RCT Graphics

Read RollerCoaster Tycoon graphic files.

Installation

npm install --save rct-graphics

Usage

var fs = require('fs')
var RCTGraphics = require('rct-graphics')

var srcData = fs.readFileSync('csg1.dat')
var srcIndex = fs.readFileSync('csg1i.dat')

var graphics = new RCTGraphics({
  srcData: srcData,
  srcIndex: srcIndex
})

// Load a palette
var palette = graphics.loadDataAtIndex(2024)

// Load a bitmap
var info = graphics.loadInfoAtIndex(2275)
var bitmap = graphics.loadDataAtIndex(2275)

API

new RCTGraphics(opts)

Create a new instance for retrieving graphics. opts should be an object with both srcData and srcIndex. srcData is a buffer with the content of csg1.dat. srcIndex is a buffer with the content of csg1i.dat.

.loadInfoAtIndex(idx)

Load info about the graphic at index idx. Returns an object with startAddress, width, height, offsetX, offsetY and flags.

.loadDataAtIndex(idx)

Loads data for the graphic at index idx. Returns either a buffer (bitmap) or a Map (palette).

Tests

To run the tests you need to supply csg1.dat and csg1i.dat. Create a folder called game-files and drop them in there. Then run npm test.