Quest TUT 1

/** /*:
 * @author William Ramsey
 * @plugindesc A quest plugin!
 *
 * @target MZ
 *
 * @help
 * This is the help section. There is a limited amount of characters you can use
 * before you need to create a new line.
 *
 */

/**
 * @class Quest
 * Creates a quest!
 *
 * @param {String} name Name of the quest
 * @param {String} description Description of the quest
 * @param {Object} condition Condition object
 *
 * @param {Object[]} rewards Rewards for completing
 *
 */
class Quest {
    constructor(name = 'QUEST', description = '...', condition = { flag: 1, var: 0, max: 0 }, rewards = []) {
        this.name = name;
        this.description = description;
        this.condition = {
            flag: condition.flag,
            var: condition.var,
            max: condition.max
        }
        this.rewards = rewards;

        this.complete = false;
    }

    /**
     * @method complete
     * Marks the quest as complete
     */
    complete() {
        this.complete = true;
        for (let i of this.rewards) {
            switch (i.type) {
                case 'item':
                    $gameParty.gainItem(i.index, i.amount);
                    break;
                case 'exp':
                    for (let j in $gameActors) {
                        $gameActors[j].gainExp(i.amount);
                    }
                    break;
                case 'gold':
                    $gameParty.gainGold(i.amount);
                    break;
            }
        }
    }

    /**
     * @method addReward
     * Adds a reward.
     *
     * @param {Object} o {type: 'item', index: 1, amount: 1}
     */
    addReward(o) {
        this.rewards.push(o);
    }
}

class Window_QuestData extends Window_Base {
    constructor(rect) {
        super(rect);
        this.scrollY = 0;
        this.questId = null;
        this.rewards = '';
    }

    /**
     * @method setRewards
     * Sets the rewards text.
     * @param {Number} questId
     */
    setRewards(questId) {
        this.rewards = this.getRewards(questId);
    }

    /**
     * @method refresh
     * Draws the text data.
     * @param {Number} questId
     */
    refresh() {
        const questId = this.questId;

        this.contents.clear();
        this.drawTextEx(`${questId.name}\n\n${questId.description}\n\nRewards:\n${this.rewards}`, 0, this.scrollY);
        this.bitmap.fillRect(0, this.lineHeight() - this.scrollY, this.contents.width, 2, '#00000090');
    }

    /**
     * Updates every frame
     */
    update() {
        let scrolling = Number(Input.isPressed('pageup')) - Number(Input.isPressed('pagedown'))
        if (scrolling != 0) {
            this.scrollY -= scrolling;

            let lines = 5 + (this.rewards.split('\n').length) * this.lineHeight();
            this.scrollY = Math.min(Math.max(this.scrollY, 0), lines - this.contents.height);

            this.refresh();
        }
    }

    /**
     * @method getRewards
     * Gets rewards and returns them as a string.
     * @param {Object} questId
     */
    getRewards(questId) {
        let exp = 0;
        let gold = 0;
        let items = ``;

        for (let i of questId.rewards) {
            switch (i.type) {
                case 'item':
                    items += ` • ${$dataItems[i.index].name} x${i.amount}\n`
                    break;
                case 'exp':
                    exp += i.amount;
                    break;

                case 'gold':
                    gold += i.amount;
                    break;
            }
        }

        return `EXP: ${exp}\nGold: ${gold}\nItems: ${items}`;
    }
}