Add dice

commands/dice.js

@@ -0,0 +1,31 @@
+function diceRoll(side) {
+
+	return Math.ceil(Math.random() * side);
+
+}
+module.exports = () => async (ctx) => {
+
+	const numDice = parseInt(ctx.match[1] || "1");
+	const diceSides = parseInt(ctx.match[2]);
+	const rolls = Array(numDice)
+		.fill(0)
+		.map(() => diceRoll(diceSides));
+	const total = rolls.reduce((acc, curr) => acc + curr, 0);
+	const message = rolls
+		.map((i) => `_You roll a_ *D${diceSides}* _and get a_ *${i}*`)
+		.join("\n");
+	let totalMessage = "";
+	if (numDice > 1 || ctx.match[3])
+		totalMessage = `*Total:* ${total}`;
+
+	if (ctx.match[3]) {
+
+		const modifier = parseInt(ctx.match[5]);
+		const sign = ctx.match[4];
+		if (sign === "+") totalMessage += ` + ${modifier} = ${total + modifier}`;
+		else totalMessage += ` - ${modifier} = ${total - modifier}`;
+
+	}
+	ctx.reply(message + "\n\n" + totalMessage, { parse_mode: "Markdown" });
+
+};

commands/index.js

@@ -10,6 +10,7 @@ const info = require("./info");
 const expand = require("./expand");
 const roleplay = require("./roleplay");
 const suggest = require("./suggest");
+const dice = require("./dice");
 
 module.exports = (bot, [ questions, kys, insults, commands_list, words, roleplay_data ], feedback_id, apiToken, ugokiRoot, axios) => {
 
@@ -69,6 +70,7 @@ module.exports = (bot, [ questions, kys, insults, commands_list, words, roleplay
 	bot.command("donate", (ctx) => ctx.reply("Thanks for considering to donate."
 		+ " To support the development and hosting of Quadnite Bot, you can "
 		+ "donate here: https://liberapay.com/ceda_ei/"));
+	bot.hears(/(\d*)d(\d+)(\s*([-+])\s*(\d+))?/, dice());
 
 	function getGetGif(command) {