#include <turboc.h>
#define SMAX 12
#define BMAX 64

struct node{
 int x;
 int y;
 int direct;
 int flag;
 int speed;
 int speedTmp;
 char * shape;
};

struct bal{
 int x;
 int y;
 int flag;
 int life;
};

void printship(struct node tmp, int flag){
 int j;
 gotoxy(tmp.x,tmp.y);
 if(flag){
  puts(tmp.shape);
 }else{
  for(j=0;j<strlen(tmp.shape);j++){
   putchar(\' \');
  }
 }
}
void printball(struct bal tmp, int flag){
 gotoxy(tmp.x,tmp.y);
 if(flag){
  putchar(\'*\');
 }else{
  putchar(\' \');
 }
}
void printshot(struct bal tmp, int flag){
 gotoxy(tmp.x,tmp.y);
 if(flag){
  putchar(\'!\');
 }else{
  putchar(\' \');
 }
}
void printavatar(int x,int y, char * avatar,int flag){
 int j;
 gotoxy(x,y);
 if(flag){
  puts(avatar);
 }else{
  for(j=0;j<strlen(avatar);j++){
   putchar(\' \');
  }
 }
}

int main(void){
 char *enemy[5] = {"~m<..>m~","(--0--)","m<..>m","<==T==>","<@@.@@>"};
 char *avatar = "(--I--)";
 struct node ship[SMAX];
 struct bal ball[BMAX];
 struct bal shoot;
 int i,j;
 int shipCnt, ballCnt;
 int x,y;
 int cnt,score;
 int n,m;
 char key;

 for(i=0;i<SMAX;i++){
  ship[i].y = i;
  ship[i].flag = 0;
 }

 for(i=0;i<BMAX;i++){
  ball[i].flag = 0;
 }

 shipCnt = ballCnt = 0;
 x = 0;
 y = 20;
 shoot.flag = 0;

 cnt = score = 0;
 printavatar(x,y,avatar,1);
 gotoxy(40,21);
 printf("Score : %d",score);
 m = 2;
 j = 1;
 while(1){
  Sleep(10);
  //적 기체 출현!!
  m = 2 + score / 100;

  if(j && score == 100){
   j = 0;
   system("color a");
  }
  
  for(i=0;i<m;i++){
   cnt++;
   if(cnt > 100){
    cnt = 0;
    n = baserand(0,SMAX-1);
    if(ship[n].flag == 0){
     ship[n].flag = 1;

     if(baserand(0,1)){
      ship[n].x = 0;
      ship[n].direct = 1;
     }else{
      ship[n].x = 40;
      ship[n].direct = -1;
     }
     ship[n].speed = ship[n].speedTmp = baserand(2,10+score/20);
     ship[n].shape = enemy[baserand(0,4)];
     printship(ship[n],1);
    }
   }
  }
  
  //키보드 입력

  if(kbhit()){
   key = getch();
   if(key == -32){
    key = getch();
    switch(key){
     case LEFT:
      if(x !=0){
       printavatar(x,y,avatar,0);
       x--;
       printavatar(x,y,avatar,1);
      }
      break;
     case RIGHT:
      if(x != 40){
       printavatar(x,y,avatar,0);
       x++;
       printavatar(x,y,avatar,1);
      }
      break;
    }
   }else if(key == \'q\'){
    gotoxy(0,21);
    printf("프로그램 종료합니다.\\n");
    return 0;
   }else if(key == \' \'){
    if(shoot.flag == 0){
     shoot.flag = 1;
     shoot.x = x+3;
     shoot.y = 19;
     shoot.life = 3;
     printshot(shoot,1);
    }
   }
  }

  //이동 처리
  for(i=0;i<SMAX;i++){
   if(ship[i].flag){
    ship[i].speedTmp--;
    if(ship[i].speedTmp == 0){
     printship(ship[i],0); //삭제
     ship[i].speedTmp = ship[i].speed;
     ship[i].x += ship[i].direct;

     if(ship[i].x == -1 && ship[i].direct == -1){
      ship[i].flag = 0;
     }else if(ship[i].x == 41 && ship[i].direct == 1){
      ship[i].flag = 0;
     }else{
      printship(ship[i],1); //출력
     }

     if(baserand(0,10)==0){
      n = baserand(0,BMAX);

      if(ball[n].flag == 0){
       ball[n].flag = 1;
       ball[n].life = 10; //적 총알 속도
       ball[n].x = ship[i].x+3;
       ball[n].y = ship[i].y+1;
      }
     }
    }

    if((ship[i].x <= shoot.x) && ((strlen(ship[i].shape)+ship[i].x) > shoot.x) && (ship[i].y == shoot.y)){
     ship[i].flag = 0;
     printship(ship[i],0); //삭제
     gotoxy(40,21);
     printf("Score : %d",score);
     score++;
    }
   }
  }

  for(i<0;i<BMAX;i++){
   if(ball[i].flag){
    ball[i].life--;
    if(ball[i].life == 0){
     printball(ball[i],0); //삭제
     ball[i].y++;
     ball[i].life = 10;

     if(ball[i].y == 21){
      ball[i].flag = 0;
     }else{
      printball(ball[i],1); //출력
     }
    }

    if(ball[i].y == y && ball[i].x >= x && ball[i].x <= (strlen(avatar)+x-1)){
     gotoxy(x,y);
     printf("  펑!!   ");
     gotoxy(0,22);
     printf("끝..\\n");
     PAS;
     return 0;
    }
   }
  }

  if(shoot.flag){
   shoot.life--;
   if(shoot.life == 0){
    printshot(shoot,0);
    shoot.y--;
    if(shoot.y == -1){
     shoot.flag = 0;

    }else{
     printshot(shoot,1);
    }
    shoot.life = 1;
   }

  }

 }
 return 0;
}

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