feat: add support for the GamestateEvent in applyEvent

src/main/java/uulm/teamname/marvelous/gamelibrary/gamelogic/GameInstance.java

@@ -34,7 +34,7 @@ public class GameInstance {
     /**
      * Checks an array of {@link Request}s for validity and automatically applies them if valid.
      * @param requests The requests to check
-     * @return The list of resulting {@link Event}s or `null` if the check failed
+     * @return The list of resulting {@link Event}s or {@link Optional#empty()} if the check failed
      */
     public Optional<List<Event>> checkRequestsAndApply(ArrayList<Request> requests) {
         if(manager.processRequests(requests, true)) {

src/main/java/uulm/teamname/marvelous/gamelibrary/gamelogic/GameLogic.java

@@ -13,10 +13,7 @@ import uulm.teamname.marvelous.gamelibrary.requests.RequestType;
 import java.awt.*;
 import java.awt.geom.Line2D;
 import java.awt.geom.Point2D;
-import java.util.ArrayList;
+import java.util.*;
-import java.util.Collections;
-import java.util.HashSet;
-import java.util.Random;
 
 /** Contains game logic handling. */
 public class GameLogic {
@@ -517,6 +514,22 @@ public class GameLogic {
 
                 state.winConditions.updateValue(target.id.type, WinCondition.MaxStones, target.inventory.getSize());
             }
+            case GamestateEvent -> {
+                GamestateEvent data = (GamestateEvent)event;
+
+                state.entities.clear();
+                state.entities.addEntities(data.entities);
+
+                state.mapSize.set(data.mapSize);
+
+                state.turnOrder = new ArrayList<>(Arrays.asList(data.turnOrder));
+
+                state.activeCharacter = data.activeCharacter;
+
+                state.stoneCooldown.import_(data.stoneCooldowns);
+
+                state.won = data.winCondition;
+            }
         }
     }
 

src/main/java/uulm/teamname/marvelous/gamelibrary/gamelogic/StoneCooldownManager.java

@@ -82,4 +82,14 @@ public class StoneCooldownManager {
         }
         return data;
     }
+
+    /**
+     * Imports the cooldowns from an array ordered according to the enum.
+     * @param data An array containing every cooldown
+     */
+    public void import_(Integer[] data) {
+        for(int i = 0; i < data.length; i++) {
+            cooldowns.put(StoneType.valueOf(i), data[i]);
+        }
+    }
 }

src/test/java/uulm/teamname/marvelous/gamelibrary/gamelogic/GameLogicTest.java

@@ -7,6 +7,7 @@ import uulm.teamname.marvelous.gamelibrary.IntVector2;
 import uulm.teamname.marvelous.gamelibrary.config.*;
 import uulm.teamname.marvelous.gamelibrary.entities.*;
 import uulm.teamname.marvelous.gamelibrary.entities.Character;
+import uulm.teamname.marvelous.gamelibrary.events.Event;
 import uulm.teamname.marvelous.gamelibrary.requests.*;
 
 import java.util.*;
@@ -167,6 +168,16 @@ class GameLogicTest {
     }
 
 
+    @Test
+    void testGamestateEvent() {
+        GameInstance a = new GameInstance(partyConfig, characterConfig, scenarioConfig);
+        GameInstance b = new GameInstance(partyConfig, characterConfig, scenarioConfig);
+
+        b.applyEvents(a.startGame(player1Selection, player2Selection));
+
+        assertEquals(a.toString(), b.toString(), "Second GameInstance copies the state successfully");
+    }
+
     @Test
     void testRasterize() {
         ArrayList<IntVector2> result = GameLogic.rasterize(new IntVector2(0, 0), new IntVector2(1, 1), false, false);