Now shows which tile the city will next expand to

core/src/com/unciv/logic/city/CityExpansionManager.kt

@@ -1,6 +1,7 @@
 package com.unciv.logic.city
 
 import com.unciv.logic.Automation
+import com.unciv.logic.map.TileInfo
 
 class CityExpansionManager {
 
@@ -29,13 +30,18 @@ class CityExpansionManager {
     private fun addNewTileWithCulture() {
         cultureStored -= getCultureToNextTile()
 
-        for (i in 2..3) {
+        val chosenTile = getNewTile()
+        cityInfo.tiles.add(chosenTile!!.position)
+    }
+
+    fun getNewTile(): TileInfo? {
+        for (i in 2..5) {
             val tiles = cityInfo.getCenterTile().getTilesInDistance(i).filter { it.getOwner() == null }
             if (tiles.isEmpty()) continue
             val chosenTile = tiles.maxBy { Automation().rankTile(it,cityInfo.civInfo) }
-            cityInfo.tiles.add(chosenTile!!.position)
+            return chosenTile
-            return
         }
+        return null
     }
 
     fun nextTurn(culture: Float) {

core/src/com/unciv/ui/cityscreen/CityScreen.kt

@@ -95,9 +95,15 @@ class CityScreen(internal val city: CityInfo) : CameraStageBaseScreen() {
 
 
     private fun updateTileGroups() {
+        val nextTile = city.expansion.getNewTile()
         for (HG in tileGroups) {
             HG.update()
+            if(HG.tileInfo == nextTile){
+                HG.showCircle(Color.PURPLE)
+                HG.setColor(0f,0f,0f,0.7f)
+            }
         }
+
     }
 
     private fun updateCityPickerTable() {

core/src/com/unciv/ui/tilegroups/TileGroup.kt

@@ -11,29 +11,42 @@ import com.unciv.ui.utils.ImageGetter
 
 open class TileGroup(var tileInfo: TileInfo) : Group() {
 
-    protected var hexagon: Image
+    protected val hexagon = ImageGetter.getImage("TerrainIcons/Hexagon.png")
     protected var terrainFeatureImage:Image?=null
 
     protected var resourceImage: Image? = null
     protected var improvementImage: Image? =null
     private var improvementType: String? = null
     var populationImage: Image? = null
-    private var roadImages = HashMap<String, Image>()
+    private val roadImages = HashMap<String, Image>()
-    private var borderImages = ArrayList<Image>()
+    private val borderImages = ArrayList<Image>()
     protected var unitImage: Group? = null
-
+    private val circleImage = ImageGetter.getImage("UnitIcons/Circle.png") // for blue and red circles on the tile
 
     init {
         val groupSize = 50f
         this.setSize(groupSize,groupSize)
-        hexagon = ImageGetter.getImage("TerrainIcons/Hexagon.png")
+        addHexagon(groupSize)
+        addCircleImage()
+    }
+
+    private fun addCircleImage() {
+        circleImage.width = 50f
+        circleImage.height = 50f
+        circleImage.setPosition(width / 2 - circleImage.width / 2,
+                height / 2 - circleImage.height / 2)
+        addActor(circleImage)
+        circleImage.isVisible = false
+    }
+
+    private fun addHexagon(groupSize: Float) {
         val imageScale = groupSize * 1.5f / hexagon.width
         hexagon.setScale(imageScale)
         hexagon.setOrigin(Align.center)
         hexagon.setPosition((width - hexagon.width) / 2,
                 (height - hexagon.height) / 2)
-        this.addActor(hexagon)
         hexagon.zIndex = 0
+        addActor(hexagon)
     }
 
     fun addPopulationIcon() {
@@ -58,6 +71,7 @@ open class TileGroup(var tileInfo: TileInfo) : Group() {
             return
         }
 
+        hideCircle()
         updateTerrainFeatureImage()
         updateTileColor(isViewable)
         updateResourceImage()
@@ -69,7 +83,7 @@ open class TileGroup(var tileInfo: TileInfo) : Group() {
 
     private fun updateBorderImages() {
         for (border in borderImages) border.remove() //clear
-        borderImages = arrayListOf()
+        borderImages.clear()
 
         if (tileInfo.getOwner() != null) {
             for (neighbor in tileInfo.neighbors.filter { it.getOwner() != tileInfo.getOwner() }) {
@@ -221,4 +235,11 @@ open class TileGroup(var tileInfo: TileInfo) : Group() {
     }
 
 
+    fun showCircle(color:Color){
+        circleImage.isVisible = true
+        color.a = 0.3f
+        circleImage.color = color
+    }
+
+    fun hideCircle(){circleImage.isVisible=false}
 }

core/src/com/unciv/ui/tilegroups/WorldTileGroup.kt

@@ -1,6 +1,5 @@
 package com.unciv.ui.tilegroups
 
-import com.badlogic.gdx.graphics.Color
 import com.badlogic.gdx.scenes.scene2d.ui.Label
 import com.badlogic.gdx.scenes.scene2d.ui.Table
 import com.badlogic.gdx.utils.Align
@@ -15,16 +14,6 @@ import com.unciv.ui.utils.ImageGetter
 
 class WorldTileGroup(tileInfo: TileInfo) : TileGroup(tileInfo) {
     var cityButton: Table? = null
-    private var circleImage = ImageGetter.getImage("UnitIcons/Circle.png") // for blue and red circles on the tile
-
-    init{
-        circleImage.width = 50f
-        circleImage.height = 50f
-        circleImage.setPosition(width/2-circleImage.width/2,
-                height/2-circleImage.height/2)
-        addActor(circleImage)
-        circleImage.isVisible = false
-    }
 
     fun addWhiteCircleAroundUnit(){
         val whiteCircle = ImageGetter.getImage("UnitIcons/Circle.png")
@@ -35,14 +24,6 @@ class WorldTileGroup(tileInfo: TileInfo) : TileGroup(tileInfo) {
         whiteCircle.toBack()
     }
 
-    fun showCircle(color:Color){
-        circleImage.isVisible = true
-        color.a = 0.3f
-        circleImage.color = color
-    }
-
-    fun hideCircle(){circleImage.isVisible=false}
-
 
     override fun update(isViewable: Boolean) {
         super.update(isViewable)

core/src/com/unciv/ui/worldscreen/TileMapHolder.kt

@@ -85,7 +85,6 @@ class TileMapHolder(internal val worldScreen: WorldScreen, internal val tileMap:
 
     internal fun updateTiles() {
         for (WG in tileGroups.values){
-            WG.hideCircle()
             WG.update(false)
         }