Free bullet physics system.
Blitz3D Forums/Blitz3D Userlibs/Free bullet physics system.
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Free bullet physics system. ;******************************************************************* ;******************************************************************* ;*** ;*** Example of use BlitzBullet ;*** (Physics Bullet Library wrapper for Blitz3D) ;*** ;*** (c) 2010-2011 Mirage-lab Team ;*** www.tools.mirage-lab.com ;*** ;******************************************************************* ;******************************************************************* Hi, I exchanged a few emails with the author of the bullet physics library, which for me is one of the best I've had a chance to use. And the author has granted me a license key for free distribution in the community. Something that feature I love about this system is its incorpordado physical purification system, where I had the opportunity to learn many things. So enjoy, and a special thanks to its Author Andry Svershko. Thank you :).                                   |
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| Great one Yue! That's a very nice addition for the community. Haven't been here much recently due to a burnout which limits me severly, but I have to comment on this one. Seen you did make a lot of progress recently: my compliments. I personally am more a fan of NVIDIA's PhysX system as it appeared more evolved, but I may be wrong. I've seen you have been doing really nice things with the Bullet system like Pawn and MarsRover, so you appear to have a lot of experience with it. Therefore I have a few questions: - Is it faster than NVIDIA's PhysX? - Is it easier to use? |
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| Hi, I tried a time PhysX lib, but I could never understand in depth because they do not speak English, I'm not a programmer and the only way to learn it is under trial and error. However something that I love bullet system is its purification system where I could understand certain concepts that before could not understand and from my point of view I think the bullet library is much better than others I have tried using only just look at the examples. Regards. :) |
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| The Bullet physics engine seems fast from the tests that i have done, however i have not found a way to make a turning moving body stop after a certain anglevelocity / linearvelocity, so i was a bit annoyed by this. Else i like it. I wanted to use it to add destructions (of floors, walls, ceilings, columns) to an underground structure that i was building. |
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| I now jam I meet is not how to make my player to take a box in his hands and transport to another location. I guess if there is a way to do it, just do not know. |
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| Thanks Yue! This is awesome :D |
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| Hi, Fantastic library! I have a couple of questions should there be an expert here reading this: Is there an English help file around? My Russian is a little rusty :) Has someone tried this on a terrain? I'm playing around with example "7. Terrain" but I don't understand these lines: bodyTerrain=btbodyCreateTerrain(terrain,5,50,5) btBodySetPosition(bodyTerrain,160,24,160) If I change the terrain scale to e.g. 15,50,15 the balls are not reacting to the terrain as expected. Probably a change in the numbers 160,24,160 is also needed but I can't see the mathematical connection between these numbers...? Also, I would like to know if it would be possible to create a multi-textured (grass,sand,rock etc.) terrain in which each of the textures would allow for different physics settings (sand very soft + more friction, rock very hard/bouncy etc.)? Thanks! |
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btDebugDrawSetMode(1+2) scaleEntity(Terrain,100,100,100) btBodySetScale(bodyTerrain%, 100,100,100) Unfortunately there is no help in English, but I think if you activate the cleaning system you can understand many things. |
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Thanks for the debugDraw function - I rewrote part of the terrain example to make it accept other heightmap sizes and scales. Still have no clue why it needs this offset though:Local terrain=LoadTerrain( "..\media\heightmap_256.bmp" ) Local scalex% = 3.0 Local scaley% = 30.0 Local scalez% = 3.0 Local heightmapsize% = 256.0 ScaleEntity terrain,scalex,scaley,scalez Local bodyTerrain=btbodyCreateTerrain(terrain,scalex,scaley,scalez) Local bodyTerrainX% = (160.0 / 5.0) * scalex + ((heightmapsize-64) * (scalex/2.0)) Local bodyTerrainY% = (24.0 / 50.0) * scaley Local bodyTerrainZ% = (160.0 / 5.0) * scalez + ((heightmapsize-64) * (scalez/2.0)) btBodySetPosition (bodyTerrain,bodyTerrainX,bodyTerrainY,bodyTerrainZ) |
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| Cant believe I missed this, very capable looking lib, great work :-D |
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| Very nice, well done for obtaining this license, Yue and thanks for sharing! |
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