fairly give foraging results

src/lib/rpg/craftingStations.ts

@@ -1,3 +1,4 @@
+import { pickRandom } from '../util';
 import { DefaultItems, Item, Items, formatItems, getDefaultItem, getItemQuantity } from './items';
 
 export interface CraftingStation {
@@ -24,8 +25,22 @@ export const craftingStations: CraftingStation[] = [
     emoji: '🌲',
     cooldown: 60 * 5,
     formatRecipe: (_inputs, _requirements, outputs, disableBold = false) => `${outputs.map(i => formatItems(i.item, i.quantity, disableBold) + '?').join(' ')}`,
-    manipulateResults: (outputs) => 
-      outputs.map(o => ({item: o.item, quantity: Math.floor(o.quantity * Math.random())})).filter(o => o.quantity !== 0)
+    manipulateResults: (outputs) => {
+      const totalItems = outputs.reduce((a, b) => a + b.quantity, 0);
+      // grab from 1/2 to the entire pool, ensure it never goes below 1
+      const rolledItems = Math.max(Math.round(totalItems/2 + Math.random() * totalItems/2), 1);
+      const res: Items[] = [];
+      for (let i = 0; i < rolledItems; i++) {
+        const rolled = pickRandom(outputs);
+        const r = res.find(r => r.item.id === rolled.item.id);
+        if (r) {
+          r.quantity = r.quantity + 1;
+        } else {
+          res.push({ item: rolled.item, quantity: rolled.quantity });
+        }
+      }
+      return res;
+    }
   },
   {
     key: 'hand',

src/lib/util.ts

@@ -23,4 +23,8 @@ export async function writeTmpFile(data: string | Buffer, filename?: string, ext
   const path = join(tmpdir(), file);
   await fsp.writeFile(path, data);
   return path;
+}
+
+export function pickRandom<T>(list: T[]): T {
+  return list[Math.floor(Math.random() * list.length)];
 }