/* * By: Pers * Date: June 7, 2017 * * Description: The purpose of this program is to simulating damage effect during a combat situation to an item (player's shield) in a game. Here, instead of increasing the damage done to an item by a fixed amount for a given enemy and weapon, it's going to varies depending on how badly it has already been damaged. Exponential damage function is responsible for calculating extra damage based on current condition of shield */ #include // std::cout, std::cin, std::endl #include // rand(), srand() #include // std::vector #include // expf(), floorf() #include // time() using std::cout; using std::cin; using std::endl; using std::vector; // Prototypes int dmg(int powPoint, int wpnPoint, int shldPoint, int strikeCnt); float extraDmg(float c); int randGen(int min, int max); int main() { srand((unsigned int)time(0)); // seeding random number generator int shieldPt = 100; // as default int powerPt = randGen(5, 20); // Enemy's power points range: [5 - 20] int weaponPt = randGen(5, 15); // Enemy's weapon points range: [5 - 15] int attackCnt = -1; vector statsVec; // Holds each attack damage points to produce a report statsVec.reserve(16); // reserve capacity as 16 integer statsVec.push_back(shieldPt); cout << "// Military Zone! -- Shield Damage Sim \\\\\n\n"; cout << "\nAttention! Simulation is starting with the following values...\n"; cout << "--------------+---------\n"; cout << "| Shield | " << shieldPt << " Pt" << endl; cout << "| Enemy Power | " << powerPt << " Pt" << endl; cout << "| Weapon rate | " << weaponPt << " Pt" << endl; cout << "--------------+---------\n\n"; while(shieldPt > 0) { ++attackCnt; shieldPt = dmg(powerPt,weaponPt,shieldPt, attackCnt); statsVec.push_back(shieldPt); // stores each return value } cout << "\nGenerating visual damage report...\n\n"; for (unsigned int i = 0; i < statsVec.size(); ++i) { cout << "Attack #" << i << " "; for (int j = 0; j < floorf(statsVec.at(i) * 0.1f + 0.5f); ++j) cout << "* "; cout << " " << statsVec.at(i) << endl; } cout << endl; } // Damage function (improved) // total damage = base damage + extra damage; // base damage = enemy power points + weapon damage rates // Extra damage = 2.10999 * ( e ^ (3.87937 * attack count) - 1 ) int dmg(int powPoint, int wpnPoint, int shldPoint, int strikeCnt) { float incDmg = 0.0f; float c = 0.0f; int baseDmg = powPoint + wpnPoint; // By multiplying strikeCnt with 10 the range is expanded from 0 1 2 3 ... // to 0 10 20 30 ... to make it a bit larger to feed randGen function float minRange = (strikeCnt - 1) * 10.0f; float maxRange = strikeCnt * 10.0f; if (strikeCnt > 0) { /* Instead of calculating the extra damage values linearly, it's going to be fluctuated between an specific range. In fact, in this way, the program somehow simulates the enemy's attack effectiveness in each strike, as well. The process goes as follow: *1st attack isn't in the range as you see -> if (strikeCnt > 0) 2nd attack range is [0, 10] and after returning yields [0.00, 0.10] 3rd attack range is [10, 20] and after returning yields [0.10, 0.20] 4th attack range is [20, 30] and after returning yields [0.20, 0.30] ... */ c = randGen(minRange, maxRange) * 0.01f ; incDmg = extraDmg(c); } cout << "Attack #" << strikeCnt + 1 << " extra damage = " << incDmg << endl; shldPoint -= (baseDmg + incDmg); return shldPoint; } // Additioal damage function (exponential) float extraDmg(float c) { float addDmg = 2.10999f * ( expf(3.87937 * c) - 1.0f ); return addDmg; } // Simple random number generator int randGen(int min, int max) { return min + rand() % (max + 1 - min); }

Exponential damage system (Improved)