Main Loop and Map

Main Loop and Map

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Scheduler Hub (LAB_1280)

This is the high-frequency control loop once runtime is active.

Flow shape:

1. Poll event/timer bytes.
2. Wait/pump input (-$83C2 path).
3. Fetch key (-$842E path).
4. Dispatch key through table (jump from LAB_14AA family).
5. Handle mode transitions and refresh.

Hotkeys include at least C/M/O/P/Q branches into command handlers.

Screen Loader (LAB_256E)

Triggered when mode/screen id changes:

• Skips reload if mode unchanged.
• Uses A4-$EEF4 as source pointer.
• Copies multiple 0x100 blocks into working tables (A4-$AB46, A4-$AA46, etc).

This is a major state/materialization step for map/event context.

Overland Map View (LAB_24C4)

Nested 16x16 tile draw loops:

• Tile source table at A4-$AA46.
• Draw calls through -$83E0(A4).
• Movement from key mapping in A4-$864F:
  • N -> 0x20
  • S -> 0x21
  • E -> 0x22
  • W -> 0x23
• ESC (0x1B) sets A4-$86B0 and exits map loop.

After exit it re-enters session refresh (LAB_545E path).