public static void Main()
{
SDResourceLoader rsc = null;
Joystick = new AnalogJoystick(Pins.GPIO_PIN_A0, Pins.GPIO_PIN_A1);
// I'm being lazy here and using the default on-board switch instead of the actual joystick button :)
JoystickButton = new PushButton(pin: Pins.ONBOARD_SW1, target: new NativeEventHandler(ButtonEventHandler));
try {
// Load the resources from the SD card
// Place the content of the "SD Card Resources" folder at the root of an SD card
rsc = new SDResourceLoader();
rsc.Load(Pins.GPIO_PIN_D10);
}
catch (IOException) {
ShowNoSDPresent();
}
// Using the space invaders bitmap in this example
var Invaders = (Bitmap)rsc.Bitmaps["spaceinvaders.bmp.bin"];
rsc.Dispose();
var matrix = new LedMS88SR74HC595().Initialize();
while (true)
{
// Read the current direction of the joystick
X += (int)Joystick.XDirection;
Y += (int)Joystick.YDirection;
// Validate the position of the coordinates to prevent out-of-bound exceptions.
if (X < 0)
{
X = 0;
}
else if (X >= Invaders.Width - Bitmap.FrameSize)
{
X = Invaders.Width - Bitmap.FrameSize;
}
if (Y < 0)
{
Y = 0;
}
else if (Y >= Invaders.Height)
{
Y = Invaders.Height - 1;
}
Debug.Print("X=" + Joystick.X.ToString() + " (" + Joystick.XDirection.ToString() + ")" + ", Y=" + Joystick.Y.ToString() + " (" + Joystick.YDirection.ToString() + ")");
// move the bitmap according to the direction of the joystick
matrix.Set(Invaders.GetFrame(X, Y));
Thread.Sleep(80);
}
}
// Shows and SD icon on the matrix and wait for a reset
private static void ShowNoSDPresent()
{
// If the SD card is not present, show an SD card icon and wait for a reset...
using (var matrix = new LedMS88SR74HC595().Initialize())
{
var SD = new Bitmap(new byte[] { 0x7e, 0x42, 0x42, 0x42, 0x42, 0x42, 0x22, 0x1e }, 8, 8);
matrix.Set(SD.GetFrame(0, 0));
while (true)
{
Thread.Sleep(1000);
}
}
}