[DarK_FeneR]

Try with MapAndreas plugin:

pawn Код:

stock IsWaterInFrontOfPlayer(playerid, Float: range = 1.0)
{
    new Float:fPX, Float:fPY, Float:fPZ,
        Float:fVX, Float:fVY, Float:fVZ,
        Float:object_x, Float:object_y, Float:object_z;

    GetPlayerCameraPos(playerid, fPX, fPY, fPZ);
    GetPlayerCameraFrontVector(playerid, fVX, fVY, fVZ);

    object_x = fPX + floatmul(fVX, range);
    object_y = fPY + floatmul(fVY, range);

    MapAndreas_FindZ_For2DCoord(object_x, object_y, object_z);

    if(object_z <= 0.0) return true;
    return false;
}

Directly from my server code Lost Springs Roleplay (ITA)