updated for mac arm and brew

[dioptre]

No description provided.

[isohedral]

Thanks for the proposed PR. Most of the changes are generally OK, but I have a couple of concerns.

• I would prefer for the licenses not to include your name as the copyright holder.
• I still use Macports, not homebrew, so it would be good if the code could be built on top of either. The canonical solution would be a smarter build system, e.g., cmake. But I don't have the time or expertise to create that. A compromise would be multiple different makefiles.
• I don't know where your images came from, and need to know that I have permission to include them.
• I don't see any changes to the source code (what was updated for "mac arm"?).

[dioptre]

Ok no worries, we can leave this here for people using brew.
1 & 3. the images come from a site https://opengameart.org/textures/all that requires one of them to be cc-by-..... and the license is from that
2. i was just trying to get it going - so might leave that there
3. mac arm is supported by brew and x86 - i was thinking it was broken due to an x86 thing