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[Helios101]

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[eXpl0it3r]

The genius thing about Snake is, that you don't have to move all the blocks every time. It really doesn't matter whether block 4 remains block 4 or if it will be block 5 later on.

All you essentially need to care about when moving the snake is, removing the tail (last block), moving the head and adding a new element behind the head. All the in-between parts never need to move.

To change direction, you simply move the head in the given direction and add a new block where the head was before, it's very simple. But it's best to use a std::deque so you can work on both ends.

[Nexus]

Exactly. Every segment except for the first and the last remain the same when you update the snake. Essentially, the update step then becomes:

• Pop last segment (tail) from deque
• Push new segment (head) to front

And you should iterate with iterators and not indices, because it's more generic and faster (for std::deque).