.:: Bots United ::. - About the VISTABLE

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- - About the VISTABLE (http://forums.bots-united.com/showthread.php?t=3582)

About the VISTABLE

I want to ask is there a way to save somewere this vistable because on the bigger maps while this vistable is initializated the lag of CS is very big. In this way the vistable will be loaded from a file and will not lag CS. And some other question - For what is this vistable? What it actualy do? I still don't understand for what is and how to use it in the E[POD]bot coding.

Re: About the VISTABLE

hm, just calculate the vistable when adding the waypoints and then store it with your waypoint file ... havnt had lagging problems that way.

you can use the vis table to find cover places, for supressing fire, for guarding locations, etc. pp.

It's quite useful to have a nice bitfield class here, you might wanna look that up in the joebot xp sources.

Re: About the VISTABLE

Do you mean visdata? Visdata is a bit field that shows what is and is not visible from any given leaf. You need it.

Re: About the VISTABLE

I think he's not referring the the visdata in the bsp, but to vistables for waypoints

Re: About the VISTABLE

That's the first thing I changed when I've been working on podbot. I added code to save/load the waypoint vistables inside a separate file (this was not to alter the waypoint format). Maybe Splorygon even improved stuff since. Anyway, look in the pod-bot_mm source code, I'm sure you'll find tons of interesting stuff for you :)

Re: About the VISTABLE

well I changed it to calculate the Vistable at the map start (just when the ServerActivate() is called) at once, not "sliced" like Count Floyd has been doing.

Re: About the VISTABLE

Thanks you guys. I will try to do what I can. But I still don't understand how to use this vistable. Can you give me examples whit C++ code to see how actualy to use the vistable.

Re: About the VISTABLE

A little code snippet from detecting where supressing fire could be put on. This could of course be done using thousands of traceline, but this'd for sure cause lags.

Code:

// look if we can see some of the nearby waypoints to the enemy

g_Map.m_Waypoints.setDistanceMask(&BFNearEnemy,1,350,p->m_VOrigin);

// dont take the waypoints which are less than 250 units away

g_Map.m_Waypoints.setDistanceMask(&BFNotNearBot,1,250,m_pBot->getOrigin());

BFNotNearBot.negate();

// take only visible waypoints from here

g_Map.m_Waypoints.setVisibleMask(&BFVis,m_pBot->m_iNearestWP);

BFNearEnemy &= BFVis; // everything that's near to the enemy and visible to us

//g_Map.m_Waypoints.broadenMask(&BFNearEnemy);

BFNearEnemy &= BFNotNearBot; // everything that's far enough from me

long lShootAt = BFNearEnemy.getSet(); // get the first suitable waypoint ... randomizing this would be fine too

or to search a waypoint suitable for guarding the bomb

Code:

g_Map.m_Waypoints.setVisibleMask(&BFBVisible,iNearBomb);

g_Map.m_Waypoints.setVisibleMask(&BFPVisible,m_pBot->m_iNearestWP);

g_Map.m_Waypoints.setDistanceMask(&BFBNear,1,450,pGoal->m_pPerceipt->m_VOrigin);

// search only the waypoint which are visible to the bomb and to the bot

// if you would just search the best waypoint in the view of the bomb,

// you would have sometimes more than one bot near a waypoint, this way

// they may guard the bomb from more than one side

BFBVisible &= BFPVisible;

BFBVisible &= BFBNear;

// search the waypoint with the least visible waypoints around

// only those which are marked in the bitfield

iDestination = g_Map.m_Waypoints.getMaximum(&BFBVisible,CWaypointGraph::WG_SEARCH_AVDISTVWP,-1);