refactor: split item type packages into definition/validator/actions

server/app/items/types/clock/__init__.py

@@ -1 +1,3 @@
-"""Item type plugin package."""
+"""Item type package exposing plugin module surface."""
+
+from .module import *  # noqa: F401,F403

server/app/items/types/clock/actions.py

@@ -0,0 +1,18 @@
+"""Clock item use actions."""
+
+from __future__ import annotations
+
+from typing import Callable
+
+from ....item_types import ItemUseResult
+from ....models import WorldItem
+
+
+def use_item(item: WorldItem, nickname: str, clock_formatter: Callable[[dict], str]) -> ItemUseResult:
+    """Read current clock time based on item configuration."""
+
+    display_time = clock_formatter(item.params)
+    return ItemUseResult(
+        self_message=f"{item.title} says {display_time}.",
+        others_message=f"{nickname} checks {item.title}. {item.title} says {display_time}.",
+    )

server/app/items/types/clock/definition.py

@@ -0,0 +1,65 @@
+"""Clock item static metadata and defaults."""
+
+from __future__ import annotations
+
+LABEL = "clock"
+TOOLTIP = "It tells the time. What did you think it did?"
+EDITABLE_PROPERTIES: tuple[str, ...] = ("title", "timeZone", "use24Hour")
+CAPABILITIES: tuple[str, ...] = ("editable", "carryable", "deletable", "usable")
+USE_SOUND: str | None = None
+EMIT_SOUND = "sounds/clock.ogg"
+USE_COOLDOWN_MS = 1000
+EMIT_RANGE = 10
+DIRECTIONAL = False
+DEFAULT_TITLE = "clock"
+DEFAULT_TIME_ZONE = "America/Detroit"
+TIME_ZONE_OPTIONS: tuple[str, ...] = (
+    "America/Anchorage",
+    "America/Argentina/Buenos_Aires",
+    "America/Chicago",
+    "America/Detroit",
+    "America/Halifax",
+    "America/Indiana/Indianapolis",
+    "America/Kentucky/Louisville",
+    "America/Los_Angeles",
+    "America/St_Johns",
+    "Asia/Bangkok",
+    "Asia/Dhaka",
+    "Asia/Dubai",
+    "Asia/Hong_Kong",
+    "Asia/Kabul",
+    "Asia/Karachi",
+    "Asia/Kathmandu",
+    "Asia/Kolkata",
+    "Asia/Seoul",
+    "Asia/Singapore",
+    "Asia/Tehran",
+    "Asia/Tokyo",
+    "Asia/Yangon",
+    "Atlantic/Azores",
+    "Atlantic/South_Georgia",
+    "Australia/Brisbane",
+    "Australia/Darwin",
+    "Australia/Eucla",
+    "Australia/Lord_Howe",
+    "Europe/Berlin",
+    "Europe/Helsinki",
+    "Europe/London",
+    "Europe/Moscow",
+    "Pacific/Apia",
+    "Pacific/Auckland",
+    "Pacific/Chatham",
+    "Pacific/Honolulu",
+    "Pacific/Kiritimati",
+    "Pacific/Noumea",
+    "Pacific/Pago_Pago",
+    "UTC",
+)
+DEFAULT_PARAMS: dict = {"timeZone": DEFAULT_TIME_ZONE, "use24Hour": False}
+PARAM_KEYS: tuple[str, ...] = ("timeZone", "use24Hour")
+
+PROPERTY_METADATA: dict[str, dict[str, object]] = {
+    "title": {"valueType": "text", "tooltip": "Display name spoken and shown for this item.", "maxLength": 80},
+    "timeZone": {"valueType": "list", "tooltip": "Timezone used when the clock speaks time."},
+    "use24Hour": {"valueType": "boolean", "tooltip": "Use 24 hour format instead of AM/PM."},
+}

server/app/items/types/clock/module.py

@@ -1,95 +1,41 @@
-"""Clock item schema metadata and behavior."""
+"""Clock item plugin module surface."""
 
 from __future__ import annotations
 
-from typing import Callable
-
-from ....item_types import ItemUseResult
-from ....models import WorldItem
-from ...helpers import keep_only_known_params, parse_bool_like_or_none
-
-LABEL = "clock"
-TOOLTIP = "It tells the time. What did you think it did?"
-EDITABLE_PROPERTIES: tuple[str, ...] = ("title", "timeZone", "use24Hour")
-CAPABILITIES: tuple[str, ...] = ("editable", "carryable", "deletable", "usable")
-USE_SOUND: str | None = None
-EMIT_SOUND = "sounds/clock.ogg"
-USE_COOLDOWN_MS = 1000
-EMIT_RANGE = 10
-DIRECTIONAL = False
-DEFAULT_TITLE = "clock"
-DEFAULT_TIME_ZONE = "America/Detroit"
-TIME_ZONE_OPTIONS: tuple[str, ...] = (
-    "America/Anchorage",
-    "America/Argentina/Buenos_Aires",
-    "America/Chicago",
-    "America/Detroit",
-    "America/Halifax",
-    "America/Indiana/Indianapolis",
-    "America/Kentucky/Louisville",
-    "America/Los_Angeles",
-    "America/St_Johns",
-    "Asia/Bangkok",
-    "Asia/Dhaka",
-    "Asia/Dubai",
-    "Asia/Hong_Kong",
-    "Asia/Kabul",
-    "Asia/Karachi",
-    "Asia/Kathmandu",
-    "Asia/Kolkata",
-    "Asia/Seoul",
-    "Asia/Singapore",
-    "Asia/Tehran",
-    "Asia/Tokyo",
-    "Asia/Yangon",
-    "Atlantic/Azores",
-    "Atlantic/South_Georgia",
-    "Australia/Brisbane",
-    "Australia/Darwin",
-    "Australia/Eucla",
-    "Australia/Lord_Howe",
-    "Europe/Berlin",
-    "Europe/Helsinki",
-    "Europe/London",
-    "Europe/Moscow",
-    "Pacific/Apia",
-    "Pacific/Auckland",
-    "Pacific/Chatham",
-    "Pacific/Honolulu",
-    "Pacific/Kiritimati",
-    "Pacific/Noumea",
-    "Pacific/Pago_Pago",
-    "UTC",
+from .actions import use_item
+from .definition import (
+    CAPABILITIES,
+    DEFAULT_PARAMS,
+    DEFAULT_TIME_ZONE,
+    DEFAULT_TITLE,
+    DIRECTIONAL,
+    EDITABLE_PROPERTIES,
+    EMIT_RANGE,
+    EMIT_SOUND,
+    LABEL,
+    PROPERTY_METADATA,
+    TIME_ZONE_OPTIONS,
+    TOOLTIP,
+    USE_COOLDOWN_MS,
+    USE_SOUND,
 )
-DEFAULT_PARAMS: dict = {"timeZone": DEFAULT_TIME_ZONE, "use24Hour": False}
-PARAM_KEYS: tuple[str, ...] = ("timeZone", "use24Hour")
+from .validator import validate_update
 
-PROPERTY_METADATA: dict[str, dict[str, object]] = {
-    "title": {"valueType": "text", "tooltip": "Display name spoken and shown for this item.", "maxLength": 80},
-    "timeZone": {"valueType": "list", "tooltip": "Timezone used when the clock speaks time."},
-    "use24Hour": {"valueType": "boolean", "tooltip": "Use 24 hour format instead of AM/PM."},
-}
-
-
-def validate_update(_item: WorldItem, next_params: dict) -> dict:
-    """Validate and normalize clock params."""
-
-    time_zone = str(next_params.get("timeZone", DEFAULT_TIME_ZONE)).strip()
-    if time_zone not in TIME_ZONE_OPTIONS:
-        raise ValueError(f"timeZone must be one of {', '.join(TIME_ZONE_OPTIONS)}.")
-    use_24_hour = parse_bool_like_or_none(next_params.get("use24Hour"))
-    if use_24_hour is None:
-        raise ValueError("use24Hour must be on/off.")
-    next_params["timeZone"] = time_zone
-    next_params["use24Hour"] = use_24_hour
-    return keep_only_known_params(next_params, PARAM_KEYS)
-
-
-def use_item(item: WorldItem, nickname: str, clock_formatter: Callable[[dict], str]) -> ItemUseResult:
-    """Read current clock time based on item configuration."""
-
-    display_time = clock_formatter(item.params)
-    return ItemUseResult(
-        self_message=f"{item.title} says {display_time}.",
-        others_message=f"{nickname} checks {item.title}. {item.title} says {display_time}.",
-    )
+__all__ = [
+    "LABEL",
+    "TOOLTIP",
+    "EDITABLE_PROPERTIES",
+    "CAPABILITIES",
+    "USE_SOUND",
+    "EMIT_SOUND",
+    "USE_COOLDOWN_MS",
+    "EMIT_RANGE",
+    "DIRECTIONAL",
+    "DEFAULT_TITLE",
+    "DEFAULT_TIME_ZONE",
+    "TIME_ZONE_OPTIONS",
+    "DEFAULT_PARAMS",
+    "PROPERTY_METADATA",
+    "validate_update",
+    "use_item",
+]

server/app/items/types/clock/validator.py

@@ -0,0 +1,21 @@
+"""Clock item validation/normalization."""
+
+from __future__ import annotations
+
+from ....models import WorldItem
+from ...helpers import keep_only_known_params, parse_bool_like_or_none
+from .definition import DEFAULT_TIME_ZONE, PARAM_KEYS, TIME_ZONE_OPTIONS
+
+
+def validate_update(_item: WorldItem, next_params: dict) -> dict:
+    """Validate and normalize clock params."""
+
+    time_zone = str(next_params.get("timeZone", DEFAULT_TIME_ZONE)).strip()
+    if time_zone not in TIME_ZONE_OPTIONS:
+        raise ValueError(f"timeZone must be one of {', '.join(TIME_ZONE_OPTIONS)}.")
+    use_24_hour = parse_bool_like_or_none(next_params.get("use24Hour"))
+    if use_24_hour is None:
+        raise ValueError("use24Hour must be on/off.")
+    next_params["timeZone"] = time_zone
+    next_params["use24Hour"] = use_24_hour
+    return keep_only_known_params(next_params, PARAM_KEYS)

server/app/items/types/dice/__init__.py

@@ -1 +1,3 @@
-"""Item type plugin package."""
+"""Item type package exposing plugin module surface."""
+
+from .module import *  # noqa: F401,F403

server/app/items/types/dice/actions.py

@@ -0,0 +1,32 @@
+"""Dice item use actions."""
+
+from __future__ import annotations
+
+import random
+from typing import Callable
+
+from ....item_types import ItemUseResult
+from ....models import WorldItem
+
+
+def use_item(item: WorldItem, nickname: str, _clock_formatter: Callable[[dict], str]) -> ItemUseResult:
+    """Roll dice and report result."""
+
+    try:
+        sides = max(1, min(100, int(item.params.get("sides", 6))))
+        number = max(1, min(100, int(item.params.get("number", 2))))
+    except (TypeError, ValueError):
+        sides = 6
+        number = 2
+    rolls = [random.randint(1, sides) for _ in range(number)]
+    total = sum(rolls)
+    rolls_text = ", ".join(str(value) for value in rolls)
+    if number == 1:
+        return ItemUseResult(
+            self_message=f"You rolled {item.title}: {rolls_text}.",
+            others_message=f"{nickname} rolled {item.title}: {rolls_text}.",
+        )
+    return ItemUseResult(
+        self_message=f"You rolled {item.title}: {rolls_text} (total {total}).",
+        others_message=f"{nickname} rolled {item.title}: {rolls_text} (total {total}).",
+    )

server/app/items/types/dice/definition.py

@@ -0,0 +1,30 @@
+"""Dice item static metadata and defaults."""
+
+from __future__ import annotations
+
+LABEL = "dice"
+TOOLTIP = "Great for drinking games or boredom."
+EDITABLE_PROPERTIES: tuple[str, ...] = ("title", "sides", "number")
+CAPABILITIES: tuple[str, ...] = ("editable", "carryable", "deletable", "usable")
+USE_SOUND = "sounds/roll.ogg"
+EMIT_SOUND: str | None = None
+USE_COOLDOWN_MS = 1000
+EMIT_RANGE = 15
+DIRECTIONAL = False
+DEFAULT_TITLE = "Dice"
+DEFAULT_PARAMS: dict = {"sides": 6, "number": 2}
+PARAM_KEYS: tuple[str, ...] = ("sides", "number")
+
+PROPERTY_METADATA: dict[str, dict[str, object]] = {
+    "title": {"valueType": "text", "tooltip": "Display name spoken and shown for this item.", "maxLength": 80},
+    "sides": {
+        "valueType": "number",
+        "tooltip": "Number of sides on each die.",
+        "range": {"min": 1, "max": 100, "step": 1},
+    },
+    "number": {
+        "valueType": "number",
+        "tooltip": "How many dice to roll per use.",
+        "range": {"min": 1, "max": 100, "step": 1},
+    },
+}

server/app/items/types/dice/module.py

@@ -1,75 +1,37 @@
-"""Dice item schema metadata and behavior."""
+"""Dice item plugin module surface."""
 
 from __future__ import annotations
 
-import random
-from typing import Callable
+from .actions import use_item
+from .definition import (
+    CAPABILITIES,
+    DEFAULT_PARAMS,
+    DEFAULT_TITLE,
+    DIRECTIONAL,
+    EDITABLE_PROPERTIES,
+    EMIT_RANGE,
+    EMIT_SOUND,
+    LABEL,
+    PROPERTY_METADATA,
+    TOOLTIP,
+    USE_COOLDOWN_MS,
+    USE_SOUND,
+)
+from .validator import validate_update
 
-from ....item_types import ItemUseResult
-from ....models import WorldItem
-from ...helpers import keep_only_known_params
-
-LABEL = "dice"
-TOOLTIP = "Great for drinking games or boredom."
-EDITABLE_PROPERTIES: tuple[str, ...] = ("title", "sides", "number")
-CAPABILITIES: tuple[str, ...] = ("editable", "carryable", "deletable", "usable")
-USE_SOUND = "sounds/roll.ogg"
-EMIT_SOUND: str | None = None
-USE_COOLDOWN_MS = 1000
-EMIT_RANGE = 15
-DIRECTIONAL = False
-DEFAULT_TITLE = "Dice"
-DEFAULT_PARAMS: dict = {"sides": 6, "number": 2}
-PARAM_KEYS: tuple[str, ...] = ("sides", "number")
-
-PROPERTY_METADATA: dict[str, dict[str, object]] = {
-    "title": {"valueType": "text", "tooltip": "Display name spoken and shown for this item.", "maxLength": 80},
-    "sides": {
-        "valueType": "number",
-        "tooltip": "Number of sides on each die.",
-        "range": {"min": 1, "max": 100, "step": 1},
-    },
-    "number": {
-        "valueType": "number",
-        "tooltip": "How many dice to roll per use.",
-        "range": {"min": 1, "max": 100, "step": 1},
-    },
-}
-
-
-def validate_update(_item: WorldItem, next_params: dict) -> dict:
-    """Validate and normalize dice params."""
-
-    try:
-        sides = int(next_params.get("sides", 6))
-        number = int(next_params.get("number", 2))
-    except (TypeError, ValueError) as exc:
-        raise ValueError("Dice values must be numbers.") from exc
-    if not (1 <= sides <= 100 and 1 <= number <= 100):
-        raise ValueError("Dice sides and number must be between 1 and 100.")
-    next_params["sides"] = sides
-    next_params["number"] = number
-    return keep_only_known_params(next_params, PARAM_KEYS)
-
-
-def use_item(item: WorldItem, nickname: str, _clock_formatter: Callable[[dict], str]) -> ItemUseResult:
-    """Roll dice and report result."""
-
-    try:
-        sides = max(1, min(100, int(item.params.get("sides", 6))))
-        number = max(1, min(100, int(item.params.get("number", 2))))
-    except (TypeError, ValueError):
-        sides = 6
-        number = 2
-    rolls = [random.randint(1, sides) for _ in range(number)]
-    total = sum(rolls)
-    rolls_text = ", ".join(str(value) for value in rolls)
-    if number == 1:
-        return ItemUseResult(
-            self_message=f"You rolled {item.title}: {rolls_text}.",
-            others_message=f"{nickname} rolled {item.title}: {rolls_text}.",
-        )
-    return ItemUseResult(
-        self_message=f"You rolled {item.title}: {rolls_text} (total {total}).",
-        others_message=f"{nickname} rolled {item.title}: {rolls_text} (total {total}).",
-    )
+__all__ = [
+    "LABEL",
+    "TOOLTIP",
+    "EDITABLE_PROPERTIES",
+    "CAPABILITIES",
+    "USE_SOUND",
+    "EMIT_SOUND",
+    "USE_COOLDOWN_MS",
+    "EMIT_RANGE",
+    "DIRECTIONAL",
+    "DEFAULT_TITLE",
+    "DEFAULT_PARAMS",
+    "PROPERTY_METADATA",
+    "validate_update",
+    "use_item",
+]

server/app/items/types/dice/validator.py

@@ -0,0 +1,22 @@
+"""Dice item validation/normalization."""
+
+from __future__ import annotations
+
+from ....models import WorldItem
+from ...helpers import keep_only_known_params
+from .definition import PARAM_KEYS
+
+
+def validate_update(_item: WorldItem, next_params: dict) -> dict:
+    """Validate and normalize dice params."""
+
+    try:
+        sides = int(next_params.get("sides", 6))
+        number = int(next_params.get("number", 2))
+    except (TypeError, ValueError) as exc:
+        raise ValueError("Dice values must be numbers.") from exc
+    if not (1 <= sides <= 100 and 1 <= number <= 100):
+        raise ValueError("Dice sides and number must be between 1 and 100.")
+    next_params["sides"] = sides
+    next_params["number"] = number
+    return keep_only_known_params(next_params, PARAM_KEYS)

server/app/items/types/piano/__init__.py

@@ -1 +1,3 @@
-"""Item type plugin package."""
+"""Item type package exposing plugin module surface."""
+
+from .module import *  # noqa: F401,F403

server/app/items/types/piano/actions.py

@@ -0,0 +1,17 @@
+"""Piano item use actions."""
+
+from __future__ import annotations
+
+from typing import Callable
+
+from ....item_types import ItemUseResult
+from ....models import WorldItem
+
+
+def use_item(item: WorldItem, nickname: str, _clock_formatter: Callable[[dict], str]) -> ItemUseResult:
+    """Enter piano play mode for the user who used the item."""
+
+    return ItemUseResult(
+        self_message=f"You begin playing {item.title}.",
+        others_message=f"{nickname} begins playing {item.title}.",
+    )

server/app/items/types/piano/definition.py

@@ -0,0 +1,99 @@
+"""Piano item static metadata and defaults."""
+
+from __future__ import annotations
+
+LABEL = "piano"
+TOOLTIP = "Playable keyboard instrument with multiple synth voices."
+EDITABLE_PROPERTIES: tuple[str, ...] = (
+    "title",
+    "instrument",
+    "voiceMode",
+    "octave",
+    "attack",
+    "decay",
+    "release",
+    "brightness",
+    "emitRange",
+)
+CAPABILITIES: tuple[str, ...] = ("editable", "carryable", "deletable", "usable")
+USE_SOUND: str | None = None
+EMIT_SOUND: str | None = None
+USE_COOLDOWN_MS = 1000
+EMIT_RANGE = 15
+DIRECTIONAL = False
+DEFAULT_TITLE = "piano"
+DEFAULT_PARAMS: dict = {
+    "instrument": "piano",
+    "voiceMode": "poly",
+    "octave": 0,
+    "attack": 15,
+    "decay": 45,
+    "release": 35,
+    "brightness": 55,
+    "emitRange": 15,
+    "songId": "unterlandersheimweh",
+}
+PARAM_KEYS: tuple[str, ...] = ("instrument", "voiceMode", "octave", "attack", "decay", "release", "brightness", "emitRange", "songId")
+
+INSTRUMENT_OPTIONS: tuple[str, ...] = (
+    "piano",
+    "electric_piano",
+    "guitar",
+    "organ",
+    "bass",
+    "violin",
+    "synth_lead",
+    "brass",
+    "nintendo",
+    "drum_kit",
+)
+VOICE_MODE_OPTIONS: tuple[str, ...] = ("poly", "mono")
+
+DEFAULT_ENVELOPE_BY_INSTRUMENT: dict[str, tuple[int, int, int, int, str, int]] = {
+    "piano": (15, 45, 35, 55, "poly", 0),
+    "electric_piano": (12, 40, 30, 62, "poly", 0),
+    "guitar": (8, 35, 25, 50, "poly", 0),
+    "organ": (25, 70, 45, 48, "poly", 0),
+    "bass": (2, 24, 18, 34, "mono", -1),
+    "violin": (22, 75, 55, 58, "mono", 0),
+    "synth_lead": (6, 30, 22, 72, "poly", 0),
+    "brass": (10, 45, 30, 60, "mono", 0),
+    "nintendo": (1, 24, 15, 85, "poly", 0),
+    "drum_kit": (1, 22, 12, 68, "poly", 0),
+}
+
+PROPERTY_METADATA: dict[str, dict[str, object]] = {
+    "title": {"valueType": "text", "tooltip": "Display name spoken and shown for this item.", "maxLength": 80},
+    "instrument": {"valueType": "list", "tooltip": "Instrument voice used when playing this piano."},
+    "voiceMode": {"valueType": "list", "tooltip": "Mono plays one note at a time; poly allows chords."},
+    "octave": {
+        "valueType": "number",
+        "tooltip": "Shifts played notes in octaves. -1 is one octave down.",
+        "range": {"min": -2, "max": 2, "step": 1},
+    },
+    "attack": {
+        "valueType": "number",
+        "tooltip": "How quickly notes ramp in. Lower is sharper; higher is softer.",
+        "range": {"min": 0, "max": 100, "step": 1},
+    },
+    "decay": {
+        "valueType": "number",
+        "tooltip": "How long notes ring out after the initial hit.",
+        "range": {"min": 0, "max": 100, "step": 1},
+    },
+    "release": {
+        "valueType": "number",
+        "tooltip": "How long notes continue after key release.",
+        "range": {"min": 0, "max": 100, "step": 1},
+    },
+    "brightness": {
+        "valueType": "number",
+        "tooltip": "Tone brightness; higher values sound brighter.",
+        "range": {"min": 0, "max": 100, "step": 1},
+    },
+    "emitRange": {
+        "valueType": "number",
+        "tooltip": "Maximum distance in squares where this piano can be heard.",
+        "range": {"min": 5, "max": 20, "step": 1},
+    },
+}

server/app/items/types/piano/module.py

@@ -1,193 +1,41 @@
-"""Piano item schema metadata and behavior."""
+"""Piano item plugin module surface."""
 
 from __future__ import annotations
 
-from typing import Callable
-
-from ....item_types import ItemUseResult
-from ....models import WorldItem
-from ...helpers import keep_only_known_params
-
-LABEL = "piano"
-TOOLTIP = "Playable keyboard instrument with multiple synth voices."
-EDITABLE_PROPERTIES: tuple[str, ...] = (
-    "title",
-    "instrument",
-    "voiceMode",
-    "octave",
-    "attack",
-    "decay",
-    "release",
-    "brightness",
-    "emitRange",
+from .actions import use_item
+from .definition import (
+    CAPABILITIES,
+    DEFAULT_PARAMS,
+    DEFAULT_TITLE,
+    DIRECTIONAL,
+    EDITABLE_PROPERTIES,
+    EMIT_RANGE,
+    EMIT_SOUND,
+    INSTRUMENT_OPTIONS,
+    LABEL,
+    PROPERTY_METADATA,
+    TOOLTIP,
+    USE_COOLDOWN_MS,
+    USE_SOUND,
+    VOICE_MODE_OPTIONS,
 )
-CAPABILITIES: tuple[str, ...] = ("editable", "carryable", "deletable", "usable")
-USE_SOUND: str | None = None
-EMIT_SOUND: str | None = None
-USE_COOLDOWN_MS = 1000
-EMIT_RANGE = 15
-DIRECTIONAL = False
-DEFAULT_TITLE = "piano"
-DEFAULT_PARAMS: dict = {
-    "instrument": "piano",
-    "voiceMode": "poly",
-    "octave": 0,
-    "attack": 15,
-    "decay": 45,
-    "release": 35,
-    "brightness": 55,
-    "emitRange": 15,
-    "songId": "unterlandersheimweh",
-}
-PARAM_KEYS: tuple[str, ...] = ("instrument", "voiceMode", "octave", "attack", "decay", "release", "brightness", "emitRange", "songId")
+from .validator import validate_update
 
-INSTRUMENT_OPTIONS: tuple[str, ...] = (
-    "piano",
-    "electric_piano",
-    "guitar",
-    "organ",
-    "bass",
-    "violin",
-    "synth_lead",
-    "brass",
-    "nintendo",
-    "drum_kit",
-)
-VOICE_MODE_OPTIONS: tuple[str, ...] = ("poly", "mono")
-
-DEFAULT_ENVELOPE_BY_INSTRUMENT: dict[str, tuple[int, int, int, int, str, int]] = {
-    "piano": (15, 45, 35, 55, "poly", 0),
-    "electric_piano": (12, 40, 30, 62, "poly", 0),
-    "guitar": (8, 35, 25, 50, "poly", 0),
-    "organ": (25, 70, 45, 48, "poly", 0),
-    "bass": (2, 24, 18, 34, "mono", -1),
-    "violin": (22, 75, 55, 58, "mono", 0),
-    "synth_lead": (6, 30, 22, 72, "poly", 0),
-    "brass": (10, 45, 30, 60, "mono", 0),
-    "nintendo": (1, 24, 15, 85, "poly", 0),
-    "drum_kit": (1, 22, 12, 68, "poly", 0),
-}
-
-PROPERTY_METADATA: dict[str, dict[str, object]] = {
-    "title": {"valueType": "text", "tooltip": "Display name spoken and shown for this item.", "maxLength": 80},
-    "instrument": {"valueType": "list", "tooltip": "Instrument voice used when playing this piano."},
-    "voiceMode": {"valueType": "list", "tooltip": "Mono plays one note at a time; poly allows chords."},
-    "octave": {
-        "valueType": "number",
-        "tooltip": "Shifts played notes in octaves. -1 is one octave down.",
-        "range": {"min": -2, "max": 2, "step": 1},
-    },
-    "attack": {
-        "valueType": "number",
-        "tooltip": "How quickly notes ramp in. Lower is sharper; higher is softer.",
-        "range": {"min": 0, "max": 100, "step": 1},
-    },
-    "decay": {
-        "valueType": "number",
-        "tooltip": "How long notes ring out after the initial hit.",
-        "range": {"min": 0, "max": 100, "step": 1},
-    },
-    "release": {
-        "valueType": "number",
-        "tooltip": "How long notes continue after key release.",
-        "range": {"min": 0, "max": 100, "step": 1},
-    },
-    "brightness": {
-        "valueType": "number",
-        "tooltip": "Tone brightness; higher values sound brighter.",
-        "range": {"min": 0, "max": 100, "step": 1},
-    },
-    "emitRange": {
-        "valueType": "number",
-        "tooltip": "Maximum distance in squares where this piano can be heard.",
-        "range": {"min": 5, "max": 20, "step": 1},
-    },
-}
-
-
-def validate_update(_item: WorldItem, next_params: dict) -> dict:
-    """Validate and normalize piano params."""
-
-    # Song references are server-managed and not directly editable from client updates.
-    preserved_song_id = _item.params.get("songId")
-    next_params.pop("songId", None)
-
-    instrument = str(next_params.get("instrument", "piano")).strip().lower()
-    if instrument not in INSTRUMENT_OPTIONS:
-        raise ValueError(f"instrument must be one of: {', '.join(INSTRUMENT_OPTIONS)}.")
-    previous_instrument = str(_item.params.get("instrument", "piano")).strip().lower()
-    next_params["instrument"] = instrument
-
-    voice_mode = str(next_params.get("voiceMode", _item.params.get("voiceMode", "poly"))).strip().lower()
-    if voice_mode not in VOICE_MODE_OPTIONS:
-        raise ValueError("voiceMode must be one of: poly, mono.")
-    next_params["voiceMode"] = voice_mode
-
-    try:
-        octave = int(next_params.get("octave", _item.params.get("octave", 0)))
-    except (TypeError, ValueError) as exc:
-        raise ValueError("octave must be an integer between -2 and 2.") from exc
-    if not (-2 <= octave <= 2):
-        raise ValueError("octave must be between -2 and 2.")
-    next_params["octave"] = octave
-
-    try:
-        attack = int(next_params.get("attack", 15))
-    except (TypeError, ValueError) as exc:
-        raise ValueError("attack must be an integer between 0 and 100.") from exc
-    if not (0 <= attack <= 100):
-        raise ValueError("attack must be between 0 and 100.")
-    try:
-        decay = int(next_params.get("decay", 45))
-    except (TypeError, ValueError) as exc:
-        raise ValueError("decay must be an integer between 0 and 100.") from exc
-    if not (0 <= decay <= 100):
-        raise ValueError("decay must be between 0 and 100.")
-
-    try:
-        release = int(next_params.get("release", 35))
-    except (TypeError, ValueError) as exc:
-        raise ValueError("release must be an integer between 0 and 100.") from exc
-    if not (0 <= release <= 100):
-        raise ValueError("release must be between 0 and 100.")
-
-    try:
-        brightness = int(next_params.get("brightness", 55))
-    except (TypeError, ValueError) as exc:
-        raise ValueError("brightness must be an integer between 0 and 100.") from exc
-    if not (0 <= brightness <= 100):
-        raise ValueError("brightness must be between 0 and 100.")
-
-    # When instrument changes, reset envelope to instrument-appropriate defaults.
-    if instrument != previous_instrument:
-        attack, decay, release, brightness, voice_mode, octave = DEFAULT_ENVELOPE_BY_INSTRUMENT.get(
-            instrument, (15, 45, 35, 55, "poly", 0)
-        )
-        next_params["voiceMode"] = voice_mode
-        next_params["octave"] = octave
-    next_params["attack"] = attack
-    next_params["decay"] = decay
-    next_params["release"] = release
-    next_params["brightness"] = brightness
-
-    try:
-        emit_range = int(next_params.get("emitRange", 15))
-    except (TypeError, ValueError) as exc:
-        raise ValueError("emitRange must be an integer between 5 and 20.") from exc
-    if not (5 <= emit_range <= 20):
-        raise ValueError("emitRange must be between 5 and 20.")
-    next_params["emitRange"] = emit_range
-
-    if isinstance(preserved_song_id, str) and preserved_song_id.strip():
-        next_params["songId"] = preserved_song_id.strip()
-
-    return keep_only_known_params(next_params, PARAM_KEYS)
-
-
-def use_item(item: WorldItem, nickname: str, _clock_formatter: Callable[[dict], str]) -> ItemUseResult:
-    """Enter piano play mode for the user who used the item."""
-
-    return ItemUseResult(
-        self_message=f"You begin playing {item.title}.",
-        others_message=f"{nickname} begins playing {item.title}.",
-    )
+__all__ = [
+    "LABEL",
+    "TOOLTIP",
+    "EDITABLE_PROPERTIES",
+    "CAPABILITIES",
+    "USE_SOUND",
+    "EMIT_SOUND",
+    "USE_COOLDOWN_MS",
+    "EMIT_RANGE",
+    "DIRECTIONAL",
+    "DEFAULT_TITLE",
+    "DEFAULT_PARAMS",
+    "PROPERTY_METADATA",
+    "INSTRUMENT_OPTIONS",
+    "VOICE_MODE_OPTIONS",
+    "validate_update",
+    "use_item",
+]

server/app/items/types/piano/validator.py

@@ -0,0 +1,86 @@
+"""Piano item validation/normalization."""
+
+from __future__ import annotations
+
+from ....models import WorldItem
+from ...helpers import keep_only_known_params
+from .definition import DEFAULT_ENVELOPE_BY_INSTRUMENT, INSTRUMENT_OPTIONS, PARAM_KEYS, VOICE_MODE_OPTIONS
+
+
+def validate_update(item: WorldItem, next_params: dict) -> dict:
+    """Validate and normalize piano params."""
+
+    # Song references are server-managed and not directly editable from client updates.
+    preserved_song_id = item.params.get("songId")
+    next_params.pop("songId", None)
+
+    instrument = str(next_params.get("instrument", "piano")).strip().lower()
+    if instrument not in INSTRUMENT_OPTIONS:
+        raise ValueError(f"instrument must be one of: {', '.join(INSTRUMENT_OPTIONS)}.")
+    previous_instrument = str(item.params.get("instrument", "piano")).strip().lower()
+    next_params["instrument"] = instrument
+
+    voice_mode = str(next_params.get("voiceMode", item.params.get("voiceMode", "poly"))).strip().lower()
+    if voice_mode not in VOICE_MODE_OPTIONS:
+        raise ValueError("voiceMode must be one of: poly, mono.")
+    next_params["voiceMode"] = voice_mode
+
+    try:
+        octave = int(next_params.get("octave", item.params.get("octave", 0)))
+    except (TypeError, ValueError) as exc:
+        raise ValueError("octave must be an integer between -2 and 2.") from exc
+    if not (-2 <= octave <= 2):
+        raise ValueError("octave must be between -2 and 2.")
+    next_params["octave"] = octave
+
+    try:
+        attack = int(next_params.get("attack", 15))
+    except (TypeError, ValueError) as exc:
+        raise ValueError("attack must be an integer between 0 and 100.") from exc
+    if not (0 <= attack <= 100):
+        raise ValueError("attack must be between 0 and 100.")
+    try:
+        decay = int(next_params.get("decay", 45))
+    except (TypeError, ValueError) as exc:
+        raise ValueError("decay must be an integer between 0 and 100.") from exc
+    if not (0 <= decay <= 100):
+        raise ValueError("decay must be between 0 and 100.")
+
+    try:
+        release = int(next_params.get("release", 35))
+    except (TypeError, ValueError) as exc:
+        raise ValueError("release must be an integer between 0 and 100.") from exc
+    if not (0 <= release <= 100):
+        raise ValueError("release must be between 0 and 100.")
+
+    try:
+        brightness = int(next_params.get("brightness", 55))
+    except (TypeError, ValueError) as exc:
+        raise ValueError("brightness must be an integer between 0 and 100.") from exc
+    if not (0 <= brightness <= 100):
+        raise ValueError("brightness must be between 0 and 100.")
+
+    # When instrument changes, reset envelope to instrument-appropriate defaults.
+    if instrument != previous_instrument:
+        attack, decay, release, brightness, voice_mode, octave = DEFAULT_ENVELOPE_BY_INSTRUMENT.get(
+            instrument, (15, 45, 35, 55, "poly", 0)
+        )
+        next_params["voiceMode"] = voice_mode
+        next_params["octave"] = octave
+    next_params["attack"] = attack
+    next_params["decay"] = decay
+    next_params["release"] = release
+    next_params["brightness"] = brightness
+
+    try:
+        emit_range = int(next_params.get("emitRange", 15))
+    except (TypeError, ValueError) as exc:
+        raise ValueError("emitRange must be an integer between 5 and 20.") from exc
+    if not (5 <= emit_range <= 20):
+        raise ValueError("emitRange must be between 5 and 20.")
+    next_params["emitRange"] = emit_range
+
+    if isinstance(preserved_song_id, str) and preserved_song_id.strip():
+        next_params["songId"] = preserved_song_id.strip()
+
+    return keep_only_known_params(next_params, PARAM_KEYS)

server/app/items/types/radio_station/__init__.py

@@ -1 +1,3 @@
-"""Item type plugin package."""
+"""Item type package exposing plugin module surface."""
+
+from .module import *  # noqa: F401,F403

server/app/items/types/radio_station/actions.py

@@ -0,0 +1,21 @@
+"""Radio item use actions."""
+
+from __future__ import annotations
+
+from typing import Callable
+
+from ....item_types import ItemUseResult
+from ....models import WorldItem
+from ...helpers import toggle_bool_param
+
+
+def use_item(item: WorldItem, nickname: str, _clock_formatter: Callable[[dict], str]) -> ItemUseResult:
+    """Toggle radio on/off when used."""
+
+    next_enabled = toggle_bool_param(item.params, "enabled", default=True)
+    state_text = "on" if next_enabled else "off"
+    return ItemUseResult(
+        self_message=f"You turn {state_text} {item.title}.",
+        others_message=f"{nickname} turns {state_text} {item.title}.",
+        updated_params={**item.params, "enabled": next_enabled},
+    )

server/app/items/types/radio_station/definition.py

@@ -0,0 +1,76 @@
+"""Radio item static metadata and defaults."""
+
+from __future__ import annotations
+
+LABEL = "radio"
+TOOLTIP = "Can play stations from the Internet. Tune multiple to the same station and they will sync up."
+EDITABLE_PROPERTIES: tuple[str, ...] = (
+    "title",
+    "streamUrl",
+    "enabled",
+    "mediaVolume",
+    "mediaChannel",
+    "mediaEffect",
+    "mediaEffectValue",
+    "facing",
+    "emitRange",
+)
+CAPABILITIES: tuple[str, ...] = ("editable", "carryable", "deletable", "usable")
+USE_SOUND: str | None = None
+EMIT_SOUND: str | None = None
+USE_COOLDOWN_MS = 1000
+EMIT_RANGE = 20
+DIRECTIONAL = True
+DEFAULT_TITLE = "radio"
+DEFAULT_PARAMS: dict = {
+    "streamUrl": "",
+    "enabled": True,
+    "mediaVolume": 50,
+    "mediaChannel": "stereo",
+    "mediaEffect": "off",
+    "mediaEffectValue": 50,
+    "facing": 0,
+    "emitRange": 20,
+}
+PARAM_KEYS: tuple[str, ...] = (
+    "streamUrl",
+    "enabled",
+    "mediaVolume",
+    "mediaChannel",
+    "mediaEffect",
+    "mediaEffectValue",
+    "facing",
+    "emitRange",
+)
+
+CHANNEL_OPTIONS: tuple[str, ...] = ("stereo", "mono", "left", "right")
+EFFECT_OPTIONS: tuple[str, ...] = ("reverb", "echo", "flanger", "high_pass", "low_pass", "off")
+
+PROPERTY_METADATA: dict[str, dict[str, object]] = {
+    "title": {"valueType": "text", "tooltip": "Display name spoken and shown for this item.", "maxLength": 80},
+    "streamUrl": {"valueType": "text", "tooltip": "Audio stream URL used by this radio.", "maxLength": 2048},
+    "enabled": {"valueType": "boolean", "tooltip": "Turns playback on or off for this radio."},
+    "mediaVolume": {
+        "valueType": "number",
+        "tooltip": "Playback media volume percent for this radio.",
+        "range": {"min": 0, "max": 100, "step": 1},
+    },
+    "mediaChannel": {"valueType": "list", "tooltip": "Select how the station audio channels are rendered."},
+    "mediaEffect": {"valueType": "list", "tooltip": "Select the active radio effect."},
+    "mediaEffectValue": {
+        "valueType": "number",
+        "tooltip": "Amount for the selected effect.",
+        "range": {"min": 0, "max": 100, "step": 0.1},
+    },
+    "facing": {
+        "valueType": "number",
+        "tooltip": "Facing direction in degrees used for directional emit.",
+        "range": {"min": 0, "max": 360, "step": 1},
+        "visibleWhen": {"directional": True},
+    },
+    "emitRange": {
+        "valueType": "number",
+        "tooltip": "Maximum distance in squares for this radio's emitted audio.",
+        "range": {"min": 5, "max": 20, "step": 1},
+    },
+}

server/app/items/types/radio_station/module.py

@@ -1,163 +1,41 @@
-"""Radio item schema metadata and behavior."""
+"""Radio item plugin module surface."""
 
 from __future__ import annotations
 
-from typing import Callable
-
-from ....item_types import ItemUseResult
-from ....models import WorldItem
-from ...helpers import keep_only_known_params, toggle_bool_param
-
-LABEL = "radio"
-TOOLTIP = "Can play stations from the Internet. Tune multiple to the same station and they will sync up."
-EDITABLE_PROPERTIES: tuple[str, ...] = (
-    "title",
-    "streamUrl",
-    "enabled",
-    "mediaVolume",
-    "mediaChannel",
-    "mediaEffect",
-    "mediaEffectValue",
-    "facing",
-    "emitRange",
-)
-CAPABILITIES: tuple[str, ...] = ("editable", "carryable", "deletable", "usable")
-USE_SOUND: str | None = None
-EMIT_SOUND: str | None = None
-USE_COOLDOWN_MS = 1000
-EMIT_RANGE = 20
-DIRECTIONAL = True
-DEFAULT_TITLE = "radio"
-DEFAULT_PARAMS: dict = {
-    "streamUrl": "",
-    "enabled": True,
-    "mediaVolume": 50,
-    "mediaChannel": "stereo",
-    "mediaEffect": "off",
-    "mediaEffectValue": 50,
-    "facing": 0,
-    "emitRange": 20,
-}
-PARAM_KEYS: tuple[str, ...] = (
-    "streamUrl",
-    "enabled",
-    "mediaVolume",
-    "mediaChannel",
-    "mediaEffect",
-    "mediaEffectValue",
-    "facing",
-    "emitRange",
+from .actions import use_item
+from .definition import (
+    CAPABILITIES,
+    CHANNEL_OPTIONS,
+    DEFAULT_PARAMS,
+    DEFAULT_TITLE,
+    DIRECTIONAL,
+    EDITABLE_PROPERTIES,
+    EFFECT_OPTIONS,
+    EMIT_RANGE,
+    EMIT_SOUND,
+    LABEL,
+    PROPERTY_METADATA,
+    TOOLTIP,
+    USE_COOLDOWN_MS,
+    USE_SOUND,
 )
+from .validator import validate_update
 
-CHANNEL_OPTIONS: tuple[str, ...] = ("stereo", "mono", "left", "right")
-EFFECT_OPTIONS: tuple[str, ...] = ("reverb", "echo", "flanger", "high_pass", "low_pass", "off")
-
-PROPERTY_METADATA: dict[str, dict[str, object]] = {
-    "title": {"valueType": "text", "tooltip": "Display name spoken and shown for this item.", "maxLength": 80},
-    "streamUrl": {"valueType": "text", "tooltip": "Audio stream URL used by this radio.", "maxLength": 2048},
-    "enabled": {"valueType": "boolean", "tooltip": "Turns playback on or off for this radio."},
-    "mediaVolume": {
-        "valueType": "number",
-        "tooltip": "Playback media volume percent for this radio.",
-        "range": {"min": 0, "max": 100, "step": 1},
-    },
-    "mediaChannel": {"valueType": "list", "tooltip": "Select how the station audio channels are rendered."},
-    "mediaEffect": {"valueType": "list", "tooltip": "Select the active radio effect."},
-    "mediaEffectValue": {
-        "valueType": "number",
-        "tooltip": "Amount for the selected effect.",
-        "range": {"min": 0, "max": 100, "step": 0.1},
-    },
-    "facing": {
-        "valueType": "number",
-        "tooltip": "Facing direction in degrees used for directional emit.",
-        "range": {"min": 0, "max": 360, "step": 1},
-        "visibleWhen": {"directional": True},
-    },
-    "emitRange": {
-        "valueType": "number",
-        "tooltip": "Maximum distance in squares for this radio's emitted audio.",
-        "range": {"min": 5, "max": 20, "step": 1},
-    },
-}
-
-
-def validate_update(item: WorldItem, next_params: dict) -> dict:
-    """Validate and normalize radio params."""
-
-    stream_url = str(next_params.get("streamUrl", "")).strip()
-    if len(stream_url) > 2048:
-        raise ValueError("streamUrl must be 2048 characters or less.")
-    next_params["streamUrl"] = stream_url
-
-    enabled_value = next_params.get("enabled", True)
-    if isinstance(enabled_value, bool):
-        enabled = enabled_value
-    elif isinstance(enabled_value, (int, float)):
-        enabled = bool(enabled_value)
-    elif isinstance(enabled_value, str):
-        token = enabled_value.strip().lower()
-        if token in {"on", "true", "1", "yes"}:
-            enabled = True
-        elif token in {"off", "false", "0", "no"}:
-            enabled = False
-        else:
-            raise ValueError("enabled must be true/false or on/off.")
-    else:
-        raise ValueError("enabled must be true/false or on/off.")
-    next_params["enabled"] = enabled
-
-    try:
-        media_volume = int(next_params.get("mediaVolume", 50))
-    except (TypeError, ValueError) as exc:
-        raise ValueError("mediaVolume must be a number.") from exc
-    if not (0 <= media_volume <= 100):
-        raise ValueError("mediaVolume must be between 0 and 100.")
-    next_params["mediaVolume"] = media_volume
-
-    effect = str(next_params.get("mediaEffect", "off")).strip().lower()
-    if effect not in EFFECT_OPTIONS:
-        raise ValueError("mediaEffect must be one of reverb, echo, flanger, high_pass, low_pass, off.")
-    next_params["mediaEffect"] = effect
-
-    channel = str(next_params.get("mediaChannel", "stereo")).strip().lower()
-    if channel not in CHANNEL_OPTIONS:
-        raise ValueError("mediaChannel must be one of stereo, mono, left, right.")
-    next_params["mediaChannel"] = channel
-
-    try:
-        effect_value = float(next_params.get("mediaEffectValue", 50))
-    except (TypeError, ValueError) as exc:
-        raise ValueError("mediaEffectValue must be a number.") from exc
-    if not (0 <= effect_value <= 100):
-        raise ValueError("mediaEffectValue must be between 0 and 100.")
-    next_params["mediaEffectValue"] = round(effect_value, 1)
-
-    try:
-        facing = float(next_params.get("facing", item.params.get("facing", 0)))
-    except (TypeError, ValueError) as exc:
-        raise ValueError("facing must be a number between 0 and 360.") from exc
-    if not (0 <= facing <= 360):
-        raise ValueError("facing must be between 0 and 360.")
-    next_params["facing"] = int(round(facing))
-
-    try:
-        emit_range = int(next_params.get("emitRange", item.params.get("emitRange", 20)))
-    except (TypeError, ValueError) as exc:
-        raise ValueError("emitRange must be an integer between 5 and 20.") from exc
-    if not (5 <= emit_range <= 20):
-        raise ValueError("emitRange must be between 5 and 20.")
-    next_params["emitRange"] = emit_range
-    return keep_only_known_params(next_params, PARAM_KEYS)
-
-
-def use_item(item: WorldItem, nickname: str, _clock_formatter: Callable[[dict], str]) -> ItemUseResult:
-    """Toggle radio on/off when used."""
-
-    next_enabled = toggle_bool_param(item.params, "enabled", default=True)
-    state_text = "on" if next_enabled else "off"
-    return ItemUseResult(
-        self_message=f"You turn {state_text} {item.title}.",
-        others_message=f"{nickname} turns {state_text} {item.title}.",
-        updated_params={**item.params, "enabled": next_enabled},
-    )
+__all__ = [
+    "LABEL",
+    "TOOLTIP",
+    "EDITABLE_PROPERTIES",
+    "CAPABILITIES",
+    "USE_SOUND",
+    "EMIT_SOUND",
+    "USE_COOLDOWN_MS",
+    "EMIT_RANGE",
+    "DIRECTIONAL",
+    "DEFAULT_TITLE",
+    "DEFAULT_PARAMS",
+    "PROPERTY_METADATA",
+    "CHANNEL_OPTIONS",
+    "EFFECT_OPTIONS",
+    "validate_update",
+    "use_item",
+]

server/app/items/types/radio_station/validator.py

@@ -0,0 +1,76 @@
+"""Radio item validation/normalization."""
+
+from __future__ import annotations
+
+from ....models import WorldItem
+from ...helpers import keep_only_known_params
+from .definition import CHANNEL_OPTIONS, EFFECT_OPTIONS, PARAM_KEYS
+
+
+def validate_update(item: WorldItem, next_params: dict) -> dict:
+    """Validate and normalize radio params."""
+
+    stream_url = str(next_params.get("streamUrl", "")).strip()
+    if len(stream_url) > 2048:
+        raise ValueError("streamUrl must be 2048 characters or less.")
+    next_params["streamUrl"] = stream_url
+
+    enabled_value = next_params.get("enabled", True)
+    if isinstance(enabled_value, bool):
+        enabled = enabled_value
+    elif isinstance(enabled_value, (int, float)):
+        enabled = bool(enabled_value)
+    elif isinstance(enabled_value, str):
+        token = enabled_value.strip().lower()
+        if token in {"on", "true", "1", "yes"}:
+            enabled = True
+        elif token in {"off", "false", "0", "no"}:
+            enabled = False
+        else:
+            raise ValueError("enabled must be true/false or on/off.")
+    else:
+        raise ValueError("enabled must be true/false or on/off.")
+    next_params["enabled"] = enabled
+
+    try:
+        media_volume = int(next_params.get("mediaVolume", 50))
+    except (TypeError, ValueError) as exc:
+        raise ValueError("mediaVolume must be a number.") from exc
+    if not (0 <= media_volume <= 100):
+        raise ValueError("mediaVolume must be between 0 and 100.")
+    next_params["mediaVolume"] = media_volume
+
+    effect = str(next_params.get("mediaEffect", "off")).strip().lower()
+    if effect not in EFFECT_OPTIONS:
+        raise ValueError("mediaEffect must be one of reverb, echo, flanger, high_pass, low_pass, off.")
+    next_params["mediaEffect"] = effect
+
+    channel = str(next_params.get("mediaChannel", "stereo")).strip().lower()
+    if channel not in CHANNEL_OPTIONS:
+        raise ValueError("mediaChannel must be one of stereo, mono, left, right.")
+    next_params["mediaChannel"] = channel
+
+    try:
+        effect_value = float(next_params.get("mediaEffectValue", 50))
+    except (TypeError, ValueError) as exc:
+        raise ValueError("mediaEffectValue must be a number.") from exc
+    if not (0 <= effect_value <= 100):
+        raise ValueError("mediaEffectValue must be between 0 and 100.")
+    next_params["mediaEffectValue"] = round(effect_value, 1)
+
+    try:
+        facing = float(next_params.get("facing", item.params.get("facing", 0)))
+    except (TypeError, ValueError) as exc:
+        raise ValueError("facing must be a number between 0 and 360.") from exc
+    if not (0 <= facing <= 360):
+        raise ValueError("facing must be between 0 and 360.")
+    next_params["facing"] = int(round(facing))
+
+    try:
+        emit_range = int(next_params.get("emitRange", item.params.get("emitRange", 20)))
+    except (TypeError, ValueError) as exc:
+        raise ValueError("emitRange must be an integer between 5 and 20.") from exc
+    if not (5 <= emit_range <= 20):
+        raise ValueError("emitRange must be between 5 and 20.")
+    next_params["emitRange"] = emit_range
+    return keep_only_known_params(next_params, PARAM_KEYS)

server/app/items/types/wheel/__init__.py

@@ -1 +1,3 @@
-"""Item type plugin package."""
+"""Item type package exposing plugin module surface."""
+
+from .module import *  # noqa: F401,F403

server/app/items/types/wheel/actions.py

@@ -0,0 +1,30 @@
+"""Wheel item use actions."""
+
+from __future__ import annotations
+
+import random
+from typing import Callable
+
+from ....item_types import ItemUseResult
+from ....models import WorldItem
+
+
+def use_item(item: WorldItem, nickname: str, _clock_formatter: Callable[[dict], str]) -> ItemUseResult:
+    """Spin wheel and produce delayed landed value."""
+
+    spaces_raw = item.params.get("spaces", "")
+    if isinstance(spaces_raw, str):
+        spaces = [token.strip() for token in spaces_raw.split(",") if token.strip()]
+    elif isinstance(spaces_raw, list):
+        spaces = [str(token).strip() for token in spaces_raw if str(token).strip()]
+    else:
+        spaces = []
+    if not spaces:
+        raise ValueError("wheel spaces must contain at least one comma-delimited value.")
+    landed = str(random.choice(spaces))
+    return ItemUseResult(
+        self_message=f"You spin {item.title}.",
+        others_message=f"{nickname} spins {item.title}.",
+        delayed_self_message=landed,
+        delayed_others_message=landed,
+    )

server/app/items/types/wheel/definition.py

@@ -0,0 +1,25 @@
+"""Wheel item static metadata and defaults."""
+
+from __future__ import annotations
+
+LABEL = "wheel"
+TOOLTIP = "Spin to win fabulous prizes."
+EDITABLE_PROPERTIES: tuple[str, ...] = ("title", "spaces")
+CAPABILITIES: tuple[str, ...] = ("editable", "carryable", "deletable", "usable")
+USE_SOUND = "sounds/spin.ogg"
+EMIT_SOUND: str | None = None
+USE_COOLDOWN_MS = 4000
+EMIT_RANGE = 15
+DIRECTIONAL = False
+DEFAULT_TITLE = "wheel"
+DEFAULT_PARAMS: dict = {"spaces": "yes, no"}
+PARAM_KEYS: tuple[str, ...] = ("spaces",)
+
+PROPERTY_METADATA: dict[str, dict[str, object]] = {
+    "title": {"valueType": "text", "tooltip": "Display name spoken and shown for this item.", "maxLength": 80},
+    "spaces": {
+        "valueType": "text",
+        "tooltip": "Comma-delimited list of wheel spaces. Example: yes, no, maybe.",
+        "maxLength": 4000,
+    },
+}

server/app/items/types/wheel/module.py

@@ -1,72 +1,37 @@
-"""Wheel item schema metadata and behavior."""
+"""Wheel item plugin module surface."""
 
 from __future__ import annotations
 
-import random
-from typing import Callable
+from .actions import use_item
+from .definition import (
+    CAPABILITIES,
+    DEFAULT_PARAMS,
+    DEFAULT_TITLE,
+    DIRECTIONAL,
+    EDITABLE_PROPERTIES,
+    EMIT_RANGE,
+    EMIT_SOUND,
+    LABEL,
+    PROPERTY_METADATA,
+    TOOLTIP,
+    USE_COOLDOWN_MS,
+    USE_SOUND,
+)
+from .validator import validate_update
 
-from ....item_types import ItemUseResult
-from ....models import WorldItem
-from ...helpers import keep_only_known_params
-
-LABEL = "wheel"
-TOOLTIP = "Spin to win fabulous prizes."
-EDITABLE_PROPERTIES: tuple[str, ...] = ("title", "spaces")
-CAPABILITIES: tuple[str, ...] = ("editable", "carryable", "deletable", "usable")
-USE_SOUND = "sounds/spin.ogg"
-EMIT_SOUND: str | None = None
-USE_COOLDOWN_MS = 4000
-EMIT_RANGE = 15
-DIRECTIONAL = False
-DEFAULT_TITLE = "wheel"
-DEFAULT_PARAMS: dict = {"spaces": "yes, no"}
-PARAM_KEYS: tuple[str, ...] = ("spaces",)
-
-PROPERTY_METADATA: dict[str, dict[str, object]] = {
-    "title": {"valueType": "text", "tooltip": "Display name spoken and shown for this item.", "maxLength": 80},
-    "spaces": {
-        "valueType": "text",
-        "tooltip": "Comma-delimited list of wheel spaces. Example: yes, no, maybe.",
-        "maxLength": 4000,
-    },
-}
-
-
-def validate_update(_item: WorldItem, next_params: dict) -> dict:
-    """Validate and normalize wheel params."""
-
-    spaces_raw = next_params.get("spaces", "")
-    if not isinstance(spaces_raw, str):
-        raise ValueError("spaces must be a comma-delimited string.")
-    if len(spaces_raw) > 4000:
-        raise ValueError("spaces must be 4000 characters or less.")
-    spaces = [token.strip() for token in spaces_raw.split(",") if token.strip()]
-    if not spaces:
-        raise ValueError("spaces must include at least one value, separated by commas.")
-    if len(spaces) > 100:
-        raise ValueError("spaces supports up to 100 values.")
-    if any(len(token) > 80 for token in spaces):
-        raise ValueError("each space must be 80 chars or less.")
-    next_params["spaces"] = ", ".join(spaces)
-    return keep_only_known_params(next_params, PARAM_KEYS)
-
-
-def use_item(item: WorldItem, nickname: str, _clock_formatter: Callable[[dict], str]) -> ItemUseResult:
-    """Spin wheel and produce delayed landed value."""
-
-    spaces_raw = item.params.get("spaces", "")
-    if isinstance(spaces_raw, str):
-        spaces = [token.strip() for token in spaces_raw.split(",") if token.strip()]
-    elif isinstance(spaces_raw, list):
-        spaces = [str(token).strip() for token in spaces_raw if str(token).strip()]
-    else:
-        spaces = []
-    if not spaces:
-        raise ValueError("wheel spaces must contain at least one comma-delimited value.")
-    landed = str(random.choice(spaces))
-    return ItemUseResult(
-        self_message=f"You spin {item.title}.",
-        others_message=f"{nickname} spins {item.title}.",
-        delayed_self_message=landed,
-        delayed_others_message=landed,
-    )
+__all__ = [
+    "LABEL",
+    "TOOLTIP",
+    "EDITABLE_PROPERTIES",
+    "CAPABILITIES",
+    "USE_SOUND",
+    "EMIT_SOUND",
+    "USE_COOLDOWN_MS",
+    "EMIT_RANGE",
+    "DIRECTIONAL",
+    "DEFAULT_TITLE",
+    "DEFAULT_PARAMS",
+    "PROPERTY_METADATA",
+    "validate_update",
+    "use_item",
+]

server/app/items/types/wheel/validator.py

@@ -0,0 +1,26 @@
+"""Wheel item validation/normalization."""
+
+from __future__ import annotations
+
+from ....models import WorldItem
+from ...helpers import keep_only_known_params
+from .definition import PARAM_KEYS
+
+
+def validate_update(_item: WorldItem, next_params: dict) -> dict:
+    """Validate and normalize wheel params."""
+
+    spaces_raw = next_params.get("spaces", "")
+    if not isinstance(spaces_raw, str):
+        raise ValueError("spaces must be a comma-delimited string.")
+    if len(spaces_raw) > 4000:
+        raise ValueError("spaces must be 4000 characters or less.")
+    spaces = [token.strip() for token in spaces_raw.split(",") if token.strip()]
+    if not spaces:
+        raise ValueError("spaces must include at least one value, separated by commas.")
+    if len(spaces) > 100:
+        raise ValueError("spaces supports up to 100 values.")
+    if any(len(token) > 80 for token in spaces):
+        raise ValueError("each space must be 80 chars or less.")
+    next_params["spaces"] = ", ".join(spaces)
+    return keep_only_known_params(next_params, PARAM_KEYS)

server/app/items/types/widget/__init__.py

@@ -1 +1,3 @@
-"""Item type plugin package."""
+"""Item type package exposing plugin module surface."""
+
+from .module import *  # noqa: F401,F403

server/app/items/types/widget/actions.py

@@ -0,0 +1,21 @@
+"""Widget item use actions."""
+
+from __future__ import annotations
+
+from typing import Callable
+
+from ....item_types import ItemUseResult
+from ....models import WorldItem
+from ...helpers import toggle_bool_param
+
+
+def use_item(item: WorldItem, nickname: str, _clock_formatter: Callable[[dict], str]) -> ItemUseResult:
+    """Toggle enabled state for widget."""
+
+    next_enabled = toggle_bool_param(item.params, "enabled", default=True)
+    state_text = "on" if next_enabled else "off"
+    return ItemUseResult(
+        self_message=f"You turn {state_text} {item.title}.",
+        others_message=f"{nickname} turns {state_text} {item.title}.",
+        updated_params={**item.params, "enabled": next_enabled},
+    )

server/app/items/types/widget/definition.py

@@ -0,0 +1,102 @@
+"""Widget item static metadata and defaults."""
+
+from __future__ import annotations
+
+LABEL = "widget"
+TOOLTIP = "A basic item. Make it a beacon or whatever you want."
+EDITABLE_PROPERTIES: tuple[str, ...] = (
+    "title",
+    "enabled",
+    "directional",
+    "facing",
+    "emitRange",
+    "emitVolume",
+    "emitSoundSpeed",
+    "emitSoundTempo",
+    "emitEffect",
+    "emitEffectValue",
+    "useSound",
+    "emitSound",
+)
+CAPABILITIES: tuple[str, ...] = ("editable", "carryable", "deletable", "usable")
+USE_SOUND: str | None = None
+EMIT_SOUND: str | None = None
+USE_COOLDOWN_MS = 1000
+EMIT_RANGE = 15
+DIRECTIONAL = False
+DEFAULT_TITLE = "widget"
+DEFAULT_PARAMS: dict = {
+    "enabled": True,
+    "directional": False,
+    "facing": 0,
+    "emitRange": 15,
+    "emitVolume": 100,
+    "emitSoundSpeed": 50,
+    "emitSoundTempo": 50,
+    "emitEffect": "off",
+    "emitEffectValue": 50,
+    "useSound": "",
+    "emitSound": "",
+}
+PARAM_KEYS: tuple[str, ...] = (
+    "enabled",
+    "directional",
+    "facing",
+    "emitRange",
+    "emitVolume",
+    "emitSoundSpeed",
+    "emitSoundTempo",
+    "emitEffect",
+    "emitEffectValue",
+    "useSound",
+    "emitSound",
+)
+EFFECT_OPTIONS: tuple[str, ...] = ("reverb", "echo", "flanger", "high_pass", "low_pass", "off")
+
+PROPERTY_METADATA: dict[str, dict[str, object]] = {
+    "title": {"valueType": "text", "tooltip": "Display name spoken and shown for this item.", "maxLength": 80},
+    "enabled": {"valueType": "boolean", "tooltip": "Turns this widget on or off."},
+    "directional": {"valueType": "boolean", "tooltip": "If on, emitted sound favors the facing direction."},
+    "facing": {
+        "valueType": "number",
+        "tooltip": "Facing direction in degrees used when directional is on.",
+        "range": {"min": 0, "max": 360, "step": 1},
+        "visibleWhen": {"directional": True},
+    },
+    "emitRange": {
+        "valueType": "number",
+        "tooltip": "Maximum distance in squares for emitted sound.",
+        "range": {"min": 1, "max": 20, "step": 1},
+    },
+    "emitVolume": {
+        "valueType": "number",
+        "tooltip": "Emitted sound volume percent.",
+        "range": {"min": 0, "max": 100, "step": 1},
+    },
+    "emitSoundSpeed": {
+        "valueType": "number",
+        "tooltip": "Playback speed/pitch percent for emitted sound. 50 is normal, 0 is half, 100 is double. Using speed and tempo together may sound weird.",
+        "range": {"min": 0, "max": 100, "step": 0.1},
+    },
+    "emitSoundTempo": {
+        "valueType": "number",
+        "tooltip": "Playback tempo percent for emitted sound. 50 is normal, 0 is half, 100 is double. Using speed and tempo together may sound weird.",
+        "range": {"min": 0, "max": 100, "step": 0.1},
+    },
+    "emitEffect": {"valueType": "list", "tooltip": "Effect applied to emitted sound."},
+    "emitEffectValue": {
+        "valueType": "number",
+        "tooltip": "Amount for emit effect.",
+        "range": {"min": 0, "max": 100, "step": 0.1},
+    },
+    "useSound": {
+        "valueType": "sound",
+        "tooltip": "Sound played on use. Filename assumes sounds folder, or use full URL.",
+        "maxLength": 2048,
+    },
+    "emitSound": {
+        "valueType": "sound",
+        "tooltip": "Looping emitted sound. Filename assumes sounds folder, or use full URL.",
+        "maxLength": 2048,
+    },
+}

server/app/items/types/widget/module.py

@@ -1,210 +1,39 @@
-"""Widget item schema metadata and behavior."""
+"""Widget item plugin module surface."""
 
 from __future__ import annotations
 
-from typing import Callable
-
-from ....item_types import ItemUseResult
-from ....models import WorldItem
-from ...helpers import keep_only_known_params, parse_bool_like, toggle_bool_param
-
-LABEL = "widget"
-TOOLTIP = "A basic item. Make it a beacon or whatever you want."
-EDITABLE_PROPERTIES: tuple[str, ...] = (
-    "title",
-    "enabled",
-    "directional",
-    "facing",
-    "emitRange",
-    "emitVolume",
-    "emitSoundSpeed",
-    "emitSoundTempo",
-    "emitEffect",
-    "emitEffectValue",
-    "useSound",
-    "emitSound",
+from .actions import use_item
+from .definition import (
+    CAPABILITIES,
+    DEFAULT_PARAMS,
+    DEFAULT_TITLE,
+    DIRECTIONAL,
+    EDITABLE_PROPERTIES,
+    EFFECT_OPTIONS,
+    EMIT_RANGE,
+    EMIT_SOUND,
+    LABEL,
+    PROPERTY_METADATA,
+    TOOLTIP,
+    USE_COOLDOWN_MS,
+    USE_SOUND,
 )
-CAPABILITIES: tuple[str, ...] = ("editable", "carryable", "deletable", "usable")
-USE_SOUND: str | None = None
-EMIT_SOUND: str | None = None
-USE_COOLDOWN_MS = 1000
-EMIT_RANGE = 15
-DIRECTIONAL = False
-DEFAULT_TITLE = "widget"
-DEFAULT_PARAMS: dict = {
-    "enabled": True,
-    "directional": False,
-    "facing": 0,
-    "emitRange": 15,
-    "emitVolume": 100,
-    "emitSoundSpeed": 50,
-    "emitSoundTempo": 50,
-    "emitEffect": "off",
-    "emitEffectValue": 50,
-    "useSound": "",
-    "emitSound": "",
-}
-PARAM_KEYS: tuple[str, ...] = (
-    "enabled",
-    "directional",
-    "facing",
-    "emitRange",
-    "emitVolume",
-    "emitSoundSpeed",
-    "emitSoundTempo",
-    "emitEffect",
-    "emitEffectValue",
-    "useSound",
-    "emitSound",
-)
-EFFECT_OPTIONS: tuple[str, ...] = ("reverb", "echo", "flanger", "high_pass", "low_pass", "off")
+from .validator import validate_update
 
-PROPERTY_METADATA: dict[str, dict[str, object]] = {
-    "title": {"valueType": "text", "tooltip": "Display name spoken and shown for this item.", "maxLength": 80},
-    "enabled": {"valueType": "boolean", "tooltip": "Turns this widget on or off."},
-    "directional": {"valueType": "boolean", "tooltip": "If on, emitted sound favors the facing direction."},
-    "facing": {
-        "valueType": "number",
-        "tooltip": "Facing direction in degrees used when directional is on.",
-        "range": {"min": 0, "max": 360, "step": 1},
-        "visibleWhen": {"directional": True},
-    },
-    "emitRange": {
-        "valueType": "number",
-        "tooltip": "Maximum distance in squares for emitted sound.",
-        "range": {"min": 1, "max": 20, "step": 1},
-    },
-    "emitVolume": {
-        "valueType": "number",
-        "tooltip": "Emitted sound volume percent.",
-        "range": {"min": 0, "max": 100, "step": 1},
-    },
-    "emitSoundSpeed": {
-        "valueType": "number",
-        "tooltip": "Playback speed/pitch percent for emitted sound. 50 is normal, 0 is half, 100 is double. Using speed and tempo together may sound weird.",
-        "range": {"min": 0, "max": 100, "step": 0.1},
-    },
-    "emitSoundTempo": {
-        "valueType": "number",
-        "tooltip": "Playback tempo percent for emitted sound. 50 is normal, 0 is half, 100 is double. Using speed and tempo together may sound weird.",
-        "range": {"min": 0, "max": 100, "step": 0.1},
-    },
-    "emitEffect": {"valueType": "list", "tooltip": "Effect applied to emitted sound."},
-    "emitEffectValue": {
-        "valueType": "number",
-        "tooltip": "Amount for emit effect.",
-        "range": {"min": 0, "max": 100, "step": 0.1},
-    },
-    "useSound": {
-        "valueType": "sound",
-        "tooltip": "Sound played on use. Filename assumes sounds folder, or use full URL.",
-        "maxLength": 2048,
-    },
-    "emitSound": {
-        "valueType": "sound",
-        "tooltip": "Looping emitted sound. Filename assumes sounds folder, or use full URL.",
-        "maxLength": 2048,
-    },
-}
-
-
-def _normalize_sound_value(raw: object) -> str:
-    """Normalize sound value to empty/URL/or sounds-relative path."""
-
-    token = str(raw or "").strip()
-    if not token:
-        return ""
-    lowered = token.lower()
-    if lowered in {"none", "off"}:
-        return ""
-    if lowered.startswith(("http://", "https://", "data:", "blob:")):
-        return token
-    if token.startswith("/sounds/"):
-        return token[1:]
-    if token.startswith("sounds/"):
-        return token
-    if "/" not in token:
-        return f"sounds/{token}"
-    return token
-
-
-def validate_update(item: WorldItem, next_params: dict) -> dict:
-    """Validate and normalize widget params."""
-
-    enabled = parse_bool_like(next_params.get("enabled", item.params.get("enabled", True)), default=True)
-    directional = parse_bool_like(next_params.get("directional", item.params.get("directional", False)), default=False)
-    next_params["enabled"] = enabled
-    next_params["directional"] = directional
-
-    try:
-        facing = float(next_params.get("facing", item.params.get("facing", 0)))
-    except (TypeError, ValueError) as exc:
-        raise ValueError("facing must be a number between 0 and 360.") from exc
-    if not (0 <= facing <= 360):
-        raise ValueError("facing must be between 0 and 360.")
-    next_params["facing"] = int(round(facing))
-
-    try:
-        emit_range = int(next_params.get("emitRange", item.params.get("emitRange", 15)))
-    except (TypeError, ValueError) as exc:
-        raise ValueError("emitRange must be an integer between 1 and 20.") from exc
-    if not (1 <= emit_range <= 20):
-        raise ValueError("emitRange must be between 1 and 20.")
-    next_params["emitRange"] = emit_range
-
-    try:
-        emit_volume = int(next_params.get("emitVolume", item.params.get("emitVolume", 100)))
-    except (TypeError, ValueError) as exc:
-        raise ValueError("emitVolume must be an integer between 0 and 100.") from exc
-    if not (0 <= emit_volume <= 100):
-        raise ValueError("emitVolume must be between 0 and 100.")
-    next_params["emitVolume"] = emit_volume
-
-    try:
-        emit_speed = float(next_params.get("emitSoundSpeed", item.params.get("emitSoundSpeed", 50)))
-    except (TypeError, ValueError) as exc:
-        raise ValueError("emitSoundSpeed must be a number between 0 and 100.") from exc
-    if not (0 <= emit_speed <= 100):
-        raise ValueError("emitSoundSpeed must be between 0 and 100.")
-    next_params["emitSoundSpeed"] = round(emit_speed, 1)
-
-    try:
-        emit_tempo = float(next_params.get("emitSoundTempo", item.params.get("emitSoundTempo", 50)))
-    except (TypeError, ValueError) as exc:
-        raise ValueError("emitSoundTempo must be a number between 0 and 100.") from exc
-    if not (0 <= emit_tempo <= 100):
-        raise ValueError("emitSoundTempo must be between 0 and 100.")
-    next_params["emitSoundTempo"] = round(emit_tempo, 1)
-
-    emit_effect = str(next_params.get("emitEffect", item.params.get("emitEffect", "off"))).strip().lower()
-    if emit_effect not in EFFECT_OPTIONS:
-        raise ValueError("emitEffect must be one of reverb, echo, flanger, high_pass, low_pass, off.")
-    next_params["emitEffect"] = emit_effect
-
-    try:
-        emit_effect_value = float(next_params.get("emitEffectValue", item.params.get("emitEffectValue", 50)))
-    except (TypeError, ValueError) as exc:
-        raise ValueError("emitEffectValue must be a number.") from exc
-    if not (0 <= emit_effect_value <= 100):
-        raise ValueError("emitEffectValue must be between 0 and 100.")
-    next_params["emitEffectValue"] = round(emit_effect_value, 1)
-
-    next_params["useSound"] = _normalize_sound_value(next_params.get("useSound", item.params.get("useSound", "")))
-    next_params["emitSound"] = _normalize_sound_value(next_params.get("emitSound", item.params.get("emitSound", "")))
-    if len(next_params["useSound"]) > 2048:
-        raise ValueError("useSound must be 2048 characters or less.")
-    if len(next_params["emitSound"]) > 2048:
-        raise ValueError("emitSound must be 2048 characters or less.")
-    return keep_only_known_params(next_params, PARAM_KEYS)
-
-
-def use_item(item: WorldItem, nickname: str, _clock_formatter: Callable[[dict], str]) -> ItemUseResult:
-    """Toggle enabled state for widget."""
-
-    next_enabled = toggle_bool_param(item.params, "enabled", default=True)
-    state_text = "on" if next_enabled else "off"
-    return ItemUseResult(
-        self_message=f"You turn {state_text} {item.title}.",
-        others_message=f"{nickname} turns {state_text} {item.title}.",
-        updated_params={**item.params, "enabled": next_enabled},
-    )
+__all__ = [
+    "LABEL",
+    "TOOLTIP",
+    "EDITABLE_PROPERTIES",
+    "CAPABILITIES",
+    "USE_SOUND",
+    "EMIT_SOUND",
+    "USE_COOLDOWN_MS",
+    "EMIT_RANGE",
+    "DIRECTIONAL",
+    "DEFAULT_TITLE",
+    "DEFAULT_PARAMS",
+    "PROPERTY_METADATA",
+    "EFFECT_OPTIONS",
+    "validate_update",
+    "use_item",
+]

server/app/items/types/widget/validator.py

@@ -0,0 +1,97 @@
+"""Widget item validation/normalization."""
+
+from __future__ import annotations
+
+from ....models import WorldItem
+from ...helpers import keep_only_known_params, parse_bool_like
+from .definition import EFFECT_OPTIONS, PARAM_KEYS
+
+
+def _normalize_sound_value(raw: object) -> str:
+    """Normalize sound value to empty/URL/or sounds-relative path."""
+
+    token = str(raw or "").strip()
+    if not token:
+        return ""
+    lowered = token.lower()
+    if lowered in {"none", "off"}:
+        return ""
+    if lowered.startswith(("http://", "https://", "data:", "blob:")):
+        return token
+    if token.startswith("/sounds/"):
+        return token[1:]
+    if token.startswith("sounds/"):
+        return token
+    if "/" not in token:
+        return f"sounds/{token}"
+    return token
+
+
+def validate_update(item: WorldItem, next_params: dict) -> dict:
+    """Validate and normalize widget params."""
+
+    enabled = parse_bool_like(next_params.get("enabled", item.params.get("enabled", True)), default=True)
+    directional = parse_bool_like(next_params.get("directional", item.params.get("directional", False)), default=False)
+    next_params["enabled"] = enabled
+    next_params["directional"] = directional
+
+    try:
+        facing = float(next_params.get("facing", item.params.get("facing", 0)))
+    except (TypeError, ValueError) as exc:
+        raise ValueError("facing must be a number between 0 and 360.") from exc
+    if not (0 <= facing <= 360):
+        raise ValueError("facing must be between 0 and 360.")
+    next_params["facing"] = int(round(facing))
+
+    try:
+        emit_range = int(next_params.get("emitRange", item.params.get("emitRange", 15)))
+    except (TypeError, ValueError) as exc:
+        raise ValueError("emitRange must be an integer between 1 and 20.") from exc
+    if not (1 <= emit_range <= 20):
+        raise ValueError("emitRange must be between 1 and 20.")
+    next_params["emitRange"] = emit_range
+
+    try:
+        emit_volume = int(next_params.get("emitVolume", item.params.get("emitVolume", 100)))
+    except (TypeError, ValueError) as exc:
+        raise ValueError("emitVolume must be an integer between 0 and 100.") from exc
+    if not (0 <= emit_volume <= 100):
+        raise ValueError("emitVolume must be between 0 and 100.")
+    next_params["emitVolume"] = emit_volume
+
+    try:
+        emit_speed = float(next_params.get("emitSoundSpeed", item.params.get("emitSoundSpeed", 50)))
+    except (TypeError, ValueError) as exc:
+        raise ValueError("emitSoundSpeed must be a number between 0 and 100.") from exc
+    if not (0 <= emit_speed <= 100):
+        raise ValueError("emitSoundSpeed must be between 0 and 100.")
+    next_params["emitSoundSpeed"] = round(emit_speed, 1)
+
+    try:
+        emit_tempo = float(next_params.get("emitSoundTempo", item.params.get("emitSoundTempo", 50)))
+    except (TypeError, ValueError) as exc:
+        raise ValueError("emitSoundTempo must be a number between 0 and 100.") from exc
+    if not (0 <= emit_tempo <= 100):
+        raise ValueError("emitSoundTempo must be between 0 and 100.")
+    next_params["emitSoundTempo"] = round(emit_tempo, 1)
+
+    emit_effect = str(next_params.get("emitEffect", item.params.get("emitEffect", "off"))).strip().lower()
+    if emit_effect not in EFFECT_OPTIONS:
+        raise ValueError("emitEffect must be one of reverb, echo, flanger, high_pass, low_pass, off.")
+    next_params["emitEffect"] = emit_effect
+
+    try:
+        emit_effect_value = float(next_params.get("emitEffectValue", item.params.get("emitEffectValue", 50)))
+    except (TypeError, ValueError) as exc:
+        raise ValueError("emitEffectValue must be a number.") from exc
+    if not (0 <= emit_effect_value <= 100):
+        raise ValueError("emitEffectValue must be between 0 and 100.")
+    next_params["emitEffectValue"] = round(emit_effect_value, 1)
+
+    next_params["useSound"] = _normalize_sound_value(next_params.get("useSound", item.params.get("useSound", "")))
+    next_params["emitSound"] = _normalize_sound_value(next_params.get("emitSound", item.params.get("emitSound", "")))
+    if len(next_params["useSound"]) > 2048:
+        raise ValueError("useSound must be 2048 characters or less.")
+    if len(next_params["emitSound"]) > 2048:
+        raise ValueError("emitSound must be 2048 characters or less.")
+    return keep_only_known_params(next_params, PARAM_KEYS)