added random height variations for elytra race gates

src/main/java/eu/mhsl/minenet/minigames/instance/game/stateless/types/elytraRace/ElytraRace.java

@@ -33,6 +33,7 @@ import org.jetbrains.annotations.NotNull;
 import java.time.Duration;
 import java.util.HashMap;
 import java.util.Map;
+import java.util.Random;
 import java.util.concurrent.CompletableFuture;
 
 
@@ -183,7 +184,8 @@ public class ElytraRace extends StatelessGame {
     }
 
     private Point getRingPositionAtZ(int z) {
-        return new Pos(vale.getXShiftAtZ(z), -45, z);
+        Random random = new Random(this.hashCode() + z);
+        return new Pos(vale.getXShiftAtZ(z), -45 + random.nextInt(-5, 15), z);
     }
 
     private CompletableFuture<Void> generateRing(int zPos) {