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CHOMPStation2/code/modules/entopics_vr/alternate_appearance.dm

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/*
Alternate Appearances! By RemieRichards
A framework for replacing an atom (and it's overlays) with an override = 1 image, that's less shit!
Example uses:
* hallucinating all mobs looking like skeletons
* people wearing cardborg suits appearing as Standard Cyborgs to the other Silicons
* !!use your imagination!!
*/
//This datum is built on-the-fly by some of the procs below
//no need to instantiate it
/datum/alternate_appearance
var/key = ""
var/image/img
var/list/viewers = list()
var/atom/owner = null
/*
Displays the alternate_appearance
displayTo - a list of MOBS to show this appearance to
*/
/datum/alternate_appearance/proc/display_to(list/displayTo)
if(!displayTo || !displayTo.len)
return
for(var/m in displayTo)
var/mob/M = m
if(!M.viewing_alternate_appearances)
M.viewing_alternate_appearances = list()
viewers |= M
M.viewing_alternate_appearances |= src
if(M.client)
M.client.images |= img
/*
Hides the alternate_appearance
hideFrom - optional list of MOBS to hide it from the list's mobs specifically
*/
/datum/alternate_appearance/proc/hide(list/hideFrom)
var/list/hiding = viewers
if(hideFrom)
hiding = hideFrom
for(var/m in hiding)
var/mob/M = m
if(M.client)
M.client.images -= img
if(M.viewing_alternate_appearances && M.viewing_alternate_appearances.len)
M.viewing_alternate_appearances -= src
viewers -= M
/*
Removes the alternate_appearance from its owner's alternate_appearances list, hiding it also
*/
/datum/alternate_appearance/proc/remove()
hide()
if(owner && owner.alternate_appearances)
owner.alternate_appearances -= key
/datum/alternate_appearance/Destroy()
remove()
return ..()
/atom
var/list/alternate_appearances //the alternate appearances we own
var/list/viewing_alternate_appearances //the alternate appearances we're viewing, stored here to reestablish them after Logout()s
//these lists are built as necessary, so atoms aren't all lugging around empty lists
/*
Builds an alternate_appearance datum for the supplied args, optionally displaying it straight away
key - the key to the assoc list of key = /datum/alternate_appearances
img - the image file to be the "alternate appearance"
WORKS BEST IF:
* it has override = 1 set
* the image's loc is the atom that will use the appearance (otherwise... it's not exactly an alt appearance of this atom is it?)
displayTo - optional list of MOBS to display to immediately
Example:
var/image/I = image(icon = 'disguise.dmi', icon_state = "disguise", loc = src)
I.override = 1
add_alt_appearance("super_secret_disguise", I, players)
*/
/atom/proc/add_alt_appearance(key, img, list/displayTo = list())
if(!key || !img)
return
if(!alternate_appearances)
alternate_appearances = list()
var/datum/alternate_appearance/AA = new()
AA.img = img
AA.key = key
AA.owner = src
if(alternate_appearances[key])
qdel(alternate_appearances[key])
alternate_appearances[key] = AA
if(displayTo && displayTo.len)
display_alt_appearance(key, displayTo)
//////////////
// WRAPPERS //
//////////////
/*
Removes an alternate_appearance from src's alternate_appearances list
Wrapper for: alternate_appearance/remove()
key - the key to the assoc list of key = /datum/alternate_appearance
*/
/atom/proc/remove_alt_appearance(key)
if(alternate_appearances)
if(alternate_appearances[key])
qdel(alternate_appearances[key])
/*
Displays an alternate appearance from src's alternate_appearances list
Wrapper for: alternate_appearance/display_to()
key - the key to the assoc list of key = /datum/alternate_appearance
displayTo - a list of MOBS to show this appearance to
*/
/atom/proc/display_alt_appearance(key, list/displayTo)
if(!alternate_appearances || !key)
return
var/datum/alternate_appearance/AA = alternate_appearances[key]
if(!AA || !AA.img)
return
AA.display_to(displayTo)
/*
Hides an alternate appearance from src's alternate_appearances list
Wrapper for: alternate_appearance/hide()
key - the key to the assoc list of key = /datum/alternate_appearance
hideFrom - optional list of MOBS to hide it from the list's mobs specifically
*/
/atom/proc/hide_alt_appearance(key, list/hideFrom)
if(!alternate_appearances || !key)
return
var/datum/alternate_appearance/AA = alternate_appearances[key]
if(!AA)
return
AA.hide(hideFrom)