From: "Jose MF" <josemataf AT hotmail DOT com>
Newsgroups: comp.os.msdos.djgpp
Subject: little problem
Date: Sat, 13 Jan 2001 16:22:00 -0000
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To: djgpp AT delorie DOT com
DJ-Gateway: from newsgroup comp.os.msdos.djgpp
Reply-To: djgpp AT delorie DOT com

hail to all
I'm making a game and I would want to use allegro libraries to make it, I
was doing the source code for it, and I was testing it, using normal
textmode, whitout allegro, it worked.
But when I insert the - include "allegro.h" -, whitout making any changes,
the compiler got some errors:
Code:
#include <iostream.h>
#include <conio.h>
#include <dos.h>
#include "allegro.h"
#include "snake.h"
#include "screen.h"

Tela tela;
Snake *snake;
void play()
{
   Tela tela;
   char keyP='d';
   int end=0;
   clrscr();
   while(!end)
   {
      while(!kbhit())
      {
         delay(100);
         tela.clrSnake(*snake);
         snake->makeBizz(keyP);
         tela.makeBizz(*snake);
         end=snake->actTouch(tela.chkTouch(*snake));
      }
      keyP=getch();
      if(keyP == 'q') end=1;
   }
}

void main()
{
   snake=new Snake();
   play();
}
Error:
Compiling: ASnake.cpp(8) Error: syntax error before ';'
In function 'void play()' :
ASnake.cpp(12) Error: 'Tela' undeclared (first use this function)
ASnake.cpp(12) Error: (Each undeclared identifier is reported only once
ASnake.cpp(12) Error: for each function it appears in.)
ASnake.cpp(12) : parse error before ';'
ASnake.cpp(21) 'tela' undeclared (first use this function)
That is!! I thing it something about first error, I'm gona share 'Tela'
Class:
- screen.h -
#include <stdlib.h>
#include <conio.h>

#include "snake.h"

#ifndef SCREEN_H
#define SCREEN_H
class Tela {
   Coord item;
   void drawSnake(Snake snake);
   public :
      Tela();
      void makeBizz(Snake snake);
      void clrSnake(Snake snake);
      void genItem();
      void drawItem();
      int chkTouch(Snake snake);
};
#endif
- screen.cpp -
#include "screen.h"

Tela::Tela()
{
   genItem();
}
//Snake Stuff
void Tela::makeBizz(Snake snake)
{
   this->drawSnake(snake);
}

void Tela::drawSnake(Snake snake)
{
   Coord member;
   for(int cont=0;cont<snake.nMemb;++cont)
   {
      member=snake.member[cont]->retMember();
      gotoxy(member.x, member.y);
      cprintf("#");
   }
}

void Tela::clrSnake(Snake snake)
{
   Coord member;
   for(int cont=0;cont<snake.nMemb;++cont)
   {
      member=snake.member[cont]->retMember();
      gotoxy(member.x, member.y);
      cprintf(" ");
   }
   drawItem();
}

int Tela::chkTouch(Snake snake)
{
   Coord head;
   head=snake.member[0]->retMember();
   if(head.x==item.x && head.y==item.y)
   {
      genItem();
      return 1;
   }
   return 0;
}
//Item Stuff
void Tela::genItem()
{
   item.x=(random() % 80)+1;
   item.y=(random() % 25)+1;
}

void Tela::drawItem()
{
 //  genItem();
   gotoxy(item.x, item.y);
   textcolor(RED);
   cprintf("0");
   textcolor(WHITE);
}
 -------------------------------
Its all, Tanks in advance - note that this program runs whitout - include
"allegro.h"
Hail to all