Difference between revisions of "Arika Rotation System"

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*The I piece will never kick.
*The I piece will never kick.
*L, J, and T pieces will not rotate in the situations illustrated below.
*L, J, and T pieces will not rotate in the situations illustrated below if the [[Image:XTet.png|X]] marked block is occupied.


{|
{|
|- valign="top"
|width="200pt"|{{pfstart}}
{{pfrow| | | | | | | |X| | }}
{{pfrow| |L|L|L| | |L|L|L| }}
{{pfrow| |L|X| | | |L| | | }}
{{pfend}}
|width="200pt"|{{pfstart}}
{{pfrow| | |X| | | | | | | }}
{{pfrow| | | |L| | | |X|L| }}
{{pfrow| |L|L|L| | |L|L|L| }}
{{pfend}}
|-
|{{pfstart}}
|{{pfstart}}
{{pfrow| | | | | | | | | | }}
{{pfrow| | | | | | | |X| | }}
{{pfrow| |L|L|L| | |J|J|J| }}
{{pfrow| |J|J|J| | |J|J|J| }}
{{pfrow| |L|X| | | | |X|J| }}
{{pfrow| | |X|J| | | | |J| }}
{{pfend}}
{{pfend}}
|{{pfstart}}
|{{pfstart}}
{{pfrow| | | | |X| | | | | }}
{{pfrow| | |X| | | | | | | }}
{{pfrow| | | | |I| | | | | }}
{{pfrow| |J| | | | |J|X| | }}
{{pfrow| | | |I|I|I| | | | }}
{{pfrow| |J|J|J| | |J|J|J| }}
{{pfend}}
{{pfend}}
|-
|-
| colspan="2" | If the [[Image:XTet.png|X]] marked block is occupied when rotating from this position, TGM will not attempt wall kicks.
|{{pfstart}}
{{pfrow| | |X| | | | |X| | }}
{{pfrow| | |I| | | |I|I|I| }}
{{pfrow| |I|I|I| | | |I| | }}
{{pfend}}
|}
 
*However, L pieces will rotate clockwise and J pieces counterclockwise in the situations illustrated below if both the [[Image:XTet.png|X]] marked blocks are occupied.
 
{|
|width="200pt"|{{pfstart}}
{{pfrow| |X| | | | | | |X| }}
{{pfrow| |L|L|L| | |J|J|J| }}
{{pfrow| |L|X| | | | |X|J| }}
{{pfend}}
|}
|}



Revision as of 22:03, 18 August 2007

TGM rotation is a game play mechanic used in Tetris The Grand Master and other Arika tetromino games, derived from Sega rotation.

Games using TGM rotation generally use IRS, fast DAS, lock delay, and firm drop, and tetrominoes start out with the topmost block on the top row (generally row 20). Tetris The Grand Master Ace uses a hybrid of TGM rules and Guideline rules.

Basic rotation

TGM's basic rotations inherits most of its properties from Sega rotation, which was used in most previous Japanese arcade Tetris games. Some defining design choices include:

  • Having 2 (as opposed to 4) rotation states for S, Z, and I pieces to simplify learning.
  • Keeping pieces at an even level while rotating to always allow rotation when the piece is on a flat surface.
  • Pointing the initial stance of the T, L, and J pieces downward to add some extra challenge and also make it easy to have pieces grab bumps along the surface of the stack when playing at high gravity.
TGM's basic rotations.


Wall kicks

TGM pioneered the use of wall kicks, with simple but effective kick rules. These rules were unchanged until TGM3, remaining constant across TGM, TA, TAP, and Sakura Tetris. Up to 3 locations are tried, in this order, before rotation will fail:

  • Basic rotaion
  • 1 space right of basic rotation
  • 1 space left of basic rotation

In addition to these rules, there are some extra exceptions where certain wall kicks are not allowed:

  • The I piece will never kick.
  • L, J, and T pieces will not rotate in the situations illustrated below if the X marked block is occupied.
Tet.pngTet.pngTet.pngTet.pngTet.pngTet.pngTet.pngXTet.pngTet.png
Tet.pngLLLTet.pngTet.pngLLLTet.png
Tet.pngLXTet.pngTet.pngTet.pngLTet.pngTet.pngTet.png
Tet.pngTet.pngXTet.pngTet.pngTet.pngTet.pngTet.pngTet.pngTet.png
Tet.pngTet.pngTet.pngLTet.pngTet.pngTet.pngXLTet.png
Tet.pngLLLTet.pngTet.pngLLLTet.png
Tet.pngTet.pngTet.pngTet.pngTet.pngTet.pngTet.pngXTet.pngTet.png
Tet.pngJJJTet.pngTet.pngJJJTet.png
Tet.pngTet.pngXJTet.pngTet.pngTet.pngTet.pngJTet.png
Tet.pngTet.pngXTet.pngTet.pngTet.pngTet.pngTet.pngTet.pngTet.png
Tet.pngJTet.pngTet.pngTet.pngTet.pngJXTet.pngTet.png
Tet.pngJJJTet.pngTet.pngJJJTet.png
Tet.pngTet.pngXTet.pngTet.pngTet.pngTet.pngXTet.pngTet.png
Tet.pngTet.pngITet.pngTet.pngTet.pngIIITet.png
Tet.pngIIITet.pngTet.pngTet.pngITet.pngTet.png
  • However, L pieces will rotate clockwise and J pieces counterclockwise in the situations illustrated below if both the X marked blocks are occupied.
Tet.pngXTet.pngTet.pngTet.pngTet.pngTet.pngTet.pngXTet.png
Tet.pngLLLTet.pngTet.pngJJJTet.png
Tet.pngLXTet.pngTet.pngTet.pngTet.pngXJTet.png

To-Do

  • describe Ti
  • describe ACE's ARS and ARS2
  • describe "Mihara's conspiracy"
  • mention right bias
  • add more visual aids?

References