public override void Draw(GameTime gameTime, Frame frame) {
ClearBatch.AddNew(frame, 4, Color.Black, Materials.Clear);
using (var gb = GeometryBatch<VertexPositionColor>.New(frame, 5, Materials.ScreenSpaceGeometry)) {
gb.AddGradientFilledQuad(
Vector2.Zero, new Vector2(Graphics.PreferredBackBufferWidth, Graphics.PreferredBackBufferHeight),
Color.DarkSlateGray, Color.DarkSlateGray,
Color.SlateBlue, Color.SlateBlue
);
}
using (var gb = GeometryBatch<VertexPositionColor>.New(frame, 6, Materials.ScreenSpaceGeometry)) {
var alphaBlack = new Color(0, 0, 0, 192);
var alphaBlack2 = new Color(0, 0, 0, 64);
gb.AddQuadBorder(
Playfield.Bounds.TopLeft + new Vector2(32 + 24, 0),
Playfield.Bounds.BottomRight + new Vector2(-32 - 24, 0),
alphaBlack2, alphaBlack, 24
);
}
// Render the contents of the trail buffer to the screen using additive blending
using (var bb = BitmapBatch.New(frame, 7, Materials.Trail)) {
bb.Add(new BitmapDrawCall(
TrailBuffer, Vector2.Zero, (float)TrailScale
));
}
// Render the paddles and ball to both the framebuffer and the trail buffer (note the different layer values)
using (var gb = GeometryBatch<VertexPositionColor>.New(frame, 8, Materials.ScreenSpaceGeometry))
using (var trailBatch = GeometryBatch<VertexPositionColor>.New(frame, 2, Materials.ScreenSpaceGeometry)) {
foreach (var paddle in Paddles) {
gb.AddFilledQuad(
paddle.Bounds.TopLeft, paddle.Bounds.BottomRight, Color.White
);
gb.AddQuadBorder(
paddle.Bounds.TopLeft, paddle.Bounds.BottomRight, Color.Black, Color.Black, 2.25f
);
trailBatch.AddFilledQuad(
paddle.Bounds.TopLeft, paddle.Bounds.BottomRight, Color.White
);
}
gb.AddFilledRing(Ball.Position, 0.0f, Ball.Radius, Color.White, Color.White);
gb.AddFilledRing(Ball.Position, Ball.Radius, Ball.Radius + 2.0f, Color.Black, Color.Black);
trailBatch.AddFilledRing(Ball.Position, 0.0f, Ball.Radius, Color.White, Color.White);
}
// Render the score values using a stringbatch (unfortunately this uses spritebatch to render spritefonts :( )
using (var sb = StringBatch.New(frame, 9, Materials.ScreenSpaceBitmap, SpriteBatch, Font)) {
var drawCall = new StringDrawCall(
String.Format("Player 1: {0:00}", Scores[0]),
new Vector2(16, 16),
Color.White
);
sb.Add(drawCall.Shadow(Color.Black, 1));
sb.Add(drawCall);
drawCall.Text = String.Format("Player 2: {0:00}", Scores[1]);
drawCall.Position.X = Graphics.PreferredBackBufferWidth - 16 - sb.Measure(ref drawCall).X;
sb.Add(drawCall.Shadow(Color.Black, 1));
sb.Add(drawCall);
}
// The first stage of our frame involves selecting the trail buffer as our render target (note that it's layer 0)
SetRenderTargetBatch.AddNew(frame, 0, TrailBuffer);
if (FirstFrame) {
// If it's the first time we've rendered, we erase the trail buffer since it could contain anything
ClearBatch.AddNew(frame, 1, Color.Black, Materials.Clear);
FirstFrame = false;
} else {
// Otherwise, we fade out the contents of the trail buffer
using (var gb = GeometryBatch<VertexPositionColor>.New(frame, 1, Materials.SubtractiveGeometry)) {
gb.AddFilledQuad(
new Bounds(Vector2.Zero, new Vector2(Graphics.PreferredBackBufferWidth, Graphics.PreferredBackBufferHeight)),
new Color(12, 12, 12)
);
}
}
// After the trail buffer has been updated, we turn it off and begin rendering to the framebuffer. Note layer 3.
SetRenderTargetBatch.AddNew(frame, 3, null);
}
private void DrawHud (Frame frame) {
Rectangle titleSafeArea = GraphicsDevice.Viewport.TitleSafeArea;
Vector2 hudLocation = new Vector2(titleSafeArea.X, titleSafeArea.Y);
Vector2 center = new Vector2(titleSafeArea.X + titleSafeArea.Width / 2.0f,
titleSafeArea.Y + titleSafeArea.Height / 2.0f);
// Draw time remaining. Uses modulo division to cause blinking when the
// player is running out of time.
string timeString = "TIME: " + level.TimeRemaining.Minutes.ToString("00") + ":" + level.TimeRemaining.Seconds.ToString("00");
Color timeColor;
if (level.TimeRemaining > WarningTime ||
level.ReachedExit ||
(int)level.TimeRemaining.TotalSeconds % 2 == 0) {
timeColor = Color.Yellow;
} else {
timeColor = Color.Red;
}
using (var bb = BitmapBatch.New(frame, 100, materials.ScreenSpaceBitmap))
using (var sb = StringBatch.New(frame, 100, materials.ScreenSpaceBitmap, spriteBatch, this.hudFont)) {
var sdc = new StringDrawCall(
timeString, hudLocation, timeColor
);
sb.Add(sdc.Shadow(Color.Black, 1.0f));
sb.Add(sdc);
// Draw score
float timeHeight = hudFont.MeasureString(timeString).Y;
sdc.Text = "SCORE: " + level.Score.ToString();
sdc.Position += new Vector2(0.0f, timeHeight * 1.2f);
sdc.Color = Color.Yellow;
sb.Add(sdc.Shadow(Color.Black, 1.0f));
sb.Add(sdc);
// Determine the status overlay message to show.
Texture2D status = null;
if (level.TimeRemaining == TimeSpan.Zero) {
if (level.ReachedExit) {
status = winOverlay;
} else {
status = loseOverlay;
}
} else if (!level.Player.IsAlive) {
status = diedOverlay;
}
if (status != null) {
// Draw status message.
Vector2 statusSize = new Vector2(status.Width, status.Height);
bb.Add(new BitmapDrawCall(status, center - statusSize / 2));
}
}
}
