Do not crash when no DB is present.

src/main/java/dev/zontreck/libzontreck/LibZontreck.java

@@ -120,7 +120,12 @@ public class LibZontreck {
         ALIVE=true;
 
         ServerConfig.init();
-        DatabaseWrapper.start();
+        try {
+            DatabaseWrapper.start();
+        }catch(RuntimeException e) {
+            LOGGER.warn("Database not configured properly, it will not be available.");
+            DatabaseWrapper.invalidate();
+        }
 
         CURRENT_SIDE = LogicalSide.SERVER;
 
@@ -132,6 +137,8 @@ public class LibZontreck {
             BlockRestoreQueueRegistry.init(level);
         }
 
+        if(!DatabaseWrapper.hasDB)return;
+
         try {
             DatabaseMigrations.initMigrations();
         } catch (SQLException e) {

src/main/java/dev/zontreck/libzontreck/memory/world/DatabaseWrapper.java

@@ -8,10 +8,15 @@ import java.sql.*;
 
 public class DatabaseWrapper {
     private Connection connection;
+    public static boolean hasDB = true;
 
     private static DatabaseWrapper instance;
 
     public static DatabaseWrapper get() {
+        if(!hasDB) {
+            throw new RuntimeException("Error: Database is not set up");
+        }
+
         if (instance == null)
             start();
 
@@ -48,6 +53,11 @@ public class DatabaseWrapper {
         }
     }
 
+    public static void invalidate() {
+        instance=null;
+        hasDB=false;
+    }
+
     private void restart() {
 
         LibZontreck.LOGGER.info("Reconnecting to database...");