Visible Vehicles

#include <a_samp>

#define FILTERSCRIPT

public OnPlayerCommandText(playerid, cmdtext[])
{
    if(!strcmp(cmdtext, "/autos visibles", true)){
        new v, str[128], count;
        for(; v<MAX_VEHICLES; v++){
            if(GetVehicleModel(v) && IsVehicleStreamedIn(v, playerid) && IsVehicleInPlayerScreen(playerid, v)){
                if(count)format(str, 128, "%s||%i", str, v);
                else format(str, 128, "%i", v);
                count++;
            }
        }
        return SendClientMessage(playerid, -1, (count) ? (str) : ("No se encontraron vehiculos."));
    }
    return 0;
}

stock IsVehicleInPlayerScreen(playerid, vehicleid)
{
    static Float:P[3], Float:vP[3], Float:Dist;
    GetPlayerPos(playerid, P[0], P[1], P[2]);
    GetVehiclePos(vehicleid, vP[0], vP[1], vP[2]);
    if(vP[2]-P[2]>15.0 || P[2]-vP[2]>15.0)return 0;
    Dist = floatsqroot(floatpower((P[0]-vP[0]), 2)+floatpower((P[1]-vP[1]), 2)+floatpower((P[2]-vP[2]), 2));
    if(Dist>100.0)return 0;
    static Float:cV[3], Float:cP[3], Float:T[3], Float:Ar;
    GetPlayerCameraPos(playerid, cP[0], cP[1], cP[2]);
    GetPlayerCameraFrontVector(playerid, cV[0], cV[1], cV[2]);
    T[0] = cV[0]*Dist+cP[0];
    T[1] = cV[1]*Dist+cP[1];
    T[2] = cV[2]*Dist+cP[2];
    if(vP[2]-T[2]>10.5 || T[2]-vP[2]>10.5)return 0;
    if(Dist<7.0)return 1;
    Ar=atan2((P[1]-T[1]), (P[0]-T[0]));
    if(Ar-42.0<(atan2((P[1]-vP[1]), (P[0]-vP[0])))<Ar+42.0)return 1;
    return 0;
}