C语言小游戏源代码《贪吃蛇》

#define N 200/*定义全局常量*/ 

#define m 25 

#include

#include

#include

#include

#define LEFT 0x4b00 

#define RIGHT 0x4d00 

#define DOWN 0x5000 

#define UP 0x4800 

#define Esc 0x011b 

int i,j,key,k; 

struct Food/*构造食物结构体*/ 

{ 

int x; 

int y; 

int yes; 

}food; 

struct Goods/*构造宝贝结构体*/ 

{ 

int x; 

int y; 

int yes; 

}goods; 

struct Block/*构造障碍物结构体*/ 

{ 

int x[m]; 

int y[m]; 

int yes; 

}block; 

struct Snake{/*构造蛇结构体*/ 

int x[N]; 

int y[N]; 

int node; 

int direction; 

int life; 

}snake; 

struct Game/*构建游戏级别参数体*/ 

{ 

int score; 

int level; 

int speed; 

}game; 

/*定义函数*/ 

void init(void);/*定义图形驱动*/ 

void close(void);/*定义关闭函数*/ 

void drawk(void);/*定义界面函数*/ 

void gameover(void);/*定义游戏结束函数*/ 

void gameplay(void);/*定义游戏主函数*/ 

void prscore(void);/*定义得分函数*/ 

void main(void){/*主函数体，调用以下四个函数*/ 

init(); 

setbkcolor(7); 

drawk(); 

gameplay(); 

close(); 

} 

void init(void){/*构建图形驱动函数*/ 

int gd=DETECT,gm; 

initgraph(&gd,&gm,""); 

cleardevice(); 

} 

void drawk(void){/*构建游戏界面函数*/ 

/*setbkcolor(LIGHTGREEN);*/ 

char str3[50]; 

setfillstyle(SOLID_FILL,BLUE);/*条型边框,显示版本信息*/ 

bar3d(48,9,610,38,1,45); 

setcolor(YELLOW);/*版本信息*/ 

sprintf(str3,"Version:5.01,Powerwing Studio"); 

outtextxy(330,20,str3); 

setfillstyle(LTSLASH_FILL,YELLOW);/*设定墙边的填充形式*/ 

bar3d(48,48,58,462,0,0);/*设定墙边*/ 

bar3d(48,39,611,48,0,0); 

bar3d(48,452,611,462,0,0); 

bar3d(602,39,611,462,0,0); 

} 

void gameplay(void){/*构建游戏主函数*/ 

/*初始化游戏角色*/ 

randomize();/*随机数发生器*/ 

goods.yes=1; 

block.yes=1; 

food.yes=1;/*场景中需建立新的食物*/ 

snake.life=1;/*初始化蛇生命值*/ 

snake.direction=1;/*蛇起始的移动方向定义为向右*/ 

snake.x[0]=100;snake.y[0]=100;/*蛇头的位置坐标初始化*/ 

snake.x[1]=110;snake.y[1]=100; 

snake.node=2;/*蛇初始化节数，共两节只有蛇头*/ 

/*初始化障碍物的数组*/ 

block.x[0]=170;block.y[0]=270;/*level 1*/ 

block.x[1]=410;block.y[1]=310; 

block.x[2]=300;block.y[2]=200; 

block.x[3]=320;block.y[3]=420; 

block.x[4]=250;block.y[4]=350; 

block.x[5]=220;block.y[5]=320;/*level 2*/ 

block.x[6]=310;block.y[6]=410; 

block.x[7]=400;block.y[7]=500; 

block.x[8]=230;block.y[8]=230; 

block.x[9]=280;block.y[9]=280; 

block.x[10]=170;block.y[10]=280;/*level 3*/ 

block.x[11]=420;block.y[11]=310; 

block.x[12]=310;block.y[12]=200; 

block.x[13]=320;block.y[13]=400; 

block.x[14]=250;block.y[14]=260;/*level 4*/ 

block.x[15]=220;block.y[15]=330; 

block.x[16]=130;block.y[16]=410; 

block.x[17]=310;block.y[17]=510; 

block.x[18]=230;block.y[18]=340; 

block.x[19]=280;block.y[19]=380; 

block.x[20]=270;block.y[20]=170;/*level 5*/ 

block.x[21]=410;block.y[21]=450; 

block.x[22]=190;block.y[22]=200; 

block.x[23]=150;block.y[23]=320; 

block.x[24]=270;block.y[24]=350; 

block.x[25]=340;block.y[25]=320; 

game.score=0; 

game.speed=50000; 

game.level=1; 

prscore();/*得分初始化*/ 

while(1){/*判断为真可以按Esc退出循环结束游戏*/ 

while(!kbhit()){/*无按键按下时，蛇自己移动身体*/ 

if(game.level==1){/*画出障碍物*/ 

for(j=0;j<5;j++){

setcolor(5);/**/ 

rectangle(block.x[j],block.y[j],block.x[j]+10,block.y[j]-10); 

block.yes=0; 

} 

} 

if(game.level==2){/*画出障碍物*/ 

for(j=0;j<9;j++){

setcolor(5);/**/ 

rectangle(block.x[j],block.y[j],block.x[j]+10,block.y[j]-10); 

block.yes=0; 

} 

} 

if(game.level==3){/*画出障碍物*/ 

for(j=0;j<14;j++){

setcolor(5);/**/ 

rectangle(block.x[j],block.y[j],block.x[j]+10,block.y[j]-10); 

block.yes=0; 

} 

} 

if(game.level==4){/*画出障碍物*/ 

for(j=0;j<19;j++){

setcolor(5);/**/ 

rectangle(block.x[j],block.y[j],block.x[j]+10,block.y[j]-10); 

block.yes=0; 

} 

} 

if(game.level==5){/*画出障碍物*/ 

for(j=0;j<25;j++){

setcolor(5);/**/ 

rectangle(block.x[j],block.y[j],block.x[j]+10,block.y[j]-10); 

block.yes=0; 

} 

} 

if(food.yes==1){/*需要画出新的食物*/ 

food.x=rand()%400+60;/*获得间隔60的随机数食物坐标值*/ 

food.y=rand()%350+60; 

while(food.x%10!=0)/*判断坐标值是否满足被10整除，否，自动增加*/ 

food.x++; 

while(food.y%10!=0) 

food.y++; 

food.yes=0;/*新的食物已经产生*/ 

} 

if(goods.yes==1){/*需要画出新的宝物*/ 

goods.x=rand()%380+60;/*获得间隔60的随机数宝贝坐标值*/ 

goods.y=rand()%320+80; 

while(goods.x%10!=0)/*判断坐标值是否满足被10整除，否，自动增加*/ 

goods.x++; 

while(goods.y%10!=0) 

goods.y++; 

goods.yes=0;/*新的宝贝已经产生*/ 

} 

if(goods.yes==0){/*新宝贝产生，应显示出来*/ 

setcolor(0);/*擦除*/ 

rectangle(goods.x,goods.y,goods.x+10,goods.y-10); 

delay(50);/*延时*/ 

setcolor(YELLOW); 

goods.x=goods.x+random(10)-random(20);/*随机数增量*/ 

goods.y=goods.y+random(10)-random(20); 

while(goods.x%10!=0)/*判断变化后的坐标值是否满足被10整除，否，自动增加*/ 

goods.x++; 

while(goods.y%10!=0) 

goods.y++; 

rectangle(goods.x,goods.y,goods.x+10,goods.y-10);/*重画出宝贝*/ 

if(goods.x<65||goods.x>585||goods.y<65|goods.y>445){/*判定宝贝是否越界*/

setcolor(0);/*擦除越界的宝贝*/ 

rectangle(goods.x,goods.y,goods.x+10,goods.y-10); 

goods.yes=1;/*越界后重新生成宝贝*/ 

} 

} 

if(food.yes==0){/*新食物产生，应显示出来*/ 

setcolor(GREEN); 

setlinestyle(SOLID_LINE,0,THICK_WIDTH);/*设定当前线型*/ 

rectangle(food.x,food.y,food.x+10,food.y-10); 

} 

for(i=snake.node-1;i>0;i--){/*取得需重画的蛇的节数*/

snake.x[i]=snake.x[i-1];/*最后一节的坐标值等于倒数第二节的坐标值*/ 

snake.y[i]=snake.y[i-1]; 

} 

switch(snake.direction){/*判断蛇头的移动方向*/ 

case 1:snake.x[0]+=10;break;/*向右*/ 

case 2:snake.x[0]-=10;break;/*向左*/ 

case 3:snake.y[0]-=10;break;/*向上*/ 

case 4:snake.y[0]+=10;break;/*向下*/ 

} 

for(i=3;iif(snake.x[i]==snake.x[0]&&snake.y[i]==snake.y[0]){/*即自身的任一节坐标值与蛇头坐标相等*/ 

for(i=1;isetcolor(0); 

rectangle(snake.x[i],snake.y[i],snake.x[i]+10,snake.y[i]-10); 

rectangle(snake.x[snake.node-1],snake.y[snake.node-1], 

snake.x[snake.node-1]+10,snake.y[snake.node-1]-10); 

} 

snake.life-=1;/*生命值减少一*/ 

snake.node-=5; 

prscore();/*输出结果*/ 

if(snake.life==0){/*判断生命值是否为0*/ 

gameover();/*游戏结束*/ 

break;/*退出内循环*/ 

} 

} 

} 

if(snake.x[0]<55||snake.x[0]>595||snake.y[0]<55||snake.y[0]>455){/*判断蛇是否与墙体碰撞*/

for(i=1;isetcolor(0); 

rectangle(snake.x[i],snake.y[i],snake.x[i]+10,snake.y[i]-10); 

rectangle(snake.x[snake.node-1],snake.y[snake.node-1], 

snake.x[snake.node-1]+10,snake.y[snake.node-1]-10); 

} 

snake.x[0]=100;snake.y[0]=100;/*蛇头的位置坐标重新初始化*/ 

snake.x[1]=110;snake.y[1]=100; 

snake.direction=1;/*蛇起始的移动方向定义为向右*/ 

snake.life-=1;/*生命值减少一*/ 

snake.node-=5;/*相应节数减少5节*/ 

prscore(); 

if(snake.life==0){ 

gameover(); 

break; 

} 

} 

/*判断蛇与障碍物碰撞，食物是否与障碍物重叠*/ 

if(game.level==1){/*判断级别，并设定相应的障碍物数量，即数组个数*/ 

k=5; 

} 

else if(game.level==2){ 

k=9; 

} 

else if(game.level==3){ 

k=14; 

} 

else if(game.level==4){ 

k=19; 

} 

else if(game.level==5){ 

k=25; 

} 

for(j=0;jif(snake.x[0]==block.x[j]&&snake.y[0]==block.y[j]){ 

for(i=1;isetcolor(0); 

rectangle(snake.x[i],snake.y[i],snake.x[i]+10,snake.y[i]-10); 

rectangle(snake.x[snake.node-1],snake.y[snake.node-1], 

snake.x[snake.node-1]+10,snake.y[snake.node-1]-10); 

} 

if(food.x==block.x[j]&&block.y[j]==food.y){/*防止障碍物与食物重叠*/ 

setcolor(0);/*设定食物的颜色为背景色，即擦除*/ 

rectangle(food.x,food.y,food.x+10,food.y-10); 

food.yes=1;/*食物重新生成*/ 

} 

snake.x[0]=100;snake.y[0]=100;/*蛇头的位置坐标重新初始化*/ 

snake.x[1]=110;snake.y[1]=100; 

snake.direction=1;/*蛇起始的移动方向定义为向右*/ 

snake.life-=1; 

snake.node-=5; 

prscore(); 

if(snake.life==0){ 

gameover(); 

break; 

} 

} 

} 

if(snake.x[0]==food.x&&snake.y[0]==food.y){/*判断蛇是否吃到食物*/ 

setcolor(0);/*设定食物的颜色为背景色，即擦除*/ 

rectangle(food.x,food.y,food.x+10,food.y-10); 

snake.x[snake.node]=-20;/*新的一节放在不可见的位置*/ 

snake.y[snake.node]=-20; 

snake.node++;/*蛇身增加一节*/ 

if(snake.node>2){/*当节数每增加5节生命值增加一*/

snake.life=1+fabs((snake.node-2)/5); 

} 

food.yes=1;/*场景需要增加食物*/ 

game.score+=20;/*加分*/ 

prscore();/*输出得分*/ 

} 

if(snake.x[0]==goods.x&&snake.y[0]==goods.y){/*判定蛇是否得到宝贝*/ 

setcolor(0);/*设定宝贝的颜色为背景色，即擦除*/ 

rectangle(goods.x,goods.y,goods.x+10,goods.y-10); 

goods.yes=1;/*场景需要增加新的宝贝*/ 

game.score+=100;/*得到宝贝后加100分*/ 

prscore();/*输出得分*/ 

} 

if(game.score<500){/*设定游戏速度和难度级别*/

game.speed=50000; 

game.level=1;} 

else if(game.score>=500&&game.score<1000){

game.level=2; 

game.speed=40000;} 

else if(game.score>=1000&&game.score<1500){

game.level=3; 

game.speed=30000;} 

else if(game.score>=1500&&game.score<2000){

game.level=4; 

game.speed=20000; } 

else if(game.score>=5000){

game.level=5; 

game.speed=10000;} 

setcolor(4);/*画出移动的蛇*/ 

setlinestyle(SOLID_LINE,0,THICK_WIDTH);/*设定当前线型*/ 

for(i=0;irectangle(snake.x[i],snake.y[i],snake.x[i]+10,snake.y[i]-10); 

delay(game.speed); 

setcolor(0);/*用背景色擦去最后一节*/ 

rectangle(snake.x[snake.node-1],snake.y[snake.node-1], 

snake.x[snake.node-1]+10,snake.y[snake.node-1]-10); 

} /*endwhile(! kbhit) */ 

if(snake.life==0)/*判断循环结束条件：蛇死或者检测到Esc按键*/ 

break; 

key=bioskey(0);/*判断按键*/ 

if(key==Esc) 

break; 

/*判断蛇头接收到的用户按键响应的移动方向*/ 

else if(key==UP&&snake.direction!=4) 

snake.direction=3; 

else if(key==RIGHT&&snake.direction!=2) 

snake.direction=1; 

else if(key==LEFT&&snake.direction!=1) 

snake.direction=2; 

else if(key==DOWN&&snake.direction!=3) 

snake.direction=4; 

}/*endwhile(1)*/ 

} 

void gameover(void){/*游戏结束处理*/ 

cleardevice();/*清屏*/ 

prscore();/*输出得分*/ 

setcolor(RED);/*打印出“Game Over”字样*/ 

settextstyle(0,0,4); 

outtextxy(200,200,"Game Over!"); 

getch(); 

} 

void prscore(void){/*定义分数输出函数*/ 

char str1[10]; 

char str2[10]; 

char str4[20]; 

setfillstyle(SOLID_FILL,BLUE);/*用于清除旧的显示信息*/ 

bar(49,10,320,37); 

setcolor(WHITE); 

settextstyle(0,0,1); 

sprintf(str1,"score:%d",game.score);/*输出得分*/ 

outtextxy(55,20,str1); 

sprintf(str2,"level:%d",game.level);/*输出级别*/ 

outtextxy(250,20,str2); 

sprintf(str4,"life:%d",snake.life);/*输出级别*/ 

outtextxy(150,20,str4); 

} 

void close(void){/*定义关闭函数，退出图形模式*/ 

getch(); 

closegraph(); 

}