code/__HELPERS/lighting.dm 
| /proc/emissive_appearance | Produces a mutable appearance glued to the [EMISSIVE_PLANE] dyed to be the EMISSIVE_COLOR. |
|---|---|
| /proc/emissive_blocker | Produces a mutable appearance glued to the [EMISSIVE_PLANE] dyed to be the EM_BLOCK_COLOR. |
| /proc/partially_block_emissives | Takes a non area atom and a threshold Makes it block emissive with any pixels with more alpha then that threshold, with the rest allowing the light to pass Returns a list of objects, automatically added to your vis_contents, that apply this effect QDEL them when appropriate |