/// <summary>
/// Function to draw a spray on the screen.
/// </summary>
/// <param name="joystick">Joystick to use for the spray.</param>
/// <param name="index">Index of the joystick.</param>
private void DrawSpray(GorgonJoystick joystick, int index)
{
SprayCan state = _sprayStates[index];
// Update the origin of the spray.
state.Origin = _stickPosition[index];
// Find out if we're spraying.
if (joystick.Throttle > joystick.Capabilities.ThrottleAxisRange.Minimum)
{
if ((!state.IsActive) && (!state.NeedReset))
{
// Convert the throttle value to a unit value.
float throttleUnit = ((float)(joystick.Throttle - joystick.Capabilities.ThrottleAxisRange.Minimum) / joystick.Capabilities.ThrottleAxisRange.Range);
// Set up the spray state.
state.Position = state.Origin;
state.Amount = joystick.Capabilities.ThrottleAxisRange.Range / 2.0f;
state.Time = throttleUnit * 10.0f;
state.VibrationAmount = joystick.Capabilities.VibrationMotorRanges[1].Maximum;
state.SprayAlpha = (throttleUnit * 239.0f) + 16;
state.IsActive = true;
}
}
else
{
state.IsActive = false;
}
if (!state.IsActive)
{
return;
}
// Update the state spray effect.
state.Update();
_surface.DrawPoint(Point.Round(state.Position), state.SprayColor, state.SprayPointSize);
}
/// <summary>
/// Raises the <see cref="E:System.Windows.Forms.Form.Load" /> event.
/// </summary>
/// <param name="e">An <see cref="T:System.EventArgs" /> that contains the event data.</param>
protected override void OnLoad(EventArgs e)
{
base.OnLoad(e);
try
{
// Load the XInput plug-in assembly.
Gorgon.PlugIns.LoadPlugInAssembly(Program.PlugInPath + "Gorgon.Input.XInput.dll");
// Create our factory.
_factory = GorgonInputFactory.CreateInputFactory("GorgonLibrary.Input.GorgonXInputPlugIn");
// Ensure that we have and XBox controller to work with.
if (_factory.JoystickDevices.Count == 0)
{
GorgonDialogs.ErrorBox(this, "No XBox controllers were found on this system.\nThis example requires an XBox controller.");
Gorgon.Quit();
return;
}
// Enumerate the active joysticks. We'll only take 3 of the 4 available xbox controllers.
_joystick = new GorgonJoystick[3];
_stickPosition = new PointF[_joystick.Count];
_sprayStates = new SprayCan[_joystick.Count];
for (int i = 0; i < _joystick.Count; i++)
{
var joystick = _factory.CreateJoystick(this, _factory.JoystickDevices[i].Name);
// Set a dead zone on the joystick.
// A dead zone will stop input from the joystick until it reaches the outside
// of the specified coordinates.
joystick.DeadZone.X = new GorgonRange(joystick.Capabilities.XAxisRange.Minimum / 4, joystick.Capabilities.XAxisRange.Maximum / 4);
joystick.DeadZone.Y = new GorgonRange(joystick.Capabilities.YAxisRange.Minimum / 4, joystick.Capabilities.YAxisRange.Maximum / 4);
joystick.DeadZone.SecondaryX = new GorgonRange(joystick.Capabilities.XAxisRange.Minimum / 128, joystick.Capabilities.XAxisRange.Maximum / 128);
joystick.DeadZone.SecondaryY = new GorgonRange(joystick.Capabilities.YAxisRange.Minimum / 128, joystick.Capabilities.YAxisRange.Maximum / 128);
_joystick[i] = joystick;
// Start at a random spot.
_stickPosition[i] = new Point(GorgonRandom.RandomInt32(64, panelDisplay.ClientSize.Width - 64), GorgonRandom.RandomInt32(64, panelDisplay.ClientSize.Height - 64));
// Turn off spray for all controllers.
_sprayStates[i] = new SprayCan(joystick, i);
}
// Check for connected controllers.
while (!_joystick.Any(item => item.IsConnected))
{
if (MessageBox.Show(this,
"There are no XBox controllers connected.\nPlease plug in an XBox controller and click OK.",
"No Controllers", MessageBoxButtons.OKCancel, MessageBoxIcon.Warning) != DialogResult.Cancel)
{
continue;
}
Gorgon.Quit();
return;
}
// Get the graphics interface for our panel.
_surface = new DrawingSurface(panelDisplay);
// Set up our idle loop.
Gorgon.ApplicationIdleLoopMethod += Idle;
}
catch (Exception ex)
{
// We do this here instead of just calling the dialog because this
// function will send the exception to the Gorgon log file.
GorgonException.Catch(ex, () => GorgonDialogs.ErrorBox(this, ex));
Gorgon.Quit();
}
}
