游戏人生Silverlight(6) - 贪吃蛇[Silverlight 3.0(c#)]

/* 
 * 游戏的核心算法 
 */ 
 
using System; 
using System.Collections.Generic; 
using System.Linq; 
using System.Net; 
using System.Windows; 
using System.Windows.Controls; 
using System.Windows.Documents; 
using System.Windows.Input; 
using System.Windows.Media; 
using System.Windows.Media.Animation; 
using System.Windows.Shapes; 
 
using System.Windows.Media.Imaging; 
using System.Threading; 
 
namespace YYSnake.Core 
{ 
        public partial class Main : UserControl 
        { 
                private int _columns; // 网格列数 
                private int _rows; // 网格行数 
 
                private Dictionary<Body, CellPoint> _bodies = new Dictionary<Body, CellPoint>(); // 贪吃蛇每一段的集合
                private Dictionary<Bean, CellPoint> _beans = new Dictionary<Bean, CellPoint>(); // 豆的集合 
                private Dictionary<Skin, CellPoint> _skins = new Dictionary<Skin, CellPoint>(); // 蜕下来的皮的集合 
 
                private List<CellPoint> _emptyCells = new List<CellPoint>(); // 空网格的集合 
 
                private bool _enabled = false; // 游戏是否运行 
                private double _dt = 0.01; // 多少毫秒计算一次 
                private int _decimals = 1; // 计算小数时所保留的小数位 
                private double _speed = 80; // 蛇的运行速度 
                private Direction _moveDirection = Direction.Up; // 蛇的运行方向 
                private int _selfLength = 5; // 蛇的最小长度 
                private int _beansCount = 5; // 豆的最大出现数量 
                private int _ateCapacity = 10; // 食量（超过则蜕皮） 
 
                private bool _needRaiseAteEvent = false; // 在“蛇头所处位置进入了网格点区域内”时是否需要触发吃豆事件 
                private int _needBeansCount = 0; // 还需要增加的豆的数量 
 
                Random _random = new Random(); 
 
                public Main() 
                { 
                        InitializeComponent(); 
 
                        this.Loaded += new RoutedEventHandler(Main_Loaded); 
                } 
 
                void Main_Loaded(object sender, RoutedEventArgs e) 
                { 
                        this.Width = App.Width; // 640 
                        this.Height = App.Height; // 480 
 
                        _columns = (int)(Width / App.CellSize); // 40 
                        _rows = (int)(Height / App.CellSize); // 30 
 
                        // 防止动画飞出去 
                        RectangleGeometry rg = new RectangleGeometry(); 
                        rg.Rect = new Rect(0, 0, App.Width, App.Height); 
                        LayoutRoot.Clip = rg; 
 
                        bg.Width = App.Width; 
                        bg.Height = App.Height; 
 
                        ripple.RippleBackground = bg; 
 
                        CompositionTarget.Rendering += new EventHandler(CompositionTarget_Rendering); 
                } 
 
                /// <summary> 
                /// 初始化 
                /// </summary> 
                public void Init() 
                { 
                        _enabled = false; 
 
                        canvasBean.Children.Clear(); 
                        canvasSnake.Children.Clear(); 
                        canvasSkin.Children.Clear(); 
                        _beans.Clear(); 
                        _bodies.Clear(); 
                        _skins.Clear(); 
 
                        _emptyCells.Clear(); 
                        for (int i = 0; i < _columns; i++) 
                        { 
                                for (int j = 0; j < _rows; j++) 
                                { 
                                        _emptyCells.Add(new CellPoint(i, j)); 
                                } 
                        } 
 
                        _moveDirection = Direction.Up; 
 
                        InitSnake(); 
                } 
 
                /// <summary> 
                /// 蛇的初始化 
                /// </summary> 
                private void InitSnake() 
                { 
                        InitHead(); 
 
                        for (int i = 0; i < _selfLength - 1; i++) 
                                AddTail(); 
 
                        for (int i = 0; i < _beansCount; i++) 
                                AddBean(); 
                } 
 
                /// <summary> 
                /// 蛇头的初始化 
                /// </summary> 
                private void InitHead() 
                { 
                        Body head = new Body(BodyType.Head); 
                        head.MoveDirection = _moveDirection; 
 
                        CellPoint point = new CellPoint((int)(_columns / 2), (int)(_rows / 2)); 
                        head.SetValue(Canvas.LeftProperty, point.X * App.CellSize); 
                        head.SetValue(Canvas.TopProperty, point.Y * App.CellSize); 
 
                        _bodies.Add(head, point); 
                        canvasSnake.Children.Add(head); 
                } 
 
                /// <summary> 
                /// 增加一个尾巴 
                /// </summary> 
                private void AddTail() 
                { 
                        var prevBody = _bodies.Last().Key; 
                        var prevBodyPoint = _bodies.Last().Value; 
 
                        Body tail = new Body(BodyType.Tail); 
                        tail.MoveDirection = prevBody.MoveDirection; 
                        CellPoint tailPoint = new CellPoint(prevBodyPoint.X, prevBodyPoint.Y); 
 
                        switch (prevBody.MoveDirection) 
                        { 
                                case Direction.Up: 
                                        tail.SetValue(Canvas.LeftProperty, (double)prevBody.GetValue(Canvas.LeftProperty)); 
                                        tail.SetValue(Canvas.TopProperty, (double)prevBody.GetValue(Canvas.TopProperty) + App.CellSize); 
                                        tailPoint.Y++; 
                                        break; 
                                case Direction.Down: 
                                        tail.SetValue(Canvas.LeftProperty, (double)prevBody.GetValue(Canvas.LeftProperty)); 
                                        tail.SetValue(Canvas.TopProperty, (double)prevBody.GetValue(Canvas.TopProperty) - App.CellSize); 
                                        tailPoint.Y--; 
                                        break; 
                                case Direction.Left: 
                                        tail.SetValue(Canvas.LeftProperty, (double)prevBody.GetValue(Canvas.LeftProperty) + App.CellSize); 
                                        tail.SetValue(Canvas.TopProperty, (double)prevBody.GetValue(Canvas.TopProperty)); 
                                        tailPoint.X++; 
                                        break; 
                                case Direction.Right: 
                                        tail.SetValue(Canvas.LeftProperty, (double)prevBody.GetValue(Canvas.LeftProperty) - App.CellSize); 
                                        tail.SetValue(Canvas.TopProperty, (double)prevBody.GetValue(Canvas.TopProperty)); 
                                        tailPoint.X--; 
                                        break; 
                        } 
 
                        tailPoint = CorrectCellPoint(tailPoint); 
 
                        _bodies.Add(tail, tailPoint); 
                        canvasSnake.Children.Add(tail); 
                } 
 
                /// <summary> 
                /// 增加一个豆 
                /// </summary> 
                private void AddBean() 
                { 
                        if (_needBeansCount < _beansCount) 
                                _needBeansCount++; 
                } 
 
                private DateTime _prevAddBeanDateTime = DateTime.Now;

未完待续>>

本文转自webabcd 51CTO博客，原文链接：http://blog.51cto.com/webabcd/345618，如需转载请自行联系原作者