beef up math.random

src/prelude/math.ts

@@ -16,7 +16,10 @@ export const math = {
     if (n < 0) throw new Error(`sqrt: cannot take square root of negative number ${n}`)
     return Math.sqrt(n)
   },
-  random: () => Math.random(),
+  random: (min = 0, max = 1) => {
+    if (min === 0 && max === 1) return Math.random()
+    return Math.floor(Math.random() * (max - min + 1)) + min
+  },
   clamp: (n: number, min: number, max: number) => {
     if (min > max) throw new Error(`clamp: min (${min}) must be less than or equal to max (${max})`)
     return Math.min(Math.max(n, min), max)