Boss bar display API

BossBar

A BossBar is the bar displayed at the top of the screen (like the Ender Dragon or Wither health bar). You can create custom boss bars with custom titles, colors, and progress.

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Class Methods

create

bar = BossBar.create(title, color=None, style=None, players=None)

Create a new boss bar. This is synchronous.

• Parameters:
• title (str) — Bar title text. Supports § color codes.
• color (BarColor | None) — Bar color. Default None (PINK).
• style (BarStyle | None) — Bar segmentation style. Default None (SOLID).
• players (list[Player] | None) — Players who can see the bar. Default None.
• Returns: BossBar

bar = BossBar.create(
    "§c§lRaid Boss",
    color=BarColor.RED,
    style=BarStyle.SEGMENTED_10
)

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Attributes

title

• Type: str

Current title text.

progress

• Type: float

Progress value from 0.0 (empty) to 1.0 (full).

color

• Type: BarColor

Current bar color.

style

• Type: BarStyle

Current segmentation style.

visible

• Type: bool

Whether the bar is currently visible.

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Methods

add_player

await bar.add_player(player)

Show this bar to a player.

• Parameters:
• player (Player) — Player to add.
• Returns: Awaitable[None]

remove_player

await bar.remove_player(player)

Hide this bar from a player.

• Parameters:
• player (Player) — Player to remove.
• Returns: Awaitable[None]

set_title

await bar.set_title(title)

Change the bar title.

• Parameters:
• title (str) — New title text.
• Returns: Awaitable[None]

set_progress

await bar.set_progress(value)

Set the bar progress.

• Parameters:
• value (float) — Progress from 0.0 to 1.0.
• Returns: Awaitable[None]

await bar.set_progress(0.5)  # Half full

set_color

await bar.set_color(color)

Change the bar color.

• Parameters:
• color (BarColor) — New color.
• Returns: Awaitable[None]

set_style

await bar.set_style(style)

Change the bar segmentation style.

• Parameters:
• style (BarStyle) — New style.
• Returns: Awaitable[None]

set_visible

await bar.set_visible(value)

Show or hide the bar without removing players.

• Parameters:
• value (bool) — Visibility.
• Returns: Awaitable[None]

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BarColor Options

Name	Description
PINK	Default pink
BLUE	Blue
RED	Red
GREEN	Green
YELLOW	Yellow
PURPLE	Purple
WHITE	White

BarStyle Options

Name	Description
SOLID	No segments
SEGMENTED_6	6 segments
SEGMENTED_10	10 segments
SEGMENTED_12	12 segments
SEGMENTED_20	20 segments

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Example: Health bar for a boss fight

from bridge import *

boss_bar = BossBar.create("§c§lDragon §7- §c100%", color=BarColor.RED, style=BarStyle.SEGMENTED_10)

@event
async def entity_damage(e: Event):
    entity = e.entity
    if entity.custom_name == "Dragon":
        hp_pct = entity.health / 100
        await boss_bar.set_progress(hp_pct)
        await boss_bar.set_title(f"§c§lDragon §7- §c{int(hp_pct * 100)}%")