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Re: Union and Negate

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cgjnm is not online. cgjnm
Joined: 22 Dec 2011
Total Posts: 2347
20 Jul 2015 04:38 PM
I am negating a spherical object in the Baseplate of my game,
(to add a sort of hole for a lake) and players cannot walk into the hole, just stay even with the baseplate's height.


How can I make it where stuff can go in to hole?
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iiEssence is not online. iiEssence
Joined: 18 Jun 2014
Total Posts: 3467
20 Jul 2015 04:39 PM
When you join the parts together, you have to make the spherical part uncollidable


I don't need a siggy
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cgjnm is not online. cgjnm
Joined: 22 Dec 2011
Total Posts: 2347
20 Jul 2015 04:39 PM
I have
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Clxver is not online. Clxver
Joined: 19 Oct 2014
Total Posts: 727
20 Jul 2015 04:39 PM
I did not know that. Thank you.
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cgjnm is not online. cgjnm
Joined: 22 Dec 2011
Total Posts: 2347
20 Jul 2015 04:40 PM
It still does not work
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ShungTzu is not online. ShungTzu
Joined: 14 Jun 2014
Total Posts: 959
20 Jul 2015 04:44 PM
Set CanCollide to true on the part that will be negative before you negate it. Negative parts are weird, not all their properties do the same thing when negated.
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championbuilder is not online. championbuilder
Joined: 20 Jan 2009
Total Posts: 13544
20 Jul 2015 04:48 PM
Cancollide does not matter when using CSG.
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iiEssence is not online. iiEssence
Joined: 18 Jun 2014
Total Posts: 3467
20 Jul 2015 04:52 PM
Yeah, you are right. It did matter when it was originally released though


I don't need a siggy
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cgjnm is not online. cgjnm
Joined: 22 Dec 2011
Total Posts: 2347
20 Jul 2015 05:14 PM
I've tried every combo with the CanCollide, and it still wont work...
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XtremeTemper is not online. XtremeTemper
Joined: 02 Mar 2012
Total Posts: 1774
20 Jul 2015 05:15 PM
wrong forum btw >_>
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cgjnm is not online. cgjnm
Joined: 22 Dec 2011
Total Posts: 2347
20 Jul 2015 05:16 PM
Posted one similar in game design
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ShungTzu is not online. ShungTzu
Joined: 14 Jun 2014
Total Posts: 959
20 Jul 2015 07:23 PM
It seems to still matter. It also matters whether or not the negative completely penetrates the part to be cut.

CanCollide was set to true on the parts making the blue, black and yellow holes, and false on the parts making the red, white and green holes, before they were negated.

None of them work exactly right, but some space can be occupied on the ones that penetrate all the way, the parts which had CanCollide set to true before negation, and none of the space can be occupied on the ones that had CanCollide set to false before negation whether they penetrate the cut part all the way or not.

http://www.roblox.com/games/269068302/NewTestZone
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EvanHolt is not online. EvanHolt
Joined: 06 Sep 2008
Total Posts: 1264
20 Jul 2015 07:31 PM
Since you're making this divot in a baseplate, which is presumably very large, the union is too large for the hitbox triangles to detect the divot. This wouldn't be an issue if Roblox allowed for more than 2500 hitbox triangles per union.

Try making the lake on a smaller part that's just big enough for the lake, then resize the baseplate and add some more parts on the other sides of the lake union and resize them to match up with the newly resized baseplate. See if that works.

[ George Orwell taught me math! 2 + 2 = 5 ]
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ShungTzu is not online. ShungTzu
Joined: 14 Jun 2014
Total Posts: 959
20 Jul 2015 07:45 PM
You're right, it works either way when you do that, but whenever I've tried to make a union that would have exceeded the limit, it threw an error and didn't make the union.
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