How to get a random value from a multidimensional array?

How to get a random value from a multidimensional array? - Printable Version

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+--- Thread: How to get a random value from a multidimensional array? (/showthread.php?tid=541275)

How to get a random value from a multidimensional array? - Magic_Time - 10.10.2014

Hi, I have this:

PHP код:



new Float:TeamSpawns[][4][4] = {

{

    {1090.1176,1915.2543,10.8203,359.0264},

    {1093.6993,1905.3907,16.4873,2.1364},

    {1116.3743,1891.2225,10.8203,167.8679},

    {1092.0170,1892.6232,10.8203,182.2814}

},

{

    {-799.3118,1570.1510,27.0807,87.2953},

    {-819.4633,1499.2266,19.7184,179.7295},

    {-767.4883,1520.2850,26.7911,270.9103},

    {-721.7050,1538.5356,40.4757,93.5855}

}

};

I have this function:

PHP код:



stock SetPlayerRandTeamPos(playerid, team)

{

    new rand = random(sizeof(TeamSpawns[team]));

    SetPlayerPos(playerid, TeamSpawns[team][rand][0], TeamSpawns[team][rand][1], TeamSpawns[team][rand][2]);

    SetPlayerFacingAngle(playerid, TeamSpawns[team][rand][3]);

    return 1;

}

I get an error here:

PHP код:



new rand = random(sizeof(TeamSpawns[team]));

Respuesta: How to get a random value from a multidimensional array? - SickAttack - 10.10.2014

pawn Код:

new Float:TeamSpawns[][] = 
{ 
    {1090.1176,1915.2543,10.8203,359.0264}, 
    {1093.6993,1905.3907,16.4873,2.1364}, 
    {1116.3743,1891.2225,10.8203,167.8679}, 
    {1092.0170,1892.6232,10.8203,182.2814} 
    {-799.3118,1570.1510,27.0807,87.2953}, 
    {-819.4633,1499.2266,19.7184,179.7295}, 
    {-767.4883,1520.2850,26.7911,270.9103}, 
    {-721.7050,1538.5356,40.4757,93.5855}
};

stock SetPlayerRandomPos(playerid) 
{ 
    new rand = random(sizeof(TeamSpawns)); 
    SetPlayerPos(playerid, TeamSpawns[rand][0], TeamSpawns[rand][1], TeamSpawns[rand][2]); 
    SetPlayerFacingAngle(playerid, TeamSpawns[rand][3]); 
    return 1; 
}

Re: Respuesta: How to get a random value from a multidimensional array? - Magic_Time - 10.10.2014

Quote:

Originally Posted by SickAttack

pawn Код:

new Float:TeamSpawns[][] = 
{ 
    {1090.1176,1915.2543,10.8203,359.0264}, 
    {1093.6993,1905.3907,16.4873,2.1364}, 
    {1116.3743,1891.2225,10.8203,167.8679}, 
    {1092.0170,1892.6232,10.8203,182.2814} 
    {-799.3118,1570.1510,27.0807,87.2953}, 
    {-819.4633,1499.2266,19.7184,179.7295}, 
    {-767.4883,1520.2850,26.7911,270.9103}, 
    {-721.7050,1538.5356,40.4757,93.5855}
};

stock SetPlayerRandomPos(playerid) 
{ 
    new rand = random(sizeof(TeamSpawns)); 
    SetPlayerPos(playerid, TeamSpawns[rand][0], TeamSpawns[rand][1], TeamSpawns[rand][2]); 
    SetPlayerFacingAngle(playerid, TeamSpawns[rand][3]); 
    return 1; 
}

That's not right, I have a three dimentional array.

Respuesta: Re: Respuesta: How to get a random value from a multidimensional array? - SickAttack - 10.10.2014

Quote:

Originally Posted by Magic_Time

That's not right, I have a three dimentional array.

Yeah, but I made a two dimensional array.

I recommend that you create an array for each team, it will require less checking and looping through the information than everything in a single array.

Re: How to get a random value from a multidimensional array? - paulommu - 10.10.2014

I think you can't use sizeof on a multidimensional array.

You should do something like this:

pawn Код:

new Float: TeamASpawns[][4] = {
    {1090.1176,1915.2543,10.8203,359.0264},
    {1093.6993,1905.3907,16.4873,2.1364},
    {1116.3743,1891.2225,10.8203,167.8679},
    {1092.0170,1892.6232,10.8203,182.2814}
};

new Float: TeamBSpawns[][4] = {
    {-799.3118,1570.1510,27.0807,87.2953},
    {-819.4633,1499.2266,19.7184,179.7295},
    {-767.4883,1520.2850,26.7911,270.9103},
    {-721.7050,1538.5356,40.4757,93.5855}
};

Then use @SickAttack's example code.

Re: How to get a random value from a multidimensional array? - Magic_Time - 11.10.2014

Quote:

Originally Posted by paulommu

I think you can't use sizeof on a multidimensional array.

You should do something like this:

pawn Код:

new Float: TeamASpawns[][4] = {
    {1090.1176,1915.2543,10.8203,359.0264},
    {1093.6993,1905.3907,16.4873,2.1364},
    {1116.3743,1891.2225,10.8203,167.8679},
    {1092.0170,1892.6232,10.8203,182.2814}
};

new Float: TeamBSpawns[][4] = {
    {-799.3118,1570.1510,27.0807,87.2953},
    {-819.4633,1499.2266,19.7184,179.7295},
    {-767.4883,1520.2850,26.7911,270.9103},
    {-721.7050,1538.5356,40.4757,93.5855}
};

Then use @SickAttack's example code.

Yeah, I discovered how.

PHP код:



new rand = random(sizeof(TeamSpawns[]));

Re: How to get a random value from a multidimensional array? - SickAttack - 11.10.2014

Quote:

Originally Posted by Magic_Time

Yeah, I discovered how.

PHP код:



new rand = random(sizeof(TeamSpawns[]));

You can, but you don't need the brackets "[]".

Re: How to get a random value from a multidimensional array? - Magic_Time - 11.10.2014

Quote:

Originally Posted by SickAttack

You can, but you don't need the brackets "[]".

You don't understand what I want, you would if you'd look carefully at my array.

Here's something for you to understand.

PHP код:



sizeof(array) // First dimension

sizeof(array[]) // second dimension THIS IS MY CASE

sizeof(array[][]) // third dimension

I discovered how to fix my problem. Thanks for trying to help.

Re: How to get a random value from a multidimensional array? - SickAttack - 11.10.2014

Quote:

Originally Posted by Magic_Time

You don't understand what I want, you would if you'd look carefully at my array.

Here's something for you to understand.

PHP код:



sizeof(array) // First dimension

sizeof(array[]) // second dimension THIS IS MY CASE

sizeof(array[][]) // third dimension

I discovered how to fix my problem. Thanks for trying to help.

I already know but how do you expect me to know what you want if you don't even explain anything?

Quote:

Here's my code. Problem -> this.

Be more specific next time.