This gets rid of the (substantial!) overhead of preparing a list and then iterating over it, in exchange for a bit of bookkeeping to simulate the prior behavior of the for loop, which is much cheaper.
Reviewed-on: #4
Co-authored-by: Kistaro Windrider <kistaro@gmail.com>
Co-committed-by: Kistaro Windrider <kistaro@gmail.com>
Some of these are pure token optimizations, some spend tokens for performance. Function calls are particularly expensive in Pico-8, so using the table form of `pal` whenever changing multiple colors seems worth it.
Also fixes a bug in palette swapping.
Reviewed-on: #3
Co-authored-by: Kistaro Windrider <kistaro@gmail.com>
Co-committed-by: Kistaro Windrider <kistaro@gmail.com>
