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mcpplibs.mwrap.box2d 3.2.0: box2d-m (Box2D as C++23 modules) - #615
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Descriptor pkgs/mwrap/box2d.lua (form A, the immutable mwrap-3.2.0 release asset, tagged on box2d-m's merged main; CN is the gitcode mcpp-res/mwrap-box2d mirror with the same bytes), over compat.box2d 3.2.0. Consumer tests/mwrap/box2d-physics: a box that falls, rests and sleeps, a ray cast, the mapped constants and id macros, and the wrapper's struck 20-row pyramid, whose transform hash (0x790D7C28) is the one every box2d-m CI row computes, in a consumer compiled without any floating-point flag; and the side header beside the import. The installed-template check in validate.yml with its deployment contract (the wrapper's LICENSE/NOTICE, Box2D's README and LICENSE, byte for byte in a relocated bundle), and the plan.
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Based on
main, which now has compat.box2d 3.2.0 (#611); rebased onto it.Adds mcpplibs.mwrap.box2d 3.2.0 — mcpplibs/box2d-m (PR mcpplibs/box2d-m#1, merged; tag
mwrap-3.2.0on the merged main commit361aa31), Box2D 3.2.0 (MIT) as C++23 modules over compat.box2d.pkgs/mwrap/box2d.lua: form A, release assetmwrap-3.2.0/box2d-m-3.2.0.tar.gz(sha256a7b448ea…7572); CNgitcode.com/mcpp-res/mwrap-box2drelease 3.2.0, byte-identical;extensions.autoupdateonmwrap-${version}.tests/mwrap/box2d-physics(member): behavior (a box that falls, rests and sleeps, a ray cast, constants and id macros, and the struck-pyramid determinism hash0x790D7C28in a consumer compiled without any floating-point flag) and the side header beside the import.validate.yml: installed archive →mcpp newdefaultphysicstemplate → strict build/run → relocated self-contained bundle;check_installed_template.pygets the Box2D deployment contract (wrapper LICENSE/NOTICE, Box2D README/LICENSE, byte-identical)..agents/docs/2026-10-28-add-box2d-mwrap-plan.md.Module surface: 110 types, 3 opaque structs, 176 enumerators, 506
B2_APIfunctions, 91 inline functions, 8 vector operators andb2_lengthUnitsPerMeterbyexport using; the 13static constobjects as constants inmcpplibs::mwrap::box2d;mcpplibs.mwrap.box2d.macroswith 20 constants, 5 length-unit functions (B2_LINEAR_SLOP()…) and 3 constexpr id functions; 12 macros stay in<mwrap/box2d/macros.hpp>.Determinism (box2d-m CI, dev and release, 1/2/4/8 workers, a user task system, the SSE2 fallback): identical on Linux x86_64 GCC 16.1 and LLVM 23.1.3, Linux arm64 GCC and LLVM, macOS arm64, Windows x86_64 and wasm32-emscripten — falling hinges asleep at step 299, hash
0x465F3DF4(upstream's pin); struck pyramid hash0x790D7C28.Locally (mcpp 2026.10.26.1):
bash tests/run_members.sh box2d-physicsok;check_installed_template.py --package mcpplibs.mwrap.box2d@3.2.0 --deployok (4 byte-identical license files).