Adds a option to config.txt called PROTECT_ROLES_FROM_ANTAGONIST.

If PROTECT_ROLES_FROM_ANTAGONIST is set, sec/hos/captain/AI cannot be antagonists in most modes
If it is not set, only jobs that are mutually exclusive to the role (sec/head during rev, etc) are immune from being antagonist

git-svn-id: http://tgstation13.googlecode.com/svn/trunk@3225 316c924e-a436-60f5-8080-3fe189b3f50e

code/datums/configuration.dm

@@ -31,6 +31,7 @@
 	var/del_new_on_log = 1				// del's new players if they log before they spawn in
 	var/feature_object_spell_system = 0 //spawns a spellbook which gives object-type spells instead of verb-type spells for the wizard
 	var/traitor_scaling = 0 //if amount of traitors scales based on amount of players
+	var/protect_roles_from_antagonist = 0// If security and such can be tratior/cult/other
 
 	var/list/mode_names = list()
 	var/list/modes = list()				// allowed modes
@@ -231,6 +232,9 @@
 				if ("traitor_scaling")
 					config.traitor_scaling = 1
 
+				if("protect_roles_from_antagonist")
+					config.protect_roles_from_antagonist = 1
+
 				if ("probability")
 					var/prob_pos = findtext(value, " ")
 					var/prob_name = null

code/game/gamemodes/changeling/changeling.dm

@@ -43,6 +43,10 @@
 	world << "<B>There are alien changelings on the station. Do not let the changelings succeed!</B>"
 
 /datum/game_mode/changeling/pre_setup()
+
+	if(config.protect_roles_from_antagonist)
+		restricted_jobs += protected_jobs
+
 	var/list/datum/mind/possible_changelings = get_players_for_role(BE_CHANGELING)
 
 	for(var/datum/mind/player in possible_changelings)

code/game/gamemodes/changeling/traitor_chan.dm

@@ -2,6 +2,7 @@
 	name = "traitor+changeling"
 	config_tag = "traitorchan"
 	traitors_possible = 3 //hard limit on traitors if scaling is turned off
+	restricted_jobs = list("AI", "Cyborg")
 	required_players = 20
 	required_enemies = 2
 	recommended_enemies = 3
@@ -12,6 +13,9 @@
 
 
 /datum/game_mode/traitor/changeling/pre_setup()
+	if(config.protect_roles_from_antagonist)
+		restricted_jobs += protected_jobs
+
 	var/list/datum/mind/possible_changelings = get_players_for_role(BE_CHANGELING)
 
 	for(var/datum/mind/player in possible_changelings)

code/game/gamemodes/cult/cult.dm

@@ -19,7 +19,8 @@
 /datum/game_mode/cult
 	name = "cult"
 	config_tag = "cult"
-	restricted_jobs = list("Chaplain", "Security Officer", "Warden", "Detective", "AI", "Cyborg", "Captain", "Head of Security")
+	restricted_jobs = list("Chaplain","AI", "Cyborg")
+	protected_jobs = list("Security Officer", "Warden", "Detective", "Captain", "Head of Security")
 	required_players = 15
 	required_enemies = 3
 	recommended_enemies = 4
@@ -57,6 +58,9 @@
 		objectives += "eldergod"
 		objectives += "sacrifice"
 
+	if(config.protect_roles_from_antagonist)
+		restricted_jobs += protected_jobs
+
 	var/list/cultists_possible = get_players_for_role(BE_CULTIST)
 	for(var/datum/mind/player in cultists_possible)
 		for(var/job in restricted_jobs)//Removing heads and such from the list

code/game/gamemodes/game_mode.dm

@@ -20,7 +20,8 @@
 		station_was_nuked = 0 //see nuclearbomb.dm and malfunction.dm
 		explosion_in_progress = 0 //sit back and relax
 		list/datum/mind/modePlayer = new
-		list/restricted_jobs = list()
+		list/restricted_jobs = list()	// Jobs it doesn't make sense to be.  I.E chaplain or AI cultist
+		list/protected_jobs = list()	// Jobs that can't be tratiors because
 		required_players = 0
 		required_enemies = 0
 		recommended_enemies = 0

code/game/gamemodes/nuclear/nuclear.dm

@@ -30,6 +30,7 @@
 /datum/game_mode/nuclear/can_start()//This could be better, will likely have to recode it later
 	if(!..())
 		return 0
+
 	var/list/possible_syndicates = get_players_for_role(BE_OPERATIVE)
 	var/agent_number = 0
 

code/game/gamemodes/revolution/revolution.dm

@@ -40,6 +40,10 @@
 //Gets the round setup, cancelling if there's not enough players at the start//
 ///////////////////////////////////////////////////////////////////////////////
 /datum/game_mode/revolution/pre_setup()
+
+	if(config.protect_roles_from_antagonist)
+		restricted_jobs += protected_jobs
+
 	var/list/datum/mind/possible_headrevs = get_players_for_role(BE_REV)
 
 	var/head_check = 0

code/game/gamemodes/traitor/traitor.dm

@@ -5,7 +5,8 @@
 /datum/game_mode/traitor
 	name = "traitor"
 	config_tag = "traitor"
-	restricted_jobs = list("Cyborg", "AI", "Security Officer", "Warden", "Detective", "Head of Security", "Captain")
+	restricted_jobs = list()
+	protected_jobs = list("Cyborg", "AI", "Security Officer", "Warden", "Detective", "Head of Security", "Captain")
 	required_players = 0
 	required_enemies = 1
 	recommended_enemies = 4
@@ -27,6 +28,10 @@
 
 
 /datum/game_mode/traitor/pre_setup()
+
+	if(config.protect_roles_from_antagonist)
+		restricted_jobs += protected_jobs
+
 	var/list/possible_traitors = get_players_for_role(BE_TRAITOR)
 
 	// stop setup if no possible traitors