unity2d create a one side collider

Question

I have a maplestory game demo

I need character can jump through a collider from one side

the collider in my character and ground are like this:

character:capsulecollider2d

ground:polygoncollider2d

so the character can stand on the ground

also can jump on the ground

but now I want character jump from bottom of the ground,it cannot work

so, How can I deal this problem? Is there a configuration that can make collider only have one side?

-------------------------------------2017 08 11-------------------------------------

thanks a lot every one

thank you @EmreE @Jeroen De Clercq

I resolved this problem by using Platform Effector 2D provided by @EmreE

first: add platform effector 2d on my ground and select "use one way"

second:select "Used by Effector"

now it works :)

Answer 1

• Put your floor in a layer;
• put your platforms in a layer;
• When you jump remove collision with platform layer until u have reached a direction that points towards the floor.
• When you press down key remove collision with platforms until you have passed one platform layer.

More information here ; https://docs.unity3d.com/ScriptReference/Physics.IgnoreLayerCollision.html