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Implement indexed party roster sort

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gamer147
2026-07-21 11:56:04 -04:00
parent e81a142f23
commit a0df85825e
9 changed files with 251 additions and 28 deletions
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docs/opcode-reference.md
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@@ -215,6 +215,13 @@ Operand 2 names the base cell itself: a global-bank operand produces a global re
- **grounding:** source=investigation, confidence=high
- **evidence:** Ghidra /v2: op_0x6c_handler@0x426d90 resolves operand 1 as a writable VM pointer and fills operand-2 consecutive dwords with ctx->anti_tamper_b, the native encoded representation of logical integer zero. INITCONFIG@0x30 clears G[0x2e49..0x2e55] before registering those 13 profile cells; treating operand 2 as a scalar source incorrectly wrote 13 to G[0x2e49] and disabled ROOM's character greeting/farewell voices. /v2 annotated and saved 2026-07-21.
### 0x12f `sort-indices-by-key-sum` (sort-indices-by-key-sum, argc 4)
- **summary:** (out_indices, key_a, key_b, count) - write a stable ascending permutation of indices 0..count-1, ordered by the signed 32-bit sum key_a[index] + key_b[index].
- **grounding:** source=investigation, confidence=high
- **evidence:** Ghidra /v2: op_0x12f_sort_indices_by_key_sum@0x429360 resolves operands 1-3 as integer-array bases, seeds out_indices[0]=0, then performs insertion sort. It shifts a prior index only when signed unchecked(key_a[new]+key_b[new]) is strictly less than the prior sum, so equal keys retain source order. Operand 4 is fetched as the exclusive count. The final native loop merely re-encodes direct writes into AGE's protected integer representation. Release corpus: 40 sites. CHMENU@0x1c9b sorts 100 party-slot keys and reads the populated tail; a no-op leaves the initial party slot undiscoverable even though UNITECH created it.
Implemented with domain-preserving addressed-array access, native signed 32-bit key addition/overflow, stable insertion ordering, repeated count reads, and the native unconditional out_indices[0]=0 write. Focused tests lock stability/overflow/zero-count behavior; a natural SYSTEM4-to-SC0000 state carried into release CHMENU proves the initial slot remains selected after the real roster sort.
### 0x135 `bit-set` (bit-set, argc 2)
- **summary:** (value)(bit_index) - set the indexed bit in the destination integer.
- **grounding:** source=investigation, confidence=high
@@ -1022,10 +1029,6 @@ op 0x90 (u0041BEB0, argc 7): `0x90 x y w h tgt_a tgt_b tgt_c`. Kelebek left it "
- **summary:** —
- **grounding:** source=kelebek, confidence=med
### 0x12f `u0041ECB0` (u0041ECB0, argc 4)
- **summary:** —
- **grounding:** source=kelebek, confidence=low
### 0x132 `u0041EF00` (u0041EF00, argc 1)
- **summary:** —
- **grounding:** source=kelebek, confidence=low