#100DaysOfCode in Python Transcripts
Chapter: Days 97-99: Building JSON APIs
Lecture: Introducing our online game server
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Welcome to Day 97.
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Michael again here with you and we're going to bring
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a bunch of things together that we've previously done
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and what I think is actually a really cool way
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of pushing and combining what you know.
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So we're going to build an online game.
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And it's going to be a multiplayer game,
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not multi-interactive real time game,
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but multiple players from multiple places
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log in and play this game online
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and you get things like high scores,
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who's won the most games, active players, things like that.
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And what's really cool is you basically
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already know like 80% of what you need to do this.
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The final bit we're going to put together here
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with a little bit of APIs and Flask.
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Online games are fun, right?
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Here's a cool one, Eve Online.
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This is actually powered by Python on the backend
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in some really, really important ways
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and it's this MMO, massively multiplayer online game.
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And I actually interviewed the guys from Eve
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over on Talk Python in Episode 52
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if you want to learn about that.
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That's all pretty interesting.
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So we're going to build an online game.
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Now, it's not as amazing as this, right?
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This is incredibly cool, taking hundreds of people
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working on it for a really long time.
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But let's see what we have and how we can piece it together.
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So over here, on Days 13, 14, and 15,
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we talked about text games.
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And the thing we actually built
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was a Dungeons & Dragons wizard game.
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Remember that?
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It was a long time ago, I know,
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but that was one of the first things we built.
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It was really fun, we learned about classes and so on.
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We also discussed this 15-way Rock Paper Scissors.
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And we've come back to this 15-way Rock Paper Scissors
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several times so we're going to do that again today
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for the thing we're going to build together.
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You don't necessarily have to build that one.
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Actually you probably won't build that one yourself
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but that's the one we're going to build together.
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What else do we have?
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Well, we saw that we can consume structured APIs
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with Uplink, recall this?
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We actually went to our movie search service
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and created this Uplink client
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to communicate with that and we're going to again
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use Uplink to build the client side,
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the playing the game side, the user side of this app.
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Not the service side but consuming the service side
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stuff that we build.
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So Uplink's coming back, that'll be fun.
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On Day 76, Julian told us all about Flask
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and how simple and easy it is to get started.
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We're going to take our Flask knowledge
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and use Flask as the web framework for hosting
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our application that is our game server.
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It has the various operations that we need to use
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in order to make our client applications run.
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Finally and really, really importantly, we have databases.
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In order to scale out our server,
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make it survive reboots and all sorts of stuff,
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we need to save our data and have data integrity
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across the various requests and executions
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of our web server.
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So we're going to use SQLAlchemy.
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In fact we're going to use already the exact same model
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that we already added here.
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So over in our demo recall we built
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our persistent Rock Paper Scissors.
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So we're going to take our persistent Rock Paper Scissors
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and convert it to a server side version
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and use the database to keep that information
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going back and forth and then we're going to write
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a little client to use it, that way everybody
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plays on the same server, we have all the shared data
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about who's played what, what were the history high scores,
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things like that.
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I hope you see that we have all the pieces
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with the exception of building just the API methods
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which turn out to be pretty simple in Flask
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if you're not trying to do too much.
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It's going to be an ambitious 3 days
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but we can do it and it's going to be super rewarding.
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So let's get started.
