Questions tagged [meshcollider]
The meshcollider tag has no summary.
49 questions
0
votes
2
answers
215
views
How can I detect collision between a box and a minimum poly collision mesh?
Mostly a C++ newbie, trying to do a 3D game in Raylib.
I have a set of fairly irregular meshes that I'd like to see if a box collider has penetrated. For this project, a fairly high level of accuracy ...
- 171
0
votes
0
answers
103
views
"Mesh is empty!" error when generating collision shape from mesh
I have a very basic mesh imported for this example. I just resized the default blender cube to a more plane-like structure and exported it into glb and then imported it in Godot.
In Godot, I created a ...
0
votes
0
answers
91
views
Setting a meshcollider's sharedmesh to a mesh which has been generated directly on the GPU gives "Failed extracting collision mesh"
I've been attempting to modify this example project
https://github.com/keijiro/ComputeMarchingCubes
I'm trying to repurpose it to build terrain. After the Update() ...
0
votes
1
answer
290
views
How can I make colliders-only visible in Godot?
Specifically, I'm looking for any way to see a collision-only item from a Mesh Library in a GridMap. (The tag says "tile map", which it technically isn't; but there's no option for a grid ...
- 754
0
votes
1
answer
295
views
Wheel Colliders falling through ground
I have read through hours of forums and tried everything, But this issue still persists. I have attached a video showing the issue as well as all of my collider settings. Any help would be appreciated....
- 1
0
votes
1
answer
1k
views
Why doesn't MeshCollider work in a build?
I have MeshColliders in my scene that are shaped like an hourglass and it works perfectly fine in the editor. However, once I build on XCode and test on my iPhone, ...
12
votes
2
answers
4k
views
Moving player inside of moving spaceship?
INTRO:
I am trying to achieve a spaceship that flies through space and the pilot can get out of their seat and walk around the ship and place physics objects in it while the ship is moving, rotating, ...
- 289
0
votes
1
answer
430
views
My First Person Player Capsule Is Always About 6 inches Under The Floor
Here is the problem. This is the exterior of the hallway in which my player capsule is standing. Notice the bottom of the capsule poking through the floor.
This is the interior of the hallway, notice ...
- 151
0
votes
0
answers
58
views
Unity - using Colliders with custom objects
Hi so I'm quite new to Unity and currently experiencing issues with colliders, a quick summary of what I have.
Player >
...
- 1
2
votes
1
answer
1k
views
Optimizing 3D tile-based geometry
For my game, I have a tool that lets me quickly create map geometry. You can see a (albeit early version) demo of the tool here. The main problem with the tool is that even a semi-large map can EASILY ...
- 137
0
votes
0
answers
109
views
Auto-generate optimal direction for Unity Raycast with specifications
How can I have a Physics.Raycast auto-generate a direction for itself to try to hit a given target through a restricted window of space?
[Update]
After much work, ...
- 105
0
votes
1
answer
604
views
Mesh getting offset on combine because of worldmatrix
When I try to combine my mesh, it get offset to an other position, but the collider is still at the same place (because i dont delete and add it again). I saw a fix on internet that is to do:
...
- 372
0
votes
0
answers
2k
views
Unity Raycasting only hitting mesh colliders from particular directions
I have a game which involves clicking to select some objects. Each of the objects has a mesh collider attached to it so that objects can be clicked, handled by the following:
...
- 121
0
votes
1
answer
240
views
Why is my mesh outside its collision component grid?
I've created a blueprint (well, two of them, as a test since the first one wasn't working right) with an sphere component around a mesh, as in the picture:
As you can see, the mesh is well placed ...
- 101
1
vote
1
answer
615
views
Why do my NPC's fall through the world when I select them as triggers?
I'm making a game in Unity where when the player comes into contact with an NPC it will switch scenes. I have the code for it and made sure all NPC's have rigidbody as well as using gravity and convex....
0
votes
1
answer
384
views
How can I set my non-convex object's collision to a more detailed one to allow other objects to go underneath?
My problem is simple. I imported a 3D object (it's not convex) and I want the character to go under your legs.
But this does not happen:
There seems to be a way to do this, I just do not know which ...
- 681
0
votes
1
answer
608
views
How do i prevent my player from walking through mesh collider
I have a character being moved using rigidbody.moveposition and I have an floating lowpoly island with a mesh collider. When my player walks into a steep slope or a wall, it passes right through. I ...
- 136
2
votes
1
answer
2k
views
Unity SphereCast HitInfo Give me an interpolation of the normal surface?
I'm doing a SphereCast for a GroundCheck of a player.
I have my Raycast hitInfo, and here in the picture at the left, I Debug.drawRay in black the direction of the hitInfo.normal every frame
It seems ...
- 281
0
votes
2
answers
856
views
Sometimes can't use the rendered mesh as a collider in Unity?
Most of the times I can use the Mesh Filter's mesh as collider in Mesh Collider
But sometimes there is just nothing. No ...
- 801
1
vote
1
answer
12k
views
How to check for mesh overlap?
I'm creating a level editor in Unity. I need to detect when an object is intersecting another as I don't want to allow the user to place an object when it is colliding with something else.
In the ...
- 2,779
1
vote
1
answer
306
views
How do I determine distance of a point within a ProBuilder mesh?
As in the title, I have an effect prepped for my game which applies certain derived parameters to a post-processing effect after the player enters a boundary I created with ProBuilder. Finding how far ...
- 754
2
votes
2
answers
1k
views
Why does Unity's MeshCollider only use SharedMesh?
For components like MeshRenderer, Unity uses two references to mesh through script--mesh, and sharedMesh. My understanding as of yet that setting a "sharedMesh" will affect every GameObject that uses ...
- 754
1
vote
1
answer
5k
views
How can I apply a mesh collider in Unity to an entire imported model rather than a single piece?
I have a series of models from Blender I'm importing to Unity as .blend files and I need mesh colliders applied to each one.
What I'm finding is that with any model that is constructed of multiple ...
- 261
0
votes
1
answer
465
views
Trouble with assigning a model's own mesh to a mesh collider in Unity
I'm trying to use a mesh collider on the player's avatar, rather than the box collider.
I've added the mesh collider to the game object (which also has a rigid body) and selected the "convex" ...
- 261
4
votes
2
answers
3k
views
Unity: Create large Terrain with accurate raycast detection?
I'm not using the Unity Terrain because it lacks certain features.
Amongst them, you cannot tile them:
You cannot create concave walls or make holes in it:
No custom textures, no detail textures, ...
- 679
6
votes
3
answers
30k
views
How is a Mesh Collider "performance expensive"?
Do Mesh Colliders slow down performance simply by existing or only
when they are colliding?
Do they directly impact FPS or do they slow down the in-game physics?
- 679
3
votes
1
answer
12k
views
Unity - How do I make non-convex Meshes collide with physics?
Whenever I add a Rigidbody component to an object with a non-Convex Mesh, Unity throws this error:
Non-convex MeshCollider with non-kinematic Rigidbody is no longer supported in Unity 5.
If you ...
- 437
0
votes
1
answer
590
views
Raycast drawing and hitting limited to inside cylinder
I'm trying to get a very basic "radar" system to work. Right now, I'm not even scanning, just looking at a known target location.
...
- 103
1
vote
1
answer
2k
views
Unity5 using non-convex meshcollider with rigidbody
I want to build a car using wheel collider, mesh collider and rigidbody. The problem is that unity wants the meshcollider to be convex, and that cannot happen because my base model is bigger than 255 ...
- 23
0
votes
2
answers
1k
views
Detecting when a car is out of the track
I am completely new to Unity 3D, just started to follow some tutorials y'day. I am trying to build a 2D car racing game as a part of my learning (time beating, no opponents). I have a racing track as ...
- 101
0
votes
1
answer
4k
views
Can you get polygon collider 2d shape from a sprite?
When you create an object with polygon collider 2d from inspector, unity automatically generates polygon collider that approximately fits the sprite. My question is if there is a way to do that when ...
- 155
24
votes
4
answers
10k
views
Should a wall be created as a plane or as a box?
What are the benefits of a wall being as a plane or as a box? Should I use a plane with a box collider instead of mesh collider?
- 377
4
votes
0
answers
1k
views
Unity & Alternatives to non-convex collider + non-kinematic rigidbody
I am working on a voxel game, where everything is one or more chunks of voxels (16x16x16).
As voxels can be destroyed the chunk and collision area changes and can of course become non convex.
So to ...
- 479
6
votes
4
answers
18k
views
How to create a box collider that surrounds an object and its children?
I have a car that needs a box collider.
If the car were 1 single mesh, I would only need to call:
boxCol = gameObject.AddComponent<BoxCollider>();
...
- 1,480
1
vote
2
answers
478
views
Replace PolygonCollider2D with MeshCollider at runtime
I am using a PolygonCollider2D to load in points for a MeshCollider at runtime, but am having issues switching between the two at runtime using good coding practices.
This is a simplified version of ...
- 93
3
votes
0
answers
1k
views
Unity raycast misses convex mesh collider
I have a bunch of fighter AIs that are doing attack runs on a target (Currently just a cylinder).
It is designed to veer off course the moment it gets too close and loop around for another attack ...
- 1,441
-1
votes
1
answer
945
views
How to give a mesh collider gravity 5.0
I was trying to make a simulation of an object that needs gravity to work, a hydraulic movement-assistance system for disabled people. All parts are aligned properly, all objects have mesh colliders ...
- 3
1
vote
0
answers
96
views
How to create words as objects in Unity?
I am working on a game that has words as obstacles, i.e. the player needs to climb over and around them. There will be hundreds of words in the game therefore I need a way to automate the placement. I ...
0
votes
0
answers
218
views
How to prevent object from moving when it's mesh/collider is being updated?
So I a made a script that lets the player grab a vertex, move it, and then update the mesh. To help prevent the player from trying to clip it through other objects I made it so the mesh/collider is ...
- 319
2
votes
1
answer
3k
views
Unity mesh collider detecting collision on object empty inside
I'm trying to get my first 3D game done with Unity. In this game the character will be flying through some rings.
I made the ring asset with MagicaVoxel, exported it in .obj and reimported in Unity ...
- 147
7
votes
2
answers
10k
views
How do I fix the bug where my Rigidbody gets stuck on the edge of two Colliders?
The boxes are standing right next to each other, but somehow, the player manages to collide with the ghost edge. I use AddForce to control the player with a Box ...
- 181
4
votes
1
answer
2k
views
Matching collider to character mesh size in different postures
What's the optimal method in Unity to match the size of a Capsule Collider to the actual size of the game object it is part of?
To understand what I'm trying to do ...
- 873
3
votes
3
answers
11k
views
Player Flying after colliding - Unity
I have a Player with a capsule collider on him and i have various objects in the scene. Most of the objects have either mesh collider or box collider enabled.
When i move my player and the player ...
- 63
1
vote
1
answer
184
views
Selecting Objects to Prefab Unity
So... I have a tree object and I have duplicated it to have many trees in the scene. So, I have about 200 trees in the scene. Before duplicating I forgot to add a tree as a prefab. Now, is there ...
- 63
1
vote
3
answers
10k
views
2
votes
3
answers
622
views
Colliders for moving inside a spaceship when the whole spaceship is made of a single mesh (in Unity)
I've begun to study a unity engine in one purpose: I have a great multi player game idea!
The main essence: In space there are two (or even more) huge spaceships with crew consisted of players (all ...
- 137
1
vote
1
answer
458
views
Unity3d Colliders not working on my characters [closed]
I have create 2 characters in maya and imported them in Unity3d. I am able to move and animate them in unity but the characters are not colliding with each others. I have tried all major colliders ...
- 19
0
votes
0
answers
250
views
Object doesn't move smooth over edges?
In the last couple of days I'm experimenting a lot with Unity 3D to get a feeling about the environment and the behavior of game development. I come from a programming perspective and try to develop ...
user44250
5
votes
1
answer
4k
views
Space Shooter Unity 5 Collisions not working
After upgrading the official Space Shooter Tutorial to Unity 5, collisions stop working.
Additionally, the following error is reported:
Non-convex MeshColliders with non-kinematic Rigidbodies are no ...
