/// <summary>
/// Draws the gameplay screen.
/// </summary>
public override void Draw(GameTime gameTime)
{
// This game has a blue background. Why? Because!
ScreenManager.GraphicsDevice.Clear(ClearOptions.Target, Color.Black, 0, 0);
// Our player and enemy are both actually just text strings.
var spriteBatch = ScreenManager.SpriteBatch;
spriteBatch.Begin();
//Draw Player Ship here
_mPlayerShipSprite.Draw(spriteBatch);
//draw Boss test sprite
_mBossTestSprite.Draw(spriteBatch);
if (_mPlayerShipSprite.IsHit) // Change the background to red when the player is hit by an enemy projectile
{
ScreenManager.GraphicsDevice.Clear(Color.DarkRed);
}
else if (_mBossTestSprite.IsHit) // Change the background to green when the enemy is hit by a player projectile
{
ScreenManager.GraphicsDevice.Clear(Color.DarkGreen);
}
else
{
ScreenManager.GraphicsDevice.Clear(Color.Black);
}
spriteBatch.End();
// If the game is transitioning on or off, fade it out to black.
if (!(TransitionPosition > 0) && !(_pauseAlpha > 0))
{
return;
}
//Linear interpolation
var alpha = MathHelper.Lerp(1f - TransitionAlpha, 1f, _pauseAlpha / 2);
ScreenManager.FadeBackBufferToBlack(alpha);
}
/// <summary>
/// Draws the message box.
/// </summary>
public override void Draw(GameTime gameTime)
{
var spriteBatch = ScreenManager.SpriteBatch;
var font = ScreenManager.Font;
// Darken down any other screens that were drawn beneath the popup.
ScreenManager.FadeBackBufferToBlack(TransitionAlpha * 2 / 3);
// Center the message text in the viewport.
var viewport = ScreenManager.GraphicsDevice.Viewport;
var viewportSize = new Vector2(viewport.Width, viewport.Height);
var textSize = font.MeasureString(_message);
var textPosition = (viewportSize - textSize) / 2;
// The background includes a border somewhat larger than the text itself.
const int hPad = 32;
const int vPad = 16;
var backgroundRectangle = new Rectangle(
(int)textPosition.X - hPad,
(int)textPosition.Y - vPad,
(int)textSize.X + hPad * 2,
(int)textSize.Y + vPad * 2);
// Fade the popup alpha during transitions.
var color = Color.White * TransitionAlpha;
spriteBatch.Begin();
// Draw the background rectangle.
spriteBatch.Draw(_gradientTexture, backgroundRectangle, color);
// Draw the message box text.
spriteBatch.DrawString(font, _message, textPosition, color);
spriteBatch.End();
}