My brain makes things explode.
Technology
Blog entries about technology
Qt4
Mar 29th
As of last night, I started looking into using Qt4 for future Application development projects of mine – and damned if it doesn’t look like the best option available to me (the best alternative being writing the UI on each different platform individually). For those who don’t know, Qt4 is an immensely popular and very powerful cross-platform application library that works with C++, and is supported on a large number of machines – from 64-bit Windows desktops to 32-bit embedded Linux solutions to the wonder that is Mac OS X. All without having to change the code – all that is required is a recompile (assuming you’ve set things up properly, of course). It even supports cross-platform project (.pro) files, and has a cross-platform toolset that accompanies its SDK – including a GUI designer, a set of debugging tools, and even an IDE that ties with a MinGW compiler.
I’ve started working again on an IRC client – now under the name alienIRC (formerly SevenIRC, which was being planned solely for Windows). I’ve also decided to make it completely open-source, and intend to license it under LGPLv3, something it shares with the Qt framework that is going to power it. I’m going to be setting up a Git repository on Gitorious for the project, and will be setting up some development pages on this blog – including issue tracking, a wiki, and some other tools. Right now, my plan is to closely emulate the mIRC interface – mostly because mIRC is my favorite IRC client – and will be working to make sure it feels native on all supported platforms. I will personally be maintaining builds on Windows (32- and 64-bit), OpenSUSE 11, and Mac OS X Snow Leopard. I will primarily be using the IDE that comes with Qt, though I will work to ensure that it compiles in X-Code 3 and Visual Studio 2008/2010.
As far as alienIRC itself goes, I’m looking at the possibility of using WebKit for the chat windows’ messages. This would make it incredibly easy to add formatting, because I could easily change messages from the mIRC color character into HTML tags before adding the text to the message box. It all depends on how it runs compared to a custom text box. I also plan to implement a number of features that are popular with mIRC, such as scripting (Lua, specifically), “address books,” nick highlighting, file sharing, et cetera. I’m currently working on some UI concept work – since it will have to be different from SevenIRC’s WPF plans and the previous OS X-only alienIRC UI concept that relied on some UI elements only found on Mac (such as Drawers).
If anybody is interested in contributing to this project, send me some messages – I’d be happy to hear your input, especially on features that you feel would be good to implement. Make sure you sign up for an account on Gitorious – and that you upload your SSH keys and such. If you’ve never used Git, and you’re a Windows developer, this is a very useful link for seting it up on Windows: Git for Windows Developers: Part 1
C++/D3D Pong Maintenance: The Game Loop/Frame Delta
Mar 25th
Tutorial Description
While running the game/engine that we’ve been developing throughout this tutorial series, you may have noticed that the engine kind of runs… like crap. So, before moving onto the next tutorial in the series (the code for which is completed), which will cover keyboard and mouse input, I feel that it’s somewhat important to fix this. It’s just going to be some small updates to CGameEngine.cpp, so it won’t be hard.
Code Listing 1: CGameEngine.cpp -> CGameEngine::CGameEengine(void)
First, we’re going to correct an error with our game timer, which we never actually created an instance of in code – causing the GetRunTime feature to fail due to a member variable not being initialized (CGameTimer::_start). Replace the constructor for CGameEngine with the following, in CGameEngine.cpp
CGameEngine::CGameEngine(void)
: _windowHandle(NULL), _windowTitle(L"D3DPong"),
_screenWidth(640), _screenHeight(480), _colorDepth(32),
_gameRunning(true), _gameTimer(new CGameTimer())
{
}
Code Listing 2: CGameEngine.cpp -> CGameEngine::Update(void)
Our new Update method is much smaller than it was before. We’re still using fast-as-possible rendering and updating, so this isn’t going to fix the minor graphics tearing that you’ve no doubt noticed before this, but it is going to make things run a little better.
void CGameEngine::Update(void)
{
float delta = this->_gameTimer->GetRunTime();
GameUpdate(delta);
this->_gameTimer->Reset();
this->BeginRender();
GameRender(delta);
this->EndRender();
}
Nicer, cleaner, shorter. This was caused by a bit of an inconsistency and laziness on my part, but things should run a bit smoother now. In the next tutorial, we’re going to be adding input, and will put the beginning pieces of our game into effect. I’ll cover enabling VSync at a later point, because I’m too lazy to deal with it right now. It’ll probably be in another “Maintenance” mini-tutorial.
Expect Tutorial 4 soon!
Torque Game Builder/Box2D Integration
Feb 20th
I’ve been looking at Box2D a lot recently, mostly because Torque 2D (Torque Game Builder’s replacement) is going to be using it. It’s a damn good, and powerful, two-dimensional physics engine -- it’s what powered Crayon Physics, and several similar physics-oriented games. Box2D is a pretty beautiful thing, from what I’ve looked at, and it’s been ported to a lot of systems. Recently, I found a Torque Game Builder integration for it, and figured I’d look into it. Currently, it’s integrated into the Torque Game Builder editor, and still allows for the use of the standard TGB physics (you cannot have both Box2D and TGB physics on the same object, however). The system comes in the form of a class that needs to be set on the Scene itself, and behaviors that you add to objects. The system uses the object’s convex collision polygon, as well.
Video
Screenshots of the Pyramid Test
Stacked Pyramid
Tumbling Pyramid
TGB/Box2D Integration Links
Torque Game Builder 1.7.4
Box2D implementation
Aliens vs Predator
Feb 18th
Humans are so totally fucked in this game.
Well, Aliens vs Predator was finally released two days ago, and I hadn’t noticed. Started downloading it the night it was released, rather than the day. Anyway, started playing it last night, and this morning, and I’m loving the game. The demo wasn’t all that great, I’ll admit, but that’s mostly because Free-For-All in the AVP setting is pointless. To really enjoy the game, you need a Team Free-For-All, with each team being one of the three races in-game (Xenomorph, Predator, or Human). Although I have to say, playing as a Human/Marine in the multi-player game modes is very masochistic. Think about it – as a human, you lack the badassery of the Predators, which includes vision modes specifically designed to help hunt humans and Xenomorphs (believe me, in the dark multi-player levels, Xenomorphs are hard as fuck to spot, harder yet to kill, and don’t even think about catching one if they decide to sprint away), you lack the cloaking, so you’re easy as hell to spot, no matter where you are (again, the Predators can spot all humans with one visor mode, and the Xenomorphs (aliens, for anybody who hasn’t figured that out yet) can track you by “scent” – which, in gameplay terms, is an outline showing where you are. Unlike the Predator’s visors, though, Xenomorphs can see you even through walls), and if you aren’t with a group of friends – well, count yourself among the dead. Because that’s really the only opportune time to kill either of the opposing races – if they start to take out one of your buddies.
Playing as the Xenomorphs, in multi-player especially, but single-player as well, can get disorienting fast. You see, Xenomorphs can run on walls, and can jump from one wall to another. And they’re fucking fast. If I, as a Xenomorph, get injured and need a quick escape, I hold my sprint key and just fucking run. There’s no way that either a Predator or a Human will be able to catch up to me – especially if I’m switching between walls, ceilings, and floor, and jumping from surface to surface. But, as I said, this has the disadvantage of being severely disorienting, however incredibly bad-ass it may be.
Playing as the Predators is amazingly fun, especially in the multi-player games. While you can be seen by humans when your cloak is engaged, they’re usually twitchy as hell and won’t spot you well in the shadows. Xenomorphs still have their scent-tracking thing, and will spot you just as well as they’d spot a human, but you’ve got auto-tracking, shoulder-mounted badassery in the form of a laser gun that is fast enough to track them, provided they don’t jump behind a wall or into a vent. You’ve also got proximity mines, and a few other useful tools, and no player will be too happy when, out of nowhere, in spite of their vigilance, they’re blasted from behind by a laser cannon from a creature they can barely play. But hey, if they’re masochistic enough to play as humans in multi-player, that’s their own damn fault. Who wants to play a pathetic human when you can play incredibly-advanced alien hunters (I guess that human’s aren’t the toughest prey anymore) or incredibly-deadly alien beasts, anyway?
In short, if you have the chance to buy it, whether it’s for PC (where I play), XBOX 360, or some other platform, I highly recommend it. If you do get it on PC, don’t be a puss – buy it over Steam, not at a store, and hit me up for a game.
What did I just do?
Feb 4th
Making my terminal insult Justin.
Well, I’m not entirely sure why, but for some reason I seem to have thought that it would be an okay idea to buy a Mac. What is wrong with me, I honestly don’t know, but I can say that it’s a pretty solid system. And I like the fact that the iMac only has a single cable – the power cable – while everything else (system, monitor, etc) is either built-in or (in the case of the keyboard & mouse) running through Bluetooth.
At least now I can start working on the native builds of my Mac-based projects (Waxy’s Sushi Party among them).
