Fixed stats

src/main/java/net/Indyuce/mmocore/MMOCore.java

@@ -300,12 +300,12 @@ public class MMOCore extends JavaPlugin {
 
 		/*
 		 * Initialize player data from all online players. This is very important to do
-		 * that after registering all the professses otherwise the player datas can't
+		 * that after registering all the classes otherwise the player datas can't
 		 * recognize what profess the player has and professes will be lost
 		 */
 		Bukkit.getOnlinePlayers().forEach(player -> dataProvider.getDataManager().setup(player.getUniqueId()));
 
-		// load guild data after loading player data
+		// Load guild data after loading player data
 		dataProvider.getGuildManager().load();
 
 		// Command

src/main/java/net/Indyuce/mmocore/api/player/profess/PlayerClass.java

@@ -380,6 +380,10 @@ public class PlayerClass extends PostLoadObject implements ExperienceObject {
         return skills.values();
     }
 
+    public Set<String> getStats() {
+        return stats.keySet();
+    }
+
     @NotNull
     private LinearValue getStatInfo(String stat) {
         LinearValue found = stats.get(stat);

src/main/java/net/Indyuce/mmocore/api/player/stats/PlayerStats.java

@@ -6,10 +6,11 @@ import io.lumine.mythic.lib.api.stat.StatMap;
 import io.lumine.mythic.lib.api.stat.modifier.StatModifier;
 import io.lumine.mythic.lib.player.modifier.ModifierSource;
 import io.lumine.mythic.lib.player.modifier.ModifierType;
-import net.Indyuce.mmocore.skill.ClassSkill;
+import net.Indyuce.mmocore.MMOCore;
 import net.Indyuce.mmocore.api.player.PlayerData;
 import net.Indyuce.mmocore.experience.Profession;
 import net.Indyuce.mmocore.player.stats.StatInfo;
+import net.Indyuce.mmocore.skill.ClassSkill;
 
 public class PlayerStats {
     private final PlayerData data;
@@ -70,14 +71,15 @@ public class PlayerStats {
      * see {@link PlayerData#update()} for more info
      */
     public synchronized void updateStats() {
-        for (StatInstance instance : getMap().getInstances()) {
-            StatInstance.ModifierPacket packet = instance.newPacket();
+        for (String stat : MMOCore.plugin.statManager.getRegistered()) {
+            final StatInstance instance = getMap().getInstance(stat);
+            final StatInstance.ModifierPacket packet = instance.newPacket();
 
-            // Remove old stat modifiers
-            packet.removeIf(str -> str.equals("mmocoreClass"));
+            // Remove old stat modifier
+            packet.remove("mmocoreClass");
 
             // Add newest one
-            double total = getBase(instance.getStat()) - instance.getBase();
+            final double total = getBase(instance.getStat()) - instance.getBase();
             if (total != 0)
                 packet.addModifier(new StatModifier("mmocoreClass", instance.getStat(), total, ModifierType.FLAT, EquipmentSlot.OTHER, ModifierSource.OTHER));
 

src/main/java/net/Indyuce/mmocore/manager/ClassManager.java

@@ -1,8 +1,8 @@
 package net.Indyuce.mmocore.manager;
 
 import net.Indyuce.mmocore.MMOCore;
-import net.Indyuce.mmocore.api.player.profess.PlayerClass;
 import net.Indyuce.mmocore.api.player.profess.ClassOption;
+import net.Indyuce.mmocore.api.player.profess.PlayerClass;
 import net.Indyuce.mmocore.api.player.profess.event.EventTriggerHandler;
 import net.Indyuce.mmocore.api.player.profess.event.trigger.*;
 import org.apache.commons.lang.Validate;
@@ -46,6 +46,7 @@ public class ClassManager implements MMOCoreManager {
 
     public void register(PlayerClass playerClass) {
         map.put(playerClass.getId(), playerClass);
+        MMOCore.plugin.statManager.getRegistered().addAll(playerClass.getStats());
     }
 
     public boolean has(String id) {
@@ -75,8 +76,8 @@ public class ClassManager implements MMOCoreManager {
             map.clear();
 
             /*
-             * Do not clear the list of trigger listeners, since it's only setup
-             * once the server loads and it is never modified.
+             * Does not clear the list of trigger listeners, since it's
+             * only setup once the server loads and it is never modified.
              */
             triggerHandlers.forEach(HandlerList::unregisterAll);
         }

src/main/java/net/Indyuce/mmocore/manager/StatManager.java

@@ -1,28 +1,38 @@
 package net.Indyuce.mmocore.manager;
 
 import net.Indyuce.mmocore.api.ConfigFile;
-import net.Indyuce.mmocore.player.stats.StatInfo;
 import net.Indyuce.mmocore.api.util.math.formula.LinearValue;
 import net.Indyuce.mmocore.experience.Profession;
+import net.Indyuce.mmocore.player.stats.StatInfo;
 import org.bukkit.configuration.file.FileConfiguration;
 import org.jetbrains.annotations.NotNull;
 import org.jetbrains.annotations.Nullable;
 
-import java.util.Collection;
-import java.util.HashMap;
-import java.util.Map;
+import java.util.*;
 
 public class StatManager implements MMOCoreManager {
     private final Map<String, StatInfo> loaded = new HashMap<>();
 
+    /**
+     * Keeps track of all the item stats used so far in the plugin.
+     * It is not a constant since users can freely add or even create
+     * new stats.
+     * <p>
+     * These stats appear at least once:
+     * - in a class definition
+     * - in stats.yml which defines default stat formulas
+     */
+    private final Set<String> usedStats = new HashSet<>();
+
     @Override
     public void initialize(boolean clearBefore) {
-        if (clearBefore)
+        if (clearBefore) {
             loaded.clear();
-
-        FileConfiguration config = new ConfigFile("stats").getConfig();
+            usedStats.clear();
+        }
 
         // Read default formulas
+        FileConfiguration config = new ConfigFile("stats").getConfig();
         for (String key : config.getConfigurationSection("default").getKeys(false))
             registerDefaultFormula(key, new LinearValue(config.getConfigurationSection("default." + key)));
     }
@@ -31,6 +41,21 @@ public class StatManager implements MMOCoreManager {
         return loaded.values();
     }
 
+    /**
+     * Keeps track of all the item stats used so far in the plugin.
+     * It is not a constant since users can freely add or even create
+     * new stats.
+     * <p>
+     * These stats appear at least once:
+     * - in a class definition
+     * - in stats.yml which defines default stat formulas
+     *
+     * @return A list of stats that must be taken into account in MMOCore
+     */
+    public Set<String> getRegistered() {
+        return usedStats;
+    }
+
     @Nullable
     public StatInfo getInfo(String stat) {
         return loaded.get(stat);
@@ -42,20 +67,15 @@ public class StatManager implements MMOCoreManager {
 
     public void registerDefaultFormula(String stat, LinearValue defaultFormula) {
         compute(stat).defaultInfo = defaultFormula;
+        usedStats.add(stat);
     }
 
     /**
-     * @return A stat info for the specified stat. If it doesn't
-     *         exist when method is called, it is registered into the map
+     * @return A stat info for the specified stat. If it doesn't exist
+     *         when method is called, it is registered into the map
      */
     @NotNull
     private StatInfo compute(String stat) {
-        StatInfo found = loaded.get(stat);
-        if (found != null)
-            return found;
-
-        StatInfo newInfo = new StatInfo(stat);
-        loaded.put(stat, newInfo);
-        return newInfo;
+        return loaded.computeIfAbsent(stat, StatInfo::new);
     }
 }

src/main/resources/default/gui/player-stats.yml

@@ -221,7 +221,7 @@ items:
         - ''
         - '✤ Knockback Resistance: &f{knockback_resistance} &7(&f{knockback_resistance_base} &7+ &f{knockback_resistance_extra}&7)'
         - '✤ Movement Speed: &f{movement_speed} &7(&f{movement_speed_base} &7+ &f{movement_speed_extra}&7)'
-        - '✤ Speed Malus Reduction: &f{speed_malus_reduction} &7(&f{speed_malus_reduction_base} &7+ &f{speed_malus_reduction_extra}&7)'
+        - '✤ Speed Malus Reduction: &f{speed_malus_reduction}% &7(&f{speed_malus_reduction_base} &7+ &f{speed_malus_reduction_extra}&7)'
     int:
         slots: [34]
         function: stats

src/main/resources/default/stats.yml

@@ -1,3 +1,4 @@
+# Caution, these are very case sensitive!
 default:
     ATTACK_DAMAGE:
         base: 1
@@ -26,7 +27,7 @@ default:
     HEALTH_REGENERATION:
         base: .1
         per-level: 0
-        
+
     # Max Resource
     MAX_MANA:
         base: 20
@@ -37,7 +38,7 @@ default:
     MAX_STELLIUM:
         base: 20
         per-level: 0
-    
+
     # Resource Regeneration
     MANA_REGENERATION:
         base: .166
@@ -48,12 +49,12 @@ default:
     STELLIUM_REGENERATION:
         base: .01
         per-level: 0
-    
+
     # Increases main class experience earned.
     ADDITIONAL_EXPERIENCE:
         base: 0
         per-level: 0
-    
+
     # Reduces skill cooldowns by X%
     COOLDOWN_REDUCTION:
         base: 0
@@ -63,32 +64,32 @@ default:
     CHANCE:
         base: 0
         per-level: 0
-    
+
     # Dealt by skills
     SKILL_DAMAGE:
         base: 0
         per-level: 0
-    
+
     # Physical skill damage
     PHYSICAL_DAMAGE:
         base: 0
         per-level: 0
-    
+
     # Magic skill damage
     MAGIC_DAMAGE:
         base: 0
         per-level: 0
-    
+
     # Dealt by any weapon
     WEAPON_DAMAGE:
         base: 0
         per-level: 0
-    
+
     # Dealt by projectile skills or weapons
     PROJECTILE_DAMAGE:
         base: 0
         per-level: 0
-    
+
     # Reduces the amount of tugs needed to fish fishes.
     # (When set to 30, 30% of the tugs will be removed).
     FISHING_STRENGTH:
@@ -96,14 +97,14 @@ default:
         per-level: 0.3
         min: 0
         max: 40
-    
+
     # Chance of instantly fishing.
     CRITICAL_FISHING_CHANCE:
         base: 5
         per-level: 0
         min: 0
         max: 70
-            
+
     # Chance of being dragged in the waters
     # by the fish when trying to catch it,
     # once the player has NOT successfully