Leg actuators for RIGs (#2421)

Preview: https://kama.skullnet.me/index.php/s/GsEdb7q733nO1LK

Okay. These modules allow you to fall from any height without taking damage. As long as your suit is powered and they're enabled, anyways. Secondly, they allow you to leap! Civilian grade allow you to leap 4 tiles, military grade ones (syndicate + ERT commander) allow you to leap 7 tiles and to also grapple people (Vox leap feature).

On top of that, if you middle click on the tile you're on with them selected, you will try to leap upwards. If the tile you're facing above you is a solid (non-open turf, but not dense either), then you will start to climb onto that tile. Civilian grade model isn't powerful enough to jump you there fully, so you gotta spend 4 seconds grappling for your life. Get interrupted in that time, you fall. Military grade models hop you instantly.

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

@@ -49,7 +49,7 @@
 		if ((O.client && !( O.blinded )))
 			O.show_message(text("<span class='danger'>[] [failed ? "tried to tackle" : "has tackled"] down []!</span>", src, T), 1)
 
-/mob/living/carbon/human/proc/leap()
+/mob/living/carbon/human/proc/leap(var/mob/living/T = null, var/max_range = 4)
 	set category = "Abilities"
 	set name = "Leap"
 	set desc = "Leap at a target and grab them aggressively."
@@ -61,17 +61,18 @@
 		src << "You cannot leap in your current state."
 		return
 
-	var/list/choices = list()
-	for(var/mob/living/M in view(6,src))
-		if(!istype(M,/mob/living/silicon))
-			choices += M
-	choices -= src
+	if (!T)
+		var/list/choices = list()
+		for(var/mob/living/M in view(6,src))
+			if(!istype(M,/mob/living/silicon))
+				choices += M
+		choices -= src
 
-	var/mob/living/T = input(src,"Who do you wish to leap at?") as null|anything in choices
+		T = input(src,"Who do you wish to leap at?") as null|anything in choices
 
 	if(!T || !src || src.stat) return
 
-	if(get_dist(get_turf(T), get_turf(src)) > 4) return
+	if(get_dist(get_turf(T), get_turf(src)) > max_range) return
 
 	if(last_special > world.time)
 		return
@@ -85,7 +86,10 @@
 
 	src.visible_message("<span class='danger'>\The [src] leaps at [T]!</span>")
 	src.throw_at(get_step(get_turf(T),get_turf(src)), 4, 1, src)
-	playsound(src.loc, 'sound/voice/shriek1.ogg', 50, 1)
+
+	// Only Vox get to shriek. Seriously.
+	if (isvox(src))
+		playsound(src.loc, 'sound/voice/shriek1.ogg', 50, 1)
 
 	sleep(5)