linking source files

This is a discussion on linking source files within the C++ Programming forums, part of the General Programming Boards category; Hi guys! I am writing a text adventure game, and it is all going really well at the moment. I ...

  1. #1
    Its hard... But im here swgh's Avatar
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    linking source files

    Hi guys!

    I am writing a text adventure game, and it is all going really well at the moment.

    I have written sevral source files for the game, and am using DevC++ in a project mode. when it comiples it, it says

    COMPILE OK == LINK OK

    this all sound possitive, but I am a bit weiry, that when I run the game, will it go the right file to read the code?

    For exmaple, i have coded somthing like

    (health<=0)


    but will it go to the gameover file to read the code or just continue? I know all this sounds really silly as all I have to do is test it, but if I have probs, how can I fix them??

  2. #2
    Dae
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    I'm not sure what to say accept no.. the game will start at int main(); whereever it is in your files. And you know .. it will do whatever you tell it to do in main.
    Warning: Have doubt in anything I post.

    GCC 4.5, Boost 1.40, Code::Blocks 8.02, Ubuntu 9.10 010001000110000101100101

  3. #3
    Registered User MathFan's Avatar
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    COMPILE OK == LINK OK
    This probably means that your files are compiled and linked, and therfore an exe file is created.

    When you execute the program, computer doesn't any longer use (or even need) the source files you've written. It just executes the commands that are stored in the exe file (which has been created from your source files by the compiler).

    Code:
     but will it go to the gameover file to read the code or just continue?
    Well, if you've got something like:

    gameover.cpp:
    Code:
    void GameOver()
    {
    //code...
    }
    main.cpp:
    Code:
    extern void GameOver();
    
    int main()
    {
    //...
    if(health<=0) GameOver();
    //...
    }
    Surely, this is going to work. If you could post some code, it would be a lot easier to answer your question.
    The OS requirements were Windows Vista Ultimate or better, so we used Linux.

  4. #4
    Its hard... But im here swgh's Avatar
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    This is MAIN()

    below is the main() function and basicly the main game it's self, this all compiles fine with on errors or link errors

    Code:
    #include <iostream>
    #include <string>
    #include <stdlib.h>
    #include <cctype>  // files used
    #include <windows.h>
    #include <algorithm>
    #include <conio.h>
    
    
    using namespace std; // for cout and endl;
    
    void intro();
    void level1();
    void plea();
    void wizavillage();
    void signpost();
    void endingANDcredits();
    extern void gameover();
    
    
    /* Player Varibles*/
    string pname; // player name
    int health = 100; // player health;
    int MAXhealth = 500; // player maximum health
    int MINhealth = 1; // player minimum health
    int gold = 0; // gold player has gathered
    int Exp = 0; // experience gained
    int spells = 0; // number of magic spells learned
    string spellname; // string fof spell name
    int level = 1; // player level
    
    /* Enemy Varibles*/
    string enemyname; // string for enemy name
    int ehealth; // enemy health
    int edamage; // enemy damage
    int elevel; // enemy level;
    bool edead; // booleen varible to decide is enemy defeated or active
    bool ealive; // "" 
    
    /* Misc Vsribles*/
    int size;
    int x; // special varibles used in text scroll
    char attack; // used in battle
    char choice; // used in selection
    char magic; // used in magic
    
    int main(int argc, char *argv[])
    {
    
    SetConsoleTitle("W I Z A D O R A - BY PETER WATTS -"); // console Title
    intro();
    level1();
    plea();
    wizavillage();
    signpost();
    endingANDcredits();
    
    if(health<=0) gameover();
    
    return 0;
    } // end main
    
    
    void intro()
    {
    HANDLE h = GetStdHandle ( STD_OUTPUT_HANDLE );
    WORD wOldColorAttrs;
    CONSOLE_SCREEN_BUFFER_INFO csbiInfo; 
      
      /*
       * First save the current color information
       */
    GetConsoleScreenBufferInfo(h, &csbiInfo);
    wOldColorAttrs = csbiInfo.wAttributes; 
      
      /*
       * Set the new color information
       */
    SetConsoleTextAttribute ( h, FOREGROUND_GREEN | FOREGROUND_INTENSITY );
      
    SetConsoleTextAttribute(GetStdHandle(STD_OUTPUT_HANDLE),FOREGROUND_RED| FOREGROUND_GREEN | FOREGROUND_INTENSITY );
    cout << "\n\n";
    cout <<"\t\t=============================================\n";       
    printf("\t\t#   # # #####     #### ####  #### ####   ####\n"
           "\t\t#   # #     #     #  # #   # #  # #   #  #  #\n"
           "\t\t#   # #     #     #  # #   # #  # ####   #  #\n"
           "\t\t# # # #     #     #### #   # #  # # #    ####\n"
           "\t\t# # # #     #     #  # #   # #  # #  #   #  #\n"
           "\t\t##### #     ##### #  # ####  #### #   #  #  #\n"
           "\t\t=============================================\n"
           "\t\t|                                           | \n"
           "\t\t|        Press P to Play A New Game         | \n"
           "\t\t|                                           | \n"
           "\t\t|        Press L to Load A Saved Game       | \n"
           "\t\t|                                           | \n"
           "\t\t|        Press Q to Quit the Game           | \n"
           "\t\t--------------------------------------------- \n");
    cout << "\n\n";
    cout << "\tSelection >";
    cin >> choice;  
    
    if (choice == 'l')
    {
    HANDLE h = GetStdHandle ( STD_OUTPUT_HANDLE );
    WORD wOldColorAttrs;
    CONSOLE_SCREEN_BUFFER_INFO csbiInfo; 
      
      /*
       * First save the current color information
       */
    GetConsoleScreenBufferInfo(h, &csbiInfo);
    wOldColorAttrs = csbiInfo.wAttributes; 
      
      /*
       * Set the new color information
       */
    SetConsoleTextAttribute ( h, FOREGROUND_RED|FOREGROUND_INTENSITY );
      
    system("cls");
    printf("The load feature is not yet avalible...");
    Sleep(2000);
    system("cls");
    intro();
    } 
    
    else if (choice == 'q')
    {
    system("cls");
    HANDLE h = GetStdHandle ( STD_OUTPUT_HANDLE );
    WORD wOldColorAttrs;
    CONSOLE_SCREEN_BUFFER_INFO csbiInfo; 
      
      /*
       * First save the current color information
       */
    GetConsoleScreenBufferInfo(h, &csbiInfo);
    wOldColorAttrs = csbiInfo.wAttributes; 
      
      /*
       * Set the new color information
       */
    SetConsoleTextAttribute ( h, FOREGROUND_BLUE|FOREGROUND_INTENSITY );
    
    printf("Goodbye then, please come back to save the kingdom soon...\n");
    Sleep(3000);
    exit(0);
    } 
    
    else if (choice == 'p')
    {
    system("cls");
    SetConsoleTextAttribute ( h, wOldColorAttrs);
    cin.ignore();
    level1();
    }
    
    else {
    system("cls");
    printf("You must enter one of the three commands!\n");
    Sleep(2000);
    system("cls");
    intro();
    }
    } // end intro
    
    void level1()
    {
    system("cls");
    char senta[]="Hail adventurer!\nDo you seek glory, fame, fortune\nand even gold?\n"
                 "Then I welcome you to my land of magic and fantasy...\nI am Wizadora\n"
                 "and I need your help....\n";
                 
                 size=strlen(senta);
                 for(x=0;x<size;x++)
                 {   
                 Sleep(40); 
                 printf("%c",senta[x]);
                 }
                 Sleep(2000);
    
    system("cls");
    char sentb[]="But before you can start, I need to know your name.\nAs I cannot keep\n"
                 "calling you adventurer now can I?\n"
                 "\n\n"
                 "My name is: ";
                 
                 size=strlen(sentb);
                 for(x=0;x<size;x++)
                 {   
                 Sleep(40); 
                 printf("%c",sentb[x]);
                 }
                 getline ( cin, pname );
                 
    char sentc[]="\n\n"
                 "So, your name is ";
                 
                 size=strlen(sentc);
                 for(x=0;x<size;x++)
                 {   
                 Sleep(40); 
                 printf("%c",sentc[x]);
                 }
                 cout<<""<< pname <<""<<endl;             
                 
    char sentd[]="Thats is a nice name!\nI hope we can get on well together...\n"
                 "Would you like to hear my story of why I have come to ask for your\n"
                 "aid ";
                 
                 size=strlen(sentd);
                 for(x=0;x<size;x++)
                 {   
                 Sleep(40); 
                 printf("%c",sentd[x]);
                 }
                 cout<<""<< pname <<"?"<<endl;
                 printf("\n\n"
                        "Press Y to hear her plea or N to continue anyway\n"
                        "\n\n");
                 cout << "Will you? ";
                 cin >> choice;
                
    
    if (choice == 'n')
    {
    system("cls");
    wizavillage();
    }
    
    else if (choice == 'y')
    {
    system("cls");
    plea();
    }
    
    else {
    printf("\n\n"
           "You must enter yes or no...");
           Sleep(2000);
           level1(); // loop back to start of game to make sure question is aswered
           }
           } // end of level1
           
    void plea()
    {
    HANDLE h = GetStdHandle ( STD_OUTPUT_HANDLE );
    WORD wOldColorAttrs;
    CONSOLE_SCREEN_BUFFER_INFO csbiInfo; 
      
      /*
       * First save the current color information
       */
    GetConsoleScreenBufferInfo(h, &csbiInfo);
    wOldColorAttrs = csbiInfo.wAttributes; 
      
      /*
       * Set the new color information
       */
    SetConsoleTextAttribute ( h, FOREGROUND_GREEN|FOREGROUND_INTENSITY );
    system("cls");
    char sentmp[]="The land of Wiza, which is basicly a land of child fantasy\n"
                  "has always been a peaceful land, where young trainee wizards\n"
                  "and witches roam, and practice their magic in the hope that\n"
                  "one day, they can use it to help bring peace to the world...\n"
                  "\n\n";
                  
                  size=strlen(sentmp);
                 for(x=0;x<size;x++)
                 {   
                 Sleep(40); 
                 printf("%c",sentmp[x]);
                 }
                 Sleep(2000);
                 system("cls");
    
    char sentmpa[]="But one day, the evil witch DRUCILA cast an evil spell\n"
                   "on all the people who live in Wiza.\n"
                   "Her plan is to make all the people her slaves, so she can\n"
                   "have enough power to conquer the WHITE WILLOW, which is the\n"
                   "source of all our powers, and turn it evil...\n"
                   "\n\n";
                   
                   size=strlen(sentmpa);
                 for(x=0;x<size;x++)
                 {   
                 Sleep(40); 
                 printf("%c",sentmpa[x]);
                 }
                 Sleep(2000);
                 system("cls");
                 
    char sentmpb[]="But hope is not lost....\n"
                   "\n\n"
                   "I have been instructed by the WHITE WILLOW to challenge\n"
                   "DRUCIA and break her spell that she has over us.\n"
                   "I am all but an amatuer witch at the moment, that is why\n"
                   "I need your help to battle the monsters that DRUCILA has\n"
                   "crafted into Wiza...\n"
                   "I know if we work as a team, we can defeat DRUCILA and restore\n"
                   "peice to Wiza!\n"
                   "\n\n";
                   
                   size=strlen(sentmpb);
                 for(x=0;x<size;x++)
                 {   
                 Sleep(40); 
                 printf("%c",sentmpb[x]);
                 }
                 Sleep(2000);
                 system("cls");
                 SetConsoleTextAttribute ( h, wOldColorAttrs);
                 wizavillage();
                 } // end of plea
    
    void wizavillage()
    {
    char sente[]="\tWIZA VILLAGE\n"
                 "\n\n"
                 "Welcome to my village.... Hmm, I guess it would be a good\n"
                 "Idea to stock up on magic or supplies before we venture into\n"
                 "The woods ahead, Ok then, were to first ";
                     
                 size=strlen(sente);
                 for(x=0;x<size;x++)
                 {   
                 Sleep(40); 
                 printf("%c",sente[x]);
                 }
                 cout<<""<< pname <<"?"<<endl;
                 Sleep(2000);
                 system("cls");
                 signpost();
                 } // end function WizaVillage()
                 
    void signpost()
    {
    system("cls");
    char sentf[]="Please Select a destination then hit ENTER\n"
                 "\n\n"
                 "Magic Shop ==  Press M\n"
                 "\n\n"
                 "Go to Wiza Woods == Press W\n"
                 "\n\n"
                 "Old Church == Press C\n"
                 "\n\n";
                 
                  size=strlen(sentf);
                 for(x=0;x<size;x++)
                 {   
                 Sleep(40); 
                 printf("%c",sentf[x]);
                 }
                 
                 cout << "\tSelection: ";
                 cin >> choice;
                 
                 
    }// end signpost             
    
    void endingANDcredits()
    { 
    HANDLE h = GetStdHandle ( STD_OUTPUT_HANDLE );
    WORD wOldColorAttrs;
    CONSOLE_SCREEN_BUFFER_INFO csbiInfo; 
      
      /*
       * First save the current color information
       */
    GetConsoleScreenBufferInfo(h, &csbiInfo);
    wOldColorAttrs = csbiInfo.wAttributes; 
      
      /*
       * Set the new color information
       */
    SetConsoleTextAttribute ( h, FOREGROUND_GREEN|FOREGROUND_INTENSITY );
    system("cls");
    char senteog[]="Drucila Falls to the floor and trys to grab you\n"
                   "as you take a step back from her...\n"
                   "\n\n"
                   "The chapel begins to tumble to the floor, you manage to\n"
                   "escape through the large window on your left hand side.\n"
                   "\n\n"
                   "You run and run as the cathedral tumbles down behind you.\n"
                   "\n\n"
                   "The sun breaks through the clouds as they turn from dark\n"
                   "to white\n"
                   "In the faint rays of the sun, the monsters that littered the\n"
                   "ground turn back to the once happy people of Wiza...\n"
                   "\n\n"
                   "You then arrive back in the town square, and recive three\n"
                   "huge cheers as the entire town turns out to give their thanks!\n"
                   "\n\n"
                   "The WHITE WILLOW begins to glow and sprout with joy once more...\n"
                   "\n\n"
                   "You can see the light flowing from it's glistening bark...\n"
                   "\n\n"
                   "\n\n"
                   "With Drucila now defeated, and the land of Wiza finaly free, you can\n"
                   "now take a well earned break....\n"
                   "\n\n"
                   "\n\n"
                   "\n\n"
                   "\n\n"
                   "CONGATULATIONS!!!!!\n"
                   "\n\n"
                   "\n\n"
                   "\n\n"
                   "\n\n"
                   "\n\n"
                   "\n\n";
                   
                   size=strlen(senteog);
                 for(x=0;x<size;x++)
                 {   
                 Sleep(40); 
                 printf("%c",senteog[x]);
                 }
                 
                 Sleep(2000);
                 system("cls");
                 
    char senteogc[]="\tW  I  Z  A  D  O  R  A\n"
                    "\t\n\n"
                    "\tProgramed by - Peter Watts\n"
                    "\t\n\n"
                    "\tWritten and Developed by - Peter Watts\n"
                    "\t\n\n"
                    "\tSound and Music - Steve THE MAN Childs\n"
                    "\t\n\n"
                    "\tSprite Design - Alan Pink\n"
                    "\t\n\n"
                    "\tText Color Program - Peter Watts\n"
                    "\t\n\n"
                    "\tMain dcpp Concept - Archwright Limited\n"
                    "\t\n\n"
                    "\tSpecial Thanks - Alan Pink\n"
                    "\t\n\n"
                    "\t                 Steve Childs\n"
                    "\t\n\n"
                    "\tLook out for the sequal soon!!!\n"
                    "\t\n\n"
                    "\n\n"
                    "\n\n"
                    "\n\n"
                    "\n\n"
                    "\t\tT  H  E      E  N  D\n"
                    "\n\n"
                    "\n\n"
                    "\n\n"
                    "\n\n"
                    "\n\n"
                    "\n\n";
                    
                     size=strlen(senteogc);
                 for(x=0;x<size;x++)
                 {   
                 Sleep(40); 
                 printf("%c",senteogc[x]);
                 }
                 Sleep(3000);
                 exit(0);
                 } // end of game

  5. #5
    Registered User MathFan's Avatar
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    I've looked quickly through the code and I don't see anything wrong with it (at least at the first glance).

    Though I haven't run it (working in linux only, and didn't want to install a windoze compiler... ). You should test it of course, and then see if you get any strange behavior.

    Looks like a nice game... Keep up the good work
    The OS requirements were Windows Vista Ultimate or better, so we used Linux.

  6. #6
    ------------
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    wow... thats what im trying to be able to do! but im kind of far from being able to (i think...) but it looks nice... im with mathfan... i dont want to install windows compiler to try and play it
    CAUTION: Newbie at programming!
    -------------------------------------------------
    Thanks everyone who helped me with all the questions, and utter lost-ness i happen to have... it is VERY VERY much appreciated

  7. #7
    Dae
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    It looks good. If it compiles fine and links fine then it will create a .exe which will run anything in int main():

    Code:
    int main(int argc, char *argv[])
    {
    
    SetConsoleTitle("W I Z A D O R A - BY PETER WATTS -"); // console Title
    intro();
    level1();
    plea();
    wizavillage();
    signpost();
    endingANDcredits();
    
    if(health<=0) gameover();
    
    return 0;
    } // end main
    Code:
    will it go to the gameover file to read the code or just continue?
    If you didnt include gameover(); in int main() then it wouldnt have read the code. But since you did, it will.

    I think the only thing is somehow you need to make that line "if(health<=0) gameover();" an infinite loop so it will be called exactly when it happens (if you die early in the game) and not at the end of all those functions being finished. This.. I'm not sure how to do. Something to do with seperate windows (using win32 API) I think.. maybe.
    Warning: Have doubt in anything I post.

    GCC 4.5, Boost 1.40, Code::Blocks 8.02, Ubuntu 9.10 010001000110000101100101

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