SpriteKitとかですかね https://developer.apple.com/documentation/spritekit https://developer.apple.com/documentation/spritekit/skemitternode/creating_particle_effects https://betterprogramming.pub/rain-lightning-animation-using-spritekit-in-swiftui-part-1-%EF%B8%8F-e2cf489e5d25

Create a Rain Animation Effect Using SpriteKit in SwiftUI

Create a complete Rain experience in SwiftUI using Particle Emitters and other SpriteKit magic potions

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