feat: dice plugin

Author: stdcall0

apps/dice.ts

@@ -0,0 +1,43 @@
+import PLUGIN_ID from '#gc.id';
+import { Plugin, Logger, Config } from '#gc';
+
+import _ from 'lodash';
+
+export class DicePlugin extends Plugin {
+    constructor() {
+        super({
+            name: '骰娘插件',
+            dsc: '随机数生成器，支持多种骰子类型与复杂表达式',
+            event: 'message',
+            priority: '98',
+            rule: [
+                {
+                    // Basic dice: [m]d/D[n] (e.g. 1d6, 2d10, 3D20)
+                    reg: '^([1-9]\\d?)[dD]([1-9]\\d{0,5})$',
+                    fnc: 'basic_dice'
+                }
+            ]
+        });
+    }
+
+    async basic_dice() {
+        const msg = this.e.msg;
+        const dicePattern = /^([1-9]\d?)[dD]([1-9]\d{0,5})$/;
+        const match = msg.match(dicePattern);
+
+        if (!match) return; // should not happen due to rule
+
+        const numDice = parseInt(match[1]);
+        const numSides = parseInt(match[2]);
+
+        if (numDice >= 1 && numDice < 100 && numSides >= 1) {
+            const rolls: number[] = [];
+            for (let i = 0; i < numDice; i++) {
+                rolls.push(_.random(1, numSides));
+            }
+            const total = rolls.reduce((a, b) => a + b, 0);
+            const response = `你掷出了 ${numDice}d${numSides}：\n点数：${rolls.join(', ')}\n总和：${total}`;
+            await this.e.reply(response, true);
+        }
+    }
+}