Request new script command

[REKT]

Hi, if there is anybody who can help me solved my issue since i couldn't find any resources in script_commands.txt

So:

// itemcheck(<itemid>{,<charid>})

return 1 if the item is usable and wearable on attached character, or on specific charid on argument 2

else return 0

Please drop me a PM.

Edited June 15, 2016 by Keysito

[Secrets]

You can use getiteminfo command and compare the job bitmask with player's job.

[REKT]

Okay, thanks for pointing out. I'll give a try.

Can i ask for example of bitmask?

Thank you.

[Kurofly]

There is a great example of bitmasks use in the script commands, it's pretty simple and useful:

The bitwise operator AND (&) is used to test two values against each other, 
	and results in setting bits which are active in both arguments. This can
	be used for a few things, but in rAthena this operator is usually used to
	create bit-masks in scripts. 
	
	The bitwise operator OR (|)sets to 1 a binary position if the binary position
	of one of the numbers is 1. This way a variable can hold several values we can check,
	known as bit-mask. A variable currently can hold up to 32 bit-masks (from position 0
	to position 1). This is a cheap(skate) and easy way to avoid using arrays to store several checks
	that a player can have.
	
	A bit-mask basically is (ab)using the variables bits to set various options in 
	one variable. With the current limit if variables it is possible to store 32 
	different options in one variable (by using the bits on position 0 to 31).

	Example(s):
	- Basic example of the & operator, bit example:
		10 & 2 = 2
	Why? :
		10 = 2^1 + 2^3 (2 + 8), so in bits, it would be 1010
		2 = 2^1 (2), so in bits (same size) it would be 0010
		The & (AND) operator sets bits which are active (1) in both arguments, so in the
		example 1010 & 0010, only the 2^1 bit is active (1) in both. Resulting in the bit
		0010, which is 2.
	- Basic example of creating and using a bit-mask:
		set @options,2|4|16; //(note: this is the same as 2+4+16, or 22)
		if (@options & 1)	mes "Option 1 is activated";
		if (@options & 2) mes "Option 2 is activated";
		if (@options & 4) mes "Option 3 is activated";
		if (@options & 8) mes "Option 4 is activated";
		if (@options & 16) mes "Options 5 is activated";

I guess you'd have to edit the 'getiteminfo' script command in order to get the job type of items

Job: Which jobs this item is available for. Values below can be combined to achieve availability for multiple job classes, i. e. 0x2|0x4 -> 0x6 (Swordman+Mage)

(S.) Novice         (2^00): 0x00000001
Swordman            (2^01): 0x00000002
Mage                (2^02): 0x00000004
Archer              (2^03): 0x00000008
Acolyte             (2^04): 0x00000010
Merchant            (2^05): 0x00000020
Thief               (2^06): 0x00000040
Knight              (2^07): 0x00000080
Priest              (2^08): 0x00000100
Wizard              (2^09): 0x00000200
Blacksmith          (2^10): 0x00000400
Hunter              (2^11): 0x00000800
Assassin            (2^12): 0x00001000
Unused              (2^13): 0x00002000
Crusader            (2^14): 0x00004000
Monk                (2^15): 0x00008000
Sage                (2^16): 0x00010000
Rogue               (2^17): 0x00020000
Alchemist           (2^18): 0x00040000
Bard/Dancer         (2^19): 0x00080000
Unused              (2^20): 0x00100000
Taekwon             (2^21): 0x00200000
StarGladiator       (2^22): 0x00400000
Soul Linker         (2^23): 0x00800000
Gunslinger          (2^24): 0x01000000
Ninja               (2^25): 0x02000000
Gangsi              (2^26): 0x04000000
Death Knight        (2^27): 0x08000000
Dark Collector      (2^28): 0x10000000
Kagerou/Oboro       (2^29): 0x20000000
Rebellion           (2^30): 0x40000000
All Classes               : 0xFFFFFFFF
Every Job Except Novice   : 0xFFFFFFFE

This way you'd be able to use bitmasks with the 'BaseJob' player variable and so telling if the item is wearable by the player.

Edited June 16, 2016 by Kurofly