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Questions tagged [collision]

The tag has no usage guidance.

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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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11 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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17 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 ...
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0answers
35 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 ...
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1answer
60 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
20 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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35 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
18 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 ...
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1answer
55 views

How to make an (open) object behave like rubber when penetrated by another

So uh i've got this problem with a penetrating object and another object that serves as something like a condom if you will So what I want, is for the penetrating object to not deform while moving ...
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2answers
127 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 ...
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0answers
57 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 ...
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1answer
18 views

game shield in blender game engine

I am trying to make a shield that will end enemies when they come in contact with the shield. The problem is getting the shield to spawn on the character while he is moving. Any ideas? Thank u!
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36 views

Interactive Phsics Modelling

I would like to re-phrase and narrow a question about physics animation while modelling. This question below was aksed, and it's similar to the question I am asking. Is it possible to interactively ...
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How can I realize “sticky” collision, i.e. that objects connect as soon as they touch?

I'm fairly new to Blender (great piece of software btw), so please bare with me. I'd like to have multiple spheres (up to 50), which move randomly in space and as soon as two spheres collide they ...
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1answer
98 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 ...
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0answers
33 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 ...
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0answers
50 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 ...
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1answer
27 views

Boid Particle System Collison Objects

I'm looking for my boid particles to not intersect with my collison objects. I already changed the mesh to collision, and there are tiny areas where the dragonflies still pass through the mesh, as you ...
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1answer
26 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
35 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 ...
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1answer
27 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
20 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 ...
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1answer
111 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 ...
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0answers
41 views

Missing cache error

My simulation runs at 1 FPS and I noticed my console is spammed by "missing cache error". If I opened my blend file : everything's OK. If I edit a mesh (enter and exit edit mode with no change) : 1 ...
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2answers
145 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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1answer
33 views

Proper deformation of body mesh?

i've model a body rigg it and weight paint it and now that i want to make poses with it i realize that i have a few problems, but the real problem is that when two part of the body clash together one ...
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0answers
32 views

How make hand touch without going through?

I want to make two hand touch each other without than going through one another.
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1answer
21 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 ...
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1answer
55 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 ...
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1answer
59 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. ...
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0answers
60 views

Collision detection for wheels for detecting vehicle air when using vehicle simulator

I'm using the vehicle constraint to simulate a vehicle in Blender Game. The documentation instructs to set the collision on the wheels to None. Hence The collision sensor doesn't work with the wheels....
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1answer
101 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, ...
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0answers
41 views

How do you create a particle system that has animation tied to dying particles?

As an example, I am trying to create an animation that emits particles that need to explode/crumble when the particle collides with another object. I am not sure however, how to trigger these events, ...
2
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2answers
685 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 ...
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0answers
28 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
124 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 ...
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0answers
41 views

Fractured object breaks apart before hitting collision surface

I have a fractured object that I am dropping at frame 1 onto a solid, passive surface. However, the object shatters as it begins to fall, and is already in pieces before it hits the ground. I have ...
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0answers
36 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 ...
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2answers
98 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 ...
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0answers
28 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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1answer
101 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. ...
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1answer
27 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
15 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, ...
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1answer
225 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 ...
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0answers
64 views

cloth simulation failed (jittery)

i need help can someone help me? i using cloth simulator and it seem's there is something wrong with my cloth and when i animate it it became jittery... i wonder whats wrong? especially the collar it ...
2
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1answer
103 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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1answer
47 views

How to achieve pressing against invisible wall effect facing camera? (animation)

i'm quite new to blender. I'm making some animations and i would like to reproduce this effect Not only for the tongue,any part of the body ( hand/foot/derrière/chest ) To resume ,a character ...
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0answers
14 views

collisions not detecting

I have two slates, one of which is driven by a motor. When the slate rotates 180 degrees, a handle falls down and hits the second slate so the would rotate together. However, the handle does not seem ...
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0answers
22 views

Rigid body objects resist falling and acting like a group

After starting the simulation, when the objects hit the top part of the pizza, they slants down and resist falling and acting like plane even though all the objects have individual origin and are ...
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0answers
93 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 ...