cleanup: optimize imports, remove unused code, fix warnings

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

@@ -45,6 +45,8 @@ public class GameInstance {
 
             result.addAll(result2);
 
+            result.add(GameLogic.buildGameStateEvent(_state));
+
             return Optional.of(result);
         }
 
@@ -102,6 +104,10 @@ public class GameInstance {
         manager.applyEvents(events);
     }
 
+    protected GameState getState() {
+        return _state;
+    }
+
     @Override
     public String toString() {
         StringBuilder sb = new StringBuilder();

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

@@ -429,7 +429,7 @@ class GameLogic {
      * Verifies that a {@link Character} is alive.
      */
     private static void requireAlive(Character entity) throws InvalidRequestException {
-        if(!entity.isAlive() || !entity.isActive()) {
+        if(!entity.isAlive()) {
             throw new InvalidRequestException();
         }
     }

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

@@ -1,7 +1,9 @@
 package uulm.teamname.marvelous.gamelibrary.gamelogic;
 
 import uulm.teamname.marvelous.gamelibrary.IntVector2;
-import uulm.teamname.marvelous.gamelibrary.entities.*;
+import uulm.teamname.marvelous.gamelibrary.entities.Entity;
+import uulm.teamname.marvelous.gamelibrary.entities.EntityID;
+import uulm.teamname.marvelous.gamelibrary.entities.StoneType;
 import uulm.teamname.marvelous.gamelibrary.json.config.CharacterConfig;
 import uulm.teamname.marvelous.gamelibrary.json.config.PartyConfig;
 import uulm.teamname.marvelous.gamelibrary.json.config.ScenarioConfig;

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

@@ -12,7 +12,7 @@ class GameStateManager {
     private final GameState state;
 
     /** The queue of {@link Event}s to be applied during {@link Request} processing */
-    private final ArrayDeque<Event> queue = new ArrayDeque<Event>();
+    private final ArrayDeque<Event> queue = new ArrayDeque<>();
 
     /**
      * Constructs a new {@link GameStateManager}.

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

@@ -1,9 +0,0 @@
-package uulm.teamname.marvelous.gamelibrary.gamelogic;
-
-/** Specifies a participant type. */
-public enum ParticipantType {
-    None,
-    Player1,
-    Player2,
-    Spectator
-}