Resume from the last checkpoint, celebrate reaching the end with fireworks, continue endlessly afterwards and start the run right on spawn

src/main/java/eu/mhsl/minecraft/endlessjumper/EndlessJumper.java

@@ -23,7 +23,6 @@ import net.minestom.server.instance.InstanceContainer;
 import net.minestom.server.instance.InstanceManager;
 import net.minestom.server.instance.block.Block;
 import net.minestom.server.item.ItemStack;
-import net.minestom.server.timer.TaskSchedule;
 
 import java.io.IOException;
 import java.nio.file.Files;
@@ -37,6 +36,7 @@ public class EndlessJumper {
 
     public static void main(String[] args) throws IOException {
         MinecraftServer server = MinecraftServer.init(new Auth.Velocity(readForwardingSecret()));
+        Progress.load();
         InstanceManager instanceManager = MinecraftServer.getInstanceManager();
         GlobalEventHandler eventHandler = MinecraftServer.getGlobalEventHandler();
         PlayerSkin skin = PlayerSkin.fromUsername("Notch");
@@ -52,18 +52,16 @@ public class EndlessJumper {
 
             p.setSkin(skin);
             event.setSpawningInstance(world);
-
-            // an den Spieler gebunden: läuft nicht mehr, wenn er vorher geht
-            p.scheduler().buildTask(() -> games.put(p, new JumpGenerator(START, p, world)))
-                .delay(TaskSchedule.seconds(3))
-                .schedule();
         });
 
         eventHandler.addListener(PlayerSpawnEvent.class, event -> {
             if(!event.isFirstSpawn()) return;
-            event.getPlayer().setCanPickupItem(true);
-            ScoreTab.join(event.getPlayer());
-            Jokers.giveStart(event.getPlayer());
+            Player p = event.getPlayer();
+            p.setCanPickupItem(true);
+            ScoreTab.join(p);
+            Jokers.giveStart(p);
+            // sobald der Spieler in der Welt steht, geht es los
+            games.put(p, new JumpGenerator(START, Progress.checkpoint(p.getUuid()), p, p.getInstance()));
         });
 
         eventHandler.addListener(PlayerMoveEvent.class, event -> {