khallaandClaude Opus 5.5
b452558122
- Megamap / TAB map zoomed view: heroes' markers and the other symbols (integer 200h centre immediates) follow the view's centre. - Map reveal: the hero's reveal stamp scaled 10x (mods/mapreveal.cpp, docs/map-reveal.md); creatures on the zoomed map shown within 10x the sight range. - Load / save progress screen drawn on the rock background across the full width, the picture blended over it (mods/loadingscreen.cpp); the classic 1024x768 frame is gone. Co-Authored-By: Claude Opus 5.5 (1M context) <noreply@anthropic.com>
45 lines
2.2 KiB
Markdown
45 lines
2.2 KiB
Markdown
# Map reveal (fog of war)
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## Request (2026-10-25)
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"Can we increase the base vision range (for map fog of war reveal) by x10 or
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so?"
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## Measured
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- Each sector (64x64 tiles) keeps a 32x32 bit mask at +0x180 (128 bytes, one
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bit per 2x2 tiles): `Sector_SetExplored` 0x622bf0, copied out by 0x622c60,
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loaded from the save by 0x622c80 (0x606ae0). The zoomed map view turns it
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into its fog texture (FOGOFWAR01.TGA, 0x639030).
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- `World_SetExplored` 0x638f00 (thiscall on `*0xad14e0`, (tile x, tile y,
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explored), ret 0xc) finds the tile's sector; tiles >= 0x2000 and sectors
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that aren't loaded are ignored.
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- `RevealAroundHero` 0x599730 (creature thiscall (tile x, tile y, sight), ret
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0xc), called from about ten places in the creature code: only for the local
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hero, only when its tile changed (last tile 0xad2384 / 0xad2388), it calls
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`World_SetExplored` for every tile of a stamp centred on the hero. Sight 0:
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the 29x29 circle at 0x88f5cc (radius 14 tiles). The callers choose 1 or 2
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from the weather object (0x417e50: +0x9e0c set -> 2, 0x41ba90 true -> 1);
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those use the 15x15 stamps at 0x88f328 + (sight - 1) * 225 (radius 7, 5;
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a third one, radius 3, is unused).
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## Mod (`mods/mapreveal.cpp`)
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After the original revealed at a new tile, the same stamp scaled up 10x is
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revealed too, one cell (2x2 tiles) at a time through `World_SetExplored`: by
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day a circle of about 140 tiles radius, at night / in fog 70 / 50. About 15000
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cells per tile step by day. Sectors beyond the loaded ones are not marked.
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## Creatures on the map (2026-10-25)
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"Enemies on the TAB map don't show unless in very short range." The zoomed
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map view (0x6cc950, large map and TAB map) draws a creature off explored
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ground, or a hostile one, only within a sight range of the hero: |dx| and |dy|
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(world units, about 53.7 per tile) against a float at [esp+14h], 650 by
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default (0x6ce677), 300 where 0x63d280 holds for the hero's area (0x6ce6b5),
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350 when the weather object's 0x41ba40 is false (0x6ce6cf), plus a skill
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(0x355, 0x570d90) and equipment bonuses. Out of range only the debug flag
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0x182cdb8 & 2 shows them. The mod scales the three base values by 10 as well
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(about 120 tiles by day). The view only lists creatures of the sectors around
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the hero (25 entries at [esp+1ech]).
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