Makes it so nymphs from a gestalt that splits due to damage split injured (#8946)

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

@@ -301,7 +301,7 @@
 	else
 		nymph.key = key
 
-/mob/living/carbon/human/proc/diona_split_into_nymphs()
+/mob/living/carbon/human/proc/diona_split_into_nymphs(var/death_split = FALSE)
 	var/turf/T = get_turf(src)
 	var/mob/living/carbon/alien/diona/bestNymph = null
 	var/bestHealth = 0
@@ -336,6 +336,8 @@
 			bestNymph = D
 		nymphos += D
 		D.forceMove(T)
+		if(death_split && D.health != 0 && D.stat != DEAD)
+			D.health = D.maxHealth * 0.20
 		D.split_languages(src)
 		D.set_dir(pick(NORTH, SOUTH, EAST, WEST))
 		D.gestalt = null

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

@@ -160,7 +160,7 @@
 /datum/species/diona/handle_death(var/mob/living/carbon/human/H, var/gibbed = 0)
 	if (!gibbed)
 		// This proc sleeps. Async it.
-		INVOKE_ASYNC(H, /mob/living/carbon/human/proc/diona_split_into_nymphs)
+		INVOKE_ASYNC(H, /mob/living/carbon/human/proc/diona_split_into_nymphs, TRUE)
 
 /datum/species/diona/handle_speech_problems(mob/living/carbon/human/H, list/current_flags, message, message_verb, message_mode)
 // Diona without head can live, but they cannot talk as loud anymore.
@@ -182,4 +182,4 @@
 /datum/species/diona/handle_despawn(var/mob/living/carbon/human/H)
 	for(var/mob/living/carbon/alien/diona/D in H.contents)
 		if((!D.client && !D.mind) || D.stat == DEAD)
-			qdel(D)
+			qdel(D)

html/changelogs/nymphsplit.yml

@@ -0,0 +1,41 @@
+################################
+# Example Changelog File
+#
+# Note: This file, and files beginning with ".", and files that don't end in ".yml" will not be read. If you change this file, you will look really dumb.
+#
+# Your changelog will be merged with a master changelog. (New stuff added only, and only on the date entry for the day it was merged.)
+# When it is, any changes listed below will disappear.
+#
+# Valid Prefixes: 
+#   bugfix
+#   wip (For works in progress)
+#   tweak
+#   soundadd
+#   sounddel
+#   rscadd (general adding of nice things)
+#   rscdel (general deleting of nice things)
+#   imageadd
+#   imagedel
+#   maptweak
+#   spellcheck (typo fixes)
+#   experiment
+#   balance
+#   admin
+#   backend
+#   security
+#   refactor
+#################################
+
+# Your name.  
+author: Yonnimer
+
+# Optional: Remove this file after generating master changelog.  Useful for PR changelogs that won't get used again.
+delete-after: True
+
+# Any changes you've made.  See valid prefix list above.
+# INDENT WITH TWO SPACES.  NOT TABS.  SPACES.
+# SCREW THIS UP AND IT WON'T WORK.
+# Also, all entries are changed into a single [] after a master changelog generation. Just remove the brackets when you add new entries.
+# Please surround your changes in  double quotes ("), as certain characters otherwise screws up compiling. The quotes will not show up in the changelog.
+changes: 
+  - rscadd: "Makes it so if a Dionae deathsplits, their nymphs will start with only 20% of their max health."