Fix NPEs

src/main/java/world/bentobox/limits/Limits.java

@@ -134,8 +134,8 @@ public class Limits extends Addon {
     private void registerPlaceholders(GameModeAddon gm) {
         if (getPlugin().getPlaceholdersManager() == null) return;
         Arrays.stream(Material.values())
-                .filter(m -> m.isBlock())
+        .filter(m -> m.isBlock())
-                .forEach(m -> registerCountAndLimitPlaceholders(m, gm));
+        .forEach(m -> registerCountAndLimitPlaceholders(m, gm));
     }
 
     /**
@@ -171,8 +171,7 @@ public class Limits extends Addon {
         if (is == null) {
             return 0;
         }
-        return getBlockLimitListener().getIsland(gm.getIslands().getIsland(gm.getOverWorld(), user).getUniqueId()).
+        return getBlockLimitListener().getIsland(gm.getIslands().getIsland(gm.getOverWorld(), user).getUniqueId()).getBlockCount(m);
-                getBlockCount(m);
     }
 
     /**

src/main/java/world/bentobox/limits/commands/LimitTab.java

@@ -104,9 +104,13 @@ public class LimitTab implements Tab {
         Map<EntityGroup, Integer> groupmap = addon.getSettings().getGroupLimitDefinitions().stream().collect(Collectors.toMap(e -> e, e -> e.getLimit()));
         Map<String, EntityGroup> groupbyname = groupmap.keySet().stream().collect(Collectors.toMap(e -> e.getName(), e -> e));
         // Merge in any permission-based limits
-        if (ibc != null) ibc.getEntityGroupLimits().entrySet().stream()
+        if (ibc == null) {
+            return;
+        }
+        ibc.getEntityGroupLimits().entrySet().stream()
         .filter(e -> groupbyname.containsKey(e.getKey()))
         .forEach(e -> groupmap.put(groupbyname.get(e.getKey()), e.getValue()));
+
         ibc.getEntityGroupLimitsOffset().entrySet().forEach(o ->
         groupmap.put(groupbyname.get(o.getKey()), (groupmap.getOrDefault(o.getKey(), 0) + o.getValue())));
         groupmap.forEach((v, limit) -> {
@@ -186,7 +190,7 @@ public class LimitTab implements Tab {
             pib.icon(B2M.getOrDefault(en.getKey(), en.getKey()));
 
             int count = ibc == null ? 0 : ibc.getBlockCounts().getOrDefault(en.getKey(), 0);
-            int value = en.getValue() + ibc.getBlockLimitsOffset().getOrDefault(en.getKey(), 0);
+            int value = en.getValue() + (ibc == null ? 0 : ibc.getBlockLimitsOffset().getOrDefault(en.getKey(), 0));
             String color = count >= value ? user.getTranslation("island.limits.max-color") : user.getTranslation("island.limits.regular-color");
             pib.description(color
                     + user.getTranslation("island.limits.block-limit-syntax",

src/main/java/world/bentobox/limits/listeners/JoinListener.java

@@ -20,6 +20,7 @@ import org.bukkit.permissions.PermissionAttachmentInfo;
 import org.eclipse.jdt.annotation.NonNull;
 import org.eclipse.jdt.annotation.Nullable;
 
+import world.bentobox.bentobox.BentoBox;
 import world.bentobox.bentobox.api.events.island.IslandEvent;
 import world.bentobox.bentobox.api.events.island.IslandEvent.Reason;
 import world.bentobox.bentobox.api.events.team.TeamSetownerEvent;
@@ -52,6 +53,7 @@ public class JoinListener implements Listener {
      */
     public void checkPerms(Player player, String permissionPrefix, String islandId, String gameMode) {
         IslandBlockCount ibc = addon.getBlockLimitListener().getIsland(islandId);
+        BentoBox.getInstance().logDebug("Check perms ibc == null? " + ibc == null);
         // Check permissions
         if (ibc != null) {
             // Clear permission limits
@@ -60,7 +62,7 @@ public class JoinListener implements Listener {
             ibc.getBlockLimits().clear();
         }
         for (PermissionAttachmentInfo perms : player.getEffectivePermissions()) {
-            if (!perms.getValue() 
+            if (!perms.getValue()
                     || !perms.getPermission().startsWith(permissionPrefix)
                     || badSyntaxCheck(perms, player.getName(), permissionPrefix)) {
                 continue;
@@ -79,6 +81,8 @@ public class JoinListener implements Listener {
             }
             // Make an ibc if required
             if (ibc == null) {
+
+                BentoBox.getInstance().logDebug("Making new IBC");
                 ibc = new IslandBlockCount(islandId, gameMode);
             }
             // Get the value
@@ -93,7 +97,9 @@ public class JoinListener implements Listener {
             runNullCheckAndSet(ibc, l);
         }
         // Check removed permissions
-
+        if (ibc == null) {
+            BentoBox.getInstance().logDebug("IBC is still null");
+        }
         // If any changes have been made then store it - don't make files unless they are needed
         if (ibc != null) addon.getBlockLimitListener().setIsland(islandId, ibc);
     }
@@ -145,7 +151,7 @@ public class JoinListener implements Listener {
                 ibc.setEntityLimit(et, Math.max(ibc.getEntityLimit(et), value));
             }
         }
-        
+
     }
 
     private void logError(String name, String perm, String error) {
@@ -163,6 +169,7 @@ public class JoinListener implements Listener {
                 && !e.getReason().equals(Reason.REGISTERED)) {
             return;
         }
+        BentoBox.getInstance().logDebug("Island Event " + e.getReason());
         setOwnerPerms(e.getIsland(), e.getOwner());
     }