Made auto-traces finish

BauSystem_Main/src/de/steamwar/bausystem/features/tracer/Recorder.java

@@ -67,8 +67,22 @@ public class Recorder implements Listener {
      */
     private final Set<Region> autoTraceRegions = new HashSet<>();
 
+    /**
+     *  Counters for how long no tnt was seen in an active auto trace region
+     */
+    private final Map<Region, Integer> noTntRecordedCounter = new HashMap<>();
+
+    /**
+     * Amount of ticks, after wich an auto-trace is stopped, if no tnt where seen
+     */
+    private final long AUTO_TRACE_STOP_TRESHHOLD = 120;
+
     public Recorder(){
-        BauSystem.runTaskTimer(BauSystem.getInstance(), this::record, 0, 1);
+        BauSystem.runTaskTimer(BauSystem.getInstance(), () -> {
+            noTntRecordedCounter.replaceAll((region, counter) -> counter + 1);
+            record();
+            checkForAutoTraceFinish();
+        }, 0, 1);
     }
 
     /** Toggles auto trace for the given region
@@ -82,13 +96,24 @@ public class Recorder implements Listener {
             autoTraceRegions.add(region);
     }
 
+    /** Makes checks for whether auto traces finished
+     *
+     */
+    public void checkForAutoTraceFinish(){
+        for(Region region: autoTraceRegions)
+            if(autoTraceRegions.contains(region) && noTntRecordedCounter.get(region) > AUTO_TRACE_STOP_TRESHHOLD){
+                stopRecording(region);
+                autoTraceRegions.remove(region);
+            }
+    }
+
     /** Starts a recording at the given region
      *
      *  @param region region to be recorded
-     *  @
      */
     public void startRecording(Region region){
         if(activeTraces.containsKey(region)) return;
+        if(autoTraceRegions.contains(region)) noTntRecordedCounter.put(region, 0);
         Trace trace = new Trace(region);
         activeTraces.put(region, trace);
     }
@@ -115,6 +140,9 @@ public class Recorder implements Listener {
    private void record(){
         for(Region region : activeTraces.keySet()){
             Trace trace = activeTraces.get(region);
+            if(trackedTNT.getOrDefault(region, Collections.emptyList()).size() > 0)
+                noTntRecordedCounter.put(region, 0);
+
             for(TNTPrimed tnt : trackedTNT.getOrDefault(region, Collections.emptyList())){
                 record(tnt, trace);
             }