Spectator map view is very laggy with high no. of units

[gienkov]

ACE3 Version: 3.3.1

Mods:

• @CBA_A3
• @ace

Placed ACE3 Modules:

• Spectator

Description:

• On mission when there was over 200 units on map switching to map view while spectating lowers FPS to very low values (around 3-9). It may be cause of drawing unit markers in real time (no delay?).*

Steps to reproduce:

• Enter map view while spectating on mission with high amount of units.

Where did the issue occur?

• "Multiplayer"*

RPT log file:

[kymckay]

I think the only way to alleviate this is some sort of compromise.

Possible idea: Only draw AI units in vicinity of the camera and then all player units.

[gienkov]

Maybe just don't draw each icon per frame as PFH is used on each one. You have 100 spectatable units - 100 PFHs - frame's drop. You don't need such precision for spectator so updating map markers let's say every 1 second could be way better and that's how other spectator scripts I used were working.

[jokoho48]

or every frame one unit

[kymckay]

Dude what, I don't have 100PFHs running 😆 It uses the map "draw" event

You need to draw the icons every frame otherwise there wouldn't be any icons

[gienkov]

Maybe draw each unit marker only if you zoom enough? Otherwise only whole group marker.

[kymckay]

That's not a bad idea! 😄 👍

[kymckay]

Wonder what the best way is to check which units are currently on-screen on the map

[commy2]

distance of the current center of map converted to world coordinates combined with current map zoom?

[PabstMirror]

Maybe something like this, untested. I forget if it's faster to check allUnits + vechicles or do a nearEntities scan.

_center = _mapCtrl ctrlMapScreenToWorld [0.5,0.5];
_radius = (_mapCtrl ctrlMapScreenToWorld [safeZoneX,safeZoneY]) distance2d _center;
{
    if ((_x distance 2d _center) < _radius) then {
    draw
    };
} forEach allUnits;

[commy2]

(allUnits + allDeadMen to include dead units)

[kymckay]

We can use the array of spectatable units (or the corresponding group one - used to cut down on number of iterations for icon related stuff) anyway 😄

GVAR(unitList)
GVAR(groupList)