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Questions tagged [collider]

The tag has no usage guidance.

1
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1answer
20 views

Unity tilemap collider not colliding with rigidbody

In the wireframe you can see the tilemap collider for this hill. The red circle falls right through however. The circle has a 2D rigidbody attached. Everything is on the Default sorting layer and on ...
0
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1answer
34 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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0answers
22 views

Unity — Proper algorithm for a Character Controller that automatically fits mesh?

I'm trying to make an algorithm that will automatically generate a CharacterController component (on a parent-GameObject) which should automatically resize to whatever the current mesh size is. To ...
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0answers
35 views

Box collider has different behavior in 2 clients

I'm new to Unity. I am making my first Game and faced with problem. I have a plane and 4 gameobject that has box collider surrounded this plane. there are a few spheres as players inside of the plane....
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18 views

Is a simple PolygonCollider2D really worse than several BoxCollider2Ds?

In my scene I have very simple quadrilateral blocks, which I'm considering using PolygonCollider2D for. These blocks will be the building blocks of the scenery so ...
2
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0answers
33 views

Zooming in a lot without having 3D objects disappear in the Unity Editor

I'm editing the 2D colliders on some objects of my game, and I need them to be very accurate, so I'm zooming in a lot. Problem is, since my objects are 3D graphically, when I zoom in a lot they ...
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0answers
10 views

Unity: finding force vector to separate colliders in OnTriggerStay events

In Unity, I have Trigger Colliders, and catch the OnTriggerStay(Collider other) events. Once two Colliders are touching, how do I get the Force vector to make them want to separate again? In the ...
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0answers
20 views

How do I transform from local points to world when using a scroll view?

I'm using a scroll view to store my game character icons (basically an RPG). The movement system for the characters is tile based, but in game hazards could be located anywhere. So I need to detect if ...
0
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1answer
49 views

Unity Hit Collider GameObject is Null when Collider is Child (Line-of-Sight Detection Problem)

I'm creating line-of-sight code in Unity. It allows a radar to check whether it can see an object, or whether the object is behind an obstacle (a collider). Similarly to Unity's suggestion, I check ...
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3answers
72 views

How to add collision to this script in Unity

I Want to be able to have collision were my player can't go through objects with colliders un Unity but I don't know how to make that happen, can you please help? ...
2
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0answers
58 views

Line Renderer 2d Follow the edge

I am using mouse position to draw a line using line renderer 2d. What i want is when the line hits a collider it should start to draw on the edge of the collider rather than over the collider. ...
0
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1answer
79 views

Resize rigidbody in runtime, Box collider OnTriggerEnter not work

Scene setting: Object A: Rigidbody, kinmeatic Box collider, is trigger true. Object B: Box collider, is trigger true. Script is on Object A: ...
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1answer
44 views

Unity - OnTriggerEnter & OnTriggerExit strange behavior

I am having a trouble with OnTriggerEnter with a lot of objects. I have a NavMeshAgent moving randomly throught the scene, then I have a sphere collider inside a children to detect nearby objects. If ...
0
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1answer
43 views

Unity: How many Raycasts per Sphere Collider?

I understand that a simple sphere collider in Unity is a raycast in all directions with a certain length. How many Raycast events does a sphere collider trigger? At what degree increments are the rays ...
0
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1answer
168 views

How to give individual tiles their own collider in Unity's tilemaps?

My floor tile is a 2D drawing of a 3D platform, for lack of a better description. I want my player character to stand not on the top of the tile but a little inside it, as the red circle does in the ...
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0answers
14 views

Capsule collider triggered unexpectedly

I have an object with a capsule collider on its root, with IsTrigger=true (triggered by the player). The trigger works fine, but is also triggered unexpectedly some ...
1
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1answer
43 views

Unity3d How to add collider to borders

I have a box with a hole in it. Is it posible to add a collider only to the dark blue showed at the img? (But only at the borders, not a box collider. Let's say i want some object to get in the box, ...
0
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1answer
68 views

How can I get visually accurate collision normals with sphere collisions?

I'm solving simple 3D sphere collisions by checking the sphere for overlap with a mesh, finding the nearest point on that mesh's surface to the center of the sphere, and then resolving the collision ...
0
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1answer
36 views

How to know the point of collision with another object in Unity5

I have a small problem and it would be very helpful, which could guide me. What happens is the following, I have an enemy (evil usb) in my scene, to the collisionar this enemy with my main player ...
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0answers
100 views

Physics.IgnoreCollision not working right after invoked

When invoking Physics.IgnoreCollision in Unity, it seems work but it still have collision detection right after creation. I have this issue with ejecting empty case after gun fire, it's spawning ...
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0answers
152 views

Detecting collisions without rigidbody

I have a car with the following aspect: As you can see, colliders are locally static, because they are separated from the original rigidbody component. Well, as you can suppose, I have a problem, ...
0
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1answer
84 views

Can I test collision inside an edge collider area in Unity?

I draw a triangle with the edge collider2d and I want the player to make an event when he reaches this area, so I set the collider as a trigger and, I used the OnTriggerStay2d function in my code! ...
1
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1answer
35 views

Teleport Not Working in Unity 2D

So I'm basically trying to get my character to "use" a set of stairs by teleporting from one stairway door to another. Each stairway door will be paired with one other stairway door. Here's the code, ...
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0answers
40 views

Marking up 2D polygon perimeter on an image

I'm working on a 2D game in JavaScript using the Web canvas. I plan to use AABB proximity detection and then point, line and polygon on polygon collision detection. Which means I need to define ...
1
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1answer
132 views

Changing CharacterController's height causes jittering issue in Unity

As title said changing height of Character Controller causes jittering issue. For example when I reduced the height of CharacterController, it seems CharacterController was floating at each frame and ...
0
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1answer
38 views

How can I determine when colliders of two gameobjects touch one another?

I stop gameobjects from colliding with one another by having box colliders around the gameobjects with dimensions bigger than the gameobjects. It works fine, but I want that when the gameobjects ...
0
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0answers
105 views

Get the convex mesh generated by MeshCollider in Unity

I have a MeshCollider on my GameObject and its convex is set to true. I want to get the convex mesh generated by the MeshCollider and use it for stuff. Currently, ...
1
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3answers
159 views

Is it possible to have two trigger zones around the same GameObject in unity?

I have created a trigger zone to make sure that only only gameobject passes through it at a time. The moment the gameobject1 entered the trigger zone, it is given a particular tag but I am not how to ...
1
vote
2answers
181 views

Instantiated object not tracking collision

I have an issue, and I'm not sure why it's happening. I have a prefab that I've built in a colour-changing game. It has the following: Four 2D objects that if they collide with the player (2D ...
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0answers
60 views

Unity2D - Player Sprite sinking into colliders

Im currently developing a game. At this stage I've got a player controlling a sprite which digs into dirt (30 dirt objects per layer, 3 layers deep). My current issue is that when using A and D to dig ...
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0answers
128 views

How to convert Transform.position to Rigidbody2D.velocity?

I have an object with Physics Material 2D in Unity (C#). My object rotates in four directions after pressing the left mouse button: -up right -down right -down left -up left After pressing the ...
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0answers
45 views

Get number of sides of a shape created with LineRenderer in Unity

In my game I'm using LineRenderer to draw a line at every mouse click. As you can see, everytime the lines collides with itself it creates a new shape. I'm able ...
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0answers
15 views

Change 3D collider dynamically

I have created one golf course as mentioned here. When the ball is over the hole, I changed the table's collider to mesh collider. When the ball lefts the hole, I set the table's collider to box ...
0
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1answer
1k views

A trigger collider in Unity doesn't allow the player to pass through

It's my understanding that checking "Is Trigger" on a collider should allow rigid bodies to pass through without collision prevention, but my trigger isn't doing that consistently. The player cannot ...
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2answers
121 views

It lags when it collides. Help? :(

I am trying (and believing) to make a game of pong. I have got a slightly decent working game. I haven't implemented the scoreboard or AI yet because I want the physics to work first. I am trying to ...
0
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1answer
27 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" ...
1
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1answer
77 views

Is Trigger Colliders not ignored

I am working on a 2D Plattformer with melee attacks. The player is using a Kinematic Rigid Body and a Capsule Collider. Movement (even in slopes), jumping and and collission are working fine. My ...
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2answers
23 views

how to modify multiples BoxCollider on a same game object?

I have an game object with multiples BoxCollider attached to it, is there a way to get all the BoxCollider to an array so that I could modify their value individually ?
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1answer
197 views

Which collider should I use for a bucket?

I have a bucket, and I want a ball to be able to enter it. I'm facing a problem: Unity mesh collider seems not work with concave object... is that true? How can I solve this?
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2answers
37 views

Unity collision help

So my problem is this: I have a block, which is used as a "pointer block" to show where a block will be spawned. It will be green if it isn't colliding anyone, meaning you can spawn a block. It gets ...
1
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1answer
509 views

My collider is not following my humanoid animation: how to do ?

I've a "Zombie" charachter and the following hirearchy: I put a Capsule collider on parent Zombie_01. When I kill the zombie, my "Zombie dead" animation is played, Zombie fall to ground, but the ...
1
vote
1answer
162 views

How to ignore collisions of triggers after first collision of trigger until OnTriggerExit of first collision of trigger?

There is are white and red two teams of tank which are auto spawning in certain time interval. both red and white type of tanks have triggers so when red and white tank come close enough, ...
1
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1answer
278 views

Unity - An unwanted Collider , far too big , being added to meshes without reason and I cannot remove it

so I have a game in progress that is very similar to Asteroids. I was using spheres as primitive game objects and it all works perfectly in this case, but I need to be able to rotate the ship's model, ...
1
vote
1answer
91 views

undetected colission

I'm doing a simple grid based game, where the player should only be able to move on the grey cells. It works quite ok, but in this simple scenario, the player is able to walk through Wall(1), although ...
0
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0answers
59 views

How can I get the coordinate on the polygon of an object after it has collided with another one?

When the object collides with another, I can get the normal of the polygon (or plane): Collision other.contact[*].normal But can I get the coordinates of the ...
3
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3answers
8k 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?
2
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0answers
45 views

Unity: Messages in Compound Colliders

Lets say I have a 2D character with two colliders: a circle collider that represents the feet, and a box collider that represents the body. Lets say that the character is currently standing on the ...
2
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1answer
853 views

merging box colliders for optimizing

Look at the picture. The figure on the left shows the individual box collders in green. The yellow boxes on the right are the results of the optimization of the original box colliders. What is the ...
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1answer
86 views

Collider does not call callback functions

I have a script that will create new GameObjects and will place it where the mouse is placed on the terrain. Now I need to have a check for collision on other already placed GameObjects on the field. ...
1
vote
1answer
29 views

Fixing collider for existing scene

I'm trying to add collider to the 3D scene. I have added mesh collider to the floor but I see the character is still floating up when I play. How can I edit this collider. I don't see any edit ...