# Tagged Questions

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5k views

### Finding the contact point with SAT

The Separating Axis Theorem (SAT) makes it simple to determine the Minimum Translation Vector, i.e., the shortest vector that can separate two colliding objects. However, what I need is the vector ...
751 views

### Collision Detection with SAT: False Collision for Diagonal Movement Towards Vertical Tile-Walls?

I'm developing my first tile-based 2D-game with Javascript. To learn the basics, I decided to write my own "game engine". I have successfully implemented collision detection using the separating axis ...
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### SAT and then what?

I am on my way to make another Arkanoid game but this time I decided that I want it a little bit more realistic than just checking intersections between AABB and inverting one vector's component on ...
814 views

### How does the SAT collision detection algorithm work

There are a lot of tutorials and sample code available showing how to implement the SAT collision detection algorithm. But can someone explain, without math or code, what are the general principls ...
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### Robust “soft” platform collision using SAT

We'll start with the questions, then a pile of background: How do you rigorously and thoroughly define "soft collision" of the Mario-esque type (if I start above, or in a jump my feet apex above a "...
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### SAT test for Triangle - convex hull

I'm having real trouble resolving this issue with triangle-convex hull SAT test intersection. The problem is as follows: Misses are detected accurately enough: Clear miss I have not found a ...
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### 2D SAT How to find collision center or point or area?

I've just implemented collision detection using SAT and this article as reference to my implementation. The detection is working as expected but I need to know where both rectangles are colliding. ...
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### Calculating contact points with SAT [duplicate]

after detecting collision between two convex shape by using separating axis theorem and calculating MTV, how can i calculate the contact points ?(for applying torque to the rigid body).
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### 2D SAT Collision Detection not working when using certain polygons (With example)

My SAT algorithm falsely reports that collision is occurring when using certain polygons. I believe this happens when using a polygon that does not contain a right angle. Here is a simple diagram of ...
247 views

### Collision detection circle-segment-segment

I've already implemented collision detection in my game loosely following this tutorial, which works great, but I realized there's one major flaw. The player and the enemies are circles, while the ...
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### Game Physics: Calculating a collision response using the Separating Axis Theorem?

I am working on a project in which I have implemented the Separating Axis Theorem to detect collisions between objects. My current collision response is an object that contains whether it is ...
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### Zero vector test in projection intersection test in SAT

I stumbled across this implementation for a projection intersection test to use in a SAT test: // aCorn and bCorn are arrays containing all corners (vertices) of the two OBBs private static bool ...
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### 2D Polygon Collision push direction with large polygons

I have a collision detection/resolution implementation that uses the Separating Axis Theorem. Detection and such works perfectly fine, as well as resolution for most objects/shapes in my game. ...
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### Separating Axis Theorem Issue

I am trying to create a 2d top down shooter using DirectX 11 (Windows 8 Store) and I am trying to implement OOBB collision using the Separating Axis Theorem. However I appear to have run into an ...
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### SAT - How to find Shortest line between two static convex 2D Polygons

I have a pretty standard SAT algorithm that seems to successfully be detecting collisions.. but now I am looking for some assistance in finding the Shortest line between 2 separated Polygons. I ...
2k views

### Separate axis theorem applied to AABB misunderstood

I'm trying to implement a collision system for a 2D platformer using the SAT algorithm. For what i need, my implementation only handles AABB's, i followed the instructions given here. It works, there ...