feat: TicTacToe interaction

backend/src/main/java/cz/jzitnik/chronos/interactions/Interaction.java

@@ -3,5 +3,6 @@ package cz.jzitnik.chronos.interactions;
 public enum Interaction {
     Farmer,
     Cashier,
-    Librarian
+    Librarian,
+    Innkeeper,
 }

backend/src/main/java/cz/jzitnik/chronos/interactions/InteractionService.java

@@ -4,6 +4,7 @@ import cz.jzitnik.chronos.entities.Player;
 import cz.jzitnik.chronos.entities.Character;
 import cz.jzitnik.chronos.interactions.list.Hangman;
 import cz.jzitnik.chronos.interactions.list.RockPaperScissors;
+import cz.jzitnik.chronos.interactions.list.TicTacToe;
 import cz.jzitnik.chronos.interactions.list.wordle.Wordle;
 import cz.jzitnik.chronos.payload.responses.InteractionResponse;
 import org.springframework.beans.factory.annotation.Autowired;
@@ -17,6 +18,8 @@ public class InteractionService {
     private Hangman hangman;
     @Autowired
     private Wordle wordle;
+    @Autowired
+    private TicTacToe ticTacToe;
 
     @FunctionalInterface
     public interface Function3<T, U, V, W> {
@@ -28,6 +31,7 @@ public class InteractionService {
             case Farmer -> rockPaperScissors::play;
             case Cashier -> hangman::play;
             case Librarian -> wordle::play;
+            case Innkeeper -> ticTacToe::play;
         };
     }
 }

backend/src/main/java/cz/jzitnik/chronos/interactions/list/TicTacToe.java

@@ -0,0 +1,213 @@
+package cz.jzitnik.chronos.interactions.list;
+
+import com.fasterxml.jackson.core.JsonProcessingException;
+import com.fasterxml.jackson.databind.ObjectMapper;
+import cz.jzitnik.chronos.entities.Character;
+import cz.jzitnik.chronos.entities.Item;
+import cz.jzitnik.chronos.entities.ItemType;
+import cz.jzitnik.chronos.entities.Player;
+import cz.jzitnik.chronos.interactions.InteractionPlayer;
+import cz.jzitnik.chronos.payload.responses.InteractionResponse;
+import cz.jzitnik.chronos.repository.CharacterRepository;
+import cz.jzitnik.chronos.services.ItemService;
+import lombok.AllArgsConstructor;
+import lombok.Getter;
+import lombok.NoArgsConstructor;
+import lombok.Setter;
+import org.springframework.beans.factory.annotation.Autowired;
+import org.springframework.stereotype.Service;
+
+import java.util.ArrayList;
+import java.util.Random;
+
+@Service
+public class TicTacToe implements InteractionPlayer {
+    @Autowired
+    private CharacterRepository characterRepository;
+    @Autowired
+    private ItemService itemService;
+
+    @AllArgsConstructor
+    @NoArgsConstructor
+    @Getter
+    @Setter
+    private static class TicTacToeMemory {
+        private String[] board;
+        private boolean playerTurn;
+    }
+
+    private static TicTacToeMemory readMemory(String memory) {
+        ObjectMapper objectMapper = new ObjectMapper();
+        try {
+            return objectMapper.readValue(memory, TicTacToeMemory.class);
+        } catch (Exception e) {
+            throw new RuntimeException("Error reading memory.");
+        }
+    }
+
+    private static String writeMemory(TicTacToeMemory memory) {
+        ObjectMapper objectMapper = new ObjectMapper();
+        try {
+            return objectMapper.writeValueAsString(memory);
+        } catch (JsonProcessingException e) {
+            throw new RuntimeException(e);
+        }
+    }
+
+    @AllArgsConstructor
+    @Getter
+    @Setter
+    private static class TicTacToeResponse {
+        public enum Type {
+            GAME_CREATED,
+            GAME_WON,
+            GAME_TIED,
+            GAME_CONTINUE,
+        }
+
+        private Type type;
+        private String[] board;
+        private boolean playerTurn;
+    }
+
+    @Override
+    public InteractionResponse play(Player player, Character character, String data) {
+        if (character.getInteractionData().getPlayer() == null) {
+            try {
+                return initGame(player, character);
+            } catch (JsonProcessingException e) {
+                throw new RuntimeException(e);
+            }
+        }
+
+        if (!character.getInteractionData().getPlayer().getId().equals(player.getId())) {
+            return new InteractionResponse(false, "already_playing", new ArrayList<>());
+        }
+
+        try {
+            return makeMove(player, character, data);
+        } catch (JsonProcessingException e) {
+            throw new RuntimeException(e);
+        }
+    }
+
+    private InteractionResponse initGame(Player player, Character character) throws JsonProcessingException {
+        var interactionData = character.getInteractionData();
+        interactionData.setPlayer(player);
+
+        String[] board = new String[9];
+        for (int i = 0; i < 9; i++) {
+            board[i] = "_";
+        }
+
+        interactionData.setMemory(writeMemory(new TicTacToeMemory(board, true)));
+
+        characterRepository.save(character);
+
+        var response = new TicTacToeResponse(TicTacToeResponse.Type.GAME_CREATED, board, true);
+        ObjectMapper objectMapper = new ObjectMapper();
+
+        return new InteractionResponse(true, objectMapper.writeValueAsString(response), new ArrayList<>());
+    }
+
+    private InteractionResponse makeMove(Player player, Character character, String data) throws JsonProcessingException {
+        TicTacToeMemory gameMemory = readMemory(character.getInteractionData().getMemory());
+        String[] board = gameMemory.getBoard();
+        boolean playerTurn = gameMemory.isPlayerTurn();
+
+        if (data.equals("get_data")) {
+            var response = new TicTacToeResponse(TicTacToeResponse.Type.GAME_CONTINUE, board, playerTurn);
+            ObjectMapper objectMapper = new ObjectMapper();
+            return new InteractionResponse(false, objectMapper.writeValueAsString(response), new ArrayList<>());
+        }
+
+        if (playerTurn) {
+            int move = Integer.parseInt(data);
+            if (move < 0 || move > 8 || !board[move].equals("_")) {
+                return new InteractionResponse(false, "invalid_move", new ArrayList<>());
+            }
+
+            board[move] = "O";
+            if (checkWin(board, "O")) {
+                return gameOver(character, TicTacToeResponse.Type.GAME_WON, board);
+            } else if (isBoardFull(board)) {
+                return gameOver(character, TicTacToeResponse.Type.GAME_TIED, board);
+            } else {
+                gameMemory.setPlayerTurn(false);
+                character.getInteractionData().setMemory(writeMemory(gameMemory));
+                characterRepository.save(character);
+                return computerMove(player, character, board);
+            }
+        }
+
+        return new InteractionResponse(false, "not_your_turn", new ArrayList<>());
+    }
+
+    private InteractionResponse computerMove(Player player, Character character, String[] board) throws JsonProcessingException {
+        Random random = new Random();
+        int move;
+        do {
+            move = random.nextInt(9);
+        } while (!board[move].equals("_"));
+
+        board[move] = "X";
+        if (checkWin(board, "X")) {
+            return gameOver(character, TicTacToeResponse.Type.GAME_WON, board);
+        } else if (isBoardFull(board)) {
+            return gameOver(character, TicTacToeResponse.Type.GAME_TIED, board);
+        }
+
+        TicTacToeMemory gameMemory = readMemory(character.getInteractionData().getMemory());
+        gameMemory.setPlayerTurn(true);
+        gameMemory.setBoard(board);
+        character.getInteractionData().setMemory(writeMemory(gameMemory));
+        characterRepository.save(character);
+
+        var response = new TicTacToeResponse(TicTacToeResponse.Type.GAME_CONTINUE, board, true);
+        ObjectMapper objectMapper = new ObjectMapper();
+        return new InteractionResponse(false, objectMapper.writeValueAsString(response), new ArrayList<>());
+    }
+
+    private boolean checkWin(String[] board, String player) {
+        String[][] winPatterns = {
+                { "0", "1", "2" }, { "3", "4", "5" }, { "6", "7", "8" }, // rows
+                { "0", "3", "6" }, { "1", "4", "7" }, { "2", "5", "8" }, // columns
+                { "0", "4", "8" }, { "2", "4", "6" } // diagonals
+        };
+
+        for (String[] pattern : winPatterns) {
+            if (board[Integer.parseInt(pattern[0])].equals(player) &&
+                    board[Integer.parseInt(pattern[1])].equals(player) &&
+                    board[Integer.parseInt(pattern[2])].equals(player)) {
+                return true;
+            }
+        }
+
+        return false;
+    }
+
+    private boolean isBoardFull(String[] board) {
+        for (String cell : board) {
+            if (cell.equals("_")) {
+                return false;
+            }
+        }
+        return true;
+    }
+
+    private InteractionResponse gameOver(Character character, TicTacToeResponse.Type type, String[] board) throws JsonProcessingException {
+        if (type != TicTacToeResponse.Type.GAME_TIED) {
+            character.setInteractedWith(true);
+            characterRepository.save(character);
+        }
+
+        if (type == TicTacToeResponse.Type.GAME_WON) {
+            var item = new Item(ItemType.KEY_FRAGMENT, character.getInteractionData().getPlayer());
+            itemService.addItem(character.getInteractionData().getPlayer(), item);
+        }
+
+        var response = new TicTacToeResponse(type, board, false);
+        ObjectMapper objectMapper = new ObjectMapper();
+        return new InteractionResponse(true, objectMapper.writeValueAsString(response), new ArrayList<>());
+    }
+}

backend/src/main/java/cz/jzitnik/chronos/services/InitGameService.java

@@ -89,11 +89,32 @@ public class InitGameService {
         library_characters.add(librarian);
         library.setCharacters(library_characters);
 
+        // Hospoda
+        var inn = new Room(
+                "Hospoda",
+                game
+        );
+        var inn_characters = new ArrayList<Character>();
+        var innkeeper = new Character(
+                "Hostinský",
+                inn,
+                "Ahoj já jsem hostinský a budeš se mnou hrát piškvorky."
+        );
+        innkeeper.setInteraction(Interaction.Innkeeper);
+        innkeeper.setInteractionData(new cz.jzitnik.chronos.entities.Interaction(
+                "Tak si zahrajeme piškvorky.",
+                "Se mnou někdo již hrál piškvorky. Další fragment klíče nemám.",
+                innkeeper
+        ));
+        inn_characters.add(innkeeper);
+        inn.setCharacters(inn_characters);
+
 
         rooms.add(outside);
         rooms.add(stodola);
         rooms.add(shop);
         rooms.add(library);
+        rooms.add(inn);
 
         game.setRooms(rooms);