'use strict';

class Predicates {
    static hpLessThanHalf(value, index) {
        return value.mhp/2 > value.hp;
    }

    static isMaxHP(value, index) {
        return value.mhp === value.hp;
    }
}

class TrapAction {
    static fire(actionName, predicate) {
        const actionMembers = $gameParty.members().filter(predicate);
        this[actionName](actionMembers);
    }

    //private
    static killMembers(actionMembers) {
        actionMembers.forEach(function(value, index) {
            value.addState(value.deathStateId());
        });
    }

    //private
    static addPoisonState(actionMembers) {
        actionMembers.forEach(function(value, index) {
            value.addState(4);//Poison
        });
    }
}

class RewardAction {
    static tryFire(actionName, predicate) {
        const canFire = $gameParty.members().every(predicate);
        if(canFire) {
            this[actionName]();
        }
    }

    //private
    static upToLevelFifty() {
        $gameParty.members().forEach(function(value, index) {
            value.changeLevel(50, true);
        });
    }
}

/*以下はスクリプトコマンドから実行する*/

/*
//HP全快のメンバーに毒を付与
TrapAction.fire('addPoisonState', Predicates.isMaxHP);
//HP半分未満のメンバーは死亡
TrapAction.fire('killMembers', Predicates.hpLessThanHalf);
//全メンバーがレベル50以下なら、全メンバー50まで上げる
RewardAction.tryFire('upToLevelFifty', function(value, index) {
    return value.level <= 50;
});
*/