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S.P.L.U.R.T-Station-13/code/datums/elements/turf_transparency.dm
Letter N 935e46b492 The Mapping Update
Cleans up the map (again)
Makes mining code more better
2021-03-12 12:11:35 +08:00

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/datum/element/turf_z_transparency
var/show_bottom_level = FALSE
///This proc sets up the signals to handle updating viscontents when turfs above/below update. Handle plane and layer here too so that they don't cover other obs/turfs in Dream Maker
/datum/element/turf_z_transparency/Attach(datum/target, show_bottom_level = TRUE)
. = ..()
if(!isturf(target))
return ELEMENT_INCOMPATIBLE
var/turf/our_turf = target
src.show_bottom_level = show_bottom_level
our_turf.plane = OPENSPACE_PLANE
our_turf.layer = OPENSPACE_LAYER
RegisterSignal(target, COMSIG_TURF_MULTIZ_DEL, .proc/on_multiz_turf_del)
RegisterSignal(target, COMSIG_TURF_MULTIZ_NEW, .proc/on_multiz_turf_new)
ADD_TRAIT(our_turf, TURF_Z_TRANSPARENT_TRAIT, TURF_TRAIT)
update_multiz(our_turf, TRUE, TRUE)
/datum/element/turf_z_transparency/Detach(datum/source, force)
. = ..()
var/turf/our_turf = source
our_turf.vis_contents.len = 0
REMOVE_TRAIT(our_turf, TURF_Z_TRANSPARENT_TRAIT, TURF_TRAIT)
///Updates the viscontents or underlays below this tile.
/datum/element/turf_z_transparency/proc/update_multiz(turf/our_turf, prune_on_fail = FALSE, init = FALSE)
var/turf/below_turf = our_turf.below()
if(!below_turf)
our_turf.vis_contents.len = 0
if(!show_bottom_level(our_turf) && prune_on_fail) //If we cant show whats below, and we prune on fail, change the turf to plating as a fallback
our_turf.ChangeTurf(/turf/open/floor/plating, flags = CHANGETURF_INHERIT_AIR)
return FALSE
if(init)
our_turf.vis_contents += below_turf
if(isclosedturf(our_turf)) //Show girders below closed turfs
var/mutable_appearance/girder_underlay = mutable_appearance('icons/obj/structures.dmi', "girder", layer = TURF_LAYER-0.01)
girder_underlay.appearance_flags = RESET_ALPHA | RESET_COLOR
our_turf.underlays += girder_underlay
var/mutable_appearance/plating_underlay = mutable_appearance('icons/turf/floors.dmi', "plating", layer = TURF_LAYER-0.02)
plating_underlay = RESET_ALPHA | RESET_COLOR
our_turf.underlays += plating_underlay
return TRUE
/datum/element/turf_z_transparency/proc/on_multiz_turf_del(turf/our_turf, turf/T, dir)
SIGNAL_HANDLER
if(dir != DOWN)
return
update_multiz(our_turf)
/datum/element/turf_z_transparency/proc/on_multiz_turf_new(turf/our_turf, turf/T, dir)
SIGNAL_HANDLER
if(dir != DOWN)
return
update_multiz(our_turf)
///Called when there is no real turf below this turf
/datum/element/turf_z_transparency/proc/show_bottom_level(turf/our_turf)
if(!show_bottom_level)
return FALSE
var/turf/path = SSmapping.level_trait(our_turf.z, ZTRAIT_BASETURF) || /turf/open/space
if(!ispath(path))
path = text2path(path)
if(!ispath(path))
warning("Z-level [our_turf.z] has invalid baseturf '[SSmapping.level_trait(our_turf.z, ZTRAIT_BASETURF)]'")
path = /turf/open/space
var/mutable_appearance/underlay_appearance = mutable_appearance(initial(path.icon), initial(path.icon_state), layer = TURF_LAYER-0.02, plane = PLANE_SPACE)
underlay_appearance.appearance_flags = RESET_ALPHA | RESET_COLOR
our_turf.underlays += underlay_appearance
return TRUE