Hungry snake :(

Devlog #4

Sadly there’s no apple yet so the snake is getting pretty hungry.

The snake moves!

I made the snake finally able to get longer than 1 segment through a circular style array for keeping track of the head. This means that there is an array for all the segments that store the X and Y, and the head slithers through the array overwriting the tail segment so that you don’t need to copy the whole array forward every time the snake moves.

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Copy problems

With this way of implementing the snake, you need to shift forward all the segments in front of the snake’s head in memory so that it creates a free space in front of the head, and so the head can move into the free space instead of overwriting the tail.

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It’s a pretty simple concept, but I had a lot of trouble enacting this in assembly. Having to think about individual bytes isn’t something I’m used to from having data types handled automatically by higher level languages like C.