Skrell Blood Uses Copper, Not Iron (#5739)

Adds copper-based blood to Skrell. They will no longer restore blood from iron, but from copper. Hemocyanin != Hemoglobin. Prepare your copper supplements come Vampire rounds!

code/modules/reagents/Chemistry-Reagents/Chemistry-Reagents-Dispenser.dm

@@ -93,6 +93,10 @@
 	taste_description = "copper"
 	specific_heat = 1.148
 
+/datum/reagent/copper/affect_ingest(var/mob/living/carbon/M, var/alien, var/removed)
+	if (alien & IS_SKRELL)
+		M.add_chemical_effect(CE_BLOODRESTORE, 8 * removed)
+
 /datum/reagent/alcohol //Parent class for all alcoholic reagents, though this one shouldn't be used anywhere.
 	name = null	// This null name should prevent alcohol from being added to global lists.
 	id = "alcohol"
@@ -275,7 +279,8 @@
 	specific_heat = 1.181
 
 /datum/reagent/iron/affect_ingest(var/mob/living/carbon/M, var/alien, var/removed)
-	M.add_chemical_effect(CE_BLOODRESTORE, 8 * removed)
+	if (!(alien & IS_SKRELL))
+		M.add_chemical_effect(CE_BLOODRESTORE, 8 * removed)
 
 /datum/reagent/lithium
 	name = "Lithium"

html/changelogs/Conspiir-bloodloss.yml

@@ -0,0 +1,37 @@
+################################
+# 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
+#################################
+
+# Your name.  
+author: Conspiir
+
+# 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:
+  - tweak: "The blue-blooded Skrell now recover from bloodloss using copper, not iron."