Questions tagged [collision]

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2answers
8k 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....
3
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1answer
155 views

Soft body friction

I want to create in blender a scene like this one, attached here. I have a past in cinema 4d, there was very easy to create this. I tried in blender in this way: I create a soft body sphere and a ...
2
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0answers
48 views

Trigger particle emission on collision with another particle system

I have a particle system A whose particles have been already emitted. Now when these particles collide with Particle Emitter B, I want B to start emitting particles. How should I go about doing this?...
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0answers
37 views

animating a collision with an object following a path

I have this idea that looks pretty simple in my head, but turned out to be pretty hard to animate. I've got this animated bee that is flying along a path, and i want it to collide into an object, ...
1
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1answer
52 views

How do I make a molecular “cloth” which I can drop some objects onto?

Basically what I want to try to create is similar to this: https://www.youtube.com/watch?v=UhuOsg06oOs&list=LLl-SOEftSFSK6xy1vylYL8g&index=8&t=0s I've downloaded molecular and cube ...
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0answers
119 views

Collision phisycs in cycles using metaball particles

I am trying to make metaball particles collide with an object. Using the collide feature in the physics tab in blender 2.8. It is looking great in the render preview window but whenever I render it, ...
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0answers
93 views

2.8 Beta Walk/Fly Mode No Wall Collisions?

Is there any way to add collision to walls when in walking mode. i'm trying to explore my scene without walking through walls and falling off into the void. yeah i know there's fly mode also, but ...
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0answers
30 views

How to get collided objects? (Python)

I want to know what objects are collided. Is it possible to do with existing Blender’s Python API?
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0answers
35 views

Collision in .obj file

I am completely new to Blender and I have never done anything with 3D. Currently I have some .obj files and I want to understand them. I downloaded source code for ...
0
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0answers
94 views

Enable collisions with targets and objects (Animation Nodes)

So I'm using animation nodes to generate a nice sinusoid as pictured below. See Omar's answer here for more information. I want this sinusoid to collide with the cube face and "bounce" off. If I ...
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 ...
1
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1answer
93 views

Simulating an egg on a conveyor belt getting smashed

I have a short animation of an egg shape (solid w/o liquid) and the egg is on a conveyor belt (follows directional movement of belt via driver) then was supposed to have the egg get smashed by a large ...
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0answers
54 views

How to make an object change its color when it collides with another?

I think the title explains it well. I want to make two objects collide and change the color of one of them. How can I do this using physics, in cycles? Thanks.
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0answers
84 views

Fluid simulation obstacle collision

I am playing around with a fluid simulation however as you an see in the picture the liquid is not touching the bottom of the pool. Instead if collides at the height of the pool border … I created the ...
1
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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 ...
7
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0answers
104 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 ...
3
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2answers
205 views

Glowing/outline effect when particle and object are colliding

How to do a glow/outline of collision effect when particles (objects with same size in a group) are entering other object? For example when a small box particle is falling into a plane (will fall ...
11
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3answers
5k views

Soft body to Soft body collision

Is it possible to have two (or more) Soft body objects collide in Blender? I have tried enabling self-collision, but distinct objects don't seem to interact with each other at all.
1
vote
1answer
306 views

How to make particles collide on face instead of median point?

I made a scene where particles collide with a plane, but the particles seem to collide on their median point: i want it to collide with their faces, so their faces don't go through the plane... is ...
2
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1answer
610 views

Rigid Body Mesh Collisions: Objects falling through each other

I have a scene that I need to run simulations on, and quite a few of the collision shapes need to be set to mesh. This works fine for most objects but there are some that are acting weird, basically ...
3
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0answers
50 views

Collision Object for particle system

The hair you see in the picture is created with a particle system on a vertex group. The hat is a separate object. Is there any way to make the hat a collision object so that the hair stops when it ...
2
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0answers
110 views

Smoke/Liquid Ignoring collision object during simulation

I’m fairly new to Blender and modeling in general, and I’m running into trouble with running simulations (smoke, fire, liquid, etc). I’m trying to produce simulations to be used in a projection ...
1
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1answer
50 views

How to exclude smoke from collision mesh

I am trying to achieve an effect where I drive an invisible cone through a simple smoke domain, which clears the smoke from the cone-shaped region. I'm planning to make the cone invisible by disabling ...
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0answers
46 views

Quick question about smoke collision

I'm currently making a low poly desert island for college, which has a volcano and smoke that emits from the top. I've set up a cone at very top facing down, which works as a collider, so the smoke ...
1
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1answer
34 views

Soft body collisions give missing cache error

Sounds like I'm having the same issue as this question (Missing cache error) but since that has no answers, I figured I'd post this question with a working example of my issue. I have a bunch of ...
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0answers
38 views

Is it possible to have solid objects in pose mode?

I want to create a run cycle and have my characters feet stop and bend on the ground, which is just a plane so that its perfectly flat footed, among other reasons. Is it possible to set this collision ...
-2
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1answer
325 views

Collision detection during active modelling

I'm a newbie in Blender and I'm scripting in Python a routine that arranges irregular bodies according to a placement algorithm (Using AI and self-learning methods). The problem I have so far is that ...
0
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1answer
645 views

Using Blender with cell fracture and trying to add collision via Python

Using Blender with cell fracture I have created a code that should select the objects created by cell fracture and give them the collision attribute and it does but only one out of a 1000. So it doesn'...
2
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1answer
601 views

How to have multiple soft bodies in a single object?

I want to use soft body physics on a human character. It means breasts physics is different than butt, thighs or belly. Is there any way to apply multiple soft bodies on single object? Like vertex ...
3
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1answer
180 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
198 views

My character with soft body still go through wall a little (animation)

I have A character with softbody (and ik armature if you are wondering),A wall,Collision enable The character deforms itself on the wall as i want but some of the mesh still passes through the wall. ...
1
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1answer
421 views

Collision bounds for 2D Sprites in the Blender Game Engine

How can I make Collision bounds for 2D sprites in the BGE? (The 2D sprite I am trying to make collision bounds for is the image I attached below). I imported the 2D sprites as planes with the "Import ...
1
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2answers
106 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 ...
2
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2answers
363 views

Can you have mesh particles that don’t intersect?

Hey there I’m just wondering what I should be using if I’m after this result where there’s scattered randomly rotated pills that aren’t intersecting each other like this… istock example At the ...
1
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2answers
573 views

Smoke constrained by objects

I have a smoke emitter that is under a rocket (but not touching anything). It emits smoke, but the smoke just sits there in a bubble. It doesn't flow. If I move the emitter away from the collision ...
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0answers
42 views

How make hand touch without going through?

I want to make two hand touch each other without than going through one another.
2
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2answers
611 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, ...
2
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1answer
36 views

Is there anyway to make particles have an influence area around them that will let them collide, without having to turn them into rigid bodies?

I want to make a particle simulation, however, is there any way to set a sphere as a child and then set an "influence radius" around each particle as like a collision box? I know you can set them to ...
1
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1answer
61 views

How do I achieve a bending effect with the collision of two rectangles?

I am trying my best to re-word the problem I am having. I have 3 objects bounded on top of each other. I will call that square 1. I have duplicated square 1. The duplicated object is named square 2. ...
0
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1answer
116 views

Collision logic brick not detecting collision in BGE

I am making a game in the BGE and I don't want my character going off the platform. I have is set to quit the game when that happens (I am going to change that later), and the walls let him pass right ...
0
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1answer
788 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
383 views

Objects and physics not being rendered

I was working on a scene with 2 groups of particles that were supposed to collide with an object. I set the physics on the "collision object" to collision, in the preview the particles did collide, ...
2
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2answers
2k views

Soft Body object going through object with Collision?

I have these balls with Soft Body on, when the cylinders are still, they interact with them without issue and bounce off of them. But I animated the cylinders to move side to side (sort of like an ...
1
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0answers
32 views

Define died after collision particles via Particle Info node

Usual "death" means Age/Lifetime ratio is 1. This is simple to define with corresponding outputs of Particle Info node, but how to deal with particles killed by collision? Maybe some math involving ...
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0answers
211 views

Blender - Undefined Socket Type in animation Node

I am trying to learn the function "Particles Stick to side faces". Particles stick to side faces However, I installed animation node in blender and find some source node in the node editor become ...
4
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1answer
500 views

How to ensure accurate rigid body simulation with many small objects

I am attempting to fill a cup with small capsules to create the effect of sprinkles sitting in a bowl. To do this, I have been using rigid body simulations to pour the sprinkles into the cup and then ...
0
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0answers
69 views

How to suspend an object from two points

I'm looking to create a physics animation of a guitar slung over a body using its sling. So there's one body which acts as a parent and collision object. A sling / two slings (made to look like one ...
0
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1answer
32 views

Blender collision activation only once

I have it so that once you touch this block, my voice actress begins giving a tutorial, but if you touch it again, she starts all over again, do you know a way to make this happen only once?
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0answers
36 views

Invisible wall in cycle [duplicate]

I have a basic cube mesh that i currently use as a wall And a basic ball mesh deforming itself on it as my animation How can make the cube invisible BUT keeping the interactions between the two ...
0
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0answers
28 views

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, ...