Add support for '1 free per age' special ability

6 files changed, 84 insertions, 17 deletions

diff --git a/src/main/java/org/luxons/sevenwonders/game/Game.java b/src/main/java/org/luxons/sevenwonders/game/Game.java
index 94bd039a..bc9c3b17 100644
--- a/src/main/java/org/luxons/sevenwonders/game/Game.java
+++ b/src/main/java/org/luxons/sevenwonders/game/Game.java
@@ -15,7 +15,6 @@ import org.luxons.sevenwonders.game.api.Table;
 import org.luxons.sevenwonders.game.boards.Board;
 import org.luxons.sevenwonders.game.cards.Card;
 import org.luxons.sevenwonders.game.cards.Decks;
-import org.luxons.sevenwonders.game.cards.HandRotationDirection;
 import org.luxons.sevenwonders.game.cards.Hands;
 import org.luxons.sevenwonders.game.effects.SpecialAbility;
 import org.luxons.sevenwonders.game.moves.Move;
@@ -41,8 +40,6 @@ public class Game {
 
     private Hands hands;
 
-    private int currentAge = 0;
-
     public Game(long id, Settings settings, List<Player> players, List<Board> boards, Decks decks) {
         this.id = id;
         this.settings = settings;
@@ -67,8 +64,8 @@ public class Game {
     }
 
     private void startNewAge() {
-        currentAge++;
-        hands = decks.deal(currentAge, table.getNbPlayers());
+        table.increaseCurrentAge();
+        hands = decks.deal(table.getCurrentAge(), table.getNbPlayers());
     }
 
     public List<PlayerTurnInfo> getTurnInfo() {
@@ -79,8 +76,6 @@ public class Game {
         PlayerTurnInfo pti = new PlayerTurnInfo(player, table);
         List<HandCard> hand = hands.createHand(table, player.getIndex());
         pti.setHand(hand);
-        pti.setCurrentAge(currentAge);
-        pti.setHandRotationDirection(getHandRotationDirection());
         Action action = determineAction(hand, table.getBoard(player.getIndex()));
         pti.setAction(action);
         pti.setMessage(action.getMessage());
@@ -138,7 +133,7 @@ public class Game {
             }
         } else if (!hands.maxOneCardRemains()) {
             // we don't rotate hands if some player can play his last card (with the special ability)
-            hands.rotate(getHandRotationDirection());
+            hands.rotate(table.getHandRotationDirection());
         }
     }
 
@@ -207,16 +202,11 @@ public class Game {
     }
 
     private void executeEndOfAgeEvents() {
-        table.resolveMilitaryConflicts(currentAge);
-    }
-
-    private HandRotationDirection getHandRotationDirection() {
-        // clockwise at age 1, and alternating
-        return currentAge % 2 == 0 ? HandRotationDirection.LEFT : HandRotationDirection.RIGHT;
+        table.resolveMilitaryConflicts();
     }
 
     private boolean endOfGameReached() {
-        return endOfAgeReached() && currentAge == LAST_AGE;
+        return endOfAgeReached() && table.getCurrentAge() == LAST_AGE;
     }
 
     public ScoreBoard computeScore() {
diff --git a/src/main/java/org/luxons/sevenwonders/game/api/Table.java b/src/main/java/org/luxons/sevenwonders/game/api/Table.java
index a87ea6ae..8b831527 100644
--- a/src/main/java/org/luxons/sevenwonders/game/api/Table.java
+++ b/src/main/java/org/luxons/sevenwonders/game/api/Table.java
@@ -4,6 +4,7 @@ import java.util.List;
 
 import org.luxons.sevenwonders.game.boards.Board;
 import org.luxons.sevenwonders.game.boards.RelativeBoardPosition;
+import org.luxons.sevenwonders.game.cards.HandRotationDirection;
 import org.luxons.sevenwonders.game.moves.Move;
 
 /**
@@ -16,6 +17,8 @@ public class Table {
 
     private final List<Board> boards;
 
+    private int currentAge = 0;
+
     private List<Move> lastPlayedMoves;
 
     public Table(List<Board> boards) {
@@ -47,11 +50,23 @@ public class Table {
         this.lastPlayedMoves = lastPlayedMoves;
     }
 
-    public void resolveMilitaryConflicts(int age) {
+    public int getCurrentAge() {
+        return currentAge;
+    }
+
+    public void increaseCurrentAge() {
+        this.currentAge++;
+    }
+
+    public HandRotationDirection getHandRotationDirection() {
+        return HandRotationDirection.forAge(currentAge);
+    }
+
+    public void resolveMilitaryConflicts() {
         for (int i = 0; i < nbPlayers; i++) {
             Board board1 = getBoard(i);
             Board board2 = getBoard((i + 1) % nbPlayers);
-            resolveConflict(board1, board2, age);
+            resolveConflict(board1, board2, currentAge);
         }
     }
 
diff --git a/src/main/java/org/luxons/sevenwonders/game/boards/Board.java b/src/main/java/org/luxons/sevenwonders/game/boards/Board.java
index 31bb6c9f..ab557d38 100644
--- a/src/main/java/org/luxons/sevenwonders/game/boards/Board.java
+++ b/src/main/java/org/luxons/sevenwonders/game/boards/Board.java
@@ -2,7 +2,9 @@ package org.luxons.sevenwonders.game.boards;
 
 import java.util.ArrayList;
 import java.util.EnumSet;
+import java.util.HashMap;
 import java.util.List;
+import java.util.Map;
 import java.util.Set;
 
 import org.luxons.sevenwonders.game.Player;
@@ -35,6 +37,8 @@ public class Board {
 
     private final Set<SpecialAbility> specialAbilities = EnumSet.noneOf(SpecialAbility.class);
 
+    private Map<Integer, Boolean> consumedFreeCards = new HashMap<>();
+
     private Card copiedGuild;
 
     private int gold;
@@ -118,6 +122,14 @@ public class Board {
         return specialAbilities.contains(specialAbility);
     }
 
+    public boolean canPlayFreeCard(int age) {
+        return hasSpecial(SpecialAbility.ONE_FREE_PER_AGE) && !consumedFreeCards.getOrDefault(age, false);
+    }
+
+    public void consumeFreeCard(int age) {
+        consumedFreeCards.put(age, true);
+    }
+
     public void setCopiedGuild(Card copiedGuild) {
         if (copiedGuild.getColor() != Color.PURPLE) {
             throw new IllegalArgumentException("The given card '" + copiedGuild + "' is not a Guild card");
diff --git a/src/main/java/org/luxons/sevenwonders/game/cards/HandRotationDirection.java b/src/main/java/org/luxons/sevenwonders/game/cards/HandRotationDirection.java
index 2055ea4e..4d33a8db 100644
--- a/src/main/java/org/luxons/sevenwonders/game/cards/HandRotationDirection.java
+++ b/src/main/java/org/luxons/sevenwonders/game/cards/HandRotationDirection.java
@@ -12,4 +12,9 @@ public enum HandRotationDirection {
     public int getIndexOffset() {
         return indexOffset;
     }
+
+    public static HandRotationDirection forAge(int age) {
+        // clockwise at age 1, and alternating
+        return age % 2 == 0 ? HandRotationDirection.LEFT : HandRotationDirection.RIGHT;
+    }
 }
diff --git a/src/main/java/org/luxons/sevenwonders/game/moves/MoveType.java b/src/main/java/org/luxons/sevenwonders/game/moves/MoveType.java
index 4887c6f1..bf64344d 100644
--- a/src/main/java/org/luxons/sevenwonders/game/moves/MoveType.java
+++ b/src/main/java/org/luxons/sevenwonders/game/moves/MoveType.java
@@ -10,6 +10,12 @@ public enum MoveType {
             return new PlayCardMove(playerIndex, card, move);
         }
     },
+    PLAY_FREE {
+        @Override
+        public Move resolve(int playerIndex, Card card, PlayerMove move) {
+            return new PlayFreeCardMove(playerIndex, card, move);
+        }
+    },
     UPGRADE_WONDER {
         @Override
         public Move resolve(int playerIndex, Card card, PlayerMove move) {
diff --git a/src/main/java/org/luxons/sevenwonders/game/moves/PlayFreeCardMove.java b/src/main/java/org/luxons/sevenwonders/game/moves/PlayFreeCardMove.java
new file mode 100644
index 00000000..fb28b09c
--- /dev/null
+++ b/src/main/java/org/luxons/sevenwonders/game/moves/PlayFreeCardMove.java
@@ -0,0 +1,39 @@
+package org.luxons.sevenwonders.game.moves;
+
+import java.util.List;
+
+import org.luxons.sevenwonders.game.Settings;
+import org.luxons.sevenwonders.game.api.PlayerMove;
+import org.luxons.sevenwonders.game.api.Table;
+import org.luxons.sevenwonders.game.boards.Board;
+import org.luxons.sevenwonders.game.cards.Card;
+
+public class PlayFreeCardMove extends CardFromHandMove {
+
+    PlayFreeCardMove(int playerIndex, Card card, PlayerMove move) {
+        super(playerIndex, card, move);
+    }
+
+    @Override
+    public boolean isValid(Table table, List<Card> playerHand) {
+        if (!super.isValid(table, playerHand)) {
+            return false;
+        }
+        Board board = table.getBoard(getPlayerIndex());
+        return board.canPlayFreeCard(table.getCurrentAge());
+    }
+
+    @Override
+    public void place(Table table, List<Card> discardedCards, Settings settings) {
+        Board board = table.getBoard(getPlayerIndex());
+        board.addCard(getCard());
+    }
+
+    @Override
+    public void activate(Table table, List<Card> discardedCards, Settings settings) {
+        // only apply effects, without paying the cost
+        getCard().getEffects().forEach(e -> e.apply(table, getPlayerIndex()));
+        Board board = table.getBoard(getPlayerIndex());
+        board.consumeFreeCard(table.getCurrentAge());
+    }
+}