Questions tagged [collision-detection]
Collision detection is the determination of whether or not two or more entities make contact with each other during gameplay.
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How to detect which physics body of skeletal mesh has overlapped?
I have a skeletal mesh with a Physics Asset assigned to it as such:
This skeletal mesh is used within an ACharacter with collision settings as such:
And an actor which has the overlap event as such:
...
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Colliders not in the same collision layers stopping each other from moving
I'm creating a space sandbox game (godot 4.5), and the core of my building system is attaching parts together to create assemblies. Each assembly is one rigidbody3D that contains all the parts. Since ...
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How to speed up collision detection if there are hundreds of objects?
Let's say I have like 500 Asteroids and I'm using SAT to determine whether a collision with the Spaceship object has happened. This would require an insane amount of CPU cycles, so it makes sense to ...
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OnTriggerEnter called without a Rigidbody
I use Unity and the player controller in the game is acting strangely. It has a Character Controller but no Rigidbody. I use CharacterController.Move to make him ...
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Original pacman hitboxes and cornering
I have been working on (somewhat) faithfully reimplementing pacman as a sideproject and means of better learning the rust framework Bevy.
However, there is one part that I really cannot quite get my ...
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How can I address multiple collisions within a single frame?
So, in my breakout clone, I've encountered issues where the ball will sometimes phase through bricks and the borders if it collides with one and then immediately collides with another after. My guess ...
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How do you resolve collisions between two oriented bounding boxes?
I'm working on a 3D physics engine, and I'm trying to implement OBB/OBB collision detection. I was able to find Bullet's implementation here, that I'm trying to adapt. However, I still want to know ...
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How to handle collision events in games with multiple interactive objects?
I'm developing a 2D game where multiple types of objects interact with each other through collisions. Currently, I'm using pygame.spritecollide() to detect ...
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How do I get a 3D collision with a Heightmap in Raylib?
I'm presently trying to do a sorta Starfox clone with Raylib, using the heightmap example here: https://www.raylib.com/examples/models/loader.html?name=models_heightmap
In order to handle collision in ...
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How to destroy/remove Texture after collision in java box2d
I'm coding a simple Arkanoid/Breakout game and have problems with removing the bricks. I'm able to destroy the body but the texture is still there. I'm a beginner so is there a simple way to remove it ...
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How to Make Circular Space After Collision?
How to make circular space after collision like this?
Before collision:
After collision:
I'am using PyGame
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How to compute a normal in circle vs rectangle collision to push them apart?
I have a 2D circle, defined from:
c = circle(position = (x,y), radius = r)
I also have a 2D rectangle defined from
...
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How can I improve vector collision algorithm?
I'm making a game (shocker) in pygame and had issues with tile-based collision detection. There are 5 different non-empty tile types (pictured below) which can be rotated in increments of 90 degrees ...
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Unable to Shoot Enemies Due to Proximity in a 2D Game
I’m developing a 2D top down shooter where the player has a pistol. However, I've noticed that when enemies get too close, the player can't shoot them because the pistol doesn't have a collider.
I ...
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Collision detection with CapsuleCast
I'm attempting to detect when a gameObject with a Capsule Collider and RigidBody attached it lands on the floor, which is a Mesh with a Mesh Collider attached it to it. Adding a tag to the Floor ...
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In Unity, how can I check whether two objects are sliding on each other or rolling against one another?
I'm coding a script to make objects emit appropriate noises on contact with other objects, with different sounds for isolated impacts, sliding, and rolling.
Impacts work just fine, but for the other ...
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3D AABB vs AABB discrete collision - How to choose resolution axis?
I'm working on a simple 3D collision system that only needs to handle dynamic AABB vs static AABB. It needs a sliding collision response, but it doesn't need to sweep (i.e. doesn't need continuous, ...
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BSP Tree Troubles and Unpredictable Results
I've been trying to fix this problem myself for ages, but I really do need help. I'm creating a BSP tree for my 3D game (baked in the map files, quake style) to replace my existing naïve collision &...
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Why is my player not colliding with animated obstacles?
I can't figure this out. My obstacles have a basic box collider on them and my player has a rigidbody based controller and collsion detection is set to Continous and when obstacle hits him it just ...
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Chain cutting swipe input skips over chains
I have a game where you need to cut chains, similar to Cut The Rope. I want to develop it for Android, so I need mobile controls.
For detecting swipes I used ...
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AABB Collision Resolution Per Face
I have this function that detect the collision of two AABBs:
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How to set up high-performance collisions for level geometry in Unity?
I'm new to Unity. I was wondering what the best workflows were for placing colliders.
I'm going for high performance, and I've heard that mesh colliders aren't as performant as just placing down box ...
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delta_time with the new move_and_collide() function in GameMaker
Is this implementation of delta time in recent Game Maker reliable?
var dt = delta_time / 1000000
move_and_collide(spd_h * dt, spd_v * dt,obj_world.solid_tiles);
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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 ...
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Issue with AttackArea Monitoring Before Attack in Godot 2D Game
I'm developing a 2D game where the player character can attack enemies using a designated attack area (Area2D node named AttackArea). I've encountered a problem where the AttackArea is active and ...
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