.....
new Float:x, Float:y, Floatz;
GetPlayerPos(playerid, x, y, z);
GetXYInFrontOfPlayer(playerid, x, y, 3.0);
z+= 3.0;
....
GetXYInFrontOfPlayer(playerid, &Float:x, &Float:y, Float:distance)
{
new Float:a;
GetPlayerPos(playerid, x, y, a);
GetPlayerFacingAngle(playerid, a);
if (GetPlayerVehicleID(playerid))
{
GetVehicleZAngle(GetPlayerVehicleID(playerid), a);
}
x += (distance * floatsin(-a, degrees));
y += (distance * floatcos(-a, degrees));
}