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Add hidden title debug mode and pace menu polls

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gamer147
2026-07-20 23:38:19 -04:00
parent b8cf21245a
commit 0dfba316f1
10 changed files with 67 additions and 11 deletions
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docs/opcode-reference.md
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@@ -273,7 +273,7 @@ Implemented as a whole-stack root-reload boundary in the persistent VM. A reques
- **grounding:** source=investigation, confidence=high
- **evidence:** Ghidra: dispatch ctx[0x26c93+0xc8]=0x420ec0; sleep_op_0xc8 + sleep_timer_arm decoded/annotated 2026-07-08. docs/engine-re.md sleep section.
Native handler sleep_op_0xc8 @0x420ec0 is NON-BLOCKING: it arms a timer (sleep_timer_arm @0x44cff0 at ctx+0x5f304 = active flag + start tick + duration) that the engine main loop polls, resuming the script when elapsed. Operand UNIT = MILLISECONDS (start = ms tick source DAT_0056f3d4, timeGetTime/GetTickCount class). duration<10 fast-paths via [0x56f0b8]; all real scene sleeps (100/750/1000) are >=10. The handler also records its generic 3-dword instruction length and runs anti-tamper checks, neither needed host-side. Port equivalent: the Godot host parks the VM thread for duration ms while the presentation compositor continues. Sleep is one proven presentation-capable service boundary; ordinary AE setup runs burst-fast to 0x21c and is not paced per opcode. Headless hosts no-op it (parity).
Native handler sleep_op_0xc8 @0x420ec0 is NON-BLOCKING: it arms a timer (sleep_timer_arm @0x44cff0 at ctx+0x5f304 = active flag + start tick + duration) that the engine main loop polls, resuming the script when elapsed. Operand UNIT = MILLISECONDS (start = ms tick source DAT_0056f3d4, timeGetTime/GetTickCount class), and the native arm helper clamps duration to a minimum of 1 ms. ROOM's input loop deliberately uses sleep(0), making it a one-engine-tick yield rather than a no-op. The handler also records its generic 3-dword instruction length and runs anti-tamper checks, neither needed host-side. Port equivalent: the Godot host parks the VM thread for max(1, scaled duration) ms while the presentation compositor continues. Sleep is one proven presentation-capable service boundary; ordinary AE setup runs burst-fast to 0x21c and is not paced per opcode. Headless hosts no-op it (parity).
### 0xd3 `begin-timed-callback-sequence` (u00425960, argc 0)
- **summary:** Clear and initialize the current script frame's timed local-callback sequence.