Random Charts

A small library for the easy creation of random charts.

Setup

• Assumes node installed
• npm install
• npm run build (jshint, clean, babel, test)

Usage Examples

Note: Items in a chart can be just Strings or a deep object. (See tests in the charts folder.)

//Basic Chart (basic items selection = equal chance of all items)
import {SimpleRandomChart, CreateChartForItems} from './SimpleRandomChart';
const items = ["Item1", "Item2"];
const chart = SimpleRandomChart("NewChartName", items); 
//OR const chart = CreateChartForItems(items); (creates a random chart name for you.)
const singleItem = chart.get();
const sixItems = chart.get(6);

Example showing item selection with dice rolling. More than 1 die rolled produces a bell curve. 2d4 Bell curve from AnyDice

//Basic Chart with items selected by Rolling Dice (2d4 Bell curve)
const diceItems = ["2", "3", "4", "5", "6", "7", "8"];
const selectionStrategy2d4 = new DiceRollItemSelection(2, 4);
const diceChart = SimpleRandomChart("DiceChart", diceItems, "randSeed", selectionStrategy2d4;
const singleDiceItem = chart.get(); //rolled 2d4 to get an item from the chart.
const sixDiceItems = chart.get(6);

//chart result example
[
  {
    "index": 1,
    "item": "Item2"
  }
]

Example showing rolling a table that links to other tables.

RandomChart
const subTable = {
    linked: false,
    name: "A SubTable",
    items: ["Chart2-A", "Chart2-B", "Chart2-C"]
};
const mainTable = {
    name: "Some Linked Chart",
    items: ["Chart1-1", "Chart1-2", "Chart1-3", {linkedTable:subTable.name, description:"Roll on Subtable: " + subTable.name}]
};

const randomSeedThatReturnsIndexOf3ToForceTestOfLinkedItem = 3; //get the linkedItem to demonstrate rolling into subtables
const chart = new LinkedChart(mainTable.name, mainTable.items, [subTable], randomSeedThatReturnsIndexOf3ToForceTestOfLinkedItem);
const singleItem = chart.get(); //

//Linked chart result example
[
  { 
    index: 3,
    item:
        { 
            linkedTable: 'A SubTable',
            description: 'Roll on Subtable: A SubTable' 
        },
    subResult: 
    [ 
        { 
            index: 2, 
            item: 'Chart2-C' 
        } 
    ] 
  }
]