porting hair gradient (wip)

it doesn't actually seem to work at all, will continue later

code/modules/mob/dead/new_player/sprite_accessories/hair_head.dm

@@ -833,6 +833,61 @@
 	icon_state = "hair_tailhair2"
 	ckeys_allowed = list("quotefox")
 
+/datum/sprite_accessory/hair_gradient
+	icon = 'icons/mob/hair_gradients.dmi'
+
+/datum/sprite_accessory/hair_gradient/none
+	name = "None"
+	icon_state = "none"
+
+/datum/sprite_accessory/hair_gradient/fadeup
+	name = "Fade Up"
+	icon_state = "fadeup"
+
+/datum/sprite_accessory/hair_gradient/fadedown
+	name = "Fade Down"
+	icon_state = "fadedown"
+
+/datum/sprite_accessory/hair_gradient/vertical_split
+	name = "Vertical Split"
+	icon_state = "vsplit"
+
+/datum/sprite_accessory/hair_gradient/_split
+	name = "Horizontal Split"
+	icon_state = "bottomflat"
+
+/datum/sprite_accessory/hair_gradient/reflected
+	name = "Reflected"
+	icon_state = "reflected_high"
+
+/datum/sprite_accessory/hair_gradient/reflected_inverse
+	name = "Reflected Inverse"
+	icon_state = "reflected_inverse_high"
+
+/datum/sprite_accessory/hair_gradient/wavy
+	name = "Wavy"
+	icon_state = "wavy"
+
+/datum/sprite_accessory/hair_gradient/long_fade_up
+	name = "Long Fade Up"
+	icon_state = "long_fade_up"
+
+/datum/sprite_accessory/hair_gradient/long_fade_down
+	name = "Long Fade Down"
+	icon_state = "long_fade_down"
+
+/datum/sprite_accessory/hair_gradient/short_fade_up
+	name = "Short Fade Up"
+	icon_state = "short_fade_up"
+
+/datum/sprite_accessory/hair_gradient/short_fade_down
+	name = "Short Fade Down"
+	icon_state = "short_fade_down"
+
+/datum/sprite_accessory/hair_gradient/wavy_spike
+	name = "Spiked Wavy"
+	icon_state = "wavy_spiked"
+
 
 
 //Pod-people hairs

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

@@ -10,6 +10,14 @@
 	var/hair_color = "000"
 	var/hair_style = "Bald"
 
+
+	///Colour used for the hair gradient.
+	var/grad_color = "000"
+	///Style used for the hair gradient.
+	var/grad_style
+
+
+
 	//Facial hair colour and style
 	var/facial_hair_color = "000"
 	var/facial_hair_style = "Shaved"
@@ -74,4 +82,4 @@
 	var/last_fire_update
 	var/account_id
 	can_be_held = "micro"
-	appearance_flags = KEEP_TOGETHER|TILE_BOUND|PIXEL_SCALE|LONG_GLIDE
+	appearance_flags = KEEP_TOGETHER|TILE_BOUND|PIXEL_SCALE|LONG_GLIDE

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

@@ -16,6 +16,11 @@ GLOBAL_LIST_EMPTY(roundstart_races)
 	var/hair_alpha = 255	// the alpha used by the hair. 255 is completely solid, 0 is transparent.
 	var/wing_color
 
+	///The gradient style used for the mob's hair.
+	var/grad_style
+	///The gradient color used to color the gradient.
+	var/grad_color
+
 	var/use_skintones = 0	// does it use skintones or not? (spoiler alert this is only used by humans)
 	var/exotic_blood = ""	// If your race wants to bleed something other than bog standard blood, change this to reagent id.
 	var/exotic_bloodtype = "" //If your race uses a non standard bloodtype (A+, O-, AB-, etc)
@@ -426,6 +431,7 @@ GLOBAL_LIST_EMPTY(roundstart_races)
 
 	if(!hair_hidden || dynamic_hair_suffix)
 		var/mutable_appearance/hair_overlay = mutable_appearance(layer = -HAIR_LAYER)
+		var/mutable_appearance/gradient_overlay = mutable_appearance(layer = -HAIR_LAYER)
 		if(!hair_hidden && !H.getorgan(/obj/item/organ/brain)) //Applies the debrained overlay if there is no brain
 			if(!(NOBLOOD in species_traits))
 				hair_overlay.icon = 'icons/mob/human_face.dmi'
@@ -461,6 +467,20 @@ GLOBAL_LIST_EMPTY(roundstart_races)
 							hair_overlay.color = "#" + hair_color
 					else
 						hair_overlay.color = "#" + H.hair_color
+
+
+					//Gradients
+					grad_style = H.grad_style
+					grad_color = H.grad_color
+					if(grad_style)
+						var/datum/sprite_accessory/gradient = GLOB.hair_gradients_list[grad_style]
+						var/icon/temp = icon(gradient.icon, gradient.icon_state)
+						var/icon/temp_hair = icon(hair_file, hair_state)
+						temp.Blend(temp_hair, ICON_ADD)
+						gradient_overlay.icon = temp
+						gradient_overlay.color = "#" + grad_color
+
+
 				else
 					hair_overlay.color = forced_colour
 				hair_overlay.alpha = hair_alpha
@@ -469,6 +489,8 @@ GLOBAL_LIST_EMPTY(roundstart_races)
 					hair_overlay.pixel_y += H.dna.species.offset_features[OFFSET_FACE][2]
 		if(hair_overlay.icon)
 			standing += hair_overlay
+			standing += gradient_overlay
+
 
 	if(standing.len)
 		H.overlays_standing[HAIR_LAYER] = standing