C Programming Help

[ObiWan]

case 'a':
if (x>5){
erase_ship(x,y);
x -= 7;
draw_ship(x,y);
}
ship(x,y);
break;


case 'd':
if (x<72){
erase_ship(x,y);
x += 7;
draw_ship(x,y);
}
ship(x,y);
break;

[DWk]

Anyways - I think I got all the errors fixed:

The only problem is that I can&#39;t move/shoot while the ship on the left scrolls down.

#include <stdio.h>
#include <conio.h>
#include <stdlib.h>
#include <dos.h>

int x = 37;
int y = 25;
int posex = 5;
int posey = 1;
char b;


void ship (int x, int y);
void shoot (int x, int y);
void menu ();
void salida ();
void centership(int x, int y);
void borrar(int x, int y);
void bala(int x, int y);
void draw_ship(int x, int y);
void erase_ship(int x, int y);
void draw_enemy(int x, int y);
void erase_tail(int x, int y);
void scroll (int x, int y);


void erase_tail(int x, int y){
	delay(200);
	gotoxy(x,y);
	printf("       ");
}

void draw_enemy(int x, int y){
	gotoxy(x,y);
	printf("VvvvvvV");
	gotoxy(x,y+1);
	printf(" VvvvV ");
	gotoxy(x,y+2);
	printf("  VvV  ");
	gotoxy(x,y+3);
	printf("   V   ");

}

void scroll(int x, int y){
	int i = 2;
	while (i<23){
  draw_enemy(x,i);  
  erase_tail(x,i);
  i++;
	}
	

}

void salida(){
	clrscr();
	delay(500);
	printf("Gracias por jugar\n");
	exit(0);
}

void erase_ship(int x, int y){
   gotoxy(x,y);
   printf("       ");
   gotoxy(x,y-1);
   printf("       ");
   gotoxy(x,y-2);
   printf("       ");
   gotoxy(x,y-3);
   printf("       ");
}

void draw_ship(int x, int y){
   gotoxy(x,y);
   printf("*-----*");
   gotoxy(x,y-1);
   printf(" *---* ");
   gotoxy(x,y-2);
   printf("  *-*  ");
   gotoxy(x,y-3);
   printf("   *   ");
}

void borrar_bala(int x, int y){
	int i=21;
	delay(15);
	while (i>0){
  int ejex = x;
  gotoxy(ejex+3,i);
  printf(" ");
  delay (7);
  i--;
	}
	ship(x,y);

}

void bala (int x, int y){
	int i=21;
	while (i>0){
  int ejex = x;
  gotoxy(ejex+3,i);
  printf("|");
  delay (14);
  i--;
	
	}
	borrar_bala(x,y);
	
}


void shoot(int x, int y){
	bala(x,y);
}

void centership(int x, int y){
	clrscr();
	gotoxy(x,y);
	printf("*-----*");
	gotoxy(x,y-1);
	printf(" *---* ");
	gotoxy(x,y-2);
	printf("  *-*  ");
	gotoxy(x,y-3);
	printf("   *   ");
	ship(x,y);
	delay(500);
	scroll(posex,posey);
}

void ship(int x, int y){

	int exit_loop = 0;
	do{
      if(kbhit() == 0){
  	b = getch();
  	switch(b){
  	
    case 'a':
    	if (x>5){
      erase_ship(x,y);
      x -= 7;
      draw_ship(x,y);
    	}
    	break;
      	
    case 'd':
    	if (x<72){
      erase_ship(x,y);
      x += 7;
      draw_ship(x,y);
    	}
    	break;
  	
    case 's':
    	shoot(x,y);
    	break;
    
    case 'm':
    	menu();
    	break;
  
    case 'z':
    	salida();
    	break;
	
    default:
    	ship(x,y);    
  	}
  
  }
	}while(exit_loop != 0);
  
}

void menu(){

	clrscr();
	gotoxy(22,10);
	printf("Izquierda  	A\n");
	gotoxy(22,11);
	printf("Disparar  	S\n");
	gotoxy(22,12);
	printf("Derecha    D\n");
	gotoxy(22,13);
	printf("Menu    M\n");
	gotoxy(22,14);
	printf("Salir    Z\n");
	gotoxy(22,16);
	printf("Para empezar a jugar, presione E\n");
	gotoxy(22,17);
	printf("Para salir, presione Z\n");

	b = getch();

	switch (b){

  case 'e':
  	centership(x,y);
  	break;
	
  case 'z':
  	salida();
  	break;

  default:
  	menu();
    	
	}

}


void main(){

	menu();
}

[tree_for]

when I compiled ur code it throws out a error saying that gotoxy was declared, and another one saying that clear screen commmand was not declared....
I complied it using VC++ 6.0

[ObiWan]

clrscr is only availabe in borland c++

and i think gotoxy is a reserved variable in VC++

I compiled it in borland turbo c++ and it compiled fine

[DWk]

Check this out B)

#include <stdio.h>
#include <conio.h>
#include <stdlib.h>
#include <dos.h>
#include <time.h>

#define ENEMY_WAIT 1

void shoot (int x, int y);
void menu ();
void salida ();
void draw_ship(int x, int y);
void erase_ship(int x, int y);
void draw_enemy(int x, int y);
void erase_enemy(int x, int y);
void scroll (int x, int y);


void erase_enemy(int x, int y){
  //delay(200);
  int index;
  
	for(index=0;index<4;index++){
  gotoxy(x,y+index);
  printf("       ");
	}
}

void draw_enemy(int x, int y){
  gotoxy(x,y);
  printf("VvvvvvV");
  gotoxy(x,y+1);
  printf(" VvvvV ");
  gotoxy(x,y+2);
  printf("  VvV  ");
  gotoxy(x,y+3);
  printf("   V   ");

}


void salida(){
  clrscr();
  //sleep(500);
  printf("Gracias por jugar\n");
  exit(0);
}

void erase_ship(int x, int y){
   gotoxy(x,y);
   printf("       ");
   gotoxy(x,y-1);
   printf("       ");
   gotoxy(x,y-2);
   printf("       ");
   gotoxy(x,y-3);
   printf("       ");
}

void draw_ship(int x, int y){
   gotoxy(x,y);
   printf("*-----*");
   gotoxy(x,y-1);
   printf(" *---* ");
   gotoxy(x,y-2);
   printf("  *-*  ");
   gotoxy(x,y-3);
   printf("   *   ");
}

void borrar_bala(int x, int y){
  int i=21;
  while (i>0){
    int ejex = x;
    gotoxy(ejex+3,i);
    printf(" ");
    i--;
  }

}

void shoot(int x, int y){
  int i=21;
  while (i>0){
    int ejex = x;
    gotoxy(ejex+3,i);
    printf("|");
    delay (5);
    i--;
  
  }
  borrar_bala(x,y);
  
}

void game_loop(){

  int exit_loop = 0;
  int x = 35;
  int y = 25;
  int posex;
  int posey = 1;
  char b;
  time_t set_time;
  time_t check_time;
  
  time(&set_time);
  srand((int) set_time);
  posex = ( (rand()%10) + 1 ) * 7;
  clrscr();
  draw_ship(x,y);
    
	do{
    if(kbhit()){
      b = getch();
      switch(b){
      
        case 'a':
          if (x>7){
            erase_ship(x,y);
            x-=7;
            draw_ship(x,y);
          }
          break;
              
        case 'd':
          if (x<70){
            erase_ship(x,y);
            x+=7;
            draw_ship(x,y);
          }
          break;
      
        case 's':
          shoot(x,y);
          break;
        
        case 'm':
          menu();
          break;
    
        case 'z':
          salida();
          break;
  
        //default:
          //ship(x,y);    
  	}
  }
    time(&check_time);
    if( (check_time-set_time) >= ENEMY_WAIT){
      set_time = check_time;
      erase_enemy(posex,posey);
      posey+=4;
      if(posey <= 20)
      	draw_enemy(posex,posey);
    else{
      posey = 1;
      posex = ( (rand()%10) + 1 ) * 7;
    }
    }    
  }while(!exit_loop);
    
}

void menu(){

	char b;
	
  clrscr();
  gotoxy(22,10);
  printf("Izquierda      A\n");
  gotoxy(22,11);
  printf("Disparar      S\n");
  gotoxy(22,12);
  printf("Derecha        D\n");
  gotoxy(22,13);
  printf("Menu        M\n");
  gotoxy(22,14);
  printf("Salir        Z\n");
  gotoxy(22,16);
  printf("Para empezar a jugar, presione E\n");
  gotoxy(22,17);
  printf("Para salir, presione Z\n");

  b = getch();

  switch (b){

    case 'e':
      game_loop();
      break;
  
    case 'z':
      salida();
      break;

    default:
      menu();
          
  }

}


int main(){

  menu();
}

So far so good. 80% Done

[ObiWan]

looking good

[ObiWan]

the ship can now be hit

#include <stdio.h>
#include <conio.h>
#include <stdlib.h>
#include <dos.h>
#include <time.h>

#define ENEMY_WAIT 1
int hit;
int hity;
int posey = 1;

void shoot (int x, int y);
void menu ();
void salida ();
void draw_ship(int x, int y);
void erase_ship(int x, int y);
void draw_enemy(int x, int y);
void erase_enemy(int x, int y);
void scroll (int x, int y);


void erase_enemy(int x, int y){
 //delay(200);
 int index;

for(index=0;index<4;index++){
 gotoxy(x,y+index);
 printf("       ");
}
}

void draw_enemy(int x, int y){
 gotoxy(x,y);
  hit = x;
  hity = y;
 printf("VvvvvvV");
 gotoxy(x,y+1);
 printf(" VvvvV ");
 gotoxy(x,y+2);
 printf("  VvV  ");
 gotoxy(x,y+3);
 printf("   V   ");

}


void salida(){
 clrscr();
 //sleep(500);
 printf("Gracias por jugar\n");
 exit(0);
}

void erase_ship(int x, int y){
  gotoxy(x,y);
  printf("       ");
  gotoxy(x,y-1);
  printf("       ");
  gotoxy(x,y-2);
  printf("       ");
  gotoxy(x,y-3);
  printf("       ");
}

void draw_ship(int x, int y){
  gotoxy(x,y);
  printf("*-----*");
  gotoxy(x,y-1);
  printf(" *---* ");
  gotoxy(x,y-2);
  printf("  *-*  ");
  gotoxy(x,y-3);
  printf("   *   ");
}

void borrar_bala(int x, int y){
 int i=21;
 while (i>0){
   int ejex = x;
   gotoxy(ejex+3,i);
   printf(" ");
   i--;
 }

}

void shoot(int x, int y){
 int i=21;
 while (i>0){
   int ejex = x;
   gotoxy(ejex+3,i);
   printf("|");
   delay (5);
   i--;

 }
 if (x==hit){
erase_enemy(x,hity);
posey=18;
}
 borrar_bala(x,y);

}

void game_loop(){

 int exit_loop = 0;
 int x = 35;
 int y = 25;
 int posex;

 char b;
 time_t set_time;
 time_t check_time;

 time(&set_time);
 srand((int) set_time);
 posex = ( (rand()%10) + 1 ) * 7;
 clrscr();
 draw_ship(x,y);

do{
   if(kbhit()){
     b = getch();
     switch(b){

       case 'a':
  if (x>7){
    erase_ship(x,y);
    x-=7;
    draw_ship(x,y);
  }
  break;

       case 'd':
  if (x<70){
    erase_ship(x,y);
    x+=7;
    draw_ship(x,y);
  }
  break;

       case 's':
  shoot(x,y);
  break;

       case 'm':
  menu();
  break;

       case 'z':
  salida();
  break;

       //default:
  //ship(x,y);
  }
 }
   time(&check_time);
   if( (check_time-set_time) >= ENEMY_WAIT){
     set_time = check_time;
     erase_enemy(posex,posey);
     posey+=4;
     if(posey <= 20)
      draw_enemy(posex,posey);
   else{
     posey = 1;
     posex = ( (rand()%10) + 1 ) * 7;
   }
   }
 }while(!exit_loop);

}

void menu(){

char b;

 clrscr();
 gotoxy(22,10);
 printf("Izquierda\tA\n");
 gotoxy(22,11);
 printf("Disparar\tS\n");
 gotoxy(22,12);
 printf("Derecha\t\tD\n");
 gotoxy(22,13);
 printf("Menu\t\tM\n");
 gotoxy(22,14);
 printf("Salir\t\tZ\n");
 gotoxy(22,16);
 printf("Para empezar a jugar, presione E\n");
 gotoxy(22,17);
 printf("Para salir, presione Z\n");

 b = getch();

 switch (b){

   case 'e':
     game_loop();
     break;

   case 'z':
     salida();
     break;

   default:
     menu();

 }

}


int main(){

 menu();
 return 0;
}