Converts move intents to /decl/move_intent (#8993)

* Converts move intents to /decl/move_intent

Adds /decl/move_intent/walk and /decl/move_intent/run.

Switches all move intent checks to use the new IS_RUNNING and IS_WALKING macros.

Renames and refactors /mob/living/proc/set_m_intent() to /mob/living/proc/set_move_intent(decl/move_intent/intent).

Removes the unnecessary /mob/var/m_int and associated code.

Updates all move intent setters to use set_move_intent().

* Swaps incorrect config values

Swaps incorrect move delays since I got them backwards somehow, oopsies.

* Adds suggested ?. operator

Compactifies two if statements using the ?. operator instead.

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

@@ -37,10 +37,10 @@
 	. = ..()
 	if(src.nutrition && src.stat != 2)
 		adjust_nutrition(-DEFAULT_HUNGER_FACTOR / 10)
-		if(src.m_intent == "run")
+		if(IS_RUNNING(src))
 			adjust_nutrition(-DEFAULT_HUNGER_FACTOR / 10)
 
-	if((FAT in src.mutations) && src.m_intent == "run" && src.bodytemperature <= 360)
+	if((FAT in src.mutations) && IS_RUNNING(src) && src.bodytemperature <= 360)
 		src.bodytemperature += 2
 
 	// Moving around increases germ_level faster

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

@@ -67,7 +67,7 @@
 	..()
 	if(statpanel("Status"))
 		stat("Intent:", "[a_intent]")
-		stat("Move Mode:", "[m_intent]")
+		stat("Move Mode:", "[move_intent.name]")
 		if(emergency_shuttle)
 			var/eta_status = emergency_shuttle.get_status_panel_eta()
 			if(eta_status)

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

@@ -235,17 +235,17 @@
 	if(!S) return
 
 	// Play every 20 steps while walking, for the sneak
-	if(m_intent == "walk" && step_count++ % 20 != 0)
+	if(IS_WALKING(src) && step_count++ % 20 != 0)
 		return
 
 	// Play every other step while running
-	if(m_intent == "run" && step_count++ % 2 != 0)
+	if(IS_RUNNING(src) && step_count++ % 2 != 0)
 		return
 
 	var/volume = config.footstep_volume
 
 	// Reduce volume while walking or barefoot
-	if(!shoes || m_intent == "walk")
+	if(!shoes || IS_WALKING(src))
 		volume *= 0.5
 	else if(shoes)
 		var/obj/item/clothing/shoes/feet = shoes

code/modules/mob/living/living_movement.dm

@@ -16,7 +16,7 @@
 /mob/living/SelfMove(turf/n, direct, movetime)
 	// If on walk intent, don't willingly step into hazardous tiles.
 	// Unless the walker is confused.
-	if(m_intent == "walk" && confused <= 0)
+	if(IS_WALKING(src) && confused <= 0)
 		if(!n.is_safe_to_enter(src))
 			to_chat(src, span("warning", "\The [n] is dangerous to move into."))
 			return FALSE // In case any code wants to know if movement happened.
@@ -127,7 +127,7 @@ default behaviour is:
 	now_pushing = 0
 	. = ..()
 	if (!istype(AM, /atom/movable) || AM.anchored)
-		if(confused && prob(50) && m_intent=="run")
+		if(confused && prob(50) && IS_RUNNING(src))
 			Weaken(2)
 			playsound(src, "punch", 25, 1, -1)
 			visible_message("<span class='warning'>[src] [pick("ran", "slammed")] into \the [AM]!</span>")

code/modules/mob/living/simple_mob/simple_hud.dm

@@ -124,7 +124,7 @@
 	using = new /obj/screen()
 	using.name = "mov_intent"
 	using.icon = ui_style
-	using.icon_state = (m_intent == "run" ? "running" : "walking")
+	using.icon_state = move_intent.hud_icon_state
 	using.screen_loc = ui_movi
 	using.color = ui_color
 	using.alpha = ui_alpha

code/modules/mob/living/simple_mob/simple_mob.dm

@@ -244,7 +244,7 @@
 			. = 1
 		. *= purge
 
-	if(m_intent == "walk")
+	if(IS_WALKING(src))
 		. *= 1.5
 
 	 . += config.animal_delay

code/modules/mob/mob.dm

@@ -34,6 +34,7 @@
 	zone_sel = null
 
 /mob/Initialize()
+	move_intent = GET_DECL(/decl/move_intent/run) // Sets the initial move_intent.
 	mob_list += src
 	if(stat == DEAD)
 		dead_mob_list += src

code/modules/mob/mob_defines.dm

@@ -112,8 +112,13 @@
 	var/intent = null//Living
 	var/shakecamera = 0
 	var/a_intent = I_HELP//Living
-	var/m_int = null//Living
-	var/m_intent = "run"//Living
+
+	var/decl/move_intent/move_intent = null // Living.
+	var/list/move_intents = list(
+		/decl/move_intent/run,
+		/decl/move_intent/walk
+	)
+
 	var/lastKnownIP = null
 	var/obj/buckled = null//Living
 

code/modules/mob/mob_movement.dm

@@ -12,13 +12,9 @@
 		. += 5
 
 	// Movespeed delay based on movement mode
-	switch(m_intent)
-		if("run")
-			if(drowsyness > 0)
-				. += 6
-			. += config.run_speed
-		if("walk")
-			. += config.walk_speed
+	if(IS_RUNNING(src) && drowsyness > 0)
+		. += 6
+	. += move_intent.move_delay
 
 /client/proc/client_dir(input, direction=-1)
 	return turn(input, direction*dir2angle(dir))
@@ -260,13 +256,10 @@
 					return // No hands to drive your chair? Tough luck!
 			//drunk wheelchair driving
 			else if(my_mob.confused)
-				switch(my_mob.m_intent)
-					if("run")
-						if(prob(50))
-							direct = turn(direct, pick(90, -90))
-					if("walk")
-						if(prob(25))
-							direct = turn(direct, pick(90, -90))
+				if(IS_RUNNING(my_mob) && prob(50))
+					direct = turn(direct, pick(90, -90))
+				else if(IS_WALKING(my_mob) && prob(25))
+					direct = turn(direct, pick(90, -90))
 			total_delay += 3
 
 	// We are now going to move
@@ -275,15 +268,12 @@
 
 	// Confused direction randomization
 	if(my_mob.confused)
-		switch(my_mob.m_intent)
-			if("run")
-				if(prob(75))
-					direct = turn(direct, pick(90, -90))
-					n = get_step(my_mob, direct)
-			if("walk")
-				if(prob(25))
-					direct = turn(direct, pick(90, -90))
-					n = get_step(my_mob, direct)
+		if(IS_RUNNING(my_mob) && prob(75))
+			direct = turn(direct, pick(90, -90))
+			n = get_step(my_mob, direct)
+		else if(IS_WALKING(my_mob) && prob(25))
+			direct = turn(direct, pick(90, -90))
+			n = get_step(my_mob, direct)
 
 	total_delay = DS2NEARESTTICK(total_delay) //Rounded to the next tick in equivalent ds
 	my_mob.setMoveCooldown(total_delay)