[danielkza]

We all know that AMXX has a huge set of functions for almost everything we need.

But a lot of scripters, mostly beginners,don't know a lot of useful functions that can make the code simpler,efficient and more readable.


sizeof var
charsmax var (AMXX 1.8 ONLY)

Not functions, but builtin keywords. Return the size of a variable in cells.
Each array element is a cell. Specially useful to not hardcode string lengths.

new string[32]
sizeof string == 32 // safe string lenght: 31 | sizeof string - 1 | charsmax string 

access(id,flag)

Checks if user has a admin flag

access(id,ADMIN_IMMUNITY)

clamp(num,min,max)

Clamps a number between other two.If it's higher than max,set it to max.Same with min.

new var = 5
var = clamp(var,0,3) // var > 3 so var is set to 3
var = clamp(var,4,10) // var< 4 so var is set to 4 

max(num,max)
min(num,min)

If 'num' is higher/lower then max/min, set it to max/min

new var=5
var = max(var,4) // var still 5, because 5 > 4
var = min(var,4) // var is now 4,because 5 < 4

var = max(var,0) // make sure value is not negative
var = min(var,255) // make sure value is not higher than 255,for write_byte,for example 

arrayset(array[],value,size)

Sets an array to 'value' up to element 'size'-1

new array[3] // all vars are initialized to 0
arrayset(array,-1,2) // sets values to '-1' until element '1'

array[0] == -1
array[1] == -1
array[2] == 0 // only set until element 1(2-1) 

get_cvar_pointer(cvar[])

Returns a pointer to a cvar by name.Useful when you check for non-AMXX cvars constantly

new pointer = get_cvar_pointer("sv_alltalk") // pointer now is like any pcvar

get_pcvar_num(pointer)

is_user_admin ( id )

Checks if a user has admin rights

is_user_admin(id)

get_weaponid(name[])
get_weaponname(id,name[],len)

Converts a weapon id to a weapon name or the inverse.

get_weaponid("weapon_scout") == CSW_SCOUT
new name[32]
get_weaponname(CSW_SCOUT,name,sizeof name-1) // name == "weapon_scout" 

[P34nut]

www.amxmodx.org/funcwiki.php
There is a lot of information there

[danielkza]

Yep,but nobody has time to look at it all,specially beginners,and where did you think I took them?

[Lee]

Most of these are stocks and therefore only provide another level of abstraction. Nobody can say with any degree of authority whether or not it is better to use them, because while they keep code concise, they inevitably hide what it is they're doing. Unless you read the include files that is - but those who do that would already know about these very basic functions.

Since a few people tend to hear about what's optimal in some cases and then use it at every possible opportunity, it's worth noting that there's no point in using get_cvar_pointer() if you're going to get or set the value only once, because [s|g]et_cvar_*() would have to do the same work anyway.

get_weaponname(CSW_SCOUT,name,sizeof name-1)

You don't think you should use charsmax?

Another stock you might think is worthwhile is show_activity().

[danielkza]

I do not recommend using charsmax because it's only in 1.8,so it's better to keep compatiblility with previous versions.

Originally Posted by danielkza check for non-AMXX cvars constantly

[potatis_invalido]

[eXist]

Originally Posted by danielkza is_user_admin ( id ) Checks if a user has admin rights is_user_admin(id)

Does this command check for anyflag and call that person an admin?

For example, if someone has the flag "s" will that function return true?

[pRED*]

is_user_admin(id) will return true if the user has any admin flags.

You need to use the other admin functions to check for a specific access level