Test showing profiles that are in this thread. Position in the map can be set as a profile attribute (nostr-space-pos: {"x": x,"z":z})
hahahahahahahahahahah doing some tests with nostr at https://nostr-space.on.fleek.co/ . Check the empty world become populated with nostr profiles
Will try to continue soon
Discussion
"nostr-space-position" is a tag now, kind 1 as answer to the first post;
kind 0 is loaded as profile, your npub is converted to bytes to have its position;
kind 7 (reactions) "materializes" antimatter particle (red sphere in high velocity that kills if touches you;
kind 40 (channel creation) is showed as "black hole" (giant black sphere that kills you if you go there);
Shoots and movements at kind 29211 (ephemeral) with their tags ("nostr-space-movement" and "nostr-space-shoot")