贪吃蛇的一个诡异问题。。。。
#include <graphics.h> #include <stdlib.h>
#include <dos.h>
#include<bios.h>
#define N 200
#define LEFT 0x4b00
#define RIGHT 0x4d00
#define DOWN 0x5000
#define UP 0x4800
#define ESC 0x011b
int i,key;
int score=0;/*得分*/
int gamespeed=50000/*游戏速度*/
struct Food 这句有问题，报错说declaration syntax error! 实在不明白这有什么问题？(tc编译)
{
int x;
int y;
int yes;
}food;
struct Snake
{
int x[N];
int y[N];
int node;
int direction;
int life;
}snake;
void Init(void);/*图形驱动*/
void Close(void);
void Drawk(void);/*开始画面*/
void GameOver(void);
void GamePlay(void);
void PreScore(void);/*输出分数*/
void main()
{
void Init();
void Drawk();
void GamePlay();
void Close();
}
void Init()
{
int gd=DETECT,gm;
registerbgidriver(EGAVGA_driver);
initgraph(&gd,&gm,"d:\\program files\\WINYES\\TC20H");
cleardevice();
}
void Drawk()
{
setcolor(11);
setlinestyle(SOLID_LINE,0,THICK_WIDTH);
for(i=50;i<=600;i+=10)
{
rectangle(i,40,i+10,49);
rectangle(i,451,i+10,460);
}
for(i=40;i<=450;i+=10)
{
rectangle(50,i,59,i+10);
rectangle(601,i,610,i+10);
}
}
void GamePlay()
{
randomize();/*随机数生成器*/
food.yes=1;/*需要食物为1*/
snake.life=0;/*活着为0*/
snake.direction=1;/*蛇头方向*/
snake.x[0]=100;snake.y[0]=110;/*蛇头坐标*/
snake.x[1]=110;snake.y[1]=100;
snake.node=2;
PreScore();/*得分*/
while(1)/*游戏开始，可以重复游戏直到按ESC*/
{
while(!kbhit())
{
if(food.yes==1)
{
food.x=rank()%400+60;
food.y=rank()%350+60;
while(food.x%10!=0)
food.x++;
while(food.y%10!=0)
food.y++;
food.yes=0;
}/*if=1*/
if(food.yes==0)
{
setcolor(GREEN);
rectangle(food.x,food.y,food.x+10,food.y+10);
}/*if=0*/
for(i=snake.node-1;i>0;i--)
{
snake.x[i]=snake.x[i-1];
snake.y[i]=snake.y[i-1];
}/*for important algorithm*/
switch(snake.direction)
{
case 1:snake.x[0]+=10;break;
case 2:snake.x[0]-=10;break;
case 3:snake.y[0]+=10;break;
case 4:snake.y[0]-=10;break;
}/*表示方向:1向左，2向右，3向上，4向下*/
for(i=3;i<snake.node;i++)/*第四节开始判断首尾相撞*/
{
if(snake.x[i]==snake.x[0] && snake.y[i]==snake.y[0])
{
GameOver();
snake.life=1;
break;
}
}
if(snake.x[0]<55||snake.x[0]>595||snake.y[0]<55|| snake.y[0]>455)/*蛇撞上墙壁即死*/
{
GameOver();
snake.life=1;
break;
}
if(snake.x[0]==food.x && snake.y[0]==food.y)/*吃到食物后*/
{
setcolor(0);
rectangle(food.x,food.y,food.x+10,food.y-10);
snake.x[snake.node]=-20;snake.y[snake.node]=-20;
snake.node++;
food.yes=1;
score+=10;
PreScore();
}
setcolor(4);/*画出蛇*/
for(i=0;i<snake.node;i++)
rectangle(snake.x[i],snake.y[i],snake.x[i]+10,snake.y[i]-10);
delay(gamespeed);
setcolor(0);
rectangle(snake.x[snake.node-1],snake.y[snake.node-1], snake.x[snake.node-1]+10,snake.y[snake.node-1]-10);
}/*while(!kb())*/
key=bioskey(0);/*接收一个键*/
if(key==ESC)
break;
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;
}/*while(1)*/
}/*gameplay*/
void GameOver()
{
cleardevice();
PreScore();
setcolor(RED);
settextstyle(0,0,4);
outtextxy(200,200,"GAME OVER");
getch();
}
void PreScore()
{
char str[10];
setfillstyle(SOLID_FILL,YELLOW);
bar(50,15,220,35);
setcolor(6);
settextstyle(0,0,2);
sprintf(str,"score:%d",score);
outtextxy(55,20,str);
}
void Close(void)
{
getch();
closegraph();
}
