/// <summary>
/// When the device is loaded for the first time or when it resets come here to check
/// the caps of the device for lighting and set up the Projection and view.
/// </summary>
/// <param name="sender">Device</param>
/// <param name="e">usally null, either way we dont care about it.</param>
private void OnDeviceReset(object sender, EventArgs e)
{
device.Transform.Projection = Matrix.PerspectiveFovLH((float)Math.PI / 4, (float)this.Width / (float)this.Height, 1.0f, 1000.0f);
device.Transform.View = Matrix.LookAtLH(new Vector3(0.0f, 9.5f, 17.0f), new Vector3(), new Vector3(0, 1, 0));
//try to set up a texture minify filter, pick anisotropic first
if (device.DeviceCaps.TextureFilterCaps.SupportsMinifyAnisotropic)
{
device.SamplerState[0].MinFilter = TextureFilter.Anisotropic;
}
else if (device.DeviceCaps.TextureFilterCaps.SupportsMinifyLinear)
{
device.SamplerState[0].MinFilter = TextureFilter.Linear;
}
//do the same thing for magnify filter
if (device.DeviceCaps.TextureFilterCaps.SupportsMagnifyAnisotropic)
{
device.SamplerState[0].MagFilter = TextureFilter.Anisotropic;
}
else if (device.DeviceCaps.TextureFilterCaps.SupportsMagnifyLinear)
{
device.SamplerState[0].MagFilter = TextureFilter.Linear;
}
//Do we have enough support for lights?
if ((device.DeviceCaps.VertexProcessingCaps.SupportsDirectionalLights) && (device.DeviceCaps.MaxActiveLights > 1))
{
//first light
device.Lights[0].Type = LightType.Directional;
device.Lights[0].Diffuse = Color.White;
device.Lights[0].Direction = new Vector3(1, -1, -1);
device.Lights[0].Enabled = true;
//second light
device.Lights[1].Type = LightType.Directional;
device.Lights[1].Diffuse = Color.White;
device.Lights[1].Direction = new Vector3(-1, 1, -1);
device.Lights[1].Enabled = true;
}
else
{
//no light support, just use ambient lighting.
device.RenderState.Ambient = Color.White;
}
roadMesh = LoadMesh(device, @"..\..\road.x", ref roadMaterials, ref roadTextures);
//create teh car
car = new Car(device);
//create the obstacles
obstacles = new Obstacles();
}
private void OnFrameUpdate()
{
if ((isGameOver) || (!hasGameStarted))
{
return;
}
// First, get the elapsed time
elapsedTime = Utility.Timer(DirectXTimer.GetElapsedTime);
RoadDepth0 += (RoadSpeed * elapsedTime);
RoadDepth1 += (RoadSpeed * elapsedTime);
// We have two "roads" here a top and bottom, check to see where they are located and if
//they exceed their bounds, then swap them.
if (RoadDepth0 > 75.0f)
{
RoadDepth0 = RoadDepth1 - 100.0f;
AddObstacles(RoadDepth0);
}
if (RoadDepth1 > 75.0f)
{
RoadDepth1 = RoadDepth0 - 100.0f;
AddObstacles(RoadDepth1);
}
// Remove any obstacles that are past the car
// Increase the score for each one, and also increase
// the road speed to make the game harder.
Obstacles removeObstacles = new Obstacles();
foreach (Obstacle o in obstacles)
{
if (o.Depth > car.Diameter - (Car.Depth * 2))
{
// Add this obstacle to our list to remove
removeObstacles.Add(o);
// Increase roadspeed
RoadSpeed += RoadSpeedIncrement;
// Make sure the road speed stays below max
if (RoadSpeed >= MaximumRoadSpeed)
{
RoadSpeed = MaximumRoadSpeed;
}
// Increase the car speed as well
car.IncrementSpeed();
// Add the new score
score += (int)(RoadSpeed * (RoadSpeed / car.Speed));
}
}
// Remove the obstacles in the list
foreach (Obstacle o in removeObstacles)
{
obstacles.Remove(o);
// May as well dispose it as well
o.Dispose();
}
removeObstacles.Clear();
// Move our obstacles
foreach (Obstacle o in obstacles)
{
// Update the obstacle, check to see if it hits the car
o.Update(elapsedTime, RoadSpeed);
if (o.IsHittingCar(car.Location, car.Diameter))
{
// If it does hit the car, the game is over.
isGameOver = true;
gameOverTick = System.Environment.TickCount;
// Stop our timer
Utility.Timer(DirectXTimer.Stop);
// Check to see if we want to add this to our high scores list
CheckHighScore();
}
}
car.Update(elapsedTime);
}