diff --git a/build.gradle b/build.gradle
index f32a1186..224a1227 100644
--- a/build.gradle
+++ b/build.gradle
@@ -1,6 +1,6 @@
 buildscript {
 
-    ext.kotlinVersion = '1.2.31'
+    ext.kotlinVersion = '1.2.41'
 
     dependencies {
         classpath "org.jetbrains.kotlin:kotlin-gradle-plugin:$kotlinVersion"
diff --git a/core/src/com/unciv/logic/battle/Battle.kt b/core/src/com/unciv/logic/battle/Battle.kt
index 8b699e39..0c9ee857 100644
--- a/core/src/com/unciv/logic/battle/Battle.kt
+++ b/core/src/com/unciv/logic/battle/Battle.kt
@@ -69,7 +69,7 @@ class Battle(val gameInfo:GameInfo) {
 
     private fun getHealthDependantDamageRatio(combatant: ICombatant): Float {
         if (combatant.getUnitType() == UnitType.City) return 1f
-        return 1 / 2f + combatant.getHealth() / 200f // Each point of health reduces damage dealt by 0.5%
+        return 1/2f + combatant.getHealth()/200f // Each point of health reduces damage dealt by 0.5%
     }
 
 
diff --git a/core/src/com/unciv/logic/battle/CityCombatant.kt b/core/src/com/unciv/logic/battle/CityCombatant.kt
index 59e74c98..5e3fca08 100644
--- a/core/src/com/unciv/logic/battle/CityCombatant.kt
+++ b/core/src/com/unciv/logic/battle/CityCombatant.kt
@@ -39,7 +39,7 @@ class CityCombatant(val city: CityInfo) : ICombatant {
         // 10% bonus foreach pop
         val strengthWithPop = (baseStrength + strengthFromTechs) * (1 + 0.1*city.population.population)
 
-        return strengthWithPop.toInt() * 100 // *100 because a city is always at 100% strength
+        return strengthWithPop.toInt()
     }
 
     override fun toString(): String {return city.name} // for debug
diff --git a/core/src/com/unciv/logic/battle/MapUnitCombatant.kt b/core/src/com/unciv/logic/battle/MapUnitCombatant.kt
index 7015f4da..1b014018 100644
--- a/core/src/com/unciv/logic/battle/MapUnitCombatant.kt
+++ b/core/src/com/unciv/logic/battle/MapUnitCombatant.kt
@@ -18,15 +18,12 @@ class MapUnitCombatant(val unit: MapUnit) : ICombatant {
     }
 
     override fun getAttackingStrength(defender: ICombatant): Int {
-        val attackerStrength: Int
-        if (isRanged()) attackerStrength = unit.getBaseUnit().rangedStrength
-        else attackerStrength = unit.getBaseUnit().strength
-        return attackerStrength*unit.health
+        if (isRanged()) return unit.getBaseUnit().rangedStrength
+        else return unit.getBaseUnit().strength
     }
 
     override fun getDefendingStrength(attacker: ICombatant): Int {
-        // too: if ranged units get ranged attacked, they use their ranged str to defend!
-        return unit.getBaseUnit().strength*unit.health
+        return unit.getBaseUnit().strength
     }
 
     override fun getUnitType(): UnitType {
diff --git a/core/src/com/unciv/models/gamebasics/Civilization.kt b/core/src/com/unciv/models/gamebasics/Civilization.kt
index 4a953a99..6cd3f69e 100644
--- a/core/src/com/unciv/models/gamebasics/Civilization.kt
+++ b/core/src/com/unciv/models/gamebasics/Civilization.kt
@@ -2,13 +2,13 @@ package com.unciv.models.gamebasics
 
 import com.badlogic.gdx.graphics.Color
 import com.unciv.models.stats.INamed
-import com.unciv.ui.utils.fromRGB
+import com.unciv.ui.utils.colorFromRGB
 
 class Civilization : INamed {
     override lateinit var name: String
     lateinit var RGB: List<Int>
     fun getColor(): Color {
-        return Color().fromRGB(RGB[0],RGB[1],RGB[2])
+        return colorFromRGB(RGB[0], RGB[1], RGB[2])
     }
     lateinit var cities: List<String>
 }
diff --git a/core/src/com/unciv/ui/cityscreen/CityScreen.kt b/core/src/com/unciv/ui/cityscreen/CityScreen.kt
index 65c0e662..1bf5b186 100644
--- a/core/src/com/unciv/ui/cityscreen/CityScreen.kt
+++ b/core/src/com/unciv/ui/cityscreen/CityScreen.kt
@@ -11,6 +11,7 @@ import com.unciv.logic.map.TileInfo
 import com.unciv.ui.utils.CameraStageBaseScreen
 import com.unciv.ui.utils.HexMath
 import com.unciv.ui.utils.ImageGetter
+import com.unciv.ui.utils.centerX
 import java.util.*
 
 class CityScreen(internal val city: CityInfo) : CameraStageBaseScreen() {
@@ -137,7 +138,7 @@ class CityScreen(internal val city: CityInfo) : CameraStageBaseScreen() {
             cityPickerTable.add(nextCityButton)
         }
         cityPickerTable.pack()
-        cityPickerTable.setPosition(stage.width / 2 - cityPickerTable.width / 2, 0f)
+        cityPickerTable.centerX(stage)
         stage.addActor(cityPickerTable)
     }
 
diff --git a/core/src/com/unciv/ui/cityscreen/CityTileGroup.kt b/core/src/com/unciv/ui/cityscreen/CityTileGroup.kt
index 3e821674..4af17c43 100644
--- a/core/src/com/unciv/ui/cityscreen/CityTileGroup.kt
+++ b/core/src/com/unciv/ui/cityscreen/CityTileGroup.kt
@@ -6,6 +6,8 @@ import com.unciv.logic.city.CityInfo
 import com.unciv.logic.map.TileInfo
 import com.unciv.ui.tilegroups.TileGroup
 import com.unciv.ui.utils.ImageGetter
+import com.unciv.ui.utils.center
+import com.unciv.ui.utils.centerX
 
 class CityTileGroup(private val city: CityInfo, tileInfo: TileInfo) : TileGroup(tileInfo) {
 
@@ -25,8 +27,8 @@ class CityTileGroup(private val city: CityInfo, tileInfo: TileInfo) : TileGroup(
 
         updateUnitImage(true)
         if(unitImage!=null) {
-            unitImage!!.setPosition(width / 2 - unitImage!!.width / 2 + 20,
-                    height / 2 - unitImage!!.height / 2 + 20) // top
+            unitImage!!.center(this)
+            unitImage!!.y += 20 // top
         }
 
         updatePopulationImage()
@@ -40,7 +42,8 @@ class CityTileGroup(private val city: CityInfo, tileInfo: TileInfo) : TileGroup(
         yieldGroup.setOrigin(Align.center)
         yieldGroup.setScale(0.7f)
         yieldGroup.toFront()
-        yieldGroup.setPosition(width / 2 - yieldGroup.width / 2, height * 0.25f - yieldGroup.height / 2)
+        yieldGroup.centerX(this)
+        yieldGroup.y= height * 0.25f - yieldGroup.height / 2
     }
 
     private fun updatePopulationImage() {
@@ -57,4 +60,4 @@ class CityTileGroup(private val city: CityInfo, tileInfo: TileInfo) : TileGroup(
     }
 
 
-}
+}
\ No newline at end of file
diff --git a/core/src/com/unciv/ui/tilegroups/TileGroup.kt b/core/src/com/unciv/ui/tilegroups/TileGroup.kt
index f202bc6c..759b67d4 100644
--- a/core/src/com/unciv/ui/tilegroups/TileGroup.kt
+++ b/core/src/com/unciv/ui/tilegroups/TileGroup.kt
@@ -8,7 +8,8 @@ import com.unciv.logic.map.RoadStatus
 import com.unciv.logic.map.TileInfo
 import com.unciv.ui.utils.HexMath
 import com.unciv.ui.utils.ImageGetter
-import com.unciv.ui.utils.fromRGB
+import com.unciv.ui.utils.center
+import com.unciv.ui.utils.colorFromRGB
 
 open class TileGroup(var tileInfo: TileInfo) : Group() {
 
@@ -34,8 +35,7 @@ open class TileGroup(var tileInfo: TileInfo) : Group() {
     private fun addCircleImage() {
         circleImage.width = 50f
         circleImage.height = 50f
-        circleImage.setPosition(width / 2 - circleImage.width / 2,
-                height / 2 - circleImage.height / 2)
+        circleImage.center(this)
         addActor(circleImage)
         circleImage.isVisible = false
     }
@@ -44,8 +44,7 @@ open class TileGroup(var tileInfo: TileInfo) : Group() {
         val imageScale = groupSize * 1.5f / hexagon.width
         hexagon.setScale(imageScale)
         hexagon.setOrigin(Align.center)
-        hexagon.setPosition((width - hexagon.width) / 2,
-                (height - hexagon.height) / 2)
+        hexagon.center(this)
         hexagon.zIndex = 0
         addActor(hexagon)
     }
@@ -54,8 +53,8 @@ open class TileGroup(var tileInfo: TileInfo) : Group() {
         populationImage = ImageGetter.getImage("StatIcons/populationGreen.png")
         populationImage!!.run {
             setSize(20f, 20f)
-            setPosition(this@TileGroup.width/2 - width/2,
-                    this@TileGroup.height/2 - height/2 - 20)
+            center(this@TileGroup)
+            y -= 20
         } // top left
         addActor(populationImage)
     }
@@ -98,8 +97,7 @@ open class TileGroup(var tileInfo: TileInfo) : Group() {
                 for(i in -2..2) {
                     val image = ImageGetter.getImage("UnitIcons/Circle.png")
                     image.setSize(5f, 5f)
-                    image.moveBy(width / 2 - image.width / 2, // center
-                            height / 2 - image.height / 2)
+                    image.center(this)
                     // in addTiles, we set the position of groups by relative world position *0.8*groupSize, filter groupSize = 50
                     // Here, we want to have the borders start HALFWAY THERE and extend towards the tiles, so we give them a position of 0.8*25.
                     // BUT, we don't actually want it all the way out there, because we want to display the borders of 2 different civs!
@@ -113,8 +111,6 @@ open class TileGroup(var tileInfo: TileInfo) : Group() {
                     image.moveBy(relativeWorldPosition.y*i * 4,  -relativeWorldPosition.x*i * 4)
 
                     image.color = tileInfo.getOwner()!!.getCivilization().getColor()
-                    //image.setOrigin(image.width / 2, image.height / 2) // This is so that the rotation is calculated from the middle of the road and not the edge
-                    //image.rotation = (90 + 180 / Math.PI * Math.atan2(relativeWorldPosition.y.toDouble(), relativeWorldPosition.x.toDouble())).toFloat()
                     addActor(image)
                     borderImages.add(image)
                 }
@@ -157,7 +153,7 @@ open class TileGroup(var tileInfo: TileInfo) : Group() {
 
     private fun updateTileColor(isViewable: Boolean) {
         val RGB = tileInfo.getBaseTerrain().RGB!!
-        hexagon.color = Color().fromRGB(RGB[0], RGB[1],RGB[2])
+        hexagon.color = colorFromRGB(RGB[0], RGB[1], RGB[2])
         if (!isViewable) hexagon.color = hexagon.color.lerp(Color.BLACK, 0.6f)
     }
 
@@ -168,8 +164,7 @@ open class TileGroup(var tileInfo: TileInfo) : Group() {
             terrainFeatureImage!!.run {
                 setSize(30f, 30f)
                 setColor(1f, 1f, 1f, 0.5f)
-                setPosition(this@TileGroup.width / 2 - width / 2,
-                        this@TileGroup.height / 2 - height / 2)
+                center(this@TileGroup)
             }
         }
 
@@ -185,9 +180,8 @@ open class TileGroup(var tileInfo: TileInfo) : Group() {
             addActor(improvementImage)
             improvementImage!!.run {
                 setSize(20f, 20f)
-
-                setPosition(this@TileGroup.width / 2 - width / 2 + 20f,
-                        this@TileGroup.height / 2 - height / 2) // right
+                center(this@TileGroup)
+                this.x+=20 // right
             }
             improvementType = tileInfo.improvement
         }
@@ -198,8 +192,8 @@ open class TileGroup(var tileInfo: TileInfo) : Group() {
             val fileName = "ResourceIcons/" + tileInfo.resource + "_(Civ5).png"
                 resourceImage = ImageGetter.getImage(fileName)
                 resourceImage!!.setSize(20f, 20f)
-            resourceImage!!.setPosition(width / 2 - resourceImage!!.width / 2 - 20f,
-                    height / 2 - resourceImage!!.height / 2) // left
+            resourceImage!!.center(this)
+            resourceImage!!.x -= 20 // left
             addActor(resourceImage!!)
         }
     }
@@ -239,8 +233,7 @@ open class TileGroup(var tileInfo: TileInfo) : Group() {
             setSize(background.width,background.height)
             addActor(background)
         }
-        unitBaseImage.setPosition(group.width/2-unitBaseImage.width/2,
-                group.height/2-unitBaseImage.height/2)
+        unitBaseImage.center(group)
         group.addActor(unitBaseImage)
         return group
     }
diff --git a/core/src/com/unciv/ui/tilegroups/WorldTileGroup.kt b/core/src/com/unciv/ui/tilegroups/WorldTileGroup.kt
index 2367a92f..a3516156 100644
--- a/core/src/com/unciv/ui/tilegroups/WorldTileGroup.kt
+++ b/core/src/com/unciv/ui/tilegroups/WorldTileGroup.kt
@@ -10,6 +10,7 @@ import com.unciv.ui.cityscreen.CityScreen
 import com.unciv.ui.cityscreen.addClickListener
 import com.unciv.ui.utils.CameraStageBaseScreen
 import com.unciv.ui.utils.ImageGetter
+import com.unciv.ui.utils.center
 
 
 class WorldTileGroup(tileInfo: TileInfo) : TileGroup(tileInfo) {
@@ -18,8 +19,7 @@ class WorldTileGroup(tileInfo: TileInfo) : TileGroup(tileInfo) {
     fun addWhiteCircleAroundUnit(){
         val whiteCircle = ImageGetter.getImage("UnitIcons/Circle.png")
         whiteCircle.setSize(25f,25f)
-        whiteCircle.setPosition(unitImage!!.width/2 - whiteCircle.width/2,
-                unitImage!!.height/2 - whiteCircle.height/2)
+        whiteCircle.center(unitImage!!)
         unitImage!!.addActor(whiteCircle)
         whiteCircle.toBack()
     }
@@ -38,8 +38,8 @@ class WorldTileGroup(tileInfo: TileInfo) : TileGroup(tileInfo) {
         updateCityButton(city)
         updateUnitImage(isViewable)
         if(unitImage!=null) {
-            unitImage!!.setPosition(width / 2 - unitImage!!.width / 2,
-                    height / 2 - unitImage!!.height / 2 + 20) // top
+            unitImage!!.center(this)
+            unitImage!!.y += 20 // top
         }
     }
 
@@ -72,8 +72,7 @@ class WorldTileGroup(tileInfo: TileInfo) : TileGroup(tileInfo) {
                 toFront()
             }
 
-            cityButton!!.setPosition(width / 2 - cityButton!!.width / 2,
-                    height / 2 - cityButton!!.height / 2)
+            cityButton!!.center(this)
 
         }
     }
diff --git a/core/src/com/unciv/ui/utils/CameraStageBaseScreen.kt b/core/src/com/unciv/ui/utils/CameraStageBaseScreen.kt
index 4b6a5143..242063e6 100644
--- a/core/src/com/unciv/ui/utils/CameraStageBaseScreen.kt
+++ b/core/src/com/unciv/ui/utils/CameraStageBaseScreen.kt
@@ -6,6 +6,7 @@ import com.badlogic.gdx.graphics.Color
 import com.badlogic.gdx.graphics.GL20
 import com.badlogic.gdx.graphics.g2d.Batch
 import com.badlogic.gdx.graphics.g2d.SpriteBatch
+import com.badlogic.gdx.scenes.scene2d.Actor
 import com.badlogic.gdx.scenes.scene2d.Stage
 import com.badlogic.gdx.scenes.scene2d.Touchable
 import com.badlogic.gdx.scenes.scene2d.ui.*
@@ -81,8 +82,7 @@ open class CameraStageBaseScreen : Screen {
             }
         tutorialTable.add(button).pad(10f)
         tutorialTable.pack()
-        tutorialTable.setPosition(stage.width / 2 - tutorialTable.width / 2,
-                stage.height / 2 - tutorialTable.height / 2)
+        tutorialTable.center(stage)
         stage.addActor(tutorialTable)
     }
 
@@ -105,6 +105,14 @@ fun Button.enable() {
 fun <E> List<E>.getRandom(): E = if (size == 0) throw Exception() else get((Math.random() * size).toInt())
 
 
-fun Color.fromRGB(r:Int,g:Int,b:Int): Color {
+fun colorFromRGB(r: Int, g: Int, b: Int): Color {
     return Color(r/255f, g/255f, b/255f, 1f)
-}
\ No newline at end of file
+}
+
+fun Actor.centerX(parent:Actor){ x = parent.width/2 - width/2 }
+fun Actor.centerY(parent:Actor){ y = parent.height/2- height/2}
+fun Actor.center(parent:Actor){ centerX(parent); centerY(parent)}
+
+fun Actor.centerX(parent:Stage){ x = parent.width/2 - width/2 }
+fun Actor.centerY(parent:Stage){ y = parent.height/2- height/2}
+fun Actor.center(parent:Stage){ centerX(parent); centerY(parent)}
diff --git a/core/src/com/unciv/ui/worldscreen/BattleTable.kt b/core/src/com/unciv/ui/worldscreen/BattleTable.kt
index 437d0b7d..cb0fb4e4 100644
--- a/core/src/com/unciv/ui/worldscreen/BattleTable.kt
+++ b/core/src/com/unciv/ui/worldscreen/BattleTable.kt
@@ -13,6 +13,7 @@ import com.unciv.logic.map.UnitType
 import com.unciv.ui.cityscreen.addClickListener
 import com.unciv.ui.utils.CameraStageBaseScreen
 import com.unciv.ui.utils.ImageGetter
+import com.unciv.ui.utils.centerX
 import com.unciv.ui.utils.disable
 import kotlin.math.max
 
@@ -70,8 +71,8 @@ class BattleTable(val worldScreen: WorldScreen): Table() {
 
         row().pad(5f)
 
-        add("Strength: "+attacker.getAttackingStrength(defender)/100f)
-        add("Strength: "+defender.getDefendingStrength(attacker)/100f)
+        add("Strength: "+attacker.getAttackingStrength(defender))
+        add("Strength: "+defender.getDefendingStrength(attacker))
         row().pad(5f)
 
         val attackerModifiers = battle.getAttackModifiers(attacker,defender)  .map { it.key+": "+(if(it.value>0)"+" else "")+(it.value*100).toInt()+"%" }
@@ -82,8 +83,8 @@ class BattleTable(val worldScreen: WorldScreen): Table() {
             if (defenderModifiers.size > i) add(defenderModifiers[i]) else add()
             row().pad(5f)
         }
-        add((battle.getAttackingStrength(attacker,defender)/100f).toString())
-        add((battle.getDefendingStrength(attacker,defender)/100f).toString())
+        add(battle.getAttackingStrength(attacker,defender).toString())
+        add(battle.getDefendingStrength(attacker,defender).toString())
         row().pad(5f)
 
         var damageToDefender = battle.calculateDamageToDefender(attacker,defender)
diff --git a/core/src/com/unciv/ui/worldscreen/CivStatsTable.kt b/core/src/com/unciv/ui/worldscreen/CivStatsTable.kt
index 26a4a0cd..4806ef15 100644
--- a/core/src/com/unciv/ui/worldscreen/CivStatsTable.kt
+++ b/core/src/com/unciv/ui/worldscreen/CivStatsTable.kt
@@ -9,7 +9,8 @@ import com.unciv.models.gamebasics.ResourceType
 import com.unciv.ui.cityscreen.addClickListener
 import com.unciv.ui.utils.CameraStageBaseScreen
 import com.unciv.ui.utils.ImageGetter
-import com.unciv.ui.utils.fromRGB
+import com.unciv.ui.utils.centerY
+import com.unciv.ui.utils.colorFromRGB
 import kotlin.math.ceil
 
 class CivStatsTable(val screen: WorldScreen) : Table() {
@@ -18,10 +19,10 @@ class CivStatsTable(val screen: WorldScreen) : Table() {
             .apply { fontColor = Color.valueOf("f5f5f5ff") }
 
     private val turnsLabel = Label("Turns: 0/400", labelStyle)
-    private val goldLabel = Label("Gold:",labelStyle).apply { color = Color().fromRGB(225,217,71) }
-    private val scienceLabel = Label("Science:",labelStyle).apply { color = Color().fromRGB(78,140,151) }
+    private val goldLabel = Label("Gold:",labelStyle).apply { color = colorFromRGB(225, 217, 71) }
+    private val scienceLabel = Label("Science:",labelStyle).apply { color = colorFromRGB(78, 140, 151) }
     private val happinessLabel = Label("Happiness:",labelStyle)
-    private val cultureLabel = Label("Culture:",labelStyle).apply { color = Color().fromRGB(210,94,210) }
+    private val cultureLabel = Label("Culture:",labelStyle).apply { color = colorFromRGB(210, 94, 210) }
     private val resourceLabels = HashMap<String, Label>()
     private val resourceImages = HashMap<String, Image>()
     private val happinessImage = ImageGetter.getStatIcon("Happiness")
@@ -84,7 +85,7 @@ class CivStatsTable(val screen: WorldScreen) : Table() {
         menuButton.addClickListener {
             screen.optionsTable.isVisible = !screen.optionsTable.isVisible
         }
-        menuButton.y = this.height/2-menuButton.height/2
+        menuButton.centerY(this)
         menuButton.x = menuButton.y
         return menuButton
     }
@@ -126,7 +127,7 @@ class CivStatsTable(val screen: WorldScreen) : Table() {
             happinessImage.drawable = ImageGetter.getStatIcon("Malcontent").drawable
         }
         else{
-            happinessLabel.color = Color().fromRGB(92,194,77)
+            happinessLabel.color = colorFromRGB(92, 194, 77)
             happinessImage.drawable = ImageGetter.getStatIcon("Happiness").drawable
         }
 
diff --git a/core/src/com/unciv/ui/worldscreen/TileMapHolder.kt b/core/src/com/unciv/ui/worldscreen/TileMapHolder.kt
index 80326d2f..ebddb708 100644
--- a/core/src/com/unciv/ui/worldscreen/TileMapHolder.kt
+++ b/core/src/com/unciv/ui/worldscreen/TileMapHolder.kt
@@ -6,6 +6,7 @@ import com.badlogic.gdx.scenes.scene2d.Group
 import com.badlogic.gdx.scenes.scene2d.InputEvent
 import com.badlogic.gdx.scenes.scene2d.ui.ScrollPane
 import com.badlogic.gdx.scenes.scene2d.utils.ActorGestureListener
+import com.badlogic.gdx.utils.Align
 import com.unciv.logic.civilization.CivilizationInfo
 import com.unciv.logic.map.TileInfo
 import com.unciv.logic.map.TileMap
@@ -13,7 +14,7 @@ import com.unciv.logic.map.UnitType
 import com.unciv.ui.cityscreen.addClickListener
 import com.unciv.ui.tilegroups.WorldTileGroup
 import com.unciv.ui.utils.HexMath
-import com.unciv.ui.utils.fromRGB
+import com.unciv.ui.utils.colorFromRGB
 
 class TileMapHolder(internal val worldScreen: WorldScreen, internal val tileMap: TileMap, internal val civInfo: CivilizationInfo) : ScrollPane(null) {
     internal var selectedTile: TileInfo? = null
@@ -63,7 +64,7 @@ class TileMapHolder(internal val worldScreen: WorldScreen, internal val tileMap:
 
         widget = allTiles
         setFillParent(true)
-        setOrigin(worldScreen.stage.width / 2, worldScreen.stage.height / 2)
+        setOrigin(Align.center)
         setSize(worldScreen.stage.width, worldScreen.stage.height)
         addListener(object : ActorGestureListener() {
             var lastScale = 1f
@@ -110,10 +111,10 @@ class TileMapHolder(internal val worldScreen: WorldScreen, internal val tileMap:
             }
 
             for(tile: TileInfo in unit.getDistanceToTiles().keys)
-                tileGroups[tile]!!.showCircle(Color().fromRGB(0,120,215))
+                tileGroups[tile]!!.showCircle(colorFromRGB(0, 120, 215))
 
             for (tile in attackableTiles.filter { it.unit!=null && it.unit!!.owner != unit.owner && civViewableTiles.contains(it)})
-                tileGroups[tile]!!.showCircle(Color().fromRGB(237,41,57))
+                tileGroups[tile]!!.showCircle(colorFromRGB(237, 41, 57))
         }
 
         if(selectedTile!=null)
diff --git a/core/src/com/unciv/ui/worldscreen/WorldScreenOptionsTable.kt b/core/src/com/unciv/ui/worldscreen/WorldScreenOptionsTable.kt
index e66edd7a..82240983 100644
--- a/core/src/com/unciv/ui/worldscreen/WorldScreenOptionsTable.kt
+++ b/core/src/com/unciv/ui/worldscreen/WorldScreenOptionsTable.kt
@@ -12,6 +12,7 @@ import com.unciv.ui.cityscreen.addClickListener
 import com.unciv.ui.pickerscreens.PolicyPickerScreen
 import com.unciv.ui.utils.CameraStageBaseScreen
 import com.unciv.ui.utils.ImageGetter
+import com.unciv.ui.utils.center
 
 class WorldScreenOptionsTable internal constructor(worldScreen: WorldScreen, private val civInfo: CivilizationInfo) : Table() {
 
@@ -67,7 +68,6 @@ class WorldScreenOptionsTable internal constructor(worldScreen: WorldScreen, pri
         add(closeButton)
 
         pack() // Needed to show the background.
-        setPosition(worldScreen.stage.width / 2 - width / 2,
-                worldScreen.stage.height / 2 - height / 2)
+        center(worldScreen.stage)
     }
 }