silphius/public/assets/watering-can/start.js

const {Direction, Position, Wielder} = wielder
const projected = Wielder.activeItem()?.project(Position.tile, Direction.quantize(4))
if (projected?.length > 0) {

  const {Controlled, Emitter, Sound, Sprite} = wielder
  const {TileLayers, Water} = ecs.get(1)
  const layer = TileLayers.layer(0)

  Controlled.locked = 1
  const [, direction] = Sprite.animation.split(':')
  Sprite.animation = ['idle', direction].join(':');

  Sound.play('/assets/watering-can/water.wav');

  for (const {x, y} of projected) {
    Emitter.emit({
      count: 25,
      frequency: 0.01,
      shape: {
        type: 'filledRect',
        payload: {width: 16, height: 16},
      },
      entity: {
        Forces: {forceY: 100},
        Position: {
          x: x * layer.tileSize.x + (layer.tileSize.x / 2),
          y: y * layer.tileSize.y - layer.tileSize.y,
        },
        Sprite: {
          scaleX: 0.2,
          scaleY: 0.2,
          tint: 0x0022aa,
        },
        Ttl: {ttl: 0.25},
      }
    });
  }
  await wait(0.5);

  for (const {x, y} of projected) {
    const tileIndex = layer.area.x * y + x
    let w;
    if (Water.water[tileIndex]) {
      w = Water.water[tileIndex]
    }
    else {
      w = 0
    }
    Water.water[tileIndex] = Math.min(255, 64 + w);
  }

  Controlled.locked = 0;

}