Conway's Game of Life, in Minecraft!

With this datapack, you can run the classic "cellular-automaton" Life, on any flat/horizontal black_concrete surface!

Based on the Life datapack by Ysics. Using that as a base, I've reworked and updated the code, as well as added a bunch of new features, and made it more multiplayer compatible.

Commands:

/function life:givetool	Gives player a special tool to toggle life cells on/off. You'll need this.
/function life:start	Starts running the simulation based on the current board configuration.
/function life:stop	Stops/pauses the current simulation.
/function life:reset	Resets/clears all simulation areas, and gen count.
/function life:stepsim	Advance the simulation 1 step at a time.
/function life:showgen	Shows the current generation count.
/function life:speed/1-4	Controls sim speed, default is 2. (1 is fastest, 4 is slowest.)
/scoreboard players set #nlife nlife.maxEnts 5000	Use this if you'd like to change the entity limit. (Default 5000, prevents crashing for me.)

How to use:
Build or /fill a flat horizontal surface with black_concrete, any shape or size can work, just make sure it's large enough for the patterns you want to run. Bonus: Have Minecraft generate a flat-map made of black_concrete, for a simulation without edges!
Next, type "/function life:givetool" to receive a Life Tool, you'll need this to create/edit patterns on the simulation board. Holding the tool also displays the current generation count, when the simulation is running. Right-click on the black_concrete with this tool to toggle cells on/off, and draw patterns.
Finally, type "/function life:start" to run the pattern you drew!

I've also included several structure files, containing patterns which I find interesting, but are hard to build from memory. They can be placed using a structure_block in load mode with "Include Entities" turned On. Use the "bounding box" to line the structure up with an existing black_concrete simulation area. Careful with "spacefiller2", it's the reason I added the entity limit. ;)