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How can I implement fast, accurate 2D collision detection?
I'm well aware of how to detect if two or more 2D objects collide but I'm interested in how to decide whether to check for a collision. In previous projects, I just had every object check against e...
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Fast, accurate 2d collision - Game Development Stack Exchange
It should be fast enough. If not, create a low res 2d-boolean array and check it first, if you find collisions there, you would only need to check a small segment in the high res 2d-array saving you some precious time. Please read this for concept on how to split your game world into a grid of squares: Making an efficient collision detection system
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2d Rectangle Collision Resolution - Game Development Stack Exchange
When doing research on 2d, rectangle to rectangle collision resolution, I find myself digging through piles of collision detection, or other topics that have nothing to do with my search for truth (circle to rectangle, other detection methods...) For me, detecting collision has never been the issue... if player.x + player.width > box.x and
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Simple collision detection in Unity 2D - Game Development Stack Exchange
Simple collision detection in Unity 2D Ask Question Asked 11 years, 3 months ago Modified 5 years, 6 months ago
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2d Collision detection libgdx - Game Development Stack Exchange
Many equations exist for various shapes and purposes. I personally read Collision Detection in Interactive 3D Environments by Gino van den Bergen and found it a great resource for the mathematics behind collision detection. If you search for "collision detection/resolution" or "physics engine development" you'll find a lot of nice alternatives.
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2D Platformer Collisions - Game Development Stack Exchange
The XNA 2D Platformer example has a pretty straight forward algorithm it uses for collision detection and resolution. Here's an answer I've given over on Stack Overflow a couple of times. It's a language agnostic approach that can likely be adjusted to fit your actual needs. If you want to see their actual code (though it's in C#), it is in player.cs in the HandleCollisions() function. After ...
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2d - Using uniform grids for collision detection - Efficient way to ...
I was looking for an efficient way to implement collision detection in a 2D game. A way that won't result in an O(n^2) level of complexity. A lot of people recommend to use Uniform Grids for this
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collision detection - What is the fastest way to work out 2D bounding ...
Assume that each Box object has the properties x, y, width, height and have their origin at their center, and that neither the objects nor the bounding boxes rotate.
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2D Rectangle/Circle Continuous Collision Detection
I'm looking for a fast 2D continuous collision detection algorithm for circles and rotated rects. It needs to determine the time of collision. Both shapes may be moving at high speed, so the algor...
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How do you implement 2D collision detection?
So it depends on what you are trying to do. If you want something simple, I recommend stick with axis aligned AABBs for most things - they make collision detection really easy. Generally when you're writing collision code you'll have to write specialized cases for all pairs of shapes (ie. line-line, line-circle, line-box, circle-line, circle-box, circle-circle, box-box). For 2D, the main ...