Sep 23

Oh, It’ll Be Out By….

Hmm, even now as I look back on what’s been done on Outwitters, I’ve learned a *ton* of new things in regards to game development. I’m not too excited about having only 1 game to release this year (if we even make *that*). Hell, we even planned on having 2 games a year. The take-away from that is game development is not an assembly line process. Going into Outwitters I:

  1. Never coded a turn-based strategy game before
  2. Never worked on an asynchronous game before
  3. Never worked with Google App Engine
  4. Didn’t use unit testing prior to this game
  5. Never worked with push notifications
  6. Never worked fully in C++ in a commercial project before
  7. Knew little of JSON and it’s benefits
  8. Hadn’t used Actionscript to the capacity that I am now
  9. Haven’t touched Python since freshmen year of college (omg I love python again)
  10. …and several others

Looking at just that list above, which isn’t even scratching the surface, it was dumb to think I could predict *any* sort of release date prior to starting this project. Unless you’re phoning it in game after game, or the game has a very small scope, or you just have many years of broad experience working on several different kinds of games, platforms, and genres, scheduling is almost silly to think about. Having only been doing this for a couple years, I’m far from the “broad experience” category. There are a few constants in game dev, such as getting your boiler plate code, foundation, or engine ready to go, or a super basic prototype up and running, but beyond that it’s just a hazy mess for me at the moment.

The great thing is now I know a decent amount of everything on that list. If we were to do another asynchronous TBS game for iOS, scheduling would be far less hazy. But that’s the dilemma. I sure as hell won’t want to dive into another “Outwitters”-like project after this for a while. I get excited about new games and new ideas (most involving multiplayer to boot). I’m interested in things I haven’t tried before, and as a result, they’ll always be difficult to estimate length of development, but the challenge is what makes it fun for me. Even if we were to revisit a previous game and make a follow-up, I would want to add or change something about it that would make it unique, because that game is already a “solved problem” and is pretty much just grunt work from start to finish with little thought involved.

Outwitters Battle Report

This week I finished up implementing custom games into Outwitters. Outwitters was designed to be played with friends, so it’s kind of weird having this feature come online so late in the game. Our Leagues and Ladders system works with 1v1, but we wanted to make sure to have 2 vs 2 in there as well so you can still take on the world with a buddy. Things are always more fun with a friend in tow :) . Custom games are just a way for players to create their own games with their own settings. They can choose who is in the game, who is on what team, and the map. The league system tends to take over a lot of those choices to make things a bit more ‘standard’. Wins and losses don’t count in custom games, so it’s a nice place to try out strategies or just play with friends casually.

Speaking of leagues, the matchmaking and ranking system is finally online as well. It’s not too interesting to look at yet since the player numbers are still very low. At least not my profile, since i have zero points and can’t win a game to save my life. I’m apparently strategically challenged when it comes to these games. Probably explains my horrible performance in Starcraft 2. I tend to be impatient and like to throw my army away like lambs to the slaughter when the engagement heavily favors the opponent instead of me. Oh well, there’s always Battlefield :D .

Sep 9

This following post is probably going to be useful to an extremely niche audience: anyone developing a multi-user iOS app that has a GAE backend. I'm currently working on Outwitters and debugging turn-based games on the local dev server (dev_appserver.py) is really quick and painless. The problem arises from the nature the game. It's a multiplayer game, and as such, requires multiple users to function. You can only go so far with creating 'mock user' accounts, and fake data populating your local server. With each build I always find some sort of issue that the alpha testers stumble across that may not be server-related but the gamestate that the "production" server is holding is something I want to grab and debug with locally. Wouldn't that be nice?

So when you run a local dev server the command is pretty simple:

dev_appserver.py pathToCode

Not bad. Now if you want to access it on your machine you simply do an http request to localhost:8080. The problem comes in when you're developing for a mobile device. The dev server is no longer at localhost but on some local LAN IP. That's a pretty easy fix too:

dev_appserver.py --address 192.168.1.x pathToCode

Now in your iOS app you can send requests to a local server. We're in business, awesome! So you want to download the data from your hosted application over at appengine.google.com? Pretty simple. Uploading it is pretty straightforward to if you use the --url option with "appcfg.py upload_data".

Now this is where I ran into problems, and I couldn't find a clear cut answer as to why uploading data to my local dev server was simply not working. It would ask for credentials, and no matter what I put, it would fail. Hopeless. I used all sorts of combinations of my local address and ports for the --url flag for appcfg.py and tried countless combinations of any of my known logins for both appengine and my local dev machine. I then decided to go back to basics, and follow their instructions exactly. I downloaded the production data as documented. Then I launched a clean dev server with no command line options. It worked as advertised! I had all the data frolicking about inside my dev server, but I couldn't access it with any of my iOS devices. Without the address option, the dev server would launch with localhost as being it's address, and no other device could connect to it.

So after banging my head on the keyboard for a couple hours, and not being able to find any answers as to why upload_data only works to a local dev server if you're running on localhost, I found a round-about way of getting production data into my own iOS friendly dev server:

  1. Download the data as per the documentation
  2. Now launch  dev_appserver.py, but this time declare a datastore path as a command line argument. This is the --datastore_path= option. Also run it with a --default_partition of "" (empty string), to mirror production's data.
  3. Now that you have a dev server running on localhost with a defined datastore file, upload your data to your dev server with appcfg.py (by using the --url option pointed to localhost).
  4. Once uploaded you can now shut down that server.
  5. Now run a dev_appserver with the commands that you usually run with (the --address flag), but add a --datastore_path pointing to the datastore file you used in step 2.
  6. W0ot!
A lot more cumbersome than just doing a simple download/upload routine to test stuff locally. Of course, I may be missing something entirely as I'm still relatively new to GAE, and there may be a way to do this with a local dev server that is running on an actual LAN ip instead of localhost, but I haven't been able to find it. Hopefully this will prove useful to those using GAE for their iOS apps as well, or they've found a better way to do this and can leave a comment :) .