Recodes how the new hologram logic works

I partially reverted d601049117 and chose minimal logic changes. Got reports of holograms not enabling or not being removed so this should be easier and less to test


SD-8943

src/main/java/com/songoda/epicfurnaces/EpicFurnaces.java

@@ -226,7 +226,6 @@ public class EpicFurnaces extends SongodaPlugin {
                 }
 
                 this.dataManager.getFurnaces((furnaces) -> {
-                    furnaces.values().forEach(Furnace::createHologram);
                     this.furnaceManager.addFurnaces(furnaces.values());
                     this.dataManager.getBoosts((boosts) -> this.boostManager.addBoosts(boosts));
                 });
@@ -267,35 +266,23 @@ public class EpicFurnaces extends SongodaPlugin {
     }
 
     public void clearHologram(Furnace furnace) {
-        furnace.removeHologram();
+        HologramManager.removeHologram(furnace.getHologramId());
     }
 
     public void updateHolograms(Collection<Furnace> furnaces) {
         // are holograms enabled?
         if (!Settings.HOLOGRAMS.getBoolean() || !HologramManager.getManager().isEnabled()) return;
 
-        Map<String, List<String>> holograms = new HashMap<>(furnaces.size());
+        Map<String, List<String>> holograms = new HashMap<>();
 
         for (Furnace furnace : furnaces) {
             // don't try to load furnaces in chunks that aren't loaded
             if (!furnace.isInLoadedChunk()) continue;
 
-            if (!HologramManager.isHologramLoaded(furnace.getHologramId())) {
-                continue;
-            }
-
-            holograms.put(furnace.getHologramId(), getHologramLines(furnace));
-        }
-
-        // Update holograms
-        HologramManager.bulkUpdateHolograms(holograms);
-    }
-
-    public List<String> getHologramLines(Furnace furnace) {
             BlockState state = furnace.getLocation().getBlock().getState();
 
             // verify that this is a furnace
-        if (!(state instanceof org.bukkit.block.Furnace)) return Collections.emptyList();
+            if (!(state instanceof org.bukkit.block.Furnace)) continue;
 
             org.bukkit.block.Furnace furnaceBlock = ((org.bukkit.block.Furnace) state);
 
@@ -334,7 +321,17 @@ public class EpicFurnaces extends SongodaPlugin {
                     .processPlaceholder("in", inAmt)
                     .processPlaceholder("out", Math.min(outAmt, 64)).getMessage();
 
-        return Arrays.asList(progress, stats);
+            List<String> hologramLines = Arrays.asList(progress, stats);
+            if (!HologramManager.isHologramLoaded(furnace.getHologramId())) {
+                HologramManager.createHologram(furnace.getHologramId(), furnace.getLocation().add(0, .15, 0), hologramLines);
+                continue;
+            }
+
+            holograms.put(furnace.getHologramId(), hologramLines);
+        }
+
+        // Update holograms
+        HologramManager.bulkUpdateHolograms(holograms);
     }
 
     private void loadLevelManager() {

src/main/java/com/songoda/epicfurnaces/furnace/Furnace.java

@@ -4,9 +4,8 @@ import com.songoda.core.compatibility.CompatibleMaterial;
 import com.songoda.core.compatibility.ServerVersion;
 import com.songoda.core.gui.GuiManager;
 import com.songoda.core.hooks.EconomyManager;
-import com.songoda.core.hooks.HologramManager;
-import com.songoda.core.math.MathUtils;
 import com.songoda.core.hooks.ProtectionManager;
+import com.songoda.core.math.MathUtils;
 import com.songoda.epicfurnaces.EpicFurnaces;
 import com.songoda.epicfurnaces.boost.BoostData;
 import com.songoda.epicfurnaces.furnace.levels.Level;
@@ -40,13 +39,9 @@ import java.util.UUID;
  * Created by songoda on 3/7/2017.
  */
 public class Furnace {
-
     private final EpicFurnaces plugin = EpicFurnaces.getInstance();
 
-    // This is the unique identifier for this furnace.
+    private final String hologramId = UUID.randomUUID().toString();
-    // It is reset on every plugin load.
-    // Used for holograms.
-    private final UUID uniqueId = UUID.randomUUID();
 
     // Identifier for database use.
     private int id;
@@ -410,14 +405,6 @@ public class Furnace {
     }
 
     public String getHologramId() {
-        return "EpicFurnaces-" + uniqueId;
+        return this.hologramId;
-    }
-
-    public void createHologram() {
-        HologramManager.createHologram(getHologramId(), getLocation().add(0, 0.15, 0), plugin.getHologramLines(this));
-    }
-
-    public void removeHologram() {
-        HologramManager.removeHologram(getHologramId());
     }
 }

src/main/java/com/songoda/epicfurnaces/listeners/BlockListeners.java

@@ -1,5 +1,6 @@
 package com.songoda.epicfurnaces.listeners;
 
+import com.songoda.core.hooks.HologramManager;
 import com.songoda.core.utils.PlayerUtils;
 import com.songoda.epicfurnaces.EpicFurnaces;
 import com.songoda.epicfurnaces.furnace.Furnace;
@@ -18,6 +19,7 @@ import org.bukkit.event.block.BlockFormEvent;
 import org.bukkit.event.block.BlockPlaceEvent;
 import org.bukkit.inventory.ItemStack;
 
+import java.util.Collections;
 import java.util.List;
 
 /**
@@ -92,7 +94,7 @@ public class BlockListeners implements Listener {
         plugin.getDataManager().createFurnace(furnace);
         plugin.getFurnaceManager().addFurnace(furnace);
 
-        furnace.createHologram();
+        plugin.updateHolograms(Collections.singleton(furnace));
     }
 
     @EventHandler(priority = EventPriority.HIGHEST, ignoreCancelled = true)