Questions tagged [collision]

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Rigid Body Physics - Mesh collision not working

New to blender, and have hit a wall getting a test scene to work. Funnily enough, the wall I've hit is that I cannot get my rigid body geometry to hit a wall! I am creating a galton box simulation to ...
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1answer
188 views

Detect two objects colliding, and write the frame number when collision happened

Yes, I know it is similar to this question, but I want further explanation. I would like to detect two objects colliding, and write the frame number if on that frame the collision happened. Collision ...
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2answers
334 views

Particle Collision Object for some particles but not others?

Newb here. I have particles coming from two different emitters inside a sphere. I want the particles from one emitter to collide with the sphere, staying inside it, but I want the particles from the ...
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0answers
167 views

Export ONLY face normals of a mesh

I'm very new to Blender and just trying to accomplish some simple meshes for my game project. In the process of developing some collision meshes I'm looking to create some meshes that ONLY export the ...
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1answer
4k views

Soft body and collision don't work

I am beginner in Blender. When I try to make a bouncing ball (UV sphere marked as "soft body") on the Plane (mark as collision), sometimes the ball falls through the plane. Or when it works ...
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0answers
409 views

Testing for overlap or collision while adding objects via Python?

My understanding is that objects can be added programmatically in Python fairly simply, such as: ...
2
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1answer
167 views

Detect walls and prevent player from jumping on them

My main goal is to have the best jumping experience - (Keep jumping up and down when spacebar is held down, longer jumps when spacebar is held longer), where there is no wall jumps. Currently, minus ...
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1answer
49 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
1k views

Making particles pile up on the floor

I have a simple scene. I'm using a particle system but the particles don't collide with the floor. They disappear after reaching the floor. I would like the particle to settle on the floor after being ...
3
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1answer
312 views

Molecular particles keep sinking down

using the Molecular script with a particle emitter to form a pile of spheres. The behavior so far is great however the particles keep sinking in to touch the floor (collier) like this. How to make ...
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1answer
767 views

how to make one object not pass through another in blender

I am relatively new to blender. I am making a model of a crate that is going to contain some fruits. I don't want the fruits to pass through the crates nor the fruits to pass through/overlap each ...
1
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1answer
79 views

Animation with physics, UV sphere can't fall through the ''empty'

I've got the problem while creating animation with physics in Blender. So I have two spheres and a tank. The aim is to get both spheres come through this tank. 1) Yellow sphere animation is based on ...
2
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1answer
316 views

Particle system and controlling the collision on surface on/off dependent on the emitting geometry?

I have three geometries, two point geometries emit particles in a line, like a laser beam, and the third is a plane. I could set the third, the mirror, to collide with the two particle streams. Now, ...
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1answer
3k views

How to create mesh collider for a blender model

I have built a house model in blender. I want to add collider to it's interior and exterior walls. How do I do that?
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1answer
225 views

(Blender Game Engine) Walk and Run cycle sound problems

This has not bothered me for a while. But when working on the finishing touches of my game I seem to rather have it fixed than to keep it that way.* My problem is simple. When I walk the 'Walk'sound ...
2
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1answer
163 views

How to propel an object, rotating freely in zero gravity, towards a collision with a fixed plane?

I downloaded a model of an astronaut from the NASA website, and I'm trying to create an animation with it to import into a Premiere video project, but I'm just a beginner at Blender and am having some ...
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0answers
63 views

Origin Points (and Colliders) Not Moving with Armature

I don't know if this has already been addressed elsewhere, but I couldn't seem to find any information on this issue. I'm trying to make a chain of rigid bodies using bones and empty axis(s) with ...
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1answer
516 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 ...
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1answer
385 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
212 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
165 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
178 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 ...
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1answer
694 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 ...
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0answers
63 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
668 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 ...
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1answer
389 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
186 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
1k 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
433 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
84 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,...
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1answer
70 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?
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1answer
1k 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 ...
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1answer
818 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
279 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 ...
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1answer
715 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'...
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1answer
259 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
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 ...
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0answers
232 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 ...
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1answer
166 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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1answer
109 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
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1answer
275 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 ...
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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 ...
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0answers
224 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 ...
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1answer
176 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
226 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
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1answer
112 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
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 ...
2
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1answer
179 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" ...