SCRIPT-8

README.md

This is a SCRIPT-8 cassette. Click here to boot it.

chains.json

{}

code.js

// title: MM2

init = state => {
  state.time = 0;
  state.ship = { x: 64, y: 115, xSpeed: 0, ySpeed: 0 };
  state.x = [10,13,26,30,29,31,26,22,8,1,2,1,4];
  state.ay = [0,2,1,8,15,20,31,31,29,22,16,7,0];
  state.asteroids = []
  
  createAsteroids(state);
}

update = (state, key, elapsed) => {
  state.time += elapsed / 42;
  state.delta = elapsed * (1 / 24);
  
  updateShip(state, key);
  updateAsteroids(state);
}

draw = state => {
  clear(3);
  sprite(state.ship.x, state.ship.y, 0);
  
  drawAsteroids(state);
}

function createAsteroids(state, key) {
  range(25).map(() => state.asteroids.push({
    x: random(0, 128), y: random(0, 100), xSpeed: random(-0.5, 0.5), size: random(2, 12), deg: random(360), dspd: random(-5, 5)
  }));
}

function updateAsteroids(state, key) {
  state.asteroids.map(a => {
    a.x += a.xSpeed;
    if (a.x < -15) a.x = 138;
    if (a.x > 138) a.x = -15;
  })
}

function drawAsteroids(state, spring=1) {
  state.asteroids.map(aster => {
    let roids = [];
    state.x.map( (a, i) => {
      let x = aster.x+a/aster.size*spring;
      let y = aster.y+state.ay[i]/aster.size*spring;
      roids.push([x,y]);
    });
    polyStroke(roids, aster.deg += aster.dspd, 5)
  });
}

function updateShip(state, key) {
  if(key.left) state.ship.xSpeed -= 0.04 * state.delta;
  if(key.right) state.ship.xSpeed += 0.04 * state.delta;
  if(key.down) state.ship.ySpeed += 0.04 * state.delta;
  if(key.up) state.ship.ySpeed -= 0.04 * state.delta;
  // decelerate
  if(state.ship.xSpeed !== 0) {
    state.ship.x += state.ship.xSpeed * state.delta;
    state.ship.xSpeed *= .95;
  }
  if(state.ship.ySpeed !== 0) {
    state.ship.y += state.ship.ySpeed * state.delta;
    state.ship.ySpeed *= .95;
  }
  // limit
  if(state.ship.y < 2) {
    state.ship.y = 2;
    state.ship.ySpeed = 0;
  }
  if(state.ship.y > state.maxY) {
    state.ship.y = state.maxY;
    state.ship.ySpeed = 0;
  }
  
  if(state.ship.x < 8) { state.ship.x = 8; }
  if(state.ship.x > 127 - 12) { state.ship.x = 127 - 12; }
}

map.json

[]

misc.json

{
  "iframeVersion": "0.1.280",
  "lines": [
    80,
    0,
    0,
    0,
    0,
    0,
    0,
    0
  ]
}

phrases.json

{}

songs.json

{}

sprites.json

{
  "0": [
    "    0   ",
    "   0 0  ",
    "   000  ",
    "  00000 ",
    "  00000 ",
    " 0000000",
    " 0077700",
    " 07   70"
  ],
  "1": [
    "        ",
    "    77  ",
    "   557  ",
    "  57 57 ",
    "  75775 ",
    "    55  ",
    "        ",
    "        "
  ],
  "2": [
    "        ",
    "   55   ",
    " 55  55 ",
    "5      5",
    "5      5",
    " 5     5",
    "  5  55 ",
    "   55   "
  ],
  "16": [
    "    7   ",
    "   222  ",
    "  22222 ",
    " 1114111",
    " 1114111",
    "  22222 ",
    "   222  ",
    "    7   "
  ],
  "17": [
    "        ",
    "        ",
    "    5   ",
    "   5 5  ",
    "  5  57 ",
    "   5 5  ",
    "    5   ",
    "        "
  ]
}