Multiple files

[Widget360]

I am using dev c++ and the allegro library. Im makeing a simple game however i
need to figure out how to make a program with multiple cpp files. So, how do i do it? I thought u make ur main, make a header file, make the other cpp file, and say #include <(name of header file)> in the main cpp file. Is this right, because it doesnt work for me.

google has not helped me, as i get indefinite results...

[Computergeek01]

For Dev C++ check under Window -> List and make sure that all of your files are included in the project. If any of them aren't then add them through Project -> Add To Project. This is the most common problem anyway, if it's not what you are experiancing then we'll need to see some error codes.

[Widget360]

Okay, when i say "it doesnt work for me" I realy mean, I have no idea what im doing...

heres my main code...

/*
  Name: Widget360 
  Copyright: 2011
  Author: Widget360
  Date: 07/04/11 14:09
  Description: My First Game
*/

#include <allegro.h>
// main
int main(int argc, char *argv[])
{
    allegro_init();
    install_keyboard();
    set_color_depth(16);
    set_gfx_mode(GFX_AUTODETECT, 1280,800,0,0);
    // background
    BITMAP *Intro_Background = load_bitmap("C:/Users/Widget360/Documents/projects/My First Game/Images/Intro_Background.bmp", NULL);
    // sprite
    BITMAP *Intro_Sprite = load_bitmap("C:/Users/Widget360/Documents/projects/My First Game/Images/Intro_Sprite.bmp", NULL);
    // buffer
    BITMAP *Intro_Buffer = create_bitmap(1280,800);
    // check
    int Intro_Check = 1;
    int Intro_Check_Main = 1;
    int Intro_Start_Top = 400;
    int Intro_Start_Bottom = 300;
    int Intro_Start_Right = 1000;
    int Intro_Start_Left = 750;
    int Intro_Quit_Top = 600;
    int Intro_Quit_Bottom = 500;
    int Intro_Quit_Left = 750;
    int Intro_Quit_Right = 1000;
    int Intro_Sprite_X = 0;
    int Intro_Sprite_Y = 0;
    // main intro loop
    while (Intro_Check != 0)
    {
        while (Intro_Check_Main != 0)
        {
            if(key[KEY_RIGHT])
            {
                Intro_Sprite_X ++;
            }
            if (key[KEY_LEFT])
            {
                Intro_Sprite_X --;
            }
            if (key[KEY_UP])
            {
                Intro_Sprite_Y --;
            }
            if (key[KEY_DOWN])
            {
                Intro_Sprite_Y ++;
            }
            // show buffer
            blit(Intro_Background, Intro_Buffer, 0, 0, 0, 0, 1280, 800);
            draw_sprite(Intro_Buffer, Intro_Sprite, Intro_Sprite_X, Intro_Sprite_Y);
            blit(Intro_Buffer,screen,0,0,0,0, 1280, 800);
            // start - boundries
            if (Intro_Sprite_X >= Intro_Start_Left && Intro_Sprite_X <= Intro_Start_Right)
            {
                if (Intro_Sprite_Y >= Intro_Start_Bottom && Intro_Sprite_Y <= Intro_Start_Top)
                {
                    Intro_Check = 0;
                    Intro_Check_Main = 0;
                }
            }
            // quit - boundries
            if (Intro_Sprite_X >= Intro_Quit_Left && Intro_Sprite_X <= Intro_Quit_Right)
            {
                if (Intro_Sprite_Y >=  Intro_Quit_Bottom && Intro_Sprite_Y <= Intro_Quit_Top)
                {
                    allegro_message("Game Quit");
                    exit(EXIT_FAILURE);
                }
            }
        }
    }
    // clean up
    destroy_bitmap(Intro_Background);
    destroy_bitmap(Intro_Buffer);
    destroy_bitmap(Intro_Sprite);
}
END_OF_MAIN()

where i Have

if (Intro_Sprite_X >= Intro_Start_Left && Intro_Sprite_X <= Intro_Start_Right)
            {
                if (Intro_Sprite_Y >= Intro_Start_Bottom && Intro_Sprite_Y <= Intro_Start_Top)
                {
                    Intro_Check = 0;
                    Intro_Check_Main = 0;
                }
            }

I would have it run this cpp if true... How do I do that...

[D80DSL3A]

For a file in your own project it's #include "fname.h" not #include <fname.h> . Hope that's the problem.

[Widget360]

I dont get any compiling issues. Now instead of having a header, i included a cpp file. Is that ok are do you have to have a header to add a cpp file?

[Widget360]

oh, also. Now that i have included it, how do i run it. I want it to completley closed down the first and go to the next.

[Zhuge]

You should not be including a header source (cpp) file. Could you elaborate on the problem a bit more? I'm not sure what specifically is wrong. Copying the compiler/linker/runtime error message(s) would be helpful.

[Computergeek01]

.cpp files included into your project are normally just functions for your header files. They aren't meant to be seperate stand alone applications, they COULD be, but there are a half dozen better ways to do that.

@ Zhuge: Why shouldn't he include a header file? This is his programs entry point, not the other app right?

[Zhuge]

Apologies, I made a typo. I meant to say "source" file, as the OP said:

Now instead of having a header, i included a cpp file.

(Fixed in original post)