Adding resign function for multiplayer (#3567)

* Adding give up function for multiplayer

* Update template.properties

* Reviewed changes

- Changed "give up" to "resign"
- Removed unnecessary and harmful translations
- Using YesNoPopup now

* Add missing space

* fixed first AI turn getting skipped

android/assets/jsons/translations/template.properties

@@ -303,6 +303,10 @@ Add Currently Running Game =
 Game name = 
 Loading latest game state... = 
 Couldn't download the latest game state! = 
+Resign = 
+Are you sure you want to resign? = 
+You can only resign if it's your turn = 
+[civName] resigned and is now controlled by AI = 
 
 # Save game menu
 

core/src/com/unciv/logic/GameInfo.kt

@@ -103,7 +103,12 @@ class GameInfo {
             thisPlayer.startTurn()
         }
 
-        switchTurn()
+        //check is important or else switchTurn
+        //would skip a turn if an AI civ calls nextTurn
+        //this happens when resigning a multiplayer game
+        if (thisPlayer.isPlayerCivilization()){
+            switchTurn()
+        }
 
         while (thisPlayer.playerType == PlayerType.AI
                 || turns < UncivGame.Current.simulateUntilTurnForDebug

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

@@ -9,6 +9,7 @@ import com.unciv.logic.GameInfo
 import com.unciv.logic.GameSaver
 import com.unciv.logic.IdChecker
 import com.unciv.logic.UncivShowableException
+import com.unciv.logic.civilization.PlayerType
 import com.unciv.models.translations.tr
 import com.unciv.ui.pickerscreens.PickerScreen
 import com.unciv.ui.utils.*
@@ -379,9 +380,6 @@ class EditMultiplayerGameInfoScreen(game: GameInfo, gameName: String, backScreen
         topTable.add("Rename".toLabel()).row()
         topTable.add(textField).pad(10f).padBottom(30f).width(stage.width/2).row()
 
-        //TODO Change delete to "give up"
-            //->turn a player into an AI so everyone can still play without the user
-                //->should only be possible on the users turn because it has to be uploaded afterwards
         val deleteButton = "Delete save".toTextButton()
         deleteButton.onClick {
             val askPopup = Popup(this)
@@ -402,7 +400,17 @@ class EditMultiplayerGameInfoScreen(game: GameInfo, gameName: String, backScreen
             askPopup.open()
         }.apply { color = Color.RED }
 
-        topTable.add(deleteButton)
+        val giveUpButton = "Resign".toTextButton()
+        giveUpButton.onClick {
+            val askPopup = YesNoPopup("Are you sure you want to resign?", {
+                        giveUp(game.gameId, gameName, backScreen)
+                    }, this)
+            askPopup.open()
+        }
+        giveUpButton.apply { color = Color.RED }
+
+        topTable.add(deleteButton).pad(10f).row()
+        topTable.add(giveUpButton)
 
         //CloseButton Setup
         closeButton.setText("Back".tr())
@@ -431,6 +439,66 @@ class EditMultiplayerGameInfoScreen(game: GameInfo, gameName: String, backScreen
             }
         }
     }
+
+    /**
+     * Helper function to decrease indentation
+     * Turns the current playerCiv into an AI civ and uploads the game afterwards.
+     */
+    private fun giveUp(gameId: String, gameName: String, backScreen: MultiplayerScreen){
+        //Create a popup
+        val popup = Popup(this)
+        popup.addGoodSizedLabel("Working...").row()
+        popup.open()
+
+        thread {
+            try {
+                //download to work with newest game state
+                val gameInfo = OnlineMultiplayer().tryDownloadGame(gameId)
+                val playerCiv = gameInfo.currentPlayerCiv
+
+                //only give up if it's the users turn
+                //this ensures that no one can upload a newer game state while we try to give up
+                if (playerCiv.playerId == game.settings.userId){
+                    //Set own civ info to AI
+                    playerCiv.playerType = PlayerType.AI
+                    playerCiv.playerId = ""
+
+                    //call next turn so turn gets simulated by AI
+                    gameInfo.nextTurn()
+
+                    //Add notification so everyone knows what happened
+                    //call for every civ cause AI players are skipped anyway
+                    for (civ in gameInfo.civilizations){
+                        civ.addNotification("[${playerCiv.civName}] resigned and is now controlled by AI", Color.RED)
+                    }
+
+                    //save game so multiplayer list stays up to date
+                    GameSaver.saveGame(gameInfo, gameName, true)
+                    OnlineMultiplayer().tryUploadGame(gameInfo)
+                    Gdx.app.postRunnable {
+                        popup.close()
+                        //go back to the MultiplayerScreen
+                        backScreen.game.setScreen(backScreen)
+                        backScreen.reloadGameListUI()
+                    }
+                } else {
+                    Gdx.app.postRunnable {
+                        //change popup text
+                        popup.innerTable.clear()
+                        popup.addGoodSizedLabel("You can only resign if it's your turn").row()
+                        popup.addCloseButton()
+                    }
+                }
+            } catch (ex: Exception) {
+                Gdx.app.postRunnable {
+                    //change popup text
+                    popup.innerTable.clear()
+                    popup.addGoodSizedLabel("Could not upload game!").row()
+                    popup.addCloseButton()
+                }
+            }
+        }
+    }
 }
 
 class AddMultiplayerGameScreen(backScreen: MultiplayerScreen) : PickerScreen(){