DirectX - Issue with tiles on a 2D map.

Hi,

I am a starting to learn to code with DirectX in C++, and have hit a bug for which I am unable to find a solution.

In this part of my code, I am attempting to fill a vector of objects (models with x,y,z positions, rotations and scaling) to create a 2D map of square tiles (First block of code).

Once these have been put in the vector, I call a loop to render the objects one by one.

After using the debugger, I can assure you that the X and Y values are correct at the rendering stage, and that all tiles have a pointer to their respective model.

In order to try to debug this problem, I have added a piece of code to make it so that squares with even X values are stones, and squares with odd X values are grass.

In the image #1, I have changed the values of my loop so that the map tiles X and Y values have an interval of [-4,3].

In the image #2, I have changed the values of my loop so that the map tiles X and Y values have an interval of [-3,3].

I have also tried increasing the jump in my loops so that they increase by 2 each time, but it didn't fix the issue.

Looking at this problem, I can only think that I am missing a key piece of information about DirectX that is causing this bug.

Thank you for your time.

EDIT:

In the event that somebody would like to have a look at the full code, my project is on Github. 

The crucial pieces of information are (I think) in the WorldClass Initialize() function, or in the GraphicsClass Render() function.

https://github.com/Zilmerx/GameProjectFinal

Code #1 :

	// Test #2.
        for (int y = -3; y <= 3; y++) // -3 to 3, 7 values.
	{
		for (int x = -3; x <= 3; x++) // -3 to 3, 7 values.
		{
			std::unique_ptr<ObjectClass> obj;
			if (x % 2 == 0) // Is Even
			{
				obj = std::make_unique<ObjectClass>(model1);
			}
			else            // Is Odd
			{
				obj = std::make_unique<ObjectClass>(model2);
			}

			obj->SetPosition(x, y);

			obj->Initialize();

			m_Map.push_back(std::move(obj));
		}
	}

Image #1

Image #2