From wiki
Using DAS to move an I tetromino back and forth.
Delayed Auto Shift or autorepeat refers to the behavior of most falling block puzzle games when the player holds the left or right key. The game will shift the falling piece sideways, wait, and then shift it repeatedly if the player continues to hold the key.
Some games read the keys as on-off switches and implement DAS in software. Other games, especially earlier games running on home computers, rely on the automatic repeat provided by the hardware or operating system, which the user often has the ability to configure. (In Windows 2000 and Windows XP, this setting is Control Panel > Keyboard > Speed > Character repeat. Likewise, in Mac OS X, the Keyboard & Mouse preferences control the speed of key repeat.)
Charging DAS during ARE.
Some games that have ARE or line clear delays allow the player to "charge" DAS by holding the movement key during these delays, so that the piece starts moving sideways as soon as it appears.
Games where ARE or line clear delay becomes faster over time, such as later TGM series games, often decrease DAS delay at the same time.
[edit] Games with slow DAS
Tetromino based:
Other:
[edit] Games with fast DAS
Tetromino based games with at least 20 Hz DAS:
Other:
[edit] Practical considerations
- Main article: 60 Hz SRS Movement Finesse
Tactics for placing tetrominoes differ per game based on the speed of DAS and based on whether the player can load DAS during a line clear.
[edit] One space from the wall
To place a T, L, or J tetromino with its flat side one square from the side of the matrix at low gravity, it is fastest to rotate the tetromino after moving it. In bounding box based rotation systems such as SRS or its immediate predecessors, this applies to S and Z as well.
Rotate before move, tap tap tap:
Rotate before move, DAS then backtrack:
Rotate before move, DAS then let go before the tetromino hits the wall, leads to misdrops, especially in games with fast DAS:
