CODEWITHSUNDEEP
iosswiftsprite-kitskphysicsbody
DrDigg0R
DrDigg0R

Reputation: 51

More than one SKPhysicsBody from texture with alpha

I'm trying to create a SKPhysicsBody from a texture containing alpha values dynamically. Unfortunately the SKPhysicsBody is created from just one piece in the texture. How can I solve that?

Here's how the SKPhysicsBody is being created:

physicsBody = SKPhysicsBody(texture: texture!, size: size)

Edit:

Before

After

Upvotes: 3

Views: 204

Answers (1)

DrDigg0R
DrDigg0R

Reputation: 51

For the sake of completeness, I found a way to solve that problem now.

Sadly I can't just create the SKPhysicsBody with this convenient function from the texture. Once the texture would contain more than one shape it'll no longer work.

Basically what I do is to create the initial path manually, do all calculation on the paths itself and store them all, then re-create the SKPhysicsBodies from this paths after each change.

I use an open source clipping library (Clipper) which I pass the paths to clip and which gives me back a two dimensional CGPoint array containing all paths/polygons from all shapes. I use this paths to create the new SKPhysicsBodies and merge them with SKPhysicsBody(bodies: [SKPhysicsBody]).

enter image description here

Upvotes: 2

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