Questions tagged [meshcollider]

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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, ...
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1answer
37 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: ...
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12 views

Player walking on bent mesh

I have a top down camera view of my player character. I want my character to walk as on flat surface, but also handle bent surfaces with more polygons. My problem is if I have a bent surface mesh set ...
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0answers
533 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: ...
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1answer
78 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 ...
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1answer
87 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....
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1answer
92 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 ...
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1answer
95 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 ...
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1answer
299 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 ...
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1answer
184 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 ...
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1answer
3k 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 ...
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1answer
69 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 ...
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2answers
368 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 ...
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1answer
2k 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 ...
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1answer
151 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" ...
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2answers
1k 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, ...
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3answers
16k views

Unity: 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?
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1answer
4k 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 ...
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1answer
397 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. ...
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1answer
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 ...
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2answers
660 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 ...
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1answer
3k 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 ...
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4answers
7k 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?
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0answers
732 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 ...
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3answers
8k views

How to create a boxcollider, which surrounds the gameobject and all of his children?

I have a Car, who needs a Box Collider. If the car would be 1 single mesh, i would only need to call: ...
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2answers
312 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 ...
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0answers
799 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 ...
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1answer
462 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 ...
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0answers
72 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 ...
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0answers
148 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 ...
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1answer
2k 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 ...
4
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2answers
4k 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 ...
4
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1answer
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 ...
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3answers
5k 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 ...
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1answer
113 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 ...
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3answers
6k views

Invalid AABB aabb

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3answers
446 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 ...
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1answer
388 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 ...
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0answers
241 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 ...
5
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1answer
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 ...