/* ID: Object Vector Part 2 By: Michael Simnitt. Date:5/26/17 Purpose: To further progress towards a game core design technique. My attempt here is to build an object factory that can handle massive amounts of entity addition and removals while keeping memory both in check and fast. The next part will randomize combat among items in the list in a player vs creature scenario. NOTE: I would like to Thank all those who shared code and knowledge across SoloLearn and the web. After searching dozens of sites this is a compilation of the many things I have learned from you. Please feel free to criticize and offer suggestions/help. DEBUG Usage: DEBUG shows debug text on objects output. Set to false to hide this. Mock Usage: (int,bool) @int # of objects to create/destroy , @ bool set debug mode for Mock. */ #include //cout, endl #include // operator typeid #include //vectors #include //srand() rand() #include // time() using namespace std; typedef unsigned long EntityId; EntityId idList(0); bool DEBUG = false; //component class - still needs work class Component { public: EntityId id; string type; Component(){ if (DEBUG) cout << "\nNEW Component: " << this << endl; } Component* getInfo(){ return this; } ~Component(){ if(DEBUG) cout << "Component Destroyed " << this << " " << id << " " << type << endl; } }; static vector OBJ; //create a vector for object storage //objects class - still needs work class object:public Component{ public: object(){ id = idList++; OBJ.push_back(this); //store this object address inside the vector @ end if (DEBUG) cout << "New Object: " << this << endl; } }; // WpSys- Way-point system class class WpSys{ public: int x; int y; int z; int layer; }; //Equip- Equipment for creatures/players class Equip{ public: int armor; int weapon; }; class Mobile : public object, public WpSys, public Equip { }; //creature- base for creature types class Creature : public Mobile { public: Creature(){ type = 2+typeid(this).name(); armor = 5+rand()%10; weapon = 10+rand()%5; if (DEBUG) cout << "New Creature: " << this << endl; } }; //Player- base for all players class Player : public Mobile { public: Player(){ type = 2+typeid(this).name(); armor = 10+rand()%5; weapon = 5+rand()%10; if(DEBUG) cout << "New Player: " << this << endl; } }; //handle object destructions TODO: move to deconstructor void destroy(int id){ if (DEBUG) cout << "\ndestroying ID: " << id << endl; delete &(*OBJ[id]); OBJ.erase(OBJ.begin()+id); } //print- Output the object list void print(){ cout << "\nObject List" << endl; Component*obj(0); for(int n = 0 ; n < OBJ.size(); n++){ cout << "id: " << n << "\t->" << OBJ[n]->type << " "; if(DEBUG) cout << "Mem: " << OBJ[n]->getInfo() << " UID: " << OBJ[n]->id; cout << endl; } } //Mock- Used to simulate object creation and deletion void Mock(int cycles, bool debug){ cout << "\n MOCK START:"; bool debugPrev = DEBUG; DEBUG = debug; cout << "\nMock params-> DebugMode:" << DEBUG << " Cycles:" << cycles << endl; Player*player(0); Creature*creature(0); int createdP(0); int createdC(0); int deleted(0); for(int n(0); n < cycles; n++){ int rnd = (1+rand()%3 ); switch(rnd){ case 1: player = new Player; ++createdP; break; case 2: creature = new Creature; ++createdC; break; case 3: { //case 3 (destroy random object in list) if (OBJ.size() < 1){ //make sure list has objects --n; break;} else{ //pick random object and destroy it int target = (rand()%OBJ.size()); ++deleted; destroy(target); break; } } } } // output: # of players created, # of creatures created, # of objects destroyed cout << "\n\nPlayers: " << createdP << " Creatures: " << createdC << " Erased " << deleted << endl; cout << endl; DEBUG = debugPrev; } int main() { cout << std::boolalpha << endl; //turn on bool alpha text srand(time(0)); //Set random seed to system time cout << "Using Mock we can see the effects on the table" << endl; Mock(50,false); //Mock player/creature addition/deletion DEBUG = true; //turn on DEBUG for printing the list print(); //print table of objects cout << "\nCombat Coming Soon.."; return 0; }

Object Vector Pt 3