It scans all 232 bed columns and records the highest object pixel in each column.
Between the first and last occupied columns, it calculates:
- Overall height: The blanket’s usual upper height, ignoring a few unusually tall pixels.
- Unevenness by comparing every column with the average height.
- Tilt by comparing the average height of the first 12 columns with the last 12.
- Waves by measuring height changes between every pair of neighboring columns.
These penalties are weighted: height 30%, unevenness 30%, tilt 20%, waves 20%.
Finally, it checks whether every item was placed and subtracts small room-cleanup penalties.
At first it was only checking the start and end points and it was too hard to get a good score so I changed it a lot. Also it still doesn't work very well, but it is enough I think.