colinjfw

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colinjfw

function move(state) {
  console.log(state);
  return { move: 'right' }
}

colinjfw

{
  "game": {
    "id": "game-id-string"
  },
  "turn": 1,
  "board": {
    "height": 11,
    "width": 11,
    "food": [{
      "x": 1,

colinjfw

function move(state) {
  const head = state.you.body[0];
  ...
}

colinjfw

function moveAsCoord(move, head) {
  switch (move) {
    case 'up':
      return {x: head.x, y: head.y-1}; 
    case 'down':
      return {x: head.x, y: head.y+1};
    case 'left':
      return {x: head.x-1, y: head.y}; 
    case 'right':
      return {x: head.x+1, y: head.y};	

colinjfw

function move(state) {
  const head = state.you.body[0];
  const moves = ['up', 'down', 'left', 'right'];

  for (const move of moves) {
    const coord = moveAsCoord(move, head);
    // We now know where this is going to be!	
  }
}

colinjfw

function offBoard(state, coord) {
  if (coord.x < 0) return true;
  if (coord.y < 0) return true;
  if (coord.y >= state.board.height) return true;
  if (coord.x >= state.board.height) return true;
  return false; // If it makes it here we are ok.
}

colinjfw

function move(state) {
  const head = state.you.body[0];
  const moves = ['up', 'down', 'left', 'right'];

  for (const move of moves) {
    const coord = moveAsCoord(move, head);
    if (!offBoard(state, coord)) {
      return {move: move};
    }
  }

colinjfw

function coordEqual(a, b) {
  return a.x === b.x && a.y === b.y
}

colinjfw

function move(state) {
  const head = state.you.body[0];
  const neck = state.you.body[1];
  const moves = ['up', 'down', 'left', 'right'];

  for (const move of moves) {
    const coord = moveAsCoord(move, head);
    if (!offBoard(state, coord) && !coordEqual(coord, neck)) {
      return {move: move};
    }