Add Skrell blood types

mods/species/skrell/_skrell.dme

@@ -2,6 +2,7 @@
 #define MODPACK_SKRELL
 #include "_skrell.dm"
 #include "datum/accessory.dm"
+#include "datum/blood.dm"
 #include "datum/culture.dm"
 #include "datum/descriptor.dm"
 #include "datum/emotes.dm"

mods/species/skrell/datum/blood.dm

@@ -0,0 +1,58 @@
+/decl/blood_type/skrell
+	abstract_type = /decl/blood_type/skrell
+	splatter_colour = "#1d2cbf"
+	antigens = list("Y", "Z", "Ph")
+
+/decl/blood_type/skrell/yplus
+	name = "Y+"
+	antigens = list("Y", "Ph")
+	random_weighting = 28
+
+/decl/blood_type/skrell/yminus
+	name = "Y-"
+	antigens = list("Y")
+	random_weighting = 3
+
+/decl/blood_type/skrell/zplus
+	name = "Z+"
+	antigens = list("Z", "Ph")
+	random_weighting = 20
+
+/decl/blood_type/skrell/zminus
+	name = "Z-"
+	antigens = list("Z")
+
+/decl/blood_type/skrell/yzplus
+	name = "YZ+"
+	antigens = list("Y", "Z", "Ph")
+	random_weighting = 5
+
+/decl/blood_type/skrell/yzminus
+	name = "YZ-"
+	antigens = list("Y", "Z")
+
+/decl/blood_type/skrell/noplus
+	name = "No+"
+	antigens = list("Ph")
+	random_weighting = 36
+
+/decl/blood_type/skrell/nominus
+	name = "No-"
+	random_weighting = 4
+
+/obj/item/chems/ivbag/blood/skrell_yplus
+	blood_type = "Y+"
+/obj/item/chems/ivbag/blood/skrell_yminus
+	blood_type = "Y-"
+/obj/item/chems/ivbag/blood/skrell_zplus
+	blood_type = "Z+"
+/obj/item/chems/ivbag/blood/skrell_zminus
+	blood_type = "Z-"
+/obj/item/chems/ivbag/blood/skrell_yzplus
+	blood_type = "YZ+"
+/obj/item/chems/ivbag/blood/skrell_yzminus
+	blood_type = "YZ-"
+/obj/item/chems/ivbag/blood/skrell_noplus
+	blood_type = "No+"
+/obj/item/chems/ivbag/blood/skrell_nominus
+	blood_type = "No-"

mods/species/skrell/datum/species.dm

@@ -48,10 +48,20 @@
 	appearance_flags = HAS_HAIR_COLOR | HAS_UNDERWEAR | HAS_SKIN_COLOR
 
 	flesh_color = "#8cd7a3"
-	blood_color = "#1d2cbf"
 	base_color = "#006666"
 	organs_icon = 'mods/species/skrell/icons/body/organs.dmi'
 
+	blood_types = list(
+		/decl/blood_type/skrell/yplus,
+		/decl/blood_type/skrell/yminus,
+		/decl/blood_type/skrell/zplus,
+		/decl/blood_type/skrell/zminus,
+		/decl/blood_type/skrell/yzplus,
+		/decl/blood_type/skrell/yzminus,
+		/decl/blood_type/skrell/noplus,
+		/decl/blood_type/skrell/nominus
+	)
+
 	cold_level_1 = 280 //Default 260 - Lower is better
 	cold_level_2 = 220 //Default 200
 	cold_level_3 = 130 //Default 120