code/datums/components/field_of_vision.dm 
| /datum/component/field_of_vision | Field of Vision component. Does totally what you probably think it does, ergo preventing players from seeing what's behind them. |
|---|---|
| FOV_ANGLE_CHECK | Byond doc is not entirely correct on the integrated arctan() proc. When both x and y are negative, the output is also negative, cycling clockwise instead of counter-clockwise. That's also why I am extensively using the SIMPLIFY_DEGREES macro here. |
| /atom/movable/fov_holder | The shadow cone's mask and visual images holder which can't locate inside the mob, lest they inherit the mob opacity and cause a lot of hindrance |
Define Details
FOV_ANGLE_CHECK
Byond doc is not entirely correct on the integrated arctan() proc. When both x and y are negative, the output is also negative, cycling clockwise instead of counter-clockwise. That's also why I am extensively using the SIMPLIFY_DEGREES macro here.
Overall this is the main macro that calculates wheter a target is within the shadow cone angle or not.