Me and my dad play this one zombie survival game together (I can’t think of the name atm) and while doing so I noticed he kept picking up items I wanted and was about to pick up, I figured it was just cuz I didn’t bother to say anything so he didn’t know any better, until I started specifically running over to collect items, just for him to run in front of me and pick them up, I was upset since I had the proper materials in order to use those items, it wasn’t until I started to look over at him as he did it when I saw the large, smug smile on his face, he was doing this on purpose because he wanted to tick me off, because he found it funny, it was the last straw when I repeatedly told him about an item I wanted, and told him to wait until I made some room in my inventory so I could pick it up, he gave me the okay to start cleaning out my inventory, but as I was doing so he ran over and picked up the item, I looked over at him and he had the biggest grin on his face, and was chuckling as well, this is when I knew I wanted some revenge, we got to a horde of zombies and my dad asked if I was ready to start fighting, I eagerly replied “yep” but as soon as the fight began I decided to get my payback, once the zombies came pouring in I walked off to the side and left them all to him, he kept asking me to help and was wondering why I wasn’t doing anything, once he died he was obviously mad at me but I told him “sorry, just getting some payback” I died too of course since I didn’t have him to help me, once we were both dead he asked me “why weren’t you helping me???” And I calmly replied “you were making me mad” he rage quit and said he didn’t want to play anymore

TL;DR My dad was purposely ticking me off by collecting items I specifically said I was prepared to pick up (or in more blunt terms, calling dibs on) so I wanted to take some revenge by leaving him to take on an entire horde of zombies by himself which resulted in death (I died too either way)

AITA in this situation or is what I did justified? considering he was purposely trying to make me mad