Difference between revisions of "Sega Rotation"

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[[Image:ARS-pieces.png|thumb|All rotation states of all seven tetrominoes. From top to bottom: I, J, L, S, T, Z. Top right: O.]]
 
[[Image:ARS-pieces.png|thumb|All rotation states of all seven tetrominoes. From top to bottom: I, J, L, S, T, Z. Top right: O.]]
  
'''Sega rotation''' is a [[rotation system]] that has been used by [[Sega Tetris|Sega's arcade version of ''Tetris'']] and its successors.
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The '''Sega Rotation''' is the [[rotation system]] used by Sega from [[Tetris (Sega)|Sega's 1988 ''Tetris'' arcade game]] until the 1999 game, ''[[Sega Tetris]]''.
  
 
== Basic rotation ==
 
== Basic rotation ==
  
Tetrominoes start out centered, rounding to the left. I goes in columns 3–6 counting from the left, O in columns 4–5, and others in columns 4–6. Each tetromino starts with its topmost solid block in row 20 (or 22 in ''TGM ACE'').
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Tetrominoes start out centered, rounding to the left. I goes in columns 3–6 counting from the left, O in columns 4–5, and others in columns 4–6. Each tetromino starts with its topmost solid block in row 20.
Each tetromino is ordinarily spawned flat side up.  There is no initial rotation, and no wallkicks. Additionally, the ceiling prevents rotation.
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Each tetromino is ordinarily spawned flat side up.  There is no initial rotation and no wallkicks. Additionally, the ceiling prevents rotation.
  
 
Apart from I and O, all tetrominoes rotate such that the bottom of the tetromino is at the bottom of the piece's bounding box. S and Z rotate between two states so that the center column stays constant. O does not rotate; I rotates between two states as depicted in the illustration.
 
Apart from I and O, all tetrominoes rotate such that the bottom of the tetromino is at the bottom of the piece's bounding box. S and Z rotate between two states so that the center column stays constant. O does not rotate; I rotates between two states as depicted in the illustration.
  
The differences between Sega rotation and [[Nintendo Rotation System]] are that the flat-side-down states of J, L, and T are pushed down by one space, that S and Z round in different directions, that I rounds differently from the other pieces, and that I requires more space under it to rotate to a vertical orientation.
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The differences between this and many other rotation systems are that the flat-side-down states of J, L, and T are pushed down by one space, that S and Z round in different directions, that I rounds differently from the other pieces, and that I requires more space under it to rotate to a vertical orientation.
  
Sega rotation originally used no [[wall kick]]s. [[Arika]] took Sega rotation, added mild wall kicks and initial rotation, and ended up with [[TGM Rotation]], or Arika Rotation System. In addition to the TGM series, most arcade games developed in Japan before the guideline followed the Sega rotation rules with varying degrees of wall kicks, such as [[Flash Point]], [[Bloxeed]], [[Sega Tetris]], and the [[Tetris Plus]] series.
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It originally used no [[wall kick]]s. [[Arika]] took inspiration of this rotation system, adding mild wall kicks and initial rotation to their own rotation system. This modified rotation system is called the [[TGM Rotation]] or Arika Rotation System (ARS). In addition to the TGM series, most arcade games developed in Japan before the guideline followed the Sega rotation rules with varying degrees of wall kicks, such as ''[[Flash Point]]'', ''[[Bloxeed]]'', ''Sega Tetris'', and the ''[[Tetris Plus]]'' [[Tetris Plus 2|series]].
  
 
== Colors ==
 
== Colors ==
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== Games ==
 
== Games ==
 
The following games use Sega rotation as their basic rotation: <!-- add more detail later -->
 
The following games use Sega rotation as their basic rotation: <!-- add more detail later -->
*[[Tetris (Sega)]]
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*''[[Tetris (Sega)|Sega's arcade version of Tetris (1988)]]''
*[[Flash Point]]
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*''Flash Point''
*[[Bloxeed]]
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*''Bloxeed''
*[[Tetris Plus]]
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*''Tetris Plus''
*[[Tetris Plus 2]]
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*''Tetris Plus 2''
*[[Tetris The Grand Master series]]
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*[[Tetris The Grand Master series|''Tetris The Grand Master'' series]]
*[[Tetris 64]] (with Rotation Center off)
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*''[[Tetris 64]]'' (with Rotation Center off)
*[[Sega Tetris]]
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*''Sega Tetris''
  
 
== See also ==
 
== See also ==

Revision as of 12:12, 29 October 2019

All rotation states of all seven tetrominoes. From top to bottom: I, J, L, S, T, Z. Top right: O.

The Sega Rotation is the rotation system used by Sega from Sega's 1988 Tetris arcade game until the 1999 game, Sega Tetris.

Basic rotation

Tetrominoes start out centered, rounding to the left. I goes in columns 3–6 counting from the left, O in columns 4–5, and others in columns 4–6. Each tetromino starts with its topmost solid block in row 20. Each tetromino is ordinarily spawned flat side up. There is no initial rotation and no wallkicks. Additionally, the ceiling prevents rotation.

Apart from I and O, all tetrominoes rotate such that the bottom of the tetromino is at the bottom of the piece's bounding box. S and Z rotate between two states so that the center column stays constant. O does not rotate; I rotates between two states as depicted in the illustration.

The differences between this and many other rotation systems are that the flat-side-down states of J, L, and T are pushed down by one space, that S and Z round in different directions, that I rounds differently from the other pieces, and that I requires more space under it to rotate to a vertical orientation.

It originally used no wall kicks. Arika took inspiration of this rotation system, adding mild wall kicks and initial rotation to their own rotation system. This modified rotation system is called the TGM Rotation or Arika Rotation System (ARS). In addition to the TGM series, most arcade games developed in Japan before the guideline followed the Sega rotation rules with varying degrees of wall kicks, such as Flash Point, Bloxeed, Sega Tetris, and the Tetris Plus series.

Colors

Games using TGM/Sega rotation generally uses the following color scheme:

I: red
...ZZZZ...
..........
J: blue
...JJJ....
.....J....
L: orange
...LLL....
...L......
O: yellow
....OO....
....OO....
S: magenta
....TT....
...TT.....
T: cyan
...III....
....I.....
Z: green
...SS.....
....SS....

Games

The following games use Sega rotation as their basic rotation:

See also

References