zonepick-math

ZonePick math engine for calculating areas, multipliers, win checks, and presets.

Installation

npm install zonepick-math

Usage

ESM

import { baseArea, multiplierFromPct, isWin } from 'zonepick-math';

CommonJS

const { baseArea, multiplierFromPct, isWin } = require('zonepick-math');

API

Constants

• HE - House edge (0.02)
• MAX - Maximum multiplier (1000)
• ALPHA - Power exponent (2.3)

Functions

baseArea(pct, HEv, MAXv, ALPHAv)

Calculates the base area percentage based on a percentage value.

shapeCap(width, height, shape)

Returns the maximum area cap for a given shape ('c' = circle, 'r' = rectangle, 't' = triangle).

effArea(pct, width, height, shape, HEv, MAXv, ALPHAv)

Calculates effective area, capped by shape constraints.

multiplierFromPct(pct, width, height, shape, HEv, MAXv, ALPHAv)

Gets the multiplier value for a given percentage.

findPctForX(targetX, width, height, shape, HEv, MAXv, ALPHAv)

Finds the percentage needed to achieve a target multiplier.

geom(pct, width, height, shape)

Returns geometry data (radius for circle, side for rectangle, dimensions for triangle).

isWin(x, y, centerX, centerY, pct, width, height, shape, edgeInclusive)

Checks if a point (x, y) is within the winning zone.

makePRNG(seedStr)

Creates a deterministic PRNG from a seed string.

const prng = makePRNG('seed123');
console.log(prng()); // Random number 0-1

License

MIT