/// <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)
{
// Allows the game to exit
if (GamePad.GetState(PlayerIndex.One).Buttons.Back == ButtonState.Pressed)
{
this.Exit();
}
// TODO: Add your update logic here
previousKbState = kbState;
kbState = Keyboard.GetState();
// Esc to close game
if (kbState.IsKeyDown(Keys.Escape))
{
this.Exit();
}
dt = (float)gameTime.ElapsedGameTime.TotalSeconds;
switch (state)
{
case State.MENU:
score = 0;
topText = "Enter to begin. A to autoplay";
autoplay = false;
if (GetSongFilePath("song.txt")[0] != songFile[0])
{
audioAnalysis.DisposeAudioAnalysis();
songFile = GetSongFilePath("song.txt");
AnalyseSong(songFile[0]);
}
PlaceBeats();
if (kbState.IsKeyDown(Keys.Enter))
{
state = State.START_GAME;
}
else if (kbState.IsKeyDown(Keys.A))
{
autoplay = true;
state = State.START_GAME;
}
break;
case State.START_GAME:
audioAnalysis.PlayAudio();
topText = "";
state = State.PLAYING;
break;
case State.PLAYING:
// If the Quit button is pressed, end game
if (kbState.IsKeyDown(Keys.R))
{
state = State.END;
}
// If the playback has reached the end of the audio track, end game
if (audioAnalysis.PCMStream.Position >= audioAnalysis.PCMStream.Length)
{
state = State.END;
}
// Check if the Hit button is pressed
drumDown = false;
if (kbState.IsKeyDown(Keys.Left) ||
kbState.IsKeyDown(Keys.Right) ||
autoplay)
{
drumDown = true;
}
for (int i = 0; i < gameObjects.Count; i++)
{
gameObjects[i].update(dt);
}
for (int i = 0; i < notes.Count; i++)
{
notes[i].update(dt);
/*
* // Remove notes that go off screen
* if (notes[i].Position.X + notes[i].Origin.X < 0)
* {
* notes[i].Active = false;
* }
* else if (notes[i].Position.Y + notes[i].Origin.Y < 0)
* {
* notes[i].Active = false;
* }
* else if (notes[i].Alpha <= 0)
* {
* notes[i].Active = false;
* }*/
// Check for hit collision
if (drumDown)
{
float notePos = notes[i].Position.X;
// If note is on top of the marker
if (Math.Abs(markerPosX - notePos) <= noteSize &&
marker.Position.Y == notes[i].Position.Y)
{
// Increase the score
score += 100;
// Play a hit and fade away animation
notes[i].AlphaVelocity = -5.0f;
notes[i].Velocity = new Vector2(0, -1000);
notes[i].TintColor = Color.GhostWhite;
}
}
}
break;
case State.END:
audioAnalysis.StopAudio();
topText = "Game Over. R to restart";
if (previousKbState.IsKeyUp(Keys.R) && kbState.IsKeyDown(Keys.R))
{
state = State.MENU;
}
break;
}
base.Update(gameTime);
}