<valve|gary>
"What about FSAA?"
<valve|gary> Anti-aliased has been fixed on all cards.
<techseekers|techseek>
After watching the docks video, is that the AI for the headcrab zombie that makes in throw the object at you or is it a scripted action. eg. does the enemy AI have some intelligence like firing at explosive barrels when your near them or throwing objects at you?
<valve|gaben> The zombie is aware of objects in the environment. His AI realizes when he can throw an object at you and applies the appropriate physics forces to make it happen. The zombies are not scripted to throw specific barrels; it's all tactical.
<techseekers|techseek>
Will there be a benchmarking routine in HL2? and Technology-wise, what is your favourite( or most proud of) new addition to the sequel?
<valve|gary> Yes. There is a detailed benchmark released before the game ships where you can run a particular card through any of the DirectX levels where appropriate.
<valve|yahn> On demos: we have a nice UI for skipping ahead, doing fast forward, slomo, pause/resume, etc during playback. This has been pretty useful for us for cutting the e3 movies, e.g.
<valve|yahn> We also have a separate demo metafile editor built into the engine which works on .vdm files (Valve demo metafiles). The metafiles allow queuing up events to occur at certain frames of the demo during playback: screen fade in / out, titling, sound fading, changing playback speed, issuing arbitrary commands, etc.
<valve|david> Someone asked a question about extending the behavior of triggers: Filters are a way of extending the rules for things like when triggers fire or what can damage breakable objects. For example, I can add a classname filter to a trigger_once and make it only fire when touched by npc_headcrab. I can also make a breakable object only break when damaged by a grenade.
<valve|yahn> We have a really neat tool called the "Half-Life Face Poser" which allows you to control all of the facial muscles on our humanoids' (could be faces on Alien legs in a mod though...) faces. In particular, you can store set poses as facial expressions or you can animate the face muscles in timing curves. These primitives can be placed together on a timeline to have your actors act out a scene
<valve|yahn> The faceposer allows for queuing up of the sounds the AIs might say and includes ways to extract the phonemes/visemes from the wav files and to tweak them until they are just right. In addition, actors in scenes have other controls which can be specified in the face poser, such as "look at this other actor", "move to this spot", etc.
<valve|gary> We can deliver special versions of content to users with particular hardware based on the hardware that they have in their machines. Using this, you could conceivably make a mod that really pushes the limit of hardware and requires specific hardware to run. With the flexibility that you'll have with rendering, I could see mod makers go nuts with this.
<Bounty|KnyteHawkk>
And lastly, how much support do modmakers have to implement certain kinds of vision features for their mods? Examples: the top-down commander view from Natural Selection, X-ray vision allowing you to see through multiple walls, thermal imaging, etc.
<valve|gary> You can use Mateiral Proxies to decide how an object is going to be rendered. If you want to make the object visible through walls, Material Proxies are the place to do this.
<C51|Slinger>
What sort of sound engine does HL2 have. Is it a 5.1 system, and what technologies does it support. EAX etc.
HL2 supports 5.1, 4.1, and 2 speaker systems. HL2 supports wave files with 8/16bit, mono/stereo, optional ADPCM compression, and arbitrary sampling rates up to 44.1KHz, and MP3 files as well. We support our own DSP in software. We're working with creative on supporting EAX for that as well.
<valve|yahn> How to do voice filters? This is something we'll probably stick in before shipping. In essence, we plan on exposing the sound buffers to the client .dll per channel so that you can modulate the way a particular sound channel is processed. This is pending final performance analysis, of course.
<valve|gary>
"How do you author bump maps."
<valve|gary> We use normal maps in particular. We make these three different ways:
<valve|gary> 1) Build geometry in XSI, Max, or Maya roughly in a plane and render the normal map directly for world textures. We'll have instructions on how to do this in the SDK.
<valve|gary> 2) Build a hi-poly mode in XSI and use their plugins (or similar plugins for other packages) to create normal maps.
<valve|gary> 3) Paint height maps and convert them to normal maps.
<C51|Slinger>
Can bump mapping be applied to 1st person weapon models, and what sort of materials are there that can be used other than the ones shown on the E3 demo?
<valve|gary> "re: bump maps on weapon models" You can use bump maps on weapon models. There are a number of shaders that these materials can use, including custom ones that you make yourself.
<valve|gary> . . the nubmer of those are infinite.
<valve|gary>
"What's the largest possible texture."
<valve|gary> 2048x2048. If there is a need for larger textures, we can up this limit.
<valve|ken> slinger : there's also very fancy stuff like Bullet sounds are modeled and spatialized as a continuous sub-sonic 120db sound sources moving through space.
<Entro|Prozac>
What role will Steam play in the MOD community? Will future MODs be downloadable through the Steam system?
<valve|david> First, it's a great development tool for running betas, rolling changes, getting instant feedback, etc. Second, it will improve the distribution problem -- your mod will be played by more people. Finally, it will introduce a more direct path to consumers for those who want to take their mod into the commercial space.
<valve|gaben> "Can you attach a camera to a vehicle?" Yes. Cameras support hierarchy, so they can be attached to any object.
<valve|ken> slinger : you'll really want a multi-channel sound system, a simple two-speaker setup loses a lot of the coolness.
<valve|gaben> "How do I convert my Half-Life mod to Half-Life 2?" Models, animations, and textures just need to be compiled with the new tools. The maps can be loaded into Hammer and saved in the new format (VMF). The code should be pretty familiar to Half-Life mod authors, but there is some porting of the code as some specific engine features are implemented differently usually - much more generally.
<valve|david> Were the I-beams and dumpster in the trap town demo scripted or physics + AI? They were all AI, we just hinted for the soldiers to stand in opportune spots so they could get smashed by the heavy physics objects.
<valve|yahn> You can also draw 3d things into vgui panels so you can put a rotating model inside your menu. Also, you can have a vgui panel in your 3d world which you can manipulate so you can have an object in the world containing your menus, etc.
<valve|david> Thanks for the questions everyone. We've got to get back to HL2!
<valve|gary> Thanks!
<valve|yahn> Okay, this was fun, thanks for asking all of the questions. TTYL.
<valve|morello> Thanks guys. Gotta go
<valve|ken> bye.
Hoop dat het een beetje duidelijk is, dit is nog niet eens de helft van alle vragen en antwoorden maar et was zo veel en ging dwars door elkaar heen
jmmr genoeg
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bAdmuTs op 05-08-2003 00:52
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