koobas.hobune.stream
Platform collisions only from above in 2D
I am trying to make a platform the player can only acces by jumping from below in a 2D game. I was using a kinematic rigidbody2d and checking the collision with raycast. However, in order to collide with other elements, I have change the rigidbody2d to dynamic. Since then, I cannot access to that platform. As the option to make the kinematic rigidbody collide only can be set in the 3D Physics (or only works in 3D projects), I created a new layer for that platform and I disabled in the collision matrix the collision between that layer and the one used for the player. The problem is that, now, the raycast cannot check the colliders from that layer regardless the layermask.
There is any way to make this work?
Thanks,I am programming a 2D game where the player can jump. I have a platform that I want to access from below. In the beggining, the rigidbody2d of the player object was kinematic, because I controll the falls and jumps by scripting. However, in order to make the player collide I need a dynamic rigidbody2d.
Since I changed the rigidbody2d, I am unable to get to the platform because the player collides with it. In Unity you can set that the kinematic rigidbodies collides but only in 3D projects. Therefore I created a new layer for this kind of platform and, in the collision matrix, I disabled the colission between the Player layer and this new one. Nevertheless, the raycast function I use to check if there is ground below the player is not now able to detect this collider despite the Layermask. There is a way to make this work?
Thanks.
You're looking for PlatformEffector2D.
This will ignore collisions from a configurable direction (below by default) and not from others. Example image taken from a different question about them:
