#include #include #include #include #include using namespace std; /* Code by: Zeke Williams Date: September 27, 2017 Run Instructions: Just hit RUN! Description: I am attempting to make an RPG-style drop sytsem. This is still a work in progress, but hopefully I can make one that is fast and easy to read/implement into my Enemy Line Game. If anyone has made a drop system already, I would love to look at it for learning purposes, as I am a novice c++ hobby coder :) Version: 1.6 Update: 1.6 - This is now a game! I couldn't resist the opportunity to get more likes, so that I feel validated about why I chose to code as a hobby. If I don't get the likes, I'll be crushed. Jk, no one reads this haha comment if you do ;) 1.5 - Revamped the item classes completely, constructors especially. I've now added a small number of weapons for each rarity (two), and a potion for each rarity. More to come I hope! Plans: Not sure what to add now. I think this is how I might actually implement this in an RPG. There might be some more work to do, however. I might make a version where I use file loading to keep weapon data (names, and dmg). */ int randAtoB(int a, int b = 0) { if (b == 0) { return rand() % (a + 1); } return (rand() % (b - a + 1)) + a; } int randPercent() { return (rand() % 100) + 1; } float fRandAtoB(int a, int b) { float num = (float)((rand() % (b - a + 1)) + a); float decimal = (float)rand() / (float)RAND_MAX; float result = num + decimal; result = round(result * 100) / 100; return result; //this gets a random whole number between a and b then gets a decimal 0 to 1.0 and //adds it onto the whole number. Then it rounds to the nearest hundredth } enum class Rarity { COMMON = 1, UNCOMMON, RARE }; class Item { protected: string name; unsigned int count; Rarity rarity; unsigned int value; public: Item(); Item(const string name, Rarity rarity, unsigned int value, unsigned int qty = 1); virtual ~Item(){}; virtual void Display() const = 0; inline string GetName() const { return name; } inline unsigned int GetCount() const { return count; } inline int GetIntRarity() const { return (int)rarity; } inline unsigned int GetValue() const { return value; } virtual void DetermineCount(int rarity) = 0; }; Item::Item() : name("NONE"), count(0), rarity(Rarity::COMMON), value(0) {}; Item::Item(const string name, Rarity rarity, unsigned int value, unsigned int qty) : name(name), rarity(rarity), count(qty), value(value) {}; class Weapon: public Item {//ideally, inherits from item...maybe later private: short int damage; public: //constructors Weapon(const string name, short int damage, Rarity rarity, unsigned int value, unsigned int qty = 1); Weapon(); //functions Weapon* clone(); void Display() const; virtual inline void DetermineCount(int rarity) { count = 1; } //static static Weapon commonWeapons[]; static Weapon uncommonWeapons[]; static Weapon rareWeapons[]; }; Weapon Weapon::rareWeapons[] = { Weapon("Katana", 18, Rarity::RARE, 34), Weapon("Mace", 19, Rarity::RARE, 41) }; Weapon Weapon::uncommonWeapons[] = { Weapon("Long Sword", 11, Rarity::UNCOMMON, 20), Weapon("Scimitar", 13, Rarity::UNCOMMON, 23) }; Weapon Weapon::commonWeapons[] = { Weapon("Short Sword", 7, Rarity::COMMON, 14), Weapon("Dagger", 4, Rarity::COMMON, 12) }; Weapon::Weapon() : Item(), damage(0) {}; Weapon::Weapon(const string name, short int damage, Rarity rarity, unsigned int value, unsigned int qty) : Item(name, rarity, value, qty), damage(damage) {}; Weapon* Weapon::clone() { return new Weapon(*this);//must be deleted } void Weapon::Display() const { cout << name << ", worth " << value << " gold." << endl; } class Potion: public Item { private: int modifier; public: //constructors Potion(); Potion(const string name, int mod, Rarity rarity, unsigned int value, unsigned int qty = 1); //functions void Display() const; Potion* clone(); void DetermineCount(int rarity); //statics static Potion rarePotion; static Potion uncommonPotion; static Potion commonPotion; }; Potion Potion::rarePotion = Potion("Max Heal", 30, Rarity::RARE, 7); Potion Potion::uncommonPotion = Potion("Great Heal", 15, Rarity::UNCOMMON, 12); Potion Potion::commonPotion = Potion("Health Potion", 10, Rarity::COMMON, 17); Potion::Potion() : Item(), modifier(0) {}; Potion::Potion(const string name, int mod, Rarity rarity, unsigned int value, unsigned int qty) : Item(name, rarity, value, qty), modifier(mod) {}; void Potion::Display() const { cout << count << "x " << name << ", worth " << value*count << " gold." << endl; } Potion* Potion::clone() { return new Potion(*this); } void Potion::DetermineCount(int rarity) { int qty = 1; float chance; float offset = (-0.1 * (float)rarity) - 0.1;//needs balancing //rarity is 1, 2, or 3; offset is -0.2, -0.3, or -0.4 do { chance = ((1.0f / sqrt(qty + 1)) + offset) * 100.0f;//magic formula chance = round(chance * 100) / 100; //as success continues, qty grows, reducing the chance by a square root function //sqrt drops off rapidly and the offset reduces the chance even further by dropping the sqrt curve to //start with. So the chance is a function of how much is dropping. //dropping 2 items has chance: 50.71, 40.71, 30.71 % // 3 items : 37.74, 27.74, 17.74 % // 4 : 30.00, 20.00, 10.00 % // 5 : 24.72, 14.72, 4.72 % float decider = fRandAtoB(1, 100);// 1 - 100 if (decider <= chance) { qty++; } else { break; } } while (qty < 6);//5 items in one drop is the limit this->count = qty; } class Enemy { private: int currentHealth; int maxHealth; array drp; public: static short unsigned int nPotions; static short unsigned int nWeapons; //functions void DetermineDrops(); void ShowDrops() const; int CalcDropValue() const; //constructor/destructors Enemy(); ~Enemy(); }; short unsigned int Enemy::nPotions = 0; short unsigned int Enemy::nWeapons = 0; Enemy::Enemy() : maxHealth(20), currentHealth(maxHealth) { for (int i = 0; i < drp.size(); ++i) { drp[i] = nullptr; } DetermineDrops(); } Enemy::~Enemy() { for (int i = 0; i < drp.size(); ++i) { delete drp[i]; drp[i] = nullptr; } } void Enemy::DetermineDrops() { int itemType, rarity; for (int i = 0; i < drp.size(); ++i) { itemType = randPercent(); rarity = randPercent(); if (itemType <= 40) {//40% chance for a weapon if (rarity <= 10) {//10% chance for a rare drp[i] = Weapon::rareWeapons[rand() % 2].clone(); } else if (rarity <= 40) {//30% (40 - 10) chance for uncommon drp[i] = Weapon::uncommonWeapons[rand() % 2].clone(); } else {//60% chance for common drp[i] = Weapon::commonWeapons[rand() % 2].clone(); } drp[i]->DetermineCount(drp[i]->GetIntRarity()); //in a file system, this would be = Item::LoadRandom(itemType, rarity); nWeapons++; } else {//60% chance for potion if (rarity <= 10) { drp[i] = Potion::rarePotion.clone(); } else if (rarity <= 40) { drp[i] = Potion::uncommonPotion.clone(); } else { drp[i] = Potion::commonPotion.clone(); } drp[i]->DetermineCount(drp[i]->GetIntRarity()); nPotions += drp[i]->GetCount(); } } } int Enemy::CalcDropValue() const { int total = 0; for (int i = 0; i < drp.size(); ++i) { total += (int)(drp[i]->GetValue() * drp[i]->GetCount()); } return total; } void Enemy::ShowDrops() const { cout << "*******************\n"; for (int i = 0; i < drp.size(); ++i) { drp[i]->Display(); } cout << endl; } class Game { private: Enemy* pEnemy; int gold; public: Game(); void PlayGame(); }; Game::Game(): gold(0) { pEnemy = nullptr; } void Game::PlayGame() { cout << "Welcome to Body Looter!\n"; cout << "This is a game where you loot 10 bodies, killed by a\nmuch more ambitious and courageous "; cout << "warrior than yourself.\nJust because you're a coward doesn't mean you\nshouldn't reap the "; cout << "benefits! MUAHAHA!\n" << endl; cout << "Good luck! READY SET GO\n" << endl; for (int i = 0; i < 10; ++i) { pEnemy = new Enemy(); cout << "Enemy " << i + 1 << " drop:" << endl; pEnemy->ShowDrops(); gold += pEnemy->CalcDropValue(); delete pEnemy; pEnemy = nullptr; } cout << "You sold all of that loot for " << gold << " gold!\n"; cout << "See if you can get more the next time.\n"; cout << "Thanks for playing. Happy Coding :)\n" << endl; } int main() { srand(static_cast(time(nullptr))); Game game; game.PlayGame(); return 0; }

[Game] Body Looter!