How to add pixel-perfect physics to an SKSpriteNode
Swift version: 5.2
Pixel-perfect physics is just one line of code in SpriteKit. Don't believe me? Here you go:
player = SKSpriteNode(imageNamed: "player")
player.position = CGPoint(x: 100, y: 384)
player.physicsBody = SKPhysicsBody(texture: player.texture!, size: player.size)That last line is the one that does the magic: SpriteKit will use the alpha values of your sprite (i.e., the transparent pixels) to figure out which parts should be part of a collision.
As you might imagine, pixel-perfect collision detection is significantly slower than using rectangles or circles, so you should use it carefully.
Sponsor Hacking with Swift and reach the world's largest Swift community!
Available from iOS 7.0 – see Hacking with Swift tutorial 23
Similar solutions…
- How to create live playgrounds in Xcode
- How to create a random terrain tile map using SKTileMapNode and GKPerlinNoiseSource
- How to add a bar button to a navigation bar
- How to add a UIApplicationShortcutItem quick action for 3D Touch
- Adding items to an order with @EnvironmentObject
About the Swift Knowledge Base
This is part of the Swift Knowledge Base, a free, searchable collection of solutions for common iOS questions.
