Fix ETA message

Signed-off-by: yoyosource <yoyosource@nidido.de>

BauSystem_Main/src/de/steamwar/bausystem/features/slaves/laufbau/states/LaufbauState.java

@@ -22,9 +22,8 @@ package de.steamwar.bausystem.features.slaves.laufbau.states;
 import de.steamwar.bausystem.BauSystem;
 import org.bukkit.entity.Player;
 
-import java.text.SimpleDateFormat;
-import java.time.Instant;
-import java.util.Date;
+import java.time.LocalTime;
+import java.time.format.DateTimeFormatter;
 
 public interface LaufbauState {
 
@@ -35,7 +34,8 @@ public interface LaufbauState {
     void next();
 
     default String eta(Player p, long start, int done, int total) {
-        if (done == 0) return "";
-        return new SimpleDateFormat(BauSystem.MESSAGE.parse("TIME", p)).format(Date.from(Instant.ofEpochMilli((System.currentTimeMillis() - start) / done * total)));
+        if (total == 0) return "";
+        long elapsed = System.currentTimeMillis() - start;
+        return LocalTime.ofNanoOfDay((long) (elapsed / (done / (double) total) - elapsed) * 1000000).format(DateTimeFormatter.ofPattern(BauSystem.MESSAGE.parse("TIME", p)));
     }
 }