randomRange util function

commands/avatar-edit/card.js

@@ -2,6 +2,7 @@ const { Command } = require('discord.js-commando');
 const { createCanvas, loadImage, registerFont } = require('canvas');
 const snekfetch = require('snekfetch');
 const path = require('path');
+const { randomRange } = require('../../util/Util');
 const { version } = require('../../package');
 registerFont(path.join(__dirname, '..', '..', 'assets', 'fonts', 'Noto.ttf'), { family: 'Noto' });
 registerFont(path.join(__dirname, '..', '..', 'assets', 'fonts', 'Noto-CJK.otf'), { family: 'Noto' });
@@ -38,7 +39,7 @@ module.exports = class CardCommand extends Command {
 			size: 512
 		});
 		try {
-			const cardID = Math.floor(Math.random() * (9999 - 1000 + 1)) + 1000;
+			const cardID = randomRange(1000, 9999);
 			let rarity;
 			if (cardID < 5000) rarity = 'C';
 			else if (cardID < 9000) rarity = 'U';

commands/games/battle.js

@@ -1,6 +1,6 @@
 const { Command } = require('discord.js-commando');
 const { stripIndents } = require('common-tags');
-const { verify } = require('../../util/Util');
+const { randomRange, verify } = require('../../util/Util');
 
 module.exports = class BattleCommand extends Command {
 	constructor(client) {
@@ -88,7 +88,7 @@ module.exports = class BattleCommand extends Command {
 				} else if (choice === 'special') {
 					const hit = Math.floor(Math.random() * 4) + 1;
 					if (hit === 1) {
-						const damage = Math.floor(Math.random() * ((guard ? 150 : 300) - 100 + 1)) + 100;
+						const damage = randomRange(100, guard ? 150 : 300);
 						await msg.say(`${user} deals **${damage}** damage!`);
 						dealDamage(damage);
 					} else {

commands/games/fishy.js

@@ -1,4 +1,5 @@
 const { Command } = require('discord.js-commando');
+const { randomRange } = require('../../util/Util');
 const fishes = require('../../assets/json/fishy');
 
 module.exports = class FishyCommand extends Command {
@@ -13,13 +14,14 @@ module.exports = class FishyCommand extends Command {
 	}
 
 	run(msg) {
-		const fish = Math.floor(Math.random() * 10) + 1;
+		const fishID = Math.floor(Math.random() * 10) + 1;
 		let rarity;
-		if (fish < 5) rarity = 'junk';
-		else if (fish < 8) rarity = 'common';
-		else if (fish < 10) rarity = 'uncommon';
+		if (fishID < 5) rarity = 'junk';
+		else if (fishID < 8) rarity = 'common';
+		else if (fishID < 10) rarity = 'uncommon';
 		else rarity = 'rare';
-		const worth = Math.floor(Math.random() * (fishes[rarity].max - fishes[rarity].min + 1)) + fishes[rarity].min;
-		return msg.say(`You caught a ${fishes[rarity].symbol}. I bet it'd sell for around $${worth}.`);
+		const fish = fishes[rarity];
+		const worth = randomRange(fish.min, fish.max);
+		return msg.say(`You caught a ${fish.symbol}. I bet it'd sell for around $${worth}.`);
 	}
 };

commands/games/gunfight.js

@@ -1,5 +1,5 @@
 const { Command } = require('discord.js-commando');
-const { wait, verify } = require('../../util/Util');
+const { wait, randomRange, verify } = require('../../util/Util');
 const words = ['fire', 'draw', 'shoot', 'bang', 'pull'];
 
 module.exports = class GunfightCommand extends Command {
@@ -36,8 +36,7 @@ module.exports = class GunfightCommand extends Command {
 				return msg.say('Looks like they declined...');
 			}
 			await msg.say('Get Ready...');
-			const length = Math.floor(Math.random() * (30000 - 1000 + 1)) + 1000;
-			await wait(length);
+			await wait(randomRange(1000, 30000));
 			const word = words[Math.floor(Math.random() * words.length)];
 			await msg.say(`TYPE \`${word.toUpperCase()}\` NOW!`);
 			const filter = res => [opponent.id, msg.author.id].includes(res.author.id) && res.content.toLowerCase() === word;

commands/random-res/guess-my-looks.js

@@ -1,5 +1,6 @@
 const { Command } = require('discord.js-commando');
 const { oneLine } = require('common-tags');
+const { randomRange } = require('../../util/Util');
 const genders = ['male', 'female'];
 const eyeColors = ['blue', 'brown', 'hazel', 'green', 'yellow'];
 const hairColors = ['blonde', 'brown', 'red', 'black', 'grey', 'white'];
@@ -31,10 +32,10 @@ module.exports = class GuessMyLooksCommand extends Command {
 		const eyeColor = eyeColors[Math.floor(Math.random() * eyeColors.length)];
 		const hairColor = hairColors[Math.floor(Math.random() * hairColors.length)];
 		const hairStyle = hairStyles[Math.floor(Math.random() * hairStyles.length)];
-		const age = Math.floor(Math.random() * (100 - 10 + 1)) + 10;
-		const feet = Math.floor(Math.random() * (7 - 3 + 1)) + 3;
+		const age = randomRange(10, 100);
+		const feet = randomRange(3, 7);
 		const inches = Math.floor(Math.random() * 12);
-		const weight = Math.floor(Math.random() * (300 - 50 + 1)) + 50;
+		const weight = randomRange(50, 300);
 		const extra = extras[Math.floor(Math.random() * extras.length)];
 		return msg.say(oneLine`
 			I think ${user.username} is a ${age} year old ${gender} with ${eyeColor} eyes and ${hairStyle} ${hairColor}

util/Util.js

@@ -48,6 +48,10 @@ class Util {
 		return `${prefix.slice(text.length)}${text}`;
 	}
 
+	static randomRange(min, max) {
+		return Math.floor(Math.random() * (max - min + 1)) + min;
+	}
+
 	static promisifyAll(obj, suffix = 'Async') {
 		for (const key of Object.keys(obj)) {
 			if (typeof obj[key] !== 'function') continue;