[MIRROR] Refactors flightsuit code to hopefully be less dumb (#1975)

* Refactors flightsuit code to hopefully be less dumb

* Update flightsuit.dm

* Delete flightsuit.dm.rej

* Delete objs.dm.rej

* Delete mob_movement.dm.rej

* Delete carbon_movement.dm.rej

* Update mob_movement.dm

* Update flightsuit.dm

* Update mob_movement.dm

* fix

code/modules/mob/mob_defines.dm

@@ -104,6 +104,7 @@
 //The last mob/living/carbon to push/drag/grab this mob (mostly used by slimes friend recognition)
 	var/mob/living/carbon/LAssailant = null
 
+	var/list/obj/user_movement_hooks	//Passes movement in client/Move() to these!
 
 	var/list/mob_spell_list = list() //construct spells and mime spells. Spells that do not transfer from one mob to another and can not be lost in mindswap.
 

code/modules/mob/mob_movement.dm

@@ -1,15 +1,15 @@
 /mob/CanPass(atom/movable/mover, turf/target, height=0)
 	if(height==0)
-		return 1
+		return TRUE
 	if(istype(mover, /obj/item/projectile) || mover.throwing)
 		return (!density || lying)
 	if(mover.checkpass(PASSMOB))
-		return 1
+		return TRUE
 	if(buckled == mover)
-		return 1
+		return TRUE
 	if(ismob(mover))
 		if (mover in buckled_mobs)
-			return 1
+			return TRUE
 	return (!mover.density || !density || lying)
 
 
@@ -113,29 +113,30 @@
 #define MOVEMENT_DELAY_BUFFER_DELTA 1.25
 /client/Move(n, direct)
 	if(world.time < move_delay)
-		return 0
+		return FALSE
 	var/old_move_delay = move_delay
 	move_delay = world.time+world.tick_lag //this is here because Move() can now be called mutiple times per tick
 	if(!mob || !mob.loc)
-		return 0
+		return FALSE
+	var/oldloc = mob.loc
 	if(mob.notransform)
-		return 0	//This is sota the goto stop mobs from moving var
+		return FALSE	//This is sota the goto stop mobs from moving var
 	if(mob.control_object)
 		return Move_object(direct)
 	if(!isliving(mob))
 		return mob.Move(n,direct)
 	if(mob.stat == DEAD)
 		mob.ghostize()
-		return 0
+		return FALSE
 	if(moving)
-		return 0
+		return FALSE
 	if(mob.force_moving)
-		return 0
+		return FALSE
 	if(isliving(mob))
 		var/mob/living/L = mob
 		if(L.incorporeal_move)	//Move though walls
 			Process_Incorpmove(direct)
-			return 0
+			return FALSE
 
 	if(mob.remote_control)					//we're controlling something, our movement is relayed to it
 		return mob.remote_control.relaymove(mob, direct)
@@ -150,14 +151,14 @@
 		return mob.buckled.relaymove(mob, direct)
 
 	if(!mob.canmove)
-		return 0
+		return FALSE
 
 	if(isobj(mob.loc) || ismob(mob.loc))	//Inside an object, tell it we moved
 		var/atom/O = mob.loc
 		return O.relaymove(mob, direct)
 
 	if(!mob.Process_Spacemove(direct))
-		return 0
+		return FALSE
 
 	//We are now going to move
 	moving = 1
@@ -184,6 +185,10 @@
 		if(mob.throwing)
 			mob.throwing.finalize(FALSE)
 
+	if(LAZYLEN(mob.user_movement_hooks))
+		for(var/obj/O in mob.user_movement_hooks)
+			O.intercept_user_move(direct, mob, n, oldloc)
+
 	return .
 
 /mob/Moved(oldLoc, dir)
@@ -204,15 +209,14 @@
 	if(mob.pulledby)
 		if(mob.incapacitated(ignore_restraints = 1))
 			move_delay = world.time + 10
-			return 1
+			return TRUE
 		else if(mob.restrained(ignore_grab = 1))
 			move_delay = world.time + 10
 			to_chat(src, "<span class='warning'>You're restrained! You can't move!</span>")
-			return 1
+			return TRUE
 		else
 			return mob.resist_grab(1)
 
-
 ///Process_Incorpmove
 ///Called by client/Move()
 ///Allows mobs to run though walls
@@ -277,23 +281,23 @@
 			else
 				L.loc = get_step(L, direct)
 				L.setDir(direct)
-	return 1
+	return TRUE
 
 
 ///Process_Spacemove
 ///Called by /client/Move()
 ///For moving in space
-///Return 1 for movement 0 for none
+///return TRUE for movement 0 for none
 /mob/Process_Spacemove(movement_dir = 0)
 	if(..())
-		return 1
+		return TRUE
 	var/atom/movable/backup = get_spacemove_backup()
 	if(backup)
 		if(istype(backup) && movement_dir && !backup.anchored)
 			if(backup.newtonian_move(turn(movement_dir, 180))) //You're pushing off something movable, so it moves
 				to_chat(src, "<span class='info'>You push off of [backup] to propel yourself.</span>")
-		return 1
-	return 0
+		return TRUE
+	return FALSE
 
 /mob/get_spacemove_backup()
 	for(var/A in orange(1, get_turf(src)))
@@ -325,7 +329,7 @@
 	return has_gravity()
 
 /mob/proc/mob_negates_gravity()
-	return 0
+	return FALSE
 
 //moves the mob/object we're pulling
 /mob/proc/Move_Pulled(atom/A)