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need help writing classes in c++

DrewDough · 2004-01-18T04:23:01

well i am pretty new to learning how to use classes now and after getting some help from people on this board i tried implementing classes into my program... well i changed everything . I am working on a simple and small text based RPG, and i moved most of my functions and re-wrote them into functions of an enemy and player class. and now when it compiles i get 35 errors.... all of them have to do with when i send an object to a function(the function that recieves the object could be in main or in another class)... that function never heard of any of the objects variables or internal functions... in fact i even get an error when i pass the object itself, at the line of it being passed. like enter_combat(player &current_player, enemy &monster) at this line i get an error and its even saying its never heard of either of these objects. can anyone help? here is the source. please let me know what im doing wrong. thanks #include <iostream> #include <stdlib.h> #include <time.h> #include <string> using namespace std; class player { public: player(int init_health,int init_stam,int init_mana,int init_bullets); ~player(); int attack_prompt(enemy &drifter,string enemy_name); void attack(enemy &drifter); void take_dmg(int enemydmg); void use_stamina(int used_stamina); void use_mana(int used_mana); void use_bullets(int bullets); void cast_heal(int healed_for); void shoot(int used_bullets); //private: int health; int stamina; int mana; int bullets; }; player::player(int init_health,int init_stam,int init_mana,int init_bullets) { health = int init_health; stamina = init_stam; mana = init_mana; bullets = init_bullets; } int player::attack_prompt(enemy &drifter,string enemy_name) //void attack_prompt(string enemy_name,player &current_player, enemy &drifter) //(int player_stamina,int player_mana,int bullets,int enemy_health,char &attack_type,string enemy_name) { cout<<"You have: "<<" "<<enemy_name<<" has: "<<endl; cout<<"***********************"<<" *********************"<<endl; cout<<"---"<<health<<"---"<<"--health------"<<" -------"<<enemy_health<<"------health"<<endl; cout<<"---"<<stamina<<"---"<<"---stamina-----"<<" *********************"<<endl; cout<<"---"<<mana<<"---"<<"---mana--------"<<endl<<endl; cout<<"---"<<bullets<<"---"<<"---bullets--------"<<endl<<endl; cout<<"********************************************************************************"<<endl<<endl; cout<<"Type the number for the attack type and press enter"<<endl<<endl; //prompts the user to enter what kind of attack they want to do if (bullets > 0) //if the player has bullets, show fire gun as an option { cout<<"[1 for sword attack,2 for magic,or 3 to fire gun]"<<endl; cin>>attack_type; if (attack_type == ''2'') //if the player chose magic, show the spell choice { cout<<"[1 for fireball, 2 for HEAL]"<<endl; cin>>attack_type; if (attack_type == ''1'') { attack_type = ''2''; //this converts the users input from ''1'' to ''2'', //because attack_type of ''2'' will do a fireball //and before this attack_type is ''0'' } else if (attack_type == ''2'') { attack_type = ''4''; //this convers the users input from ''2'' to ''4'' //because ''4'' is the heal spell } } cout<<endl<<endl; system("cls"); } else if (bullets <= 0) //if the player doesnt have bullets, dont show the gun { cout<<"[1 for sword attack,2 for magic]"<<endl; cin>>attack_type; if (attack_type == ''2'') //if the player chose magic, show the spell choice { cout<<"[1 for fireball, 2 for HEAL]"<<endl; cin>>attack_type; if (attack_type == ''1'') { attack_type = ''2''; //this converts the users input from ''1'' to ''2'', //because attack_type of ''2'' will do a fireball //and before this attack_type is ''0'' } else if (attack_type == ''2'') { attack_type = ''4''; //this convers the users input from ''2'' to ''4'' //because ''4'' is the heal spell } } cout<<endl<<endl; system("cls"); } return attack_type; } void player::attack(enemy &drifter) //int &enemy_health,char attack_type,int &player_stamina,int &player_mana,int &bullets) //calculates players attack and sends back updated enemy health, player stamina, and player mana { int attack = 0; int defence = 0; int damage = 0; int used_stamina = 0; int used_mana = 0; int used_bullets = 0; int healed_for = 0; int attack_type = attack_prompt(); attack = (rand () % 11) + 2; //generates random number for attack // a dice number (2-12) defence = (rand () % 11) + 2; //generats random number for defence // a dice number if (attack > defence) //compares attack to defence, if bigger, it is a hit and //then calculates damage and updates enemy_health { if(attack_type == ''1'') //if the attack type was a sword attack, then { if (player_stamina < 4) //check to see if the player has enough stamina to execute //the attack { cout<<"|=|=|=|=|You are exhausted|=|=|=|=|"<<endl<<endl; //if player doesnt have enough stamina, //will print "you are exhausted", and bail //out of the function completely } else { cout<<"****You hit!****"<<endl<<endl; //else the player has enough stamina, print //you hit, then damage = ((rand () % 11) + 2); //calculate damage (random number 1-12) used_stamina = 4; //and use 4 stamina } if (damage > 10) //if damage is more then 10, say you sliced him { cout<<"You sliced the enemy for "<<damage<<" damage!"<<endl<<endl; } else if (damage > 0) //if its less then 10 but more then 0 (ie you had enough stamina) //print you stabbed him { cout<<"You stabbed the enemy for "<<damage<<" damage!"<<endl<<endl; } } else if(attack_type == ''2'') //OR if attack type was a magic attack { if (player_mana >= 5) //check to see if player has enough mana { cout<<"****You hit!****"<<endl<<endl; //since the player does, say "you hit" damage = ((rand () % 20) + 2); //get damage from random number 2-20 used_mana = 5;//use 5 mana cout<<"The enemy was burned "<<damage<<" damage!"<<endl<<endl; //print the enemy was burned for "damage" } else //if player doesnt have enough mana { cout<<"|=|=|=|=|Not enough mana to cast spell|=|=|=|=|"<<endl<<endl; //say you dont have enough mana } } else if (attack_type == ''3'') //OR you have a gun { damage = ((rand () % 25) + 2); //damage is a random 2-26 if (bullets >= 1) //if you have bullets, say you hit, and use a bullet { used_bullets = 1; cout<<"***You hit!***"<<endl<<endl; } else if (bullets <= 0) //if you dont have bullets, say your out of ammo { used_bullets = 0; cout<<" YOU ARE OUT OF AMMO "<<endl<<endl; } cout<<"The enemy was blasted for "<<damage<<" damage!"<<endl<<endl; //print damage } else if (attack_type == ''4'') //OR the player casted heal { if (player_mana >= 3) //if you have mana, then say success, use mana and add 1-36 health { used_mana = 3; healed_for = ((rand () % 35) + 2); //heals for a random 2-36 cout<<"***The spell was a success!***"<<endl<<endl; cout<<"You healed yourself for "<<healed_for<<" health!"<<endl<<endl; //print damage } else if (player_mana < 3) //if you dont have bullets, say your out of ammo { used_mana = 0; cout<<" YOU ARE OUT OF MANA "<<endl<<endl; } } } else if (defence >= attack) //if defence is bigger, you miss. { damage = 0; if (attack_type == ''1'') //if you miss and used a sword attack, do the follow: { if (player_stamina > 4) //check to see if they have enough stamina { used_stamina = 2; //if they do have enough stamina, take 2 away cout<<"******You missed!*****"<<endl<<endl; //print "you missed" } else if (player_stamina < 4) //else if they dont have enough stamina { cout<<"|=|=|=|=|You are exhausted|=|=|=|=|"<<endl<<endl; //print you are exhausted. } } else if (attack_type == ''2'') //if you misee and used magic, { if (player_mana >= 5) //check to see if they have enough mana { used_mana = 3; //if they do, use 3 mana and cout<<"|=|=|=|=|The spell fizzled|=|=|=|=|"<<endl<<endl; // say the spell fizzled } else if (player_mana < 5) //if they dont have enough mana { cout<<"|=|=|=|=|=|Not enough mana to cast spell|=|=|=|=|=|"<<endl<<endl; //say "do not have enough mana" } } else if (attack_type == ''3'') { if (bullets >= 1) { used_bullets = 1; cout<<"+++++++YOU MISEED!++++++"<<endl<<endl; } else if (bullets <= 0) { used_bullets = 0; cout<<" YOU ARE OUT OF AMMO "<<endl<<endl; } } else if (attack_type == ''4'') //OR the player casted heal { if (player_mana >= 3) //if you have mana, then say success, use mana and add 1-36 health { used_mana = 2; cout<<"***The spell fizzled!***"<<endl<<endl; } else if (player_mana < 3) //if you dont have bullets, say your out of ammo { used_mana = 0; cout<<" YOU ARE OUT OF MANA "<<endl<<endl; } } } drifter.take_dmg(damage); //update enemies health current_player.use_stamina(used_stamina); //update stamina used current_player.use_mana(used_mana); //update mana used current_player.heal(healed_for); current_player.shoot(used_bullets); } void player::take_dmg(int enemydmg) { health = health-enemydmg; if health = 0 { cout<<"You died. Game over."<<endl; } } void player::use_stamina(int used_stamina) { stamina = stamina - used_stamina; } void player::use_mana(int used_mana) { mana = used_mana - mana; } void player::cast_heal(int healed_for) { health = healed_for + health; } void player::shoot(int used_bullets) { bullets = bullets - used_bullets; } class enemy { public: void attack(player &current_player); void take_damage(int damage); //private: int health; }; void enemy::attack(player &current_player) { int attack; int defence; int enemydmg; int attack_type; attack = (rand () % 11) + 2; //makes attack a random between 1-12 defence = (rand () % 11) + 2; //makes defence a random between 1-12 if (attack > defence) //if attack > defence, the PC hits the player { attack_type = rand () % 100; //generates a random number between 1-100, calling it attack_type if(attack_type > 65) //if the number is > 50, then do a melee attack { cout<<"$=$=$=You were hit!=$=$=$"<<endl<<endl; //prints you were hit enemydmg = (rand () % 11) + 2; //enemy damage for this melee attack is a random //between 1-12 cout<<"Enemy bashed you for "<<enemydmg<<" damage!"<<endl<<endl; //print the damage done } else //if the number is < 50, then do a magic attack { cout<<"$=$=$=$=You were hit!=$=$=$=$"<<endl<<endl; //prints you were hit enemydmg = (rand () % 20) + 2; //enemy damage for this "lightning" attack //is a random between 2-20 cout<<"Enemy bolted you for "<<enemydmg<<" damage!"<<endl<<endl; //print the damage done } } else if (defence >= attack) //if defence > attack, the pc missed the player { enemydmg = 0; cout<<"=$=$=$=$They missed you!=$=$=$=$"<<endl<<endl; //print they missed you } //updated player health current_player.take_damage(enemydmg) } void enemy::take_dmg(int player_damage); { health = health - damage; } string random_enemy_name(); //all this does is give a random chance of the person you fights name. soon will add this to //effect stats, hps, attack types, etc. maybe then name it to enemy_stats or something bool random_bool(); //a function that randomizes the event of an event (block of code) happening. such as drop loot, //etc.it basically just returns true or false on a 50/50 chance. could be switch to 70/30 or different. void intro_screen (); //a simple print screen function that prints the welcome screen void attack_prompt(int player_stamina,int player_mana,int bullets,int enemy_health,char &attack_type,string enemy_name); //just a print screen of the current stats for player/enemy. also prompts for next attack //and returns attack_type //this function calculates the enemies attack, and sends back the players updated health void player_movement (int &spaces_moved);//this prints the movment keys and also //starts a counter called spaces_moved //which records how many spaces the player moved void rand_attack (bool &battle_now); //this calculates the chances of a random //attack. it doesnt start untill the player //moves at least one space. it returns a //boolean value of true if combat is started //and false if no combat started. void enter_combat(int &player_stamina,int &player_mana,int &bullets;; //this manages all combat. it called the player_attack and enemy_attack functions, updates //all health,stamina, and mana. it also prints out results of each hit etc. int main() { player current_player(200,120,65,0); enemy drifter; int spaces_moved = 0; bool battle_now; srand (time (NULL)); //set the seed to the internal clock of the computer intro_screen(); //simply prints the intro screen to the screen do { player_movement(spaces_moved); //pop up the movement screen rand_attack(battle_now);//check for random attack (80% chance of attack) if (battle_now == true) //if the attack is true, then enter combat, if not, go back //to the top, ask for movement, and look for another random attack { enter_combat(current_player, enemy drifter); } } while (current_player.health > 0 && spaces_moved < 20); //do this all untill the player dies //or beats the game if (player_health < 0) //if the player died, say game over. { cout<<"You are dead"<<endl; cout<<"Game Over"<<endl; } else if (spaces_moved == 20) //if the player reached the end, say you win { cout<<"**************************************"<<endl; cout<<" YOU WIN!! You have reached the end!!!"<<endl<<endl; cout<<"**************************************"<<endl; } return 0; } void intro_screen () //simply prints the welcome screen to the player. { cout<<"********************************************************************************"<<endl; cout<<"*********************************WELCOME TO FTA*********************************"<<endl; cout<<"********************************************************************************"<<endl; cout<<"**************************DONKEY PUNCH PRODUCTIONS INC.*************************"<<endl; cout<<"********************************************************************************"<<endl; } void player_movement (int &spaces_moved) { char direction; cout<<"Press ''W'' to move up"<<endl; cout<<"Press ''A'' to move left"<<endl; cout<<"Press ''S'' to move right"<<endl; cout<<"Press ''Z'' to move backwards"<<endl<<endl; cin>>direction; if (direction == ''w'') { cout<<"You moved forward."<<endl<<endl; } else if (direction == ''a'') { cout<<"You moved left."<<endl<<endl; } else if (direction == ''s'') { cout<<"You moved right."<<endl<<endl; } else { cout<<"You moved backwards."<<endl<<endl; } spaces_moved = spaces_moved + 1; cout<<"You moved a total of "<<spaces_moved<<" spaces."<<endl<<endl; } void rand_attack (bool &battle_now) { int attack_chance = (rand () % 100) + 1; //this sets up a random fight wiht 15% chance of happening if (attack_chance > 65) { battle_now = true; } else if (attack_chance <=65 ) { battle_now = false; } } void enter_combat(player &current_player,enemy &drifter) { string enemy_name = random_enemy_name(); int bullets_found = 0; bool gun; system("cls"); cout<<"**************************YOU HAVE ENTERED COMBAT!*****************************"<<endl<<endl; do //show enemy/player status //do player attack //do enemy attack //while player and enemy are both still alive { current_player.attack_prompt(enemy &drifter, string enemy_name); //player_attack (enemy_health,attack_type,player_stamina,player_mana,bullets); current_player.attack(enemy &drifter); //this calculates the players attack, and updates enemyhealth/player stamina/mana drifter.attack(player &current_player); //this calculates the enemies attack, and updates player health. } while ((current_player.health > 0) && (drifter.health > 0)); //runs this battle untill one of the player dies. //this down here is clean up code after the enemy dies //it prints if i defeated them, it resets the enemies health to 40 //and it gives a random chance for a gun to drop. if (drifter.health < 0) { cout<<"You have defeated the enemy"<<endl; drifter.health = 40; gun = random_bool(); if (gun == true) { cout<<"Enemy dropped a gun"<<endl<<endl; bullets_found = 12; } } current_player.bullets = bullets_found + bullets; } bool random_bool() { int random = rand() % 100; if (random >= 50) { return true; } else { return false; } } string random_enemy_name() { string enemy_name; int name_chance = rand() % 100; if (name_chance < 25) { enemy_name = "Hit Man"; } else if (name_chance > 25 && name_chance < 50) { enemy_name = "Orc Gunner"; } else if (name_chance > 50 && name_chance < 75) { enemy_name = "Drifter"; } else { enemy_name = "Cop"; } return enemy_name; }

General and Gameplay Programming Programming

Started by graveyard filla January 17, 2004 04:22 AM

10 comments, last by graveyard filla 20 years, 3 months ago

graveyard filla

605

Author

January 18, 2004 01:06 AM

i decided im going to just combine my two classes ("enemy" and "player" will become "character") into one since they have similar traits, plus it will take care of this problem. ill post back if i need anymore help. thanks.

FTA, my 2D futuristic action MMORPG

Qw3r7yU10p!

819

January 18, 2004 04:23 AM

When you say you''ve getting errors, post the errors. Most of the time we can work out what''s wrong just from the error message and the surrounding code. The length of the code you''re posting is unreasonable to read through without even knowing what error to look for. The course of action I would take is to load up the code into my development environment and try to compile it. But that all takes more time.

Post the error messages and you''ll get more answers.

need help writing classes in c++

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need help writing classes in c++

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