Reintroduced trace id

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

@@ -36,7 +36,7 @@ public class TraceManager implements Listener {
     /**
      * List of all current traces
      */
-    private final List<Trace> traces = new ArrayList<>();
+    private final Map<Integer, Trace> traces = new HashMap<>();
 
     /**
      * A map saving the view flags used by Players
@@ -48,6 +48,11 @@ public class TraceManager implements Listener {
      */
     private final Map<Player, BundleFilter> bundleFilterMap = new HashMap<>();
 
+    /**
+     * Utility variable to keep track of the next open trace id;
+     */
+    private int nextOpenId = 0;
+
     /** Adds a new trace to the global record
      *
      * @param trace Trace to be added
@@ -55,17 +60,18 @@ public class TraceManager implements Listener {
     protected void add(Trace trace){
         for(Player player: viewFlagMap.keySet())
             trace.render(player, viewFlagMap.get(player), bundleFilterMap.get(player));
-        traces.add(trace);
+        traces.put(nextOpenId, trace);
+        nextOpenId++;
     }
 
     /** Removes the trace with the given id
      *
-     * @param index index of the trace to be removed
+     * @param id id of the trace to be removed
      */
-    public void remove(int index){
+    public void remove(int id){
         for(Player player: viewFlagMap.keySet())
-            traces.get(index).hide(player);
+            traces.get(id).hide(player);
-        traces.remove(index);
+        traces.remove(id);
     }
 
     /** Clears all traces
@@ -73,9 +79,10 @@ public class TraceManager implements Listener {
      */
     public void clear(){
         for (Player player: viewFlagMap.keySet())
-            for(Trace trace: traces)
+            for(Trace trace: traces.values())
                 trace.hide(player);
         traces.clear();
+        nextOpenId = 0;
     }
 
     /** Methode to get all traces in a certain region
@@ -84,7 +91,7 @@ public class TraceManager implements Listener {
      * @return All traces recorded in the given Region
      */
     public Set<Trace> get(Region region){
-        return traces.stream()
+        return traces.values().stream()
                 .filter((Trace trace) -> trace.getRegion() == region)
                 .collect(Collectors.toSet());
     }
@@ -102,10 +109,10 @@ public class TraceManager implements Listener {
 
     /** Methode to get all traces
      *
-     * @return fresh set of all current traces
+     * @return fresh list of all current traces
      */
     public List<Trace> getAll(){
-        return new ArrayList<>(traces);
+        return new ArrayList<>(traces.values());
     }
 
     /** Toggles trace show on for player
@@ -118,7 +125,7 @@ public class TraceManager implements Listener {
         viewFlagMap.put(player, viewFlags);
         bundleFilterMap.put(player, bundleFilter);
 
-        for(Trace trace: traces)
+        for(Trace trace: traces.values())
             trace.render(player, viewFlags, bundleFilter);
     }
 
@@ -127,7 +134,7 @@ public class TraceManager implements Listener {
      * @param player
      */
     public void hide(Player player){
-        for(Trace trace: traces)
+        for(Trace trace: traces.values())
             trace.hide(player);
 
         viewFlagMap.remove(player);