import {Vector} from '@avocado/math';

function tileData(size) {
  const tileCount = Vector.area(size);
  const tileData = [];
  for (let i = 0; i < tileCount; ++i) {
    // 75% chance it's grass.
    if (Math.random() > 0.25) {
      tileData.push(Math.floor(Math.random() * 4) + 1);
    }
    else {
      // Otherwise, 50/50 between stone and dirt.
      tileData.push(Math.floor(Math.random() * 2) + 5);
    }
  }
  return tileData;
}

// Room.
export function kittyFireJSON() {

  const roomTileSize = [24, 24];
  const roomSize = Vector.mul([16, 16], roomTileSize);
  const roomJSON = {
    size: roomSize,
    layers: [
      {
        entities: [],
        tiles: {
          size: roomTileSize,
          data: tileData(roomTileSize),
        },
        tilesetUri: '/tileset.json',
      },
    ],
  };

  function positionedEntityJSON(uri, position) {
    return {
      uri,
      traits: {
        positioned: {
          state: {
            x: position[0],
            y: position[1],
          },
        },
      },
    };
  }

  function randomPosition() {
    return [
      Math.floor(Math.random() * (roomSize[0] - 100)) + 50,
      Math.floor(Math.random() * (roomSize[1] - 100)) + 50,
    ];
  }

  function addEntityWithRandomPosition(uri) {
    const position = randomPosition();
    roomJSON.layers[0].entities.push(positionedEntityJSON(uri, position));
  }

  // for (let i = 0; i < 20; ++i) {
  //   addEntityWithRandomPosition('/rock.entity.json');
  // }
  for (let i = 0; i < 30; ++i) {
    addEntityWithRandomPosition('/flower-barrel.entity.json');
  }
  for (let i = 0; i < 5; ++i) {
    addEntityWithRandomPosition('/mama-kitty-spawner.entity.json');
  }
  for (let i = 0; i < 50; ++i) {
    addEntityWithRandomPosition('/fire.entity.json');
  }
  for (let i = 0; i < 5; ++i) {
    addEntityWithRandomPosition('/blue-fire.entity.json');
  }
  return roomJSON;
}