Xeno caste picks are now tracked in the DB (cmss13-devs#8261)

# About the pull request

Tracks all evolved-into castes in the DB

# Explain why it's good for the game

Additional stat tracking is good, i'm cooking things


# Testing Photographs and Procedure

(T0/Hellhound/King no longer show up)


![image](https://github.com/user-attachments/assets/2a8d8758-66e0-4f3d-aaf6-131262801fc4)

code/datums/statistics/entities/round_caste_picks.dm

@@ -0,0 +1,51 @@
+/datum/entity/round_caste_picks
+	/// Round ID that we're storing data on
+	var/round_id
+	/// Dict of "castename" : amount picked
+	var/list/castes_picked
+
+/datum/entity/round_caste_picks/New()
+	. = ..()
+	round_id = GLOB.round_id || -1
+
+/datum/entity/round_caste_picks/assign_values(list/values, list/ignore = list())
+	for(var/field in metadata.field_types)
+		if(ignore.Find(field))
+			continue
+		if(field == "round_id")
+			vars[field] = values[field]
+		else
+			castes_picked[field] = values[field]
+
+/datum/entity_meta/round_caste_picks
+	entity_type = /datum/entity/round_caste_picks
+	table_name = "round_caste_picks"
+	field_types = list(
+		"round_id" = DB_FIELDTYPE_INT,
+	)
+
+/datum/entity_meta/round_caste_picks/New()
+	. = ..()
+	for(var/caste_name in (ALL_XENO_CASTES - XENO_T0_CASTES - XENO_CASTE_HELLHOUND - XENO_CASTE_KING))
+		field_types[lowertext(replacetext(caste_name, " ", "_"))] = DB_FIELDTYPE_INT
+
+/datum/entity_meta/round_caste_picks/map(datum/entity/round_caste_picks/entity, list/values)
+	var/strid = "[values[DB_DEFAULT_ID_FIELD]]"
+	entity.id = strid
+	for(var/field in field_types)
+		if(field == "round_id")
+			entity.vars[field] = values[field]
+		else
+			entity.castes_picked[field] = values[field]
+
+/datum/entity_meta/round_caste_picks/unmap(datum/entity/round_caste_picks/entity, include_id = TRUE)
+	var/list/values = list()
+	if(include_id)
+		values[DB_DEFAULT_ID_FIELD] = entity.id
+	for(var/field in field_types)
+		if(field == "round_id")
+			values[field] = entity.vars[field]
+		else
+			values[field] = entity.castes_picked[field]
+
+	return values

code/datums/statistics/entities/round_stats.dm

@@ -28,6 +28,8 @@
 
 	var/list/abilities_used = list() // types of /datum/entity/statistic, "tail sweep" = 10, "screech" = 2
 
+	var/list/castes_evolved = list() // dict of any caste that has been evolved into, and how many times, "Ravager" = 5, "Warrior" = 2
+
 	var/list/participants = list() // types of /datum/entity/statistic, "[human.faction]" = 10, "xeno" = 2
 	var/list/final_participants = list() // types of /datum/entity/statistic, "[human.faction]" = 0, "xeno" = 45
 	var/list/hijack_participants = list() // types of /datum/entity/statistic, "[human.faction]" = 0, "xeno" = 45
@@ -44,6 +46,7 @@
 	. = ..()
 	QDEL_NULL(current_map)
 	QDEL_LIST(death_stats_list)
+	QDEL_LIST_ASSOC_VAL(castes_evolved)
 	QDEL_LIST_ASSOC_VAL(abilities_used)
 	QDEL_LIST_ASSOC_VAL(final_participants)
 	QDEL_LIST_ASSOC_VAL(hijack_participants)
@@ -305,9 +308,17 @@
 		death_data["death_stats_list"] = new_death_list
 	track_dead_participant(new_death.faction_name)
 
+/datum/entity/statistic/round/proc/store_caste_evo_data()
+	var/datum/entity/round_caste_picks/caste_picks = SSentity_manager.tables[/datum/entity/round_caste_picks].make_new()
+	caste_picks.castes_picked = castes_evolved
+	caste_picks.save()
+
 /datum/entity/statistic/round/proc/log_round_statistics()
 	if(!GLOB.round_stats)
 		return
+
+	store_caste_evo_data()
+
 	var/total_xenos_created = 0
 	var/total_predators_spawned = 0
 	var/total_predaliens = 0

code/modules/mob/living/carbon/xenomorph/Evolution.dm

@@ -4,6 +4,9 @@
 //All castes need an evolves_to() list in their defines
 //Such as evolves_to = list(XENO_CASTE_WARRIOR, XENO_CASTE_SENTINEL, XENO_CASTE_RUNNER, "Badass") etc
 
+/// A list of ckeys that have been de-evolved willingly or forcefully
+GLOBAL_LIST_EMPTY(deevolved_ckeys)
+
 /mob/living/carbon/xenomorph/verb/Evolve()
 	set name = "Evolve"
 	set desc = "Evolve into a higher form."
@@ -198,8 +201,19 @@
 
 	if(new_xeno.mind && GLOB.round_statistics)
 		GLOB.round_statistics.track_new_participant(new_xeno.faction, -1) //so an evolved xeno doesn't count as two.
+
 	SSround_recording.recorder.track_player(new_xeno)
 
+	// We prevent de-evolved people from being tracked for the rest of the round relating to T1s in order to prevent people
+	// Intentionally de/re-evolving to mess with the stats gathered. We don't track t2/3 because it's a legit strategy to open
+	// With a t1 into drone before de-evoing later to go t1 into another caste once survs are dead/capped
+	if(new_xeno.ckey && !((new_xeno.caste.caste_type in XENO_T1_CASTES) && (new_xeno.ckey in GLOB.deevolved_ckeys)))
+		var/caste_cleaned_key = lowertext(replacetext(castepick, " ", "_"))
+		if(!SSticker.mode?.round_stats.castes_evolved[caste_cleaned_key])
+			SSticker.mode?.round_stats.castes_evolved[caste_cleaned_key] = 1
+		else
+			SSticker.mode?.round_stats.castes_evolved[caste_cleaned_key] += 1
+
 	SEND_SIGNAL(src, COMSIG_XENO_EVOLVE_TO_NEW_CASTE, new_xeno)
 
 /mob/living/carbon/xenomorph/proc/evolve_checks()
@@ -314,8 +328,8 @@
 	if(new_xeno)
 		log_game("EVOLVE: [key_name(src)] de-evolved into [new_xeno].")
 
-
-	return
+	if(new_xeno.ckey)
+		GLOB.deevolved_ckeys += new_xeno.ckey
 
 /mob/living/carbon/xenomorph/proc/transmute(newcaste)
 	// We have to delete the organ before creating the new xeno because all old_xeno contents are dropped to the ground on Initalize()

code/modules/mob/living/carbon/xenomorph/abilities/queen/queen_powers.dm

@@ -72,7 +72,8 @@
 		if(user_xeno.hive.living_xeno_queen && user_xeno.hive.living_xeno_queen.observed_xeno == target_xeno)
 			user_xeno.hive.living_xeno_queen.overwatch(new_xeno)
 
-	return
+		if(new_xeno.ckey)
+			GLOB.deevolved_ckeys += new_xeno.ckey
 
 /datum/action/xeno_action/onclick/remove_eggsac/use_ability(atom/A)
 	var/mob/living/carbon/xenomorph/queen/X = owner

colonialmarines.dme

@@ -675,6 +675,7 @@
 #include "code\datums\statistics\entities\player_entity.dm"
 #include "code\datums\statistics\entities\player_save.dm"
 #include "code\datums\statistics\entities\player_stats.dm"
+#include "code\datums\statistics\entities\round_caste_picks.dm"
 #include "code\datums\statistics\entities\round_stats.dm"
 #include "code\datums\statistics\entities\weapon_stats.dm"
 #include "code\datums\statistics\entities\xeno_stats.dm"