// InputHandler for the various game states
public void HandleInput(GameTime gameTime, InputHelper inputHelper)
{
if (gameState == GameState.Menu)
{
// Check if the mousebutton is pressed, and if so if it was inside one of the boundingboxes of the buttons
if (inputHelper.MouseLeftButtonPressed())
{
if (Play.IsClicked(inputHelper))
{
// stop the Mediaplayer (so that the game song can be played) and make the mouse invisible
MediaPlayer.Stop();
TetrisGame.showmouse = false;
// Reset the game
Reset();
// Only play music in the main game if the user has it set to true in the options menu
if (music)
{
MediaPlayer.Play(playing);
Console.WriteLine(MediaPlayer.State);
}
if (videoison)
{
videoplayer.Play(backgroundvideo);
videoplayer.IsLooped = true;
}
gameState = GameState.Playing;
}
// Switch to other menus depending on which button was clicked
if (Help.IsClicked(inputHelper))
{
TetrisGame.showmouse = true;
gameState = GameState.Help;
}
if (Options.IsClicked(inputHelper))
{
TetrisGame.showmouse = true;
gameState = GameState.Options;
}
if (Back.IsClicked(inputHelper))
{
// set a boolean in the main game clas to true so that it exits the game
TetrisGame.exitgame = true;
}
}
}
if (gameState == GameState.Playing)
{
// Check if the current block even exists (this will never be the case but it is a failsafe)
if (newblock != null)
{
// Rotate the block left, check if its new position is valid, and if not rotate it back to it's previous position
if (inputHelper.KeyPressed(Keys.A, false))
{
newblock.RotateLeft();
if (!grid.IsValid(newblock))
{
newblock.RotateRight();
}
}
// Rotate the block right, check if its new position is valid, and if not rotate it back to it's previous position
if (inputHelper.KeyPressed(Keys.D, false))
{
newblock.RotateRight();
if (!grid.IsValid(newblock))
{
newblock.RotateLeft();
}
}
if (inputHelper.KeyPressed(Keys.W, false))
{
// Moves the current block down instantly, uses an optional boolean inside the TryMoveDown method to check if the block was placed
// (otherwise the next block would go down a bit because the loop didn't exit yet)
for (int i = 0; i < TetrisGrid.GridHeight; i++)
{
TryMoveDown(true);
if (placed)
{
// break the loop if Trymovedown communicates that it placed a block
placed = false;
break;
}
}
}
// Try to move the block down (same kind of strategy as the rotate method, but a seperate method handles all 3 commands plus
// a few additional extras)
if (inputHelper.KeyPressed(Keys.S, true))
{
TryMoveDown();
}
// Same as with the rotate method, try to move left and if it is not valid do the reverse operation
if (inputHelper.KeyPressed(Keys.Left, true))
{
newblock.MoveLeft();
if (!grid.IsValid(newblock))
{
newblock.MoveRight();
}
}
// Now the same but with moving right
if (inputHelper.KeyPressed(Keys.Right, true))
{
newblock.MoveRight();
if (!grid.IsValid(newblock))
{
newblock.MoveLeft();
}
}
}
}
if (gameState == GameState.Options)
{
// options menu to turn music and the video background off
if (inputHelper.MouseLeftButtonPressed())
{
// Go back to the main menu if the back button is clicked
if (Back.IsClicked(inputHelper))
{
gameState = GameState.Loading;
}
// if the music button is clicked, change to boolean to its reverse (true to false or false to true) and stop the music
// currently playing if it is set to false
if (Musicbutton.IsClicked(inputHelper))
{
music = !music;
if (!music)
{
MediaPlayer.Stop();
}
}
// Change the boolean for the videobackground if the button is clicked
if (Videobutton.IsClicked(inputHelper))
{
videoison = !videoison;
}
}
}
// Check if the player has pressed the back button in the help or gameover screen (it is the same button in the same position)
if (gameState == GameState.Help || gameState == GameState.GameOver)
{
if (inputHelper.MouseLeftButtonPressed())
{
if (Back.IsClicked(inputHelper))
{
gameState = GameState.Loading;
}
}
}
}
