Print a box-drawing border character.

Add two vectors.

Draw the dynamic parts of the game interface (the board, the next piece preview pane, and the score). The static parts should be drawn with the drawS

* // See http://en.wikipedia.org/wiki/Box-drawing_character for unicode characters. */

Print a message in white text.

A board cell is two terminal cells wide, for squaritude. Only need to set the whole bg color (for filling in a cell).

Our own wrapper around termbox.SetCell which knows the background color we're using.

Randomly choose a new game piece from among the the available pieces.

Attempt to move.

Finds whether the current piece is in collision (going over the edge, or overlapping existing occupied blocks). This is useful for testing for collisi

Find the current PieceInstance of this piece.

Start up the ticker with the appropriate interval based on the current score.

Draw the pause screen, hiding the game board and next piece.

Pause or unpause the game, depending on game.paused.

Anchor the current piece to the board, clears lines, increments the score, and generate a new piece. Sets the 'game over' state if the new piece overl

Returns whether a vector is a member of the color map.

Moves the current piece to another location, if possible. The current piece is updated if this is successful; otherwise, the piece is left unmoved. Th

Check whether a horizontal row is complete.

Stop the game ticker. This stops automatic advancement of the piece.

A blocking function that waits for user input and then emits the appropriate GameEvent.

Finds the color of a particular board cell. It returns the background color if the cell is empty.

Draw the "GAME OVER" overlay on top of the game interface.

Initialize a new game, ready to be started with Start().

Drop the piece all the way and anchor it.

Rotates the current game piece, if possible.

Start running the game. It will continue indefinitely until the user exits.

Clear any complete rows and move the above blocks down. Returns the number of cleared rows.

Find all completed rows.

Clear a single row and move every above cell down.

Print the current score in big ascii art digits

Determine whether two vectors are the same.

Merge the blocks of the current piece into the game board and remove the current piece.

Create a new empty tetris board with no current piece.

Print a message vertically in white text.

Go to the next rotation.

This has all the hard-coded tetris pieces. TODO: It might be nice to have a way to parse these from a configuration file. Maybe the format could look

Go to the previous rotation.

A blocking function that waits on a ticker and then emits a MoveDown event.