Expand 'checkvending' script

* Added returned values for buying store.
* Made returned values as bitmask. &1 - Vending, &2 - Autotrading, &4 - Buyingstore

Signed-off-by: Cydh Ramdh <house.bad@gmail.com>

doc/script_commands.txt

@@ -3567,24 +3567,35 @@ warg and 0 if they don't.
 ---------------------------------------
 
 *checkvending({"<Player Name>"})
-*checkchatting({"<Player Name>"})
 
-Checks if the player is vending or in a chatroom.
+Checks if the player is vending or has buyingstore.
 Name is optional, and defaults to the attached player if omitted.
 
-Return values for 'checkvending' are
-  0 = not vending
+The returned values are bitmask of.
+  0 = not vending, doesn't have buyingstore, & not autotrading
   1 = normal vending
-  2 = vending using @autotrade
-
-'checkchatting' returns 1 if they are in a chat room, 0 if they are not.
+  2 = using @autotrade
+  4 = has buyingstore
 
 Examples:
-	//This will check if Aaron is vending, and if so, put a message in front
-	//of the attached player saying Aaron is vending.
-	if (checkvending("Aaron"))
+	//This will check if Aaron's state
+	.@state = checkvending("Aaron");
+	if (.@state&1)
 		mes "Aaron is currently vending!";
+	if (.@state&2)
+		mes "Aaron is autotrading!";
+	if (.@state&4)
+		mes "Aaron has buying store!";
 
+---------------------------------------
+
+*checkchatting({"<Player Name>"})
+
+Checks if the player is in a chatroom.
+Name is optional, and defaults to the attached player if omitted.
+Returns 1 if they are in a chat room, 0 if they are not.
+
+Examples:
 	//This will check if the attached player in a chat room or not.
 	if (checkchatting())
 		mes "You are currently in a chat room!";

src/map/script.c

@@ -15929,19 +15929,37 @@ BUILDIN_FUNC(getmonsterinfo)
 	return SCRIPT_CMD_SUCCESS;
 }
 
-BUILDIN_FUNC(checkvending) // check vending [Nab4]
-{
+/**
+ * Check player's vending/buyingstore/autotrade state
+ * checkvending({"<Player Name>"})
+ * @author [Nab4]
+ */
+BUILDIN_FUNC(checkvending) {
 	TBL_PC *sd = NULL;
 
-	if(script_hasdata(st,2))
-		sd = map_nick2sd(script_getstr(st,2));
+	if (script_hasdata(st,2)) {
+		if (!(sd = map_nick2sd(script_getstr(st,2)))) {
+			ShowError("buildin_checkvending: Player '%s' is not online!\n", script_getstr(st,2));
+			return SCRIPT_CMD_FAILURE;
+		}
+	}
 	else
 		sd = script_rid2sd(st);
 
-	if(sd)
-		script_pushint(st, sd->state.autotrade ? 2 : sd->state.vending);
-	else
+	if (!sd) {
 		script_pushint(st,0);
+		return SCRIPT_CMD_SUCCESS;
+	}
+	else {
+		int8 ret = 0;
+		if (sd->state.vending)
+			ret |= 1;
+		if (sd->state.autotrade)
+			ret |= 2;
+		if (sd->state.buyingstore)
+			ret |= 4;
+		script_pushint(st, ret);
+	}
 	return SCRIPT_CMD_SUCCESS;
 }