Removing the clunky previous formula file design

src/main/java/com/gmail/nossr50/datatypes/experience/FormulaType.java

@@ -2,14 +2,5 @@ package com.gmail.nossr50.datatypes.experience;
 
 public enum FormulaType {
     LINEAR,
-    EXPONENTIAL,
+    EXPONENTIAL
-    UNKNOWN;
-
-    public static FormulaType getFormulaType(String string) {
-        try {
-            return valueOf(string);
-        } catch (IllegalArgumentException ex) {
-            return UNKNOWN;
-        }
-    }
 }

src/main/java/com/gmail/nossr50/datatypes/party/Party.java

@@ -14,6 +14,7 @@ import org.bukkit.Bukkit;
 import org.bukkit.ChatColor;
 import org.bukkit.command.CommandSender;
 import org.bukkit.entity.Player;
+import sun.security.krb5.Config;
 
 import java.text.DecimalFormat;
 import java.util.ArrayList;
@@ -193,12 +194,7 @@ public class Party {
     }
 
     public int getXpToLevel() {
-<<<<<<< HEAD
+        return mcMMO.getFormulaManager().getXPtoNextLevel(level);
-        return mcMMO.getFormulaManager().getPartyCachedXpToLevel(level);
-=======
-        FormulaType formulaType = ExperienceConfig.getInstance().getFormulaType();
-        return (mcMMO.getFormulaManager().getXPtoNextLevel(level, formulaType)) * (getOnlineMembers().size() + Config.getInstance().getPartyXpCurveMultiplier());
->>>>>>> ff1bb0deed61cda7daa75a374da3942de9e2e172
     }
 
     public String getXpToLevelPercentage() {

src/main/java/com/gmail/nossr50/datatypes/player/PlayerProfile.java

@@ -390,7 +390,6 @@ public class PlayerProfile {
      */
     public int getXpToLevel(PrimarySkillType primarySkillType) {
         int level = (mcMMO.getConfigManager().getConfigLeveling().getConfigExperienceFormula().isCumulativeCurveEnabled()) ? UserManager.getPlayer(playerName).getPowerLevel() : skills.get(primarySkillType);
-        FormulaType formulaType = mcMMO.getConfigManager().getConfigLeveling().getFormulaType();
 
         return mcMMO.getFormulaManager().getXPtoNextLevel(level, formulaType);
     }

src/main/java/com/gmail/nossr50/util/experience/FormulaManager.java

@@ -3,6 +3,7 @@ package com.gmail.nossr50.util.experience;
 import com.gmail.nossr50.datatypes.experience.FormulaType;
 import com.gmail.nossr50.datatypes.skills.PrimarySkillType;
 import com.gmail.nossr50.mcMMO;
+import com.sk89q.worldedit.internal.expression.runtime.For;
 import org.bukkit.configuration.file.YamlConfiguration;
 
 import java.io.File;
@@ -12,18 +13,17 @@ import java.util.Map;
 public class FormulaManager {
     private static File formulaFile = new File(mcMMO.getFlatFileDirectory() + "formula.yml");
 
-    // Experience needed to reach a level, cached values to improve conversion speed
+    // Experience needed to reach a level, cached values for speed
     private Map<Integer, Integer> experienceNeededRetroLinear;
     private Map<Integer, Integer> experienceNeededStandardLinear;
     private Map<Integer, Integer> experienceNeededRetroExponential;
     private Map<Integer, Integer> experienceNeededStandardExponential;
 
-    private FormulaType previousFormula;
+    private FormulaType currentFormula;
 
     public FormulaManager() {
-        /* Setting for Classic Mode (Scales a lot of stuff up by * 10) */
+        currentFormula = mcMMO.getConfigManager().getConfigLeveling().getFormulaType();
         initExperienceNeededMaps();
-        loadFormula();
     }
 
     /**
@@ -36,24 +36,6 @@ public class FormulaManager {
         experienceNeededStandardExponential = new HashMap<>();
     }
 
-    /**
-     * Get the formula type that was used before converting
-     *
-     * @return previously used formula type
-     */
-    public FormulaType getPreviousFormulaType() {
-        return previousFormula;
-    }
-
-    /**
-     * Set the formula type that was used before converting
-     *
-     * @param previousFormulaType The {@link FormulaType} previously used
-     */
-    public void setPreviousFormulaType(FormulaType previousFormulaType) {
-        this.previousFormula = previousFormulaType;
-    }
-
     /**
      * Calculate the total amount of experience earned based on
      * the amount of levels and experience, using the previously
@@ -61,13 +43,14 @@ public class FormulaManager {
      *
      * @param skillLevel Amount of levels
      * @param skillXPLevel Amount of experience
+     * @param formulaType Formula to calculate XP for
      * @return The total amount of experience
      */
-    public int calculateTotalExperience(int skillLevel, int skillXPLevel) {
+    public int calculateTotalExperience(int skillLevel, int skillXPLevel, FormulaType formulaType) {
         int totalXP = 0;
 
         for (int level = 0; level < skillLevel; level++) {
-            totalXP += getXPtoNextLevel(level, previousFormula);
+            totalXP += getXPtoNextLevel(level, formulaType);
         }
 
         totalXP += skillXPLevel;
@@ -119,14 +102,28 @@ public class FormulaManager {
          * Standard mode XP requirements are multiplied by a factor of 10
          */
 
-        //TODO: When the heck is Unknown used?
-        if (formulaType == FormulaType.UNKNOWN) {
-            formulaType = FormulaType.LINEAR;
-        }
-
         return processXPToNextLevel(level, formulaType);
     }
 
+    /**
+     * Get the cached amount of experience needed to reach the next level,
+     * if cache doesn't contain the given value it is calculated and added
+     * to the cached data.
+     *
+     * Uses the formula specified in the user configuration file
+     *
+     * @param level level to check
+     * @return amount of experience needed to reach next level
+     */
+    public int getXPtoNextLevel(int level) {
+        /**
+         * Retro mode XP requirements are the default requirements
+         * Standard mode XP requirements are multiplied by a factor of 10
+         */
+
+        return processXPToNextLevel(level, currentFormula);
+    }
+
     /**
      * Gets the value of XP needed for the next level based on the level Scaling, the level, and the formula type
      * @param level target level
@@ -206,32 +203,4 @@ public class FormulaManager {
                 return calculateXPNeeded(level, FormulaType.LINEAR);
         }
     }
-
-    /**
-     * Load formula file.
-     */
-    public void loadFormula() {
-        if (!formulaFile.exists()) {
-            previousFormula = FormulaType.UNKNOWN;
-            return;
-        }
-
-        previousFormula = FormulaType.getFormulaType(YamlConfiguration.loadConfiguration(formulaFile).getString("Previous_Formula", "UNKNOWN"));
-    }
-
-    /**
-     * Save formula file.
-     */
-    public void saveFormula() {
-        mcMMO.p.debug("Saving previous XP formula type...");
-        YamlConfiguration formulasFile = new YamlConfiguration();
-        formulasFile.set("Previous_Formula", previousFormula.toString());
-
-        try {
-            formulasFile.save(formulaFile);
-        }
-        catch (Exception e) {
-            e.printStackTrace();
-        }
-    }
 }