#include <a_samp>

#if defined _KFU_included
	#endinput
#endif
#define _KFU_included

/*******************************************************************************
* Function: IsPlayerInWater(playerid)
* Description: The IsPlayerInWater need to see if a player is swimming (so it does not work if you're in the water with a vehicle)
*******************************************************************************/

stock IsPlayerInWater(playerid)
{
    new index = GetPlayerAnimationIndex(playerid);
    return ((index >= 1538 && index <= 1541) || index == 1544);
}

/*******************************************************************************
* Function: GetPlayerID(name[])
* Description: The GetPlayerID return the id of a player by name
*******************************************************************************/

stock GetPlayerID(name[])
{
    if (strlen(name) >= 24)
        return INVALID_PLAYER_ID;
    new Name[16];
    for(new i; i < MAX_PLAYERS; i++)
    {
        GetPlayerName(playerid, Name, sizeof Name);
        if(!strcmp(Name, name, true))
            return i;
    }
    return INVALID_PLAYER_ID;
}

/*******************************************************************************
* Function: GetPlayerFromIP(ip[])
* Description: The GetPlayerIDFromIP return the id of a player through its ip
*******************************************************************************/

stock GetPlayerIDFromIP(ip[])
{
    if !( 7 <= strlen(ip) <= 15)
        return INVALID_PLAYER_ID;
    new IP[16];
    for(new i; i < MAX_PLAYERS; i++)
    {
        GetPlayerIp(playerid, IP, sizeof IP);
        if(!strcmp(IP, ip, true))
            return i;
    }
    return INVALID_PLAYER_ID;
}

/*******************************************************************************
* Function: ToUpperCase(string[])
* Description: The toUpperCase transforms the characters of a string from lowercase to uppercase
*******************************************************************************/

stock ToUpperCase(string[])
{
    new
	Len = strlen(string);
    for(new i; i < Len; i++)
        if('a' <= string[i] <= 'z')
            string[i] -= 32;
    return string;
}

/*******************************************************************************
* Function: ToTiny(string[])
* Description: The ToTiny has the inverse function of toUpperCase, transforms the characters of a string from upper to lower case
*******************************************************************************/

stock ToTiny(string[])
{
    new
 	Len = strlen(string);
    for(new i; i < Len; i++)
        if('A' <= string[i] <= 'Z')
            string[i] += 32;
    return string;
}

/*******************************************************************************
* Function: IsPrimeNumber(number)
* Description: The IsPrimeNumber see if a number is prime or not
*******************************************************************************/

stock IsPrimeNumber(number)
{
    switch(number)
    {
        case -1..1: return false;
        case 2, 3: return true;
    }
    if(!(number % 2) || !(number % 3) || !(number % 5))
         return false;
    new
        RoundSqrt = floatround(floatsqroot(number),  floatround_floor);
    for(new i = 5; i < RoundSqrt; i++)
        if(!(number % i) && (number != i))
            return false;
    return true;
}

/*******************************************************************************
* Function: RandomBetweenNumbers(...)
* Description: The RandomBetweenNumbers creates a random number between the brackets
*******************************************************************************/

stock RandomBetweenNumbers(...)
{
    if(!numargs())
        return -1;
    if(numargs() == 1)
        return getarg(0);
    new
        Num = numargs(),
        Random = random(Num);
    return getarg(Random);
}

/*******************************************************************************
* Function: RandomBetweenCharacters(...)
* Description: The RandomBetweenCharacters creates a random one of the characters within the brackets
*******************************************************************************/

stock RandomBetweenCharacters(...)
{
    if(!numargs())
        return ' ';
    if(numargs() == 1)
    {
        switch(getarg(0))
        {
            case 33..126, 128..254: return getarg(0);
            default: return ' ';
        }
   }
   new
       Num = numargs(),
       RandomArgs = random(Num);
   return getarg(RandomArgs);
}