batihandev/unity-mcp-skills/light

Unity Light Skills

Overview

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

Common Mistakes

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}]}

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}]}

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}]}

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.

No parameters.

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

RunCommand Examples

Recipe path rule: ../../recipes/light/<command>.md

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