Tetris Guideline: Difference between revisions
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*>Tepples (a bps employee publicly revealed the official term for the guideline randomizer - http://www.tetrisconcept.com/forum/viewtopic.php?p=2030#2030) |
*>Tepples (How Tetriswiki editors learn the rules; references) |
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The '''<i>Tetris</i> guideline''' is the current specification that [[The Tetris Company]] enforces for making all new (2001 and later) ''[[Tetris]]'' games alike in form. A mode labeled "standard" or just plain "Tetris" will adhere to the Guideline more closely than other modes. | The '''<i>Tetris</i> guideline''' is the current specification that [[The Tetris Company]] enforces for making all new (2001 and later) ''[[Tetris]]'' games alike in form. A mode labeled "standard" or just plain "Tetris" will adhere to the Guideline more closely than other modes. | ||
Current rules include: | Current rules, learned through observation of the behavior of authentic ''Tetris'' games, include: | ||
* | *[[Playfield]] at least 10 cells wide and 22 cells tall, where the top two may be hidden | ||
*[[Tetromino]] colors | *[[Tetromino]] colors | ||
**Cyan ''I'' | **Cyan ''I'' | ||
| Line 11: | Line 11: | ||
**Blue ''J'' | **Blue ''J'' | ||
**Orange ''L'' | **Orange ''L'' | ||
*"Random Generator" | *"Random Generator" (also called "random bag" or "7 system") | ||
**Game is divided into rounds. In each round, all seven tetrominoes are generated in a random permutation. (There are 5,040 such permutations.) Then this permutation is inserted into the next queue. | **Game is divided into rounds. In each round, all seven tetrominoes are generated in a random permutation. (There are 5,040 such permutations.) Then this permutation is inserted into the next queue. (There are 5,040 different such permutations.) Unlike the Memoryless generator in classic games, the Random Generator can produce only 12 tetrominoes can come between one I and the next I, and a run of S and Z tetrominoes is limited to 4. | ||
*Tetromino [[spawn]] locations | *Tetromino [[spawn]] locations | ||
**The ''I'' and ''O'' spawn in the middle columns | **The ''I'' and ''O'' spawn in the middle columns | ||
| Line 20: | Line 20: | ||
*"Hold piece": The player can press a button to send the falling tetromino to the hold box, and any tetromino that had been in the hold box moves to the top of the screen and begins falling. Hold cannot be used again until after the piece locks down. | *"Hold piece": The player can press a button to send the falling tetromino to the hold box, and any tetromino that had been in the hold box moves to the top of the screen and begins falling. Hold cannot be used again until after the piece locks down. | ||
The combination of hold piece and | The combination of hold piece and Random Generator would appear to allow the player to [[Playing forever|play forever]]. | ||
== References == | == References == | ||
*[http://www.eamobile.com/Web/Catalog/US/en/game/mobile/ProductDetailOverviewView/product-24171;jsessionid=MOGAKOLDNNNF EA Tetris product page], with official names for Guideline features | *[http://www.tetrisconcept.com/forum/viewtopic.php?p=822#822 Randomizer discussion on forum] | ||
**[http://www.tetrisconcept.com/forum/viewtopic.php?p=2030#2030 Name of Random Generator revealed] | |||
*[http://www.eamobile.com/Web/Catalog/US/en/game/mobile/ProductDetailOverviewView/product-24171;jsessionid=MOGAKOLDNNNF EA Tetris product page], with official names for some Guideline features | |||
Revision as of 20:03, 24 July 2006
The Tetris guideline is the current specification that The Tetris Company enforces for making all new (2001 and later) Tetris games alike in form. A mode labeled "standard" or just plain "Tetris" will adhere to the Guideline more closely than other modes.
Current rules, learned through observation of the behavior of authentic Tetris games, include:
- Playfield at least 10 cells wide and 22 cells tall, where the top two may be hidden
- Tetromino colors
- Cyan I
- Yellow O
- Purple T
- Green S
- Red Z
- Blue J
- Orange L
- "Random Generator" (also called "random bag" or "7 system")
- Game is divided into rounds. In each round, all seven tetrominoes are generated in a random permutation. (There are 5,040 such permutations.) Then this permutation is inserted into the next queue. (There are 5,040 different such permutations.) Unlike the Memoryless generator in classic games, the Random Generator can produce only 12 tetrominoes can come between one I and the next I, and a run of S and Z tetrominoes is limited to 4.
- Tetromino spawn locations
- The I and O spawn in the middle columns
- The rest spawn in the left-middle columns
- The tetrominoes spawn horizontally and with their flat side pointed down.
- Super Rotation System (SRS) specifies tetromino rotation and lockdown behavior
- "Hold piece": The player can press a button to send the falling tetromino to the hold box, and any tetromino that had been in the hold box moves to the top of the screen and begins falling. Hold cannot be used again until after the piece locks down.
The combination of hold piece and Random Generator would appear to allow the player to play forever.
References
- Randomizer discussion on forum
- EA Tetris product page, with official names for some Guideline features