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-
- TETRIS for the Atari ST (monochrome only)
-
-
-
- DESCRIPTION
- Tetris is a game involving dropping shapes. While a
- shape drops, the player can move it to the left, right,
- and turn it (anti-clockwise). If a shape can't drop any
- further, it will be fixed and a new shape will enter
- the playing field. If the entrance of a new shape is
- blocked the game is over.
-
- When one or more rows of the playing field are entirely
- filled, they will be removed and higher rows will shift
- downward thus effectively gaining room for more shapes
- to enter the playing field.
- The level will change depending on the number of rows
- the player has removed (level = rows/10 -1).
-
- Tetris always displays the next shape to come in the small
- window next to the playing field.
-
-
- SHAPES The shapes are each build up of four elements (squares).
- For each new shape Tetris will choose randomly out of
- one of these seven shapes:
-
- ** **** * *** *** ** **
- ** *** * * ** **
-
-
- SETTINGS
- Before starting a new game, the player can affect any of
- the following settings (default in brackets):
-
- Level (0) Any number between 0-9. The level determines
- the speed by which the shapes drop.
- Advanced (off) The dropping speed will be multiplied by 2
- for each level.
- Rows (0) Tetris will randomly occupy the indicated
- number of rows.
-
-
- PLAYING MODES
- There are three different modes to play Tetris:
-
- PLAY Play a normal game of Tetris.
- HELP For each new shape Tetris will give his best guess
- where to place it.
- ROBOT Tetris will play the game himself.
-
- In the latter two cases the high score will not be effected.
-
-
- KEY BINDINGS
- <Left arrow> Move the shape left (also h key)
- <Right arrow> Move the shape right (also l key)
- <Up arrow> Turn the shape (also k key)
- <Help> Drop the shape
- <1-9> Change the current level (upward only)
- <Space bar> Pause the game
- <Esc> Quit the current game
-
-
- SCORE The player gets points for every shape positioned on the
- playing field. The number of points depend on the current
- level, and the height where the shape is positioned.
- Extra points can be obtained by dropping the shape (HELP key)
- or playing in advanced mode (see SETTINGS).
-
-
- BUGS The ROBOT mode doesn't consider the next shape in his choice
- for the most efficient position of the current shape.
- The robot plays quit well however (I measured an average of
- 12500 points over 40 games, with a maximum of 42598!).
-
-
- AUTHOR Jan van der Steen, Amsterdam.
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-
- -=-=-=-=-=-=-=-=-=-=-=-=-=--=-=-=-=-=-=-=-=-
- Jan van der Steen, CWI the Netherlands
- jansteen@cwi.nl (or uunet!mcvax!jansteen)
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