Questions tagged [collision]

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softbodies collision problem

I have 2 balls (softbody) falling one after the other. The Softbody1 goes first. When the second Softbody2 reaches the initial position of Softbody1 it collides with it, but Softbody1 is already gone, ...
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1answer
193 views

Create a shower hose with correct physics

I'm making a shower hose that follows the handle when it moves. I've created it successfully following THIS tutorial, but the hose is too "elasticy". I'm wondering which settings I should change (...
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0answers
134 views

How to make Terrain Convex Hull Collision?

I'm trying to make Convex collision for terrain, and I cant seem to get it correct. I want to keep low datablocks if possible but I'd also like it to be very accurate. I've tried using VHACD to make ...
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1answer
29 views

How to make an object be sensed if it is No Collision in BGE

I am making a space game, but I need to make a boundary. I have four cubes and I'm using a property sensor to detect them and then display text, but I don't want the spaceship to collide with them and ...
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2answers
115 views

Building a Chess Board with Particles

I'd like to create an animation of squares falling down (1) to form a chess board. The squares would be falling in sequence and once at field level a chess part will emerge from it resizing from 0% ...
3
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1answer
318 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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2answers
490 views

Modify the size and location of the Rigid Body Collision Object

Maybe I'm just spoiled by Unity3D, but I would like to reposition and resize the Rigid Body Collision Object of an object in my scene. Is there currently an established method to accomplish this? In ...
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2answers
338 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
119 views

making a character mesh collide with surfaces

I'm wondering if there is a way to make it so that my character mesh collides with all other surfaces in the animation process so that i don't accidentally put feet through the floor or fingers ...
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1answer
737 views

Soft Body Object-Collision Object Interaction Not Working

Thanks in advance to this wonderful community that has helped me a ton on the way. With that preface, here is my problem. I am trying to get the most basic of simulation to work correctly. The top ...
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0answers
244 views

Making objects fall into a pile with Particle Emitter [duplicate]

I am trying to make objects fall onto a plane and actually pile up like normal objects would. Instead of that, the objects fall, bounce around a few times, and end up merging with each other until ...
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1answer
273 views

I want the Cloth to drape over the cup, but It creates gap between them

Can someone tell me why this happens? I created a plane, subdivided it to 50, and smoothed it, and went to the physics, and clicked on cloth, then selected the cup, saucer and plane and went to ...
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0answers
38 views

Why do my objects “glide” when they collide

I try to let some Tetris blocks fall on to each other. But for some unclear reasoning, they both move apart after the collision. I expect the object which falls, just simple "sit" on top of the other ...
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1answer
71 views

Blender object sensor doesn't exist

When spawning an object into a game, I check its hit objects from my master python script, accessing the object spawned in. For some reason, the "Collision" sensor does not exist in the object, ...
6
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1answer
928 views

What causes this weird collision?

Pretty sure that there is some answer to this already somewhere since it seems such a basic action. But I could not find an answer to it. Maybe since I just started with Blender, I just don't know the ...
5
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1answer
824 views

How to make skin reacting to touch

When you punch someone, skin will deform, same if you squeez your leg or other body part. I want this effect, because i'm making animation concentrated on interaction between characters. I tried to do ...
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2answers
1k views

Cloth physics/clipping

I've added physics to my objects but the cloth clips on the cube's edges. Why is that? https://gfycat.com/GoodIcyAustraliancurlew
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0answers
109 views

Collision and cloth modifier don't work

I would like to use the collision and the cloth modifier to fit perfectly the shirt and the pants (created with adobe fuse) to the body of my character. I've created the character with the manuel ...
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0answers
27 views

How change origin from object with collision area without change pivot area of collision?

Please look the pictures. Have a explanation on the pics Please help me if possible.its for spawn correct ragdoll object to position of the box. Thanks
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0answers
655 views

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
192 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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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 ...
4
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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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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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0answers
411 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: ...
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1answer
2k 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 ...
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1answer
110 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
82 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
317 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?
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 ...
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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 ...
6
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1answer
871 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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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 ...
2
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1answer
658 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 ...
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0answers
214 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
166 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 ...
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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 ...
3
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1answer
673 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 ...
3
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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 ...
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1answer
390 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" ...
3
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2answers
436 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 ...
7
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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
85 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
721 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, ...
7
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1answer
464 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 ...
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1answer
822 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 ...
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 ...