pub fn split()Expand description
If the snake has a length of at least 9, it is eligible to split into two.
The snake is split into three parts (the middle is rounded up, the rest down). The first part will remain as
the original snake. The middle part will be lost and turn into poison. The end will become a new
snake. The snake runtime will be forked, and both new snakes will continue to run independently.
You can use get_id to determine which snake is now running.