[MIRROR] Makes obj_integrity private and only updated through procs (#6125)

* Makes obj_integrity only updated through procs (#59474)

Having things updating integrity directly is just going to cause more problems down the line as more elements and components depend on being notified of integrity changes. It's an easy mistake to make so making it private should deal with the problem.

get_integrity() might be useful in the future but is mainly a side effect of making obj_integrity private as that also disallows reads.

* Makes obj_integrity private and only updated through procs

* Mirror!

Co-authored-by: Emmett Gaines <ninjanomnom@gmail.com>
Co-authored-by: Funce <funce.973@gmail.com>

code/datums/components/dejavu.dm

@@ -56,7 +56,7 @@
 
 	else if(isobj(parent))
 		var/obj/O = parent
-		integrity = O.obj_integrity
+		integrity = O.get_integrity()
 		rewind_type = .proc/rewind_obj
 
 	addtimer(CALLBACK(src, rewind_type), rewind_interval)
@@ -107,5 +107,5 @@
 
 /datum/component/dejavu/proc/rewind_obj()
 	var/obj/master = parent
-	master.obj_integrity = integrity
+	master.update_integrity(integrity)
 	rewind()

code/datums/components/gas_leaker.dm

@@ -72,10 +72,11 @@
 	return process_machine(master, airs)
 
 /datum/component/gas_leaker/proc/process_leak(obj/master, list/airs)
-	if(master.obj_integrity > master.max_integrity * integrity_leak_percent)
+	var/current_integrity = master.get_integrity()
+	if(current_integrity > master.max_integrity * integrity_leak_percent)
 		return PROCESS_KILL
 	var/turf/location = get_turf(master)
-	var/true_rate = (1 - (master.obj_integrity / master.max_integrity)) * leak_rate
+	var/true_rate = (1 - (current_integrity / master.max_integrity)) * leak_rate
 	for(var/datum/gas_mixture/mix as anything in airs)
 		var/pressure = mix.return_pressure()
 		if(mix.release_gas_to(location.return_air(), pressure, true_rate))