Questions tagged [collision]

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31 views

Why the cloth penetrates collision object?

I made a person and set cloth simulation to cloth. At first, simulation worked well, but after set running animation, it became not so good. As you can see, the cloth penetrates body object that I set ...
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1answer
18 views

Explosion before collision

I've got a free falling box on blender 2.82 which fractured 100 pieces before. It explodes before touching the ground plane. What can be causing this. Ground plane is passive rigid body.Box is ...
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2answers
58 views

Particles are not killed when video is rendered

I have 2 images (as planes) and a particle emmitter in between. When previewing, no particle come through the image as in this screenshot: Link When rendering the video, the particles do come through ...
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1answer
24 views

Feathered wing - how to keep feathers from colliding with eachother?

I am a brand new Blender user, but loving it. I am jumping in with my first project, to build and rig a properly functioning feathered raptor dinosaur. I've hit a roadblock trying to rig and ...
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1answer
38 views

Leaf Particles falling through plane

So I have a plane and leaf which I used as a hair particle. But the leaf is passing through the plane. What should I do? Enabling or disabling rotation doesn't change anything. These are the leaves ...
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1answer
61 views

Separate Collision Bounds

How would I add a separate collision bound for a character in Blender Game? I want to be able to detect collisions on different areas of the body and have different amounts of damage done.
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1answer
39 views

Fire collision object

I am working in EEVEE and I set up a fire simulation. I am trying to figure out though, is there a way to have my fire wrap around an object? I need it to collide with what is above it and wrap around ...
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2answers
98 views

Modify Boid collision distance with hard boundary - v2.80

Hello hello Blender community! This is the first question I'm posting, similar ones have been asked before but I was unable to get something working from the answers/comments on the questions most ...
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1answer
27 views

Why does this piece of cloth collapse if I enable 'cloth collision'?

I want the one piece to simulate as cloth, but it doesn't work. If I don't check the "cloth collision", it works correctly. But if I check it, the one piece collapses. I already tried to change some ...
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0answers
15 views

What would be the simplest way to create a vertical or horizontal cell fracture / realistic wood break?

I want to create a piece of cracking wood in blender for a project of mine, I made a blender-guru esque ball n' chain destruction setup, made a simple cell fracture wall, put a wood material on it, ...
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0answers
18 views

How can I prevent my collision objects from intersecting?

I'm trying to simulate an elastic beam draped over the edge of a box. I'm close, but the beam penetrates the corner of the box (see photo). The beam is a NurbsPath softbody and the box and floor are ...
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1answer
119 views

Cloth falls inside object rather than on top

As you can see in the picture, the blanket folds inside of the top mattress when it's supposed to fall on top. The blanket starts outside of the perimeter of the mattress but gets sucked in for some ...
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0answers
17 views

Emitter+collisions+molecular addon 2.8

My goal is to fill a cup with objects. I prefer using an emitter because it's easier to change quantity and more. I read that with molecular addon 2.8 you can achieve this by preserving collisions ...
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0answers
15 views

Low poly long coat cloth simulation

I made this model of a girl who's wearing a long coat. I want the lower part of the coat to have cloth physics. I understand how to make it simulate cloth, I know how to attach it to the rest of the ...
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1answer
285 views

Attempting to link a plane with cloth sim to an object with rigid body

Hi, I'm attempting to link this plane (with cloth sim) to the chain link above (both have rigid body). Whenever I play the animation the cloth just falls through the chain link above and they do not ...
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0answers
34 views

Understanding what “dependency cycle” means, why it happens, and if it is a cause of concern [MWE provided with cloth]

I am using Blender 2.82a. My code seems to be working but creates "Dependency Cycle" messages from the command line, so I hope to understand why they are happening and if they are a cause of concern. ...
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0answers
22 views

How to move a dense mesh irregular object above other object surface in a especific direction?

Hello I m new in Blender and I ve trying to solve the next problem for a long time but I couldn t find an appropite solution. So I m writing to you and maybe you can help me. My problem is the ...
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1answer
926 views

Making particles collide with each other? Possible? (2.8)

So I have made what is essentially an asteroid field. I did this by making half a dozen asteroid models, and then making a large cube with a couple of ‘volume’ emitters that run for a single frame. ...
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1answer
73 views

Why does my Mantaflow waterwheel not work?

Apologies if this doesn't light correctly, I omitted the HDRI I was using to save space for upload and download of the .blend. Plug in your HDRI of choice and the scene should look fine (or turn off ...
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0answers
11 views

Rigid Body Simulation colliding spheres intersect

I am trying to create a random packed bed (cylinder filled with spheres). For the cylinder I added it from the add mesh option and deleted the top face and added some thickness using solidify modifier;...
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0answers
19 views

How can I reduce the friction of Mantaflow colliding with effectors?

Just experimenting with liquids in Blender (I’ve only just got into doing fluid sims). Finished this tutorial and did some experiments of my own with collision effectors, such as some whiskey dropping ...
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1answer
195 views

How do you avoid dependency cycle between two soft bodies?

How do you setup two softbodies with collisions without getting a dependency cycle ? A depends on B through Softbody Collision B depends on A through Softbody Collision Those two objects interact ...
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0answers
61 views

How can I make Mantaflow smoke fill a collision shape?

I'm trying to achieve the effect found in this question and it's attached .blend file - however, with Mantaflow (I assume), the answer no longer works. I'd like to be able to fill a text object (...
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0answers
11 views

How can you make something both stiff and flexible at the same time?

I'm using cloth physics because soft-body is too slow to be usable. What I am trying to test is just a single blade of grass and a cube. I don't know exactly how collision works so I enabled ...
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0answers
3 views

How can I make specific vertices attracted to each other while doing a collision simulation (specifically cloth)?

I would like for the specific vertices of an object to gradually connect when I start a cloth simulation, similar to the way that you can "sew" edges of cloth planes together in dedicated cloth ...
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1answer
113 views

Bouncing ball deflates when hitting surface

Plane has a collision. The ball has a soft body. Bending of 5. turned goal off. I baked and when I animated I get the image attached, How do I keep the shape of the ball normal with a minor bending ...
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0answers
7 views

Internal Smoke Collision v2.8

I am trying to constrain some smoke in an object, but the smoke collision settings changed in v2.8, and the documentation hasn't been updated. Does anyone know how to do internal collisions? I'm ...
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0answers
13 views

Pressurized cloth object don't collide with another soft body

I'm trying to simulate an automatic tourniquet mechanism that can obstruct the blood flow when expanded fully due to inside pressure. I pinned the cloth to the outer ring and keyframed the pressure ...
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1answer
14 views

Collision Objects losing their effect

I have a scene where I have a flag blowing, and a box with a collision modifier on it. Everything is working fine, but every time i disable the collision object from the view port, they lose their ...
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0answers
10 views

Initial velicity not working if objects a close to each other, how fix that?

I need to make colliding streams of water, it will be fluid rainbow with 7 colors, but i've faced the problem((( As you can see if objects are staying separate, initial velocity working werry well, ...
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0answers
17 views

Why does my cloth simulation object not return to its original shape after colliding with an object?

I'm relatively new to Blender and currently I'm working on Blender 2.82 and trying to do a basketball animation. But I've faced a problem and couldn't solve it for days even after following tutorials ...
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2answers
75 views

particle collision is weird whith sphere object

I have a problem with a particle system and my sphere objects deep half way through my collision object, the screenshot is here:
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0answers
14 views

Spooky behavior when baking rigid body to keyframe

I have a simple animation of a wrecking ball hitting some cubes, before baking the rigid body into keyframes everything looks great, but when I do so, after the collision, some of the cubes that ...
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0answers
16 views

Collision issues in render

Sup, kinda new to the collision, I want them to collide just like in my preview but when I render they just fall through. Is there anything I need to do to avoid them not colliding in the render? I'...
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0answers
19 views

Only few hair affected by collision body in Blender 2.8

So im making a mouth model and y have this tooth brush, but when i see it in Eevee render, only few "hairs" seem to be affected by the collision body. this are my settings in Hair Dynamics Also, the ...
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0answers
7 views

Broken wall pieces aren't falling after I added collision on base plane , before it was passive and then i added collision

Everything was ok my base plane was passive and the wall which was meant to break was working properly until I added Collision on Base Plane so that particles falling from wall can interact with it ...
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0answers
19 views

Fluid simulation goes through object

I'm trying to simulate a fluid in blender with a cup, but all the while it goes through it. If someone knows how to solve it, I would appreciate it if you could explain it to me. I'm sorry for my ...
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0answers
15 views

Copying collision properties from an active object in Blender 2.82

I want to copy collision physics from one object to the others (Object->Rigid Body->Copy from active doesn't work for me). I know that I should select the ...
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1answer
37 views

PopCorn Particle Background

Anyone have an idea of how to make popcorn fill up my screen using practices, or got some video that would help me out, thanks! I am trying right now, but they keep jumping up and down and not staying ...
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0answers
16 views

How to prevent the rigging hair pass through the body, object or mesh while animated?

Greeting... I never find this problem solution for 2 years... can some one help me? Please? or blender dont have way to do this?... HERE THE FILE :
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0answers
15 views

Cloth Simulation

I don't understand why my towel when it falls in some places passes through the plate. I already enabled the collision on my plate and table. What have I done wrong?
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0answers
10 views

How to make the bone or armeture not pass trough the mesh or object?

I want to animated this bone with mesh and i'm using jiggle plugin, i want my bone have Collision and to make it not pass trough the cube and the sphere.. how to make it? thank you
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1answer
34 views

Beginner question: Collision is not working

I'm a total beginner and just finished the famous donut tutorial. Now I've started with my first own project and facing a problem that I cannot solve. I modeled a light bulb and would like to fill ...
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0answers
25 views

Some particles go straight through collision objects

As the title says, some particles don't seem to be effected by an object with collision enabled on it at all. I found a couple threads on this, but they were all really old, and the things suggested ...
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0answers
30 views

Particles collide properly in preview but not render

I’m trying to have some particles his a collision object and then slide off. What’s confusing is that the previews and even the F12 renders work and then when I go to render the animation, the ...
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0answers
24 views

Rigged Cloth, Collision not working

I have created three cloths using bones and none of them will collide. Self Collide is on and the torso part does have collision physic enabled and I have played around with the sliders to no avail. ...
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1answer
34 views

game shield in blender game engine

I am trying to make a shield that will end enemies when they come in contact with the shield. The problem is getting the shield to spawn on the character while he is moving. Any ideas? Thank u!
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2answers
194 views

How to make particles stick to mesh when Molecular Script is enabled?

I’m trying to make particles stick to a mesh and stay on it even if it moves. Setting Friction=1 seems to do the trick unless the Molecular Script is enabled. I also tried setting Stickiness=10, but ...
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1answer
86 views

Animate Collision On and Off

I have an object that a cloth is colliding with, and I want the collision to be disabled in the middle of the animation. However, I cannot just turn off object Collisions on the cloth, because there ...
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2answers
1k views

How to render LINE particles in cycles render?

I'm really struggling in visualizing line particles using cycles render... I'm trying to visualize shortwave solar radiation in a city by using the LINE option (see figure) in the particle properties....

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