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implement-fog-of-war

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Implement, tune, debug, or validate soft wall-aware fog of war and gameplay perception in Three.js action games. Use for orthographic or isometric visibility masks, obstacle-aware line of sight, player and enemy vision ranges, hidden-enemy targeting rules, fog shader artifacts such as spokes or seams, mobile ray budgets, lifecycle and menu-state integration, and deterministic fog-of-war tests.

agent-skills/codex/implement-fog-of-war/SKILL.md

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Nov 8, 2026
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# Implement Fog of War

Build fog of war as a shared perception system with a restrained presentation layer.

## Preserve the architecture

Keep these responsibilities separate:

1. Let deterministic CPU perception own ranges, obstacle intersections, and gameplay visibility.
2. Encode the player's angular visible distances into one fixed-size lookup texture.
3. Let one full-screen shader turn that lookup into soft radial and wall-aware fog.
4. Let gameplay consume perception results directly; never infer combat truth from fog pixels.

Read [mechanics.md](references/mechanics.md) before implementing or changing the algorithm. It records the proven obstacle model, shader composition, calibrated values, state rules, enemy behavior, lighting constraints, and telemetry.
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