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Question by dpw · May 20, 2014 at 03:59 PM · collisionraycastdetectground2dplatformer

How do I use RayCast in a 2D Platformer game?

Hello everyone!

I am currently working on a very very simple 2D platformer exercise, and I can't detect what is ground. With some researches I thought raycasting would be the best solution, but how can I apply it? Here is exactly what I am looking for:

https://www.youtube.com/watch?v=4dMVDAULrbQ

Is there a simple way to apply that when using BoxCollider and RigidBody (both 2d)? How exactly do I use the Physics2D.raycast? Please help me!!

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avatar image OboShape · Oct 21, 2014 at 03:06 PM 0
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I am also trying to implement this, but in an old 80's style way where there is no acceleration and no jump steer. ive not managed to get it optimised and im still working on it as its juddery as hell.

but, for a source of were i was looking at, there is a 2D platformer tutorial from Sebastian Lague that was in the forum. it goes through a sidescroller tutorial, but the first 2 episodes are related to 2d style of raycasting.

have a look at this to see if it gives you what your after, or at least a starting point, i think it might as its helped me.

https://www.youtube.com/watch?v=d3HEFiDFApI&list=TL1eyd0Vg6vtJVlckr$$anonymous$$aPRYCNkSeS64Pgn

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Answer by Sisso · May 20, 2014 at 05:07 PM

http://unity3d.com/learn/tutorials/modules/beginner/2d/physics2d

http://docs.unity3d.com/Documentation/ScriptReference/Physics2D.Raycast.html

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