Added script command 'isbeginquest'.

Aegis has been using this command instead of 'checkquest(id,HASQUEST)' for years, so we will no longer be writing workarounds for it.

Signed-off-by: Euphy <euphy.raliel@rathena.org>

doc/script_commands.txt

@@ -3,7 +3,7 @@
 //===== By: ==================================================
 //= rAthena Dev Team
 //===== Last Updated: ========================================
-//= 20131118
+//= 20140111
 //===== Description: =========================================
 //= A reference manual for the rAthena scripting language.
 //= Commands are sorted depending on their functionality.
@@ -7532,6 +7532,15 @@ If parameter "HUNTING" is supplied:
 
 ---------------------------------------
 
+*isbegin_quest(<ID>)
+
+Return the state of the quest: 
+	0 = Quest not started (not in quest log)
+	1  = Quest has been given (state is either "inactive" or "active")
+	2  = Quest completed
+
+---------------------------------------
+
 *showevent <state>, <color>;
 
 Show a colored mark in the mini-map like "viewpoint" and an emotion on top of a NPC.

src/map/script.c

@@ -16373,6 +16373,19 @@ BUILDIN_FUNC(checkquest)
 	return SCRIPT_CMD_SUCCESS;
 }
 
+BUILDIN_FUNC(isbegin_quest)
+{
+	struct map_session_data *sd = script_rid2sd(st);
+	int i;
+
+	nullpo_ret(sd);
+
+	i = quest_check(sd, script_getnum(st, 2), (quest_check_type) HAVEQUEST);
+	script_pushint(st, i + (i < 1));
+
+	return SCRIPT_CMD_SUCCESS;
+}
+
 BUILDIN_FUNC(showevent)
 {
 	TBL_PC *sd = script_rid2sd(st);
@@ -18759,6 +18772,7 @@ struct script_function buildin_func[] = {
 	BUILDIN_DEF(erasequest, "i"),
 	BUILDIN_DEF(completequest, "i"),
 	BUILDIN_DEF(checkquest, "i?"),
+	BUILDIN_DEF(isbegin_quest,"i"),
 	BUILDIN_DEF(changequest, "ii"),
 	BUILDIN_DEF(showevent, "ii"),