CityScreen Buy button rework (#4843)

* CityScreen Buy button rework
- e.g. "Buy" for Missionary
- Info pane staying even when building no longer offered
- Purchase Prompt a little prettier

* Urgent Fix - noMods switch default

* CityScreen Buy button rework - patch1

android/assets/jsons/translations/German.properties

@@ -634,8 +634,8 @@ Raze city = Stadt niederreißen
 Stop razing city = Niederreißen der Stadt stoppen
 Buy for [amount] gold = Für [amount] Gold kaufen
 Buy = Kaufen
-Currently you have [amount] gold. = Zur Zeit besitzt du [amount] Gold.
-Would you like to purchase [constructionName] for [buildingGoldCost] gold? = [constructionName] für [buildingGoldCost] Gold kaufen?
+Currently you have [amount] [stat]. = Zur Zeit besitzt du [amount] [stat].
+Would you like to purchase [constructionName] for [buildingGoldCost] [stat]? = [constructionName] für [buildingGoldCost] [stat] kaufen?
 No space available to place [unit] near [city] = Kein Platz verfügbar um [unit] nahe [city] zu platzieren
 Maintenance cost = Wartungskosten
 Pick construction = Produktion auswählen

android/assets/jsons/translations/template.properties

@@ -631,8 +631,8 @@ Raze city =
 Stop razing city = 
 Buy for [amount] gold = 
 Buy = 
-Currently you have [amount] gold. = 
-Would you like to purchase [constructionName] for [buildingGoldCost] gold? = 
+Currently you have [amount] [stat]. = 
+Would you like to purchase [constructionName] for [buildingGoldCost] [stat]? = 
 No space available to place [unit] near [city] = 
 Maintenance cost = 
 Pick construction = 

core/src/com/unciv/models/stats/Stat.kt

@@ -16,4 +16,11 @@ enum class Stat(
     Culture(NotificationIcon.Culture, UncivSound.Paper, Fonts.culture),
     Happiness(NotificationIcon.Happiness, UncivSound.Click, Fonts.happiness),
     Faith(NotificationIcon.Faith, UncivSound.Choir, Fonts.faith);
+    
+    companion object {
+        val statsUsableToBuy = listOf(Gold, Food, Science, Culture, Faith)
+    }
 }
+
+// Should the well-known colours for these be needed:
+// Production = "#c14d00", Food = "#38ff70", Gold = "#ffeb7f", Science = "#8c9dff", Culture = "#8b60ff", Happiness = "#ffd800", Faith = "#cbdfff"

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

@@ -120,28 +120,18 @@ class CityConstructionsTable(val cityScreen: CityScreen) : Table(CameraStageBase
         val city = cityScreen.city
         val cityConstructions = city.cityConstructions
 
-        for (unit in city.getRuleset().units.values.filter { it.shouldBeDisplayed(cityConstructions) }) {
-            val useStoredProduction = !cityConstructions.isBeingConstructedOrEnqueued(unit.name)
-            var buttonText = unit.name.tr() + cityConstructions.getTurnsToConstructionString(unit.name, useStoredProduction)
-            for ((resource, amount) in unit.getResourceRequirements()) {
-                if (amount == 1) buttonText += "\n" + "Consumes 1 [$resource]".tr()
-                else buttonText += "\n" + "Consumes [$amount] [$resource]".tr()
+        val constructionsSequence = city.getRuleset().units.values.asSequence() +
+                city.getRuleset().buildings.values.asSequence()
+        for (entry in constructionsSequence.filter { it.shouldBeDisplayed(cityConstructions) }) {
+            val useStoredProduction = entry is Building || !cityConstructions.isBeingConstructedOrEnqueued(entry.name)
+            var buttonText = entry.name.tr() + cityConstructions.getTurnsToConstructionString(entry.name, useStoredProduction)
+            for ((resource, amount) in entry.getResourceRequirements()) {
+                buttonText += "\n" + (if (amount == 1) "Consumes 1 [$resource]"
+                else "Consumes [$amount] [$resource]").tr()
             }
 
-            constructionButtonDTOList.add(ConstructionButtonDTO(unit, buttonText,
-                    unit.getRejectionReason(cityConstructions)))
-        }
-
-
-        for (building in city.getRuleset().buildings.values.filter { it.shouldBeDisplayed(cityConstructions) }) {
-            var buttonText = building.name.tr() + cityConstructions.getTurnsToConstructionString(building.name)
-            for ((resource, amount) in building.getResourceRequirements()) {
-                if (amount == 1) buttonText += "\n" + "Consumes 1 [$resource]".tr()
-                else buttonText += "\n" + "Consumes [$amount] [$resource]".tr()
-            }
-
-            constructionButtonDTOList.add(ConstructionButtonDTO(building, buttonText,
-                    building.getRejectionReason(cityConstructions)))
+            constructionButtonDTOList.add(ConstructionButtonDTO(entry, buttonText,
+                entry.getRejectionReason(cityConstructions)))
         }
 
         for (specialConstruction in PerpetualConstruction.perpetualConstructionsMap.values
@@ -376,7 +366,7 @@ class CityConstructionsTable(val cityScreen: CityScreen) : Table(CameraStageBase
         }
     }
 
-    fun purchaseConstruction(construction: INonPerpetualConstruction, stat: Stat = Stat.Gold) {
+    private fun purchaseConstruction(construction: INonPerpetualConstruction, stat: Stat = Stat.Gold) {
         val city = cityScreen.city
         if (!city.cityConstructions.purchaseConstruction(construction.name, selectedQueueEntry, false, stat)) {
             Popup(cityScreen).apply {
@@ -386,7 +376,7 @@ class CityConstructionsTable(val cityScreen: CityScreen) : Table(CameraStageBase
             }
             return
         }
-        if (isSelectedQueueEntry()) {
+        if (isSelectedQueueEntry() || cityScreen.selectedConstruction?.isBuildable(city.cityConstructions) != true) {
             selectedQueueEntry = -1
             cityScreen.selectedConstruction = null
         }
@@ -394,38 +384,43 @@ class CityConstructionsTable(val cityScreen: CityScreen) : Table(CameraStageBase
     }
     
     private fun getBuyButtons(construction: INonPerpetualConstruction?): List<TextButton> {
-        return listOf(Stat.Gold, Stat.Faith, Stat.Culture, Stat.Science, Stat.Food)
-            .mapNotNull { getBuyButton(construction, it) }
+        return Stat.statsUsableToBuy.mapNotNull { getBuyButton(construction, it) }
     }
 
     private fun getBuyButton(construction: INonPerpetualConstruction?, stat: Stat = Stat.Gold): TextButton? {
-        if (stat !in listOf(Stat.Gold, Stat.Faith, Stat.Culture, Stat.Science, Stat.Food))
+        if (stat !in Stat.statsUsableToBuy || construction == null)
             return null
-        val city = cityScreen.city
 
+        val city = cityScreen.city
         val button = "".toTextButton()
 
-        if (construction == null || construction is PerpetualConstruction ||
-                (!construction.canBePurchasedWithStat(city, stat) && !city.civInfo.gameInfo.gameParameters.godMode)) {
-            // fully disable a "buy" button only for "priceless" buildings such as wonders
-            // for all other cases, the price should be displayed
-            if (stat == Stat.Gold) {
-                button.setText("Buy".tr())
-                button.disable()
-            }
-            else return null
+        if (!construction.canBePurchasedWithStat(city, stat) && !city.civInfo.gameInfo.gameParameters.godMode) {
+            // This can't ever be bought with the given currency.
+            // We want one disabled "buy" button without a price for "priceless" buildings such as wonders
+            // We don't want such a button when the construction can be bought using a different currency
+            if (stat != Stat.Gold || construction.canBePurchasedWithAnyStat(city))
+                return null
+            button.setText("Buy".tr())
+            button.disable()
         } else {
             val constructionBuyCost = construction.getStatBuyCost(city, stat)!!
-            button.setText("Buy".tr() + " " + constructionBuyCost)
-            button.add(ImageGetter.getStatIcon(stat.name)).size(20f).padBottom(2f)
+            button.setText("Buy".tr() + " " + constructionBuyCost + stat.character)
 
             button.onClick(stat.purchaseSound) {
                 button.disable()
                 cityScreen.closeAllPopups()
                 
-                val purchasePrompt = "Currently you have [${city.getStatReserve(stat)}] [${stat.name}].".tr() + "\n" +
-                        "Would you like to purchase [${construction.name}] for [$constructionBuyCost] [${stat.name}]?".tr()
-                YesNoPopup(purchasePrompt, { purchaseConstruction(construction, stat) }, cityScreen, { cityScreen.update() }).open()
+                val purchasePrompt = "Currently you have [${city.getStatReserve(stat)}] [${stat.name}].".tr() + "\n\n" +
+                        "Would you like to purchase [${construction.name}] for [$constructionBuyCost] [${stat.character}]?".tr()
+                YesNoPopup(
+                    purchasePrompt,
+                    action = { purchaseConstruction(construction, stat) },
+                    screen = cityScreen,
+                    restoreDefault = { cityScreen.update() }
+                ).apply {
+                    promptLabel.setAlignment(Align.center)
+                    open()
+                }
             }
             
             if (!cityScreen.canChangeState

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

@@ -5,6 +5,7 @@ import com.badlogic.gdx.scenes.scene2d.ui.Table
 import com.unciv.UncivGame
 import com.unciv.logic.map.TileInfo
 import com.unciv.models.UncivSound
+import com.unciv.models.stats.Stat
 import com.unciv.models.stats.Stats
 import com.unciv.models.translations.tr
 import com.unciv.ui.civilopedia.CivilopediaScreen
@@ -47,8 +48,8 @@ class CityScreenTileTable(private val cityScreen: CityScreen): Table() {
 
             val buyTileButton = "Buy for [$goldCostOfTile] gold".toTextButton()
             buyTileButton.onClick(UncivSound.Coin) {
-                val purchasePrompt = "Currently you have [${city.civInfo.gold}] gold.".tr() + "\n" +
-                        "Would you like to purchase [Tile] for [$goldCostOfTile] gold?".tr()
+                val purchasePrompt = "Currently you have [${city.civInfo.gold}] [Gold].".tr() + "\n\n" +
+                        "Would you like to purchase [Tile] for [$goldCostOfTile] [${Stat.Gold.character}]?".tr()
                 YesNoPopup(purchasePrompt, { city.expansion.buyTile(selectedTile);UncivGame.Current.setScreen(CityScreen(city)) }, cityScreen).open()
             }
             val canPurchase = goldCostOfTile == 0 || city.civInfo.gold >= goldCostOfTile

core/src/com/unciv/ui/utils/YesNoPopup.kt

@@ -1,6 +1,7 @@
 package com.unciv.ui.utils
 
 import com.badlogic.gdx.Gdx
+import com.badlogic.gdx.utils.Align
 import com.unciv.Constants
 import com.unciv.UncivGame
 
@@ -11,14 +12,18 @@ import com.unciv.UncivGame
  * @param restoreDefault A lambda to execute when "No" is chosen
  */
 open class YesNoPopup (
-            question:String,
-            action:()->Unit,
+            question: String,
+            action: ()->Unit,
             screen: CameraStageBaseScreen = UncivGame.Current.worldScreen,
-            restoreDefault:()->Unit = {}
+            restoreDefault: ()->Unit = {}
         ) : Popup(screen) {
 
+    /** The [Label][com.badlogic.gdx.scenes.scene2d.ui.Label] created for parameter `question` for optional layout tweaking */
+    val promptLabel = question.toLabel()
+
     init {
-        add(question.toLabel()).colspan(2).row()
+        promptLabel.setAlignment(Align.center)
+        add(promptLabel).colspan(2).row()
         addOKButton(Constants.yes, KeyCharAndCode('y'), action)
         addCloseButton(Constants.no, KeyCharAndCode('n'), restoreDefault)
         equalizeLastTwoButtonWidths()