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Questions tagged [collider]

Colliders are geometric proxies used in collision detection. Colliders are usually simple shapes (e.g. spheres, boxes, capsules, and their 2D counterparts) that work best with collision detection algorithms compared to the high-poly 3D meshes they approximate alone or combined.

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How to get around mouse entry signal stopping at first collision?

I have a grid of Area3D objects, and when nothing is around them, they handle the mouse_entered signal exactly as I would expect. The only issue is that I also use Area3D's on other game objects, like ...
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2 answers
27 views

two colliders for same trigger are conflicting

I'm trying to detext when player goes inside and exit this house. As the picture shows I need two colliders because the house is not an exact rectangle. So I added two box colliders to an empty ...
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How to implement flexible, deformable shapes?

I'm making a top-down, 2D wargame that simulates large numbers of troops fighting. Instead of taking the Total war approach and modelling each soldier individually, I represent them as 1000-man ...
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43 views

Collision between a sprite and a rect in PyGame

I'm trying to make a simple platformer game, which has code to move the camera towards a player as they jump around. Now I have two classes: one for the player, and one for the platform. In the ...
2 votes
2 answers
152 views

How to make the player pass through only certain objects, but not others?

Experimenting with my 1st Unity project. It's about a top down swimmer. By toggling the swimmer's collider, he can swim under boats: ...
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1 answer
443 views

Where did the Composite Collider go?

Some of my GameObjects have 2 Sprites nested under them, like how Cat and Snake are nested under Sprites: The "Cat + Snake" parent GameObject has a Composite Collider 2D and a RigidBody 2D ...
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1 answer
478 views

How to get reference to board tile object another game object is sitting on?

I am trying to get reference of the object underneath my Player. I don't know if I am approaching this correctly. Right now, I have a player simply put in the scene, like this: Then I am trying to ...
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1 answer
628 views

Player goes through obstacles with colliders

My Player just goes through stuff he actually shouldnt be able to go trough like enemies or map borders, which all have collider components attached to them. It's really annoying because I haven't ...
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1 answer
168 views

The bottom of the player capsule collider is going into the ground box collider

The bottom part of the player capsule collider is going inside the ground collider. I am using a raycast for detecting whether the plauer is grounded; an object (sphere) that is present on the bottom ...
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1 answer
91 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 vote
2 answers
3k views

How to prevent an object with high velocity from passing through a collider?

Consider a simple 2D platformer. I have a BoxCollider2D on the player object and a TilemapCollider on the ground below(grid). I ...
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1 answer
856 views

Automatically create capsule colliders from bones?

I have tried to automatically generate capsule colliders from bones by temporarily creating a mesh collider and using raycast to find the distance to it from the bone, but when I create the capsule ...
1 vote
1 answer
880 views

_ready(): Node not found: "Pivot/Camera" + player falls through the floor

I'm relatively new to Godot 4.0.3. I have two problems which seem to depend on each other so I put both of them into one single question. I know, these issues have been reported multiple times on ...
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PolygonCollider2D components do not work properly in iOS build

I'm trying to figure out why my polygon colliders default to pentagon shapes when I build my app and test it on a device. I have a scene with some blocks you can drag around where the colliders work ...
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Physics2D.OverlapBoxAll misses small overlap

I have a tetris-like 2D game with tiles, each made up of a sprite, a Rigidbody2D and a BoxCollider2D. The tiles fall from the ...
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1 answer
231 views

How to check if a 2D GameObject is touching something without OnTriggerEnter

I want to avoid using OnTriggerEnter2D because I want to use it in a function like this: ...
1 vote
2 answers
3k views

How to flatten the collider for a tilemap?

I am relatively new to game development, and am working on a simple 2D platformer. I have created a tilemap and painted some tiles for the character to walk on.. but he is getting stuck. Yes, I know ...
0 votes
1 answer
98 views

Physics.CheckSphere not accounting for changes to object transform

My current project is a turn-based board game in Unity. Here is what I am trying to accomplish and the issue I am having: In Start, I generate the board, then populate the surrounding area with ...
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1 answer
87 views

How to add visual movement to a car's wheels?

I'm fairly new to Unity and game development in general, I'm trying to build a basic car and give visual movement to the wheels. The car controls are pretty basic: accelerate "w" key, turn ...
6 votes
3 answers
4k views

Most efficient way to get the world position of the 8 vertices of a Box Collider

What I am looking for is the most efficient way to get the world position of the 8 vertices of the Box Collider of a freely rotated Game Object. I cannot use collider.bounds since object is rotated, ...
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0 answers
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Box Collider on terrain trees activate far from the actual collider

The trees are prefabs but are placed as terrain trees. There is a space ship that explodes when hits the tree. The moment I got the screenshot is the moment that the ship collides with terrain (the ...
0 votes
1 answer
424 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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2 answers
975 views

Position of Gameobject Changes When Hit Play Button

I have a 3D Humanoid model. When I press play button, suddenly position of model changes and collider doesn't match with model.
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2 answers
1k views

How to deal damage every 2 seconds while enemy is touching the player, rather than every frame?

I have made an up and down movement RPG prototype and I wanted to have a fighting system. I made it so that the enemy follows the player and that I get damage every time he collides with me. The ...
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1 answer
1k views

Two Colliders on the same GameObject for different purposes

I'm somewhat new to Unity and am trying to build a battle system. Right now, I have an attack that checks collisions with enemy objects like this: ...
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1 answer
257 views

Should a swinging sword be part of the player sprite, or its own separate sprite?

Should the sword be part of the player sprite and therefore share the same hitbox that is widened when attacking? or Should the attack animation be separate from the player sprite therefore having its ...
0 votes
1 answer
909 views

Colliders slightly intersecting each other; any solution?

Consider this simple scene: In Unity, colliders slightly intersect each other. Typically, this isn't a problem. However, I want to make a custom character controller using a box collider and not a ...
6 votes
3 answers
29k 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?
15 votes
4 answers
3k views

Solving obtuse interior corner collisions

I'm having some trouble solving collisions in obtuse interior corners. In the above image, the black circle is the initial position, the red is the projected movement (straight into the corner), the ...
0 votes
1 answer
906 views

Why isn't my tilemap collider appearing?

I am trying to make a 2d game but my player falls through the tilemap every time. My tilemap collider doesn't seem to show up. What is going on and how do I fix this? The first image is rigidbody ...
1 vote
2 answers
836 views

Multiple enemies get hit by arrow instead of one

I am working on my first Tower Defense game and I have a problem where multiple enemies get hit by a projectile instead of one. Enemy with its collider: The problem is that when the enemies get close ...
0 votes
1 answer
904 views

Collider overlap is not being detected

I am writing some logic to handle spawning objects into a game scene at a randomly generated location based on the size of a collider's bounds. The logic for getting the coordinates and instantiating ...
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0 answers
79 views

Alternative to CharacterController

I am really enjoying the use of charactercontroller, but it being limited by a y-axis aligned collider is a real annoying limitation when I am using a 'character' with a very different shape (like a ...
0 votes
1 answer
782 views

How to use Transform.lossyScale in a local reference frame?

According to the Unity docs for Transform.lossyScale, this attribute is "The global scale of the object". From what I can tell, this isn't actually an estimate of the scaling aligned with ...
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1 answer
141 views

BoxCollider2D used as reference to Collide with GameObjects but it uses the original size Sprites size to Collide

I'm a beginner in Unity and pretty much copy and pasted the code but I can't figure out why the game is using the size of the sprite and not my BoxCollider2D as a ...
0 votes
1 answer
608 views

I have a "Floating Capsule Collider" setup, but if Collider stands on the edge of a platform, the player Mesh ends up looking 'stuck'

I have a "Floating Capsule Collider" setup, but it has an issue when the Collider stands on the very edge of a platform-- the player Mesh ends up looking 'stuck' inside of the platform. How ...
1 vote
0 answers
226 views

Unity - How to implement water trigger?

I want my character to change the movement mode to swimming whenever he enters Water. So I used the OnTriggerEnter to check if the other collider is my water volume, and if so, change movement mode to ...
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0 answers
151 views

Possible to completely deactivate a RigidBody 2D component so that the Composite Collider on a parent object works?

In my Unity game, I have two GameObjects with the tag "Animal": Snake and Tiger, nested like so:. Snake Tiger I have a Composite Collider 2D/RigidBody 2D on both the parent GameObject (...
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2 answers
1k views

Scope of 'this' - Cannot read property of undefined in collider and overlap function

I am working on my first 2D game with Phaser 3. I have set up VS Code with a node.js https server and run it to deploy the game on localhost. While the game gets compiled successfully and deployed, I ...
0 votes
3 answers
2k views

Jittery collisions in Unity 2D

I tried to implement a simple movement to my object. My object moves perfectly fine but I'm having issues with its collision. When I keep on moving object towards the obstacle/ground, collision are ...
0 votes
0 answers
195 views

2D circle and rotated square collision detection and response

I'm creating a 2D multiplayer game in javascript, but I'm actually struggling with a problem (not really a problem, but I don't know how to do). I'm actually trying to make my player (circle hitbox) ...
0 votes
1 answer
836 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, ...
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2 answers
884 views

Rigidbody not working properly

I have two objects: a player and a wall. The player is passing through the long side of the wall but it collided with the short side of the wall. I want the player to collide with whole wall. Here is ...
0 votes
1 answer
191 views

What is an alternative solution to the problem of polygon collider2D not following character (animation)movement?

A 2D game and a bird's eye view of the character. This character, who has a knife in his hand, swings the knife by waving his arm, just at this time, I look at "polygon collider2d" from the ...
0 votes
1 answer
113 views

How do you allow joints in a character to fall freely based on gravity?

I am building a game in Unity in which a character falls down on death. Is it possible to make the joints fall and bend based on gravity? That is to leave the joints fully dependent on gravity and ...
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0 answers
96 views

How to display the Composite Collider to a player

I have a GameObject with a Composite Collider on it. There are 2 nested GameObjects under it, each with a Sprite: I am making an educational game, and for pedagogical reasons I'd like to display the ...
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1 answer
729 views

Possible to have Composite Collider 2D detect colliders in grandchildren?

I have a number of GameObjects with 2 child GameObjects: Sprite Words There is a a BoxCollider2D on both the Sprite child and the Words child. The parent has a Composite Collider 2D on it, which ...
1 vote
1 answer
71 views

Why does my collider behave strangely after a coroutine

So I'm trying to create a simple script that is going to handle the logic for cutting down a tree I'm experiencing some strange behaviour with my script. I have a private field which holds the "...
1 vote
1 answer
84 views

Dragging a Rigidbody2d without moving other Rigidbodies

There are obstacles and other objects that are draggable. Colliders and dynamic rigidbodies are on the draggable object and there are colliders on the obstacles. The problem is that with the ...
0 votes
1 answer
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'Edit Collider' exits after every adjustment

When I click the Edit Collider button I can see the collider's region and the handles to adjust it. After every adjustment (with the mouse) the collider outline disappears as Edit Collider finishes. ...