WalkScreenClip ports PrimD3DRender::xformStart @0x0059b990 (homogeneous
viewport coords, y-flip, no divide) and ACRender::polyClipFinish
@0x006b6d00 (w>=cdstW plane then last-to-first edge passes, inside =
side<=0 homogeneous 2D cross, reverse-scan passes with original-winding
restore, <3 early-outs). WalkViews ports the view_type/portal_view_type
data model and Render::copy_view @0x0054dfc0 exactly: in-place divide,
the keep/last/stl/second pruning bookkeeping with all three closing
wrap checks, <3 reject leaving dest untouched, cap 31, pool-base reset
at view_count==0, retail fabs on copy, and edge planes
N=normalize(cross(ray[k+1],ray[k])), d=-dot(N,eye) behind an
IWalkRayCaster seam. Thirteen new tests; Walk namespace 85/85.
Co-Authored-By: Claude Fable 5 <noreply@anthropic.com>
The second decomp round (flood bookkeeping/propagation, view-clip
support, landscape visibility) is archived Ghidra-arbitrated - it caught
a load-bearing BN inversion (InsCellTodoList pops NEAREST-first, which
is what makes the draw list far-to-near) and three more traps (the 192m
elided constant, the min/max double positional swap, the copy_view
cross order - the walk doc section 6 is corrected). WalkVisibilityMath
ports get_pt_limit @0x0054b840, get_clip_height @0x0054cff0,
corner/block_plane_check @0x0054b930/@0x0054d060, block_check
@0x0054dc50, and viewconeCheck @0x0054c250 with retail boundary
semantics (strict cull, inclusive partial, touch-out=Outside /
touch-in=EntirelyInside) under 23 focused tests.
Co-Authored-By: Claude Fable 5 <noreply@anthropic.com>
WalkEvent mirrors the FW0 oracle-trace vocabulary one-to-one (Landscape,
Building, DrawInside, DrawCells) as the conformance surface RetailFrameWalk
emits; the FW2 ordered draw stream layers on later without changing it.
Co-Authored-By: Claude Fable 5 <noreply@anthropic.com>
LandWalkOrder ports LScape::get_block_order @0x00504c50 (near-to-far ring
list, walked backwards by LScape::draw), CLandBlock::calc_sq_draw_order
@0x0052f4a0 (cell array filled backwards from the closest cell),
LandDefs::get_dir @0x005a9aa0, and the 9-case closest-cell direction
switch. The shared 8-slot ring coefficient tables were byte-decoded from
the PDB-paired binary (block VA 0x0081cc6c.., cell VA 0x0081df88.. -
identical sets); the intra-ring visit order is preserved exactly because
it decides draw order between equidistant blocks and the oracle traces
pin it. Thirty focused tests cover coverage/ordering invariants, the
hand-expanded ring-1 pattern, and the direction/closest-cell contracts.
Co-Authored-By: Claude Fable 5 <noreply@anthropic.com>
