private void CreateMissile()
{
var missileSprite = new MissileSprite(_missileTexture, _exhaustTexture);
missileSprite.Position = new Vector2(_playerSprite.Position.X + 33, _playerSprite.Position.Y - 25);
_missileList.Add(missileSprite);
AddGameObject(missileSprite);
}
/// <summary>
/// Load the game over screen
/// </summary>
public override void Load()
{
GridStyle = GridStyles.Ticks;
BackgroundColor = Color.Black;
FontName = "QuartzMS";
// Add the score text
ScoreText = AddText(new Text
{
Alignment = HorizontalAlignments.Left,
VerticalAlign = VerticalAlignments.Top,
Scale = .4f,
Position = new Vector2(-100f, 100f),
Color = Color.White
});
// Add the start key text
RestartText = AddText(new Text
{
Value = "Press SPACE to Play",
Position = new Vector2(0f, -100f),
Alignment = HorizontalAlignments.Center,
VerticalAlign = VerticalAlignments.Bottom,
AnimationType = TextAnimations.Typewriter,
AnimationSeconds = 0.2,
Scale = 0.5f,
Color = Color.Lime
});
if (Game.Platform == GamePlatforms.XBox)
{
RestartText.Value = "Press START to Play";
}
else if (Game.Platform == GamePlatforms.WindowsPhone)
{
RestartText.Value = "TAP to Play";
}
missile = AddSprite<MissileSprite>();
missile.SetCostume("ufo");
missile.Costume.YCenter = VerticalAlignments.Center;
missile.Scale = 2;
missile.Show();
missile.X = 0;
missile.Y = 50;
barrier = AddSprite<BarrierSprite>();
barrier.Scale = 2.5f;
barrier.Y = -70;
ufo = AddSprite<UfoSprite>();
ufo.Position = Vector2.Zero;
ufo.Costume.YCenter = VerticalAlignments.Top;
ufo.Scale = 1;
ufo.Show();
}
using Color = Microsoft.Xna.Framework.Color;
#endregion
namespace ScratchyXna
{
public class PlayScreen : Scene
{
public enum PlayScreenModes
{
Init,
ShowingPlayerNumber,
Playing,
Finished
}
public override void HandleInput(GameTime gameTime)
{
InputManager.GetCommands(cmd =>
{
if (cmd is DevInputCommand.DevQuit)
{
NotifyEvent(new BaseGameStateEvent.GameQuit());
}
if (cmd is DevInputCommand.DevShoot)
{
_missile = new MissileSprite(LoadTexture(MissileTexture), LoadTexture(ExhaustTexture));
_missile.Position = new Vector2(_player.Position.X, _player.Position.Y - 25);
AddGameObject(_missile);
}
});
}
public void StartProgram()
{
SnapsEngine.SetBackgroundColor(SnapsColor.Black);
SnapsEngine.StartGameEngine(fullScreen: false, framesPerSecond: 60);
List <MovingSprite> sprites = new List <MovingSprite>();
List <AlienSprite> aliens = new List <AlienSprite>();
for (int i = 0; i < 100; i++)
{
ImageSprite starImage = new ImageSprite(imageURL: "ms-appx:///Images/star.png");
SnapsEngine.AddSpriteToGame(starImage);
starImage.ScaleSpriteWidth(SnapsEngine.GameViewportWidth / 75);
FallingSprite star = new FallingSprite(sprite: starImage,
xSpeed: 0, ySpeed: 15,
viewportWidth: SnapsEngine.GameViewportWidth,
viewportHeight: SnapsEngine.GameViewportHeight);
sprites.Add(star);
}
ImageSprite rocketImage = new ImageSprite(imageURL: "ms-appx:///Images/SpaceRocket.png");
SnapsEngine.AddSpriteToGame(rocketImage);
rocketImage.ScaleSpriteWidth(SnapsEngine.GameViewportWidth / 15);
rocketImage.CenterX = SnapsEngine.GameViewportWidth / 2.0;
rocketImage.CenterY = SnapsEngine.GameViewportHeight / 2.0;
RocketSprite rocket = new RocketSprite(sprite: rocketImage, xSpeed: 10, ySpeed: 10);
sprites.Add(rocket);
ImageSprite chasingAlienImage = new ImageSprite(imageURL: "ms-appx:///Images/purpleAlien.png");
SnapsEngine.AddSpriteToGame(chasingAlienImage);
chasingAlienImage.Top = 10;
chasingAlienImage.ScaleSpriteWidth(SnapsEngine.GameViewportWidth / 20);
chasingAlienImage.CenterX = SnapsEngine.GameViewportWidth / 2.0;
chasingAlienImage.Top = 0;
ChasingAlien chaser = new ChasingAlien(sprite: chasingAlienImage, target: rocket, xAcceleration: .3, yAcceleration: .3, friction: 0.99);
sprites.Add(chaser);
aliens.Add(chaser);
int noOfAliens = 10;
double alienWidth = SnapsEngine.GameViewportWidth / (noOfAliens * 2);
double alienSpacing = (SnapsEngine.GameViewportWidth - alienWidth) / noOfAliens;
double alienX = 0;
double alienY = 100;
for (int i = 0; i < noOfAliens; i = i + 1)
{
ImageSprite alienImage = new ImageSprite(imageURL: "ms-appx:///Images/greenAlien.png");
SnapsEngine.AddSpriteToGame(alienImage);
alienImage.ScaleSpriteWidth(alienWidth);
alienImage.CenterX = alienX;
alienImage.Top = alienY;
double xMin = alienX;
double xMax = alienX + alienSpacing;
LineAlien alien = new LineAlien(sprite: alienImage, xSpeed: 2, ySpeed: 0, target: rocket, xMax: xMax, xMin: xMin);
sprites.Add(alien);
aliens.Add(alien);
alienX = alienX + alienSpacing;
}
ImageSprite missileImage = new ImageSprite(imageURL: "ms-appx:///Images/Missile.png");
missileImage.ScaleSpriteWidth(SnapsEngine.GameViewportWidth / 200);
SnapsEngine.AddSpriteToGame(missileImage);
MissileSprite missile = new MissileSprite(sprite: missileImage, rocket: rocket, xSpeed: 0, ySpeed: -15, aliens: aliens);
sprites.Add(missile);
rocket.Missiles.Add(missile);
while (true)
{
foreach (MovingSprite sprite in sprites)
{
sprite.Update();
}
SnapsEngine.DrawGamePage();
}
}
void setupGame()
{
SnapsEngine.SetBackgroundColor(SnapsColor.Black);
SnapsEngine.StartGameEngine(fullScreen: false, framesPerSecond: 60);
for (int i = 0; i < 100; i++)
{
ImageSprite starImage = new ImageSprite(imageURL: "ms-appx:///Images/star.png");
SnapsEngine.AddSpriteToGame(starImage);
starImage.ScaleSpriteWidth(SnapsEngine.GameViewportWidth / 75);
FallingSprite star = new FallingSprite(sprite: starImage,
xSpeed: 0, ySpeed: 15,
viewportWidth: SnapsEngine.GameViewportWidth,
viewportHeight: SnapsEngine.GameViewportHeight);
sprites.Add(star);
}
ImageSprite rocketImage = new ImageSprite(imageURL: "ms-appx:///Images/SpaceRocket.png");
SnapsEngine.AddSpriteToGame(rocketImage);
rocketImage.ScaleSpriteWidth(SnapsEngine.GameViewportWidth / 15);
rocketImage.CenterX = SnapsEngine.GameViewportWidth / 2.0;
rocketImage.CenterY = SnapsEngine.GameViewportHeight / 2.0;
rocket = new RocketSprite(sprite: rocketImage, game: this, xSpeed: 10, ySpeed: 10);
sprites.Add(rocket);
ImageSprite chasingAlienImage = new ImageSprite(imageURL: "ms-appx:///Images/purpleAlien.png");
SnapsEngine.AddSpriteToGame(chasingAlienImage);
chasingAlienImage.Top = 10;
chasingAlienImage.ScaleSpriteWidth(SnapsEngine.GameViewportWidth / 20);
chasingAlienImage.CenterX = SnapsEngine.GameViewportWidth / 2.0;
chasingAlienImage.Top = 0;
chaser = new ChasingAlien(sprite: chasingAlienImage, game: this, target: rocket, xAcceleration: .3, yAcceleration: .3, friction: 0.99);
sprites.Add(chaser);
aliens.Add(chaser);
int noOfAliens = 10;
double alienWidth = SnapsEngine.GameViewportWidth / (noOfAliens * 2);
double alienSpacing = (SnapsEngine.GameViewportWidth - alienWidth) / noOfAliens;
double alienX = 0;
double alienY = 100;
for (int i = 0; i < noOfAliens; i = i + 1)
{
ImageSprite alienImage = new ImageSprite(imageURL: "ms-appx:///Images/greenAlien.png");
SnapsEngine.AddSpriteToGame(alienImage);
alienImage.ScaleSpriteWidth(alienWidth);
alienImage.CenterX = alienX;
alienImage.Top = alienY;
double xMin = alienX;
double xMax = alienX + alienSpacing;
LineAlien alien = new LineAlien(sprite: alienImage, game: this, xSpeed: 2, ySpeed: 0, target: rocket, xMax: xMax, xMin: xMin);
sprites.Add(alien);
aliens.Add(alien);
alienX = alienX + alienSpacing;
}
ImageSprite missileImage = new ImageSprite(imageURL: "ms-appx:///Images/Missile.png");
missileImage.ScaleSpriteWidth(SnapsEngine.GameViewportWidth / 200);
SnapsEngine.AddSpriteToGame(missileImage);
MissileSprite missile = new MissileSprite(sprite: missileImage, rocket: rocket, xSpeed: 0, ySpeed: -15, aliens: aliens);
sprites.Add(missile);
rocket.Missiles.Add(missile);
gameOverScreen = new ImageSprite(imageURL: "ms-appx:///Images/SpaceRocketsInSpaceGameOverScreen.png");
gameOverScreen.Hide();
SnapsEngine.AddSpriteToGame(gameOverScreen);
gameOverScreen.Width = SnapsEngine.GameViewportWidth;
gameOverScreen.Height = SnapsEngine.GameViewportHeight;
messageBack = new TextBlockSprite(text: "", fontSize: 60,
fontFamily: "Impact", color: SnapsColor.Black);
SnapsEngine.AddSpriteToGame(messageBack);
message = new TextBlockSprite(text: "", fontSize: 60,
fontFamily: "Impact", color: SnapsColor.Red);
SnapsEngine.AddSpriteToGame(message);
titleScreen = new ImageSprite(imageURL: "ms-appx:///Images/SpaceRocketsInSpaceTitleScreen.png");
titleScreen.Hide();
SnapsEngine.AddSpriteToGame(titleScreen);
titleScreen.Width = SnapsEngine.GameViewportWidth;
titleScreen.Height = SnapsEngine.GameViewportHeight;
}