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Author
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Topic: To Raider......
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Harman_5
Pilot
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posted 05-23- 07:22 AM
   
Hi Raider, you said in the "Hit or miss..." topic that you'd be happy to look at the Matilda tank regarding hit detection. I've been trying to email you but I keep getting error messages back. Anyways, if you'd like to check out the Matilda regarding hit detection, then click and download the tank below. I'm pretty much stumped, although I know it has something to do with the LODs...
http://members.nbci.com/harman_5/Matilda(Raider).zip ------------------
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Raider
Pilot
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posted 05-23- 08:29 AM
Got it. Thanks Harman, I been checking my email for it. I don't think my ISP allows me to send/receive anything over 1 Mb. Although just the other day I got a 2 Mb email attachment for the first time.IP: Logged |
Harman_5
Pilot
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posted 05-23- 09:36 AM
Thanks Raider. Actually, I was trying to send normal email messages without attachments and I was getting messages like "Message still undelivered for 4 hours". Hopefully, it'll get better soon. Thanks for looking at the vehicle. I'll have to hold off releasing these two vehicles (Matilda & TigerII) for now, and release the pack without them for now. ------------------
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Da Wing Waxer
Pilot
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posted 05-23- 10:23 AM
Ithought ground collision was determined using object body points and hit detection was achieved through the inertia boxes.IP: Logged |
Harman_5
Pilot
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posted 05-23- 10:30 AM
That's my logic too Da Jug Head, however I did a little test, I took the Matildas body and replaced it with a Citroen body, fire up SDOE, it detects hits! Put the Matildas' body back on to the tank, hits are disabled again. I can see the tracers go out into the distance through the tank body! It's my reasoning that the LOD makeup is wrong on the Matilda. There's something about the 3D model for the Matilda that SDOE doesn't recognize when it's made into a CAircraft class object. Either that or I'm not doing something right. All the bodypts and Inertia/CG are defined properly. It's the model. I need another 3D model of the Matilda or maybe I can 'fix' the existing one somehow. Hopefully Raider can make sense of this. ------------------
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Raider
Pilot
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posted 05-23- 10:37 AM
Harman, check your mail. I have had trouble with my ISP in the past, so if you don't get it, just post here and I will upload it.The Normals looked well, normal, they were pointing to the outside. I made that portion of it 2 sided and now it works in the game. I didn't try flipping it and flipping it back. I have heard that helps with shading problems and may help with this as well. I will try that later. As I understand it the hit detection is done using the lowest level lod, but it must have the correct properties.
[This message has been edited by Raider (edited 05-23-2001).] IP: Logged |
Harman_5
Pilot
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posted 05-23- 10:42 AM
I've been checking since you posted your last message, but so far nothing. I'll keep trying, but I have a feeling it's not coming. Thanks for your help.------------------
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Harman_5
Pilot
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posted 05-23- 10:45 AM
So it's detecting hits??? If so, cool!!!!  I've tried making the whole model double sided, but the lighting/shading was messed up on the model. If you can get this to work, another extra mention for you in the credits of the pack  ------------------
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Raider
Pilot
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posted 05-23- 11:04 AM
I uploaded it. Yes it is taking hits, but I didn't really check the mapping very close. I will check that and also try the flipping trick.
http://sweb.uky.edu/~jamuth0/Matilda.zip
[This message has been edited by Raider (edited 05-23-2001).] IP: Logged |
Harman_5
Pilot
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posted 05-23- 12:08 PM
Yes!! Thank you!! Thank you!! It's working now. Can I ask how you did it? And possibly what program you used? The reason I ask is that the TigerII also needs fixing, and I'd love to be able to do this myself too. Thanks again Raider ------------------
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Raider
Pilot
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posted 05-23- 12:27 PM
I extracted it and looked at the html document to find out what the lod number was for the part not taking hits. Then used AC3D to import that part. While that object was highlighted, I selected 2 sided. Then exported it and rebuilt it. That was it. I am still going to see if flipping the normals helps if it is one sided. Also, I noticed a couple extra polys on the surface of the side of the track, I don't know if that could have had anything to do with it. I will see if I can modify this a little too. In the menu at the top select 3D and check "Show Normals" This will display the normals in the 3D window. But like I said, they looked right. If you have any trouble or any questions let me know. IP: Logged |
Harman_5
Pilot
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posted 05-23- 12:54 PM
Ok, I managed to get a model loaded into AC3D by first converting it to 3DS format after exporting it from OPS. I made it double-sided in AC3D, and then exported it as VRML 1 from AC3D. I used 3D Exploration to convert it to obj, then imported it into OPS. I fired up SDOE, and it detected hits fine Only trouble was, the model was upside down and moved slightly down from its origin. Is there a way to centre the model at dead centre and the right way up in AC3D, so when you import it to OPS, it stays as it was when you exported it?Thanks ------------------
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Da Wing Waxer
Pilot
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posted 05-23- 08:53 PM
Sv straightened me out on the hit detectionQ: "Is hit detection for an object being shot at determined by an
intersection of the 'bullet' and the LOD, or the inertia boxes?" A: "Always the highest detail LOD polygons - even if they are obHidden.
obNoCollide will eliminate collision detection for that object." IP: Logged |
Harman_5
Pilot
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posted 05-24- 11:33 AM
Thanks for that Da Jug, the tanks are going back in the pack now ------------------
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Raider
Pilot
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posted 05-24- 01:11 PM
Boy Harman, that sounds like a lot of work. As for changing the position, I would say it had something to do with all the converting and exporting. I used Hippies old tools, Extractor and Builder. I have heard that they may cause some problems, but I haven't seen it. These will extract the .sm file into lods with an .html document showing the lod numbers and an .asc file that can be opened with a text editor. Then you can just use Builder to reconstruct them into the .sm file. I also hear that the OL file works very well, but I haven't really tried it. Maybe someone can fill us in on the benifits of these files. Also, I tried just flipping the normals and flipping them back and that also worked. I don't know what is going on with our email between Kentucky,USA and Australia. The mail I tried to send you also got bounced back. LOL IP: Logged |
Harman_5
Pilot
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posted 05-24- 01:24 PM
Yeah it is Raider, I'm not familiar with using Hippies tools, so I have to resort to converting parts' formats back and forth so the different programs can import them. That's what I suspected with the position of the model too, too much converting in between. It's mostly sorted now though, just a few minor tweaks to do here and there on the TigerII. Regarding the problems caused by the tools, I noticed some of my DOFs on the Matilda had the "dof" removed in the proplist "dofID '..." This is no biggie though, I haven't noticed any other problems yet. So when you say flipping the normals back and forth worked, you did this in AC3D right? I've tried flipping them back and forth in my 3D proggie Anim8or and also 3D Exploration to no avail. Maybe AC3D is the way to go. Would you happen to know where I can download Hippies tools? I've been hearing about them for a while now, I might as well have a look at 'em. They seem useful. Thanks for your time ------------------
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