From 5a78c612abd0d58c35fd537fd4126827a5296f65 Mon Sep 17 00:00:00 2001
From: Yair Morgenstern <yairm210@hotmail.com>
Date: Sun, 27 Jan 2019 23:45:39 +0200
Subject: [PATCH] Fixed errors caused by AI civs not having any non-researched
 techs to choose from, when all techs are researched - now choose future tech
 again

---
 core/src/com/unciv/logic/automation/NextTurnAutomation.kt | 7 ++++++-
 1 file changed, 6 insertions(+), 1 deletion(-)

diff --git a/core/src/com/unciv/logic/automation/NextTurnAutomation.kt b/core/src/com/unciv/logic/automation/NextTurnAutomation.kt
index 5af3364e37..4525f9cfdb 100644
--- a/core/src/com/unciv/logic/automation/NextTurnAutomation.kt
+++ b/core/src/com/unciv/logic/automation/NextTurnAutomation.kt
@@ -1,6 +1,5 @@
 package com.unciv.logic.automation
 
-import com.unciv.logic.city.CityInfo
 import com.unciv.logic.civilization.CivilizationInfo
 import com.unciv.logic.civilization.PlayerType
 import com.unciv.logic.map.MapUnit
@@ -85,6 +84,11 @@ class NextTurnAutomation{
             val costs = techsGroups.keys.sorted()
 
             val tech: Technology
+            if (researchableTechs.isEmpty()) { // no non-researched techs available, go for future tech
+                civInfo.tech.techsToResearch.add("Future Tech")
+                return
+            }
+
             val techsCheapest = techsGroups[costs[0]]!!
             //Do not consider advanced techs if only one tech left in cheapest groupe
             if (techsCheapest.size == 1 || costs.size == 1) {
@@ -94,6 +98,7 @@ class NextTurnAutomation{
                 val techsAdvanced = techsGroups[costs[1]]!!
                 tech = (techsCheapest + techsAdvanced).getRandom()
             }
+
             civInfo.tech.techsToResearch.add(tech.name)
         }
     }