fardell34: Google + Content reposting Feb 22 2015

Digital and Interactive Games 2015 – Week 2, Session 2

void Infantry

putItem (slotNumber, GameObject) {

Inventory myInventory;
   myInventory.putItem(1, anAxe);
   myInventory.putItem(2, myFood);

void Inventory::putItem(slotNumber, GameItem) {
   switch(slotNumber) {
       case 1:
           slot1 = theItem;
           break;
       case 2:
           slot2 = theItem;
           break;
       etc
   }
}

put Item (slotNumber, GameObject) {
   switch (slotNumber) {
       case 1:
           break
   }
}

GameItem Inventory::takeItem (int, slotNumber) {
   return;
}

GameItem takeItem(int slotNumber)

   return slot1;

GameItem Inventory::takeItem (int slotNumber)
   if (slotNumber == 1)
       return slot1;
}

How to check if the slot is taken.

…

Inventory.h
public:
   Inventory();
   ~Inventory();
   void putItem (int, gameItem);
   GameItem takeItem(int);
   bool isEmptySlot;

Inventory.cpp
bool Inventory::isEmptySlot (int, slotNumber) {
   if (slotNumber == 1) {
       slot1
       return;
   }
}

GameItem.h
class GameItem
   string itemType;
   int itemAmount;
   bool bIsEmpty { true };
public:
   GameItem();
   ~GameItem();
   void setItemType(int);
   string getItemType();
   bool isEmpty();
};

…
GameItem myWeapon;
–   myWeapon.setItemType(2);
…
GameItem.cppp

bIsEmpty = false;
   switch (ItemTypeNumber) {

string GameItem::getItemType() {
   return ItemType;

bool GameItem::isEmpty() {
   return bIsEmpty;
}

Inventory.cpp
bool Inventory::isEmptySlot (int slotNumber) {
   bool bEmpty { false };
   if (slotNumber == 1) {
       bEmpty = slot1, isEmpty())
   }
   return bEmpty;
}

C++ Primer – Chapter 3

New Project – stringExperiment

int main() {
   string firstString;

   return 0;
}

string from C++ Standard Library
–   not the string from C

using std::string
using std::cout

int main() {
   string firstString; // default initialisation

   cout << firstString

   system(“pause”)
   return 0;
}

String can be seen as characters

<code>

#include <iostream>
#include <string>
using std::string;
using std::cin;
using std::cout;
using std::endl;

int main() {
   string firstString; // default initialisation
   string secondString { “This is a string” };
   string thirdString [10, '#'];

   cout << firstString << endl;
   cout << secondString << endl;
   cout << thirdString << endl;

   cin >> firstString;
   while (std::getline(cin, firstString)) {
       if (firstString = “exit”) break;
       if (!firstString.empty()) {
           cout << firstString << endl;
           for (auto c: firstString ) {
               // cout << c << “ ” << endl;
               c = toupper(c);
               cout << c;
           }

           cout << “Command ”;
       }

           cout << firstString << endl;
       cout << “Command: “;
   }

   system(“pause”);
   return 0;
}
</code>

Size of string
(below for loop)

cout << endl;
cout << firstString.size() << endl;

Vector

New Project – Vector experiment

Not a type.
–   It's a class template.

#include <iostream>
#include <vector>
using std::vector;

int main () {
   return 0;
}

Not a type
We need to supply a type.

Int main () {
   vector <int> first vector:

   return 0;
}

firstVector → Nothing, it's pointing to nothing.

Vector <int> firstVector;
firstVector.push_back(10);

The integer is pushed to the back of the vector

firstVector.push_back(10);
firstVector.push_back(5);

using std::vector
using std::cout
using std::endl;

int main() {
   vector <int> firstVector;
   firstVector.push_back(10)
   firstVector.push_back(5);

   cout << firstVector[0] << endl;

   return 0;
}

cout << firstVector[0] << endl;

for (auto anInt; firstVector) {
   cout << anInt << endl;
}

Vector – one of the most efficient tools in C++

(for loop)

vector <int> slotAmount { 0, 0, 0, 0, 0, 0, 0, 0 };

More ways to initialise vector

vector <int> slotAmount { 0, 0, 0, 0, 0 , 0, 0, 0 }'
vector <int> slotAmount2 (8, 0);

cout << slotAmount, size() << endl;

…
Reopen GameItem

Inventory.h

#define INVENTORY_H
#include <vector>
#include “GameItem.h”

class Inventory() {
   std::vector <GameItem> slotItem;

}

Inventory.cpp

Inventory::Inventory()
{
   GameItem anItem;
   slotItem.push_back(anItem);
}

…
for loop
GameItem anItem;
for (auto i = 0; i != 0; i++)
   slot.push_back(anItem);
…

// put an item into a slot
// slot number from 1 – 7
void Inventory::putItem(int slotNumber, GameItem) {
   slotItem[slotNumber] = theItem;
}

bool Inventory::isEmptySlot(int slotNumber) {
   return slotItem[slotNumber].isEmpty();
}

main.cpp

#include “hero.h”
#include “Inventory.h”

int main() {
   Inventory myInventory();
   return 0;
}

myInventory.putItem(0, anItem);

Inventory.cpp

#include <iostream>

voidInventory::putItem(int slotNumber, GameItem) {
   std::cout << “putting ”;
   std::cout << theItem.getItemType();
   std::cout << “ into slot ”;
   std::cout << slotNumber”
   std::cout << std::endl;
   slotItem[slotNumber] = theItem;

Should be commented out in production version.

Main.cpp

anItem.getItemType(2);
myInventory.putItem(1, anItem);

#cplusplus #gamedesign #gameprogramming #programming #tafe

fardell34

Wednesday 28 November 2018

Google + Content reposting Feb 22 2015

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