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Questions tagged [collision]

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1answer
483 views

Issue with Collision Detection

I am not sure if I am doing something wrong or there is an issue with the Collision sensor. I have a sensor embedded on the floor, with 2 objects that are moving over it. If the two objects pass ...
1
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1answer
336 views

Shaping Bezier objects and applying Physics collisions?

Logo animation project First part is dropping chromed tubes on a floor, let them bounce and roll a bit. The rolling stops at frame 90. Second part is for the lighting to go dark, and the tubes emit ...
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0answers
196 views

Cloth with pinning and collision is not wrapping body properly

Here are my modifiers settings If I did not turn on collision on body, cloth does not wrap all sides of the body: When I turn on the collision cloth did not fit on the pinning points I am lost in ...
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0answers
155 views

A Soft body (Nurbs Circle curve) collides with a Plane but doesn't do it with Cube & other objects

The case is this: A soft body (Nurbs Circle curve) falls on the floor and on one more object. The floor is a Plane mesh, the object is a Cube mesh. Collision physics is enabled for both. The soft ...
3
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1answer
143 views

Rigid bodies collision of a piston inside a shell

I am trying to simulate with the piston constraint by putting the rigid body piston into another rigid body shell such that they can work as a piston mechanism. However, the piston inside the shell is ...
0
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1answer
634 views

Modifying the Character Collision Bounds

In the screenshot above, I have Suzanne as a character with cylindrical collision bounds. However, this is too large for me, and I want to make it narrower (along the X and Y axis) so she can go ...
3
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0answers
60 views

Solve Burr Puzzles in Blender?

There is a great software called BurrTools for the automated solving of burr puzzles, it is however sometimes a little bit cumbersome to work with. I do not think that there is any equal function ...
3
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1answer
537 views

why is my smoke blocky?

Hi all, i am basically creating a tunnel of smoke in blender 2.77, cycles. i have a flat ring mesh with a vortex underneath, and i have also added a cylinder on the outside (collision object) with a ...
1
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1answer
346 views

Animated tentacle collision / Rigid body not working

I've created some IK rigged tentacles animated with noise modifiers : (.blend file at the bottom) I'd like to create some animated tentacles that uses the rigid body system so they don't go through ...
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0answers
177 views

Rigid body go through soft body(not supposed to happen)

I want to clarify that I am really beginner with blender. I modeled a fairly simple .blend with balls that are supposed to be retrieved by a robot. At first I tried with a ball made with "rigid body" ...
4
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1answer
884 views

How to get the physics engine to wraps a string around the moving part of a motor constraint?

I'm trying to simulate the physics of a string that wraps around a motor spool when the motor turns. The body of the motor and the shaft+spool defines a motor constraint, so a velocity can be applied ...
3
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2answers
395 views

Squeezing shape by another one

I'm trying to simulate the growth of a cancer in the blood vessels in Blender 2.78c. Firstly, I created the network of blood vessels using this addon. Then, I created a simulation of the cancer with ...
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1answer
72 views

Dropping objects and groups with varying sizes and rotation to a floor with Python

I'm working on a Python script for Blender to generate 3D objects based on SVG files. One thing I'm trying to automate is dropping various objects to a floor. Each object can have varying dimensions,...
0
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1answer
62 views

Game logic with Dynamics

I'm new to the Blender Game Engine. I have several floating static cube meshes. How do I make a cube fall once it collides with my character?
7
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1answer
973 views

make soft bodies stay inside another soft body

I have a cube, with a transparent surface, and make it a soft body and drop it. It's transparent because in it are some red balls. How do I set it up so that the red balls inside the cube bounce ...
0
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1answer
745 views

Game Character walk through wall, even with Dynamic physics

Recently, I was developing a 3D Maze Game using Blender Game Engine. I set my character and maze walls physics to Dynamic with Convex Hull collision bound. when I test my game, my character walked ...
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0answers
275 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 ...
1
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1answer
643 views

Collision/Rigid body objects not moving an inch

I'm trying to make arrows fall onto a table, in order to dispose of them on the table randomly. So I enable collision/rigid body on the table, passive mode, and add collision/rigid body on an arrow, ...
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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1answer
232 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 ...
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0answers
48 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
204 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 ...
0
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1answer
125 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 ...
0
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1answer
100 views

How to stop fluid going straight through a .stl imported obstacle?

After looking for answers, I have set the resolution up to 100, changed the obstacle initialization to shell and added a Solidify modifier to the obstacle. See below
0
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1answer
261 views

How do I prevent cloth from being blown through an object?

After creating a dress and a hangar, I have given the dress cloth properties and set the collision properties for the dress and the hangar. If I just leave everything as is, the dress hangs from the ...
2
votes
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 ...
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0answers
211 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 ...
0
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1answer
170 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 ...
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0answers
208 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 ...
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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.
3
votes
1answer
109 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 ...
2
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0answers
995 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 ...
2
votes
1answer
173 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" ...
7
votes
1answer
432 views

How can I prevent boid particles from intersecting?

I'm currently doing some proof-of-concept work for a Lego-style music video with a rock band on a stage in front of an audience. My idea was to use boid particles to simulate the crowd but I'm already ...
1
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2answers
103 views

ClothFX animation not working

I'm not familiar with animation, so I'm betting it's something simple. I'm trying to do a simple cloth collision with ClothFx Haddon and it animates fine with the timeline, but will not render. I've ...
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0answers
60 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
564 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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2answers
633 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 ...
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0answers
179 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 ...
1
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2answers
3k views

Particles fall through collision object

I am trying to make leaves fall on the ground but the leaves are intersecting the ground. This is the collision floor seen from under: The object has collision enabled and Particle Damping to the ...
2
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0answers
238 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, ...
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0answers
62 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 ...
2
votes
2answers
558 views

Rigid bodies not colliding when going fast

I have a scene with (what will be) a treasure map and am trying to animate some coins falling onto it. I started based on this tutorial https://www.youtube.com/watch?v=iYL9w6xsZ6g made a coin, ...
3
votes
2answers
7k views

How do I stop hair particles going through the body and the head?

Target : I intend to have long lady hair that go swirling in the wind. I am trying to achieve that through hair dynamics. Problem: Hair are going through mesh(body and head). I am using blender 2....
0
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1answer
368 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
vote
1answer
576 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 ...
8
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1answer
3k 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 ...
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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, ...
2
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1answer
582 views

Blender: on/off collision modifier

I have a collision object with the fluid particle emitter inside. The idea is that when the fluid fills up the object, it explodes and all the particles falls out. The problem is that I can't find a ...
3
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1answer
423 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 ...