Adds Taur cocks (#2329)

* Added flared taur penises

FIRST STEP ONLY DO NOT PULL REQUEST THIS!!!!
The files are still messy and the penis is just another shape to choose
from right now for testing purposes!
Flipped the order of GENITALS_BEHIND_LAYER and BODY_BEHIND_LAYER, as
taurs need to be drawn on top of the genitalia, and I don't think
anything else uses this that would need genitals drawn on top of them.

* Adds More shapes

Adds Tapered and Knotted shapes to the Taur cocks.

* Fixes on-ground sprites

The OLD bug barbed knotted cocks being invisible when not inside a body
is fixed.
This fix solves why taur cocks were invisible when cut off or gibbed the
body.
This also removes the lowershape() workaround that was being used.
I'll get around a bigger refactor of other genitalia in another PR, as
the scope of this was just to add taur cocks to begin with...

code/__DEFINES/misc.dm

@@ -46,8 +46,8 @@ Will print: "/mob/living/carbon/human/death" (you can optionally embed it in a s
 //Human Overlays Indexes/////////
 //citadel code
 #define MUTATIONS_LAYER			30		//mutations. Tk headglows, cold resistance glow, etc
-#define BODY_BEHIND_LAYER		29		//certain mutantrace features (tail when looking south) that must appear behind the body parts
-#define GENITALS_BEHIND_LAYER	28
+#define GENITALS_BEHIND_LAYER	29		//Some genitalia needs to be behind everything, such as with taurs (Taurs use body_behind_layer
+#define BODY_BEHIND_LAYER		28		//certain mutantrace features (tail when looking south) that must appear behind the body parts
 #define BODYPARTS_LAYER			27		//Initially "AUGMENTS", this was repurposed to be a catch-all bodyparts flag
 #define BODY_ADJ_LAYER			26		//certain mutantrace features (snout, body markings) that must appear above the body parts
 #define GENITALS_ADJ_LAYER		25

code/__HELPERS/global_lists.dm

@@ -48,6 +48,11 @@
 	init_sprite_accessory_subtypes(/datum/sprite_accessory/xeno_dorsal, GLOB.xeno_dorsal_list)
 	//genitals
 	init_sprite_accessory_subtypes(/datum/sprite_accessory/penis, GLOB.cock_shapes_list)
+
+	for(var/K in GLOB.cock_shapes_list)
+		var/datum/sprite_accessory/penis/value = GLOB.cock_shapes_list[K]
+		GLOB.cock_shapes_icons[K] = value.icon_state
+
 	init_sprite_accessory_subtypes(/datum/sprite_accessory/vagina, GLOB.vagina_shapes_list)
 	init_sprite_accessory_subtypes(/datum/sprite_accessory/breasts, GLOB.breasts_shapes_list)
 	GLOB.breasts_size_list = list("a","b","c","d","e") //We need the list to choose from initialized, but it's no longer a sprite_accessory thing.

code/citadel/_cit_helpers.dm

@@ -53,6 +53,7 @@ GLOBAL_LIST_EMPTY(xeno_dorsal_list)
 
 	//Genitals and Arousal Lists
 GLOBAL_LIST_EMPTY(cock_shapes_list)//global_lists.dm for the list initializations //Now also _DATASTRUCTURES globals.dm
+GLOBAL_LIST_EMPTY(cock_shapes_icons) //Associated list for names->icon_states for cockshapes.
 GLOBAL_LIST_EMPTY(breasts_size_list)
 GLOBAL_LIST_EMPTY(breasts_shapes_list)
 GLOBAL_LIST_EMPTY(vagina_shapes_list)

code/citadel/organs/genitals.dm

@@ -243,8 +243,10 @@
 				G.aroused_state = FALSE
 			icon_string = "[G.slot]_[S.icon_state]_[size]_[G.aroused_state]_[layertext]"
 			I = image("icon" = S.icon, "icon_state" = icon_string, "layer" =- layer)
+
 			if(S.center)
 				I = center_image(I,S.dimension_x,S.dimension_y)
+
 			if(use_skintones && H.dna.features["genitals_use_skintone"])
 				I.color = "#[skintone2hex(H.skin_tone)]"
 			else

code/citadel/organs/genitals_sprite_accessories.dm

@@ -31,6 +31,33 @@
 	icon_state = "tapered"
 	name = "Tapered"
 
+////////////////////////
+// Taur cocks go here //
+////////////////////////
+/datum/sprite_accessory/penis/taur_flared
+	icon = 'code/citadel/icons/taur_penis_onmob.dmi' //Needed larger width
+	icon_state = "flared"
+	name = "Taur, Flared"
+	center = TRUE //Center the image 'cause 2-tile wide.
+	dimension_x = 64
+
+/datum/sprite_accessory/penis/taur_knotted
+	icon = 'code/citadel/icons/taur_penis_onmob.dmi' //Needed larger width
+	icon_state = "knotted"
+	name = "Taur, Knotted"
+	center = TRUE //Center the image 'cause 2-tile wide.
+	dimension_x = 64
+
+/datum/sprite_accessory/penis/taur_tapered
+	icon = 'code/citadel/icons/taur_penis_onmob.dmi' //Needed larger width
+	icon_state = "tapered"
+	name = "Taur, Tapered"
+	center = TRUE //Center the image 'cause 2-tile wide.
+	dimension_x = 64
+
+
+
+
 //Vaginas
 /datum/sprite_accessory/vagina
 	icon = 'code/citadel/icons/vagina_onmob.dmi'

code/citadel/organs/penis.dm

@@ -35,7 +35,7 @@
 	cached_length = length
 
 /obj/item/organ/genital/penis/update_appearance()
-	var/string = "penis_[lowertext(shape)]_[size]"
+	var/string = "penis_[GLOB.cock_shapes_icons[shape]]_[size]"
 	icon_state = sanitize_text(string)
 	var/lowershape = lowertext(shape)
 	if(lowershape in knotted_types)