贪吃蛇小项目

C#核心实践/贪吃蛇/Lesson4/Food.cs

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+using System;
+using System.Collections.Generic;
+using System.Linq;
+using System.Text;
+using System.Threading.Tasks;
+
+namespace 贪吃蛇
+{
+    class Food : GameObject
+    {
+        public Food(Snake snake)
+        {
+            RandomPos(snake);
+        }
+        public override void Draw()
+        {
+            Console.ForegroundColor = ConsoleColor.Cyan;
+            Console.SetCursorPosition(pos.x, pos.y);
+            Console.Write("◎");
+        }
+        public void RandomPos(Snake snake)
+        {
+            Random r = new Random();
+            int x = r.Next(1, Game.w / 2 - 1) * 2; //1-38的随机数
+            int y = r.Next(2, Game.h - 3); //1-18的随机数
+            pos = new Position(x, y);
+            //判断生成的位置是否和蛇身重合
+            if (snake.CheckSamePos(pos))
+            {
+                 RandomPos(snake);
+            }
+
+        }
+        
+    }
+}