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[gilder]

There isn't much information about making fake players (visible ones). Only thing than i found helpful was bak's and smong's drone codes. Those modules got plenty of code with player locating other luxuries. As not so pro programmer, it is hard to understand the main point of making those fakes.

So, I think this thread would be helpful for starting coders to have fun with fake players.

With the fake interface you can create the fake, but making the fake move and shoot, needs packet editing and that caused problems.

Code: Show/Hide         arenadata->fakeplayer=fake->CreateFakePlayer("<Fake Player>", arena, SHIP_WARBIRD, 0);         pos->type = C2S_POSITION;         pos->rotation = 0;         pos->x = 500;         pos->y = 500;         pos->xspeed = 0;         pos->yspeed = 0;         pos->status = 0;         pos->bounty = 0;        pos->weapon.type = 0;        pos->weapon.level = 1;        pos->weapon.shraplevel = 1;        pos->weapon.shrap = 0;        pos->weapon.alternate = 0;            game->FakePosition(arenadata->fakeplayer, pos, 22);

That was my first hopeless try, that "suprisingly" crashed the zone.

How often FakePosition needs to be called?
If you want to make the fake accelerate, do you need to calculate the new speed and position yourself?

Any useful information is welcome.
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Hockey Zone

[Bak]

anywhere from 20 times a second to 4 times a second should work (use timers)

yes, you need to do the calculations yourself.
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SubSpace Discretion: A Third Generation SubSpace Client

[Smong]

It might be crashing if you didn't assign a value to pos properly.

I would recommend editing autoturret.c, look at mlfunc and comment out the weapon firing, target lock, etc.

Generally you should send positions around 10-20 ticks (depends on Misc:SendPositionDelay setting), but it also depends on how the ship is moving.
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ss news

[gilder]

I have had some lag problems with fakes. When i make the fake, i can't see the fake move for about 2 seconds. If refresh rate is 10cs, fake is moving smoothly after that spike. With 5 centiseconds, it keeps spiking.


Creation:

Code: Show/Hide         arenadata->update = current_ticks();                 arenadata->fakeplayer=fake->CreateFakePlayer("<Fake>", arena, SHIP_WARBIRD, 0);         pos.type = C2S_POSITION;         pos.rotation = 0;         pos.x = 500*16;         pos.y = 520*16;                 arenadata->x = (double) pos.x;         arenadata->y = (double) pos.y;                    srand(time(NULL));                      pos.xspeed = -100 + rand() % 200;         pos.yspeed = -100 + rand() % 200;                         pos.status = S_PLAYING;         pos.bounty = 0;        pos.weapon.type = 0;        pos.weapon.level = 1;        pos.weapon.shraplevel = 1;        pos.weapon.shrap = 0;        pos.weapon.alternate = 0;                      game->FakePosition(arenadata->fakeplayer, &pos, 22);

Refresh function:

Code: Show/Hide         int update = current_ticks() - arenadata->update;         arenadata->update = current_ticks();                 struct C2SPosition pos;                 pos.type = C2S_POSITION;                 //pixels         arenadata->x += ((double)arenadata->fakeplayer->position.xspeed * (double)update/100.0);         arenadata->y += ((double)arenadata->fakeplayer->position.yspeed * (double)update/100.0);                 pos.x = (int)arenadata->x;         pos.y = (int)arenadata->y;           //pixels per second         pos.xspeed = arenadata->fakeplayer->position.xspeed;         pos.yspeed = arenadata->fakeplayer->position.yspeed;                 pos.status = S_PLAYING;         pos.bounty = 1337;            pos.weapon.type = 0;        pos.weapon.level = 1;        pos.weapon.shraplevel = 1;        pos.weapon.shrap = 0;        pos.weapon.alternate = 0;            // Rotate the fake         if(pos.xspeed==0)         {             if(pos.yspeed >= 0) pos.rotation = 0;             else pos.rotation = 20;         }         else if(pos.yspeed == 0)         {             if(pos.xspeed<0) pos.rotation = 30;             else pos.rotation = 10;         }         else if(pos.xspeed > 0 && pos.yspeed > 0)             pos.rotation = 20.5 - atan((double)pos.xspeed/(double)pos.yspeed)*40.0/2.0/pi;         else if(pos.xspeed > 0 && pos.yspeed < 0)             pos.rotation = 0.5 + atan((double)pos.xspeed/-(double)pos.yspeed)*40.0/2.0/pi;         else if(pos.xspeed < 0 && pos.yspeed > 0)             pos.rotation = 20.5 + atan(-(double)pos.xspeed/(double)pos.yspeed)*40.0/2.0/pi;         else if(pos.xspeed < 0 && pos.yspeed < 0)             pos.rotation = 40.5 - atan(-(double)pos.xspeed/-(double)pos.yspeed)*40.0/2.0/pi;                             game->FakePosition(arenadata->fakeplayer, &pos, 22);

[Dr Brain]

Don't use centiseconds, ever. Don't use centi anything except with meters.
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Hyperspace Owner

Smong> so long as 99% deaths feel lame it will always be hyperspace to me

[gilder]

I feel more comfortable with millis too, but decided to use centi, because many asss times are in centiseconds. SetTimer for example.

This didn't solve the problem. Should i put some more info to the position packet when i call FakePosition?

[Smong]

For the time I call them ticks.

If you look at autoturret.c you can see each bots position is stored inside the TurretData struct, which each bot has. When enough time has passed a fake position will be sent using data directly from the pos struct, no need to copy it again:

Code: Show/Hide struct TurretData {    Player *p;    int interval, weapon;    ticks_t endtime, tofire, tosend;    struct C2SPosition pos; //<-- look here }; //global list of turret data (but you can make this per-arena if you feel you really must) local LinkedList turrets; //inside create_turret:    struct C2SPosition *pos;    struct TurretData *td = amalloc(sizeof(*td)); ...    pos = &td->pos;    pos->type = C2S_POSITION;    //blah blah more initialisation of the pos ...    LLAdd(&turrets, td); //inside mlfunc:    for (l = LLGetHead(&turrets); l; l = next)    {       struct TurretData *td = l->data; ...       else if (TICK_GT(now, td->tosend))       { ...          //you must update the pos's time to the current time before "sending" it          td->pos.time = now; ...          //here you can stick your math calculations          td->pos.rotation = ... ...          game->FakePosition(td->p, &td->pos, sizeof(td->pos));

Also note in autoturret.c positions are only sent from the mlfunc, not when the bot is being created.