Fixes: Weapons and Environment: Revised radiation volume.

[Kitsune44]

Weapons & Environment: Revised gas and radiation volume effects.

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Description

Fixes the detection logic for radiation volumes.
Previously, the code only used the bounding box for trigger checks, ignoring the intended cylindrical effect.
This update correctly detects entities within the hemisphere inscribed in the box, whose flat base lies on the box's bottom face, ensuring that damage and effects are applied properly for all affected entities.
This update introduces proper detection of marines inside a cylinder inscribed in a cube, in accordance with the original developers’ intention, while leaving alien detection unchanged as a compromise.

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Affected Entities and Effects

• All entities using radiation volumes (asw_radiation_volume.cpp)
  • TG-05 Gas Grenades
  • Radioactive/Toxic barrel

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Testing / Verification

• Verified in-game that entities are correctly affected.