Implements Sentinel support

pom.xml

@@ -120,5 +120,18 @@
             <version>1.0.0-SNAPSHOT</version>
             <scope>provided</scope>
         </dependency>
+        <dependency>
+            <groupId>org.mcmonkey</groupId>
+            <artifactId>sentinel</artifactId>
+            <version>2.7.0-SNAPSHOT</version>
+            <type>jar</type>
+            <scope>provided</scope>
+            <exclusions>
+                <exclusion>
+                    <groupId>*</groupId>
+                    <artifactId>*</artifactId>
+                </exclusion>
+            </exclusions>
+        </dependency>
     </dependencies>
 </project>

src/main/java/net/knarcraft/dynmapcitizens/DynmapCitizens.java

@@ -57,7 +57,7 @@ public final class DynmapCitizens extends JavaPlugin {
                     handler.updateMarkers();
                 }
             }
-        }, 5 * 20, 120 * 20);
+        }, 5 * 20, 5 * 20);
     }
 
     @Override

src/main/java/net/knarcraft/dynmapcitizens/trait/SentinelHandler.java

@@ -1,18 +1,53 @@
 package net.knarcraft.dynmapcitizens.trait;
 
+import net.citizensnpcs.api.CitizensAPI;
+import net.citizensnpcs.api.npc.NPC;
+import net.citizensnpcs.api.trait.Trait;
+import net.knarcraft.dynmapcitizens.DynmapCitizens;
+import net.knarcraft.dynmapcitizens.Icon;
+import org.bukkit.Bukkit;
+import org.dynmap.DynmapAPI;
+import org.dynmap.markers.GenericMarker;
+import org.dynmap.markers.MarkerSet;
+import org.mcmonkey.sentinel.SentinelPlugin;
+import org.mcmonkey.sentinel.SentinelTrait;
+
 /**
  * A handler class for the sentinel trait
  */
 public class SentinelHandler extends AbstractTraitHandler {
 
+    private MarkerSet sentinelSet;
+
     @Override
     public void initialize() {
-
+        SentinelPlugin sentinelPlugin = (SentinelPlugin) Bukkit.getServer().getPluginManager().getPlugin("Sentinel");
+        DynmapAPI dynmapAPI = DynmapCitizens.getInstance().getDynmapAPI();
+        if (sentinelPlugin != null) {
+            sentinelSet = getMarkerSet(dynmapAPI, "sentinels", "Sentinels");
+            if (sentinelSet != null) {
+                sentinelSet.setHideByDefault(false);
+                isEnabled = true;
+                return;
+            }
+        }
+        isEnabled = false;
     }
 
     @Override
     public void updateMarkers() {
+        sentinelSet.getMarkers().forEach(GenericMarker::deleteMarker);
 
+        Class<? extends Trait> sentinelTrait = CitizensAPI.getTraitFactory().getTraitClass("sentinel");
+        for (NPC npc : CitizensAPI.getNPCRegistry()) {
+            if (npc.hasTrait(sentinelTrait)) {
+                SentinelTrait trait = CitizensAPI.getTraitFactory().getTrait("sentinel");
+                String description = "<b>Name:</b> " + npc.getName() + "<br><b>Armor:</b> " +
+                        trait.armor + "<br><b>Health:</b> " + trait.health;
+                addNPCMarker(npc.getUniqueId(), "Sentinel NPC: ", description,
+                        DynmapCitizens.getInstance().getMarkerIcons().get(Icon.SENTINEL), sentinelSet);
+            }
+        }
     }
 
 }