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9eb14dea90
* Fixes mutable appearance usage * Remove commented code --------- Co-authored-by: adrermail@gmail.com <adrermail@gmail.com>
80 lines
2.9 KiB
Plaintext
80 lines
2.9 KiB
Plaintext
/**
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* Apply to an action to allow it to take an item
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* and apply it as an overlay of the action button
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*/
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/datum/component/action_item_overlay
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/// UID of the item the component uses to apply as an overlay.
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var/item_uid
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/// Callback that dictates what item the component uses to apply as an overlay.
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var/datum/callback/item_callback
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/// The appearance of the item we've applied
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var/mutable_appearance/item_appearance
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/datum/component/action_item_overlay/Initialize(atom/movable/item, datum/callback/item_callback)
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if(!istype(parent, /datum/action))
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return COMPONENT_INCOMPATIBLE
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if(item && !istype(item))
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stack_trace("[type] created with a non-null, non-movable item; item must be null or movable")
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return COMPONENT_INCOMPATIBLE
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if(!item && !item_callback)
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stack_trace("[type] created without a reference item or an item callback - one or the other is required.")
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return COMPONENT_INCOMPATIBLE
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src.item_uid = item.UID()
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src.item_callback = item_callback
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/datum/component/action_item_overlay/Destroy(force)
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item_uid = null
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item_callback = null
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item_appearance = null
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return ..()
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/datum/component/action_item_overlay/RegisterWithParent()
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RegisterSignal(parent, COMSIG_ACTION_OVERLAY_APPLY, PROC_REF(on_overlays_applied))
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var/datum/action/parent_action = parent
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parent_action.build_all_button_icons(UPDATE_BUTTON_OVERLAY)
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/datum/component/action_item_overlay/UnregisterFromParent()
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UnregisterSignal(parent, COMSIG_ACTION_OVERLAY_APPLY)
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// If we're being unregistered / deleted but our parent is sticking around,
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// force an overlay update to get rid of our item appearance
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if(!QDELING(parent))
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var/datum/action/parent_action = parent
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parent_action.build_all_button_icons(UPDATE_BUTTON_OVERLAY)
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/// Signal proc for [COMSIG_ACTION_OVERLAY_APPLY], applies the item appearance if possible.
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/datum/component/action_item_overlay/proc/on_overlays_applied(datum/action/source, atom/movable/screen/movable/action_button/current_button, force)
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SIGNAL_HANDLER
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// We're in the middle of being removed / deleted, remove our associated overlay
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if(QDELING(src))
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if(item_appearance)
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current_button.cut_overlay(item_appearance)
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item_appearance = null
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return
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var/atom/movable/muse = item_callback?.Invoke() || locateUID(item_uid)
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if(!istype(muse))
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if(item_appearance) // New item does not exist but we have an old appearance
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current_button.cut_overlay(item_appearance)
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item_appearance = null
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return
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if(item_appearance)
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// For caching purposes, we will try not to update if we don't need to
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if(!force && item_appearance.icon == muse.icon && item_appearance.icon_state == muse.icon_state)
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return
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current_button.cut_overlay(item_appearance)
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var/mutable_appearance/muse_appearance = mutable_appearance(muse.icon, muse.icon_state, FLOAT_LAYER, FLOAT_PLANE)
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muse_appearance.pixel_x = 0
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muse_appearance.pixel_y = 0
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current_button.add_overlay(muse_appearance)
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item_appearance = muse_appearance
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