3d cube physics test

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dop2000

- R0J0hound
- - Joined 15 Jun, 2009
  - 90 topics • 7,280 posts
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- 23 Sep, 2018
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Here's a test of a 3d physics engine done from scratch. Just a cube and the floor. It's fairly cool to watch though. All vanilla C2. No JavaScript or third party plugins. Just for the fun of it.

dropbox.com/s/99nsqlg9psc9lh9/3d_physics_test1.capx
- Prominent
- - Joined 28 Apr, 2012
  - 137 topics • 1,246 posts
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- 23 Sep, 2018
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wow, that's amazing!

I'm definitely going to have to look more closely at this when I have the time. I really appreciate barebone stuff like this since it usually makes things more understandable as to what is exactly going on.
- R0J0hound
- - Joined 15 Jun, 2009
  - 90 topics • 7,280 posts
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- 23 Sep, 2018
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Thanks, glad you find it interesting!

Here's my main reference for it. I got most of the math from there. In events the formulas are a bit stretched out.

gafferongames.com/post/how_the_go_stone_moves
That series of articles gets a tad vague at the end, but still it does a good job explaining why certain math is used.

Edit:

This site is also a good reference for math in general. Much more readable than the equations on wikipedia.

euclideanspace.com
- R0J0hound
- - Joined 15 Jun, 2009
  - 90 topics • 7,280 posts
- 1
- 24 Sep, 2018
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Here's another update.

dropbox.com/s/t1l6yas0gs1jz9v/3d_physics_test2.capx
- Added a 3d obj file parser to make having different 3d shapes easier (manually defining point locations and edges with variables was tedious). So now it uses a dodecahedron instead of a cube. It broke the backface culling though.
- Added a tilt to the camera so it can look down. The straight ahead view before wasn't super nice looking.
- Did some cleanup: pulled some of the math into functions, added overview equations in the comments, and reorganized some of the events.
- Prominent
- - Joined 28 Apr, 2012
  - 137 topics • 1,246 posts
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- 24 Sep, 2018
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Nice! I'll have to read through that. I read a little, and I'm already feeling like I should have worked harder in math classes- the mathematical notation stuff usually found in wiki pages is something I don't have have good grasp of interpreting.
- R0J0hound
- - Joined 15 Jun, 2009
  - 90 topics • 7,280 posts
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- 25 Sep, 2018
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The math notation used on wikipedia is pretty hard to read in my opinion. Much harder than what I remember from school at least. Then again I didn't go much higher than calculus.
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- Cassianno
- - Joined 2 Mar, 2012
  - 11 topics • 234 posts
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- 26 Sep, 2018
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This is really nice r0j0!
- AySquirrel
- - Joined 19 Jun, 2015
  - 1 topics • 46 posts
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- 28 Sep, 2018
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Wait that's sick what the