Fix synchronization Deadlock

BauSystem_15/src/de/steamwar/bausystem/tracer/PlayerTraceCache_15.java

@@ -23,6 +23,8 @@ public class PlayerTraceCache_15 {
     private float[] pLocation;
     private float locationThreshold = square(10.0F);
 
+    private boolean hiding = false;
+
     public PlayerTraceCache_15() {
         this.pLocation = new float[]{0.0F, 0.0F, 0.0F};
     }
@@ -49,7 +51,8 @@ public class PlayerTraceCache_15 {
         return false;
     }
 
-    public synchronized void show(Player player, TNTShowCallback_15.ShowMode showMode) {
+    public void show(Player player, TNTShowCallback_15.ShowMode showMode) {
+        if (hiding) return;
         if (positions.length == 0 || positions.length % 3 != 0) return;
         for (int i = 0; i < positions.length; i += 3) {
             float x = positions[i + 0];
@@ -84,6 +87,7 @@ public class PlayerTraceCache_15 {
     }
 
     public synchronized void hide(Player player) {
+        hiding = true;
         if (positions.length == 0 || positions.length % 3 != 0) return;
         for (int i = 0; i < positions.length; i += 3) {
             float x = positions[i + 0];
@@ -102,6 +106,7 @@ public class PlayerTraceCache_15 {
             hideBlock(player, x, y + 0.49F, z);
         }
         updatePoints = new float[0];
+        hiding = false;
     }
 
     private static void showCorner(Player player, float x, float y, float z, Particle particle) {

BauSystem_Main/src/de/steamwar/bausystem/tracer/TNTTracer15.java

@@ -326,6 +326,7 @@ public class TNTTracer15 {
             Bukkit.getOnlinePlayers().forEach(player -> player.spigot().sendMessage(ChatMessageType.ACTION_BAR, TextComponent.fromLegacyText("§7Automatischer TNT-Tracer §8- §aAufnahme gestoppt")));
             status = Status.IDLE_AUTO;
         }
+        ShowManager.dirty();
         if (task != null) task.cancel();
         if (tntFrames.getLast().finish()) {
             tntFrames.removeLast();

BauSystem_Main/src/de/steamwar/bausystem/tracer/trace/ShowManager.java

@@ -15,6 +15,14 @@ public class ShowManager {
         TNTTracer15.worldInit();
     }
 
+    public static void dirty() {
+        for (Map.Entry<Player, ShowStatus> entry : showMap.entrySet()) {
+            if (entry.getValue().getShow() != ShowStatus.Show.NONE) {
+                entry.getValue().dirty = true;
+            }
+        }
+    }
+
     public static void remove(Player player) {
         showMap.remove(player);
     }

BauSystem_Main/src/de/steamwar/bausystem/tracer/trace/ShowStatus.java

@@ -16,7 +16,7 @@ public class ShowStatus {
 
     private Player p;
 
-    private boolean dirty = false;
+    boolean dirty = false;
 
     public ShowStatus(Player p) {
         this.p = p;