Global Variables

From IrrWizard

Global Variables

The GameManager can be used to declare or hold Global variables used for passing values accross states. For example the amount of enemies killed during a level might be required on a summary or level complete screen, (seperate states).

pManager->setGlobalString("nameString" , "text here");
pManager->setGlobalInt("nameInt", 100);

Local Variables

Variables can be defined and used at a Game Obect level, these are local variables. Everything that is subclasses from IGameEntity, (which should be prety much every game object), will have access to these user deined variables:

pItem->setGlobalString("nameString" , "text here");
pItem->setGlobalInt("nameInt", 100);

Example code

//! Set global variables to be used in Score State
void CGameStateLevel01::setGlobalVariables(CGameManager* pManager)
{
     // Get a list of enemies from the EnemyManager
     irr::core::array<CGameEnemy*> enemies = pManager->getEnemyManager()->GetEntityList();
     for (u32 i=0; i < enemies.size(); i++) 
     {
       // convert int to std::string  
       ostringstream myStream; 
       myStream << i << flush;
       std::string num = myStream.str(); 
       pManager->setGlobalString("enemy_name" + num, enemies[i]->getName());
       pManager->setGlobalInt("enemy_score" + num, enemies[i]->getKills());
     }
}