Working commit for ability rewrite.

code/__defines/gamemode.dm

@@ -33,31 +33,6 @@
 #define DEFAULT_TELECRYSTAL_AMOUNT 130
 #define IMPLANT_TELECRYSTAL_AMOUNT(x) (round(x * 0.49)) // If this cost is ever greater than half of DEFAULT_TELECRYSTAL_AMOUNT then it is possible to buy more TC than you spend
 
-// SPELL FLAGS
-#define Z2NOCAST        BITFLAG(0)  //if this is added, the spell can't be cast at centcomm
-#define INCLUDEUSER     BITFLAG(1)  //does the spell include the caster in its target selection?
-#define IGNOREDENSE     BITFLAG(2) //are dense turfs ignored in selection?
-
-//End split flags
-#define CONSTRUCT_CHECK BITFLAG(12) //used by construct spells - checks for nullrods
-#define NO_BUTTON       BITFLAG(13) //spell won't show up in the HUD with this
-
-//invocation
-#define SpI_SHOUT	"shout"
-#define SpI_WHISPER	"whisper"
-#define SpI_EMOTE	"emote"
-#define SpI_NONE	"none"
-
-//upgrading
-#define Sp_SPEED	"speed"
-#define Sp_POWER	"power"
-#define Sp_TOTAL	"total"
-
-//casting costs
-#define Sp_RECHARGE	"recharge"
-#define Sp_CHARGES	"charges"
-#define Sp_HOLDVAR	"holdervar"
-
 //Voting-related
 #define VOTE_PROCESS_ABORT    1
 #define VOTE_PROCESS_COMPLETE 2

code/datums/extensions/abilities/abilities.dm

@@ -54,3 +54,7 @@
 		for(var/datum/ability_handler/handler in ability_handlers)
 			handler.refresh_login()
 
+/datum/extension/abilities/proc/refresh_element_positioning()
+	var/row = 0
+	for(var/datum/ability_handler/handler in ability_handlers)
+		row += handler.refresh_element_positioning(row)

code/datums/extensions/abilities/abilities_mob.dm

@@ -18,6 +18,7 @@
 		return FALSE
 	handler = new handler_type(abilities, src)
 	LAZYADD(abilities.ability_handlers, handler)
+	handler.finalize_ability_handler()
 	return handler
 
 /mob/proc/remove_ability_handler(handler_type)
@@ -31,3 +32,61 @@
 	if(!LAZYLEN(abilities.ability_handlers))
 		remove_extension(src, /datum/extension/abilities)
 	return TRUE
+
+/mob/living/proc/copy_abilities_from(mob/living/donor)
+	var/datum/extension/abilities/abilities = get_extension(src, /datum/extension/abilities)
+	if(!abilities)
+		return FALSE
+	. = FALSE
+	for(var/datum/ability_handler/handler in abilities.ability_handlers)
+		if(handler.copy_abilities_to(donor))
+			. = TRUE
+
+/mob/living/proc/disable_abilities(var/amount = 0)
+	if(amount < 0)
+		return
+	var/datum/extension/abilities/abilities = get_extension(src, /datum/extension/abilities)
+	for(var/datum/ability_handler/handler in abilities?.ability_handlers)
+		handler.disable_abilities(amount)
+
+/mob/living/proc/copy_abilities_to(mob/living/donor)
+	var/datum/extension/abilities/abilities = get_extension(src, /datum/extension/abilities)
+	for(var/datum/ability_handler/handler in abilities?.ability_handlers)
+		handler.copy_abilities_to(donor)
+
+/mob/proc/add_ability(ability_type, list/metadata)
+	var/decl/ability/ability = GET_DECL(ability_type)
+	if(!istype(ability) || !ability.associated_handler_type)
+		return FALSE
+	var/datum/ability_handler/handler = get_ability_handler(ability.associated_handler_type, create_if_missing = TRUE)
+	return handler.add_ability(ability_type, metadata)
+
+/mob/proc/remove_ability(ability_type)
+	var/decl/ability/ability = GET_DECL(ability_type)
+	if(!istype(ability) || !ability.associated_handler_type)
+		return FALSE
+	var/datum/extension/abilities/abilities = get_extension(src, /datum/extension/abilities)
+	var/datum/ability_handler/handler = locate(ability.associated_handler_type) in abilities?.ability_handlers
+	return handler?.remove_ability(ability_type)
+
+/mob/proc/get_ability_metadata(ability_type)
+	var/decl/ability/ability = GET_DECL(ability_type)
+	if(!istype(ability) || !ability.associated_handler_type)
+		return null
+	var/datum/extension/abilities/abilities = get_extension(src, /datum/extension/abilities)
+	var/datum/ability_handler/handler = locate(ability.associated_handler_type) in abilities?.ability_handlers
+	return handler?.get_metadata(ability_type, create_if_missing = TRUE)
+
+/mob/proc/has_ability(ability_type)
+	var/decl/ability/ability = GET_DECL(ability_type)
+	if(!istype(ability) || !ability.associated_handler_type)
+		return null
+	var/datum/extension/abilities/abilities = get_extension(src, /datum/extension/abilities)
+	var/datum/ability_handler/handler = locate(ability.associated_handler_type) in abilities?.ability_handlers
+	return handler?.provides_ability(ability_type)
+
+/mob/Stat()
+	if((. = ..()) && client)
+		var/datum/extension/abilities/abilities = get_extension(src, /datum/extension/abilities)
+		for(var/datum/ability_handler/handler in abilities?.ability_handlers)
+			handler.show_stat_string(src)