Kotlin mig: game definitions

43 files changed, 633 insertions, 850 deletions

diff --git a/backend/src/test/java/org/luxons/sevenwonders/controllers/LobbyControllerTest.java b/backend/src/test/java/org/luxons/sevenwonders/controllers/LobbyControllerTest.java
index 567cd654..2da7e3c1 100644
--- a/backend/src/test/java/org/luxons/sevenwonders/controllers/LobbyControllerTest.java
+++ b/backend/src/test/java/org/luxons/sevenwonders/controllers/LobbyControllerTest.java
@@ -27,7 +27,7 @@ import static org.junit.Assert.assertFalse;
 import static org.junit.Assert.assertNull;
 import static org.junit.Assert.assertSame;
 import static org.junit.Assert.assertTrue;
-import static org.luxons.sevenwonders.game.data.definitions.WonderSidePickMethod.ALL_A;
+import static org.luxons.sevenwonders.game.data.WonderSidePickMethod.ALL_A;
 
 public class LobbyControllerTest {
 
diff --git a/game-engine/build.gradle b/game-engine/build.gradle
index 5a3cc4ea..97067176 100644
--- a/game-engine/build.gradle
+++ b/game-engine/build.gradle
@@ -16,11 +16,11 @@ configurations {
 }
 
 dependencies {
-    implementation "org.jetbrains.kotlin:kotlin-stdlib-jdk8"
-    implementation 'com.google.code.gson:gson:2.8.0'
+    implementation 'org.jetbrains.kotlin:kotlin-stdlib-jdk8'
+    implementation 'com.github.salomonbrys.kotson:kotson:2.5.0'
     testImplementation 'junit:junit:4.12'
-    checkstyleConfig "org.hildan.checkstyle:checkstyle-config:2.1.0"
-    ktlint "com.github.shyiko:ktlint:0.24.0"
+    checkstyleConfig 'org.hildan.checkstyle:checkstyle-config:2.1.0'
+    ktlint 'com.github.shyiko:ktlint:0.24.0'
 }
 
 checkstyle {
diff --git a/game-engine/src/main/java/org/luxons/sevenwonders/game/data/GameDefinition.java b/game-engine/src/main/java/org/luxons/sevenwonders/game/data/GameDefinition.java
deleted file mode 100644
index 0402a26d..00000000
--- a/game-engine/src/main/java/org/luxons/sevenwonders/game/data/GameDefinition.java
+++ /dev/null
@@ -1,59 +0,0 @@
-package org.luxons.sevenwonders.game.data;
-
-import java.util.ArrayList;
-import java.util.Arrays;
-import java.util.Collections;
-import java.util.List;
-
-import org.luxons.sevenwonders.game.Game;
-import org.luxons.sevenwonders.game.Settings;
-import org.luxons.sevenwonders.game.api.CustomizableSettings;
-import org.luxons.sevenwonders.game.boards.Board;
-import org.luxons.sevenwonders.game.cards.Decks;
-import org.luxons.sevenwonders.game.data.definitions.DecksDefinition;
-import org.luxons.sevenwonders.game.data.definitions.WonderDefinition;
-import org.luxons.sevenwonders.game.wonders.Wonder;
-
-public class GameDefinition {
-
-    private final GlobalRules rules;
-
-    private final WonderDefinition[] wonders;
-
-    private final DecksDefinition decksDefinition;
-
-    GameDefinition(GlobalRules rules, WonderDefinition[] wonders, DecksDefinition decksDefinition) {
-        this.rules = rules;
-        this.wonders = wonders;
-        this.decksDefinition = decksDefinition;
-    }
-
-    public int getMinPlayers() {
-        return rules.getMinPlayers();
-    }
-
-    public int getMaxPlayers() {
-        return rules.getMaxPlayers();
-    }
-
-    public Game initGame(long id, CustomizableSettings customSettings, int nbPlayers) {
-        Settings settings = new Settings(nbPlayers, customSettings);
-        List<Board> boards = assignBoards(settings, nbPlayers);
-        Decks decks = decksDefinition.create(settings);
-        return new Game(id, settings, nbPlayers, boards, decks);
-    }
-
-    private List<Board> assignBoards(Settings settings, int nbPlayers) {
-        List<WonderDefinition> randomizedWonders = Arrays.asList(wonders);
-        Collections.shuffle(randomizedWonders, settings.getRandom());
-
-        List<Board> boards = new ArrayList<>(nbPlayers);
-        for (int i = 0; i < nbPlayers; i++) {
-            WonderDefinition def = randomizedWonders.get(i);
-            Wonder w = def.create(settings);
-            Board b = new Board(w, i, settings);
-            boards.add(b);
-        }
-        return boards;
-    }
-}
diff --git a/game-engine/src/main/java/org/luxons/sevenwonders/game/data/GameDefinitionLoader.java b/game-engine/src/main/java/org/luxons/sevenwonders/game/data/GameDefinitionLoader.java
deleted file mode 100644
index a1bd7b8d..00000000
--- a/game-engine/src/main/java/org/luxons/sevenwonders/game/data/GameDefinitionLoader.java
+++ /dev/null
@@ -1,91 +0,0 @@
-package org.luxons.sevenwonders.game.data;
-
-import java.io.BufferedReader;
-import java.io.InputStream;
-import java.io.InputStreamReader;
-import java.io.Reader;
-import java.lang.reflect.Type;
-import java.util.List;
-
-import org.luxons.sevenwonders.game.data.definitions.DecksDefinition;
-import org.luxons.sevenwonders.game.data.definitions.WonderDefinition;
-import org.luxons.sevenwonders.game.data.serializers.NumericEffectSerializer;
-import org.luxons.sevenwonders.game.data.serializers.ProductionIncreaseSerializer;
-import org.luxons.sevenwonders.game.data.serializers.ProductionSerializer;
-import org.luxons.sevenwonders.game.data.serializers.ResourceTypeSerializer;
-import org.luxons.sevenwonders.game.data.serializers.ResourceTypesSerializer;
-import org.luxons.sevenwonders.game.data.serializers.ResourcesSerializer;
-import org.luxons.sevenwonders.game.data.serializers.ScienceProgressSerializer;
-import org.luxons.sevenwonders.game.effects.GoldIncrease;
-import org.luxons.sevenwonders.game.effects.MilitaryReinforcements;
-import org.luxons.sevenwonders.game.effects.ProductionIncrease;
-import org.luxons.sevenwonders.game.effects.RawPointsIncrease;
-import org.luxons.sevenwonders.game.effects.ScienceProgress;
-import org.luxons.sevenwonders.game.resources.Production;
-import org.luxons.sevenwonders.game.resources.ResourceType;
-import org.luxons.sevenwonders.game.resources.Resources;
-
-import com.google.gson.Gson;
-import com.google.gson.GsonBuilder;
-import com.google.gson.reflect.TypeToken;
-
-public class GameDefinitionLoader {
-
-    private static final String BASE_PACKAGE = GameDefinitionLoader.class.getPackage().getName();
-
-    private static final String BASE_PACKAGE_PATH = '/' + BASE_PACKAGE.replace('.', '/');
-
-    private static final String GLOBAL_RULES_FILE = "global_rules.json";
-
-    private static final String CARDS_FILE = "cards.json";
-
-    private static final String WONDERS_FILE = "wonders.json";
-
-    private final GameDefinition gameDefinition;
-
-    public GameDefinitionLoader() {
-        gameDefinition = load();
-    }
-
-    public GameDefinition getGameDefinition() {
-        return gameDefinition;
-    }
-
-    private static GameDefinition load() {
-        return new GameDefinition(loadGlobalRules(), loadWonders(), loadDecks());
-    }
-
-    private static GlobalRules loadGlobalRules() {
-        return readJsonFile(GLOBAL_RULES_FILE, GlobalRules.class);
-    }
-
-    private static WonderDefinition[] loadWonders() {
-        return readJsonFile(WONDERS_FILE, WonderDefinition[].class);
-    }
-
-    private static DecksDefinition loadDecks() {
-        return readJsonFile(CARDS_FILE, DecksDefinition.class);
-    }
-
-    private static <T> T readJsonFile(String filename, Class<T> clazz) {
-        InputStream in = GameDefinitionLoader.class.getResourceAsStream(BASE_PACKAGE_PATH + '/' + filename);
-        Reader reader = new BufferedReader(new InputStreamReader(in));
-        Gson gson = createGson();
-        return gson.fromJson(reader, clazz);
-    }
-
-    private static Gson createGson() {
-        Type resourceTypeList = new TypeToken<List<ResourceType>>() {}.getType();
-        return new GsonBuilder().disableHtmlEscaping()
-                                .registerTypeAdapter(Resources.class, new ResourcesSerializer())
-                                .registerTypeAdapter(ResourceType.class, new ResourceTypeSerializer())
-                                .registerTypeAdapter(resourceTypeList, new ResourceTypesSerializer())
-                                .registerTypeAdapter(Production.class, new ProductionSerializer())
-                                .registerTypeAdapter(ProductionIncrease.class, new ProductionIncreaseSerializer())
-                                .registerTypeAdapter(MilitaryReinforcements.class, new NumericEffectSerializer())
-                                .registerTypeAdapter(RawPointsIncrease.class, new NumericEffectSerializer())
-                                .registerTypeAdapter(GoldIncrease.class, new NumericEffectSerializer())
-                                .registerTypeAdapter(ScienceProgress.class, new ScienceProgressSerializer())
-                                .create();
-    }
-}
diff --git a/game-engine/src/main/java/org/luxons/sevenwonders/game/data/GlobalRules.java b/game-engine/src/main/java/org/luxons/sevenwonders/game/data/GlobalRules.java
deleted file mode 100644
index 526bebad..00000000
--- a/game-engine/src/main/java/org/luxons/sevenwonders/game/data/GlobalRules.java
+++ /dev/null
@@ -1,17 +0,0 @@
-package org.luxons.sevenwonders.game.data;
-
-@SuppressWarnings("unused") // fields are set by Gson
-class GlobalRules {
-
-    private int minPlayers;
-
-    private int maxPlayers;
-
-    int getMinPlayers() {
-        return minPlayers;
-    }
-
-    int getMaxPlayers() {
-        return maxPlayers;
-    }
-}
diff --git a/game-engine/src/main/java/org/luxons/sevenwonders/game/data/definitions/CardDefinition.java b/game-engine/src/main/java/org/luxons/sevenwonders/game/data/definitions/CardDefinition.java
deleted file mode 100644
index 621bed2c..00000000
--- a/game-engine/src/main/java/org/luxons/sevenwonders/game/data/definitions/CardDefinition.java
+++ /dev/null
@@ -1,38 +0,0 @@
-package org.luxons.sevenwonders.game.data.definitions;
-
-import java.util.List;
-import java.util.Map;
-
-import org.luxons.sevenwonders.game.Settings;
-import org.luxons.sevenwonders.game.cards.Card;
-import org.luxons.sevenwonders.game.cards.Color;
-import org.luxons.sevenwonders.game.cards.Requirements;
-
-@SuppressWarnings("unused") // the fields are injected by Gson
-public class CardDefinition implements Definition<Card> {
-
-    private String name;
-
-    private Color color;
-
-    private Requirements requirements;
-
-    private EffectsDefinition effect;
-
-    private String chainParent;
-
-    private List<String> chainChildren;
-
-    private Map<Integer, Integer> countPerNbPlayer;
-
-    private String image;
-
-    @Override
-    public Card create(Settings settings) {
-        return new Card(name, color, requirements, effect.create(settings), chainParent, chainChildren, image);
-    }
-
-    Map<Integer, Integer> getCountPerNbPlayer() {
-        return countPerNbPlayer;
-    }
-}
diff --git a/game-engine/src/main/java/org/luxons/sevenwonders/game/data/definitions/DecksDefinition.java b/game-engine/src/main/java/org/luxons/sevenwonders/game/data/definitions/DecksDefinition.java
deleted file mode 100644
index 6f97e55f..00000000
--- a/game-engine/src/main/java/org/luxons/sevenwonders/game/data/definitions/DecksDefinition.java
+++ /dev/null
@@ -1,76 +0,0 @@
-package org.luxons.sevenwonders.game.data.definitions;
-
-import java.util.ArrayList;
-import java.util.Collections;
-import java.util.HashMap;
-import java.util.List;
-import java.util.Map;
-import java.util.stream.Collectors;
-
-import org.luxons.sevenwonders.game.Settings;
-import org.luxons.sevenwonders.game.cards.Card;
-import org.luxons.sevenwonders.game.cards.CardBack;
-import org.luxons.sevenwonders.game.cards.Decks;
-
-@SuppressWarnings("unused,MismatchedQueryAndUpdateOfCollection") // the fields are injected by Gson
-public class DecksDefinition implements Definition<Decks> {
-
-    private List<CardDefinition> age1;
-
-    private List<CardDefinition> age2;
-
-    private List<CardDefinition> age3;
-
-    private String age1Back;
-
-    private String age2Back;
-
-    private String age3Back;
-
-    private List<CardDefinition> guildCards;
-
-    @Override
-    public Decks create(Settings settings) {
-        Map<Integer, List<Card>> cardsPerAge = new HashMap<>();
-        cardsPerAge.put(1, prepareStandardDeck(age1, settings, age1Back));
-        cardsPerAge.put(2, prepareStandardDeck(age2, settings, age2Back));
-        cardsPerAge.put(3, prepareAge3Deck(settings));
-        return new Decks(cardsPerAge);
-    }
-
-    private static List<Card> prepareStandardDeck(List<CardDefinition> defs, Settings settings, String backImage) {
-        CardBack back = new CardBack(backImage);
-        List<Card> cards = createDeck(defs, settings, back);
-        Collections.shuffle(cards, settings.getRandom());
-        return cards;
-    }
-
-    private List<Card> prepareAge3Deck(Settings settings) {
-        CardBack back = new CardBack(age3Back);
-        List<Card> age3deck = createDeck(age3, settings, back);
-        age3deck.addAll(createGuildCards(settings, back));
-        Collections.shuffle(age3deck, settings.getRandom());
-        return age3deck;
-    }
-
-    private static List<Card> createDeck(List<CardDefinition> defs, Settings settings, CardBack back) {
-        List<Card> cards = new ArrayList<>();
-        for (CardDefinition def : defs) {
-            for (int i = 0; i < def.getCountPerNbPlayer().get(settings.getNbPlayers()); i++) {
-                Card card = def.create(settings);
-                card.setBack(back);
-                cards.add(card);
-            }
-        }
-        return cards;
-    }
-
-    private List<Card> createGuildCards(Settings settings, CardBack back) {
-        List<Card> guild = guildCards.stream()
-                                     .map((def) -> def.create(settings))
-                                     .peek(c -> c.setBack(back))
-                                     .collect(Collectors.toList());
-        Collections.shuffle(guild, settings.getRandom());
-        return guild.subList(0, settings.getNbPlayers() + 2);
-    }
-}
diff --git a/game-engine/src/main/java/org/luxons/sevenwonders/game/data/definitions/Definition.java b/game-engine/src/main/java/org/luxons/sevenwonders/game/data/definitions/Definition.java
deleted file mode 100644
index 6c6b4b19..00000000
--- a/game-engine/src/main/java/org/luxons/sevenwonders/game/data/definitions/Definition.java
+++ /dev/null
@@ -1,24 +0,0 @@
-package org.luxons.sevenwonders.game.data.definitions;
-
-import org.luxons.sevenwonders.game.Settings;
-
-/**
- * Represents a deserialized JSON definition of some data about the game. It is settings-agnostic. An instance of
- * in-game data can be generated from this, given specific game settings.
- *
- * @param <T>
- *         the type of in-game object that can be generated from this definition
- */
-public interface Definition<T> {
-
-    /**
-     * Creates a T object from the given settings. This method mustn't mutate this Definition as it may be called
-     * multiple times with different settings.
-     *
-     * @param settings
-     *         the game settings to use to generate a game-specific object from this definition
-     *
-     * @return the new game-specific object created from this definition
-     */
-    T create(Settings settings);
-}
diff --git a/game-engine/src/main/java/org/luxons/sevenwonders/game/data/definitions/EffectsDefinition.java b/game-engine/src/main/java/org/luxons/sevenwonders/game/data/definitions/EffectsDefinition.java
deleted file mode 100644
index e35463d4..00000000
--- a/game-engine/src/main/java/org/luxons/sevenwonders/game/data/definitions/EffectsDefinition.java
+++ /dev/null
@@ -1,66 +0,0 @@
-package org.luxons.sevenwonders.game.data.definitions;
-
-import java.util.ArrayList;
-import java.util.List;
-
-import org.luxons.sevenwonders.game.Settings;
-import org.luxons.sevenwonders.game.effects.BonusPerBoardElement;
-import org.luxons.sevenwonders.game.effects.Discount;
-import org.luxons.sevenwonders.game.effects.Effect;
-import org.luxons.sevenwonders.game.effects.GoldIncrease;
-import org.luxons.sevenwonders.game.effects.MilitaryReinforcements;
-import org.luxons.sevenwonders.game.effects.ProductionIncrease;
-import org.luxons.sevenwonders.game.effects.RawPointsIncrease;
-import org.luxons.sevenwonders.game.effects.ScienceProgress;
-import org.luxons.sevenwonders.game.effects.SpecialAbility;
-import org.luxons.sevenwonders.game.effects.SpecialAbilityActivation;
-
-@SuppressWarnings("unused") // the fields are injected by Gson
-public class EffectsDefinition implements Definition<List<Effect>> {
-
-    private GoldIncrease gold;
-
-    private MilitaryReinforcements military;
-
-    private ScienceProgress science;
-
-    private Discount discount;
-
-    private BonusPerBoardElement perBoardElement;
-
-    private ProductionIncrease production;
-
-    private RawPointsIncrease points;
-
-    private SpecialAbility action;
-
-    @Override
-    public List<Effect> create(Settings settings) {
-        List<Effect> effects = new ArrayList<>();
-        if (gold != null) {
-            effects.add(gold);
-        }
-        if (military != null) {
-            effects.add(military);
-        }
-        if (science != null) {
-            effects.add(science);
-        }
-        if (discount != null) {
-            effects.add(discount);
-        }
-        if (perBoardElement != null) {
-            effects.add(perBoardElement);
-        }
-        if (production != null) {
-            effects.add(production);
-        }
-        if (points != null) {
-            effects.add(points);
-        }
-        if (action != null) {
-            effects.add(new SpecialAbilityActivation(action));
-        }
-        return effects;
-    }
-}
diff --git a/game-engine/src/main/java/org/luxons/sevenwonders/game/data/definitions/WonderDefinition.java b/game-engine/src/main/java/org/luxons/sevenwonders/game/data/definitions/WonderDefinition.java
deleted file mode 100644
index a972a517..00000000
--- a/game-engine/src/main/java/org/luxons/sevenwonders/game/data/definitions/WonderDefinition.java
+++ /dev/null
@@ -1,27 +0,0 @@
-package org.luxons.sevenwonders.game.data.definitions;
-
-import java.util.Map;
-
-import org.luxons.sevenwonders.game.Settings;
-import org.luxons.sevenwonders.game.wonders.Wonder;
-
-@SuppressWarnings("unused,MismatchedQueryAndUpdateOfCollection") // the fields are injected by Gson
-public class WonderDefinition implements Definition<Wonder> {
-
-    private String name;
-
-    private Map<WonderSide, WonderSideDefinition> sides;
-
-    @Override
-    public Wonder create(Settings settings) {
-        Wonder wonder = new Wonder();
-        wonder.setName(name);
-
-        WonderSideDefinition wonderSideDef = sides.get(settings.pickWonderSide());
-        wonder.setInitialResource(wonderSideDef.getInitialResource());
-        wonder.setStages(wonderSideDef.createStages(settings));
-        wonder.setImage(wonderSideDef.getImage());
-        return wonder;
-    }
-
-}
diff --git a/game-engine/src/main/java/org/luxons/sevenwonders/game/data/definitions/WonderSide.java b/game-engine/src/main/java/org/luxons/sevenwonders/game/data/definitions/WonderSide.java
deleted file mode 100644
index 34091350..00000000
--- a/game-engine/src/main/java/org/luxons/sevenwonders/game/data/definitions/WonderSide.java
+++ /dev/null
@@ -1,6 +0,0 @@
-package org.luxons.sevenwonders.game.data.definitions;
-
-public enum WonderSide {
-    A,
-    B
-}
diff --git a/game-engine/src/main/java/org/luxons/sevenwonders/game/data/definitions/WonderSideDefinition.java b/game-engine/src/main/java/org/luxons/sevenwonders/game/data/definitions/WonderSideDefinition.java
deleted file mode 100644
index c84bba4e..00000000
--- a/game-engine/src/main/java/org/luxons/sevenwonders/game/data/definitions/WonderSideDefinition.java
+++ /dev/null
@@ -1,31 +0,0 @@
-package org.luxons.sevenwonders.game.data.definitions;
-
-import java.util.List;
-import java.util.stream.Collectors;
-
-import org.luxons.sevenwonders.game.Settings;
-import org.luxons.sevenwonders.game.resources.ResourceType;
-import org.luxons.sevenwonders.game.wonders.WonderStage;
-
-// the fields are injected by Gson
-@SuppressWarnings("unused,MismatchedQueryAndUpdateOfCollection")
-class WonderSideDefinition {
-
-    private ResourceType initialResource;
-
-    private List<WonderStageDefinition> stages;
-
-    private String image;
-
-    ResourceType getInitialResource() {
-        return initialResource;
-    }
-
-    List<WonderStage> createStages(Settings settings) {
-        return stages.stream().map(def -> def.create(settings)).collect(Collectors.toList());
-    }
-
-    String getImage() {
-        return image;
-    }
-}
diff --git a/game-engine/src/main/java/org/luxons/sevenwonders/game/data/definitions/WonderSidePickMethod.java b/game-engine/src/main/java/org/luxons/sevenwonders/game/data/definitions/WonderSidePickMethod.java
deleted file mode 100644
index 08aaad14..00000000
--- a/game-engine/src/main/java/org/luxons/sevenwonders/game/data/definitions/WonderSidePickMethod.java
+++ /dev/null
@@ -1,36 +0,0 @@
-package org.luxons.sevenwonders.game.data.definitions;
-
-import java.util.Random;
-
-public enum WonderSidePickMethod {
-    ALL_A {
-        @Override
-        public WonderSide pickSide(Random random, WonderSide lastPickedSide) {
-            return WonderSide.A;
-        }
-    },
-    ALL_B {
-        @Override
-        public WonderSide pickSide(Random random, WonderSide lastPickedSide) {
-            return WonderSide.B;
-        }
-    },
-    EACH_RANDOM {
-        @Override
-        public WonderSide pickSide(Random random, WonderSide lastPickedSide) {
-            return random.nextBoolean() ? WonderSide.A : WonderSide.B;
-        }
-    },
-    SAME_RANDOM_FOR_ALL {
-        @Override
-        public WonderSide pickSide(Random random, WonderSide lastPickedSide) {
-            if (lastPickedSide == null) {
-                return random.nextBoolean() ? WonderSide.A : WonderSide.B;
-            } else {
-                return lastPickedSide;
-            }
-        }
-    };
-
-    public abstract WonderSide pickSide(Random random, WonderSide lastPickedSide);
-}
diff --git a/game-engine/src/main/java/org/luxons/sevenwonders/game/data/definitions/WonderStageDefinition.java b/game-engine/src/main/java/org/luxons/sevenwonders/game/data/definitions/WonderStageDefinition.java
deleted file mode 100644
index 230484ee..00000000
--- a/game-engine/src/main/java/org/luxons/sevenwonders/game/data/definitions/WonderStageDefinition.java
+++ /dev/null
@@ -1,18 +0,0 @@
-package org.luxons.sevenwonders.game.data.definitions;
-
-import org.luxons.sevenwonders.game.Settings;
-import org.luxons.sevenwonders.game.cards.Requirements;
-import org.luxons.sevenwonders.game.wonders.WonderStage;
-
-@SuppressWarnings("unused") // the fields are injected by Gson
-public class WonderStageDefinition implements Definition<WonderStage> {
-
-    private Requirements requirements;
-
-    private EffectsDefinition effects;
-
-    @Override
-    public WonderStage create(Settings settings) {
-        return new WonderStage(requirements, effects.create(settings));
-    }
-}
diff --git a/game-engine/src/main/java/org/luxons/sevenwonders/game/data/serializers/NumericEffectSerializer.java b/game-engine/src/main/java/org/luxons/sevenwonders/game/data/serializers/NumericEffectSerializer.java
deleted file mode 100644
index c0a75d80..00000000
--- a/game-engine/src/main/java/org/luxons/sevenwonders/game/data/serializers/NumericEffectSerializer.java
+++ /dev/null
@@ -1,48 +0,0 @@
-package org.luxons.sevenwonders.game.data.serializers;
-
-import java.lang.reflect.Type;
-
-import org.luxons.sevenwonders.game.effects.Effect;
-import org.luxons.sevenwonders.game.effects.GoldIncrease;
-import org.luxons.sevenwonders.game.effects.MilitaryReinforcements;
-import org.luxons.sevenwonders.game.effects.RawPointsIncrease;
-
-import com.google.gson.JsonDeserializationContext;
-import com.google.gson.JsonDeserializer;
-import com.google.gson.JsonElement;
-import com.google.gson.JsonParseException;
-import com.google.gson.JsonPrimitive;
-import com.google.gson.JsonSerializationContext;
-import com.google.gson.JsonSerializer;
-
-public class NumericEffectSerializer implements JsonSerializer<Effect>, JsonDeserializer<Effect> {
-
-    @Override
-    public JsonElement serialize(Effect effect, Type typeOfSrc, JsonSerializationContext context) {
-        int value;
-        if (MilitaryReinforcements.class.equals(typeOfSrc)) {
-            value = ((MilitaryReinforcements) effect).getCount();
-        } else if (GoldIncrease.class.equals(typeOfSrc)) {
-            value = ((GoldIncrease) effect).getAmount();
-        } else if (RawPointsIncrease.class.equals(typeOfSrc)) {
-            value = ((RawPointsIncrease) effect).getPoints();
-        } else {
-            throw new IllegalArgumentException("Unknown numeric effect " + typeOfSrc.getTypeName());
-        }
-        return new JsonPrimitive(value);
-    }
-
-    @Override
-    public Effect deserialize(JsonElement json, Type typeOfT, JsonDeserializationContext context)
-            throws JsonParseException {
-        int value = json.getAsInt();
-        if (MilitaryReinforcements.class.equals(typeOfT)) {
-            return new MilitaryReinforcements(value);
-        } else if (GoldIncrease.class.equals(typeOfT)) {
-            return new GoldIncrease(value);
-        } else if (RawPointsIncrease.class.equals(typeOfT)) {
-            return new RawPointsIncrease(value);
-        }
-        throw new IllegalArgumentException("Unknown numeric effet " + typeOfT.getTypeName());
-    }
-}
diff --git a/game-engine/src/main/java/org/luxons/sevenwonders/game/data/serializers/ProductionIncreaseSerializer.java b/game-engine/src/main/java/org/luxons/sevenwonders/game/data/serializers/ProductionIncreaseSerializer.java
deleted file mode 100644
index c3eb1386..00000000
--- a/game-engine/src/main/java/org/luxons/sevenwonders/game/data/serializers/ProductionIncreaseSerializer.java
+++ /dev/null
@@ -1,55 +0,0 @@
-package org.luxons.sevenwonders.game.data.serializers;
-
-import java.lang.reflect.Type;
-
-import org.luxons.sevenwonders.game.effects.ProductionIncrease;
-import org.luxons.sevenwonders.game.resources.Production;
-
-import com.google.gson.JsonDeserializationContext;
-import com.google.gson.JsonDeserializer;
-import com.google.gson.JsonElement;
-import com.google.gson.JsonParseException;
-import com.google.gson.JsonPrimitive;
-import com.google.gson.JsonSerializationContext;
-import com.google.gson.JsonSerializer;
-
-public class ProductionIncreaseSerializer implements JsonSerializer<ProductionIncrease>,
-        JsonDeserializer<ProductionIncrease> {
-
-    @Override
-    public JsonElement serialize(ProductionIncrease productionIncrease, Type typeOfSrc,
-            JsonSerializationContext context) {
-        Production production = productionIncrease.getProduction();
-        JsonElement json = context.serialize(production);
-        if (!json.isJsonNull() && !productionIncrease.isSellable()) {
-            return new JsonPrimitive(wrapInBrackets(json.getAsString()));
-        }
-        return json;
-    }
-
-    private String wrapInBrackets(String str) {
-        return '(' + str + ')';
-    }
-
-    @Override
-    public ProductionIncrease deserialize(JsonElement json, Type typeOfT, JsonDeserializationContext context)
-            throws JsonParseException {
-        ProductionIncrease productionIncrease = new ProductionIncrease();
-
-        String resourcesStr = json.getAsString();
-        boolean isSellable = !resourcesStr.startsWith("(");
-        if (!isSellable) {
-            resourcesStr = unwrapBrackets(resourcesStr);
-            json = new JsonPrimitive(resourcesStr);
-        }
-        productionIncrease.setSellable(isSellable);
-
-        Production production = context.deserialize(json, Production.class);
-        productionIncrease.setProduction(production);
-        return productionIncrease;
-    }
-
-    private static String unwrapBrackets(String str) {
-        return str.substring(1, str.length() - 1);
-    }
-}
diff --git a/game-engine/src/main/java/org/luxons/sevenwonders/game/data/serializers/ProductionSerializer.java b/game-engine/src/main/java/org/luxons/sevenwonders/game/data/serializers/ProductionSerializer.java
deleted file mode 100644
index 178134bb..00000000
--- a/game-engine/src/main/java/org/luxons/sevenwonders/game/data/serializers/ProductionSerializer.java
+++ /dev/null
@@ -1,78 +0,0 @@
-package org.luxons.sevenwonders.game.data.serializers;
-
-import java.lang.reflect.Type;
-import java.util.Set;
-import java.util.stream.Collectors;
-
-import org.luxons.sevenwonders.game.resources.Production;
-import org.luxons.sevenwonders.game.resources.ResourceType;
-import org.luxons.sevenwonders.game.resources.Resources;
-
-import com.google.gson.JsonDeserializationContext;
-import com.google.gson.JsonDeserializer;
-import com.google.gson.JsonElement;
-import com.google.gson.JsonNull;
-import com.google.gson.JsonParseException;
-import com.google.gson.JsonSerializationContext;
-import com.google.gson.JsonSerializer;
-
-public class ProductionSerializer implements JsonSerializer<Production>, JsonDeserializer<Production> {
-
-    @Override
-    public JsonElement serialize(Production production, Type typeOfSrc, JsonSerializationContext context) {
-        Resources fixedResources = production.getFixedResources();
-        Set<Set<ResourceType>> choices = production.getAlternativeResources();
-        if (fixedResources.isEmpty()) {
-            return serializeAsChoice(choices, context);
-        } else if (choices.isEmpty()) {
-            return serializeAsResources(fixedResources, context);
-        } else {
-            throw new IllegalArgumentException("Cannot serialize a production with mixed fixed resources and choices");
-        }
-    }
-
-    private static JsonElement serializeAsChoice(Set<Set<ResourceType>> choices, JsonSerializationContext context) {
-        if (choices.isEmpty()) {
-            return JsonNull.INSTANCE;
-        }
-        if (choices.size() > 1) {
-            throw new IllegalArgumentException("Cannot serialize a production with more than one choice");
-        }
-        String str = choices.stream()
-                            .flatMap(Set::stream)
-                            .map(ResourceType::getSymbol)
-                            .map(Object::toString)
-                            .collect(Collectors.joining("/"));
-        return context.serialize(str);
-    }
-
-    private static JsonElement serializeAsResources(Resources fixedResources, JsonSerializationContext context) {
-        return context.serialize(fixedResources);
-    }
-
-    @Override
-    public Production deserialize(JsonElement json, Type typeOfT, JsonDeserializationContext context)
-            throws JsonParseException {
-        String resourcesStr = json.getAsString();
-        Production production = new Production();
-        if (resourcesStr.contains("/")) {
-            production.addChoice(createChoice(resourcesStr));
-        } else {
-            Resources fixedResources = context.deserialize(json, Resources.class);
-            production.addAll(fixedResources);
-        }
-        return production;
-    }
-
-    private ResourceType[] createChoice(String choiceStr) {
-        String[] symbols = choiceStr.split("/");
-        ResourceType[] choice = new ResourceType[symbols.length];
-        for (int i = 0; i < symbols.length; i++) {
-            if (symbols[i].length() != 1) {
-                throw new IllegalArgumentException("Choice elements must be resource types, got " + symbols[i]);
-            }
-            choice[i] = ResourceType.fromSymbol(symbols[i].charAt(0));
-        }
-        return choice;
-    }
-}
diff --git a/game-engine/src/main/java/org/luxons/sevenwonders/game/data/serializers/ResourceTypeSerializer.java b/game-engine/src/main/java/org/luxons/sevenwonders/game/data/serializers/ResourceTypeSerializer.java
deleted file mode 100644
index d2a49180..00000000
--- a/game-engine/src/main/java/org/luxons/sevenwonders/game/data/serializers/ResourceTypeSerializer.java
+++ /dev/null
@@ -1,31 +0,0 @@
-package org.luxons.sevenwonders.game.data.serializers;
-
-import java.lang.reflect.Type;
-
-import org.luxons.sevenwonders.game.resources.ResourceType;
-
-import com.google.gson.JsonDeserializationContext;
-import com.google.gson.JsonDeserializer;
-import com.google.gson.JsonElement;
-import com.google.gson.JsonParseException;
-import com.google.gson.JsonPrimitive;
-import com.google.gson.JsonSerializationContext;
-import com.google.gson.JsonSerializer;
-
-public class ResourceTypeSerializer implements JsonSerializer<ResourceType>, JsonDeserializer<ResourceType> {
-
-    @Override
-    public JsonElement serialize(ResourceType type, Type typeOfSrc, JsonSerializationContext context) {
-        return new JsonPrimitive(type.getSymbol());
-    }
-
-    @Override
-    public ResourceType deserialize(JsonElement json, Type typeOfT, JsonDeserializationContext context)
-            throws JsonParseException {
-        String str = json.getAsString();
-        if (str.isEmpty()) {
-            throw new IllegalArgumentException("Empty string is not a valid resource type");
-        }
-        return ResourceType.fromSymbol(str.charAt(0));
-    }
-}
diff --git a/game-engine/src/main/java/org/luxons/sevenwonders/game/data/serializers/ResourceTypesSerializer.java b/game-engine/src/main/java/org/luxons/sevenwonders/game/data/serializers/ResourceTypesSerializer.java
deleted file mode 100644
index 89d3e723..00000000
--- a/game-engine/src/main/java/org/luxons/sevenwonders/game/data/serializers/ResourceTypesSerializer.java
+++ /dev/null
@@ -1,37 +0,0 @@
-package org.luxons.sevenwonders.game.data.serializers;
-
-import java.lang.reflect.Type;
-import java.util.ArrayList;
-import java.util.List;
-import java.util.stream.Collectors;
-
-import org.luxons.sevenwonders.game.resources.ResourceType;
-
-import com.google.gson.JsonDeserializationContext;
-import com.google.gson.JsonDeserializer;
-import com.google.gson.JsonElement;
-import com.google.gson.JsonParseException;
-import com.google.gson.JsonPrimitive;
-import com.google.gson.JsonSerializationContext;
-import com.google.gson.JsonSerializer;
-
-public class ResourceTypesSerializer implements JsonSerializer<List<ResourceType>>,
-        JsonDeserializer<List<ResourceType>> {
-
-    @Override
-    public JsonElement serialize(List<ResourceType> resources, Type typeOfSrc, JsonSerializationContext context) {
-        String s = resources.stream().map(ResourceType::getSymbol).map(Object::toString).collect(Collectors.joining());
-        return new JsonPrimitive(s);
-    }
-
-    @Override
-    public List<ResourceType> deserialize(JsonElement json, Type typeOfT, JsonDeserializationContext context)
-            throws JsonParseException {
-        String s = json.getAsString();
-        List<ResourceType> resources = new ArrayList<>();
-        for (char c : s.toCharArray()) {
-            resources.add(ResourceType.fromSymbol(c));
-        }
-        return resources;
-    }
-}
diff --git a/game-engine/src/main/java/org/luxons/sevenwonders/game/data/serializers/ResourcesSerializer.java b/game-engine/src/main/java/org/luxons/sevenwonders/game/data/serializers/ResourcesSerializer.java
deleted file mode 100644
index 9c27b2a1..00000000
--- a/game-engine/src/main/java/org/luxons/sevenwonders/game/data/serializers/ResourcesSerializer.java
+++ /dev/null
@@ -1,40 +0,0 @@
-package org.luxons.sevenwonders.game.data.serializers;
-
-import java.lang.reflect.Type;
-import java.util.stream.Collectors;
-
-import org.luxons.sevenwonders.game.resources.ResourceType;
-import org.luxons.sevenwonders.game.resources.Resources;
-
-import com.google.gson.JsonDeserializationContext;
-import com.google.gson.JsonDeserializer;
-import com.google.gson.JsonElement;
-import com.google.gson.JsonNull;
-import com.google.gson.JsonParseException;
-import com.google.gson.JsonPrimitive;
-import com.google.gson.JsonSerializationContext;
-import com.google.gson.JsonSerializer;
-
-public class ResourcesSerializer implements JsonSerializer<Resources>, JsonDeserializer<Resources> {
-
-    @Override
-    public JsonElement serialize(Resources resources, Type typeOfSrc, JsonSerializationContext context) {
-        String s = resources.asList()
-                            .stream()
-                            .map(ResourceType::getSymbol)
-                            .map(Object::toString)
-                            .collect(Collectors.joining());
-        return s.isEmpty() ? JsonNull.INSTANCE : new JsonPrimitive(s);
-    }
-
-    @Override
-    public Resources deserialize(JsonElement json, Type typeOfT, JsonDeserializationContext context)
-            throws JsonParseException {
-        String s = json.getAsString();
-        Resources resources = new Resources();
-        for (char c : s.toCharArray()) {
-            resources.add(ResourceType.fromSymbol(c), 1);
-        }
-        return resources;
-    }
-}
diff --git a/game-engine/src/main/java/org/luxons/sevenwonders/game/data/serializers/ScienceProgressSerializer.java b/game-engine/src/main/java/org/luxons/sevenwonders/game/data/serializers/ScienceProgressSerializer.java
deleted file mode 100644
index cecad405..00000000
--- a/game-engine/src/main/java/org/luxons/sevenwonders/game/data/serializers/ScienceProgressSerializer.java
+++ /dev/null
@@ -1,64 +0,0 @@
-package org.luxons.sevenwonders.game.data.serializers;
-
-import java.lang.reflect.Type;
-
-import org.luxons.sevenwonders.game.boards.Science;
-import org.luxons.sevenwonders.game.boards.ScienceType;
-import org.luxons.sevenwonders.game.effects.ScienceProgress;
-
-import com.google.gson.JsonDeserializationContext;
-import com.google.gson.JsonDeserializer;
-import com.google.gson.JsonElement;
-import com.google.gson.JsonNull;
-import com.google.gson.JsonParseException;
-import com.google.gson.JsonPrimitive;
-import com.google.gson.JsonSerializationContext;
-import com.google.gson.JsonSerializer;
-
-public class ScienceProgressSerializer implements JsonSerializer<ScienceProgress>, JsonDeserializer<ScienceProgress> {
-
-    @Override
-    public JsonElement serialize(ScienceProgress scienceProgress, Type typeOfSrc, JsonSerializationContext context) {
-        Science science = scienceProgress.getScience();
-
-        if (science.size() > 1) {
-            throw new UnsupportedOperationException("Cannot serialize science containing more than one element");
-        }
-
-        for (ScienceType type : ScienceType.values()) {
-            int quantity = science.getQuantity(type);
-            if (quantity == 1) {
-                return context.serialize(type);
-            }
-        }
-
-        if (science.getJokers() == 1) {
-            return new JsonPrimitive("any");
-        }
-
-        return JsonNull.INSTANCE;
-    }
-
-    @Override
-    public ScienceProgress deserialize(JsonElement json, Type typeOfT, JsonDeserializationContext context)
-            throws JsonParseException {
-        String s = json.getAsString();
-        ScienceProgress scienceProgress = new ScienceProgress();
-        Science science = new Science();
-        if ("any".equals(s)) {
-            science.addJoker(1);
-        } else {
-            science.add(deserializeScienceType(json, context), 1);
-        }
-        scienceProgress.setScience(science);
-        return scienceProgress;
-    }
-
-    private ScienceType deserializeScienceType(JsonElement json, JsonDeserializationContext context) {
-        ScienceType type = context.deserialize(json, ScienceType.class);
-        if (type == null) {
-            throw new IllegalArgumentException("Invalid science type " + json.getAsString());
-        }
-        return type;
-    }
-}
diff --git a/game-engine/src/main/java/org/luxons/sevenwonders/game/resources/ResourceType.java b/game-engine/src/main/java/org/luxons/sevenwonders/game/resources/ResourceType.java
index baad8451..644437df 100644
--- a/game-engine/src/main/java/org/luxons/sevenwonders/game/resources/ResourceType.java
+++ b/game-engine/src/main/java/org/luxons/sevenwonders/game/resources/ResourceType.java
@@ -26,6 +26,14 @@ public enum ResourceType {
         this.symbol = symbol;
     }
 
+    public static ResourceType fromSymbol(String symbol) {
+        if (symbol.length() != 1) {
+            throw new IllegalArgumentException("The given symbol must be a valid single-char resource type, got "
+                    + symbol);
+        }
+        return fromSymbol(symbol.charAt(0));
+    }
+
     public static ResourceType fromSymbol(Character symbol) {
         ResourceType type = typesPerSymbol.get(symbol);
         if (type == null) {
diff --git a/game-engine/src/main/java/org/luxons/sevenwonders/game/Settings.kt b/game-engine/src/main/kotlin/org/luxons/sevenwonders/game/Settings.kt
index 70dddccf..fac3979e 100644
--- a/game-engine/src/main/java/org/luxons/sevenwonders/game/Settings.kt
+++ b/game-engine/src/main/kotlin/org/luxons/sevenwonders/game/Settings.kt
@@ -1,8 +1,8 @@
 package org.luxons.sevenwonders.game
 
 import org.luxons.sevenwonders.game.api.CustomizableSettings
-import org.luxons.sevenwonders.game.data.definitions.WonderSide
-import org.luxons.sevenwonders.game.data.definitions.WonderSidePickMethod
+import org.luxons.sevenwonders.game.data.WonderSide
+import org.luxons.sevenwonders.game.data.WonderSidePickMethod
 import java.util.Random
 
 class Settings @JvmOverloads constructor(
diff --git a/game-engine/src/main/kotlin/org/luxons/sevenwonders/game/api/CustomizableSettings.kt b/game-engine/src/main/kotlin/org/luxons/sevenwonders/game/api/CustomizableSettings.kt
index 354aecb6..e4efb9e3 100644
--- a/game-engine/src/main/kotlin/org/luxons/sevenwonders/game/api/CustomizableSettings.kt
+++ b/game-engine/src/main/kotlin/org/luxons/sevenwonders/game/api/CustomizableSettings.kt
@@ -1,6 +1,6 @@
 package org.luxons.sevenwonders.game.api
 
-import org.luxons.sevenwonders.game.data.definitions.WonderSidePickMethod
+import org.luxons.sevenwonders.game.data.WonderSidePickMethod
 
 data class CustomizableSettings(
     val randomSeedForTests: Long? = null,
diff --git a/game-engine/src/main/kotlin/org/luxons/sevenwonders/game/data/GameDefinition.kt b/game-engine/src/main/kotlin/org/luxons/sevenwonders/game/data/GameDefinition.kt
new file mode 100644
index 00000000..b7a859eb
--- /dev/null
+++ b/game-engine/src/main/kotlin/org/luxons/sevenwonders/game/data/GameDefinition.kt
@@ -0,0 +1,30 @@
+package org.luxons.sevenwonders.game.data
+
+import org.luxons.sevenwonders.game.Game
+import org.luxons.sevenwonders.game.Settings
+import org.luxons.sevenwonders.game.api.CustomizableSettings
+import org.luxons.sevenwonders.game.boards.Board
+import org.luxons.sevenwonders.game.data.definitions.DecksDefinition
+import org.luxons.sevenwonders.game.data.definitions.WonderDefinition
+
+class GameDefinition internal constructor(
+    rules: GlobalRules,
+    private val wonders: Array<WonderDefinition>,
+    private val decksDefinition: DecksDefinition
+) {
+    val minPlayers: Int = rules.minPlayers
+    val maxPlayers: Int = rules.maxPlayers
+
+    fun initGame(id: Long, customSettings: CustomizableSettings, nbPlayers: Int): Game {
+        val settings = Settings(nbPlayers, customSettings)
+        val boards = assignBoards(settings, nbPlayers)
+        val decks = decksDefinition.prepareDecks(settings)
+        return Game(id, settings, nbPlayers, boards, decks)
+    }
+
+    private fun assignBoards(settings: Settings, nbPlayers: Int): List<Board> {
+        val randomizedWonders = wonders.toMutableList()
+        randomizedWonders.shuffle(settings.random)
+        return randomizedWonders.take(nbPlayers).mapIndexed { i, wDef -> Board(wDef.create(settings), i, settings) }
+    }
+}
diff --git a/game-engine/src/main/kotlin/org/luxons/sevenwonders/game/data/GameDefinitionLoader.kt b/game-engine/src/main/kotlin/org/luxons/sevenwonders/game/data/GameDefinitionLoader.kt
new file mode 100644
index 00000000..22ecc488
--- /dev/null
+++ b/game-engine/src/main/kotlin/org/luxons/sevenwonders/game/data/GameDefinitionLoader.kt
@@ -0,0 +1,63 @@
+package org.luxons.sevenwonders.game.data
+
+import com.github.salomonbrys.kotson.registerTypeAdapter
+import com.github.salomonbrys.kotson.typeToken
+import com.google.gson.Gson
+import com.google.gson.GsonBuilder
+import com.google.gson.JsonNull
+import com.google.gson.JsonPrimitive
+import org.luxons.sevenwonders.game.data.definitions.DecksDefinition
+import org.luxons.sevenwonders.game.data.definitions.WonderDefinition
+import org.luxons.sevenwonders.game.data.serializers.NumericEffectSerializer
+import org.luxons.sevenwonders.game.data.serializers.ProductionIncreaseSerializer
+import org.luxons.sevenwonders.game.data.serializers.ProductionSerializer
+import org.luxons.sevenwonders.game.data.serializers.ResourceTypeSerializer
+import org.luxons.sevenwonders.game.data.serializers.ResourceTypesSerializer
+import org.luxons.sevenwonders.game.data.serializers.ResourcesSerializer
+import org.luxons.sevenwonders.game.data.serializers.ScienceProgressSerializer
+import org.luxons.sevenwonders.game.effects.GoldIncrease
+import org.luxons.sevenwonders.game.effects.MilitaryReinforcements
+import org.luxons.sevenwonders.game.effects.ProductionIncrease
+import org.luxons.sevenwonders.game.effects.RawPointsIncrease
+import org.luxons.sevenwonders.game.effects.ScienceProgress
+import org.luxons.sevenwonders.game.resources.Production
+import org.luxons.sevenwonders.game.resources.ResourceType
+import org.luxons.sevenwonders.game.resources.Resources
+
+class GameDefinitionLoader {
+
+    val gameDefinition: GameDefinition by lazy { load() }
+
+    private fun load(): GameDefinition {
+        val gson: Gson = createGson()
+        val rules = loadJson("global_rules.json", GlobalRules::class.java, gson)
+        val wonders = loadJson("wonders.json", Array<WonderDefinition>::class.java, gson)
+        val decksDefinition = loadJson("cards.json", DecksDefinition::class.java, gson)
+        return GameDefinition(rules, wonders, decksDefinition)
+    }
+
+    private fun <T> loadJson(filename: String, clazz: Class<T>, gson: Gson): T {
+        val packageAsPath = GameDefinitionLoader::class.java.`package`.name.replace('.', '/')
+        val resourcePath = "/$packageAsPath/$filename"
+        val resource = GameDefinitionLoader::class.java.getResource(resourcePath)
+        val json = resource.readText()
+        return gson.fromJson(json, clazz)
+    }
+
+    private fun createGson(): Gson {
+        return GsonBuilder().disableHtmlEscaping()
+            .registerTypeAdapter<Resources>(ResourcesSerializer())
+            .registerTypeAdapter<ResourceType>(ResourceTypeSerializer())
+            .registerTypeAdapter<List<ResourceType>>(ResourceTypesSerializer())
+            .registerTypeAdapter<Production>(ProductionSerializer())
+            .registerTypeAdapter<ProductionIncrease>(ProductionIncreaseSerializer())
+            .registerTypeAdapter<MilitaryReinforcements>(NumericEffectSerializer())
+            .registerTypeAdapter<RawPointsIncrease>(NumericEffectSerializer())
+            .registerTypeAdapter<GoldIncrease>(NumericEffectSerializer())
+            .registerTypeAdapter<ScienceProgress>(ScienceProgressSerializer())
+            .create()
+    }
+
+    private inline fun <reified T: Any> GsonBuilder.registerTypeAdapter(typeAdapter: Any): GsonBuilder
+            = this.registerTypeAdapter(typeToken<T>(), typeAdapter)
+}
diff --git a/game-engine/src/main/kotlin/org/luxons/sevenwonders/game/data/GlobalRules.kt b/game-engine/src/main/kotlin/org/luxons/sevenwonders/game/data/GlobalRules.kt
new file mode 100644
index 00000000..f472cc2a
--- /dev/null
+++ b/game-engine/src/main/kotlin/org/luxons/sevenwonders/game/data/GlobalRules.kt
@@ -0,0 +1,6 @@
+package org.luxons.sevenwonders.game.data
+
+internal data class GlobalRules(
+    val minPlayers: Int,
+    val maxPlayers: Int
+)
diff --git a/game-engine/src/main/kotlin/org/luxons/sevenwonders/game/data/WonderSide.kt b/game-engine/src/main/kotlin/org/luxons/sevenwonders/game/data/WonderSide.kt
new file mode 100644
index 00000000..4a818fc4
--- /dev/null
+++ b/game-engine/src/main/kotlin/org/luxons/sevenwonders/game/data/WonderSide.kt
@@ -0,0 +1,6 @@
+package org.luxons.sevenwonders.game.data
+
+enum class WonderSide {
+    A,
+    B
+}
diff --git a/game-engine/src/main/kotlin/org/luxons/sevenwonders/game/data/WonderSidePickMethod.kt b/game-engine/src/main/kotlin/org/luxons/sevenwonders/game/data/WonderSidePickMethod.kt
new file mode 100644
index 00000000..29fe2126
--- /dev/null
+++ b/game-engine/src/main/kotlin/org/luxons/sevenwonders/game/data/WonderSidePickMethod.kt
@@ -0,0 +1,28 @@
+package org.luxons.sevenwonders.game.data
+
+import java.util.Random
+
+enum class WonderSidePickMethod {
+    ALL_A {
+        override fun pickSide(random: Random, lastPickedSide: WonderSide?): WonderSide {
+            return WonderSide.A
+        }
+    },
+    ALL_B {
+        override fun pickSide(random: Random, lastPickedSide: WonderSide?): WonderSide {
+            return WonderSide.B
+        }
+    },
+    EACH_RANDOM {
+        override fun pickSide(random: Random, lastPickedSide: WonderSide?): WonderSide {
+            return if (random.nextBoolean()) WonderSide.A else WonderSide.B
+        }
+    },
+    SAME_RANDOM_FOR_ALL {
+        override fun pickSide(random: Random, lastPickedSide: WonderSide?): WonderSide {
+            return lastPickedSide ?: if (random.nextBoolean()) WonderSide.A else WonderSide.B
+        }
+    };
+
+    abstract fun pickSide(random: Random, lastPickedSide: WonderSide?): WonderSide
+}
diff --git a/game-engine/src/main/kotlin/org/luxons/sevenwonders/game/data/definitions/CardDefinition.kt b/game-engine/src/main/kotlin/org/luxons/sevenwonders/game/data/definitions/CardDefinition.kt
new file mode 100644
index 00000000..2827564b
--- /dev/null
+++ b/game-engine/src/main/kotlin/org/luxons/sevenwonders/game/data/definitions/CardDefinition.kt
@@ -0,0 +1,20 @@
+package org.luxons.sevenwonders.game.data.definitions
+
+import org.luxons.sevenwonders.game.cards.Card
+import org.luxons.sevenwonders.game.cards.Color
+import org.luxons.sevenwonders.game.cards.Requirements
+
+internal class CardDefinition(
+    private val name: String,
+    private val color: Color,
+    private val requirements: Requirements? = null,
+    private val effect: EffectsDefinition,
+    private val chainParent: String? = null,
+    private val chainChildren: List<String> = emptyList(),
+    private val image: String? = null,
+    private val countPerNbPlayer: Map<Int, Int>
+) {
+    fun create(nbPlayers: Int): List<Card> = List( countPerNbPlayer[nbPlayers]!!) { create() }
+
+    fun create(): Card = Card(name, color, requirements, effect.create(), chainParent, chainChildren, image)
+}
diff --git a/game-engine/src/main/kotlin/org/luxons/sevenwonders/game/data/definitions/DecksDefinition.kt b/game-engine/src/main/kotlin/org/luxons/sevenwonders/game/data/definitions/DecksDefinition.kt
new file mode 100644
index 00000000..a09f0642
--- /dev/null
+++ b/game-engine/src/main/kotlin/org/luxons/sevenwonders/game/data/definitions/DecksDefinition.kt
@@ -0,0 +1,53 @@
+package org.luxons.sevenwonders.game.data.definitions
+
+import org.luxons.sevenwonders.game.Settings
+import org.luxons.sevenwonders.game.cards.Card
+import org.luxons.sevenwonders.game.cards.CardBack
+import org.luxons.sevenwonders.game.cards.Decks
+
+internal class DecksDefinition(
+    private val age1: List<CardDefinition>,
+    private val age2: List<CardDefinition>,
+    private val age3: List<CardDefinition>,
+    private val age1Back: String,
+    private val age2Back: String,
+    private val age3Back: String,
+    private val guildCards: List<CardDefinition>
+) {
+    fun prepareDecks(settings: Settings): Decks {
+        val cardsPerAge = mapOf(
+            1 to prepareStandardDeck(age1, settings, age1Back),
+            2 to prepareStandardDeck(age2, settings, age2Back),
+            3 to prepareAge3Deck(settings)
+        )
+        return Decks(cardsPerAge)
+    }
+
+    private fun prepareStandardDeck(defs: List<CardDefinition>, settings: Settings, backImage: String): List<Card> {
+        val back = CardBack(backImage)
+        val cards = createDeck(defs, settings, back).toMutableList()
+        cards.shuffle(settings.random)
+        return cards
+    }
+
+    private fun prepareAge3Deck(settings: Settings): List<Card> {
+        val back = CardBack(age3Back)
+        val age3deck = createDeck(age3, settings, back).toMutableList()
+        age3deck.addAll(createGuildCards(settings, back))
+        age3deck.shuffle(settings.random)
+        return age3deck
+    }
+
+    private fun createDeck(defs: List<CardDefinition>, settings: Settings, back: CardBack): List<Card> {
+        return defs.flatMap { it.create(settings.nbPlayers) }.onEach { it.back = back }
+    }
+
+    private fun createGuildCards(settings: Settings, back: CardBack): List<Card> {
+        val guild = guildCards
+            .map { it.create() }
+            .map { c -> c.back = back; c }
+            .toMutableList()
+        guild.shuffle(settings.random)
+        return guild.subList(0, settings.nbPlayers + 2)
+    }
+}
diff --git a/game-engine/src/main/kotlin/org/luxons/sevenwonders/game/data/definitions/EffectsDefinition.kt b/game-engine/src/main/kotlin/org/luxons/sevenwonders/game/data/definitions/EffectsDefinition.kt
new file mode 100644
index 00000000..978ec4a6
--- /dev/null
+++ b/game-engine/src/main/kotlin/org/luxons/sevenwonders/game/data/definitions/EffectsDefinition.kt
@@ -0,0 +1,53 @@
+package org.luxons.sevenwonders.game.data.definitions
+
+import org.luxons.sevenwonders.game.effects.BonusPerBoardElement
+import org.luxons.sevenwonders.game.effects.Discount
+import org.luxons.sevenwonders.game.effects.Effect
+import org.luxons.sevenwonders.game.effects.GoldIncrease
+import org.luxons.sevenwonders.game.effects.MilitaryReinforcements
+import org.luxons.sevenwonders.game.effects.ProductionIncrease
+import org.luxons.sevenwonders.game.effects.RawPointsIncrease
+import org.luxons.sevenwonders.game.effects.ScienceProgress
+import org.luxons.sevenwonders.game.effects.SpecialAbility
+import org.luxons.sevenwonders.game.effects.SpecialAbilityActivation
+import java.util.ArrayList
+
+internal data class EffectsDefinition(
+    private val gold: GoldIncrease? = null,
+    private val military: MilitaryReinforcements? = null,
+    private val science: ScienceProgress? = null,
+    private val discount: Discount? = null,
+    private val perBoardElement: BonusPerBoardElement? = null,
+    private val production: ProductionIncrease? = null,
+    private val points: RawPointsIncrease? = null,
+    private val action: SpecialAbility? = null
+) {
+    fun create(): List<Effect> {
+        val effects = ArrayList<Effect>()
+        if (gold != null) {
+            effects.add(gold)
+        }
+        if (military != null) {
+            effects.add(military)
+        }
+        if (science != null) {
+            effects.add(science)
+        }
+        if (discount != null) {
+            effects.add(discount)
+        }
+        if (perBoardElement != null) {
+            effects.add(perBoardElement)
+        }
+        if (production != null) {
+            effects.add(production)
+        }
+        if (points != null) {
+            effects.add(points)
+        }
+        if (action != null) {
+            effects.add(SpecialAbilityActivation(action))
+        }
+        return effects
+    }
+}
diff --git a/game-engine/src/main/kotlin/org/luxons/sevenwonders/game/data/definitions/WonderDefinition.kt b/game-engine/src/main/kotlin/org/luxons/sevenwonders/game/data/definitions/WonderDefinition.kt
new file mode 100644
index 00000000..558f16e8
--- /dev/null
+++ b/game-engine/src/main/kotlin/org/luxons/sevenwonders/game/data/definitions/WonderDefinition.kt
@@ -0,0 +1,21 @@
+package org.luxons.sevenwonders.game.data.definitions
+
+import org.luxons.sevenwonders.game.Settings
+import org.luxons.sevenwonders.game.data.WonderSide
+import org.luxons.sevenwonders.game.wonders.Wonder
+
+internal data class WonderDefinition(
+    private val name: String,
+    private val sides: Map<WonderSide, WonderSideDefinition>
+) {
+    fun create(settings: Settings): Wonder {
+        val wonder = Wonder()
+        wonder.name = name
+
+        val wonderSideDef = sides[settings.pickWonderSide()]!!
+        wonder.initialResource = wonderSideDef.initialResource
+        wonder.stages = wonderSideDef.createStages()
+        wonder.image = wonderSideDef.image
+        return wonder
+    }
+}
diff --git a/game-engine/src/main/kotlin/org/luxons/sevenwonders/game/data/definitions/WonderSideDefinition.kt b/game-engine/src/main/kotlin/org/luxons/sevenwonders/game/data/definitions/WonderSideDefinition.kt
new file mode 100644
index 00000000..247432e3
--- /dev/null
+++ b/game-engine/src/main/kotlin/org/luxons/sevenwonders/game/data/definitions/WonderSideDefinition.kt
@@ -0,0 +1,14 @@
+package org.luxons.sevenwonders.game.data.definitions
+
+import org.luxons.sevenwonders.game.resources.ResourceType
+import org.luxons.sevenwonders.game.wonders.WonderStage
+
+internal class WonderSideDefinition(
+    val initialResource: ResourceType,
+    private val stages: List<WonderStageDefinition>,
+    val image: String
+) {
+    fun createStages(): List<WonderStage> {
+        return stages.map { def -> def.create() }
+    }
+}
diff --git a/game-engine/src/main/kotlin/org/luxons/sevenwonders/game/data/definitions/WonderStageDefinition.kt b/game-engine/src/main/kotlin/org/luxons/sevenwonders/game/data/definitions/WonderStageDefinition.kt
new file mode 100644
index 00000000..3d2872d0
--- /dev/null
+++ b/game-engine/src/main/kotlin/org/luxons/sevenwonders/game/data/definitions/WonderStageDefinition.kt
@@ -0,0 +1,13 @@
+package org.luxons.sevenwonders.game.data.definitions
+
+import org.luxons.sevenwonders.game.cards.Requirements
+import org.luxons.sevenwonders.game.wonders.WonderStage
+
+internal class WonderStageDefinition(
+    private val requirements: Requirements,
+    private val effects: EffectsDefinition
+) {
+    fun create(): WonderStage {
+        return WonderStage(requirements, effects.create())
+    }
+}
diff --git a/game-engine/src/main/kotlin/org/luxons/sevenwonders/game/data/serializers/NumericEffectSerializer.kt b/game-engine/src/main/kotlin/org/luxons/sevenwonders/game/data/serializers/NumericEffectSerializer.kt
new file mode 100644
index 00000000..510a511c
--- /dev/null
+++ b/game-engine/src/main/kotlin/org/luxons/sevenwonders/game/data/serializers/NumericEffectSerializer.kt
@@ -0,0 +1,40 @@
+package org.luxons.sevenwonders.game.data.serializers
+
+import java.lang.reflect.Type
+
+import org.luxons.sevenwonders.game.effects.Effect
+import org.luxons.sevenwonders.game.effects.GoldIncrease
+import org.luxons.sevenwonders.game.effects.MilitaryReinforcements
+import org.luxons.sevenwonders.game.effects.RawPointsIncrease
+
+import com.google.gson.JsonDeserializationContext
+import com.google.gson.JsonDeserializer
+import com.google.gson.JsonElement
+import com.google.gson.JsonParseException
+import com.google.gson.JsonPrimitive
+import com.google.gson.JsonSerializationContext
+import com.google.gson.JsonSerializer
+
+class NumericEffectSerializer : JsonSerializer<Effect>, JsonDeserializer<Effect> {
+
+    override fun serialize(effect: Effect, typeOfSrc: Type, context: JsonSerializationContext): JsonElement {
+        val value: Int = when (effect) {
+            is MilitaryReinforcements -> effect.count
+            is GoldIncrease -> effect.amount
+            is RawPointsIncrease -> effect.points
+            else -> throw IllegalArgumentException("Unknown numeric effect " + effect.javaClass.name)
+        }
+        return JsonPrimitive(value)
+    }
+
+    @Throws(JsonParseException::class)
+    override fun deserialize(json: JsonElement, typeOfT: Type, context: JsonDeserializationContext): Effect {
+        val value = json.asInt
+        return when (typeOfT) {
+            MilitaryReinforcements::class.java -> MilitaryReinforcements(value)
+            GoldIncrease::class.java -> GoldIncrease(value)
+            RawPointsIncrease::class.java -> RawPointsIncrease(value)
+            else -> throw IllegalArgumentException("Unknown numeric effet " + typeOfT.typeName)
+        }
+    }
+}
diff --git a/game-engine/src/main/kotlin/org/luxons/sevenwonders/game/data/serializers/ProductionIncreaseSerializer.kt b/game-engine/src/main/kotlin/org/luxons/sevenwonders/game/data/serializers/ProductionIncreaseSerializer.kt
new file mode 100644
index 00000000..578f816b
--- /dev/null
+++ b/game-engine/src/main/kotlin/org/luxons/sevenwonders/game/data/serializers/ProductionIncreaseSerializer.kt
@@ -0,0 +1,51 @@
+package org.luxons.sevenwonders.game.data.serializers
+
+import com.google.gson.JsonDeserializationContext
+import com.google.gson.JsonDeserializer
+import com.google.gson.JsonElement
+import com.google.gson.JsonParseException
+import com.google.gson.JsonPrimitive
+import com.google.gson.JsonSerializationContext
+import com.google.gson.JsonSerializer
+import org.luxons.sevenwonders.game.effects.ProductionIncrease
+import org.luxons.sevenwonders.game.resources.Production
+import java.lang.reflect.Type
+
+class ProductionIncreaseSerializer : JsonSerializer<ProductionIncrease>, JsonDeserializer<ProductionIncrease> {
+
+    override fun serialize(
+        productionIncrease: ProductionIncrease,
+        typeOfSrc: Type,
+        context: JsonSerializationContext
+    ): JsonElement {
+        val production = productionIncrease.production
+        val json = context.serialize(production)
+        return if (!json.isJsonNull && !productionIncrease.isSellable) { JsonPrimitive("(${json.asString})")} else json
+    }
+
+    @Throws(JsonParseException::class)
+    override fun deserialize(
+        json: JsonElement,
+        typeOfT: Type,
+        context: JsonDeserializationContext
+    ): ProductionIncrease {
+        var json = json
+        val productionIncrease = ProductionIncrease()
+
+        var resourcesStr = json.asString
+        val isSellable = !resourcesStr.startsWith("(")
+        if (!isSellable) {
+            resourcesStr = unwrapBrackets(resourcesStr)
+            json = JsonPrimitive(resourcesStr)
+        }
+        productionIncrease.isSellable = isSellable
+
+        val production = context.deserialize<Production>(json, Production::class.java)
+        productionIncrease.production = production
+        return productionIncrease
+    }
+
+    private fun unwrapBrackets(str: String): String {
+        return str.substring(1, str.length - 1)
+    }
+}
diff --git a/game-engine/src/main/kotlin/org/luxons/sevenwonders/game/data/serializers/ProductionSerializer.kt b/game-engine/src/main/kotlin/org/luxons/sevenwonders/game/data/serializers/ProductionSerializer.kt
new file mode 100644
index 00000000..538fdbb4
--- /dev/null
+++ b/game-engine/src/main/kotlin/org/luxons/sevenwonders/game/data/serializers/ProductionSerializer.kt
@@ -0,0 +1,58 @@
+package org.luxons.sevenwonders.game.data.serializers
+
+import com.google.gson.JsonDeserializationContext
+import com.google.gson.JsonDeserializer
+import com.google.gson.JsonElement
+import com.google.gson.JsonNull
+import com.google.gson.JsonParseException
+import com.google.gson.JsonSerializationContext
+import com.google.gson.JsonSerializer
+import org.luxons.sevenwonders.game.resources.Production
+import org.luxons.sevenwonders.game.resources.ResourceType
+import org.luxons.sevenwonders.game.resources.Resources
+import java.lang.reflect.Type
+
+class ProductionSerializer : JsonSerializer<Production>, JsonDeserializer<Production> {
+
+    override fun serialize(production: Production, typeOfSrc: Type, context: JsonSerializationContext): JsonElement {
+        val fixedResources = production.fixedResources
+        val choices = production.alternativeResources
+        return when {
+            fixedResources.isEmpty -> serializeAsChoice(choices, context)
+            choices.isEmpty() -> serializeAsResources(fixedResources, context)
+            else -> throw IllegalArgumentException("Cannot serialize a production with mixed fixed resources and choices")
+        }
+    }
+
+    private fun serializeAsChoice(choices: Set<Set<ResourceType>>, context: JsonSerializationContext): JsonElement {
+        if (choices.isEmpty()) {
+            return JsonNull.INSTANCE
+        }
+        if (choices.size > 1) {
+            throw IllegalArgumentException("Cannot serialize a production with more than one choice")
+        }
+        val str = choices.flatMap { it }.map { it.symbol }.joinToString("/")
+        return context.serialize(str)
+    }
+
+    private fun serializeAsResources(fixedResources: Resources, context: JsonSerializationContext): JsonElement {
+        return context.serialize(fixedResources)
+    }
+
+    @Throws(JsonParseException::class)
+    override fun deserialize(json: JsonElement, typeOfT: Type, context: JsonDeserializationContext): Production {
+        val resourcesStr = json.asString
+        val production = Production()
+        if (resourcesStr.contains("/")) {
+            production.addChoice(*createChoice(resourcesStr))
+        } else {
+            val fixedResources = context.deserialize<Resources>(json, Resources::class.java)
+            production.addAll(fixedResources)
+        }
+        return production
+    }
+
+    private fun createChoice(choiceStr: String): Array<ResourceType> {
+        return choiceStr.split("/").map { ResourceType.fromSymbol(it) }.toTypedArray()
+    }
+}
diff --git a/game-engine/src/main/kotlin/org/luxons/sevenwonders/game/data/serializers/ResourceTypeSerializer.kt b/game-engine/src/main/kotlin/org/luxons/sevenwonders/game/data/serializers/ResourceTypeSerializer.kt
new file mode 100644
index 00000000..1de9334a
--- /dev/null
+++ b/game-engine/src/main/kotlin/org/luxons/sevenwonders/game/data/serializers/ResourceTypeSerializer.kt
@@ -0,0 +1,29 @@
+package org.luxons.sevenwonders.game.data.serializers
+
+import java.lang.reflect.Type
+
+import org.luxons.sevenwonders.game.resources.ResourceType
+
+import com.google.gson.JsonDeserializationContext
+import com.google.gson.JsonDeserializer
+import com.google.gson.JsonElement
+import com.google.gson.JsonParseException
+import com.google.gson.JsonPrimitive
+import com.google.gson.JsonSerializationContext
+import com.google.gson.JsonSerializer
+
+internal class ResourceTypeSerializer : JsonSerializer<ResourceType>, JsonDeserializer<ResourceType> {
+
+    override fun serialize(type: ResourceType, typeOfSrc: Type, context: JsonSerializationContext): JsonElement {
+        return JsonPrimitive(type.symbol!!)
+    }
+
+    @Throws(JsonParseException::class)
+    override fun deserialize(json: JsonElement, typeOfT: Type, context: JsonDeserializationContext): ResourceType {
+        val str = json.asString
+        if (str.isEmpty()) {
+            throw IllegalArgumentException("Empty string is not a valid resource type")
+        }
+        return ResourceType.fromSymbol(str[0])
+    }
+}
diff --git a/game-engine/src/main/kotlin/org/luxons/sevenwonders/game/data/serializers/ResourceTypesSerializer.kt b/game-engine/src/main/kotlin/org/luxons/sevenwonders/game/data/serializers/ResourceTypesSerializer.kt
new file mode 100644
index 00000000..9ba21043
--- /dev/null
+++ b/game-engine/src/main/kotlin/org/luxons/sevenwonders/game/data/serializers/ResourceTypesSerializer.kt
@@ -0,0 +1,39 @@
+package org.luxons.sevenwonders.game.data.serializers
+
+import java.lang.reflect.Type
+
+import org.luxons.sevenwonders.game.resources.ResourceType
+
+import com.google.gson.JsonDeserializationContext
+import com.google.gson.JsonDeserializer
+import com.google.gson.JsonElement
+import com.google.gson.JsonParseException
+import com.google.gson.JsonPrimitive
+import com.google.gson.JsonSerializationContext
+import com.google.gson.JsonSerializer
+
+internal class ResourceTypesSerializer : JsonSerializer<List<ResourceType>>, JsonDeserializer<List<ResourceType>> {
+
+    override fun serialize(
+        resources: List<ResourceType>,
+        typeOfSrc: Type,
+        context: JsonSerializationContext
+    ): JsonElement {
+        val s = resources.map { it.symbol }.joinToString("")
+        return JsonPrimitive(s)
+    }
+
+    @Throws(JsonParseException::class)
+    override fun deserialize(
+        json: JsonElement,
+        typeOfT: Type,
+        context: JsonDeserializationContext
+    ): List<ResourceType> {
+        val s = json.asString
+        val resources = ArrayList<ResourceType>()
+        for (c in s.toCharArray()) {
+            resources.add(ResourceType.fromSymbol(c))
+        }
+        return resources
+    }
+}
diff --git a/game-engine/src/main/kotlin/org/luxons/sevenwonders/game/data/serializers/ResourcesSerializer.kt b/game-engine/src/main/kotlin/org/luxons/sevenwonders/game/data/serializers/ResourcesSerializer.kt
new file mode 100644
index 00000000..2baf7a35
--- /dev/null
+++ b/game-engine/src/main/kotlin/org/luxons/sevenwonders/game/data/serializers/ResourcesSerializer.kt
@@ -0,0 +1,34 @@
+package org.luxons.sevenwonders.game.data.serializers
+
+import java.lang.reflect.Type
+import java.util.stream.Collectors
+
+import org.luxons.sevenwonders.game.resources.ResourceType
+import org.luxons.sevenwonders.game.resources.Resources
+
+import com.google.gson.JsonDeserializationContext
+import com.google.gson.JsonDeserializer
+import com.google.gson.JsonElement
+import com.google.gson.JsonNull
+import com.google.gson.JsonParseException
+import com.google.gson.JsonPrimitive
+import com.google.gson.JsonSerializationContext
+import com.google.gson.JsonSerializer
+
+internal class ResourcesSerializer : JsonSerializer<Resources>, JsonDeserializer<Resources> {
+
+    override fun serialize(resources: Resources, typeOfSrc: Type, context: JsonSerializationContext): JsonElement {
+        val s = resources.asList().map { it.symbol }.joinToString("")
+        return if (s.isEmpty()) JsonNull.INSTANCE else JsonPrimitive(s)
+    }
+
+    @Throws(JsonParseException::class)
+    override fun deserialize(json: JsonElement, typeOfT: Type, context: JsonDeserializationContext): Resources {
+        val s = json.asString
+        val resources = Resources()
+        for (c in s.toCharArray()) {
+            resources.add(ResourceType.fromSymbol(c), 1)
+        }
+        return resources
+    }
+}
diff --git a/game-engine/src/main/kotlin/org/luxons/sevenwonders/game/data/serializers/ScienceProgressSerializer.kt b/game-engine/src/main/kotlin/org/luxons/sevenwonders/game/data/serializers/ScienceProgressSerializer.kt
new file mode 100644
index 00000000..ed383d63
--- /dev/null
+++ b/game-engine/src/main/kotlin/org/luxons/sevenwonders/game/data/serializers/ScienceProgressSerializer.kt
@@ -0,0 +1,57 @@
+package org.luxons.sevenwonders.game.data.serializers
+
+import com.google.gson.JsonDeserializationContext
+import com.google.gson.JsonDeserializer
+import com.google.gson.JsonElement
+import com.google.gson.JsonNull
+import com.google.gson.JsonParseException
+import com.google.gson.JsonPrimitive
+import com.google.gson.JsonSerializationContext
+import com.google.gson.JsonSerializer
+import org.luxons.sevenwonders.game.boards.Science
+import org.luxons.sevenwonders.game.boards.ScienceType
+import org.luxons.sevenwonders.game.effects.ScienceProgress
+import java.lang.reflect.Type
+
+internal class ScienceProgressSerializer : JsonSerializer<ScienceProgress>, JsonDeserializer<ScienceProgress> {
+
+    override fun serialize(
+        scienceProgress: ScienceProgress,
+        typeOfSrc: Type,
+        context: JsonSerializationContext
+    ): JsonElement {
+        val science = scienceProgress.science
+
+        if (science.size() > 1) {
+            throw UnsupportedOperationException("Cannot serialize science containing more than one element")
+        }
+
+        for (type in ScienceType.values()) {
+            val quantity = science.getQuantity(type)
+            if (quantity == 1) {
+                return context.serialize(type)
+            }
+        }
+
+        return if (science.jokers == 1) JsonPrimitive("any") else JsonNull.INSTANCE
+    }
+
+    @Throws(JsonParseException::class)
+    override fun deserialize(json: JsonElement, typeOfT: Type, context: JsonDeserializationContext): ScienceProgress {
+        val s = json.asString
+        val scienceProgress = ScienceProgress()
+        val science = Science()
+        if ("any" == s) {
+            science.addJoker(1)
+        } else {
+            science.add(deserializeScienceType(json, context), 1)
+        }
+        scienceProgress.science = science
+        return scienceProgress
+    }
+
+    private fun deserializeScienceType(json: JsonElement, context: JsonDeserializationContext): ScienceType {
+        return context.deserialize<ScienceType>(json, ScienceType::class.java)
+                ?: throw IllegalArgumentException("Invalid science type " + json.asString)
+    }
+}
diff --git a/game-engine/src/test/java/org/luxons/sevenwonders/game/data/definitions/WonderSidePickMethodTest.java b/game-engine/src/test/java/org/luxons/sevenwonders/game/data/definitions/WonderSidePickMethodTest.java
index 0b7de3d6..f45ad4ea 100644
--- a/game-engine/src/test/java/org/luxons/sevenwonders/game/data/definitions/WonderSidePickMethodTest.java
+++ b/game-engine/src/test/java/org/luxons/sevenwonders/game/data/definitions/WonderSidePickMethodTest.java
@@ -8,6 +8,8 @@ import org.junit.experimental.theories.DataPoints;
 import org.junit.experimental.theories.Theories;
 import org.junit.experimental.theories.Theory;
 import org.junit.runner.RunWith;
+import org.luxons.sevenwonders.game.data.WonderSide;
+import org.luxons.sevenwonders.game.data.WonderSidePickMethod;
 
 import static org.junit.Assert.assertEquals;