From 54df4ba0c071f2b01334c3fc4aba3406b38b2fbf Mon Sep 17 00:00:00 2001
From: Xander Lenstra <71121390+xlenstra@users.noreply.github.com>
Date: Wed, 21 Jul 2021 23:37:54 +0200
Subject: [PATCH] Fixed a crash in badly defined mods (#4598)

---
 core/src/com/unciv/logic/civilization/CivilizationInfo.kt | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/core/src/com/unciv/logic/civilization/CivilizationInfo.kt b/core/src/com/unciv/logic/civilization/CivilizationInfo.kt
index 945ccbbcec..a042bac3e5 100644
--- a/core/src/com/unciv/logic/civilization/CivilizationInfo.kt
+++ b/core/src/com/unciv/logic/civilization/CivilizationInfo.kt
@@ -779,6 +779,8 @@ class CivilizationInfo {
         val givingCityState = getKnownCivs().filter { it.isCityState() && it.getAllyCiv() == civName}.random()
         var giftableUnits = gameInfo.ruleSet.units.values.filter { it.isGreatPerson() }
         if (!gameInfo.hasReligionEnabled()) giftableUnits = giftableUnits.filterNot { it.uniques.contains("Great Person - [Faith]")}
+        if (giftableUnits.isEmpty()) // For badly defined mods that don't have great people but do have the policy that makes city states grant them
+            return
         val giftedUnit = giftableUnits.random()
         val cities = NextTurnAutomation.getClosestCities(this, givingCityState)
         val placedUnit = placeUnitNearTile(cities.city1.location, giftedUnit.name)