List of available hooks:

ctx.hook.on_world_initialized() - called on OnWorldInitialized.
ctx.hook.on_world_update() - called on OnWorldPreUpdate.
ctx.hook.on_world_update_client() - called on OnWorldPreUpdate, but only on clients.
ctx.hook.on_world_update_host() - called on OnWorldPreUpdate, but only on host.
ctx.hook.on_new_player_seen(new_playerdata, player_count) - called the first time player with this peer_id has entered the world.
ctx.hook.on_local_player_spawn(my_player) - called when the local gets spawned. my_player is playerdata table for this player.
ctx.hook.on_client_spawned(peer_id, new_playerdata)
ctx.hook.on_should_send_updates() - called either when we connect, or somebody else connects (and sends "welcome" message).
ctx.hook.on_draw_debug_window(imgui)
ctx.hook.on_local_player_polymorphed(currently_polymorphed)
ctx.hook.on_client_polymorphed(peer_id, player_data)
ctx.hook.on_late_init() - called on OnModPostInit.