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Old 09-09-18, 09:49   #1
Samz
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Default How does the Braid work?

I'm just a bit curious, how exactly does Lara's Braid physics work? is it faked somehow or did Core somehow have some sort of early physics working on the PS1?
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Old 09-09-18, 10:55   #2
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Quote:
Originally Posted by Samz View Post
I'm just a bit curious, how exactly does Lara's Braid physics work? is it faked somehow or did Core somehow have some sort of early physics working on the PS1?
Completely software calculated physics
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Old 09-09-18, 13:35   #3
The Great Chi
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As said above there is formula involved in getting Lara's braid to move, relative to her body.

The way Lara's body works is down to animation by the node point (joint) movement of each mesh in the body, so specific movements are programmed into game, like walking, running, swimming, etc, and even modified new moves can be put into a custom games (mainly TR4 TRLE net custom games) using an animation program.

The braid works the same and comprised of six meshes, with the node points, but it is automated to move with a formula to animate as though being affected by wind and also Lara's movements affect the braid. Maybe some expert at programming knows the actual formula, because I do not

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Old 09-09-18, 19:06   #4
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Hey

I'm not an expert on the programming, but I do know that in TR4, a room set as 'o' for outside will result in the braid blowing in the wind, and that is the sole trigger that I am aware of. I assume this is the same in the TR2 engine also. Hope this is helpful
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Old 09-09-18, 19:34   #5
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There is a single bit set in a room that determines that the wind blows in there. The wind always blows in the same direction (I think east but I may be wrong) and then the movement could be made pretty easily by making the braid sort of jerk by semi-random numbers.
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Old 09-09-18, 21:23   #6
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I gotta say, I've always been impressed with the braid physics, no matter how bad they might really be, and I think it's one of the most underrated features of the whole classic series. I think for a 1997 game this moving braid was quite a feat.
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Old 10-09-18, 00:24   #7
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It's funny to see that Lara's braid animation is about as complex the rest of her entire body! I know that for TR1 it was removed because of its failure to function properly, so they got it together and working for Tomb Raider 2. From there it was just using the same formula through TRC. I wonder if her hair movement is random number generated-- I would assume so.
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Old 10-09-18, 02:42   #8
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Thought I would do some experiments with Great Wall and Venice levels...

The wind effect of the braid only works in rooms marked as outside (correct as stated by AgentXP)

The wind direction is strongest in the North direction (b122251 mentioned the wind always blows in the same direction, correct, but it was North, as checked in Great Wall and Venice)



Proving strongest wind direction....


Top to bottom, showing room properties (flags)....


Another outdoor area in the Great wall.....


Venice.....sorry, dogs had to die in this experiment
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Old 10-09-18, 06:31   #9
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Replayed TR2 the other day and spotted something.

If you are underwater swimming, then stop still.. you can watch her braid slowly start to curve and float upwards until its completely stood on end above her.
Its pretty cool to see. Never really noticed it.
Pretty realistic for the 90s IMO
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Old 10-09-18, 09:16   #10
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I remember being really impressed by this back as a child. I still am actually. Let's not forget that this 'tiny' feature must have been performance heavy back in the day. It probably needed a lot of optimization.
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