Three ways of combining the bat prototype with real map data. Same game underneath,
same real place, three different answers to "where does the data show up?"
The place is Woodchester Park, Gloucestershire. It holds maternity roosts
of greater and lesser horseshoe bats - the bat you fly - and Roger Ransome has studied that
population since 1959, the longest continuous study of a wild mammal by one researcher.
The data is real and open. Ground height from AWS terrarium terrain tiles
at z14, 129x129 samples over 1200 m. Bats from the GBIF occurrence API, filtered to
CC-BY-4.0 and CC0 only, because roughly a third of GB bat records
are non-commercial and this is a commercial venture. Baked once, offline, into static files -
no API keys, no login, nothing phones home.
On resolution. The elevation source resolves to about 30 m and most bat
records are published rounded to two decimal places, which means a cell roughly 690 m by
1113 m. The playfield is 100 m across. Every screen says so. The 3D world is built from the
data; the map is where correlation is shown; no pin claims a bat was recorded at a
particular tree.
Prototype builds for review, not finished levels. Variant 3 is the least complete of the
three.