| --- Log opened Mon Apr 13 00:00:34 2009 |
| 00:00 | <@Derakon> | I guess the first step is to pull out the "how to make this feature" logic at the tunnel level, so it's out of the way when I do the rest of it all. |
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| 00:37 | <@Derakon> | First pass done; the code that plants seeds for the spacefilling algorithm has been moved into separate modules. |
| 00:45 | <@Derakon> | ...I'll be exposing a lot of the internals of mapgen to modders with this change. O_o |
| 00:45 | <@Derakon> | It's gonna have to go undocumented for a while, though. Code like "if map.blocks[x][y] == 0 and y > x * slope + intercept and (x, y-1) in map.deadSeeds and map.deadSeeds[(x, y-1)].node == sector:" is not particularly self-evident. |
| 00:47 | <@Derakon> | And modders who don't know what they're doing will probably break everything many, many times. ¬.¬ |
| 00:48 | | * Derakon finishes making feature creation moddable. |
| 00:48 | <@Derakon> | treenode.py is down to 568 lines from 797 lines earlier today. |
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| 01:44 | <@Derakon> | Man, making configuration files into Python scripts that define dicts is easy. Why didn't I start doing this earlier? |
| 01:46 | <@McMartin> | Code injection vulnerabilities?~ |
| 01:46 | <@Derakon> | I don't think it really qualifies as code injection if you're actually modifying the source that gets executed. |
| 01:47 | <@Derakon> | But yeah, sandboxing this is pretty much impossible AFAICT. |
| 01:50 | <@Vornicus> | Eh. If you're pulling in dicts of plain data, you're probably better off with JSON. |
| 01:51 | <@Derakon> | Hm...yeah, I bet there's a JSON library for Python. Good thinking. |
| 01:51 | <@Derakon> | Of course, JSON won't cover the dynamically-imported modules for modifying mapgen. |
| 01:52 | <@Derakon> | Since those aren't just simple dicts of data. |
| 01:52 | <@Vornicus> | true. |
| 01:59 | <@Derakon> | I'm not too worried, though, since I won't be allowing modified code to be run on the unregistered version, and if they're modifying the registered version, what do I care? |
| 02:07 | <@Derakon> | I need an algorithm that, given a set of ranges along the Y axis, places a dot down on the X-Y plane for each range, such that each dot is inside one of the ranges (1:1 mapping) and each dot is as far from the other dots as possible (or reasonably close, anyway). |
| 02:07 | <@Derakon> | Anyone know of something I could adapt to this problem? |
| 02:09 | <@Vornicus> | Without a constraint on the X, you can make the distances arbitrarily large. |
| 02:09 | <@Derakon> | X and Y are constrained to the range [0, 1]. |
| 02:10 | <@Vornicus> | Well you could always use a gravity algorithm. |
| 02:10 | <@Vornicus> | With repulsion only. |
| 02:11 | <@Derakon> | So...just plop them down randomly in their ranges, then run a few hundred cycles of each point repelling the other points (while the points don't leave their ranges)? |
| 02:14 | <@Vornicus> | Yep. |
| 02:15 | <@Derakon> | It seems like it might be possible to get two points "cornered" close to each other... |
| 02:16 | <@Derakon> | ...actually, since ranges are just along the Y axis, forget I said anything. |
| 03:04 | <@Derakon> | GG Python. |
| 03:04 | <@Derakon> | for foo in bar: range = foo['elevationRange']; doSomethingWithRange(); |
| 03:04 | <@Derakon> | for i in range(0, 100): |
| 03:05 | <@Derakon> | TypeError: 'list' object not callable |
| 03:05 | <@Derakon> | It's out of scope, dangit! |
| 03:08 | <@Vornicus> | No it's not |
| 03:08 | <@Derakon> | Sorry, I didn't indicate my indentation properly. |
| 03:08 | <@Derakon> | for foo in bar: |
| 03:08 | <@Vornicus> | It's still not. |
| 03:08 | <@Derakon> | range = foo['elevationRange'] |
| 03:08 | <@Derakon> | doSomethingWithRange() |
| 03:08 | <@Derakon> | for i in range(0, 100): |
| 03:08 | <@Vornicus> | Not out of scope. |
| 03:08 | <@Derakon> | ...what. |
| 03:09 | <@Vornicus> | Python has scope according to the most local of the following: function, class, module. |
| 03:09 | <@Derakon> | There's no "block" scope? |
| 03:09 | <@Vornicus> | Indeed not. |
| 03:09 | <@Derakon> | That is...unusual and important. |
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| 03:09 | <@Vornicus> | Nor would you want one in a language where you don't declare variables. |
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| 03:10 | <@Derakon> | Variables are declared by assigning to them. |
| 03:10 | <@Vornicus> | Right |
| 03:10 | <@Vornicus> | You don't want to have to do this: |
| 03:11 | <@Vornicus> | def foo(bar, baz): qux = None if bar: qux = baz.a;; else: qux = something_else;; do_something(qux) |
| 03:12 | <@Vornicus> | in Python you don't need the qux = None statement, despite qux not being placed directly in that block. |
| 03:12 | <@Derakon> | What's wrong with that? |
| 03:13 | <@Vornicus> | The point is that block scoping can give very strange behavior when you don't have to declare variables. |
| 03:13 | <@Derakon> | I'd rather have qux = None be a requirement, and then have trying to use qux outside of the wrong block scope cause an error, than accidentally use the wrong qux because I forgot to set up the right one. |
| 03:16 | <@Vornicus> | The other problem is you're using a builtin name, which is just bad juju. |
| 03:16 | <@Derakon> | Yeah, yeah. |
| 03:17 | <@Derakon> | It's such a handy name though! |
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| 03:51 | <@Derakon> | Aaaaand I just got bitten by a variable staying in scope after I'd thought it had left. |
| 03:53 | <@Derakon> | Okay, the reverse-gravity thing seems to work OK... |
| 03:53 | <@Derakon> | Preliminary tests with four zones puts them down pretty optimally, anyway. |
| 03:54 | | * Derakon adds two more zones, discovers that nothing is getting placed in the middle of the domain. |
| 03:56 | <@Derakon> | I guess that makes a certain amount of sense, though. |
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| 15:51 | <@gnolam> | VGUI-y goodness: http://www.cyd.liu.se/~torha229/RadiaX/rad_dorm0002.jpg |
| 15:54 | <@gnolam> | (And kids, putting a 40 GBq Cs-137 source in the shower in your apartment is bad, mmkay, so don't try this at home.) |
| 15:59 | <@gnolam> | And no, the analog and digital readouts shouldn't match. They work on different integration time steps. |
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| 17:19 | | * Derakon ponders how to go about placing regions inside of zones (zones being areas like "jungle" or "surface" or "underwater" and regions being more tightly-themed, like "grass" or "beach" or "constructed base"). |
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| 17:20 | <@Derakon> | I'd like to be able to control relative region size, I think. But I need to make certain that the regions I select fill the zone. |
| 17:21 | < simontwo> | Derakon, is your game starting to span several virtual screens? |
| 17:21 | <@Derakon> | I don't understand the question. |
| 17:21 | <@Derakon> | The mazes have been bigger than one screen for quite some time now. |
| 17:22 | < simontwo> | oh, this isn't your spaceship game? |
| 17:22 | <@Derakon> | No. |
| 17:22 | < simontwo> | cool. |
| 17:22 | < simontwo> | got a screenshot then? |
| 17:22 | <@Derakon> | You...haven't been keeping up with this channel, have you? :p |
| 17:23 | < simontwo> | no. just came back from vacation. :) it's probably a month ago since I was last here. |
| 17:23 | <@Derakon> | http://derakon.dyndns.org/~chriswei/games/jbrl/collision/player10.gif |
| 17:23 | <@Derakon> | (4MB GIF) |
| 17:24 | < simontwo> | impressive. |
| 17:24 | < simontwo> | did you also make the graphics? |
| 17:24 | <@Derakon> | Yes. |
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| 21:21 | <@AnnoDomini> | How does one declare functions in VHDL? |
| 21:22 | <@AnnoDomini> | More to the point, I want to know where in a design file I should put them. |
| 21:32 | <@AnnoDomini> | Nevermind, found it. |
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| 21:40 | <@Derakon> | Behold! Is it not a thing of beauty? >.> http://derakon.dyndns.org/~chriswei/games/jbrl/mapgen30a.png |
| 21:41 | <@AnnoDomini> | A mother loves her children. |
| 21:41 | <@Derakon> | Hee. |
| 21:42 | <@Derakon> | I'm placing regions of the map down; green is jungle, red is lava-hotzone, grey is tech-hotzone. |
| 21:46 | <@Derakon> | The main issue with this approach is that it tends to make isolated chunks of the less-common regions, whereas I'd prefer a method that makes contiguous, smaller regions. |
| 22:43 | < Rhamphoryncus> | .. it looks interesting but I have no idea what you're doing :) |
| 23:12 | <@Derakon> | Consider each colored area to be a particular type of terrain. |
| 23:12 | <@Derakon> | E.g. dirt and grass, or rock, or metal plating. |
| 23:13 | <@Derakon> | The idea is to place these regions down semi-randomly, such that each region is roughly the size dictated in the config file. |
| 23:13 | <@Derakon> | The grey region is supposed to be about 25% the size of the red region...which it is, but it's all broken up ATM. |
| 23:17 | | * Derakon ponders a swapping mechanism. |
| 23:17 | <@Derakon> | It should be fairly evident, when you look at it, that those regions are roughly laid out on a grid. |
| 23:18 | <@Derakon> | I'm starting from seeds of size 1 and expanding them out to make these regions. |
| 23:18 | <@Derakon> | What I could do is find isolated seeds and swap them around so they're next to seeds of like type. But that seems...clunky. |
| 23:19 | <@Derakon> | It'd be better to simply lay down all the seeds for a given type at once...but then I have to change my seeding algorithm (which is just doing a "go across and down" rows/columns thing at the moment) to be something much more complicated. :\ |
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| 23:46 | <@AnnoDomini> | Okay, this is just plain funky. How am I supposed to understand this: "(X1 xor X2) or (X3 xor X4) or (X5 xor X6)" when the result is supposed to be a single bit? |
| 23:47 | <@Derakon> | X1 through X6 are presumably all also single bits. |
| 23:47 | <@AnnoDomini> | Nope. |
| 23:47 | <@AnnoDomini> | They're bit vectors. |
| 23:47 | <@AnnoDomini> | Forgot to mention. |
| 23:48 | <@Derakon> | Okay, then presumably you take that result, if if it's nonzero, return 1, else return 0. |
| 23:51 | <@AnnoDomini> | Hmmm. Thanks. |
| 23:51 | <@AnnoDomini> | I'll try that. |
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| 23:58 | <@Derakon> | Perhaps this'll make my current project more evident. Compare http://derakon.dyndns.org/~chriswei/games/jbrl/mapgen30b.png to http://derakon.dyndns.org/~chriswei/games/jbrl/mapgen30c.png |
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| --- Log closed Tue Apr 14 00:00:45 2009 |