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Editor to share with you how to achieve gluttonous snake play in the c language. I hope you will get something after reading this article. Let's discuss it together.

(1) Design topics

Analyze, understand and modify the code of the gluttonous Snake game obtained online. In order to gradually master the practical application of c language.

Gluttonous Snake is a game we all played when we were young, so this time try to understand it.

(2) overall design

It is probably the result of setting up the background, creating food and snakes, manipulating the snakes through the player's instructions, and finally outputting the game over.

(3) Program analysis and application of main knowledge

# include

# include

# include

# include

# include

Const int H = 8; / / height of the map

Const int L = 16; / / length of the map

Const is a C language (ANSI C) keyword, it defines a variable is not allowed to be changed, resulting in static effect. The use of const can improve the security and reliability of the program to some extent. In addition, when looking at other people's code, a clear understanding of the role of const is also helpful to understand each other's programs. In addition, CONST also appears in other programming languages, such as A +, PHP5, B#.net, HC08 C, C #.

So the map won't change.

Char GameMap [H] [L]; / / Game Map

A two-dimensional array defines the map.

Press int key; / / to save

Int sum = 1, over = 0; / / the length of the snake, the end of the game (eat by yourself or touch the wall)

Int dx [4] = {0,0,-1,1}; / / left, right, top, bottom direction

Use arrays to define directions.

Int dy [4] = {- 1,1,0,0}

The data type of each node of the struct Snake / / snake

{

Int x, y; / / left position

Int now; / / saves the direction of the current node, 0 ~ 1 ~ 2 ~ 3, respectively.

} Snake [hanger]

Create icons for each part.

Const char Shead ='@'; / / Snakehead

Const char Sbody ='#'; / / Snake body

Const char Sfood ='*'; / / Food

Const char Snode ='.'; / /'.' Mark as empty on the map

Void Initial (); / / initialization of the map

Void Create_Food (); / / randomly generate food on the map

Void Show (); / / refresh the display map

Void Button (); / / take out the button and determine the direction

Void Move (); / / Snake movement

Void Check_Border (); / / check whether the snakehead has crossed the line.

Void Check_Head (int x, int y); / / check the position of the snakehead after moving

Int main ()

{

Initial ()

Show ()

Return 0

}

Initialization of void Initial () / / Map

{

Int i, j

Int hx, hy

System ("title gluttonous Snake"); / / title of the console

Memset (GameMap,'.', sizeof (GameMap)); / / initialization maps are all empty'.'

System ("cls")

Srand (time (0)); / / Random seed

Srand ((unsigned) time (NULL)) uses the value of the system timing / counter as a random seed. Each seed corresponds to a group of random numbers generated in advance according to the algorithm, so under the same platform environment, the random numbers generated at different times will be different. Accordingly, if srand (unsigned) time (NULL) is changed to srand (TP) (TP is any constant), the "random numbers" obtained no matter when and how many times to run will be a fixed sequence, so the random numbers generated by srand are pseudo-random numbers.

Positions are randomly generated through sarand.

Hx = rand ()% H; / / generate snakeheads

Hy = rand ()% L

GameMap [hx] [hy] = Shead

Snake [0] .x = hx; Snake [0] .y = hy

Snake [0] .now =-1

Create_Food (); / / randomly produce food

A two-dimensional array represents a map. A For loop is nested with a for loop.

For (I = 0; I)

< H; i++) //地图显示 { for(j = 0; j < L; j++) printf("%c", GameMap[i][j]); printf("\n"); } printf("\n小小C语言贪吃蛇\n"); printf("按任意方向键开始游戏\n"); getch(); //先接受一个按键,使蛇开始往该方向走 Button(); //取出按键,并判断方向 } void Create_Food() //在地图上随机产生食物 { int fx, fy; while(1) { fx = rand()%H; fy = rand()%L; If语句用来针对玩家指令给予输出结果。 if(GameMap[fx][fy] == '.') //不能出现在蛇所占有的位置 { GameMap[fx][fy] = Sfood; break; } } } void Show() //刷新显示地图 { int i, j; While语句也用来判断。 while(1) { _sleep(500); //延迟半秒(1000为1s),即每半秒刷新一次地图 Button(); //先判断按键在移动 Move(); if(over) //自吃或碰墙即游戏结束 { printf("\n**游戏结束**\n"); printf(" >

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