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https://github.com/CHOMPStation2/CHOMPStation2.git
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143 lines
4.5 KiB
Plaintext
143 lines
4.5 KiB
Plaintext
/turf
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///Lumcount added by sources other than lighting datum objects, such as the overlay lighting component.
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var/dynamic_lumcount = 0
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var/dynamic_lighting = TRUE
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var/tmp/lighting_corners_initialised = FALSE
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///Our lighting object.
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var/tmp/datum/lighting_object/lighting_object
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///Lighting Corner datums.
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var/tmp/datum/lighting_corner/lighting_corner_NE
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var/tmp/datum/lighting_corner/lighting_corner_SE
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var/tmp/datum/lighting_corner/lighting_corner_SW
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var/tmp/datum/lighting_corner/lighting_corner_NW
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///Which directions does this turf block the vision of, taking into account both the turf's opacity and the movable opacity_sources.
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var/directional_opacity = NONE
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///Lazylist of movable atoms providing opacity sources.
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var/list/atom/movable/opacity_sources
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// Causes any affecting light sources to be queued for a visibility update, for example a door got opened.
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/turf/proc/reconsider_lights()
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lighting_corner_NE?.vis_update()
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lighting_corner_SE?.vis_update()
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lighting_corner_SW?.vis_update()
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lighting_corner_NW?.vis_update()
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/turf/proc/lighting_clear_overlay()
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if(lighting_object)
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qdel(lighting_object, force=TRUE)
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// Builds a lighting object for us, but only if our area is dynamic.
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/turf/proc/lighting_build_overlay()
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if(!has_dynamic_lighting())
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return
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lighting_clear_overlay()
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new/datum/lighting_object(src)
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// Used to get a scaled lumcount.
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/turf/proc/get_lumcount(minlum = 0, maxlum = 1)
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if (!lighting_object)
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return 1
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var/totallums = 0
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var/datum/lighting_corner/L
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L = lighting_corner_NE
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if (L)
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totallums += L.lum_r + L.lum_b + L.lum_g
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L = lighting_corner_SE
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if (L)
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totallums += L.lum_r + L.lum_b + L.lum_g
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L = lighting_corner_SW
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if (L)
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totallums += L.lum_r + L.lum_b + L.lum_g
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L = lighting_corner_NW
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if (L)
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totallums += L.lum_r + L.lum_b + L.lum_g
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totallums /= 12 // 4 corners, each with 3 channels, get the average.
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totallums = (totallums - minlum) / (maxlum - minlum)
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totallums += dynamic_lumcount
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return CLAMP01(totallums)
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// Returns a boolean whether the turf is on soft lighting.
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// Soft lighting being the threshold at which point the overlay considers
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// itself as too dark to allow sight and see_in_dark becomes useful.
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// So basically if this returns true the tile is unlit black.
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/turf/proc/is_softly_lit()
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if (!lighting_object)
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return FALSE
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return !(luminosity || dynamic_lumcount)
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///Proc to add movable sources of opacity on the turf and let it handle lighting code.
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/turf/proc/add_opacity_source(atom/movable/new_source)
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LAZYADD(opacity_sources, new_source)
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if(opacity)
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return
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recalculate_directional_opacity()
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///Proc to remove movable sources of opacity on the turf and let it handle lighting code.
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/turf/proc/remove_opacity_source(atom/movable/old_source)
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LAZYREMOVE(opacity_sources, old_source)
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if(opacity) //Still opaque, no need to worry on updating.
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return
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recalculate_directional_opacity()
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///Calculate on which directions this turfs block view.
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/turf/proc/recalculate_directional_opacity()
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. = directional_opacity
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if(opacity)
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directional_opacity = ALL_CARDINALS
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if(. != directional_opacity)
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reconsider_lights()
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return
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directional_opacity = NONE
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for(var/atom/movable/opacity_source as anything in opacity_sources)
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if(opacity_source.flags & ON_BORDER)
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directional_opacity |= opacity_source.dir
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else //If fulltile and opaque, then the whole tile blocks view, no need to continue checking.
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directional_opacity = ALL_CARDINALS
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break
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if(. != directional_opacity && (. == ALL_CARDINALS || directional_opacity == ALL_CARDINALS))
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reconsider_lights() //The lighting system only cares whether the tile is fully concealed from all directions or not.
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/turf/proc/change_area(area/old_area, area/new_area)
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if(SSlighting.subsystem_initialized)
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if (new_area.dynamic_lighting != old_area.dynamic_lighting)
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if (new_area.dynamic_lighting)
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lighting_build_overlay()
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else
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lighting_clear_overlay()
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/turf/proc/has_dynamic_lighting()
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var/area/A = loc
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return (IS_DYNAMIC_LIGHTING(src) && IS_DYNAMIC_LIGHTING(A))
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/turf/proc/generate_missing_corners()
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if (!lighting_corner_NE)
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lighting_corner_NE = new/datum/lighting_corner(src, NORTH|EAST)
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if (!lighting_corner_SE)
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lighting_corner_SE = new/datum/lighting_corner(src, SOUTH|EAST)
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if (!lighting_corner_SW)
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lighting_corner_SW = new/datum/lighting_corner(src, SOUTH|WEST)
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if (!lighting_corner_NW)
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lighting_corner_NW = new/datum/lighting_corner(src, NORTH|WEST)
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lighting_corners_initialised = TRUE
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