Added language picker screen

android/build.gradle

@@ -21,8 +21,8 @@ android {
         applicationId "com.unciv.game"
         minSdkVersion 14
         targetSdkVersion 26
-        versionCode 106
-        versionName "2.6.8"
+        versionCode 107
+        versionName "2.6.9"
     }
     buildTypes {
         release {

core/src/com/unciv/logic/civilization/CivilizationInfo.kt

@@ -128,7 +128,7 @@ class CivilizationInfo {
         statMap["Luxury resources"]= getCivResources().keys
                 .count { it.resourceType === ResourceType.Luxury } * happinessPerUniqueLuxury
 
-        for(city in cities){
+        for(city in cities.toList()){
             for(keyvalue in city.cityStats.getCityHappiness()){
                 if(statMap.containsKey(keyvalue.key))
                     statMap[keyvalue.key] = statMap[keyvalue.key]!!+keyvalue.value

core/src/com/unciv/ui/LanguagePickerScreen.kt

@@ -0,0 +1,63 @@
+package com.unciv.ui
+
+import com.badlogic.gdx.graphics.Color
+import com.badlogic.gdx.scenes.scene2d.ui.Skin
+import com.badlogic.gdx.scenes.scene2d.ui.Table
+import com.unciv.UnCivGame
+import com.unciv.logic.GameSaver
+import com.unciv.models.gamebasics.GameBasics
+import com.unciv.ui.pickerscreens.PickerScreen
+import com.unciv.ui.utils.ImageGetter
+import com.unciv.ui.utils.addClickListener
+import com.unciv.ui.utils.enable
+import com.unciv.ui.utils.tr
+
+
+class LanguageTable(val language:String,skin: Skin):Table(skin){
+    private val blue = ImageGetter.getBlue()
+    private val darkBlue = blue.cpy().lerp(Color.BLACK,0.5f)!!
+
+    init{
+        pad(10f)
+        defaults().pad(10f)
+        add(ImageGetter.getImage("Flags/$language.png"))
+        add(language)
+        pack()
+    }
+    fun update(chosenLanguage:String){
+        background = ImageGetter.getBackground( if(chosenLanguage==language) blue else darkBlue)
+    }
+}
+
+class LanguagePickerScreen: PickerScreen(){
+    var chosenLanguage = "English"
+
+    private val languageTables = ArrayList<LanguageTable>()
+
+    fun update(){
+        languageTables.forEach { it.update(chosenLanguage) }
+    }
+
+    init {
+        closeButton.isVisible = false
+        GameBasics.Translations.getLanguages().forEach {
+            val languageTable = LanguageTable(it, skin)
+            languageTable.addClickListener {
+                chosenLanguage = languageTable.language
+                rightSideButton.enable()
+                update()
+            }
+            topTable.add(languageTable).row()
+            languageTables.add(languageTable)
+        }
+
+        rightSideButton.setText("Pick language".tr())
+        rightSideButton.addClickListener {
+            UnCivGame.Current.settings.language = chosenLanguage
+            GameSaver().setGeneralSettings(UnCivGame.Current.settings)
+            UnCivGame.Current.startNewGame()
+            dispose()
+        }
+    }
+
+}