[Ci skip] Some more refactoring

src/main/java/io/github/thebusybiscuit/slimefun4/api/SlimefunAddon.java

@@ -1,5 +1,7 @@
 package io.github.thebusybiscuit.slimefun4.api;
 
+import java.util.logging.Logger;
+
 import org.bukkit.plugin.Plugin;
 import org.bukkit.plugin.java.JavaPlugin;
 
@@ -34,5 +36,35 @@ public interface SlimefunAddon {
 	 * @return	The URL for this Plugin's Bug Tracker, or null
 	 */
 	String getBugTrackerURL();
+	
+	/**
+	 * This method returns the name of this addon, it defaults to the name
+	 * of the {@link JavaPlugin} provided by {@link SlimefunAddon#getJavaPlugin()}
+	 * 
+	 * @return	The Name of this {@link SlimefunAddon}
+	 */
+	default String getName() {
+		return getJavaPlugin().getName();
+	}
+	
+	/**
+	 * This method returns the version of this addon, it defaults to the version
+	 * of the {@link JavaPlugin} provided by {@link SlimefunAddon#getJavaPlugin()}
+	 * 
+	 * @return	The version of this {@link SlimefunAddon}
+	 */
+	default String getPluginVersion() {
+		return getJavaPlugin().getDescription().getVersion();
+	}
+
+	/**
+	 * This method returns the {@link Logger} of this addon, it defaults to the {@link Logger}
+	 * of the {@link JavaPlugin} provided by {@link SlimefunAddon#getJavaPlugin()}
+	 * 
+	 * @return	The {@link Logger} of this {@link SlimefunAddon}
+	 */
+	default Logger getLogger() {
+		return getJavaPlugin().getLogger();
+	}
 
 }

src/main/java/io/github/thebusybiscuit/slimefun4/api/gps/GPSNetwork.java

@@ -1,6 +1,5 @@
 package io.github.thebusybiscuit.slimefun4.api.gps;
 
-import java.util.Collections;
 import java.util.HashMap;
 import java.util.HashSet;
 import java.util.Map;
@@ -46,16 +45,13 @@ public class GPSNetwork {
 	private final ItemStack worldIcon = SkullItem.fromBase64("eyJ0ZXh0dXJlcyI6eyJTS0lOIjp7InVybCI6Imh0dHA6Ly90ZXh0dXJlcy5taW5lY3JhZnQubmV0L3RleHR1cmUvYzljODg4MWU0MjkxNWE5ZDI5YmI2MWExNmZiMjZkMDU5OTEzMjA0ZDI2NWRmNWI0MzliM2Q3OTJhY2Q1NiJ9fX0=");
 	
 	public void updateTransmitter(Location l, UUID uuid, boolean online) {
-		Set<Location> set = transmitters.getOrDefault(uuid, new HashSet<>());
+		Set<Location> set = transmitters.computeIfAbsent(uuid, id -> new HashSet<>());
 
 		if (online) {
-			if (set.add(l)) {
-				transmitters.put(uuid, set);
-			}
+			set.add(l);
 		}
 		else {
 			set.remove(l);
-			transmitters.put(uuid, set);
 		}
 	}
 	

src/main/java/io/github/thebusybiscuit/slimefun4/core/commands/subcommands/ResearchCommand.java

@@ -46,10 +46,10 @@ public class ResearchCommand extends SubCommand {
 							researchAll(sender, profile, p);
 						}
 						else if (args[2].equalsIgnoreCase("reset")) {
-							reset(sender, profile, p);
+							reset(profile, p);
 						}
 						else {
-							giveResearch(sender, profile, p, args[2]);
+							giveResearch(sender, p, args[2]);
 						}
 					});
 				}
@@ -64,7 +64,7 @@ public class ResearchCommand extends SubCommand {
 		}
 	}
 
-	private void giveResearch(CommandSender sender, PlayerProfile profile, Player p, String input) {
+	private void giveResearch(CommandSender sender, Player p, String input) {
 		Optional<Research> research = getResearchFromString(input);
 		
 		if (research.isPresent()) {
@@ -86,7 +86,7 @@ public class ResearchCommand extends SubCommand {
 		}
 	}
 
-	private void reset(CommandSender sender, PlayerProfile profile, Player p) {
+	private void reset(PlayerProfile profile, Player p) {
 		for (Research res : SlimefunPlugin.getRegistry().getResearches()) {
 			profile.setResearched(res, false);
 		}

src/main/java/me/mrCookieSlime/Slimefun/Objects/SlimefunItem/ReplacingAlloy.java

@@ -6,6 +6,11 @@ import me.mrCookieSlime.Slimefun.Objects.Category;
 
 import org.bukkit.inventory.ItemStack;
 
+/**
+ * 
+ * @deprecated The method name is very misleading, therefore it should be renamed
+ *
+ */
 @Deprecated
 public class ReplacingAlloy extends ReplacingItem {
 

src/main/java/me/mrCookieSlime/Slimefun/Objects/SlimefunItem/ReplacingItem.java

@@ -5,6 +5,11 @@ import me.mrCookieSlime.Slimefun.Objects.Category;
 
 import org.bukkit.inventory.ItemStack;
 
+/**
+ * 
+ * @deprecated The method name is very misleading, therefore it should be renamed
+ *
+ */
 @Deprecated
 public class ReplacingItem extends SlimefunItem {
 

src/main/java/me/mrCookieSlime/Slimefun/Objects/SlimefunItem/SlimefunItem.java

@@ -21,6 +21,7 @@ import io.github.thebusybiscuit.cscorelib2.collections.OptionalMap;
 import io.github.thebusybiscuit.cscorelib2.inventory.ItemUtils;
 import io.github.thebusybiscuit.slimefun4.api.SlimefunAddon;
 import io.github.thebusybiscuit.slimefun4.api.items.Placeable;
+import me.mrCookieSlime.Slimefun.SlimefunGuide;
 import me.mrCookieSlime.Slimefun.SlimefunPlugin;
 import me.mrCookieSlime.Slimefun.Lists.RecipeType;
 import me.mrCookieSlime.Slimefun.Lists.SlimefunItems;
@@ -41,9 +42,9 @@ import me.mrCookieSlime.Slimefun.api.energy.EnergyTicker;
 public class SlimefunItem implements Placeable {
 
 	private ItemState state;
-	private SlimefunAddon addon;
 	
 	protected String id;
+	protected SlimefunAddon addon;
 	protected ItemStack item;
 	protected Category category;
 	protected ItemStack[] recipe;
@@ -166,14 +167,37 @@ public class SlimefunItem implements Placeable {
 		return disenchantable;
 	}
 
+	/**
+	 * This method returns whether this {@link SlimefunItem} was hidden from the
+	 * {@link SlimefunGuide}.
+	 * 
+	 * @return	Whether this {@link SlimefunItem} is hidden.
+	 */
 	public boolean isHidden() {
 		return hidden;
 	}
 	
+	/**
+	 * This method returns whether this {@link SlimefunItem} was added by an addon.
+	 * 
+	 * @return	Whether this {@link SlimefunItem} was added by an addon.
+	 */
 	public boolean isAddonItem() {
 		return !(addon instanceof SlimefunPlugin);
 	}
 	
+	/**
+	 * This method returns the {@link SlimefunAddon} that registered this
+	 * {@link SlimefunItem}. If this Item is from Slimefun itself, the current
+	 * instance of {@link SlimefunPlugin} will be returned.
+	 * Use an instanceof check or {@link SlimefunItem#isAddonItem()} to account for that.
+	 * 
+	 * @return	The {@link SlimefunAddon} that registered this {@link SlimefunItem}
+	 */
+	public SlimefunAddon getAddon() {
+		return addon;
+	}
+	
 	public String getPermission() {
 		return permission;
 	}
@@ -190,6 +214,11 @@ public class SlimefunItem implements Placeable {
 		return energyTicker;
 	}
 	
+	/**
+	 * This method returns whether this {@link SlimefunItem} is disabled.
+	 * 
+	 * @return	Whether this {@link SlimefunItem} is disabled.
+	 */
 	public boolean isDisabled() {
 		return state != ItemState.ENABLED;
 	}
@@ -202,7 +231,6 @@ public class SlimefunItem implements Placeable {
 	 */
 	@Deprecated
 	public void register() {
-//		Slimefun.getLogger().log(Level.WARNING, "Another Plugin tried to register an Item (\"{0}\") without assigning it a SlimefunAddon. Please contact the author and notify them to update their Plugin. This is just a warning, performance or your overall experience will NOT be affected. (DO NOT REPORT THIS TO SLIMEFUN)", ChatColor.stripColor(getItemName()));
 		register((SlimefunAddon) null);
 	}
 	
@@ -635,7 +663,7 @@ public class SlimefunItem implements Placeable {
 	
 	@Override
 	public String toString() {
-		return "SlimefunItem: " + id + " (" + state + ", addon=" + (addon == null ? "Unknown": addon.getJavaPlugin().getName()) + ")";
+		return "SlimefunItem: " + id + " (" + state + ", addon=" + (addon == null ? "Unknown": addon.getName()) + ")";
 	}
 
 	@Override

src/main/java/me/mrCookieSlime/Slimefun/Objects/SlimefunItem/Talisman.java

@@ -94,7 +94,7 @@ public class Talisman extends SlimefunItem {
     @Override
     public void postRegister() {
         EnderTalisman talisman = new EnderTalisman(this);
-        talisman.register(!isAddonItem());
+        talisman.register(addon);
     }
 
     @Override
@@ -107,7 +107,7 @@ public class Talisman extends SlimefunItem {
         }
     }
 
-    private static boolean isTalismanMessage(Talisman talisman){
+    private static boolean hasMessage(Talisman talisman){
         return !("").equalsIgnoreCase(talisman.getSuffix());
     }
     
@@ -168,7 +168,7 @@ public class Talisman extends SlimefunItem {
     }
 
     private static void sendMessage(Player p, Talisman talisman){
-        if (isTalismanMessage(talisman)) {
+        if (hasMessage(talisman)) {
         	SlimefunPlugin.getLocal().sendMessage(p, "messages.talisman." + talisman.getSuffix(), true);
         }
     }