Button to change layers

Questions & Answers
1

I’m making a plattform game, and for the collisions, i group up all the objects that are part of the plattforms and set them in a same layer

public LayerMask collisionMask;

so the player collides with every object in that layer.

i was thinking in setting a button to change that layer so the player can get through the plattforms and collides with others plattforms set in another layer, is there any way that i can do this?

2

Just set each group of platforms (colliders) to separated layer (in the inspector) and than in the button use

Physics2D.IgnoreLayerCollision(1, 2, true); //disable  collision detection
or
Physics2D.IgnoreLayerCollision(1, 2, false); //enable collision detection

where “1” will be the layer of your player collider and “2” or any other number will be the layer of the group. You can enable or disable collision with multiple layers at the same time. The numbers you get from layer editor. Read more here http://docs.unity3d.com/ScriptReference/Physics2D.IgnoreLayerCollision.html