Hi, i am using c_scan to search in a con for player but i encountered 2 problems. 1st c_scan goes through walls and i can't use c_trace coz c_trace can't search in a con so how to stop c_scan searching through walls?
2nd c_scan stops searching when found closest entity in it's way so how to find all entities in it's range?
Thank you

1st: trace back from the detected entity to the scanning entity to determine if there´s a wall.

2nd: Use EVENT_DETECT

i will be very thanksfull if u provide an example thank you.

I guess something like this:
if(c_scan(my.x,my.pan,vector(120,0,200),IGNORE_ME|SCAN_ENTS) != 0)
{
if(you!=NULL)
{
c_trace(you.x,my.x,IGNORE_ME|USE_BOX);
if(trace_hit){see_player = 0;}else{see_player = 1;}
}
}
Not sure that this will work (I can't think properly with my sick head ), but you can catch an idea...

@3run i did the same but i don't want to use 2 slow funcs at same time.

@fogman reply please

This one works for sure! Even if it looks a bit weird (there is a better way to detect objects with C_SCAN).
You can download an example when I tried to make auto-aiming thing for FPS.
Here:
Download link

but you again used both c_scan and c_trace to acomplish it. I was wondering if it can be done with one of them only?

Short answer - no. First use a scan, than do a trace to be on the safe side.
The example of 3run should get you started.

you don't want to use 2 slow functions at one time....
they aren't that slow
also, the c_trace is only executed when an entity is found,
and you can have hunderds of c_traces in a ms.
also, you only use it for the player, not for many entities.

you could also run thourgh all entities manually, and compare their distance to the player. I don't know if that is faster....
I think you should go for the c_scan+c_trace combination. it can't be that bad!

and what about the second issue? I have 2 enemies standing near each other and search nearest cover position 1st enemy go to nearest cover and i set cover's flag1 on to let others it is occupied but since the 2nd enemy is using c_scan which returns the already occupied cover though i told it not to look for flag1 ents. But it dont work.