#ItemLink <Item ID Number>

[AndMetal]

I had a chance to revisit this a little (no testing yet, just theory), and this is what I came up with this time...

Originally Posted by AndMetal

In zone/questmgr.h, change

	char* itemlink(int item_id);

In zone/questmgr.cpp, change

char* QuestManager::itemlink(int item_id) {
	//I dont think this is right anymore, need the hash
/*
uint32_t calc_hash (const char *string)
{
    register hash = 0;

    while (*string != '\0')
    {
        register c = toupper(*string);

        asm volatile("
            imul $31, %1, %1;
            movzx %%ax, %%edx;
            addl %%edx, %1;
            movl %1, %0;
            "
            :"=r"(hash)
            :"D"(hash), "a"(c)
            :"%edx"
             );

        //This is what the inline asm is doing:
        //hash *= 0x1f;
        //hash += (int)c;

        string++;
    }

    return hash;
}


Now the not so simple part, generating the string to feed into the hash function.

The string for normal (unaugmented) items looks like this:
Code:
sprintf(hashstr, "%d%s%s%d %d %d %d %d %d %d %d", id, name, "-1-1-1-1-1", hp, mana, ac, light, icon, price, size, weight);


The string for bags looks like this:
Code:
sprintf(hashstr, "%d%s%d%d%d%d", id, name, bagslots, bagwr, price, weight);


The string for books looks like this:
Code:
sprintf(hashstr, "%d%s%d%d", id, name, weight, booktype);
*/

// MYRA - added itemlink(ID) command
	const Item_Struct* item = 0;
	int16 itemid = item_id;
	item = database.GetItem(itemid);
	return (sprintf("%c%06X%s%s%c",0x12,itemid,"000000000000000000000000000000000000000",item,0x12));
}

And in zone/perlparser.cpp (really not sure about this part), change

XS(XS__itemlink);
XS(XS__itemlink)
{
	dXSARGS;
	if (items != 1)
		Perl_croak(aTHX_ "Usage: itemlink(item_id)");

	char* RETVAL;
	int	item_id = (int)SvIV(ST(0));

	RETVAL = quest_manager.itemlink(item_id);

	ST(0) = RETVAL;
	sv_2mortal(ST(0));
	XSRETURN(1);
}

zone/questmgr.h:

	void itemlink(char &ret, int item_id);

zone/questmgr.cpp:

void QuestManager::itemlink(char &ret, int item_id) {
	const Item_Struct* item = 0;
	uint32 itemid = item_id;
	item = database.GetItem(itemid);
	ret = sprintf(ret, "%c%06X%s%s%c",0x12,itemid,"000000000000000000000000000000000000000",item,0x12);
}

zone/perlparser.cpp:

XS(XS__itemlink);
XS(XS__itemlink)
{
	dXSARGS;
	if (items != 1)
		Perl_croak(aTHX_ "Usage: itemlink(item_id)");

	char* RETVAL;	//may need to set this to a fixed size
	int	item_id = (int)SvIV(ST(0));

	quest_manager.itemlink(RETVAL, item_id);

	ST(0) = RETVAL;
	sv_2mortal(ST(0));
	XSRETURN(1);
}

If that works, then we can easily add in support for Augments.