c5b92a91c56235bef Mon Sep 17 00:00:00 2001
From: Jonathan G Rennison <j.g.rennison@gmail.com>
Date: Wed, 4 Aug 2021 17:33:12 +0100
Subject: [PATCH] Use ID as sort tie-breaker in TimetableProgress comparison

---
 src/timetable.h | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/src/timetable.h b/src/timetable.h
index 61b05596ff..bc8ee90ee2 100644
--- a/src/timetable.h
+++ b/src/timetable.h
@@ -26,7 +26,7 @@ struct TimetableProgress {
 	int cumulative_ticks;
 
 	bool IsValidForSeparation() const { return this->cumulative_ticks >= 0; }
-	bool operator<(const TimetableProgress& other) const { return std::tie(this->order_count, this->order_ticks) < std::tie(other.order_count, other.order_ticks); }
+	bool operator<(const TimetableProgress& other) const { return std::tie(this->order_count, this->order_ticks, this->id) < std::tie(other.order_count, other.order_ticks, other.id); }
 };
 
 std::vector<TimetableProgress> PopulateSeparationState(const Vehicle *v_start);