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https://github.com/Citadel-Station-13/Citadel-Station-13.git
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ariaworld
94 lines
3.5 KiB
Plaintext
94 lines
3.5 KiB
Plaintext
/datum/element/decal
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element_flags = ELEMENT_BESPOKE|ELEMENT_DETACH
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id_arg_index = 2
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var/cleanable
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var/description
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var/mutable_appearance/pic
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/**
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* A short lecture on decal element collision on rotation
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* If a given decal's rotated version is identical to one of existing (at a same target), pre-rotation decals,
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* then the rotated decal won't stay after when the colliding pre-rotation decal gets rotated,
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* resulting in some decal elements colliding into nonexistence. This internal tick-tock prevents
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* such collision by forcing a non-collision.
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*/
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var/rotated
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/datum/element/decal/Attach(atom/target, _icon, _icon_state, _dir, _cleanable=CLEAN_GOD, _color, _layer=TURF_LAYER, _description, _alpha=255, _rotated=FALSE)
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. = ..()
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if(!isatom(target) || (pic ? FALSE : !generate_appearance(_icon, _icon_state, _dir, _layer, _color, _alpha, target)))
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return ELEMENT_INCOMPATIBLE
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description = _description
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cleanable = _cleanable
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rotated = _rotated
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RegisterSignal(target,COMSIG_ATOM_UPDATE_OVERLAYS, PROC_REF(apply_overlay), TRUE)
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if(isturf(target))
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RegisterSignal(target,COMSIG_TURF_AFTER_SHUTTLE_MOVE, PROC_REF(shuttlemove_react), TRUE)
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if(target.flags_1 & INITIALIZED_1)
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target.update_icon() //could use some queuing here now maybe.
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else
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RegisterSignal(target,COMSIG_ATOM_AFTER_SUCCESSFUL_INITIALIZE,PROC_REF(late_update_icon), TRUE)
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if(isitem(target))
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INVOKE_ASYNC(target, TYPE_PROC_REF(/obj/item, update_slot_icon), TRUE)
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if(_dir)
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RegisterSignal(target, COMSIG_ATOM_DIR_CHANGE, PROC_REF(rotate_react),TRUE)
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if(_cleanable)
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RegisterSignal(target, COMSIG_COMPONENT_CLEAN_ACT, PROC_REF(clean_react),TRUE)
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if(_description)
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RegisterSignal(target, COMSIG_PARENT_EXAMINE, PROC_REF(examine),TRUE)
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/datum/element/decal/proc/generate_appearance(_icon, _icon_state, _dir, _layer, _color, _alpha, source)
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if(!_icon || !_icon_state)
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return FALSE
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var/temp_image = image(_icon, null, _icon_state, _layer, _dir)
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pic = new(temp_image)
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pic.color = _color
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pic.alpha = _alpha
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return TRUE
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/datum/element/decal/Detach(atom/source, force)
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UnregisterSignal(source, list(COMSIG_ATOM_DIR_CHANGE, COMSIG_COMPONENT_CLEAN_ACT, COMSIG_PARENT_EXAMINE, COMSIG_ATOM_UPDATE_OVERLAYS,COMSIG_TURF_AFTER_SHUTTLE_MOVE))
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source.update_icon()
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if(isitem(source))
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INVOKE_ASYNC(source, TYPE_PROC_REF(/obj/item, update_slot_icon))
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return ..()
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/datum/element/decal/proc/late_update_icon(atom/source)
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SIGNAL_HANDLER
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if(source && istype(source))
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source.update_icon()
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UnregisterSignal(source,COMSIG_ATOM_AFTER_SUCCESSFUL_INITIALIZE)
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/datum/element/decal/proc/apply_overlay(atom/source, list/overlay_list)
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SIGNAL_HANDLER
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overlay_list += pic
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/datum/element/decal/proc/shuttlemove_react(datum/source, turf/newT)
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SIGNAL_HANDLER
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Detach(source)
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newT.AddElement(/datum/element/decal, pic.icon, pic.icon_state, pic.dir, cleanable, pic.color, pic.layer, description, pic.alpha, rotated)
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/datum/element/decal/proc/rotate_react(datum/source, old_dir, new_dir)
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SIGNAL_HANDLER
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if(old_dir == new_dir)
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return
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Detach(source)
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source.AddElement(/datum/element/decal, pic.icon, pic.icon_state, angle2dir(dir2angle(pic.dir)+dir2angle(new_dir)-dir2angle(old_dir)), cleanable, pic.color, pic.layer, description, pic.alpha, !rotated)
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/datum/element/decal/proc/clean_react(datum/source, strength)
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SIGNAL_HANDLER
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if(strength >= cleanable)
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Detach(source)
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return TRUE
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return NONE
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/datum/element/decal/proc/examine(datum/source, mob/user, list/examine_list)
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SIGNAL_HANDLER
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examine_list += description
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