This weekend, I had nothing to do and saw the problems of netizens, and I needed a C language version of Snake. So I sat down and wrote a C language console version, and the development software used Vsual Studio 2019. There is only one tanchishe.c file in the entire program, compiled to generate tanchishe.exe, and then directly opened in the Windows environment to enter the game.
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The running effect is shown in the first animation.
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1. Introduce some required header files, define some constants, global variables, structures, etc.
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2. Write basic operation functions
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3. Writing the print information function and main function.
Because the line spacing and word spacing are inconsistent by default in the console character interface, the crawling between lines seems to be faster than the speed between characters, but the stepping speed is actually the same.
//author: Hengda
//date: 2020年4月19日
//版权所有，CSDN：https://blog.csdn.net/one312
#include <stdio.h>//引入所需头文件
#include <string.h>//字符串
#include <malloc.h>
#include <stdlib.h>
#include <conio.h>
#include <math.h>
#define SPAN_WIDTH 48 //蛇可运动区域宽度
#define SPAN_HEIGHT 32 //蛇可运动区域高度
#define GAME_WIDTH SPAN_WIDTH+2+1 //画面宽度（+2是两边围墙 +1是行尾换行符）
#define GAME_HEIGHT SPAN_HEIGHT+2 //画面高度（+2是上下围墙）
#define SPEED_LEVEL_DIFF_SPEED 100 //速度等级之间的的速度差
typedef struct body_node{
int x; int y; struct body_node *next;} BODY_NODE;
char spanArr[GAME_HEIGHT][GAME_WIDTH] = {
' '};// 存储整个画面
BODY_NODE* snakeP = NULL,apple = {
0,0,NULL };//蛇头指针，苹果
char appleImage = 'O',snakeImage = '@',emptyImage=' ', direction = 'r';//苹果图标，蛇图标，空区域图标，默认运动方向（l r u d）
unsigned int score = 0;
char info[9][60] = {
"GAME OVER !!!",
"得分：%d ",
"《贪吃蛇游戏》",
"C语言控制台字符界面版",
"作者：Hengda",
"日期：2020/04/19",
"版权所有",
"1.按Enter键继续游戏",
"2.按其他键退出"
};
void setSpanCharByXY(int x, int y, char c) {
spanArr[y + 1][x + 1] = c; }//+1原因是有边框
char getSpanCharByXY(int x, int y) {
return spanArr[y + 1][x + 1]; }//+1原因是有边框
void init_sanke(){
//生成蛇
snakeP = (BODY_NODE*)malloc(sizeof(BODY_NODE));//初始蛇头位置
snakeP->x = SPAN_WIDTH / 2;
snakeP->y = SPAN_HEIGHT / 2;
snakeP->next = NULL;
setSpanCharByXY(snakeP->x, snakeP->y, snakeImage);
}
void free_snake() {
//释放蛇所占内存
BODY_NODE* P=snakeP,*Q = NULL;
while (P->next != NULL) {
Q = P;
P = P->next;
free(Q);
Q = NULL;
}
free(P);
P = NULL;
}
void init_apple() {
//生成随机且不与蛇重叠的Apple
apple.x = -1;
apple.y = -1;
while (apple.x < 0 || apple.y < 0 || getSpanCharByXY(apple.x, apple.y) == '#') {
apple.x = rand()% SPAN_WIDTH;
apple.y = rand()% SPAN_HEIGHT;
}
setSpanCharByXY(apple.x, apple.y, appleImage);
}
void eateAppleOrAddHead(int appleX, int appleY) {
//吃苹果
BODY_NODE* node = (BODY_NODE*)malloc(sizeof(BODY_NODE));
node->x = appleX;
node->y = appleY;
node->next = snakeP;
snakeP = node;
setSpanCharByXY(appleX, appleY, snakeImage);//碰到苹果，则把苹果变成自己的身体
}
void popTail() {
//去尾
BODY_NODE * P=snakeP;
if (P == NULL || P->next == NULL) return;//蛇不存在或者蛇只有一节，不做删尾操作
while(P->next->next != NULL) {
P = P->next;};
setSpanCharByXY(P->next->x, P->next->y, emptyImage);
free(P->next);
P->next = NULL;
}
int snake_Step(int nextX, int nextY) {
//蛇移动一步
//碰到自己的身体，或者越界则gameover //nextX >= SPAN_WIDTH || nextY >= SPAN_HEIGHT || nextX < 0 || nextY < 0 ||
if (getSpanCharByXY(nextX, nextY) == snakeImage) return 0;
else if (getSpanCharByXY(nextX, nextY) == appleImage) {
eateAppleOrAddHead(nextX, nextY);
score++;
init_apple();//生成新苹果
}else {
eateAppleOrAddHead(nextX, nextY);
popTail();
}
return 1;
}
int snake_Move_By_Drection(char direction) {
//蛇朝指定方向移动
if (direction == 'l') return snake_Step(snakeP->x - 1, snakeP->y);
else if (direction == 'u') return snake_Step(snakeP->x, snakeP->y - 1);
else if (direction == 'r') return snake_Step(snakeP->x + 1, snakeP->y);
else if(direction == 'd') return snake_Step(snakeP->x, snakeP->y + 1);
return 0;
}
char get_direction() {
//获取方向 UP(向上方向键)为: 0X4800 DOWN(向下方向键)为 : 0X5000 LEFT(向左方向键)为 : 0X4b00 RIGHT(向右方向键)为 : 0X4d00
if ( kbhit() && getch()) {
switch (getch()) {
case 0x4b: if(direction != 'r') direction = 'l'; break;
case 0x48: if (direction != 'd') direction = 'u'; break;
case 0x4d: if (direction != 'l') direction = 'r'; break;
case 0x50: if (direction != 'u')direction = 'd'; break;
}
}
return direction;
}
void display(){
//更新画面
system("cls");//mac 用这个 system("clear");
spanArr[GAME_HEIGHT -1][GAME_WIDTH -1] = '\0';
printf("%s", spanArr);//打印画面
}
void int_span(){
// 清盘
for (int j = 0; j < GAME_HEIGHT; j++)
for (int i = 0; i < GAME_WIDTH; i++)
if (i == 0 || (j == 0 && i != GAME_WIDTH - 1) || i == GAME_WIDTH - 2 || j == GAME_HEIGHT - 1) {
spanArr[j][i] = snakeImage; }
else if (i == GAME_WIDTH - 1) {
spanArr[j][i] = '\n'; }
else {
spanArr[j][i] = emptyImage; }
}
void display_Info() {
//打印信息
int gameWidth = GAME_WIDTH;
int gameHeight = GAME_HEIGHT;
int infoNum = 0;
char str[60] = "";
infoNum = (sizeof(info)/ 60)/sizeof(char);
for (int i = 0; i < infoNum;i++) {
if (i == 1) sprintf(str,info[i],score);
else strcpy(str, info[i]);
memcpy(spanArr[gameHeight / 2 - infoNum + i*2] + gameWidth / 2 - strlen(str) / 2, str, strlen(str));
}
}
int main(int argc, char* argv[]) {
//主函数
char info[10] = "";
int gameWidth = GAME_WIDTH;
int gameHeight = GAME_HEIGHT;
while (1) {
score = 0;
int_span();
init_sanke();
init_apple();
while (1) {
display();//刷新棋盘
if (!snake_Move_By_Drection(get_direction())) {
//读取运动方向 并控制移动一步
free_snake();
display_Info();
score = 0;
display();//刷新有些画面
if (getchar() == '\n') break;//等待按键
else return 0;
}
}
}
return 0;
}
Download address of the project source program: https://github.com/hengda-git/c-tanchishe