MalExpControl

//=============================================================================
// Maliki's Experience Control MZ
// MalExpControl.js
// version 1.0a
//=============================================================================
/*:
* @plugindesc ver1.0a - Allows Devs to set specific experience point totals needed for Actors to level up.
 * @author Maliki79
 *
 * @help To use this plugin, you must first set a set of experience point totals.
 * You must use the notetag <expset: x,y,z>
 * The first number is not used.
 * The second is used to set starting exp points.
 * Each following number will set the TOTAL amount of points needed to reach that level.
 * For example, tag <expset: 0,100,205,210> will set the starting exp point at
 * 100, the next nevel will require 105 points to level up and the next level
 * afterwards will need only 5 points.
 * (If you set a point value that is smaller than the previous number, the game
 * will skip that level and the player will level up multiple times.)
 *
 * 1: (Optional) You do not need to set numbers to level 99.  If you do not,
 *    the functional max level for that class will be whatever number you set.
 *    So for the example above, the player using that class will only be able
 *    to reach level 3 max. (This plugin does not allow levels to go beyond 99
 *    due to the database setup of params.)
 * 2: (Optional) You can add point values to classes to increase the max level.
 *    Using the script call
 *    DataManager.expandExpSet(class, points needed to lvl up);
 *    For example, the call DataManager.expandExpSet($gameParty.members()[0].currentClass(), 200);
 *    Will add 200 to the noted actor's class.  If added to the class tagged above,
 *    it would add a 410 to the end.
 * 3: (Optional) You can also redo the entire point set.  Using script call
 *    DataManager.resetCustomExp(class, [array of values]);
 *    This will NOT reset the amount of point the actor has.
 *
 * Note that if you do not use a exp set for a class, it will utilize the default
 * numbers.
*/

var MalExpContDatabaseLoad = DataManager.isDatabaseLoaded;
DataManager.isDatabaseLoaded = function() {
  if (!MalExpContDatabaseLoad.call(this)) return false;
  if (!DataManager._malExCont_DatabaseLoaded) {
    this.processExpCNotetags($dataClasses);
    DataManager._malExCont_DatabaseLoaded = true;
  }
  return true;
};

DataManager.processExpCNotetags = function(group) {
    for (var n = 1; n < group.length; n++) {
        var obj = group[n];
        this.createCustomExp(obj);
    }
};

DataManager.createCustomExp = function(obj) {

var expset = [];
obj.expSet = [];
var noteread = obj.note;
while(noteread.indexOf("expset") > -1)
{
    var notereg = noteread.split("<expset: ");
    var match = notereg[1].split(">");
    var match2 = match[0];
    expset = match2.split(",");
    noteread = noteread.replace("<expset: ", " ");
    for (var x = 0; x < expset.length; x++) obj.expSet.push(Number(expset[x]));
}
};

var MalExpControlSetupNewGame = DataManager.setupNewGame;
DataManager.setupNewGame = function() {
    MalExpControlSetupNewGame.call(this);
    this.processExpCNotetags($dataClasses);
    $gameSystem.setExpData();
};

DataManager.expandExpSet = function(chosenClass, value) {
    var c = chosenClass;
    c.expSet.push(c.expSet[c.expSet.length-1] + Number(value));
    $gameSystem.setExpData();
};

DataManager.resetCustomExp = function(dClass, values) {
    var expset = values;
    dClass.expSet = [];
    for (var x = 0; x < expset.length; x++) dClass.expSet.push(Number(expset[x]));
    $gameSystem.setExpData();
};

var malExpControlExtractsvCont = DataManager.extractSaveContents;
DataManager.extractSaveContents = function(contents) {
    malExpControlExtractsvCont.call(this, contents);
    this.loadExpSets();
};

DataManager.loadExpSets = function() {
    for(var x = 1; x < $dataClasses.length; x++){
    $dataClasses[x].expSet = $gameSystem.expData[x];
    }
};

Game_System.prototype.setExpData = function() {
this.expData = [];
for(var x = 1; x < $dataClasses.length; x++){
    this.expData[x] = $dataClasses[x].expSet;
}
};

Game_Actor.prototype.expForLevel = function(level) {
    const c = this.currentClass();
    if (c.expSet.length != 0) {
    var expset = c.expSet;
    return expset[level];
    }
    const basis = c.expParams[0];
    const extra = c.expParams[1];
    const acc_a = c.expParams[2];
    const acc_b = c.expParams[3];
    return Math.round(
        (basis * Math.pow(level - 1, 0.9 + acc_a / 250) * level * (level + 1)) /
            (6 + Math.pow(level, 2) / 50 / acc_b) +
            (level - 1) * extra
    );
};

Window_Status.prototype.expNextValue = function() {
    if (this._actor.isMaxLevel() || isNaN(this._actor.nextRequiredExp())) {
        return "-------";
    } else {
        return this._actor.nextRequiredExp();
    }
};