[Snoopythekill]

Hello

How can i create a vehicle at a specific distance in front of another vehicle in a straight line ?

How can I create a vehicle at a specific distance in behind of another vehicle in a straight line ?

Don't know much about float variables and manipulation on them, what I want is to create a vehicle in front or behind of another and both must look to the same place(Angle).

[Evocator]

Код:

stock GetXYInFrontOfVehicle(vehicleid, &Float:x, &Float:y, Float:distance)
{
    new 
        Float:a;

    GetVehiclePos(vehicleid, x, y, a);
    GetVehicleZAngle(vehicleid, a);

    x += (distance * floatsin(-a, degrees));
    y += (distance * floatcos(-a, degrees));
}

stock GetXYBehindVehicle(vehicleid, &Float:x, &Float:y, Float:distance)
{
    new 
        Float:a;

    GetVehiclePos(vehicleid, x, y, a);
    GetVehicleZAngle(vehicleid, a);

    x -= (distance * floatsin(-a, degrees));
    y -= (distance * floatcos(-a, degrees));
}

Creating vehicle infront of the other:

Код:

GetVehiclePos(vehicleid, X, Y, Z);
GetXYInFrontOfVehicle(vehicleid, X, Y, 10.0);
CreateVehicle(.., X, Y, Z, 90.0 ...

Creating vehicle behind the other:

Код:

GetVehiclePos(vehicleid, X, Y, Z);
GetXYBehindVehicle(vehicleid, X, Y, 10.0);
CreateVehicle(.., X, Y, Z, 90.0 ...

[Snoopythekill]

Thanks, does not work, Perhaps this evil my code .

PHP код:


CMD:front(playerid, params[])
{
    new Float:pos[4], Float:fX, Float:fZ;
    GetVehiclePos(GetPlayerVehicleID(playerid), pos[0], pos[1], pos[2]);
    GetVehicleModelInfo(GetPlayerVehicleID(playerid), VEHICLE_MODEL_INFO_SIZE, fX, pos[3], fZ);
    GetXYInFrontOfVehicle(GetPlayerVehicleID(playerid), pos[0], pos[1], pos[3]);
    CreateVehicle(411, pos[0], pos[1], pos[2], pos[3], random(126), random(126), (60*60), 0);
    return true;
}
CMD:behind(playerid, params[])
{
    new Float:pos[4], Float:fX, Float:fZ;
    GetVehiclePos(GetPlayerVehicleID(playerid), pos[0], pos[1], pos[2]);
    GetVehicleModelInfo(GetPlayerVehicleID(playerid), VEHICLE_MODEL_INFO_SIZE, fX, pos[3], fZ);
    GetXYBehindVehicle(GetPlayerVehicleID(playerid), pos[0], pos[1], pos[3]);
    CreateVehicle(411, pos[0], pos[1], pos[2], pos[3], random(126), random(126), (60*60), 0);
    return true;
} 


[Vince]

pos[3] is not the vehicle's angle, it is its length. Use normal variables to avoid confusions like that. Arrays, while more compact, are also slower for stuff like this.

[Snoopythekill]

Does not work, if anyone can give me an example of use with this code I thank you, the vehicle is created in the same position.

PHP код:

CMD:Front(playerid, params[])
{
    new Float:fX, Float:fY, Float:fZ, Float:fD, Float:fA;
    GetVehicleModelInfo(GetPlayerVehicleID(playerid), VEHICLE_MODEL_INFO_SIZE, fX, fD, fZ);
    GetVehicleZAngle(GetPlayerVehicleID(playerid), fA);
    GetVehiclePos(GetPlayerVehicleID(playerid), fX, fY, fZ);
    GetXYInFrontOfVehicle(GetPlayerVehicleID(playerid), fX, fY, fD);
    CreateVehicle(strval(params), fX, fY, fZ, fA, random(126), random(126), (60*60), 0);
    return true;
} 


Edit: The functions are working correctly, the mistake was mine when attempting to get the size to a vehiculoid when the parameter is modeloid. Thanks to Ralfie and Vince +REP.