1 class Food
2 {
3 public:
4 Food(){}
5 Food(COORD _cd) : cd(_cd){}
6
7 COORD cd;
8 };
9
10 class SnakeNode
11 {
12 public:
13 SnakeNode() : Prev(0),Next(0)
14 {
15 cd.X = cd.Y = 0;
16 }
17
18 SnakeNode(COORD _cd) : cd(_cd),Prev(0),Next(0){}
19 SnakeNode(int x,int y) : Prev(0),Next(0)
20 {
21 cd.X = x;
22 cd.Y = y;
23 }
24
25 COORD cd;
26 SnakeNode* Prev;
27 SnakeNode* Next;
28 };
29
30 class Snake
31 {
32 public:
33 Snake()
34 {
35 Initialize();
36 }
37
38 ~Snake()
39 {
40 Destroy();
41 }
42
43 void Initialize()
44 {
45 Score = 0;
46 Length = 3;
47 Type = dtLeft;
48 Speed = 1000;
49 Score = 0;
50 SnakeNode* pNode1 = new SnakeNode(GAME_WIDTH / 2,GAME_HEIGHT / 2);
51 SnakeNode* pNode2 = new SnakeNode(pNode1->cd.X + 1,pNode1->cd.Y);
52 SnakeNode* pNode3 = new SnakeNode(pNode1->cd.X + 2,pNode1->cd.Y);
53 pNode1->Next = pNode2;
54 pNode2->Next = pNode3;
55 pNode3->Prev = pNode2;
56 pNode2->Prev = pNode1;
57 Head = pNode1;
58 Tail = pNode3;
59 }
60
61 void Destroy()
62 {
63 SnakeNode* pNode = Head->Next;
64 while(pNode)
65 {
66 SnakeNode* Next = pNode->Next;
67 delete pNode;
68 pNode = Next;
69 }
70 if(Head)
71 {
72 delete Head;
73 Head = Tail = 0;
74 }
75 }
76
77 int Insert(int x,int y)
78 {
79 SnakeNode* pNode = new SnakeNode(x,y);
80 pNode->Next = Head;
81 Head->Prev = pNode;
82 Head = pNode;
83 return ++Length;
84 }
85
86 COORD Pop()
87 {
88 COORD cd = Tail->cd;
89 Tail = Tail->Prev;
90 delete Tail->Next;
91 Tail->Next = 0;
92 return cd;
93 }
94
95 int Length; // 長度,無用
96 DIRECTIONTYPE Type; // 方向
97 SnakeNode* Head; // 蛇頭節點
98 SnakeNode* Tail; // 蛇尾節點
99 int Speed; // 速度
100 Food food; // 食物位置
101 int Score; // 分數
102 };然後我們需要一個函數表示蛇向蛇頭方向移動了一格
1 static void SnakeMove(Snake& sn)
2 {
3 COORD cdNew;
4 switch(sn.Type)
5 {
6 case dtTop:
7 cdNew = sn.Head->cd;
8 cdNew.Y--;
9 break;
10 case dtRight:
11 cdNew = sn.Head->cd;
12 cdNew.X++;
13 break;
14 case dtBottom:
15 cdNew = sn.Head->cd;
16 cdNew.Y++;
17 break;
18 case dtLeft:
19 cdNew = sn.Head->cd;
20 cdNew.X--;
21 break;
22 }
23 if(cdNew.X <
