WeaponClassChange

//=============================================================================
// WeaponClassChange.js
//=============================================================================

/*:
 * @plugindesc Changes class when actor equips a different weapon type.
 * @author Jeremy Cannady
 *
 * @param Weapon Types
 * @desc List the weapon types.
 * @default 1,2,3,4,5,6,7,8,9,10
 *
 * @param Classes
 * @desc List the classes.
 * @default 1,2,3,4,5,6,7,8,9,10
 *
 * @param Unequipped Class
 * @desc The is the class you want to be when you dont have a weapon equipped.
 * @default 1

 * Example one:
 * Weapon Type :1,2,3,4,5,6,7,8,9,10
 *              | | | | | | | | | |
 * Class:       1,2,3,4,5,6,7,8,9,10
 * When you equip weapon type one your class changes to class #1 in your database.
 *  When you equip weapon type 5 your class changes to class #5 in your database.
 *
 * Example two:
 * Weapon Type: 1,2,3,4,5,6,7,8,9,10
 *              | | | | | | | | | |
 * Class:       1,2,8,4,5,6,7,8,9,10
 *  When you equip weapon type three or eight your class changes to class #8 in your database.
 *
 * @help The parameter order determines the class change.
    Classes 1,2,3,4,5,6,7,8,9,10
 *For example when you equip weapon type 1 then your class changes to class 1.
    Classes 2,2,3,4,5,6,7,8,9,10
 *In this example when you equip weapon type 1 then your class changes to class 2.
 *Please see script text for a simple graphic.
 *
 *
 *
*/

var COLD = COLD || {};
COLD.WeaponClassChange = {
    Game_Actor_Setup : Game_Actor.prototype.setup,
    Game_Actor_changeEquip : Game_Actor.prototype.changeEquip,
    Parameters : PluginManager.parameters('WeaponClassChange'),
};

COLD.WeaponClassChange.weaponType = COLD.WeaponClassChange.Parameters['Weapon Types'].split(',');
COLD.WeaponClassChange.classes = COLD.WeaponClassChange.Parameters['Classes'].split(',');;
COLD.WeaponClassChange.defaultClass = Number(COLD.WeaponClassChange.Parameters['Unequipped Class']);

//Convert the parameters into number array
for(var i = 0; i < COLD.WeaponClassChange.weaponType.length; i++) { COLD.WeaponClassChange.weaponType[i] = parseInt(COLD.WeaponClassChange.weaponType[i], 10); }
for(var i = 0; i < COLD.WeaponClassChange.classes.length; i++) { COLD.WeaponClassChange.classes[i] = parseInt(COLD.WeaponClassChange.classes[i], 10); }


(function() {

    Game_Actor.prototype.setup = function(actorId) {
        COLD.WeaponClassChange.Game_Actor_Setup.call(this,actorId);
        this._classExp = [];
        var length = $dataClasses.length
        for(var i = 0; i<length; i++){
            //Sets the default value for each class starting exp to 0
            this._classExp.push(0);
        };
    };

    //This function compares which weapon type you have equipped and gives you the class that corresponds to it.
    Game_Actor.prototype.getNewClassId = function(){
        var wtypeId = this.weapons()[0] ? this.weapons()[0].wtypeId : 0;
        //Takes the position of the weapon parameter and makes newClassId equal to the the parameter that is in the same position as the weapon type.
        var newClassId = COLD.WeaponClassChange.classes[COLD.WeaponClassChange.weaponType.indexOf(wtypeId)];
        //If the actor has unequipped a weapon then make the newClassId into the 'Unequipped Class' in the parameters.
        if($gameActors.actor(this.actor().id).hasNoWeapons()){
            newClassId = COLD.WeaponClassChange.defaultClass;
        };
        //When we call this function then return what our class should be based upon which wepaon we have equipped
        return newClassId;
    };

    //Overide Game_Actor.prototype.changeEquip
    Game_Actor.prototype.changeEquip = function(slotId, item) {
        //When we change our equipment then do what we used to do in the origial Game_Actor.prototype.changeEquip
        COLD.WeaponClassChange.Game_Actor_changeEquip.call(this,slotId,item);

        //but also do this
        COLD.WeaponClassChange.changeToNewClass(this.actor().id);
    };

    COLD.WeaponClassChange.changeToNewClass = function(currentActor){
        //When we call the function changeToNewClass then do these things.
        //Current Actor ID

        var actor = $gameActors.actor(currentActor);

        //Current Class Id
        var currentClassId = actor.currentClass().id;
        var newClassId = actor.getNewClassId();

        //Current Exp
        var currentExp = actor.currentExp();

        //Put the curent exp back in to the array
        actor._classExp[currentClassId] = currentExp;

        //Change the class
        actor.changeClass(newClassId, false);

        //Change the exp to the correct value
        var newExp = actor._classExp[newClassId];
        actor.changeExp(newExp,false)

        //Forget old skills
        actor._skills.forEach(function(forget){
            var index = actor._skills.indexOf(forget);
            if (index >= 0) {
                actor._skills.splice(index, 1);
            };
        }, actor);

        //Learn new skills
        actor.currentClass().learnings.forEach(function(learning) {
              if (learning.level <= actor._level) {
                  actor.learnSkill(learning.skillId);
              }
        }, actor);

    };

})();