The obj_within_block check using Setup.SortingSphere.Radius rejects
far too many spawns. Sorting spheres for trees are 5-10m, creating
a wide exclusion zone around every landblock edge. WorldBuilder
produces correct scenery with just bounds+road+building+slope checks
and no bounding sphere check. Revert to match WorldBuilder's approach.
The single extra tree near the road at vtx=(4,8) in 0xA9B1 remains
as a known minor discrepancy from retail — root cause TBD.
Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>
e3c36b5bf8