- Recursive explosions are not available in a config option. I want to do some live testing. Once live testing is done, if they prove to be better, they can go live. Once that happens, the config option can be removed.

git-svn-id: http://tgstation13.googlecode.com/svn/trunk@5555 316c924e-a436-60f5-8080-3fe189b3f50e

code/controllers/configuration.dm

@@ -96,6 +96,8 @@
 	var/ban_legacy_system = 0	//Defines whether the server uses the legacy banning system with the files in /data or the SQL system. Config option in config.txt
 	var/use_age_restriction_for_jobs = 0 //Do jobs use account age restrictions? --requires database
 
+	var/use_recursive_explosions //Defines whether the server uses recursive or circular explosions.
+
 	var/assistant_maint = 0 //Do assistants get maint access?
 	var/gateway_delay = 18000 //How long the gateway takes before it activates. Default is half an hour.
 	var/ghost_interaction = 0
@@ -158,6 +160,9 @@
 				if ("jobs_have_minimal_access")
 					config.jobs_have_minimal_access = 1
 
+				if ("use_recursive_explosions")
+					use_recursive_explosions = 1
+
 				if ("log_ooc")
 					config.log_ooc = 1
 

code/game/objects/explosion.dm

@@ -10,6 +10,11 @@
 proc/explosion(turf/epicenter, devastation_range, heavy_impact_range, light_impact_range, flash_range, adminlog = 1)
 	src = null	//so we don't abort once src is deleted
 	spawn(0)
+		if(config.use_recursive_explosions)
+			var/power = devastation_range * 2 + heavy_impact_range + light_impact_range //The ranges add up, ie light 14 includes both heavy 7 and devestation 3. So this calculation means devestation counts for 4, heavy for 2 and light for 1 power, giving us a cap of 27 power.
+			explosion_rec(epicenter, power)
+			return
+
 		var/start = world.timeofday
 		epicenter = get_turf(epicenter)
 		if(!epicenter) return

code/game/objects/explosion_recursive.dm

@@ -66,7 +66,11 @@ proc/explosion_rec(turf/epicenter, power)
 		if(ET.max_power <= 0) continue
 		if(!ET.turf) continue
 
-		var/severity = 4 - round(max(min( 3, (ET.max_power / 3) ) ,1), 1)
+		//Wow severity looks confusing to calculate... Fret not, I didn't leave you with any additional instructions or help. (just kidding, see the line under the calculation)
+		var/severity = 4 - round(max(min( 3, ((ET.max_power - ET.turf.explosion_resistance) / (max(3,(power/3)))) ) ,1), 1)
+								//sanity			effective power on tile				divided by either 3 or one third the total explosion power
+								//															One third because there are three power levels and I
+								//															want each one to take up a third of the crater
 		var/x = ET.turf.x
 		var/y = ET.turf.y
 		var/z = ET.turf.z

config/config.txt

@@ -25,6 +25,9 @@ JOBS_HAVE_MINIMAL_ACCESS
 ## you have noone older than 0 days, since noone has been logged yet. Only turn this on once you have had the database up for 30 days.
 #USE_AGE_RESTRICTION_FOR_JOBS
 
+## Unhash this to use recursive explosions, keep it hashed to use circle explosions. Recursive explosions react to walls, airlocks and blast doors, making them look a lot cooler than the boring old circular explosions. They require more CPU and are (as of january 2013) experimental
+#USE_RECURSIVE_EXPLOSIONS
+
 ## log OOC channel
 LOG_OOC