@df0/hashing
v0.0.6
Published
This package contains MiMC hashing utilities for use with Dark Forest. The MiMC algorithm is used for both finding planet hashes and calculating the perlin in-game. Among other things, these values are often needed for generating Snarks.
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@df0/hashing
This package contains MiMC hashing utilities for use with Dark Forest. The MiMC algorithm is used for both finding planet hashes and calculating the perlin in-game. Among other things, these values are often needed for generating Snarks.
Installation
You can install this package using npm or
yarn by running:
npm install --save @df0/hashingyarn add @df0/hashingWhen using this in a plugin, you might want to load it with skypack
import * as hashing from 'http://cdn.skypack.dev/@df0/hashing';Table of contents
Interfaces
Variables
Functions
Variables
Fraction
• Fraction: IFraction
MAX_PERLIN_VALUE
• Const MAX_PERLIN_VALUE: 32
Functions
getRandomGradientAt
▸ getRandomGradientAt(point, scale, randFn): Vector
Parameters
| Name | Type |
| :------- | :---------- |
| point | Vector |
| scale | IFraction |
| randFn | HashFn |
Returns
Vector
mimcHash
▸ mimcHash(key): (...inputs: number[]) => BigInteger
The primary function used to build any MiMC hashing algorithm for Dark Forest.
Parameters
| Name | Type | Description |
| :---- | :------- | :----------------------------------------------------------------------------------------------- |
| key | number | The key for the MiMC algorithm. Will usually be PLANETHASH_KEY, SPACETYPE_KEY, or BIOMEBASE_KEY. |
Returns
fn
▸ (...inputs): BigInteger
Parameters
| Name | Type |
| :---------- | :--------- |
| ...inputs | number[] |
Returns
BigInteger
mimcSponge
▸ mimcSponge(inputs, nOutputs, rounds, key): BigInteger[]
Parameters
| Name | Type |
| :--------- | :------------- |
| inputs | BigInteger[] |
| nOutputs | number |
| rounds | number |
| key | number |
Returns
BigInteger[]
modPBigInt
▸ modPBigInt(x): BigInteger
Modulo a number with the LOCATION_ID_UB constant. If the result is < 0, the LOCATION_ID_UB will then be added.
Parameters
| Name | Type | Description |
| :--- | :------- | :------------------------------------------ |
| x | number | The number to modulo against LOCATION_ID_UB |
Returns
BigInteger
modPBigIntNative
▸ modPBigIntNative(x): BigInteger
Modulo a BigInt with the LOCATION_ID_UB constant. If the result is < 0, the LOCATION_ID_UB will then be added.
Parameters
| Name | Type | Description |
| :--- | :----------- | :------------------------------------------ |
| x | BigInteger | The number to modulo against LOCATION_ID_UB |
Returns
BigInteger
perlin
▸ perlin(coords, options): number
Calculates the perlin for a location, given the x,y pair and the PerlinConfig for the game.
Parameters
| Name | Type | Description |
| :-------- | :--------------------------------------------- | :--------------------------------------------------------------------- |
| coords | IntegerVector | An object of the x,y coordinates for which perlin is being calculated. |
| options | PerlinConfig | An object containing the configuration for the perlin algorithm. |
Returns
number
rand
▸ rand(key): (...args: number[]) => number
Parameters
| Name | Type |
| :---- | :------- |
| key | number |
Returns
fn
▸ (...args): number
Parameters
| Name | Type |
| :-------- | :--------- |
| ...args | number[] |
Returns
number
seededRandom
▸ seededRandom(seed): number
Generate a random number based on some seed. Useful for procedural generation.
Parameters
| Name | Type | Description |
| :----- | :------- | :----------------------------- |
| seed | number | The seed of the random number. |
Returns
number