SCRIPT-8

README.md

This is a SCRIPT-8 cassette.

chains.json

{}

code.js

// title: Swirly squares

initialState = {
  totalElapsed: 0, // total time passed
  rotations: [], // each rectangle's individual rotation
}

// given a number of milliseconds and square index,
// returns the square's rotation
const getRotation = (milliseconds, i) => {
  return Math.sin(milliseconds / 400) * 16 * (i + 1)
}

update = (state, input, elapsed) => {
  state.totalElapsed += elapsed
  state.rotations = range(8).map(i => getRotation(state.totalElapsed, i))
}

draw = (state) => {
  clear()
  const { angle } = state
  range(8).forEach(i => {
    const halfSide = 8 * i / 2
    const topLeft = [64 - halfSide, 64 - halfSide]
    const topRight = [64 + halfSide, 64 - halfSide]
    const bottomRight = [64 + halfSide, 64 + halfSide]
    const bottomLeft = [64 - halfSide, 64 + halfSide]
    const color = i % 7

    // add 10 degrees to each successive square.
    // e.g. the first square gets 0 new degrees, the second one gets 10,
    // the third one gets 20, etc.
    const customAngle = state.rotations[i]
    polyStroke([topLeft, topRight, bottomRight, bottomLeft], customAngle, color)
  })
}

map.json

[]

phrases.json

{}

songs.json

{}

sprites.json

{}