C#开发跨平台游戏——在游戏中使用背景音乐和按钮音效
上一篇我们讲了游戏中按钮的实现，今天我们来讲讲如何在游戏中播放音乐和按钮音效。
首先下载音乐和音效文件：MusicAndSound ,另外推荐一个下载游戏音效和音乐的网站：https://www.zapsplat.com/ ，里面可以下载到免费的音乐和音效。
然后解压，如图
背景音乐：【BackgroundMusic.mp3】按钮点击音效：【ButtonPressedSound.mp3】
将这文件拷贝到【HelloWorld.XNAContent】项目中
点击【HelloWorld.XNAContent】项目中的【BackgroundMusic.mp3】右键属性，
Asset Name设置为BackgroundMusic，
Content Importer设为 MP3 Audio File – XNA Framework
Content Processor设为 Song – XNA Framework
点击【HelloWorld.XNAContent】项目中的【ButtonPressed.mp3】右键属性，
Asset Name设置为ButtonPressed，
Content Importer设为 MP3 Audio File – XNA Framework
Content Processor设为 Sound Effect– XNA Framework
打开Game1.cs文件，找到【Texture2D button;】,在下面定义背景音乐和音效
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Song backgroundMusic;//定义背景音乐 SoundEffect buttonPressedSound;//定义按钮音效 |
找到【LoadContent()】方法，在方法体内加载背景音乐和按钮音效
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backgroundMusic = Content.Load<Song>("BackgroundMusic");//加载背景音乐 buttonPressedSound = Content.Load<SoundEffect>("ButtonPressedSound");//加载按钮音效 |
由于需要在游戏开始就播放音乐，可以在加载背景音乐后直接播放，所以可以在【LoadContent()】方法体中，添加如下代码
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MediaPlayer.IsRepeating = true;//重复播放背景音乐 MediaPlayer.Play(backgroundMusic);//播放背景音乐 //MediaPlayer.Volume = 1;//背景音乐声音大小(0.1f-1.0f) //MediaPlayer.Stop(); |
当然还有停止播放【MediaPlayer.Stop();】还可以控制声音的大小【MediaPlayer.Volume = 1;】
找到【Update(GameTime gameTime)】方法，找到上次提到的点击按钮的代码，输入
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buttonPressedSound.Play();//播放按钮音效 |
完整代码如下：
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using System; using System.Collections.Generic; using System.Linq; using Microsoft.Xna.Framework; using Microsoft.Xna.Framework.Audio; using Microsoft.Xna.Framework.Content; using Microsoft.Xna.Framework.GamerServices; using Microsoft.Xna.Framework.Graphics; using Microsoft.Xna.Framework.Input; using Microsoft.Xna.Framework.Media; namespace HelloWorld.XNA { /// <summary> /// This is the main type for your game /// </summary> public class Game1 : Microsoft.Xna.Framework.Game { GraphicsDeviceManager graphics; SpriteBatch spriteBatch; SpriteFont defaultFont; Color backgoundColor; Texture2D mouseCursor; Vector2 mouseCursorPosition; Texture2D buttonNormal; Texture2D buttonMoveOver; Texture2D buttonPressed; Rectangle buttonRect; Texture2D button; Song backgroundMusic;//定义背景音乐 SoundEffect buttonPressedSound;//定义按钮音效 public Game1() { graphics = new GraphicsDeviceManager(this); Content.RootDirectory = "Content"; graphics.PreferredBackBufferWidth = 800; graphics.PreferredBackBufferHeight = 600; graphics.IsFullScreen = false; IsMouseVisible = false; } /// <summary> /// Allows the game to perform any initialization it needs to before starting to run. /// This is where it can query for any required services and load any non-graphic /// related content. Calling base.Initialize will enumerate through any components /// and initialize them as well. /// </summary> protected override void Initialize() { // TODO: Add your initialization logic here base.Initialize(); } /// <summary> /// LoadContent will be called once per game and is the place to load /// all of your content. /// </summary> protected override void LoadContent() { // Create a new SpriteBatch, which can be used to draw textures. spriteBatch = new SpriteBatch(GraphicsDevice); // TODO: use this.Content to load your game content here defaultFont = Content.Load<SpriteFont>("DefaultFont"); backgoundColor = Color.CornflowerBlue; mouseCursor = Content.Load<Texture2D>("MouseCursor"); buttonNormal = Content.Load<Texture2D>("ButtonNormal"); buttonMoveOver = Content.Load<Texture2D>("ButtonMoveOver"); buttonPressed=Content.Load<Texture2D>("ButtonPressed"); buttonRect = new Rectangle(300, 200,128,128); button = buttonNormal; backgroundMusic = Content.Load<Song>("BackgroundMusic");//加载背景音乐 buttonPressedSound = Content.Load<SoundEffect>("ButtonPressedSound");//加载按钮音效 MediaPlayer.IsRepeating = true;//重复播放背景音乐 MediaPlayer.Play(backgroundMusic);//播放背景音乐 } /// <summary> /// UnloadContent will be called once per game and is the place to unload /// all content. /// </summary> protected override void UnloadContent() { // TODO: Unload any non ContentManager content here } /// <summary> /// Allows the game to run logic such as updating the world, /// checking for collisions, gathering input, and playing audio. /// </summary> /// <param name="gameTime">Provides a snapshot of timing values.</param> protected override void Update(GameTime gameTime) { // Allows the game to exit KeyboardState keyboardState = Keyboard.GetState(PlayerIndex.One); if(keyboardState.IsKeyDown(Keys.Escape)) { this.Exit(); } if(keyboardState.IsKeyDown(Keys.F10)) { graphics.IsFullScreen = true; graphics.ApplyChanges(); } if(keyboardState.IsKeyDown(Keys.F11)) { graphics.IsFullScreen = false; graphics.ApplyChanges(); } if (keyboardState.IsKeyDown(Keys.F12)) { graphics.PreferredBackBufferWidth = 1920; graphics.PreferredBackBufferHeight = 1080; graphics.ApplyChanges(); } MouseState mouseState = Mouse.GetState();//获取鼠标状态 if(mouseState.LeftButton==ButtonState.Pressed)//判断是否按下了鼠标左键 { backgoundColor = Color.Red;//将背景设置为红色 if (buttonRect.Contains(mouseState.X, mouseState.Y))//判断鼠标是否移动到按钮上并且按下 { button = buttonPressed;//将按钮设置为按下状态 buttonPressedSound.Play();//播放按钮音效 } } else { if (buttonRect.Contains(mouseState.X, mouseState.Y))//判断鼠标是否移动到按钮上 { button = buttonMoveOver;//将按钮设置为悬停状态 } else//鼠标不在按钮上 { button = buttonNormal;//将按钮设置为正常状态 } backgoundColor = Color.CornflowerBlue;//放开鼠标左键恢复成蓝色 } mouseCursorPosition = new Vector2(mouseState.X, mouseState.Y); // TODO: Add your update logic here base.Update(gameTime); } /// <summary> /// This is called when the game should draw itself. /// </summary> /// <param name="gameTime">Provides a snapshot of timing values.</param> protected override void Draw(GameTime gameTime) { GraphicsDevice.Clear(backgoundColor);//绘制游戏背景 // TODO: Add your drawing code here spriteBatch.Begin(); spriteBatch.DrawString(defaultFont, "这是我的第一个游戏", Vector2.Zero, Color.White); //绘制按钮 spriteBatch.Draw(button, buttonRect, Color.White); spriteBatch.Draw(mouseCursor,mouseCursorPosition,Color.White); spriteBatch.End(); base.Draw(gameTime); } } } |
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运行效果，由于gif图片没有声音，大家可以自己运行自己的代码来体验效果
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