Stage menu matching notes

August 19, 2026 · View on GitHub

TH08 Pause/Retry menu code remains structurally close to TH06 StageMenu, but TH08 has a 10-sprite Pause menu and a 6-sprite Retry menu. TH06 is a useful lexical skeleton; TH08 target code must still arbitrate state IDs, script IDs, and gates.
The background-capture gate is lexically ((g_EclGameTimeScaleFlags >> 1) & 1) != 0. Simplifying it to flags & 2 shortens both draw callbacks by two bytes (shr ecx,1; and ecx,1 versus and ecx,2).
Pause and Retry draw loops intentionally differ in counter signedness. Pause's 10-sprite loop uses an unsigned counter (jae at the bound), while Retry's 3/4-sprite loops use signed counters (jge).
Pause draw copies menuBackground to a branch-local AnmVm, sets zWriteDisabled, then draws the local. Preserve the typed aggregate copy so VC7 emits the target rep movsd register ownership.