Strange display with objects (level manager)

Hello,

I want to create a level manager, but i have an error.

In ZlatkoLevelManager.cpp :

#include "ZlatkoLevelManager.h"

ZlatkoLevelManager::ZlatkoLevelManager() :
  listOfLevel(new ZlatkoLinkedList<ZlatkoLevel *>())
{

}

void ZlatkoLevelManager::addLevel(ZlatkoLevel * aLevel) {
  listOfLevel->addBottom(aLevel);
}

ZlatkoLinkedList<ZlatkoLevel *> * ZlatkoLevelManager::getLevels() const {
  return listOfLevel;
}

I create the levels in MapBuilder.cpp :

#include "MapBuilder.h"

void MapBuilder::build(ZlatkoLevelManager * levelManager) {
  // Niveau 1
  const int heightMap1 = 20;
  const int widthMap1 = 30;
  const char map1[heightMap1][widthMap1] = {
    /* ... */
  };
  ZlatkoMatrix<char> * matrix1 = new ZlatkoMatrix<char>(widthMap1, heightMap1);
  for(int y = 0 ; y < heightMap1 ; y++) {
    for(int x = 0 ; x < widthMap1 ; x++) {
      matrix1->setCell(x, y, map1[y][x]);
    }
  }
  ZlatkoLevel * lvl1 = new ZlatkoLevel(LVL_1, "Niveau 1", matrix1, false);
  levelManager->addLevel(lvl1);

  // Niveau 2
  const int heightMap2 = 40;
  const int widthMap2 = 60;
  const char map2[heightMap2][widthMap2] = {
    /* ... */
  };
  ZlatkoMatrix<char> * matrix2 = new ZlatkoMatrix<char>(widthMap2, heightMap2);
  for(int y = 0 ; y < heightMap2 ; y++) {
    for(int x = 0 ; x < widthMap2 ; x++) {
      matrix2->setCell(x, y, map2[y][x]);
    }
  }
  ZlatkoLevel * lvl2 = new ZlatkoLevel(LVL_2, "Niveau 2", matrix2, true);
  levelManager->addLevel(lvl2);
}

I show UI of level manager in ZlatkoLevelsView.cpp :

#include "ZlatkoLevelsView.h"

ZlatkoLevelsView::ZlatkoLevelsView(ZlatkoLevelManager * aLevelManager) :
  levelManager(aLevelManager)
{
  if(!levelManager->getLevels()->isEmpty()) {
    currentLevel = levelManager->getLevels()->getFirstItem();
  }
}

void ZlatkoLevelsView::paint() const {
  gb.display.setColor(WHITE);
  if(levelManager->getLevels()->isEmpty()) {
    gb.display.print("Aucun niveau");
  } else {
    if(currentLevel->havePrevious()) {
      gb.display.print("< ");
    } else {
      gb.display.print("  ");
    }
    if(currentLevel->haveNext()) {
      gb.display.print(" >");
    }
    gb.display.println("");

    char * labelCurrentLevel = currentLevel->getValue()->getLabel();
    /*gb.display.print("[");
    gb.display.printf("%s", "?");
    gb.display.print("]");*/
    //gb.display.printf("%s", labelCurrentLevel);
    gb.display.print(labelCurrentLevel);
    //gb.display.print(currentLevel->getValue()->getlabel());
    ZlatkoMatrix<char> * mapModel = currentLevel->getValue()->getMap();
    gb.display.println("");
    //gb.display.print(mapModel->getWidth());
    //gb.display.printf("%d x %d", mapModel->getWidth(), mapModel->getHeight());

    /*char * test = "Hello";
    gb.display.println("");
    gb.display.print(test);*/

    gb.display.println("");
    gb.display.print(levelManager->getLevels()->getSize());
  }
}

void ZlatkoLevelsView::manageCommands() {
  if(!levelManager->getLevels()->isEmpty()) {
    if(currentLevel->havePrevious() && gb.buttons.pressed(BUTTON_LEFT)) {
      currentLevel = currentLevel->getPrevious();
    }
    if(currentLevel->haveNext() && gb.buttons.pressed(BUTTON_RIGHT)) {
      currentLevel = currentLevel->getNext();
    }
  }
}

I intialize the all objects in setup function (in ZlatkoEngine::initialize), and show the level manager in the loop function.

When i show the information for the first level :

- to show the name : then the show strange name ;

- to show the size of map : then the game crash ;

- i can't make it : to show the arrow who indicate the previous/next level... but i know that there are two levels becausse i show the number of levels.

Have you an idea, why i have the previous errors ?

All the source code is on GitHub here.