public void Update(Sprite playerSprite, GameTime gameTime)
{
if (IsAlive)
{
if (alienSprite.position.X < playerSprite.position.X)
{
alienSprite.position.X++;
}
else if (alienSprite.position.X > playerSprite.position.X)
{
alienSprite.position.X--;
}
if (alienSprite.position.Y < playerSprite.position.Y)
{
alienSprite.position.Y++;
}
else if (alienSprite.position.Y > playerSprite.position.Y)
{
alienSprite.position.Y--;
}
alienSprite.Update(gameTime);
}
}
/// <summary>
/// Allows the game to run logic such as updating the world,
/// checking for collisions, gathering input, and playing audio.
/// </summary>
/// <param name="gameTime">Provides a snapshot of timing values.</param>
protected override void Update(GameTime gameTime)
{
if (Keyboard.GetState().IsKeyDown(Keys.Escape))
{
this.Exit();
}
keyboard.Update(Keyboard.GetState(), graphics, player, bullets);
player.Update(gameTime);
alien.Update(player, gameTime);
bullets.Update(gameTime);
int previousWave = wave;
wave = asteroids.Update(wave, gameTime);
if (wave != previousWave)
{
counter = 100;
alien.alienSprite.position = Vector2.Zero;
alien.LiveAlien();
}
lives = collision.Update(graphics, lives);
base.Update(gameTime);
}
public static void Update(GameTime gameTime)
{
float elapsed = (float)gameTime.ElapsedGameTime.TotalSeconds;
KeyboardState keyState = Keyboard.GetState();
MouseState mouseState = Mouse.GetState();
GamePadState padState = GamePad.GetState(PlayerIndex.One);
switch (AsteroidsGame.ControlStyle)
{
case ControlStyles.KBM_RH:
{
shipSprite.Velocity = Vector2.Zero;
// Movement
if (keyState.IsKeyDown(Keys.W))
{
shipSprite.Velocity += new Vector2(0, -1);
}
if (keyState.IsKeyDown(Keys.S))
{
shipSprite.Velocity += new Vector2(0, 1);
}
if (keyState.IsKeyDown(Keys.A))
{
shipSprite.Velocity += new Vector2(-1, 0);
}
if (keyState.IsKeyDown(Keys.D))
{
shipSprite.Velocity += new Vector2(1, 0);
}
shipSprite.Velocity.Normalize();
shipSprite.Velocity *= playerSpeed;
fireShotsMouse(mouseState, elapsed);
pointToMouseCursor(mouseState);
}
break;
case ControlStyles.KBM_LH:
{
shipSprite.Velocity = Vector2.Zero;
// Movement
if (keyState.IsKeyDown(Keys.O))
{
shipSprite.Velocity += new Vector2(0, -1);
}
if (keyState.IsKeyDown(Keys.L))
{
shipSprite.Velocity += new Vector2(0, 1);
}
if (keyState.IsKeyDown(Keys.K))
{
shipSprite.Velocity += new Vector2(-1, 0);
}
if (keyState.IsKeyDown(Keys.OemSemicolon))
{
shipSprite.Velocity += new Vector2(1, 0);
}
shipSprite.Velocity.Normalize();
shipSprite.Velocity *= playerSpeed;
fireShotsMouse(mouseState, elapsed);
pointToMouseCursor(mouseState);
}
break;
case ControlStyles.GamePad:
{
shipSprite.Velocity = Vector2.Zero;
shipSprite.Velocity = new Vector2(
padState.ThumbSticks.Left.X,
-padState.ThumbSticks.Left.Y);
shipSprite.Velocity.Normalize();
shipSprite.Velocity *= playerSpeed;
fireShotsGamePad(padState, elapsed);
shipSprite.RotateTo(new Vector2(
padState.ThumbSticks.Right.X,
padState.ThumbSticks.Right.Y) - shipSprite.Position);
}
break;
}
imposeMovementLimits();
shipSprite.Update(gameTime);
shotManager.Update(gameTime);
}