From 4ebff567e17d9e53e9ce411ea88679eb80be8075 Mon Sep 17 00:00:00 2001
From: Aaron Veden <veden@vedbyte.com>
Date: Fri, 26 Jan 2018 18:51:48 -0800
Subject: [PATCH] fix for empty interval

---
 README.md          | 4 ++--
 Upgrade.lua        | 6 +++---
 changelog.txt      | 6 ++++++
 libs/BaseUtils.lua | 2 +-
 libs/Constants.lua | 2 +-
 5 files changed, 13 insertions(+), 7 deletions(-)

diff --git a/README.md b/README.md
index 4ffb937..056bd2d 100755
--- a/README.md
+++ b/README.md
@@ -1,5 +1,5 @@
 # Rampant Tactics
-Factorio Mod - Improves the enemies tactics by using potential fields/pheromones allowing probing of defenses, retreats, reinforcements, counterattacking, breaching, rallying death cry, and player hunting. Also removes homing biter projectiles. Adds new Enemies. Difficulty setting in mod options menu.
+Factorio Mod - Improves the enemies tactics by using potential fields/pheromones allowing probing of defenses, retreats, reinforcements, counterattacking, breaching, rallying death cry, and player hunting. Also removes homing biter projectiles. Adds new Enemies. Difficulty setting in mod options menu.  
 
 # Forum Post
 
@@ -26,7 +26,7 @@ Configure Options not in game menu:
 
 # Features
 
-- New Enemy Factions - Neutral, Acid, Fast, Physical, Electric, Inferno, Suicide, Fire, Nuclear, Laser, Troll
+- New Enemy Factions - Neutral, Acid, Fast, Physical, Electric, Inferno, Suicide, Fire, Nuclear, Laser, Troll  
 - Swarming - Units will smoothly slide by one another allowing for streamlined attacking  
 - Difficulty Scaling - A mod option to control how quickly the ai can perform actions like making attack waves.  
 - Nocturnal Mode - A mod option to force biters to only attack at night. Does not yet affect vanilla attacks. Best use with daynight extender mod  
diff --git a/Upgrade.lua b/Upgrade.lua
index bcdad19..9ac2466 100755
--- a/Upgrade.lua
+++ b/Upgrade.lua
@@ -184,10 +184,10 @@ function upgrade.attempt(natives)
 	game.surfaces[1].print("Rampant - Version 0.16.6")
 	global.version = constants.VERSION_41
     end
-    if (global.version < constants.VERSION_42) then
+    if (global.version < constants.VERSION_43) then
 	
-	game.surfaces[1].print("Rampant - Version 0.16.7")
-	global.version = constants.VERSION_42
+	game.surfaces[1].print("Rampant - Version 0.16.8")
+	global.version = constants.VERSION_43
     end
     
     return starting ~= global.version, natives
diff --git a/changelog.txt b/changelog.txt
index 1161466..41f40a1 100755
--- a/changelog.txt
+++ b/changelog.txt
@@ -1,3 +1,9 @@
+---------------------------------------------------------------------------------------------------
+Version: 0.16.8
+Date: 1. 26. 2018
+  Bugfixes:
+    - Added a check for 0 elements on_tick empty interval (https://forums.factorio.com/viewtopic.php?f=94&t=31445&start=220#p338531)
+
 ---------------------------------------------------------------------------------------------------
 Version: 0.16.7
 Date: 1. 26. 2018
diff --git a/libs/BaseUtils.lua b/libs/BaseUtils.lua
index 8295db7..97c204b 100755
--- a/libs/BaseUtils.lua
+++ b/libs/BaseUtils.lua
@@ -236,7 +236,7 @@ end
 
 function baseUtils.upgradeBase(base)
     local paths = BASE_ALIGNMENT_PATHS[base.alignment]
-    if paths then
+    if paths and (#paths > 0) then
 	base.alignment = paths[mRandom(#paths)]
 	return true
     end
diff --git a/libs/Constants.lua b/libs/Constants.lua
index 089262a..0ce5537 100755
--- a/libs/Constants.lua
+++ b/libs/Constants.lua
@@ -18,7 +18,7 @@ constants.VERSION_28 = 28
 constants.VERSION_33 = 33
 constants.VERSION_38 = 38
 constants.VERSION_41 = 41
-constants.VERSION_42 = 42
+constants.VERSION_43 = 43
 
 -- misc