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Questions tagged [collision]

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3
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1answer
113 views

Stop player from climbing mountains

I want to create an open world FPS game with the BGE. Is there an option with character motion that allows the player to only walk on ground that is (for example) less steep than 10°? I don't want to ...
0
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0answers
225 views

Soft body self collision BGE

I've got the model of a hand fully rigged and programmed with a python controller, but I can't find a way to make it collide with itself, so the fingers won't "perforate" the hand. I am in Blender ...
1
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0answers
282 views

Blender Physics Simulation is Weird

First of all sorry for my english. I'm trying to make physics based short animation in blender. I'm using molecular addon but simulation isn't correct. It always pass the collision even at 16 ...
3
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1answer
2k views

Skirt collision with body

Been working with Blender for about 2+ weeks. I know this sort of question has been asked a lot but I've been struggling for a week now, trying different things to the point where I don't know what I'...
0
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2answers
732 views

how to make 2 cloths collide with each other?

I'm having a problem with a cloth simulation. I've set 2 planes up and applied a cloth modifier to each, what I want to happen is for the two cloths to fall together and interact with each other. The ...
0
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1answer
271 views

Object particle flicker and halted dynamics

I have an object particle system that seems to work fine in the OpenGL preview animation, but the final render causes flickering and the dynamics suddenly stop. Here's a video showing the final render ...
0
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0answers
50 views

Why do I get the same vertices coordinates after obj collidess although setting frame_set()?

I bake a physics simulation in a scene in which a couple of mesh objects are present. I want to obtain the vertices coordinates of one of the meshes in the scene from frame ...
1
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0answers
243 views

How to make the cloth object simulate out of my collision body in blender?

I am simulating a cloth over a body obj. I have a problem with my cloth getting inside of the body before the start of the simulation. If I apply cloth physics to the shirt and collision physics to ...
2
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1answer
2k views

Blender particle system objects not colliding

I have a simple particle System of falling balls but they won't collide to each other like in nature. What am I doing wrong, what have I forgotten? My aim is that the balls have volume and stack up ...
0
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1answer
181 views

Soft body edges in 2.78a

I've got a hand model, I've rigged it and now I'm trying to avoid the fingers passing through the hand itself. I understand that to activate Self Collision in Soft Body I have to activate "Soft Body ...
0
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0answers
229 views

Molecular Script usage

I just downloaded Molecular Script from Pyroevil. I've searched online but i can't seem to find an answer as to how do I use it or mess with its properties somesay that you just enable it but nothing ...
-2
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1answer
5k views

How to use collision?

Hey this is the first time trying to use collision and i have no idea how to use/activate it for an animation, please help. Thanks. Also i tried finding it online but had no luck.
2
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0answers
1k views

collision between RB and softbody objects?

I have been trying to get a wrecking ball to collide with an upright slab of jello, with no success so far. I've tried so many combinations of physics attributes that I can't remember them all, but ...
3
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0answers
220 views

Calculate collision point of rigid body in BGE

I have a sphere (active rigid body) that bounces on a plane (passive rigid body) and afterwards hits another plane (passive rigid body). I would like to get its coordinates when it hits the second ...
2
votes
1answer
182 views

cloth draped on a mirrored mesh: how to do it properly?

I had an interesting experience draping cloth over a mesh. The mesh was a biped, x axis mirrored. The mesh was given the Collision attribute, however... the cloth draped correctly over the "master" ...
1
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0answers
62 views

How does Mesh based collision shapes works in Rigid Body Simulation?

I kind of understand the difference between Convex Hull and Mesh shapes. But my question is how does the physics engine works for these two? In the case of the triangles how does the engine calculate ...
1
vote
1answer
609 views

How do I make two objects collide? (Not referring to rigid body or collision physics)

So what I want to do is make two objects not clip when touching each other, instead "following" the shape of the mesh. Basically I want the cylinder shown in this example to go over the pipe when ...
0
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1answer
94 views

Moving objects whilst in animation

I would like to make a collision with two objects whilst freely moving once object over the other in real time. Is there a way to do this in Blender?
0
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0answers
196 views

Lie object on a surface

I'm trying to lie a object on a surface for 3D printing it afterwards. In other words, I want to find a way to automatically position a complex object the best way on a printing table. Here is a ...
2
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0answers
256 views

Prevent particles from growing through primitives

For a static scene I've modelled grass on a plane using the particle system's hair type. Now I want to place some objects on the grassy plane, some of which are rather small in height. Unfortunately, ...
1
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0answers
66 views

Bullet particles not colliding with cell fractured model

I have a particle system emitting a bullet object with collision and rigid body. I have it so the particles collide with a cell fractured object which also has collision and rigid body. I have tried ...
8
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1answer
4k views

How do i create low lying smoke (similar to Zootopia), in blender

Hello Blender community, I am a huge fan of the Disney movie Zootopia, the amount of physics and detail really drew me into 3D animation and design. Although I always had an interest in 3D ...
0
votes
1answer
397 views

Why does a rigid body with Convex Hull collision bounds not move in BGE?

I have an object whose physic is Rigid Body, and I set its collision bounds to Convex Hull (else it would collide with its own children) but now it doesn't move when I play, and doesn't even fall on ...
1
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1answer
630 views

Cloth simulation breaks mesh

I wanted to simulate a cloth ribbon wrapped around a guitar. After baking a cloth simulation however, the ribbon breaks into individual pieces and I have no idea why. Can you help me? Ribbon was ...
0
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0answers
43 views

Containing a hair's shape within a mesh, even with vertex groups: Is it possible?

Is there any way to contain the shape of hair within a mesh? Would it need vertex groups for more than density? I want to put hair inside a mesh, make the mesh invisible while containing the hair, ...
3
votes
1answer
455 views

Is it possible to make a car with this kind of functional axle?

I was trying to make a car and make the axle "work" mechanically. My idea was to make an axle with a flat end and a wheel that would enclose around it like this: Only, when I give these objects rigid ...
0
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0answers
1k views

NSFW Soft body breast acting odd

I have been struggling all day with trying to figure out why the collision is not working on the right breast when the right arm or hand touch it. I threw together a real quick animation and as you'...
4
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0answers
220 views

Rotate object when colliding

I have a question regarding collisions in blender. I'm trying to animate shortwave radiation (particle system) which reflects on different materials. However when i apply a collision the 'solar ...
0
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2answers
2k views

blender cloth simulation not simulating properly with collision

im trying to get the hang of blender cloth simulation for an upcoming project of mine but for some reason when i add collision to the human its attached to so as to allow it respond with physics..it ...
1
vote
1answer
3k views

Stop hair from falling through emitter mesh

I have a simple sphere with a hair particle system on it. When I add hair dynamics, the hair simply falls through the mesh. I would like the hair to fall around the mesh and collide with it (both ...
2
votes
1answer
71 views

Change collision properties through time

I've recently started working with blender. For a project i'm working on i would like to visualize evapotranspiration of a park. My animation starts with nighttime where dew is created (picture 1) ...
1
vote
1answer
276 views

Why do particles escape from the tube?

I am very new to blender and only started in February this year and I currently got stuck with a very specific problem. I am doing a project where I want to have bubbles inside a glass tube. I did ...
1
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0answers
136 views

Make particles appeared when colliding with a object

I wanna make a particle simulation where the particles would appeared when colliding with an object. My setup is this : Particles are being emitted from a plane. Wind is pushing the particles toward ...
1
vote
1answer
103 views

Coordinates of non-animated object in frames with python [v.2.77]

I want to create a few animations of a flying ball with initial velocity and get its collision point with a wall. Therefore I created a sphere and 2 keyframes (using animated option in rigid body). At ...
1
vote
1answer
782 views

How to wrap an object around a cloth and “squeeze” the cloth, like a napkin ring or rag on a jar

You know the way you'll sometimes see someone with a rag tied over a jar? I tried to make this effect with a jar and a ring (torus) where the cloth falls over the top of the jar (this part works ...
2
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0answers
1k views

How to prevent hair particles from going through the mesh

How can I prevent hair strands from going through the mesh in other way than using force field so the outcome is like A or B shown on the picture? I've tried using collision with hair dynamics but ...
8
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1answer
758 views

Boids avoid collision?

Im trying to make a flock of birds in a massive cage using boids. But they keep flying through the walls. How do I tell them to stay in the cage?
2
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0answers
334 views

Smoke simulation collision distance padding

I am simulating smoke around building rubble. I have the buildings set as smoke collision objects. However, the smoke seems to leave a huge collision padding around my objects. The buildings are to ...
4
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1answer
1k views

How, specifically, does the game engines friction work?

I have a dynamic physics-typed object. Its material has an option for the amount of friction: Here is what it tells us: Well, refer to the first picture. We see, ...