Questions tagged [collision]
In collision detection problems, the challenge is to determine when shapes intersect each other.
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QuadTree for collision detection
I was recently working on a game using the SFML library, Later on, I experienced performance issues due to collision detection. I have been told to use a QuadTree ...
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Bounding volume hierarchy
I'm building a bounding volume hierarchy in Golang. I can tell my code works because I did some test on it and it gives the same results as the brute force implementation (brute force is to test all ...
user82249
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Obstacle-avoiding AI
I have made a game in Java that involves two players to fight each other with spaceships. For one player mode, I have programmed a simple AI to avoid allies and asteroids and go straight towards the ...
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Conditionally eliminating one of two colliding bodies
I like to explicit return function even for void functions to reduce the use of if-elses, like this code snippet:
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Check if specific key exists in 2-dimensional array
I am writing a "collision detection" in PHP and want to check if a specific "area" is still free in the two-dimensional target array.
I use the following code to do that, but I think there might be a ...
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Platformer with collisions
Today I started to build my first platformer, first time working with collisions and stuff. Now, surprisingly, everything seems to work, but since this is my first time creating a platformer and I'm ...
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Check for collision with side of screen
I thought of a program where you move a square with the arrow keys. I created it and asked a question about it on Stack Overflow.
I copied the last code block of the accepted answer and tried to ...
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Line segment to circle collision algorithm
I've written a function (in Python 3) which computes if a line segment (constraint) and a circle (body) collide, and returns the point of intersection (closest point to the centre of the circle):
<...
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FPS efficiency for 'attack counter'
I have a code snippet which I wish to improve to increase my program's FPS, but as a beginner in JavaScript, I do not know how. I know the problem, which is the fact my counter mechanism used to delay ...
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Quad Tree and Collision Detection Implementation
I have an implementation of a quad tree and abstract collision detection classes. The code works but looks very ugly, but I don't know what I could change to make it better.
The reason I used two ...
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2D Platformer Collision Detection/Resolution
I am working on a 2D tile based platformer and was hoping to get someone to review my collision detection. I've only included the X collision check since the Y is essentially the same. Any suggestions/...
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Ray→plane and ray→quad intersection
This checks the intersection between a Ray and a Plane and between a Ray and a ...
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Weeding out triangles for triangle-triangle collision detection using a spatial hash
I am implementing a multi-phase collision detection system whose final collision check is checking the triangles of one shape against those of another. As the number of triangle-triangle comparisons ...
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Collision-detection for an SDL game
I am working on a simple SDL game in C++. I want to make my collision detection implementation better.
Here's the complete project:
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Thread, handler and activity structure for a bouncing ball animation
This is a custom MyActivity class with two custom views (bar and a ball):
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