p2.c

linux下的测试反应能力的小游戏,用才语言编写

#include <SDL.h>
#include <stdlib.h>
#include <stdio.h>
#include <string.h>
#include <time.h>
#include "SDL_draw.h"                        /*把SDL_draw库的头文件包含进来*/

#define SCREEN_W 640
#define SCREEN_H 480
#define TEST_NUM 10
#define OUT_TIME 5.0
#define DELAY_TIME 500

Uint32 RED,YELLOW,BLUE,GREEN,WHITE,BLACK;
Uint8 *keys;
int color,x,y,rec_w,rec_h,i;
SDL_Surface *screen;	       /*屏幕指针*/
SDL_Event event;	         //SDL事件  
double t[TEST_NUM];                     

void inti_graph();
void define_color();
void init();
void rand_data();
void draw_rec();
void output(double t[TEST_NUM]);

int main()
{  
	init();
        
	for(i=0;i<TEST_NUM;i++){
      int flag=0;
      struct timeval tv1,tv2;
		
		draw_rec();
   	gettimeofday(&tv1,NULL);
      while(flag==0)
				while ( SDL_PollEvent(&event) ) {             //循环接受键盘事件，直到退出
		      		keys = SDL_GetKeyState(NULL);                 //得到键盘键的状态  
                  if(keys[SDLK_ESCAPE])
                    exit(0);
                  else if(keys[SDLK_SPACE])
                          goto next;
						else
		     		 		 switch(color){
				       			 case 1: if(keys['r']){
                             			 gettimeofday(&tv2,NULL);
                             			 flag=1;
                                                                     		     		   }
                	        		  		 break;
				       			 case 2: if(keys['y']){
                             			 gettimeofday(&tv2,NULL);
                             			 flag=1;
                                                                     		     		   }
                	        		  		 break;
				       			 case 3: if(keys['b']){
                             			 gettimeofday(&tv2,NULL);
                             			 flag=1;
                                                                     		     		   }
                	        		  		 break;
				       			 case 4: if(keys['g']){
                             			 gettimeofday(&tv2,NULL);
                             			 flag=1;
                                                                     		     		   }
                	        		  		 break;
				       			 case 5: if(keys['w']){
                             			 gettimeofday(&tv2,NULL);
                             			 flag=1;
                                                                     		     		   }
                	        		  		 break;
                        	 default: break;
		                                	   } 
                              	  }
      SDL_Delay(DELAY_TIME);
	   t[i]=(tv2.tv_sec-tv1.tv_sec)+(tv2.tv_usec-tv1.tv_usec)/1000000.0;
		next : ;
		Draw_FillRect(screen,x,y,rec_w,rec_h,BLACK);
      
	}
	output(t);	
}

void inti_graph()
{
    if ( SDL_Init( SDL_INIT_VIDEO) < 0 ) {	/*初始化视频子系统*/
        fprintf(stderr, "无法初始化SDL: %s\n", SDL_GetError());
        exit(1);
           }
           /*设置视频模式*/
    screen = SDL_SetVideoMode(SCREEN_W, SCREEN_H, 16, SDL_SWSURFACE);  
    if ( screen == NULL ) {
        fprintf(stderr, "无法设置640x480x16位色的视频模式：%s\n", SDL_GetError());
        exit(1);
           }
    atexit(SDL_Quit);	/*退出*/	
}

void define_color()
{
	RED=SDL_MapRGB(screen->format, 255,0,0);
	YELLOW=SDL_MapRGB(screen->format, 255,255,0);
	BLUE=SDL_MapRGB(screen->format, 0,0,255);
   GREEN=SDL_MapRGB(screen->format, 0,255,0);
   WHITE=SDL_MapRGB(screen->format, 255,255,255);
   BLACK=SDL_MapRGB(screen->format,0,0,0);
}

void init()
{	
	inti_graph();
	define_color();
	srand((int)time(0));
   
	for(i=0;i<TEST_NUM;i++)
		t[i]=OUT_TIME;        	
}

void rand_data()
{
	color=1+(int)(5.0*rand()/(RAND_MAX+1.0));
   x=(int)(540.0*rand()/(RAND_MAX+1.0));
	y=(int)(400.0*rand()/(RAND_MAX+1.0));
	rec_w=30+(int)(80.0*rand()/(RAND_MAX+1.0));
	rec_h=30+(int)(80.0*rand()/(RAND_MAX+1.0));
}

void draw_rec()
{
	rand_data();
	switch(color){
			case 1:Draw_FillRect(screen,x,y,rec_w,rec_h,RED);
                break;
			case 2:Draw_FillRect(screen,x,y,rec_w,rec_h,YELLOW);
                break;
			case 3:Draw_FillRect(screen,x,y,rec_w,rec_h,BLUE);
                break;
			case 4:Draw_FillRect(screen,x,y,rec_w,rec_h,GREEN);
                break;
			case 5:Draw_FillRect(screen,x,y,rec_w,rec_h,WHITE);
                break;
	}
   SDL_UpdateRect(screen,0,0,0,0);      
}

void output(double t[TEST_NUM])
{
	double sum=0;
        
	printf("\n**************************************************************************");
	printf("\nYour responce times for each single test are :\n");
   for(i=0;i<TEST_NUM;i++){
       printf("%lf  ",t[i]);
		 sum=sum+t[i];
        }
 	printf("\nThe total time you take is: %lf seconds",sum);
 	printf("\nThe average time you take is: %lf seconds\n",sum/TEST_NUM);
	
   if(sum/TEST_NUM<1.0)
              printf("You are great! Congratulations!!!");
	else
       printf("Don`t lose heart,try again!!!");
       printf("\n***************************************************************************\n");
}