The original capital can not be razed (#2412)

* Civ is not defeated while at least 1 settler is alive

* The original capital cannot be razed

* Revert "Civ is not defeated while at least 1 settler is alive"

Defeat condition is: no cities remained

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

@@ -56,6 +56,10 @@ class CityInfo {
     var attackedThisTurn = false
     var hasSoldBuildingThisTurn = false
     var isPuppet = false
+    /** The very first found city is the _original_ capital,
+     * while the _current_ capital can be any other city after the original one is captured.
+     * It is important to distinct them since the original cannot be razed and defines the Domination Victory. */
+    var isOriginalCapital = false
 
     constructor()   // for json parsing, we need to have a default constructor
     constructor(civInfo: CivilizationInfo, cityLocation: Vector2) {  // new city!
@@ -76,6 +80,7 @@ class CityInfo {
 
         name = cityNamePrefix + cityName
 
+        isOriginalCapital = civInfo.citiesCreated == 0
         civInfo.citiesCreated++
 
         civInfo.cities = civInfo.cities.toMutableList().apply { add(this@CityInfo) }
@@ -125,6 +130,7 @@ class CityInfo {
         toReturn.foundingCiv = foundingCiv
         toReturn.turnAcquired = turnAcquired
         toReturn.isPuppet = isPuppet
+        toReturn.isOriginalCapital = isOriginalCapital
         return toReturn
     }
 
@@ -139,7 +145,7 @@ class CityInfo {
         val mediumTypes = civInfo.citiesConnectedToCapitalToMediums[this] ?: return false
         return connectionTypePredicate(mediumTypes)
     }
-    fun isInResistance() = resistanceCounter>0
+    fun isInResistance() = resistanceCounter > 0
 
 
     fun getRuleset() = civInfo.gameInfo.ruleSet

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

@@ -262,8 +262,8 @@ class CivilizationInfo {
 
     override fun toString(): String {return civName} // for debug
 
-    /** Returns true if the civ was fully initialized and has no cities or settlers remaining */
-    fun isDefeated()= cities.isEmpty()
+    /** Returns true if the civ was fully initialized and has no cities remaining */
+    fun isDefeated()= cities.isEmpty() // No cities
             && exploredTiles.isNotEmpty()  // Dirty hack: exploredTiles are empty only before starting units are placed
             && !isBarbarian() // Barbarians can be never defeated
             && (citiesCreated > 0 || !getCivUnits().any { it.name == Constants.settler })

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

@@ -125,7 +125,9 @@ class CityScreen(internal val city: CityInfo): CameraStageBaseScreen() {
             val razeCityButton = "Raze city".toTextButton()
             razeCityButton.labelCell.pad(10f)
             razeCityButton.onClick { city.isBeingRazed=true; update() }
-            if(!UncivGame.Current.worldScreen.isPlayersTurn) razeCityButton.disable()
+            if(!UncivGame.Current.worldScreen.isPlayersTurn || city.isOriginalCapital)
+                razeCityButton.disable()
+
             razeCityButtonHolder.add(razeCityButton).colspan(cityPickerTable.columns)
         } else {
             val stopRazingCityButton = "Stop razing city".toTextButton()

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

@@ -99,13 +99,15 @@ class AlertPopup(val worldScreen: WorldScreen, val popupAlert: PopupAlert): Popu
                     addSeparator()
 
 
-                    add("Raze".toTextButton().onClick {
+                    add("Raze".toTextButton().apply {
+                        if (city.isOriginalCapital) disable()
+                        else onClick {
                         city.puppetCity(conqueringCiv)
                         city.annexCity()
                         city.isBeingRazed = true
                         worldScreen.shouldUpdate=true
                         close()
-                    }).row()
+                    }}).row()
                     addGoodSizedLabel("Razing the city annexes it, and starts razing the city to the ground.").row()
                     addGoodSizedLabel("The population will gradually dwindle until the city is destroyed.").row()
                 } else {