Snoop had nothing to do with Pac's murder but he along with the Dogg Pound did look pretty funny hanging out with Puffy and the Bad Boy crew in LA in early 97 before the Soul Train Awards. I understand Snoop wanting to go straight and positive after his murder trial but that was foul for him to call Biggie and Puffy his homies knowing that Pac had beef with them, knowing that Biggie going on the radio and almost getting him and his crew killed in New York, and laughing and cheesing at the House of Blues while Pac going in about Biggie, Puffy, Faith, etc.
I think Snoop was jealous of Pac but not jealous enough to want him dead or harmed. From 1993 until 1996 Snoop Dogg was clearly the man on Death Row and pretty much the west in general. Everything revolved around him. 2Pac coming to Death Row changed everything, good and bad. With Pac coming in he became the man and pretty much had Suge's ear.
At the end of the day I got love for 2Pac and he's tied with Nas as my favorite rapper of all time but his actions and mouth got him killed. He was a loyal dude and Suge and the Piru's played on his loyalty which ended up getting him killed. Pac had no business running up on Orlando Anderson like that. That wasn't his beef but being a loyal dude he felt he had to make it his beef. I read in Frank Alexander's book that in the weeks/months leading up to his death 2Pac and the Outlaws were wilding out getting in fights with people. Dude was rapping about his own demise and making hundreds of songs like he knew he wasn't going to live long. He basically spoke and lived his death into existence.