silphius/public/assets/tomato-seeds/projection-check.js

const filtered = []

for (let i = 0; i < projected.length; ++i) {
  const entities = Array.from(ecs.system('UpdateSpatialHash').within(
    projected[i].x * layer.tileSize.x,
    projected[i].y * layer.tileSize.y,
    layer.tileSize.x,
    layer.tileSize.y,
  ));
  let hasPlant = false;
  for (let j = 0; j < entities.length; ++j) {
    if (entities[j].Plant) {
      hasPlant = true
    }
  }
  if (!hasPlant) {
    const tile = layer.tile(projected[i])
    if ([7].includes(tile)) {
      filtered.push(projected[i])
    }
  }
}

return filtered