### Playing Danmaku Animation in Swift

Source: https://github.com/qyz777/danmakukit/blob/master/README.md

This code demonstrates how to start the danmaku animation playback within the `DanmakuView` by calling its `play()` method.

```Swift
danmakuView.play()
```

--------------------------------

### Install with Swift Package Manager (Swift)

Source: https://github.com/qyz777/danmakukit/blob/master/README.md

Add the DanmakuKit dependency to your Package.swift file. Specify the repository URL and the minimum required version to integrate it using Swift Package Manager.

```swift
dependencies: [
    .package(url: "https://github.com/qyz777/DanmakuKit.git", from: "1.5.0")
],
targets: [
    .target( name: "YourTarget", dependencies: ["DanmakuKit"])
]
```

--------------------------------

### Installing DanmakuKit via Swift Package Manager in Swift

Source: https://github.com/qyz777/danmakukit/blob/master/README_CN.md

This Swift code snippet is used in a Package.swift file to declare the DanmakuKit dependency for a project using Swift Package Manager. It specifies the Git repository URL and the minimum version (`from: "1.5.0"`), and links the dependency to a target.

```Swift
dependencies: [
    .package(url: "https://github.com/qyz777/DanmakuKit.git", from: "1.5.0")
],
targets: [
    .target( name: "YourTarget", dependencies: ["DanmakuKit"])
]
```

--------------------------------

### Install with Cocoapods (Ruby)

Source: https://github.com/qyz777/danmakukit/blob/master/README.md

Add the DanmakuKit pod to your Podfile to integrate it using Cocoapods. Specify the desired version using the '~>' operator to allow patch updates.

```ruby
pod 'DanmakuKit', '~> 1.5.0'
```

--------------------------------

### Starting Danmaku Playback in Swift

Source: https://github.com/qyz777/danmakukit/blob/master/README_CN.md

This Swift code calls the `play()` method on a `DanmakuView` instance. This action initiates the animation and display of the danmaku cells that have been added to the view.

```Swift
danmakuView.play()
```

--------------------------------

### Installing DanmakuKit via CocoaPods in Ruby

Source: https://github.com/qyz777/danmakukit/blob/master/README_CN.md

This Ruby code snippet is used in a Podfile to declare the DanmakuKit dependency for a project using CocoaPods. It specifies the library name and a version constraint (`~> 1.5.0`) to ensure compatibility.

```Ruby
pod 'DanmakuKit', '~> 1.5.0'
```

--------------------------------

### Creating DanmakuView and Shooting Danmaku in Swift

Source: https://github.com/qyz777/danmakukit/blob/master/README_CN.md

This Swift code snippet shows how to initialize a `DanmakuView` instance. It then creates an instance of the custom `DanmakuTextCellModel`, sets its properties like `displayTime`, `text`, and `type`, calculates its size, and finally calls the `shoot` method on the `danmakuView` to add the danmaku to the display queue.

```Swift
let danmakuView = DanmakuView(frame: CGRect(x: 0, y: 0, width: 350, height: 250))
view.addSubview(danmakuView)
let cellModel = DanmakuTextCellModel(json: nil)
cellModel.displayTime = displayTime
cellModel.text = contents[index]
cellModel.identifier = String(arc4random())
cellModel.calculateSize()
cellModel.type = .floating
danmakuView.shoot(danmaku: cellModel)
```

--------------------------------

### Displaying Danmaku in DanmakuView in Swift

Source: https://github.com/qyz777/danmakukit/blob/master/README.md

This snippet shows how to initialize a `DanmakuView`, create an instance of a custom cell model (`DanmakuTextCellModel`), configure its properties, and add it to the view for display using the `shoot` method.

```Swift
let danmakuView = DanmakuView(frame: CGRect(x: 0, y: 0, width: 350, height: 250))
view.addSubview(danmakuView)
let cellModel = DanmakuTextCellModel(json: nil)
cellModel.displayTime = displayTime
cellModel.text = contents[index]
cellModel.identifier = String(arc4random())
cellModel.calculateSize()
cellModel.type = .floating
danmakuView.shoot(danmaku: cellModel)
```

--------------------------------

### Implementing Danmaku Cell Model in Swift

Source: https://github.com/qyz777/danmakukit/blob/master/README.md

This snippet shows how to create a custom danmaku cell model by inheriting from `DanmakuCellModel`. It includes properties for text, font, display time, type, and methods for calculating size and checking equality.

```Swift
class DanmakuTextCellModel: DanmakuCellModel {
    var identifier = ""
    
    var text = ""
    
    var font = UIFont.systemFont(ofSize: 15)
    
    var offsetTime: TimeInterval = 0
    
    var cellClass: DanmakuCell.Type {
        return DanmakuTextCell.self
    }
    
    var size: CGSize = .zero
    
    var track: UInt?
    
    var displayTime: Double = 8
    
    var type: DanmakuCellType = .floating
    
    var isPause = false
    
    func calculateSize() {
        size = NSString(string: text).boundingRect(with: CGSize(width: CGFloat(Float.infinity
            ), height: 20), options: [.usesFontLeading, .usesLineFragmentOrigin], attributes: [.font: font], context: nil).size
    }
    
    func isEqual(to cellModel: DanmakuCellModel) -> Bool {
        return identifier == cellModel.identifier
    }
}
```

--------------------------------

### Implementing Danmaku Cell View in Swift

Source: https://github.com/qyz777/danmakukit/blob/master/README.md

This code demonstrates how to create a custom danmaku cell view by inheriting from `DanmakuCell`. It overrides the `displaying` method to perform custom drawing using Core Graphics, noting that this method may not be called on the main thread.

```Swift
class DanmakuTextCell: DanmakuCell {
    required init(frame: CGRect) {
        super.init(frame: frame)
        backgroundColor = .clear
    }
    
    required init?(coder: NSCoder) {
        fatalError("init(coder:) has not been implemented")
    }
  
    override func displaying(_ context: CGContext, _ size: CGSize, _ isCancelled: Bool) {
        guard let model = model as? DanmakuTextCellModel else { return }
        let text = NSString(string: model.text)
        context.setLineWidth(1)
        context.setLineJoin(.round)
        context.setStrokeColor(UIColor.white.cgColor)
        context.saveGState()
        context.setTextDrawingMode(.stroke)
        let attributes: [NSAttributedString.Key: Any] = [.font: model.font, .foregroundColor: UIColor.white]
        text.draw(at: .zero, withAttributes: attributes)
        context.restoreGState()
        context.setTextDrawingMode(.fill)
        text.draw(at: .zero, withAttributes: attributes)
    }
}
```

--------------------------------

### Stopping and Cleaning Up DanmakuView in Swift

Source: https://github.com/qyz777/danmakukit/blob/master/README.md

This code demonstrates how to stop the danmaku animation and release associated resources within the `DanmakuView` by calling its `stop()` method. This method is automatically called when the view is destroyed.

```Swift
danmakuView.stop()
```

--------------------------------

### Defining Custom Cell Model for Text Danmaku in Swift

Source: https://github.com/qyz777/danmakukit/blob/master/README_CN.md

This Swift class defines a custom cell model, `DanmakuTextCellModel`, inheriting from `DanmakuCellModel`. It includes properties like `text`, `font`, `offsetTime`, and `displayTime` to store data for a text-based danmaku. It also implements the `calculateSize` method to determine the size of the danmaku based on its text and font, and the `isEqual` method for comparison.

```Swift
class DanmakuTextCellModel: DanmakuCellModel {
    var identifier = ""
    
    var text = ""
    
    var font = UIFont.systemFont(ofSize: 15)
    
    var offsetTime: TimeInterval = 0
    
    var cellClass: DanmakuCell.Type {
        return DanmakuTextCell.self
    }
    
    var size: CGSize = .zero
    
    var track: UInt?
    
    var displayTime: Double = 8
    
    var type: DanmakuCellType = .floating
    
    var isPause = false
    
    func calculateSize() {
        size = NSString(string: text).boundingRect(with: CGSize(width: CGFloat(Float.infinity
            ), height: 20), options: [.usesFontLeading, .usesLineFragmentOrigin], attributes: [.font: font], context: nil).size
    }
    
    func isEqual(to cellModel: DanmakuCellModel) -> Bool {
        return identifier == cellModel.identifier
    }
}
```

--------------------------------

### Pausing Danmaku Animation in Swift

Source: https://github.com/qyz777/danmakukit/blob/master/README.md

This code demonstrates how to pause the danmaku animation playback within the `DanmakuView` by calling its `pause()` method.

```Swift
danmakuView.pause()
```

--------------------------------

### Implementing Custom Cell View for Text Danmaku in Swift

Source: https://github.com/qyz777/danmakukit/blob/master/README_CN.md

This Swift class defines a custom cell view, `DanmakuTextCell`, inheriting from `DanmakuCell`. It overrides the `displaying` method to handle the drawing of the danmaku content using `CGContext`. This method is called on a background thread, requiring thread-safe drawing operations. It draws the text with a stroke and fill effect.

```Swift
class DanmakuTextCell: DanmakuCell {
    required init(frame: CGRect) {
        super.init(frame: frame)
        backgroundColor = .clear
    }
    
    required init?(coder: NSCoder) {
        fatalError("init(coder:) has not been implemented")
    }
  
    override func displaying(_ context: CGContext, _ size: CGSize, _ isCancelled: Bool) {
        guard let model = model as? DanmakuTextCellModel else { return }
        let text = NSString(string: model.text)
        context.setLineWidth(1)
        context.setLineJoin(.round)
        context.setStrokeColor(UIColor.white.cgColor)
        context.saveGState()
        context.setTextDrawingMode(.stroke)
        let attributes: [NSAttributedString.Key: Any] = [.font: model.font, .foregroundColor: UIColor.white]
        text.draw(at: .zero, withAttributes: attributes)
        context.restoreGState()
        context.setTextDrawingMode(.fill)
        text.draw(at: .zero, withAttributes: attributes)
    }
}
```

--------------------------------

### Stopping Danmaku Playback and Cleaning Resources in Swift

Source: https://github.com/qyz777/danmakukit/blob/master/README_CN.md

This Swift code calls the `stop()` method on a `DanmakuView` instance. This action stops the danmaku playback, removes all displayed danmaku, and cleans up associated resources. It is typically called when the view is being deallocated.

```Swift
danmakuView.stop()
```

--------------------------------

### Pausing Danmaku Playback in Swift

Source: https://github.com/qyz777/danmakukit/blob/master/README_CN.md

This Swift code calls the `pause()` method on a `DanmakuView` instance. This action temporarily halts the animation and movement of the danmaku cells currently displayed.

```Swift
danmakuView.pause()
```

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