Merge pull request #2448 from tigercat2000/footsteps_are_good_iunno

Footstep sounds

code/modules/mob/living/carbon/alien/alien.dm

@@ -291,3 +291,30 @@ Des: Removes all infected images from the alien.
 #undef HEAT_DAMAGE_LEVEL_1
 #undef HEAT_DAMAGE_LEVEL_2
 #undef HEAT_DAMAGE_LEVEL_3
+
+/mob/living/carbon/alien/handle_footstep(turf/T)
+	if(..())
+		if(T.footstep_sounds["xeno"])
+			var/S = pick(T.footstep_sounds["xeno"])
+			if(S)
+				if(m_intent == "run")
+					if(!(step_count % 2)) //every other turf makes a sound
+						return 0
+
+				var/range = -(world.view - 2)
+				range -= 0.666 //-(7 - 2) = (-5) = -5 | -5 - (0.666) = -5.666 | (7 + -5.666) = 1.334 | 1.334 * 3 = 4.002 | range(4.002) = range(4)
+				var/volume = 5
+
+				if(m_intent == "walk")
+					return 0 //silent when walking
+
+				if(buckled || lying || throwing)
+					return 0 //people flying, lying down or sitting do not step
+
+				if(!has_gravity(src))
+					if(step_count % 3) //this basically says, every three moves make a noise
+						return 0       //1st - none, 1%3==1, 2nd - none, 2%3==2, 3rd - noise, 3%3==0
+
+				playsound(T, S, volume, 1, range)
+				return 1
+	return 0

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

@@ -95,4 +95,55 @@
 			if(!has_gravity(loc))
 				return
 			var/obj/item/clothing/shoes/S = shoes
-			S.step_action(src)
+			S.step_action(src)
+
+/mob/living/carbon/human/handle_footstep(turf/T)
+	if(..())
+		if(T.footstep_sounds["human"])
+			var/S = pick(T.footstep_sounds["human"])
+			if(S)
+				if(m_intent == "run")
+					if(!(step_count % 2)) //every other turf makes a sound
+						return 0
+
+				var/range = -(world.view - 2)
+				if(m_intent == "walk")
+					range -= 0.333
+				if(!shoes)
+					range -= 0.333
+
+				//shoes + running
+					//-(7 - 2) = -(5) = -5 | -5 - 0           = -5     | (7 + -5)     = 2     | 2     * 3 = 6     | range(6)     = range(6)
+				//running OR shoes
+					//-(7 - 2) = (-5) = -5 | -5 - 0.333       = -5.333 | (7 + -5.333) = 1.667 | 1.667 * 3 = 5.001 | range(5.001) = range(5)
+				//walking AND no shoes
+					//-(7 - 2) = (-5) = -5 | -5 - (0.333 * 2) = -5.666 | (7 + -5.666) = 1.334 | 1.334 * 3 = 4.002 | range(4.002) = range(4)
+
+				var/volume = 13
+				if(m_intent == "walk")
+					volume -= 4
+				if(!shoes)
+					volume -= 4
+
+				if(istype(shoes, /obj/item/clothing/shoes))
+					var/obj/item/clothing/shoes/shooess = shoes
+					if(shooess.silence_steps)
+						return 0 //silent
+
+				if(!has_organ("l_foot") && !has_organ("r_foot"))
+					return 0 //no feet no footsteps
+
+				if(buckled || lying || throwing)
+					return 0 //people flying, lying down or sitting do not step
+
+				if(!has_gravity(src))
+					if(step_count % 3) //this basically says, every three moves make a noise
+						return 0       //1st - none, 1%3==1, 2nd - none, 2%3==2, 3rd - noise, 3%3==0
+
+				if(species.silent_steps)
+					return 0 //species is silent
+
+				playsound(T, S, volume, 1, range)
+				return 1
+
+	return 0

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

@@ -23,6 +23,7 @@
 	var/unarmed                  //For empty hand harm-intent attack
 	var/unarmed_type = /datum/unarmed_attack
 	var/slowdown = 0              // Passive movement speed malus (or boost, if negative)
+	var/silent_steps = 0          // Stops step noises
 
 	var/breath_type = "oxygen"   // Non-oxygen gas breathed, if any.
 	var/poison_type = "plasma"   // Poisonous air.
@@ -591,4 +592,4 @@
 			else
 				H.bodytemp.icon_state = "temp0"
 
-	return 1
+	return 1

code/modules/mob/living/living.dm

@@ -481,10 +481,18 @@
 	if (s_active && !( s_active in contents ) && get_turf(s_active) != get_turf(src))	//check !( s_active in contents ) first so we hopefully don't have to call get_turf() so much.
 		s_active.close(src)
 
+	handle_footstep(loc)
+	step_count++
+
 	if(update_slimes)
 		for(var/mob/living/carbon/slime/M in view(1,src))
 			M.UpdateFeed(src)
 
+/mob/living/proc/handle_footstep(turf/T)
+	if(istype(T))
+		return 1
+	return 0
+
 /*//////////////////////
 	START RESIST PROCS
 *///////////////////////

code/modules/mob/living/living_defines.dm

@@ -51,4 +51,5 @@
 	var/list/icon/pipes_shown = list()
 	var/last_played_vent
 
-	var/list/datum/action/actions = list()
+	var/list/datum/action/actions = list()
+	var/step_count = 0