贪吃蛇小项目

2025-09-21 20:11:21 +08:00
parent 0a1446e7b3
commit 116b65164b
18 changed files with 695 additions and 25 deletions
@@ -0,0 +1,141 @@
+using System;
+using System.Collections.Generic;
+using System.Linq;
+using System.Text;
+using System.Threading.Tasks;
+
+namespace 贪吃蛇
+{
+    enum E_MoveDirection
+    {
+        Up,
+        Down,
+        Left,
+        Right
+    }
+    class Snake : IDraw
+    {
+        E_MoveDirection moveDirection;//记录蛇当前的移动方向
+        SnakeBody[] bodies; //存放蛇身体的数组
+        int nowNum;//用一个变量记录蛇的长度
+        public Snake(int x, int y)
+        {
+            moveDirection = E_MoveDirection.Right;
+            bodies = new SnakeBody[200];
+            bodies[0] = new SnakeBody(x, y, E_BodyType.Head);
+            nowNum = 1;
+        }
+        public void Draw()
+        {
+            //只画出当前的蛇身
+            for (int i = 0; i < nowNum; i++)
+            {
+                bodies[i].Draw();
+            }
+
+        }
+
+        #region Lesson7
+        //蛇的移动
+        public void Move()
+        {
+            //移动前擦除前一个位置
+            SnakeBody lastBody = bodies[nowNum - 1];
+            Console.SetCursorPosition(lastBody.pos.x, lastBody.pos.y);
+            Console.Write("  ");
+
+            for(int i = nowNum - 1; i > 0; i--)
+            {
+                bodies[i].pos = bodies[i - 1].pos;
+            }
+            switch (moveDirection)
+            {
+                case E_MoveDirection.Up:
+                    bodies[0].pos.y--;
+                    break;
+                case E_MoveDirection.Down:
+                    bodies[0].pos.y++;
+                    break;
+                case E_MoveDirection.Left:
+                    bodies[0].pos.x -= 2;
+                    break;
+                case E_MoveDirection.Right:
+                    bodies[0].pos.x += 2;
+                    break;
+            }
+        }
+        #endregion
+
+        #region Lesson8
+        public void ChangeDirection(E_MoveDirection newDirection)
+        {
+            //不能直接掉头
+            if ( newDirection == moveDirection || 
+                nowNum > 1 && (moveDirection == E_MoveDirection.Right && newDirection == E_MoveDirection.Left ) ||
+                nowNum > 1 && (moveDirection == E_MoveDirection.Left && newDirection == E_MoveDirection.Right) ||
+                nowNum > 1 && (moveDirection == E_MoveDirection.Up && newDirection == E_MoveDirection.Down) ||
+                nowNum > 1 && (moveDirection == E_MoveDirection.Down && newDirection == E_MoveDirection.Up) )
+            {
+                return;
+            }
+            moveDirection = newDirection;
+        }
+        #endregion
+
+        #region Lesson9
+        //碰撞检测
+        public bool CheckEnd(Map map)
+        {
+            //是否和墙体位置重合
+            for(int i = 0; i < map.walls.Length; i++)
+            {
+                if (bodies[0].pos == map.walls[i].pos)
+                {
+                    return true;
+                }
+            }
+            //是否和自己身体位置重合
+            for(int i = 1; i < nowNum; i++)
+            {
+                if (bodies[0].pos == bodies[i].pos)
+                {
+                    return true;
+                }
+            }
+            return false;
+        }
+        #endregion
+
+        #region Lesson10    
+        public bool CheckSamePos(Position p)
+        {
+            for(int i = 0; i < nowNum; i++)
+            {
+                if (bodies[i].pos == p)
+                {
+                    return true;
+                }
+            }
+            return false;
+        }
+        public void CheckEat(Food food)
+        {
+            if (bodies[0].pos == food.pos)
+            {
+                //吃到了就再次随机生成食物，并且让蛇变长
+                food.RandomPos(this);
+                GrowUp();
+            }
+        }
+        #endregion
+
+        #region Lesson11
+        private void GrowUp()
+        {
+            SnakeBody lastBody = bodies[nowNum - 1];
+            bodies[nowNum] = new SnakeBody(lastBody.pos.x, lastBody.pos.y, E_BodyType.Body);
+            nowNum++;
+        }
+        #endregion
+    }
+}