002 《iOS 平台游戏开发：生态系统、特性与商业模式深度解析 (iOS Platform Video Game Development: In-depth Analysis of Ecosystem, Features, and Business Models)》

                                
                                    

                            
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// 加载图像资源
                        

                            
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let backgroundImage = UIImage(named: "background")
                        

                            
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// 加载音效资源
                        

                            
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let soundAction = SKAction.playSoundFileNamed("explosion.wav", waitForCompletion: false)
                        

                            
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// 加载数据文件
                        

                            
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if let dataFileURL = Bundle.main.url(forResource: "levelData", withExtension: "json") {
                        

                            
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    // 读取数据文件
                        

                            
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    do {
                        

                            
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        let levelData = try Data(contentsOf: dataFileURL)
                        

                            
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        // 处理数据
                        

                            
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    } catch {
                        

                            
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        print("Error loading level data: \(error)")
                        

                            
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    }
                        

                            
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}
                        
                                
                            

                                
                                    

                            
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import XCTest
                        

                            
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@testable import MyFirstiOSGame // 导入被测试的项目模块
                        

                            
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class GameLogicTests: XCTestCase {
                        

                            
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    func testExampleScoreCalculation() {
                        

                            
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        let gameLogic = GameLogic()
                        

                            
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        let score = gameLogic.calculateScore(enemiesKilled: 10, timeElapsed: 60)
                        

                            
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        XCTAssertEqual(score, 1000, "Score calculation is incorrect") // 断言分数计算结果是否为 1000
                        

                            
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    }
                        

                            
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    func testEnemySpawnRate() {
                        

                            
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        let gameLogic = GameLogic()
                        

                            
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        let spawnRate = gameLogic.getEnemySpawnRate(level: 5)
                        

                            
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        XCTAssertGreaterThan(spawnRate, 0, "Enemy spawn rate should be greater than 0") // 断言敌人生成速率是否大于 0
                        

                            
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    }
                        

                            
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}
                        
                                
                            

                                
                                    

                            
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import XCTest
                        

                            
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class MyFirstiOSGameUITests: XCTestCase {
                        

                            
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    override func setUpWithError() throws {
                        

                            
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        continueAfterFailure = false // 测试失败后是否继续执行后续测试
                        

                            
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    }
                        

                            
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    func testGameStartButton() throws {
                        

                            
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        let app = XCUIApplication()
                        

                            
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        app.launch() // 启动被测试的应用
                        

                            
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        let startButton = app.buttons["Start Game"] // 获取 "Start Game" 按钮
                        

                            
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        XCTAssertTrue(startButton.exists, "Start button should exist") // 断言 "Start Game" 按钮是否存在
                        

                            
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        startButton.tap() // 点击 "Start Game" 按钮
                        

                            
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        let gameScene = app.otherElements["gameScene"] // 获取游戏场景元素 (假设游戏场景元素 accessibilityIdentifier 为 "gameScene")
                        

                            
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        XCTAssertTrue(gameScene.exists, "Game scene should be displayed after tapping start button") // 断言点击 "Start Game" 按钮后游戏场景是否显示
                        

                            
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    }
                        

                            
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}
                        
                                
                            

                                
                                    

                            
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import MetalKit
                        

                            
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class MetalView: MTKView {
                        

                            
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    var commandQueue: MTLCommandQueue!
                        

                            
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    var renderPipelineState: MTLRenderPipelineState!
                        

                            
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    override init(frame frameRect: CGRect, device: MTLDevice?) {
                        

                            
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        super.init(frame: frameRect, device: device)
                        

                            
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        guard let device = device else {
                        

                            
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            fatalError("Metal device is not supported.")
                        

                            
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        }
                        

                            
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        self.device = device
                        

                            
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        // 1. 创建命令队列 (Create Command Queue)
                        

                            
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        commandQueue = device.makeCommandQueue()
                        

                            
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        // 2. 加载着色器函数 (Load Shader Functions)
                        

                            
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        let defaultLibrary = device.makeDefaultLibrary()!
                        

                            
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        let vertexFunction = defaultLibrary.makeFunction(name: "vertexShader")!
                        

                            
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        let fragmentFunction = defaultLibrary.makeFunction(name: "fragmentShader")!
                        

                            
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        // 3. 配置渲染管线描述符 (Configure Render Pipeline Descriptor)
                        

                            
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        let renderPipelineDescriptor = MTLRenderPipelineDescriptor()
                        

                            
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        renderPipelineDescriptor.vertexFunction = vertexFunction
                        

                            
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        renderPipelineDescriptor.fragmentFunction = fragmentFunction
                        

                            
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        renderPipelineDescriptor.colorAttachments[0].pixelFormat = .bgra8Unorm // 颜色附件格式
                        

                            
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        do {
                        

                            
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            // 4. 创建渲染管线状态 (Create Render Pipeline State)
                        

                            
30
                            
            renderPipelineState = try device.makeRenderPipelineState(descriptor: renderPipelineDescriptor)
                        

                            
31
                            
        } catch {
                        

                            
32
                            
            fatalError("Failed to create render pipeline state: \(error)")
                        

                            
33
                            
        }
                        

                            
34
                            
    }
                        

                            
35
                            

                        

                            
36
                            
    required init(coder: NSCoder) {
                        

                            
37
                            
        fatalError("init(coder:) has not been implemented")
                        

                            
38
                            
    }
                        

                            
39
                            

                        

                            
40
                            
    override func draw(_ rect: CGRect) {
                        

                            
41
                            
        guard let drawable = currentDrawable,
                        

                            
42
                            
              let renderPassDescriptor = currentRenderPassDescriptor else {
                        

                            
43
                            
            return
                        

                            
44
                            
        }
                        

                            
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46
                            
        // 1. 创建命令缓冲区 (Create Command Buffer)
                        

                            
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        let commandBuffer = commandQueue.makeCommandBuffer()!
                        

                            
48
                            

                        

                            
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        // 2. 创建渲染命令编码器 (Create Render Command Encoder)
                        

                            
50
                            
        let renderEncoder = commandBuffer.makeRenderCommandEncoder(descriptor: renderPassDescriptor)!
                        

                            
51
                            

                        

                            
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        renderEncoder.setRenderPipelineState(renderPipelineState)
                        

                            
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        // 3. 设置顶点数据 (Set Vertex Data)
                        

                            
55
                            
        let vertices: [Float] = [
                        

                            
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            0.0,  0.5, 0.0, 1.0, // 顶点 1: (x, y, z, w), 红色
                        

                            
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           -0.5, -0.5, 0.0, 0.0, // 顶点 2: (x, y, z, w), 绿色
                        

                            
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            0.5, -0.5, 1.0, 0.0  // 顶点 3: (x, y, z, w), 蓝色
                        

                            
59
                            
        ]
                        

                            
60
                            
        let vertexBuffer = device!.makeBuffer(bytes: vertices, length: vertices.count * MemoryLayout<Float>.size, options: [])!
                        

                            
61
                            
        renderEncoder.setVertexBuffer(vertexBuffer, offset: 0, index: 0)
                        

                            
62
                            

                        

                            
63
                            
        // 4. 绘制图元 (Draw Primitives)
                        

                            
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        renderEncoder.drawPrimitives(type: .triangle, vertexStart: 0, vertexCount: 3)
                        

                            
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        // 5. 结束编码 (End Encoding)
                        

                            
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        renderEncoder.endEncoding()
                        

                            
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        // 6. 提交命令缓冲区并呈现可绘制对象 (Commit Command Buffer and Present Drawable)
                        

                            
70
                            
        commandBuffer.present(drawable)
                        

                            
71
                            
        commandBuffer.commit()
                        

                            
72
                            
    }
                        

                            
73
                            
}
                        
                                
                            

                                
                                    

                            
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#include <metal_stdlib>
                        

                            
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using namespace metal;
                        

                            
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// 顶点着色器 (Vertex Shader)
                        

                            
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vertex float4 vertexShader(device const float4 *vertex_array [[buffer(0)]],
                        

                            
6
                            
                          uint vertex_id [[vertex_id]]) {
                        

                            
7
                            
    return vertex_array[vertex_id];
                        

                            
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}
                        

                            
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// 片元着色器 (Fragment Shader)
                        

                            
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fragment half4 fragmentShader(float4 position [[stage_in]]) {
                        

                            
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    // 根据顶点位置设置颜色 (Set color based on vertex position)
                        

                            
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    if (position.x > 0.0 && position.y > 0.0) {
                        

                            
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        return half4(1.0, 0.0, 0.0, 1.0); // 红色
                        

                            
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    } else if (position.x < 0.0 && position.y < 0.0) {
                        

                            
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        return half4(0.0, 1.0, 0.0, 1.0); // 绿色
                        

                            
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    } else {
                        

                            
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        return half4(0.0, 0.0, 1.0, 1.0); // 蓝色
                        

                            
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    }
                        

                            
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}
                        
                                
                            

                                
                                    

                            
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#import <OpenGLES/ES2/gl.h>
                        

                            
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#import <QuartzCore/CAMetalLayer.h>
                        

                            
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@interface EAGLView : UIView
                        

                            
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@property (nonatomic, strong) EAGLContext *context;
                        

                            
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@property (nonatomic, assign) GLuint program;
                        

                            
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@end
                        

                            
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@implementation EAGLView
                        

                            
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+ (Class)layerClass {
                        

                            
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    return [CAEAGLLayer class];
                        

                            
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}
                        

                            
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- (instancetype)initWithFrame:(CGRect)frame {
                        

                            
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    self = [super initWithFrame:frame];
                        

                            
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    if (self) {
                        

                            
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        [self setupLayer];
                        

                            
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        [self setupContext];
                        

                            
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        [self setupRenderBuffer];
                        

                            
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        [self setupFrameBuffer];
                        

                            
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        [self compileShaders];
                        

                            
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    }
                        

                            
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    return self;
                        

                            
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}
                        

                            
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- (void)setupLayer {
                        

                            
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    CAEAGLLayer *eaglLayer = (CAEAGLLayer *)self.layer;
                        

                            
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    eaglLayer.opaque = YES;
                        

                            
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    eaglLayer.drawableProperties = @{kEAGLDrawablePropertyRetainedBacking : @(NO),
                        

                            
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                                         kEAGLDrawablePropertyColorFormat : kEAGLColorFormatRGBA8};
                        

                            
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}
                        

                            
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- (void)setupContext {
                        

                            
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    EAGLContext *context = [[EAGLContext alloc] initWithAPI:kEAGLRenderingAPIOpenGLES2];
                        

                            
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    if (!context) {
                        

                            
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        NSLog(@"Failed to create ES context");
                        

                            
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        return;
                        

                            
39
                            
    }
                        

                            
40
                            
    if (![EAGLContext setCurrentContext:context]) {
                        

                            
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        NSLog(@"Failed to set current OpenGL context");
                        

                            
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        return;
                        

                            
43
                            
    }
                        

                            
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    self.context = context;
                        

                            
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}
                        

                            
46
                            

                        

                            
47
                            
- (void)setupRenderBuffer {
                        

                            
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    GLuint renderBuffer;
                        

                            
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    glGenRenderbuffers(1, &renderBuffer);
                        

                            
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    glBindRenderbuffer(GL_RENDERBUFFER, renderBuffer);
                        

                            
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    [self.context renderbufferStorage:GL_RENDERBUFFER fromDrawable:(CAEAGLLayer *)self.layer];
                        

                            
52
                            
}
                        

                            
53
                            

                        

                            
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- (void)setupFrameBuffer {
                        

                            
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    GLuint frameBuffer;
                        

                            
56
                            
    glGenFramebuffers(1, &frameBuffer);
                        

                            
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    glBindFramebuffer(GL_FRAMEBUFFER, frameBuffer);
                        

                            
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    glFramebufferRenderbuffer(GL_FRAMEBUFFER, GL_COLOR_ATTACHMENT0, GL_RENDERBUFFER, 0);
                        

                            
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}
                        

                            
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- (void)compileShaders {
                        

                            
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    // 顶点着色器代码 (Vertex Shader Source)
                        

                            
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    NSString *vertexShaderString = @"attribute vec4 position; \n"
                        

                            
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                                   "void main() { \n"
                        

                            
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                                   "  gl_Position = position; \n"
                        

                            
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                                   "}";
                        

                            
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    // 片元着色器代码 (Fragment Shader Source)
                        

                            
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    NSString *fragmentShaderString = @"void main() { \n"
                        

                            
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                                     "  gl_FragColor = vec4(1.0, 0.0, 0.0, 1.0); \n" // 红色
                        

                            
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                                     "}";
                        

                            
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73
                            
    GLuint vertexShader = [self compileShader:vertexShaderString withType:GL_VERTEX_SHADER];
                        

                            
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    GLuint fragmentShader = [self compileShader:fragmentShaderString withType:GL_FRAGMENT_SHADER];
                        

                            
75
                            

                        

                            
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    self.program = glCreateProgram();
                        

                            
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    glAttachShader(self.program, vertexShader);
                        

                            
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    glAttachShader(self.program, fragmentShader);
                        

                            
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    glLinkProgram(self.program);
                        

                            
80
                            

                        

                            
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    GLint linkSuccess;
                        

                            
82
                            
    glGetProgramiv(self.program, GL_LINK_STATUS, &linkSuccess);
                        

                            
83
                            
    if (linkSuccess == GL_FALSE) {
                        

                            
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        GLchar messages[256];
                        

                            
85
                            
        glGetProgramInfoLog(self.program, sizeof(messages), 0, &messages[0]);
                        

                            
86
                            
        NSString *messageString = [NSString stringWithUTF8String:messages];
                        

                            
87
                            
        NSLog(@"Program link error: %@", messageString);
                        

                            
88
                            
        exit(1);
                        

                            
89
                            
    }
                        

                            
90
                            

                        

                            
91
                            
    glUseProgram(self.program);
                        

                            
92
                            
    glDeleteShader(vertexShader);
                        

                            
93
                            
    glDeleteShader(fragmentShader);
                        

                            
94
                            
}
                        

                            
95
                            

                        

                            
96
                            
- (GLuint)compileShader:(NSString *)shaderString withType:(GLenum)shaderType {
                        

                            
97
                            
    GLuint shader = glCreateShader(shaderType);
                        

                            
98
                            
    const char *shaderSource = [shaderString UTF8String];
                        

                            
99
                            
    glShaderSource(shader, 1, &shaderSource, NULL);
                        

                            
100
                            
    glCompileShader(shader);
                        

                            
101
                            

                        

                            
102
                            
    GLint compileSuccess;
                        

                            
103
                            
    glGetShaderiv(shader, GL_COMPILE_STATUS, &compileSuccess);
                        

                            
104
                            
    if (compileSuccess == GL_FALSE) {
                        

                            
105
                            
        GLchar messages[256];
                        

                            
106
                            
        glGetShaderInfoLog(shader, sizeof(messages), 0, &messages[0]);
                        

                            
107
                            
        NSString *messageString = [NSString stringWithUTF8String:messages];
                        

                            
108
                            
        NSLog(@"Shader compile error: %@", messageString);
                        

                            
109
                            
        exit(1);
                        

                            
110
                            
    }
                        

                            
111
                            
    return shader;
                        

                            
112
                            
}
                        

                            
113
                            

                        

                            
114
                            
- (void)drawRect:(CGRect)rect {
                        

                            
115
                            
    glClearColor(0.0f, 0.0f, 1.0f, 1.0f); // 蓝色背景
                        

                            
116
                            
    glClear(GL_COLOR_BUFFER_BIT);
                        

                            
117
                            

                        

                            
118
                            
    // 顶点数据 (Vertex Data)
                        

                            
119
                            
    GLfloat vertices[] = {
                        

                            
120
                            
        0.0f,  0.5f, 0.0f,
                        

                            
121
                            
       -0.5f, -0.5f, 0.0f,
                        

                            
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        0.5f, -0.5f, 0.0f
                        

                            
123
                            
    };
                        

                            
124
                            

                        

                            
125
                            
    glVertexAttribPointer(glGetAttribLocation(self.program, "position"), 3, GL_FLOAT, GL_FALSE, 0, vertices);
                        

                            
126
                            
    glEnableVertexAttribArray(glGetAttribLocation(self.program, "position"));
                        

                            
127
                            

                        

                            
128
                            
    glDrawArrays(GL_TRIANGLES, 0, 3);
                        

                            
129
                            

                        

                            
130
                            
    [self.context presentRenderbuffer:GL_RENDERBUFFER];
                        

                            
131
                            
}
                        

                            
132
                            

                        

                            
133
                            
@end
                        
                                
                            

                                
                                    

                            
1
                            
import UIKit
                        

                            
2
                            

                        

                            
3
                            
class AnimationView: UIView {
                        

                            
4
                            
    let animatedLayer = CALayer()
                        

                            
5
                            

                        

                            
6
                            
    override init(frame: CGRect) {
                        

                            
7
                            
        super.init(frame: frame)
                        

                            
8
                            
        setupLayer()
                        

                            
9
                            
    }
                        

                            
10
                            

                        

                            
11
                            
    required init?(coder: NSCoder) {
                        

                            
12
                            
        super.init(coder: coder)
                        

                            
13
                            
        setupLayer()
                        

                            
14
                            
    }
                        

                            
15
                            

                        

                            
16
                            
    func setupLayer() {
                        

                            
17
                            
        animatedLayer.backgroundColor = UIColor.red.cgColor
                        

                            
18
                            
        animatedLayer.bounds = CGRect(x: 0, y: 0, width: 50, height: 50)
                        

                            
19
                            
        animatedLayer.position = CGPoint(x: 50, y: 100)
                        

                            
20
                            
        layer.addSublayer(animatedLayer)
                        

                            
21
                            
    }
                        

                            
22
                            

                        

                            
23
                            
    override func touchesBegan(_ touches: Set<UITouch>, with event: UIEvent?) {
                        

                            
24
                            
        // 创建基本动画 (Create Basic Animation)
                        

                            
25
                            
        let animation = CABasicAnimation(keyPath: "position.x")
                        

                            
26
                            
        animation.fromValue = animatedLayer.position.x
                        

                            
27
                            
        animation.toValue = bounds.width - 50
                        

                            
28
                            
        animation.duration = 1.0 // 动画持续时间 (Duration)
                        

                            
29
                            
        animation.timingFunction = CAMediaTimingFunction(name: .easeInEaseOut) // 缓动函数 (Timing Function)
                        

                            
30
                            
        animation.fillMode = .forwards // 动画结束后保持最终状态 (Fill Mode)
                        

                            
31
                            
        animation.isRemovedOnCompletion = false // 动画结束后不移除 (Removed on Completion)
                        

                            
32
                            

                        

                            
33
                            
        // 添加动画到图层 (Add Animation to Layer)
                        

                            
34
                            
        animatedLayer.add(animation, forKey: "positionXAnimation")
                        

                            
35
                            
        animatedLayer.position = CGPoint(x: bounds.width - 50, y: 100) // 更新图层模型树位置 (Update Layer Model Tree Position)
                        

                            
36
                            
    }
                        

                            
37
                            
}
                        
                                
                            

                                
                                    

                            
1
                            
import UIKit
                        

                            
2
                            

                        

                            
3
                            
class TouchView: UIView {
                        

                            
4
                            
    var touchPoints: [CGPoint] = [] // 存储触摸点 (Store touch points)
                        

                            
5
                            

                        

                            
6
                            
    override func touchesBegan(_ touches: Set<UITouch>, with event: UIEvent?) {
                        

                            
7
                            
        super.touchesBegan(touches, with: event)
                        

                            
8
                            
        for touch in touches {
                        

                            
9
                            
            let location = touch.location(in: self) // 获取触摸点在视图中的位置 (Get touch location in view)
                        

                            
10
                            
            touchPoints.append(location)
                        

                            
11
                            
        }
                        

                            
12
                            
        setNeedsDisplay() // 标记视图需要重绘 (Mark view needs redraw)
                        

                            
13
                            
    }
                        

                            
14
                            

                        

                            
15
                            
    override func touchesMoved(_ touches: Set<UITouch>, with event: UIEvent?) {
                        

                            
16
                            
        super.touchesMoved(touches, with: event)
                        

                            
17
                            
        for touch in touches {
                        

                            
18
                            
            let location = touch.location(in: self)
                        

                            
19
                            
            touchPoints.append(location)
                        

                            
20
                            
        }
                        

                            
21
                            
        setNeedsDisplay()
                        

                            
22
                            
    }
                        

                            
23
                            

                        

                            
24
                            
    override func touchesEnded(_ touches: Set<UITouch>, with event: UIEvent?) {
                        

                            
25
                            
        super.touchesEnded(touches, with: event)
                        

                            
26
                            
        touchPoints.removeAll() // 清空触摸点 (Clear touch points)
                        

                            
27
                            
        setNeedsDisplay()
                        

                            
28
                            
    }
                        

                            
29
                            

                        

                            
30
                            
    override func touchesCancelled(_ touches: Set<UITouch>, with event: UIEvent?) {
                        

                            
31
                            
        super.touchesCancelled(touches, with: event)
                        

                            
32
                            
        touchPoints.removeAll()
                        

                            
33
                            
        setNeedsDisplay()
                        

                            
34
                            
    }
                        

                            
35
                            

                        

                            
36
                            
    override func draw(_ rect: CGRect) {
                        

                            
37
                            
        super.draw(rect)
                        

                            
38
                            
        guard let context = UIGraphicsGetCurrentContext() else {
                        

                            
39
                            
            return
                        

                            
40
                            
        }
                        

                            
41
                            

                        

                            
42
                            
        context.setLineWidth(2.0)
                        

                            
43
                            
        context.setStrokeColor(UIColor.red.cgColor)
                        

                            
44
                            

                        

                            
45
                            
        for point in touchPoints {
                        

                            
46
                            
            let circleRect = CGRect(x: point.x - 10, y: point.y - 10, width: 20, height: 20)
                        

                            
47
                            
            context.addEllipse(in: circleRect) // 绘制圆形 (Draw circle)
                        

                            
48
                            
        }
                        

                            
49
                            

                        

                            
50
                            
        context.strokePath()
                        

                            
51
                            
    }
                        

                            
52
                            
}
                        
                                
                            

                                
                                    

                            
1
                            
let motionManager = CMMotionManager()
                        
                                
                            

                                
                                    

                            
1
                            
if motionManager.isAccelerometerAvailable {
                        

                            
2
                            
    // 加速计可用 (Accelerometer is available)
                        

                            
3
                            
}
                        

                            
4
                            
if motionManager.isGyroAvailable {
                        

                            
5
                            
    // 陀螺仪可用 (Gyroscope is available)
                        

                            
6
                            
}
                        

                            
7
                            
if motionManager.isMagnetometerAvailable {
                        

                            
8
                            
    // 磁力计可用 (Magnetometer is available)
                        

                            
9
                            
}
                        

                            
10
                            
if motionManager.isDeviceMotionAvailable {
                        

                            
11
                            
    // 运动处理器可用 (Device motion is available)
                        

                            
12
                            
}
                        
                                
                            

                                
                                    

                            
1
                            
motionManager.accelerometerUpdateInterval = 1.0 / 60.0 // 60 Hz
                        

                            
2
                            
motionManager.gyroUpdateInterval = 1.0 / 60.0
                        

                            
3
                            
motionManager.magnetometerUpdateInterval = 1.0 / 60.0
                        

                            
4
                            
motionManager.deviceMotionUpdateInterval = 1.0 / 60.0
                        
                                
                            

                                
                                    

                            
1
                            
if motionManager.isAccelerometerAvailable {
                        

                            
2
                            
    motionManager.startAccelerometerUpdates(to: OperationQueue.main) { (data, error) in
                        

                            
3
                            
        if let accelerometerData = data {
                        

                            
4
                            
            let x = accelerometerData.acceleration.x
                        

                            
5
                            
            let y = accelerometerData.acceleration.y
                        

                            
6
                            
            let z = accelerometerData.acceleration.z
                        

                            
7
                            
            // 处理加速计数据 (Process accelerometer data)
                        

                            
8
                            
            print("Accelerometer: x = \(x), y = \(y), z = \(z)")
                        

                            
9
                            
        }
                        

                            
10
                            
    }
                        

                            
11
                            
}
                        
                                
                            

                                
                                    

                            
1
                            
if motionManager.isAccelerometerAvailable {
                        

                            
2
                            
    if let accelerometerData = motionManager.accelerometerData {
                        

                            
3
                            
        let x = accelerometerData.acceleration.x
                        

                            
4
                            
        let y = accelerometerData.acceleration.y
                        

                            
5
                            
        let z = accelerometerData.acceleration.z
                        

                            
6
                            
        // 处理加速计数据 (Process accelerometer data)
                        

                            
7
                            
        print("Accelerometer (pull): x = \(x), y = \(y), z = \(z)")
                        

                            
8
                            
    }
                        

                            
9
                            
}
                        
                                
                            

                                
                                    

                            
1
                            
motionManager.stopAccelerometerUpdates()
                        

                            
2
                            
motionManager.stopGyroUpdates()
                        

                            
3
                            
motionManager.stopMagnetometerUpdates()
                        

                            
4
                            
motionManager.stopDeviceMotionUpdates()
                        
                                
                            

                                
                                    

                            
1
                            
import UIKit
                        

                            
2
                            
import CoreMotion
                        

                            
3
                            

                        

                            
4
                            
class SensorControlView: UIView {
                        

                            
5
                            
    let motionManager = CMMotionManager()
                        

                            
6
                            
    let spriteLayer = CALayer()
                        

                            
7
                            

                        

                            
8
                            
    override init(frame: CGRect) {
                        

                            
9
                            
        super.init(frame: frame)
                        

                            
10
                            
        setupSprite()
                        

                            
11
                            
        startAccelerometerUpdates()
                        

                            
12
                            
    }
                        

                            
13
                            

                        

                            
14
                            
    required init?(coder: NSCoder) {
                        

                            
15
                            
        super.init(coder: coder)
                        

                            
16
                            
        setupSprite()
                        

                            
17
                            
        startAccelerometerUpdates()
                        

                            
18
                            
    }
                        

                            
19
                            

                        

                            
20
                            
    func setupSprite() {
                        

                            
21
                            
        spriteLayer.backgroundColor = UIColor.blue.cgColor
                        

                            
22
                            
        spriteLayer.bounds = CGRect(x: 0, y: 0, width: 50, height: 50)
                        

                            
23
                            
        spriteLayer.position = CGPoint(x: bounds.midX, y: bounds.midY)
                        

                            
24
                            
        layer.addSublayer(spriteLayer)
                        

                            
25
                            
    }
                        

                            
26
                            

                        

                            
27
                            
    func startAccelerometerUpdates() {
                        

                            
28
                            
        if motionManager.isAccelerometerAvailable {
                        

                            
29
                            
            motionManager.accelerometerUpdateInterval = 1.0 / 60.0
                        

                            
30
                            
            motionManager.startAccelerometerUpdates(to: OperationQueue.main) { (data, error) in
                        

                            
31
                            
                if let accelerometerData = data {
                        

                            
32
                            
                    let accelerationX = accelerometerData.acceleration.x
                        

                            
33
                            
                    // 根据加速度 X 值调整精灵的水平位置 (Adjust sprite horizontal position based on acceleration X)
                        

                            
34
                            
                    let newPositionX = self.spriteLayer.position.x + CGFloat(accelerationX * 10)
                        

                            
35
                            
                    self.spriteLayer.position = CGPoint(x: newPositionX, y: self.spriteLayer.position.y)
                        

                            
36
                            

                        

                            
37
                            
                    // 边界检测，防止精灵移出屏幕 (Boundary detection to prevent sprite from moving off-screen)
                        

                            
38
                            
                    if self.spriteLayer.position.x < 25 {
                        

                            
39
                            
                        self.spriteLayer.position = CGPoint(x: 25, y: self.spriteLayer.position.y)
                        

                            
40
                            
                    } else if self.spriteLayer.position.x > self.bounds.width - 25 {
                        

                            
41
                            
                        self.spriteLayer.position = CGPoint(x: self.bounds.width - 25, y: self.spriteLayer.position.y)
                        

                            
42
                            
                    }
                        

                            
43
                            
                }
                        

                            
44
                            
            }
                        

                            
45
                            
        } else {
                        

                            
46
                            
            print("Accelerometer is not available.")
                        

                            
47
                            
        }
                        

                            
48
                            
    }
                        

                            
49
                            

                        

                            
50
                            
    deinit {
                        

                            
51
                            
        motionManager.stopAccelerometerUpdates()
                        

                            
52
                            
    }
                        

                            
53
                            
}
                        
                                
                            

                                
                                    

                            
1
                            
import AVFoundation
                        

                            
2
                            

                        

                            
3
                            
do {
                        

                            
4
                            
    let audioSession = AVAudioSession.sharedInstance()
                        

                            
5
                            
    try audioSession.setCategory(.playAndRecord, mode: .default) // 设置音频会话类别 (Set audio session category)
                        

                            
6
                            
    try audioSession.setActive(true) // 激活音频会话 (Activate audio session)
                        

                            
7
                            
} catch {
                        

                            
8
                            
    print("Failed to configure audio session: \(error)")
                        

                            
9
                            
}
                        
                                
                            

                                
                                    

                            
1
                            
let fileURL = getFileURL() // 获取音频文件 URL (Get audio file URL)
                        

                            
2
                            
let recordingSettings: [String: Any] = [
                        

                            
3
                            
    AVFormatIDKey: kAudioFormatMPEG4AAC, // 音频格式 (Audio format)
                        

                            
4
                            
    AVSampleRateKey: 44100.0, // 采样率 (Sample rate)
                        

                            
5
                            
    AVNumberOfChannelsKey: 1, // 声道数 (Number of channels)
                        

                            
6
                            
    AVEncoderAudioQualityKey: AVAudioQuality.high.rawValue // 音频质量 (Audio quality)
                        

                            
7
                            
]
                        

                            
8
                            

                        

                            
9
                            
var audioRecorder: AVAudioRecorder!
                        

                            
10
                            
do {
                        

                            
11
                            
    audioRecorder = try AVAudioRecorder(url: fileURL, settings: recordingSettings)
                        

                            
12
                            
    audioRecorder.delegate = self // 设置录音器代理 (Set recorder delegate)
                        

                            
13
                            
    audioRecorder.prepareToRecord() // 准备录音 (Prepare to record)
                        

                            
14
                            
} catch {
                        

                            
15
                            
    print("Failed to create audio recorder: \(error)")
                        

                            
16
                            
}
                        
                                
                            

                                
                                    

                            
1
                            
audioRecorder.record() // 开始录音 (Start recording)
                        

                            
2
                            
audioRecorder.stop() // 停止录音 (Stop recording)
                        
                                
                            

                                
                                    

                            
1
                            
extension ViewController: AVAudioRecorderDelegate {
                        

                            
2
                            
    func audioRecorderDidFinishRecording(_ recorder: AVAudioRecorder, successfully flag: Bool) {
                        

                            
3
                            
        if flag {
                        

                            
4
                            
            print("Audio recording finished successfully.")
                        

                            
5
                            
            // 录音成功 (Recording successful)
                        

                            
6
                            
        } else {
                        

                            
7
                            
            print("Audio recording failed.")
                        

                            
8
                            
            // 录音失败 (Recording failed)
                        

                            
9
                            
        }
                        

                            
10
                            
    }
                        

                            
11
                            

                        

                            
12
                            
    func audioRecorderEncodeErrorDidOccur(_ recorder: AVAudioRecorder, error: Error?) {
                        

                            
13
                            
        print("Audio recording encode error: \(error?.localizedDescription ?? "Unknown error")")
                        

                            
14
                            
        // 录音编码错误 (Recording encode error)
                        

                            
15
                            
    }
                        

                            
16
                            
}
                        
                                
                            

                                
                                    

                            
1
                            
SFSpeechRecognizer.requestAuthorization { (status) in
                        

                            
2
                            
    switch status {
                        

                            
3
                            
    case .authorized:
                        

                            
4
                            
        print("Speech recognition authorized.")
                        

                            
5
                            
        // 语音识别权限已授权 (Speech recognition authorized)
                        

                            
6
                            
    case .denied, .restricted, .notDetermined:
                        

                            
7
                            
        print("Speech recognition not authorized.")
                        

                            
8
                            
        // 语音识别权限未授权 (Speech recognition not authorized)
                        

                            
9
                            
    @unknown default:
                        

                            
10
                            
        fatalError()
                        

                            
11
                            
    }
                        

                            
12
                            
}
                        
                                
                            

                                
                                    

                            
1
                            
import Speech
                        

                            
2
                            

                        

                            
3
                            
let speechRecognizer = SFSpeechRecognizer(locale: Locale(identifier: "zh-CN"))! // 创建语音识别器 (Create speech recognizer)
                        

                            
4
                            
speechRecognizer.delegate = self // 设置语音识别器代理 (Set recognizer delegate)
                        

                            
5
                            

                        

                            
6
                            
var recognitionRequest: SFSpeechAudioBufferRecognitionRequest?
                        

                            
7
                            
var recognitionTask: SFSpeechRecognitionTask?
                        

                            
8
                            
let audioEngine = AVAudioEngine() // 音频引擎 (Audio engine)
                        
                                
                            

                                
                                    

                            
1
                            
let inputNode = audioEngine.inputNode
                        

                            
2
                            
recognitionRequest = SFSpeechAudioBufferRecognitionRequest()
                        

                            
3
                            
recognitionRequest?.shouldReportPartialResults = true // 允许返回部分识别结果 (Allow partial results)
                        

                            
4
                            

                        

                            
5
                            
let recordingFormat = inputNode.outputFormat(forBus: 0)
                        

                            
6
                            
inputNode.installTap(onBus: 0, bufferSize: 1024, format: recordingFormat) { (buffer, when) in
                        

                            
7
                            
    recognitionRequest?.append(buffer) // 将音频数据添加到识别请求 (Append audio data to recognition request)
                        

                            
8
                            
}
                        

                            
9
                            
audioEngine.prepare()
                        

                            
10
                            
do {
                        

                            
11
                            
    try audioEngine.start() // 启动音频引擎 (Start audio engine)
                        

                            
12
                            
} catch {
                        

                            
13
                            
    print("Audio engine start error: \(error)")
                        

                            
14
                            
}
                        
                                
                            

                                
                                    

                            
1
                            
recognitionTask = speechRecognizer.recognitionTask(with: recognitionRequest!) { (result, error) in
                        

                            
2
                            
    var isFinal = false
                        

                            
3
                            
    if let recognitionResult = result {
                        

                            
4
                            
        let bestString = recognitionResult.bestTranscription.formattedString // 获取最佳识别结果 (Get best recognition result)
                        

                            
5
                            
        print("Speech recognition result: \(bestString)")
                        

                            
6
                            
        isFinal = recognitionResult.isFinal
                        

                            
7
                            
    }
                        

                            
8
                            
    if error != nil || isFinal {
                        

                            
9
                            
        self.audioEngine.stop()
                        

                            
10
                            
        self.inputNode.removeTap(onBus: 0)
                        

                            
11
                            
        self.recognitionRequest = nil
                        

                            
12
                            
        self.recognitionTask = nil
                        

                            
13
                            
    }
                        

                            
14
                            
}
                        
                                
                            

                                
                                    

                            
1
                            
// ... (音频会话配置、语音识别器和音频引擎创建等代码，参考上述步骤) ...
                        

                            
2
                            

                        

                            
3
                            
func startRecordingAndRecognizeSpeech() {
                        

                            
4
                            
    // ... (配置音频输入源，参考上述步骤) ...
                        

                            
5
                            

                        

                            
6
                            
    recognitionTask = speechRecognizer.recognitionTask(with: recognitionRequest!) { (result, error) in
                        

                            
7
                            
        var isFinal = false
                        

                            
8
                            
        if let recognitionResult = result {
                        

                            
9
                            
            let bestString = recognitionResult.bestTranscription.formattedString
                        

                            
10
                            
            print("识别结果: \(bestString)") // 显示识别结果 (Display recognition result)
                        

                            
11
                            
            isFinal = recognitionResult.isFinal
                        

                            
12
                            
        }
                        

                            
13
                            
        if error != nil || isFinal {
                        

                            
14
                            
            self.audioEngine.stop()
                        

                            
15
                            
            self.inputNode.removeTap(onBus: 0)
                        

                            
16
                            
            self.recognitionRequest = nil
                        

                            
17
                            
            self.recognitionTask = nil
                        

                            
18
                            
        }
                        

                            
19
                            
    }
                        

                            
20
                            
    do {
                        

                            
21
                            
        try audioEngine.start()
                        

                            
22
                            
    } catch {
                        

                            
23
                            
        print("Audio engine start error: \(error)")
                        

                            
24
                            
    }
                        

                            
25
                            
}
                        

                            
26
                            

                        

                            
27
                            
func stopRecordingAndSpeechRecognition() {
                        

                            
28
                            
    audioEngine.stop()
                        

                            
29
                            
    recognitionRequest?.endAudio()
                        

                            
30
                            
}
                        
                                
                            

                                
                                    

                            
1
                            
var graph: AUGraph?
                        

                            
2
                            
var reverbUnit: AudioUnit?
                        

                            
3
                            
var outputUnit: AudioUnit?
                        

                            
4
                            

                        

                            
5
                            
// 1. 创建音频单元图 (Create Audio Unit Graph)
                        

                            
6
                            
NewAUGraph(&graph)
                        

                            
7
                            

                        

                            
8
                            
// 2. 添加 Audio Unit 节点 (Add Audio Unit Nodes)
                        

                            
9
                            
var reverbNode: AUNode = 0
                        

                            
10
                            
var outputNode: AUNode = 0
                        

                            
11
                            

                        

                            
12
                            
var reverbDesc = AudioComponentDescription()
                        

                            
13
                            
reverbDesc.componentType = kAudioUnitType_Effect
                        

                            
14
                            
reverbDesc.componentSubType = kAudioUnitSubType_Reverb2
                        

                            
15
                            
reverbDesc.componentManufacturer = kAudioUnitManufacturer_Apple
                        

                            
16
                            
AUGraphAddNode(graph!, &reverbDesc, &reverbNode)
                        

                            
17
                            

                        

                            
18
                            
var outputDesc = AudioComponentDescription()
                        

                            
19
                            
outputDesc.componentType = kAudioUnitType_Output
                        

                            
20
                            
outputDesc.componentSubType = kAudioUnitSubType_RemoteIO
                        

                            
21
                            
outputDesc.componentManufacturer = kAudioUnitManufacturer_Apple
                        

                            
22
                            
AUGraphAddNode(graph!, &outputDesc, &outputNode)
                        

                            
23
                            

                        

                            
24
                            
// 3. 获取 Audio Unit 实例 (Get Audio Unit Instances)
                        

                            
25
                            
AUGraphNodeInfo(graph!, reverbNode, nil, &reverbUnit)
                        

                            
26
                            
AUGraphNodeInfo(graph!, outputNode, nil, &outputUnit)
                        

                            
27
                            

                        

                            
28
                            
// 4. 连接 Audio Unit 节点 (Connect Audio Unit Nodes)
                        

                            
29
                            
AUGraphConnectNodeInput(graph!, reverbNode, 0, outputNode, 0)
                        

                            
30
                            

                        

                            
31
                            
// 5. 初始化和启动音频单元图 (Initialize and Start Audio Unit Graph)
                        

                            
32
                            
AUGraphInitialize(graph!)
                        

                            
33
                            
AUGraphStart(graph!)
                        
                                
                            

                                
                                    

                            
1
                            
// ... (AUGraph 创建、Audio Unit 节点添加、连接等代码，参考上述步骤) ...
                        

                            
2
                            

                        

                            
3
                            
// 获取混响 Audio Unit 实例 (Get Reverb Audio Unit Instance)
                        

                            
4
                            
var reverbUnit: AudioUnit?
                        

                            
5
                            
AUGraphNodeInfo(graph!, reverbNode, nil, &reverbUnit)
                        

                            
6
                            

                        

                            
7
                            
// 设置混响参数 (Set Reverb Parameters)
                        

                            
8
                            
var reverbPreset: AudioUnitParameterValue = kReverb2Param_Preset_LargeHall
                        

                            
9
                            
AudioUnitSetParameter(reverbUnit!, kReverb2Param_Preset, kAudioUnitScope_Global, 0, reverbPreset, 0)
                        

                            
10
                            

                        

                            
11
                            
// 获取输出 Audio Unit 实例 (Get Output Audio Unit Instance)
                        

                            
12
                            
var outputUnit: AudioUnit?
                        

                            
13
                            
AUGraphNodeInfo(graph!, outputNode, nil, &outputUnit)
                        

                            
14
                            

                        

                            
15
                            
// 设置音频输入回调函数 (Set Audio Input Callback Function)
                        

                            
16
                            
var inputProc = AURenderCallbackStruct(inputProc: playbackCallback, inputProcRefCon: &playerData)
                        

                            
17
                            
AUGraphSetNodeInputCallback(graph!, outputNode, 0, &inputProc)
                        

                            
18
                            

                        

                            
19
                            
// ... (音频文件读取、playerData 初始化等代码) ...
                        

                            
20
                            

                        

                            
21
                            
// 音频输入回调函数 (Audio Input Callback Function)
                        

                            
22
                            
func playbackCallback(inRefCon: UnsafeMutableRawPointer,
                        

                            
23
                            
                      ioActionFlags: UnsafeMutablePointer<AudioUnitRenderActionFlags>,
                        

                            
24
                            
                      inTimeStamp: UnsafePointer<AudioTimeStamp>,
                        

                            
25
                            
                      inBusNumber: UInt32,
                        

                            
26
                            
                      inNumberFrames: UInt32,
                        

                            
27
                            
                      ioData: UnsafeMutablePointer<AudioBufferList>?) -> OSStatus {
                        

                            
28
                            
    // ... (从音频文件读取数据，填充 ioData->mBuffers[0].mData) ...
                        

                            
29
                            
    return noErr
                        

                            
30
                            
}
                        

                            
31
                            

                        

                            
32
                            
// ... (AUGraph 初始化、启动等代码，参考上述步骤) ...