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Implement integer stack opcodes

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gamer147
2026-07-29 15:18:07 -04:00
parent 682f65318b
commit 71ae1b7c5b
6 changed files with 200 additions and 6 deletions
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docs/phase-b-framework.md
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@@ -1075,6 +1075,23 @@ fields are saved.
**NEXT:** implement the coherent `0x137`-`0x139` integer-stack family, then `0x241`, then the DEBUG-only
`0x24d` compositor slice.
**INTEGER STACK `0x137`-`0x139` IMPLEMENTED (2026-07-29):** the VM now owns eleven safely isolated,
handler-addressable LIFO slots. They are constructed at VM scene entry, reconstructed empty on whole-root
scene reload, and individually replaced by `0x137`; `0x138` pushes signed dwords and `0x139` pops in LIFO
order. Empty pop writes success zero while preserving the prior value destination instead of leaking
native's reused internal EngineCtx pointer. Slot 10 is intentionally independent logical state rather than
AGE's adjacent numeric-glyph-table corruption.
Three focused regressions cover independent LIFO ordering and signed values, reset plus empty-output
behavior, safe slot 10, pre-reset availability, and root-reload lifetime. `CALLBACK_LOAD`'s shipped
`0x137` is closed, while unobserved `0x138`/`0x139` are implemented for wider AGE compatibility. The
remaining effectful inventory is 2 opcodes / 3 instructions: singleton `0x241` and DEBUG-only `0x24d` x2.
Validation passes 504/504 engine tests, opcode/global/EngineCtx build and lint suites, the zero-warning
Godot build, clean diff checking, and the Himegari-targeted threaded `SELFTEST OK`.
**NEXT:** implement positioned movie playback `0x241` with synchronized FFmpeg initial seek, then finish
the DEBUG-only `0x24d` green-channel movie-mask compositor.
## Later Phase B breadth
**INIT data-semantics side track started (2026-07-22).** Before naming more gameplay state, the static