prismarine-schematic/test/arrayfuncs.test.js

Read, write and manipulate minecraft schematics

/* eslint-env jest */

const { Schematic } = require('prismarine-schematic')
const fs = require('fs')
const path = require('path')
const { Vec3 } = require('vec3')

const buffer = fs.readFileSync(path.join(__dirname, 'schematics', 'viking-house1.schematic'))

describe('foreach test', () => {
  const data = []
  test('viking house', async () => {
    const schem = await Schematic.read(buffer, '1.16.4')
    schem.forEach((block, pos) => {
      data.push(block)
    })
    expect(data[0].name).toStrictEqual('grass_block')
  })
})

describe('map test', () => {
  test('viking house', async () => {
    const schem = await Schematic.read(buffer, '1.16.4')
    const data = await schem.map((block) => block)
    expect(data[0].name).toStrictEqual('grass_block')
  })
})

describe('editing test', () => {
  test('adding and removing blocks', async () => {
    const Version = '1.16'
    const Block = require('prismarine-block')(Version)
    const mcData = require('minecraft-data')(Version)
    const schem = new Schematic(Version, new Vec3(10, 10, 10), new Vec3(0, 0, 0), [], [])
    schem.setBlock(new Vec3(1, 1, 1), new Block(mcData.blocksByName.chest.id, 1, 0))
    schem.setBlock(new Vec3(1, 2, 1), new Block(mcData.blocksByName.dirt.id, 1, 0))
    schem.setBlock(new Vec3(1, 3, 1), new Block(mcData.blocksByName.stone.id, 1, 0))

    expect(schem.getBlock(new Vec3(1, 1, 1)).type).toStrictEqual(mcData.blocksByName.chest.id)
    expect(schem.getBlock(new Vec3(1, 2, 1)).type).toStrictEqual(mcData.blocksByName.dirt.id)
    expect(schem.getBlock(new Vec3(1, 3, 1)).type).toStrictEqual(mcData.blocksByName.stone.id)

    // Now remove some
    schem.setBlock(new Vec3(1, 1, 1), null)
    schem.setBlock(new Vec3(1, 3, 1), null)

    expect(schem.getBlock(new Vec3(1, 1, 1)).type).toStrictEqual(mcData.blocksByName.air.id)
    expect(schem.getBlock(new Vec3(1, 2, 1)).type).toStrictEqual(mcData.blocksByName.dirt.id)
    expect(schem.getBlock(new Vec3(1, 3, 1)).type).toStrictEqual(mcData.blocksByName.air.id)

    expect(schem.palette.filter(b => !!b).length).toStrictEqual(1)
    expect(schem.blocks.filter(b => !!b).length).toStrictEqual(1)
  })
})

describe('to-fromJSON', () => {
  test('stringify viking house', async () => {
    const schem = await Schematic.read(buffer, '1.16.4')
    const data = schem.toJSON()
    expect(data.length > 0).toBeTruthy()
  })

  test('parse viking house', async () => {
    const schem = await Schematic.read(buffer, '1.16.4')
    const data = schem.toJSON()
    const schemParsed = Schematic.fromJSON(data)
    expect(schemParsed).not.toBeNull()
    expect(schemParsed.palette.length).toStrictEqual(schem.palette.length)
    expect(schemParsed.blocks.length).toStrictEqual(schem.blocks.length)
  })
})