Had a funny interaction last night with a guy using esp or something.

Was playing last night with a buddy and got into a firefight with this squad where we were fighting for a while with them in this street. Me and a buddy killed them eventually and as I was hunkered down in a building waiting for my hp to tick back up, then i went to exit the building. When i did, bullets started flying by the door just before i went through. But looking at the map, no allies were in the line of fire. So i was like, wait, is he shooting at me? I've been sitting in this building for a good 30 seconds chilling and talking with my buddy about our next move, i shouldn't be spotted right now, and even if i was, it's some wild timing to watch the mini map for just the exact moment i am about to peak out. So i started testing. I backed up and bolted like i was about to run, and sure enough, when i was about two feet from the exit, bullets started going again. Did this three more times and each time just before i ran out, they started shooting. So i got curious and decided to actually peak to see where they were at. Ran out, got hit like once maybe twice, and ran back in. But sure enough, i spotted the guy, sitting in a window, at about a 90 degree angle from my buildings door, meaning there was no possible way they could see into the building, and they were a good 50+ meters down the road. I even went the other way to flank, juuust to be sure, and sure as shit, just before i rounded the corner that would put me in sight of him, bullets start whizzing on by again from his location. Thought it was pretty funny how blatant the guy was being. Said as much in chat, and one guy on the enemy team got REAL accusatory and defensive about it when i said "be less blatant with the pre-firing" lol.