0x3a8060 has exactly one call site, at 0x3a7d88:
0x3a7d84 addiu r18, r2, 0x202d r18 = r2 + 0x202d
0x3a7d88 jal 0x3a8060
No 0xc0 in the eight instructions before the call, and r18 is built from a
different offset. So the 0xc0 inside the callee is a field offset applied to a
pointer the caller already built, not a chunk offset the caller resolved.
Two readings remain: r18 is core_data, making r18+0xc0 equal &moby_classes, which
fits since level 0's moby_classes.offset really is 0xc0; or 0xc0 is a member
offset in an unrelated structure and the match is coincidence.
Settling it needs the provenance of r2 at the call site -- real dataflow, not
counting. That is where this stops.
Recorded in docs/plan/level-assets.md. The previous commit's doc edit failed
silently on a line-break mismatch, so this appends rather than replaces.
284 passing with the disc present, clippy clean.