Xenowork Prep For Future (#6491)

* Xenowork, weeds walls and material blobs.

* More weeds

* XenoUpdoots

* Stop that, me.

code/modules/organs/organ.dm

@@ -14,6 +14,7 @@ var/list/organ_cache = list()
 	var/vital							// Lose a vital limb, die immediately.
 	var/damage = 0						// Current damage to the organ
 	var/robotic = 0
+	var/stapled_nerves = FALSE
 
 	// Reference data.
 	var/mob/living/carbon/human/owner	// Current mob owning the organ.
@@ -431,6 +432,8 @@ var/list/organ_cache = list()
 		return 0
 	if(robotic && robotic < ORGAN_LIFELIKE)	//Super fancy humanlike robotics probably have sensors, or something?
 		return 0
+	if(stapled_nerves)
+		return 0
 	return 1
 
 /obj/item/organ/proc/handle_organ_mod_special(var/removed = FALSE)	// Called when created, transplanted, and removed.

code/modules/organs/organ_external.dm

@@ -25,6 +25,7 @@
 	var/burn_dam = 0                   // Actual current burn damage.
 	var/last_dam = -1                  // used in healing/processing calculations.
 	var/spread_dam = 0
+	var/thick_skin = 0                 // If a needle has a chance to fail to penetrate.
 
 	// Appearance vars.
 	var/nonsolid                       // Snowflake warning, reee. Used for slime limbs.

code/modules/organs/subtypes/indestructible.dm

@@ -63,3 +63,9 @@
 	cannot_amputate = 1
 	cannot_break = 1
 	dislocated = -1
+
+/obj/item/organ/external/head/no_eyes/indestructible
+	cannot_gib = 1
+	cannot_amputate = 1
+	cannot_break = 1
+	dislocated = -1

code/modules/organs/subtypes/xenos.dm

@@ -137,3 +137,79 @@
 		if(ishuman(owner))
 			H = owner
 			color = H.species.blood_color
+
+
+// XENOMORPH EXTERNAL ORGANS
+
+/obj/item/organ/external/chest/unseverable/xeno
+	cannot_gib = 1
+	cannot_amputate = 1
+	thick_skin = TRUE
+
+/obj/item/organ/external/groin/unseverable/xeno
+	cannot_gib = 1
+	cannot_amputate = 1
+	encased = TRUE
+	thick_skin = TRUE
+
+/obj/item/organ/external/arm/unseverable/xeno
+	cannot_gib = 1
+	cannot_amputate = 1
+	stapled_nerves = TRUE
+	encased = TRUE
+	thick_skin = TRUE
+
+/obj/item/organ/external/arm/right/unseverable/xeno
+	cannot_gib = 1
+	cannot_amputate = 1
+	stapled_nerves = TRUE
+	encased = TRUE
+	thick_skin = TRUE
+
+/obj/item/organ/external/leg/unseverable/xeno
+	cannot_gib = 1
+	cannot_amputate = 1
+	stapled_nerves = TRUE
+	encased = TRUE
+	thick_skin = TRUE
+
+/obj/item/organ/external/leg/right/unseverable/xeno
+	cannot_gib = 1
+	cannot_amputate = 1
+	stapled_nerves = TRUE
+	encased = TRUE
+	thick_skin = TRUE
+
+/obj/item/organ/external/foot/unseverable/xeno
+	cannot_gib = 1
+	cannot_amputate = 1
+	stapled_nerves = TRUE
+	encased = TRUE
+	thick_skin = TRUE
+
+/obj/item/organ/external/foot/right/unseverable/xeno
+	cannot_gib = 1
+	cannot_amputate = 1
+	stapled_nerves = TRUE
+	encased = TRUE
+	thick_skin = TRUE
+
+/obj/item/organ/external/hand/unseverable/xeno
+	cannot_gib = 1
+	cannot_amputate = 1
+	stapled_nerves = TRUE
+	encased = TRUE
+	thick_skin = TRUE
+
+/obj/item/organ/external/hand/right/unseverable/xeno
+	cannot_gib = 1
+	cannot_amputate = 1
+	stapled_nerves = TRUE
+	encased = TRUE
+	thick_skin = TRUE
+
+/obj/item/organ/external/head/unseverable/xeno
+	cannot_gib = 1
+	cannot_amputate = 1
+	thick_skin = TRUE
+	eye_icon = "blank_eyes"