/// <summary>
/// Handles input, performs physics, and animates the player sprite.
/// </summary>
/// <remarks>
/// We pass in all of the input states so that our game is only polling the hardware
/// once per frame. We also pass the game's orientation because when using the accelerometer,
/// we need to reverse our motion when the orientation is in the LandscapeRight orientation.
/// </remarks>
public void Update(
GameTime gameTime,
KeyboardState keyboardState,
GamePadState gamePadState,
AccelerometerState accelState,
DisplayOrientation orientation)
{
GetInput(keyboardState, gamePadState, accelState, orientation);
ApplyPhysics(gameTime);
if (IsAlive && IsOnGround)
{
if (Math.Abs(Velocity.X) - 0.02f > 0)
{
sprite.PlayAnimation(runAnimation);
}
else
{
sprite.PlayAnimation(idleAnimation);
}
}
// Clear input.
movement = 0.0f;
isJumping = false;
}
/// <summary>
/// Updates all objects in the world, performs collision between them,
/// and handles the time limit with scoring.
/// </summary>
public void Update(
GameTime gameTime,
KeyboardState keyboardState,
GamePadState gamePadState,
TouchCollection touchState,
AccelerometerState accelState,
DisplayOrientation orientation)
{
// Pause while the player is dead or time is expired.
if (!Player.IsAlive || TimeRemaining == TimeSpan.Zero)
{
// Still want to perform physics on the player.
Player.ApplyPhysics(gameTime);
}
else if (ReachedExit)
{
// Animate the time being converted into points.
int seconds = (int)Math.Round(gameTime.ElapsedGameTime.TotalSeconds * 100.0f);
seconds = Math.Min(seconds, (int)Math.Ceiling(TimeRemaining.TotalSeconds));
timeRemaining -= TimeSpan.FromSeconds(seconds);
score += seconds * PointsPerSecond;
}
else
{
timeRemaining -= gameTime.ElapsedGameTime;
Player.Update(gameTime, keyboardState, gamePadState, touchState, accelState, orientation);
UpdateGems(gameTime);
// Falling off the bottom of the level kills the player.
if (Player.BoundingRectangle.Top >= Height * Tile.Height)
{
OnPlayerKilled(null);
}
UpdateEnemies(gameTime);
// The player has reached the exit if they are standing on the ground and
// his bounding rectangle contains the center of the exit tile. They can only
// exit when they have collected all of the gems.
if (Player.IsAlive &&
Player.IsOnGround &&
Player.BoundingRectangle.Contains(exit))
{
OnExitReached();
}
}
// Clamp the time remaining at zero.
if (timeRemaining < TimeSpan.Zero)
{
timeRemaining = TimeSpan.Zero;
}
}
/// <summary>
/// Gets player horizontal movement and jump commands from input.
/// </summary>
private void GetInput(
KeyboardState keyboardState,
GamePadState gamePadState,
TouchCollection touchState,
AccelerometerState accelState,
DisplayOrientation orientation)
{
// Get analog horizontal movement.
movement = gamePadState.ThumbSticks.Left.X * MoveStickScale;
// Ignore small movements to prevent running in place.
if (Math.Abs(movement) < 0.5f)
{
movement = 0.0f;
}
// Move the player with accelerometer
if (Math.Abs(accelState.Acceleration.Y) > 0.10f)
{
// set our movement speed
movement = MathHelper.Clamp(-accelState.Acceleration.Y * AccelerometerScale, -1f, 1f);
// if we're in the LandscapeLeft orientation, we must reverse our movement
if (orientation == DisplayOrientation.LandscapeRight)
{
movement = -movement;
}
}
// If any digital horizontal movement input is found, override the analog movement.
if (gamePadState.IsButtonDown(Buttons.DPadLeft) ||
keyboardState.IsKeyDown(Keys.Left) ||
keyboardState.IsKeyDown(Keys.A))
{
movement = -1.0f;
}
else if (gamePadState.IsButtonDown(Buttons.DPadRight) ||
keyboardState.IsKeyDown(Keys.Right) ||
keyboardState.IsKeyDown(Keys.D))
{
movement = 1.0f;
}
// Check if the player wants to jump.
isJumping =
gamePadState.IsButtonDown(JumpButton) ||
keyboardState.IsKeyDown(Keys.Space) ||
keyboardState.IsKeyDown(Keys.Up) ||
keyboardState.IsKeyDown(Keys.W) ||
touchState.AnyTouch();
}
private void HandleInput(GameTime gameTime)
{
// get all of our input states
keyboardState = Keyboard.GetState();
touchState = TouchPanel.GetState();
gamePadState = virtualGamePad.GetState(touchState, GamePad.GetState(PlayerIndex.One));
accelerometerState = Accelerometer.GetState();
#if !NETFX_CORE && !JSIL
// Exit the game when back is pressed.
if (gamePadState.Buttons.Back == ButtonState.Pressed)
{
Exit();
}
#endif
bool continuePressed =
keyboardState.IsKeyDown(Keys.Space) ||
gamePadState.IsButtonDown(Buttons.A) ||
touchState.AnyTouch();
// Perform the appropriate action to advance the game and
// to get the player back to playing.
if (!wasContinuePressed && continuePressed)
{
if (!level.Player.IsAlive)
{
level.StartNewLife();
}
else if (level.TimeRemaining == TimeSpan.Zero)
{
if (level.ReachedExit)
{
LoadNextLevel();
}
else
{
ReloadCurrentLevel();
}
}
}
wasContinuePressed = continuePressed;
virtualGamePad.Update(gameTime);
}