Thread: Tripple crash program

Alright, on startup the program run Init() which has the following relevant code:

Code:

for(int y = 0; y < BOARD_HEIGHT; y++)
{
	for(int x = 0; x < BOARD_WIDTH; x++)
	{
		//Do a switch on the value of the current index
		// Since we are using a 1D array, we use the equation:
		// x + y * BOARD_WIDTH  - This allows us to treat it like a 2D array
		switch( g_BoardArray[ screen[1]+y+TEST ][ x + screen[0] ] )
		{
			case W01:
				g_bmpTiles[x][y] = LoadABitmap("WA01.bmp");
				break;
			case W02:
				g_bmpTiles[x][y] = LoadABitmap("WA02.bmp");
				break;
			case F01:
				g_bmpTiles[x][y] = LoadABitmap("FL01.bmp");
				break;
		}
	}
}

This code I run once, I found that out the hardway (I'm using gametutorials tilemaze and modifying it to scroll in-case you wanted to know. In WinMain():

Code:

for(int y = 0; y < BOARD_HEIGHT; y++)
{
	for(int x = 0; x < BOARD_WIDTH; x++)
	{
		// Display each title according to their index.
		// We take the x and y index and times it by the width and height
		// in pixels to get the tile position. This makes the nice tile effect we see on screen  
		DisplayBitmap(&g_Buffer, g_bmpTiles[x][y], TILE_WIDTH * x, TILE_WIDTH * y);  
	}
}

Now this works all fine and dandy IF you want the images to stay the same, (remember how init was run once?) anyway, to be able to scroll I put that loop from Init() into winmain (right before the DisplayBitmap loop, but this caused crashing, so I merged the two loops into one:

Code:

for(int y = 0; y < BOARD_HEIGHT; y++)
{
	for(int x = 0; x < BOARD_WIDTH; x++)
	{
		g_bmpTiles[x][y] = 0;
		//Do a switch on the value of the current index
		// Since we are using a 1D array, we use the equation:
		// x + y * BOARD_WIDTH  - This allows us to treat it like a 2D array
		
		switch( g_BoardArray[ screen[1]+y ][ x + screen[0] ] )
		{
			case W01:
				DisplayBitmap(&g_Buffer, LoadABitmap("WA01.bmp"), TILE_WIDTH * x, TILE_WIDTH * y);
				break;
			case W02:
				DisplayBitmap(&g_Buffer, LoadABitmap("WA02.bmp"), TILE_WIDTH * x, TILE_WIDTH * y);
				break;
			case F01:
				DisplayBitmap(&g_Buffer, LoadABitmap("FL01.bmp"), TILE_WIDTH * x, TILE_WIDTH * y);
				break;
		} 
	}
}

But this still caused errors, note: all three arrays screen[], g_BoardArray[] and g_bmpTiles[] are global variables.