Flashlight (lazer mod)

Flashlight

Restricted view area.

Acronym	FL
Type	Difficulty Increase
Default shortcut key	K
Default shortcut key	J
Default shortcut key	L
Game modes
Score multiplier	See Scoring
Status	Ranked
Incompatible mods	Blinds (BL), Bloom (BM)
Incompatible mods	None
Incompatible mods	Fade In (FI), Hidden (HD), Cover (CO)

The Flashlight mod restricts visibility of the playfield to a small illuminated area, as if viewed through a flashlight. As the player's combo increases, this visible area progressively shrinks until it reaches a minimum size, which varies depending on the game mode.

Customisation

• Follow delay (120–1200, default: 120): Milliseconds until the flashlight reaches the cursor. This option is only available in the osu! game mode.
• Flashlight size ( 0.5–2.0, 0.5–1.5, 0.5–3.0, default: 1.0): Multiplier applied to the default flashlight size.
• Change size based on combo (default : enabled, default : disabled): Decrease the Flashlight size as combo increases.

Changing any of these settings will cause your scores to be unranked.

Scoring

osu!

In osu!, Flashlight has a score multiplier of 1.20x by default, but is modified under certain conditions. The exact multiplier is calculated as follows:

1. The intial multiplier is 0.20x.
2. For each 0.1 step the Flashlight size is increased above its default value, this multiplier is reduced by 0.02x (to a minimum of 0.02x). Decreasing the Flashlight size below its default value does not affect the multiplier.
3. If Change size based on combo is disabled, the multiplier is divided by 5.
4. If Freeze Frame (FR) is enabled, the multiplier is divided by 2.
5. Finally, 1 is added to the multiplier, therefore always resulting in a value between 1.02x and 1.20x.

Thus, if S is the selected Flashlight size, C = 5 if Change size based on combo is disabled (C = 1 otherwise) and F = 2 if Freeze Frame (FR) is enabled (F = 1 otherwise), the score multiplier is given by the following formula:¹

Flashlight score multiplier in osu!

Example

To illustrate, consider the following situation: The user wants to play a beatmap using Freeze Frame and Flashlight with aFlashlight size of 1.3 that decreases as combo increases.

Since the Flashlight size has been increased by 0.3, the initial multiplier 0.20x is reduced by 3 * 0.02 = 0.06x, meaning the multiplier becomes 0.20 - 3 * 0.02 = 0.14x.

Due to Freeze Frame, this value is divided by 2 and 1 is added, resulting in a final score multiplier of 1 + 0.14 / 2 = 1.07x.

osu!taiko and osu!catch

In osu!taiko and osu!catch, Flashlight has a score multiplier of 1.12x. However, by changing any of its settings, the multiplier is reduced to 1.00x.

osu!mania

In osu!mania, Flashlight has a score multiplier of 1.00x, regardless of its settings.

References