private function CreateMinimap():void
{
	// create a buffer the same size as your game world
	// fill it with nothing (0% alpha and no pixels drawn on it)
	minimapDisplay = new BitmapData(WORLD_WIDTH, WORLD_HEIGHT, true, 0x00000000);

	// loop over the game world exploration grid
	var gh:Number = Global.exploredMap.rows;
	var gw:Number = Global.exploredMap.columns;

	for (var gy:Number = 0; gy < gh; gy++)
	{
		for (var gx:Number = 0; gx < gw; gx++)
		{
			// if the tile has been explored, draw it on the minimapDisplay
			if (Global.exploredMap.getCell(gx, gy))
			{
				// draw a cyan 100% alpha pixel to show that we have explored this tile
				minimapDisplay.setPixel32(gx, gy, 0xFF00FFFF);
			}
		}
	}
}