How to Ignore Collision between Objects

Question

1.I have written an script that uses ontriggerenter to find when a cannon ball hits another ship in a 2D game.

private void OnTriggerEnter(Collider other)
{
         


        

Answer 1

To ignore collision, use Physics.IgnoreCollision.

There is also Physics.IgnoreLayerCollision which is used to ignore collisions on layers.

Just put all the Objects you want to ignore in a layer then invoke the function to ignore layers on them.

Ignore Collison 3D:

Physics.IgnoreCollision(yourFirstCollider, yourSecondCollider, true)

or

Physics.IgnoreLayerCollision(yourFirstLayer, yourOtherLayer, true);

Reset/Recognize Collison 2D:

Physics2D.IgnoreCollision(yourFirstCollider, yourSecondCollider, false);

or

Physics2D.IgnoreLayerCollision(yourFirstLayer, yourOtherLayer, false)

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Both layers do not have to be the-same. You can ignore collision on Objects from different layers. This can also be accomplished through the Editor without code by assigning each GameObject layer and going to Edit --> Project Settings --> Physics --> or Edit --> Project Settings --> Physics 2D then configure which layers should collide with one another from there.