Spawn sync helper

See spawn_sync.dm for documentations

code/_helpers/spawn_sync.dm

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+//-------------------------------
+/* Spawn sync helper
+ 
+   Helps syncronize spawn()ing multiple processes in loops.
+ 
+   Example for using this:
+
+	//Create new spawn_sync datum
+	var/datum/spawn_sync/sync = new()
+
+	for(var/obj/O in list)
+		//Open a sync counter before a spawn call
+		sync.open()
+		spawn()
+			//Utilise try/catch keywords here so the code continues even if an error occurs
+			try
+				//code to do stuff goes here
+				O.do_stuff()
+			catch
+
+			//Close the sync counter
+			sync.close()
+
+	//Call sync.finalize() after the last spawn call to finalize the syncronize process
+	sync.finalize()
+
+	//Create a while loop to check if the sync is complete yet, it will return true once all the spawn threads have completed
+	while(sync.check())
+		//Add a sleep call to delay each check
+		sleep(1)
+
+	//Once all the threads have closed, or the failsafe has triggered, the code will continue
+*/
+//-------------------------------
+/datum/spawn_sync
+	var/count = 1
+	var/safety = 100	//aprox 10 seconds
+
+//Opens a thread counter
+/datum/spawn_sync/proc/open()
+	count++
+
+//Closes a thread counter
+/datum/spawn_sync/proc/close()
+	count--
+
+//Finalizes the spawn sync by removing the original starting count
+/datum/spawn_sync/proc/finalize()
+	close()
+
+//Resets the counter if you want to utilize the same datum multiple times
+/datum/spawn_sync/proc/reset()
+	count = 1
+	safety = 100
+
+//Check if all threads have returned
+// Returns 0 if not all threads have completed
+// Returns 1 if all threads have completed
+/datum/spawn_sync/proc/check()
+	safety_check()
+	return count > 0 ? 1 : 0
+
+//Failsafe in case something breaks horribly
+/datum/spawn_sync/proc/safety_check()
+	safety--
+	if(safety < 1)
+		count = 0
+
+//Set failsafe check count in case you need more
+/datum/spawn_sync/proc/set_safety_check(var/num)
+	safety = num