[skz]

Hello guys,

I'm creating a Knife Skins Shop for my server, and I want to save in only one variable which knifes a user have, and im trying to use the system 1, 2, 4, 8, 16 (if the user buys the first skin and the third, is value will be 5, because 1+4) but im having serious problems, because I think its hardcode to check like this:

PHP Code:

if (szKnife[id] == 1 || szKnife[id] == 3 || szKnife[id] == 7 etc..) 


No one knows a equation that will know which knife skins the user have, with the number in his variable?

[OciXCrom]

PHP Code:

switch(szKnife[id])
{
    case 1, 3, 7: { }
} 


[klippy]

PHP Code:

enum Knives (<<= 1)
{
    Knife_First = 1
    Knife_Second,
    Knife_Third
    Knife_Nth
};

new Knives: g_PlayerKnives[33]; 


To add a knife to a player:

PHP Code:

g_PlayerKnives[id] |= Knife_First; 


To remove it:

PHP Code:

g_PlayerKnives[id] &= ~Knife_First; 


And somewhere later on to check if they have a specific knife

PHP Code:

if(g_PlayerKnives[id] & Knife_First)
{
    // They have the first knife
}
if(g_PlayerKnives[id] & (Knife_Second | Knife_Third))
{
    // They have at least the second or third knife
}
if(g_PlayerKnives[id] & (Knife_Second | Knife_Third) == (Knife_Second | Knife_Third))
{
    // They have both the second and third knives
} 


Search and read up on a few tutorials on bitsums and bit arithmetic around AlliedModders (or even somewhere else). There you will most likely find some useful macros to make it easier for you to deal with bitsums.

[siriusmd99]

it's not correct.
You shall use & symbol, like:

if(szKnife[id] & 1 || szKnife[id] & 2 || szKnife[id] & 3)

But explain what are you trying to do...

[skz]

Originally Posted by OciXCrom PHP Code: switch(szKnife[id]) {     case 1, 3, 7: { } }

Its the same thing as I said, but in another way...

Originally Posted by KliPPy PHP Code: enum Knives (<<= 1) {     Knife_First = 1     Knife_Second,     Knife_Third     Knife_Nth }; new Knives: g_PlayerKnives[33];  To add a knife to a player: PHP Code: g_PlayerKnives[id] |= Knife_First;  To remove it: PHP Code: g_PlayerKnives[id] &= ~Knife_First;  And somewhere later on to check if they have a specific knife PHP Code: if(g_PlayerKnives[id] & Knife_First) {     // They have the first knife } if(g_PlayerKnives[id] & (Knife_Second | Knife_Third)) {     // They have at least the second or third knife } if(g_PlayerKnives[id] & (Knife_Second | Knife_Third) == (Knife_Second | Knife_Third)) {     // They have both the second and third knives }  Search and read up on a few tutorials on bitsums and bit arithmetic around AlliedModders (or even somewhere else). There you will most likely find some useful macros to make it easier for you to deal with bitsums.

I will try your way, thanks

[skz]

Originally Posted by KliPPy PHP Code: enum Knives (<<= 1) {     Knife_First = 1     Knife_Second,     Knife_Third     Knife_Nth }; new Knives: g_PlayerKnives[33];  To add a knife to a player: PHP Code: g_PlayerKnives[id] |= Knife_First;  To remove it: PHP Code: g_PlayerKnives[id] &= ~Knife_First;  And somewhere later on to check if they have a specific knife PHP Code: if(g_PlayerKnives[id] & Knife_First) {     // They have the first knife } if(g_PlayerKnives[id] & (Knife_Second | Knife_Third)) {     // They have at least the second or third knife } if(g_PlayerKnives[id] & (Knife_Second | Knife_Third) == (Knife_Second | Knife_Third)) {     // They have both the second and third knives }  Search and read up on a few tutorials on bitsums and bit arithmetic around AlliedModders (or even somewhere else). There you will most likely find some useful macros to make it easier for you to deal with bitsums.

g_PlayerKnives[id] |= Knife_First; that gives me an error

[klippy]

Originally Posted by skz g_PlayerKnives[id] |= Knife_First; that gives me an error

It would be really helpful if you said what that error is. I don't get it how you people even expect help when you give no information... That happens a lot, sadly.

[skz]

Sorry man, you're right!

I solved that error, but now i have another one:

PHP Code:

g_PlayerKnives[id] = SQL_ReadResult(Query, 4); 


warning 213: tag mismatch

[klippy]

PHP Code:

g_PlayerKnives[id] = Knives:SQL_ReadResult(Query, 4); 


No idea why did I tag it in the first place. Anyway, any time you need to assign a value that isn't from the Knives enumeration, or a variable that's not tagged with Knives, you have to retag(cast) it to avoid the warning.

[siriusmd99]

Mabe sure result is integer (*int) and not boolean, float or other type of data.
p.s. You can check its type when you create the SQL table.

And if it has wrong data type then you shall delete the table and let plugin create new one.