Unity Light

Unity Light Skills

BATCH-FIRST: Use *_batch skills when operating on 2+ lights.

Guardrails

Mode: Full-Auto required

DO NOT (common hallucinations):

• light_add does not exist → use light_create (creates a new light GameObject)
• light_set_color / light_set_intensity do not exist → use light_set_properties (sets color, intensity, range, shadows together)
• light_delete does not exist → use gameobject_delete on the light's GameObject
• light_set_shadow does not exist → use light_set_properties with shadows parameter ("none"/"hard"/"soft")

Routing:

• For lightmap baking settings → light_get_lightmap_settings (this module)
• For reflection probes → light_add_reflection_probe (this module)
• For light probe groups → light_add_probe_group (this module)

Object Targeting: All single-object skills accept name (string) and instanceId (int, preferred). Provide at least one. path (hierarchy path) is also accepted where noted.

Skills Overview

No batch needed:

• light_create - Create a light
• light_get_info - Get light information
• light_find_all - Find all lights (returns list)

Light Types

Skills

light_create

Create a new light.

Returns: {success, name, instanceId, lightType, position, color, intensity, shadows}

light_set_properties

Configure light properties.

light_set_properties_batch

Configure multiple lights. Each item accepts: name/instanceId/path (identifier) + r, g, b, intensity, range, shadows (all optional).

Returns: {success, totalItems, successCount, failCount, results: [{success, name}]}

unity_skills.call_skill("light_set_properties_batch", items=[
    {"name": "Light1", "intensity": 2.0, "r": 1, "g": 0.9, "b": 0.8},
    {"instanceId": 12345, "intensity": 1.5, "shadows": "soft"},
    {"name": "Light3", "intensity": 2.0}
])

light_set_enabled

Enable or disable a light.

light_set_enabled_batch

Enable or disable multiple lights.

Returns: {success, totalItems, successCount, failCount, results: [{success, name, enabled}]}

unity_skills.call_skill("light_set_enabled_batch", items=[
    {"name": "Torch1", "enabled": False},
    {"name": "Torch2", "enabled": False},
    {"name": "Torch3", "enabled": False}
])

light_get_info

Get detailed light information.

Returns: {name, instanceId, path, lightType, color, intensity, range, spotAngle, shadows, enabled}

light_find_all

Find all lights in scene.

Returns: {count, lights: [{name, instanceId, path, lightType, intensity, enabled}]}

Example: Efficient Lighting Setup

import unity_skills

# BAD: 4 API calls
unity_skills.call_skill("light_set_properties", name="Light1", intensity=2.0)
unity_skills.call_skill("light_set_properties", name="Light2", intensity=2.0)
unity_skills.call_skill("light_set_properties", name="Light3", intensity=2.0)
unity_skills.call_skill("light_set_properties", name="Light4", intensity=2.0)

# GOOD: 1 API call
unity_skills.call_skill("light_set_properties_batch", items=[
    {"name": "Light1", "intensity": 2.0},
    {"name": "Light2", "intensity": 2.0},
    {"name": "Light3", "intensity": 2.0},
    {"name": "Light4", "intensity": 2.0}
])

Common Light Setups

Outdoor Scene (Sun)

unity_skills.call_skill("light_create",
    name="Sun", lightType="Directional",
    r=1, g=0.95, b=0.85, intensity=1.2, shadows="soft"
)

Indoor Scene (Ceiling Light)

unity_skills.call_skill("light_create",
    name="CeilingLight", lightType="Point",
    y=3, r=1, g=0.98, b=0.9, intensity=1.5, range=10
)

Dramatic Spotlight

unity_skills.call_skill("light_create",
    name="Spotlight", lightType="Spot",
    y=5, intensity=8, spotAngle=25, shadows="hard"
)

light_add_probe_group

Add a Light Probe Group to a GameObject. Optional grid layout: gridX/gridY/gridZ (count per axis), spacingX/spacingY/spacingZ (meters between probes).

Returns: { success, gameObject, probeCount, existed, hasGrid }

light_add_reflection_probe

Create a Reflection Probe at a position.

Returns: { success, name, instanceId, resolution, size }

light_get_lightmap_settings

Get Lightmap baking settings.

Returns: { success, bakedGI, realtimeGI, lightmapSize, lightmapPadding, isRunning, lightmapCount }

Best Practices

1. Use Directional light for main scene illumination
2. Point lights for localized sources (lamps, fires)
3. Spot lights for focused beams (flashlights, stage)
4. Limit real-time shadows for performance
5. Area lights require baking (not real-time)
6. Use intensity > 1 for HDR/bloom effects