Twisted Tetris

1
Twisted Tetris

• Jason Kulatunga
• Tyler Best
• CMPE 490

2
Game Modes

• Three game modes are available
• Classic
• Twisted
• Strategic

3
History

• Tetris created by Alexey Pazhitnov in 1984
• Packaged with the Gameboy at the handhelds
  release.

4
History

• Then

• Now

5
Basic Gameplay

• All modes show at least 1 Next Tetrad
• Tetrad shadows (Ghosts) are shown for each piece
  
• 10 Lines per Level
• For each increase in Level, Tetrad drop speed
  increases

6
Basic Gameplay

• Score, level and lines cleared displayed at all
  times in an info panel.
• Score will be based upon how many lines are
  cleared at one time,
• as well as what level you are on.

7
Basic Gameplay

• No Gravity

8
Classic Mode

• Basic Tetris that we all know and love.
• No changes from the Basic Gameplay
• Only 1 Next Tetrad is shown

9
Twisted Mode

• Hard, Very Hard
• 17 New Pieces, all made up of 5 blocks
• 2 Next Tetrads shown
• Speed varies per Tetrad randomly.

10
Strategic Mode

• 7 Classic Tetrads 1 New BOMB Piece
• Move counter, when the health bar disappears,
  GAME OVER, available moves affected by Level
• BOMB clears 1 block radius in all directions
  initially, increases at higher levels.

11
Controls

• Classic Tetris controls using keypad
• Left
• Right
• Down
• Drop
• Rotate
• Pause/Resume/Menu

12
Advanced Controls

• Touch capable LCD allows for block drops and
  block movement.
• Menu Navigation can be done by touch

13
Menu System

• Contextual menu, changes depending on the state
  of game play.
• Change game modes and pause/resume, restart and
  quit.
• Visual cues show currently selected item

14
Usability

• Pieces will start out in a variety of different 8
  bit colors.
• Once they are locked in place will set to Red.
• The ghost allows for the user to see where the
  piece will be placed, allowing for faster
  decision making.

15
LCD Touch

• The screen is divided into a 5x7 grid.
• When the resistive touch screen is touched by the
  user, the USART start to receive position bytes.
• Transmits 0xFF on the finger release.

16
LCD Touch

• The Start position byte is read, and each
  following byte overwrites the End position byte
  until an 0xFF is received.
• A column mask is used to separate the columns
  data from row data.

17
References

• Tetrads http//en.wikipedia.org/wiki/Tetris
• Pentomino - http//en.wikipedia.org/wiki/Pentomino
  
• Bomb - http//www.psdgraphics.com/wp-content/uploa
  ds/2010/01/bomb-icon.jpg
• Nintendo Gameboy - http//en.wikipedia.org/wiki/T
  etris_28Game_Boy29
• LCD Touch Panel Grid, Serial Connection -
  ezLCD-002 Reference Manual

18
Questions?