node-wad/examples/sineCorridor.js

A Doom WAD parser and writer.

// Generated by CoffeeScript 1.12.6
var MapEdit, WAD, buildSlantProgression, buildSlantSquare, cosineSlant, fs, m, maxX, minX, rangeY, ref, w;

fs = require("fs");

ref = require('..'), WAD = ref.WAD, MapEdit = ref.MapEdit;

w = new WAD(true);

m = new MapEdit('MAP02');

minX = -1024;

maxX = 1024;

rangeY = 1024 + 512;

buildSlantSquare = function(x, y, width, height, startSlant, endSlant, bInvert, sectorData, lineData) {
  var pos;
  if (bInvert) {
    pos = [[x, y - startSlant], [x + width, y - endSlant], [x + width, y + height + endSlant], [x, y + height + startSlant]];
  } else {
    pos = [[x, y + startSlant], [x + width, y + endSlant], [x + width, y - height - endSlant], [x, y - height - startSlant]];
  }
  return m.buildSector(pos, sectorData, lineData);
};

cosineSlant = function(segmentWidth, index, maxIndex) {
  var input, output;
  input = (index / maxIndex - 0.5) * Math.PI;
  output = Math.cos(input) * segmentWidth;
  return output;
};

buildSlantProgression = function(x, y, width, height, slantFunc, resolution, sectorData, lineData) {
  var index, newSlant, pos, prevSlant;
  prevSlant = slantFunc(resolution, 0, width / resolution);
  index = 0;
  while (index < resolution) {
    pos = width / resolution * index;
    newSlant = slantFunc(width / resolution, index + 1, resolution);
    buildSlantSquare(x + pos, y, width / resolution, height, prevSlant, newSlant, true, sectorData, lineData);
    prevSlant = newSlant;
    index++;
  }
  return m;
};

buildSlantProgression(0, -rangeY / 2, -minX + maxX, rangeY, cosineSlant, 32).addThing(96, 0, 1, 0).toLumps(w);

fs.writeFileSync("testSlant.wad", w.write());