Sometimes in programming you might want to make small 'mini' games, so to speak, to run some test code, here's what our collision mini game looks like.
Sexy ain't it?
Each tile has HP, you can dig and the collisions and weight to the blocks are perfect.
Now to add a test ui and everything else.
A LOT goes on behind the scenes though, with a lot of complexity, I won't bore you guys too much.