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Scroll

Scroll modifiers affect the general scroll of the notefield. This is often used to change from upscroll to downscroll among other effects.

Reverse

Desc: Reverse flips the scroll of the whole notefield from upscroll to downscroll. There is also a column-specific version that adds onto the value of normal Reverse.

Commonly, 50% or 100% is used on its' own.

Quirks: When going over 100%, the effect goes backwards, with 200% being normal upscroll again. Negative values go upward resulting in a longer notefield. This applies to the column-specific version, too. Going to 100% on column 1 will also make the judgment & combo swap positions.

For example, 100% reverse + 100% reverse on a single column would result in that single column having upscroll and the rest being downscroll.

Available Variants (modstring): reverse, reverse<column>

PlayerOptions format: Reverse(<magnitude> <approach rate>)

Example: Reverse(1, 2)

Column-specific format: ReverseCol(<column>, <magnitude>, <approach rate>)

Example: ReverseCol(2, 0.25, 0.25)

Modstring format: *<approach rate> <magnitude> <modstring variant>

example: *2 100% reverse *0.25 25% reverse2

Available sub modifiers:

UnboundedReverse

Desc: UnboundedReverse is a boolean modifier that makes it so Reverse no longer bounces back when going over 100% (Acts similar to negative reverse, behavior-wise). This affects all reverse-type modifiers, including Split, Alternate and Cross. In NotITG, this is known as reversetype.

PlayerOptions format: UnboundedReverse(<enable>)

modstring format: <enable> unboundedreverse

Split

Desc: The second half of the notefield gets reversed.

Commonly, 50% or 100% is used on its' own.

Quirks: Same as Reverse. If used in modes with an odd number of columns, the middle column also gets affected.

PlayerOptions format: Split(<magnitude>, <approach rate>)

Example: Split(0.75,3)

Modstring format: *<approach rate> <magnitude> split

example: *3 75% reverse

Alternate

Desc: Every other column gets reversed, starting with the second column. Also can be activated with ultraman in NotITG.

Commonly, 50% or 100% is used on its' own.

Quirks: Same as Reverse.

PlayerOptions format: Alternate(<magnitude>, <approach rate>)

Example: Alternate(1, 1)

Modstring format: *<approach rate> <magnitude> alternate

example: *1 100% alternate

Cross

Desc: The inner part of the notefield gets reversed with the outer sides staying as upscroll.

Commonly, 50% or 100% is used on its' own.

Quirks: Same as Reverse.

PlayerOptions format: Cross(<magnitude>, <approach rate>)

Example: Cross(0.25, 4)

Modstring format: *<approach rate> <magnitude> cross

example: *4 25% cross

Centered

Desc: Centered moves the notefield down to where the receptors are at the center of the whole field at 100% (which is usually around the middle of the screen), taking the above scroll modifiers into account (As seen with Alternate in the video example). Commonly used to create “driven drops”. Can also be activated with converge in modstring form.

Also often combined with other scroll modifiers above.

Commonly used at 100%, but more or less can be used. Negative values move the notefield up.

Quirks: The speed it has when going to the center depends on multiple theme metrics, so “driven drop” effects may be inconsistent across multiple themes. Most modfiles expect ITG positioning, which is available as the “Lower” note position setting in the default theme. The player’s Combo also moves down based on the current amount of Centered.

PlayerOptions format: Centered(<magnitude>, <approach rate>)

Example: Centered(1. 0.5)

Modstring format: *<approach rate> <magnitude> centered

example: *0.5 100% centered

CenteredPath

Desc: While Centered moves the notefield down in position, CenteredPath moves the columns down their current path in multiples of the column’s width (Commonly 64 pixels for dance mode). This consist amount allows for more consistent “driven drops” across different setups. In NotITG, this modifier is called centered2.

Large amounts of CenteredPath may be used because “driven drops” can span the whole screen height.

When combined with the opposite amount of MoveY in upscroll, interesting movement effects can be achieved.

Quirks: Because CenteredPath moves columns down the path, receptors may become affected by mods that otherwise would not affect them (As seen in the video example with Tornado), and note paths may look different.

PlayerOptions format: CenteredPath(<magnitude>, <approach rate>)

Example: CenteredPath(2.5,0.23)

Modstring format: *<approach rate> <magnitude> centeredpath

example: *0.23 250% centeredpath

What’s a “Driven Drop”?

Driven Drops are an effect where the notes are stationary while the receptor moves down to hit the notes. (As seen in the ITG course, “Driven”)

Often, speed mod has to be taken into account for these (which can be made simpler by forcing a speed mod).

CenteredPath makes it easier due to using a consistent amount that doesn’t depend on multiple theme metrics, but the resulting effect may look different.

“SCAR” Gimmicks

Before column-specific Reverse existed, Combinations of Split, Cross, Alternate and Reverse (SCAR, for short) were used to generate column-specific reverse in 4 panel modes. Here’s what’s possible when combining the modifiers.

SPLIT CROSS ALTERNATE Reverse LDUR reversed (1 = reversed)
50% -50% 50% 0% 0001
50% 50% -50% 0% 0010
-50% 50% -50% 0% 0100
50% 50% 50% 0% 0111
-50% -50% -50% 100% 1000
0% -100% 0% 100% 1001
50% 0% -100% 100% 1010
50% -50% -50% 100% 1011
-100% 0% 0% 100% 1100
-50% -50% 50% 100% 1101
-50% 50% -50% 100% 1110