Simple Physics Engine

Simple Physics Engine

Alex McLeod	2007-12-09 21:46:28	39
	Nice work on version 2.6 - the new features are very welcome - especially the inertia tensor access. Is there any way to get/set an object's centre of mass after its shape has been initialised? Take a bus or truck for example - its shape is a simple box, but its centre of gravity must be very low or it will overturn when going around a corner.

phyar	2007-12-05 20:12:44	38
	Are there any plans of porting it to unix based systems like linux and osx? Is there a forum available? ------------------------------------------------ I plan to port it to Linux after SPE 3.00 released, OSX is not planed, but that doesn't mean never to OSX. Forum is being preparing, available soon. Thanks.

Paul	2007-12-05 18:27:02	37
	Are there any plans of porting it to unix based systems like linux and osx? Is there a forum available?

phyar	2007-12-04 19:09:07	36
	I can't download (here in slovakia) a demo without package being corrupted. Is it possible to download it from somewhere else, the other link doesn't work. Thanks ----------------------------------------------- If you can't download demo even by the second link, you can use a download manager to get it, generally, you'll success, sorry for inconvenience.

Pale	2007-12-04 18:44:27	35
	I can't download (here in slovakia) a demo without package being corrupted. Is it possible to download it from somewhere else, the other link doesn't work. Thanks

phyar	2007-12-04 10:59:25	34
	By shape case I mean take a shape, usually a primitive, ........ ------------------------------------------------ OK, I see. SPE is always good at do swept test like this(\"is basically sweeping a shape along a ray\"), I'll try to add interfaces to accomplish purposes as you said. Thanks.

Jeremy	2007-12-04 10:32:55	33
	By shape case I mean take a shape, usually a primitive, such as a box, sphere, cylinder, and cast it like a ray. Basically it's a ray cast with a shape volume. AI commonly shape cast the bounding box of their vehicle along a desired direction to see if it is free of obstructions. Ray casts can't accomplish the same thing. In Havok, I would take the width and height of an object, give make it really thin, and then cast it forward to a position. It effectively does a swept collision, returning similar information as you would get back from a ray cast. If SPE doesn't support swept collision or similar I'm not sure how you could implement it. One could also use it to shape cast a players collision capsule/sphere/box down to get more accurate collisions than what a single raycast or even multiple raycasts could do. Hope that makes sense. Shape casting is basically sweeping a shape along a ray.

phyar	2007-12-04 10:03:44	32
	I'm very interested in SPE due to it's thread supporting nature out of the box. I'm curious whether it supports batch shape casts and ray casts though. In Havok at work, we often create a big queue of raycasts or shapecasts and let it resolve on a seperate thread. This is used a ton for AI especially. Does SPE have similar functionality? In addition, batched queries are significantly cheaper, as they only do 1 broad phase for the entire batch(batches are most often used for close proximity tests). I'd be very interested in SPE if batched parallel queries were available. Is it planned? ------------------------------------------ Currently SPE use single thread to do ray cast, but these works are natural parallel task and easy to make it multi-threads. I'll add this functionality in the next release, remember your feedback or request is often a part of my plan. And could you tell me more about shape cast?

Jeremy	2007-12-03 23:05:08	31
	I'm very interested in SPE due to it's thread supporting nature out of the box. I'm curious whether it supports batch shape casts and ray casts though. In Havok at work, we often create a big queue of raycasts or shapecasts and let it resolve on a seperate thread. This is used a ton for AI especially. Does SPE have similar functionality? In addition, batched queries are significantly cheaper, as they only do 1 broad phase for the entire batch(batches are most often used for close proximity tests). I'd be very interested in SPE if batched parallel queries were available. Is it planned?

Steven	2007-11-21 19:30:36	30
	Hellow, phyar. I guess, 'easy of use' is a first key-feature of SPE. And it's really easy to learn and use! What are you think about 'destroyable physical environment' as a second key-feature of your engine? I have some experience and interest in this area. Mail me, if you are interested: dev <at> lss-dev.ru

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