[Kenway]

What this code do?

Код:

new Float:x, Float:y, Float:z;
GetPlayerCameraFrontVector(playerid, x, y, z);
#pragma unused x
#pragma unused y
if(z < -0.8) 
{
     SendClientMessage(playerid, -1, "Good");
}

[DaRk_RaiN]

pawn Код:

new Float:x,Float:y, Float:z;//We are defining the floats here, we will use them on the next line
GetPlayerCameraFrontVector(playerid, x, y, z);//In here we are getting the x, y, z of the player's front vector

More info here and here.

pawn Код:

#pragma unused x
#pragma unused y

This means we will not be using the x and y of the player's front vector.
Read this.

pawn Код:

if(z < -0.8) 
{
     SendClientMessage(playerid, -1, "Good");
}

That code above will check in the player's front vector "z" is lower than -0.8.Then sends him the messsage.

[Kenway]

Thanks man! You helped me