Ghost-role arousal fix (#283)

* Ghost-role arousal fix

Fixes it so ghost role spawners respect arousal preferences of the
ghost.

* Arousal should respect species traits

This is *currently* having no effect, as no species at the time of
writing uses NOGENITALS species trait. But good for future species I
think.

* Arousal-fix-fixed

Made on_species_gain do the arousal check and apply it properly. Moved
equip to happen AFTER the ckey is assigned, as I couldn't check the
clients prefs before that and it just defaulted to TRUE.
Problem: Human ghost-roles are already human and would not use
on_species_gain. I had 2 fixes for this: Either I made them do so
anyway, doing set_species with human. This is probably redundant and
might break things in some unexpected way....
2nd possible fix is what I am pushing now, just making an else statement
for that situation.

code/modules/awaymissions/corpse.dm

@@ -67,7 +67,6 @@
 
 	M.adjustOxyLoss(oxy_damage)
 	M.adjustBruteLoss(brute_damage)
-	equip(M)
 
 	if(ckey)
 		M.ckey = ckey
@@ -78,6 +77,7 @@
 				MM.objectives += new/datum/objective(objective)
 		special(M)
 		MM.name = M.real_name
+	equip(M)
 	if(uses > 0)
 		uses--
 	if(!permanent && !uses)
@@ -115,6 +115,12 @@
 /obj/effect/mob_spawn/human/equip(mob/living/carbon/human/H)
 	if(mob_species)
 		H.set_species(mob_species)
+	else
+		//If we're a human, we still need to handle our snowflake code anyway I guess.
+		if (NOAROUSAL in H.dna.species.species_traits)
+			H.canbearoused = FALSE
+		else
+			H.canbearoused = H.client.prefs.arousable
 	if(husk)
 		H.Drain()
 

code/modules/mob/living/carbon/human/species.dm

@@ -159,6 +159,10 @@
 		species_traits += DIGITIGRADE
 	if(DIGITIGRADE in species_traits)
 		C.Digitigrade_Leg_Swap(FALSE)
+	if(NOAROUSAL in species_traits)
+		C.canbearoused = FALSE
+	else
+		C.canbearoused = C.client.prefs.arousable
 
 /datum/species/proc/on_species_loss(mob/living/carbon/C)
 	if(C.dna.species.exotic_bloodtype)