# Collision of two rectangles
**URL:** https://discourse.processing.org/t/collision-of-two-rectangles/22010
**Category:** Coding Questions
**Created:** [June 19, 2020, 10:25pm UTC](https://discourse.processing.org/t/collision-of-two-rectangles/22010 "2020-06-19T22:25:57Z")
**Posts on this page:** 6
**Page:** 1
### Author:  [@jeyeffkay](https://discourse.processing.org/u/jeyeffkay)
#### Post date: [June 19, 2020, 10:25pm UTC](https://discourse.processing.org/t/collision-of-two-rectangles/22010/1 "2020-06-19T22:25:57Z")
Hey guys,
I am corrently working on a flappy bird like game and I want to now how it is possible to detect a collusion. Currently the bird is just a rectangle. So I want to know how I in general can check if the rectangle is hitting an obstacle.
Greetings and thank you for your response
Jeyeffkay
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### Author:  [@astrogeek](https://discourse.processing.org/u/astrogeek)
#### Post date: [June 19, 2020, 11:28pm UTC](https://discourse.processing.org/t/collision-of-two-rectangles/22010/2 "2020-06-19T23:28:17Z")
Here’s a page from stackoverflow, examples written in Java but the algorithm will work the same:
>
Another page with a more general discussion of collisions between circles, rectangles, and polygons, presented in order of complexity (circles are easiest, polygons are most complex):
> **[Collision Detection - Circles, Rectangles and Polygons - Game Development](https://www.gamedevelopment.blog/collision-detection-circles-rectangles-and-polygons/)**
>
> Collision detection - using maths to find out if two shapes are colliding. This guide will focus on circles, rectangles and polygons.
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### Author:  [@GoToLoop](https://discourse.processing.org/u/GoToLoop)
#### Post date: [June 19, 2020, 11:55pm UTC](https://discourse.processing.org/t/collision-of-two-rectangles/22010/3 "2020-06-19T23:55:52Z")
> [@jeyeffkay](#):
>
> … check if the rectangle is hitting an obstacle.
> **[Collision Detection](http://jeffreythompson.org/collision-detection/rect-rect.php)**
>
> An online book about collision detection using Processing.
[Studio.ProcessingTogether.com/sp/pad/export/ro.9bTfM49wCIJza](http://Studio.ProcessingTogether.com/sp/pad/export/ro.9bTfM49wCIJza)
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### Author:  [@debxyz](https://discourse.processing.org/u/debxyz)
#### Post date: [June 19, 2020, 11:56pm UTC](https://discourse.processing.org/t/collision-of-two-rectangles/22010/4 "2020-06-19T23:56:36Z")
If you like to learn via video, this YouTube tutorial by Abe Pazos showing overlapping objects and dist() function is very good:
[![]( " - YouTube") ](https://www.youtube.com/watch?v=N5Ka4C3RVmw)
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### Author:  [@slow\_izzm](https://discourse.processing.org/u/slow_izzm)
#### Post date: [June 20, 2020, 12:08am UTC](https://discourse.processing.org/t/collision-of-two-rectangles/22010/6 "2020-06-20T00:08:45Z")
in p5, but easily portable …
[ ](https://www.youtube.com/watch?v=cXgA1d_E-jY)
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### Author:  [@jeyeffkay](https://discourse.processing.org/u/jeyeffkay)
#### Post date: [June 21, 2020, 6:58pm UTC](https://discourse.processing.org/t/collision-of-two-rectangles/22010/7 "2020-06-21T18:58:21Z")
Thank you for all of your response. I used the link from GoToLoop but I might try the rest in the future.