genmap2d v1.1.3

Generation of 2D maps

.

• Install

npm i genmap2d

• Configuration

  Parameter	Type	Default
  width	number	800
  height	number	600
  rarity	number	100
  density	number	0.45

• Usage

const genmap2d = require('genmap2d');
const map = genmap2d({
  /* configuration */ 
});

• Example

const CONFIG = {
  width: 800,
  height: 600
};

// Generation of map
const genmap2d = require('genmap2d');
const map = genmap2d(CONFIG); 

// Creating canvas
const field = document.getElementById('field').getContext('2d');

// Creating image
const imageData = field.createImageData(CONFIG.width, CONFIG.height);
const data = imageData.data;

// Filling image from map
for(let i = 0; i < CONFIG.width; ++i) {
  for(let j = 0; j < CONFIG.height; ++j) {
    const x = (j * CONFIG.width + i) * 4;
    for (let c = 0; c < 3; c++) {
        data[x + c] = 0;
    }
    // Set pixel transparency (0 or 255)
    data[x + 3] = map[i][j] * 255;
  }
}

// Drawing image
field.putImageData(imageData, 0, 0);