protected override void Draw(GameTime time)
{
this.Graphics.Clear(Color4.Black);
this.spriteRenderer.Begin(this.shaderProgram);
string text = string.Format("FPS: {0}", fps);
Size textSize = this.font.MeasureString(text);
int halfWindowWidth = this.Window.Width / 2;
int halfWindowHeight = this.Window.Height / 2;
int halfTextWidth = textSize.Width / 2;
int halfTextHeight = textSize.Height / 2;
this.spriteRenderer.DrawString(
this.font,
text,
new Rectangle(halfWindowWidth - halfTextWidth, halfWindowHeight - halfTextHeight, textSize.Width, textSize.Height),
tint: Color4.CornflowerBlue,
origin: new Vector2(halfTextWidth, halfTextHeight),
rotation: MathHelper.ToRadians(45.0f),
layerDepth: 0.5f);
foreach (Plane plane in this.planes)
{
this.spriteRenderer.Draw(
this.planeSpriteSheet,
plane.StartFrame + plane.FrameOffset,
plane.Position,
origin: new Vector2(32, 32),
rotation: MathHelper.ToRadians(plane.Rotation)
);
}
this.spriteRenderer.End();
this.Graphics.SwapBuffers();
this.fpsCount++;
this.fpsTimer += (float)time.ElapsedTime.TotalSeconds;
if (this.fpsTimer >= 1.0f)
{
this.fps = this.fpsCount;
this.fpsTimer -= 1.0f;
this.fpsCount = 0;
}
}
protected override void Draw(GameTime elapsed)
{
this.Graphics.Clear(Color4.CornflowerBlue);
Matrix4 projection = Matrix4.InvertedYAxis;
this.shaderProgram.SetValue("projection", ref projection);
this.shaderProgram.SetValue("palette", this.palette);
this.shaderProgram.SetValue("centerX", this.centerX);
this.shaderProgram.SetValue("centerY", this.centerY);
this.shaderProgram.SetValue("scale", this.scale);
this.shaderProgram.SetValue("iterations", this.iterations);
this.Graphics.Draw(PrimitiveType.Triangles, this.vertexBuffer);
this.Graphics.SwapBuffers();
}
public void Update(GameTime time)
{
this.frameTimer += time.ElapsedTime;
if (this.frameTimer >= FrameDuration)
{
this.FrameOffset++;
this.frameTimer -= FrameDuration;
if (this.FrameOffset >= FrameCount)
this.FrameOffset -= FrameCount;
}
Vector2 position = this.Position;
Vector2 newPosition = new Vector2(position.X, position.Y - ((float)time.ElapsedTime.TotalSeconds * Speed));
RotateAboutOrigin(ref newPosition, ref position, MathHelper.ToRadians(this.Rotation), out newPosition);
if (newPosition.X < -HalfSize)
{
newPosition.X += this.windowSize.Width + Size;
}
else if (newPosition.X >= this.windowSize.Width + HalfSize)
{
newPosition.X -= this.windowSize.Width + Size;
}
if (newPosition.Y < -HalfSize)
{
newPosition.Y += this.windowSize.Height + Size;
}
else if (newPosition.Y >= this.windowSize.Height + HalfSize)
{
newPosition.Y -= this.windowSize.Height + Size;
}
this.Position = newPosition;
}
protected override void Update(GameTime gameTime)
{
if (this.keyboard.IsKeyDown(Key.Left))
this.centerX -= (2f * this.scale) * (float)gameTime.ElapsedTime.TotalSeconds;
if (this.keyboard.IsKeyDown(Key.Right))
this.centerX += (2f * this.scale) * (float)gameTime.ElapsedTime.TotalSeconds;
if (this.keyboard.IsKeyDown(Key.Up))
this.centerY -= (2f * this.scale) * (float)gameTime.ElapsedTime.TotalSeconds;
if (this.keyboard.IsKeyDown(Key.Down))
this.centerY += (2f * this.scale) * (float)gameTime.ElapsedTime.TotalSeconds;
if (this.keyboard.IsKeyDown(Key.A))
this.scale -= 0.5f * (float)gameTime.ElapsedTime.TotalSeconds;
if (this.keyboard.IsKeyDown(Key.Z))
this.scale += 0.5f * (float)gameTime.ElapsedTime.TotalSeconds;
if (this.keyboard.IsKeyDown(Key.Q))
this.iterations -= 10.0f * (float)gameTime.ElapsedTime.TotalSeconds;
if (this.keyboard.IsKeyDown(Key.W))
this.iterations += 10.0f * (float)gameTime.ElapsedTime.TotalSeconds;
this.keyboard.Update();
}
protected override void Update(GameTime time)
{
foreach (Plane plane in this.planes)
{
plane.Update(time);
}
}
/// <summary>
/// Called by the Run method when game logic should run.
/// </summary>
/// <param name="time"></param>
protected virtual void Update(GameTime time)
{
}
/// <summary>
/// Called by the Run method when the game should draw.
/// </summary>
/// <param name="time"></param>
protected virtual void Draw(GameTime time)
{
}
/// <summary>
/// Starts the game loop.
/// </summary>
public void Run()
{
this.Window.Show();
this.Initialize();
this.time = new GameTime();
this.stopwatch = new Stopwatch();
this.timeBetweenTicks = 1000 / this.options.FramesPerSecond;
this.stopwatch.Start();
long elapsed = stopwatch.ElapsedMilliseconds;
this.lastTick = elapsed;
this.nextTick = elapsed;
this.Window.Run();
this.Shutdown();
}
protected override void Draw(GameTime gameTime)
{
this.Graphics.Clear();
this.Graphics.Draw(PrimitiveType.Triangles, this.vertexBuffer);
this.Graphics.SwapBuffers();
}
protected override void Draw(GameTime time)
{
this.Graphics.Clear(Color4.CornflowerBlue);
Matrix4 projection = new Matrix4()
{
M11 = 2f / this.Window.Width,
M22 = -2f / this.Window.Height,
M33 = 1f,
M44 = 1f,
M41 = -1f,
M42 = 1f
};
totalElapsedSeconds += (float)time.ElapsedTime.TotalSeconds;
this.shader.SetValue("projection", ref projection);
this.shader.SetValue("startX", (float)((this.Window.Width - this.texture.Width) / 2));
this.shader.SetValue("time", totalElapsedSeconds);
this.shader.SetValue("texture0", this.texture);
this.Graphics.Draw(PrimitiveType.Triangles, this.vertexBuffer, this.indexBuffer);
this.Graphics.SwapBuffers();
}
