[ANet] Sending only an element of an array struct

Posted By: alibaba

[ANet] Sending only an element of an array struct - 08/27/14 12:10

lets say i have a struct like this:
typedef struct {
var health;
var points;
...
}PLAYERSTRUCT;

And i declare and initialize it like this:
PLAYERSTRUCT Players[12];

Now i only want to send the health value of all 12 Players.
Do i need to do it in a for loop?

Or can i do something like this:
enet_sendto(Players.health,sizeof(var)*12,BROADCAST);

Posted By: WretchedSid

Re: [ANet] Sending only an element of an array struct - 08/27/14 12:19

Copy it into temporary buffer and send that buffer.

Posted By: alibaba

Re: [ANet] Sending only an element of an array struct - 08/27/14 12:29

The Problem is i�m using the Memory Registration Mode, this means i have to register all datatypes at the beginning so i don�t think i could register that temporary buffer at runtime.

Posted By: Ch40zzC0d3r

Re: [ANet] Sending only an element of an array struct - 08/27/14 13:45

Code:

for(int i = 0; i < 12; i++)
{
     pPlayer[i].points += 1;
     enet_sendto(&(pPlayer[i].points), sizeof(var), BROADCAST);
}

As simple as that

Posted By: alibaba

Re: [ANet] Sending only an element of an array struct - 08/27/14 14:06

This is what i tried to avoid, because with every send call you�ll send 7 bytes of unnecessary data.
This is why i asked for a solution with only one send call.

Posted By: Ch40zzC0d3r

Re: [ANet] Sending only an element of an array struct - 08/27/14 16:33

I guess if you dont want any unneeded overhead you need to write your own plugin :S
So if you really want to avoid that, you have to write an array for every element, such like:

Code:

int iScore[32];

Then your could will work for sure.
It cant work with a struct because the data is allocated in the same order, so you'd send the whole player array to achieve it.

Posted By: EpsiloN

Re: [ANet] Sending only an element of an array struct - 04/09/15 22:52

Don't get caught in the optimization trap.
If you're sending 7 unneeded bytes for 12 vars 15 times per second to 12 clients, you get unneeded 14 kbps. Is that really too much? And, if you update 5 times per second, which is enough for me, you get 4,5kbps...
My advice is, first, make your mechanics and features. Think about the optimization after that.

My laptop uploads with 5 to 15 mbps to my country and at least 256kbps worldwide (Its usually in the 512kbps-2mbps range)...