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

@@ -32,8 +32,9 @@ import lombok.Getter;
 import org.bukkit.entity.Player;
 
 import java.util.*;
+import java.util.stream.Collectors;
 
-public class Trace {
+public class Trace { // TODO: Add UUID for file saving and so on!
     /**
      * Region this trace has been recorded in
      */
@@ -61,8 +62,13 @@ public class Trace {
     /**
      * List of all used ids
      */
-    @Getter
+    public List<String> getUsedIds() {
-    private final List<String> usedIds = new ArrayList();
+        return getRecords()
+                .stream()
+                .map(TNTRecord::getTntId)
+                .map(i -> i + "")
+                .collect(Collectors.toList());
+    }
 
     /**
      * A map of players -> REntityServers for rendering traces to a player
@@ -89,9 +95,7 @@ public class Trace {
      * @return next open record id
      */
     protected int getAndIncrementNextOpenRecordId() {
-        nextOpenRecordId++;
+        return ++nextOpenRecordId;
-        usedIds.add(Integer.toString(nextOpenRecordId));
-        return nextOpenRecordId;
     }
 
     /**

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

@@ -27,7 +27,6 @@ import org.bukkit.entity.Player;
 import org.bukkit.event.Listener;
 
 import java.util.*;
-import java.util.stream.Collectors;
 
 @Linked
 public class TraceManager implements Listener {
@@ -36,6 +35,8 @@ public class TraceManager implements Listener {
      */
     private final Map<Integer, Trace> traces = new HashMap<>();
 
+    private final Map<Region, Map<Integer, Trace>> tracesByRegion = new HashMap<>();
+
     /**
      * A map saving the view flags used by Players
      */
@@ -62,6 +63,7 @@ public class TraceManager implements Listener {
             trace.render(player, viewFlagMap.get(player), bundleFilterMap.get(player));
         }
         traces.put(nextOpenId, trace);
+        tracesByRegion.computeIfAbsent(trace.getRegion(), region -> new HashMap<>()).put(nextOpenId, trace);
         nextOpenId++;
         return nextOpenId;
     }
@@ -77,7 +79,10 @@ public class TraceManager implements Listener {
         for (Player player : viewFlagMap.keySet()) {
             traces.get(id).hide(player);
         }
-        traces.remove(id);
+        Trace trace = traces.remove(id);
+        if (trace != null) {
+            tracesByRegion.get(trace.getRegion()).remove(id);
+        }
         return true;
     }
 
@@ -91,6 +96,7 @@ public class TraceManager implements Listener {
             }
         }
         traces.clear();
+        tracesByRegion.clear();
         nextOpenId = 0;
     }
 
@@ -100,10 +106,8 @@ public class TraceManager implements Listener {
      * @param region Region to look for traces in
      * @return All traces recorded in the given Region
      */
-    public Set<Trace> get(Region region) {
+    public Collection<Trace> get(Region region) {
-        return traces.values().stream()
+        return tracesByRegion.getOrDefault(region, Collections.emptyMap()).values();
-                .filter((Trace trace) -> trace.getRegion() == region)
-                .collect(Collectors.toSet());
     }
 
     /**
@@ -122,10 +126,10 @@ public class TraceManager implements Listener {
     /**
      * Methode to get all traces
      *
-     * @return fresh list of all current traces
+     * @return internal list of all current traces
      */
-    public List<Trace> getAll() {
+    public Collection<Trace> getAll() {
-        return new ArrayList<>(traces.values());
+        return traces.values();
     }
 
     /**