SCRIPT-8

README.md

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code.js

// title: Time-travel demo

initialState = {
  actors: [
    {
      name: 'ghost',
      x: 64,
      y: 0,
      dy: 0.6,
      sprite: 1
    },
    {
      name: 'mari',
      x: 0,
      y: 128 - 16,
      dx: 1.5,
      sprite: 0
    },
  ]
}

drawActors = (state, fade) => {
  state.actors.forEach(actor => {
    sprite(actor.x, actor.y, actor.sprite, fade ? -4 : 0)
  })
}

update = (state, input, elapsed) => {
  // modify ghost
  state.actors[0].y += state.actors[0].dy
  if (state.actors[0].y >= 128 - 16) {
    state.actors[0].dy = 0
  }
  
  // modify mario
  if (input.right) {
    state.actors[1].x += state.actors[1].dx
  }
  
}

draw = state => {
  clear()
  range(16).forEach(i => {
    sprite(i * 8, 128 - 8, 2)
  })
  drawActors(state)
}

sprites.json

{
  "0": [
    "   2220 ",
    "   22222",
    "  30370 ",
    "  300330",
    "   3000 ",
    " 220331 ",
    "03333352",
    " 3    4 "
  ],
  "1": [
    "        ",
    "  2224  ",
    " 222224 ",
    "22002004",
    "22072704",
    "22222244",
    "22222244",
    "2 22 244"
  ],
  "2": [
    "22224224",
    "23445445",
    "24445445",
    "24445445",
    "24663224",
    "22242445",
    "24342345",
    "36654665"
  ]
}