How do I get the Box Collidor to form around the shape of the Sprite?

Question

I am creating an angry Birds like game with Physics objects. I have set up the rigid bodies and box colliders around them. The problem I'm having is that the box colliders form ... well a box around the sprite. However, I want the collider to form around the shape of the sprite/artwork. How do I this? Otherwise the result is the objects push against each other when the game starts and the structures fall down before the game starts. How do I fix this?

Answer 1

Answer by tanoshimi · Nov 15, 2016 at 12:46 PM

Sounds like you want to use a Polygon Collider 2D instead.

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Answer 2

Answer by roman_sedition · Nov 15, 2016 at 10:30 PM

I have a somewhat lazy solution .

If your sprites are smaller than 126 x 126, you can import your .png of the sprite into magicavoxel, and then export your voxel model of your sprite into unity and select 'Generate Colliders', which will put a meshcollider around the whole of it. Since your game is 2D and is in orthographic mode I don't think it should matter too much substituting a voxel model for a sprite. Unless your sprites are heavily animated.. then this could be the really laborous way.

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How do I get the Box Collidor to form around the shape of the Sprite?

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