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* When loading shop scripts automatically check if the prices can be exploited with OC/DC

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* If the buying price provided in item_db.txt is above 2x higher than selling price for an item no need to reset and redetermine the buying price

git-svn-id: https://svn.code.sf.net/p/rathena/svn/branches/stable@1024 54d463be-8e91-2dee-dedb-b68131a5f0ec
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(no author)
2005-02-03 11:20:57 +00:00
parent d5b829dbfb
commit 200bd8bb6a
3 changed files with 36 additions and 10 deletions
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4
Changelog.txt
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@@ -1,6 +1,10 @@
Date Added
02/03
* When loading shop scripts automatically check if the prices can be exploited
with OC/DC [celest]
* If the buying price provided in item_db.txt is above 2x higher than selling
price for an item no need to reset and redetermine the buying price [celest]
* Fixed a mistake that was causing Ruwach to only work in PvP and PvM [celest]
* Added DracoRPG's code for Joint Beat effects, thanks! [celest]

30
src/map/itemdb.c
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@@ -326,13 +326,29 @@ static int itemdb_readdb(void)
memcpy(id->name,str[1],24);
memcpy(id->jname,str[2],24);
id->type=atoi(str[3]);
// buy≠sell*2 は item_value_db.txt で指定してください。
if (atoi(str[5])) { // sell値を優先とする
id->value_buy=atoi(str[5])*2;
id->value_sell=atoi(str[5]);
} else {
id->value_buy=atoi(str[4]);
id->value_sell=atoi(str[4])/2;
{
int buy = atoi(str[4]), sell = atoi(str[5]);
// if buying price > selling price * 2 consider it valid and don't change it [celest]
if (buy && sell && buy > sell*2){
id->value_buy = buy;
id->value_sell = sell;
} else {
// buy≠sell*2 は item_value_db.txt で指定してください。
if (sell) { // sell値を優先とする
id->value_buy = sell*2;
id->value_sell = sell;
} else {
id->value_buy = buy;
id->value_sell = buy/2;
}
}
// check for bad prices that can possibly cause exploits
if (id->value_buy*75/100 < id->value_sell*124/100) {
sprintf (tmp_output, "Item %s [%d] buying:%d < selling:%d\n",
id->name, id->nameid, id->value_buy*75/100, id->value_sell*124/100);
ShowWarning (tmp_output);
}
}
id->weight=atoi(str[6]);
id->atk=atoi(str[7]);

12
src/map/npc.c
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@@ -1513,15 +1513,21 @@ static int npc_parse_shop(char *w1,char *w2,char *w3,char *w4)
while (p && pos < max) {
int nameid,value;
struct item_data *id;
p++;
if (sscanf(p, "%d:%d", &nameid, &value) != 2)
break;
nd->u.shop_item[pos].nameid = nameid;
if (value < 0) {
struct item_data *id = itemdb_search(nameid);
id = itemdb_search(nameid);
if (value < 0)
value = id->value_buy;
}
nd->u.shop_item[pos].value = value;
// check for bad prices that can possibly cause exploits
if (value*75/100 < id->value_sell*124/100) {
sprintf (tmp_output, "Item %s [%d] buying:%d < selling:%d\n",
id->name, id->nameid, value*75/100, id->value_sell*124/100);
ShowWarning (tmp_output);
}
pos++;
p=strchr(p,',');
}