---

name: unity-light description: "Unity lighting control. Use when users want to create or configure lights (Directional, Point, Spot, Area). Triggers: light, lighting, directional light, point light, spot light, shadows, intensity, 灯光, 光照, 阴影."

Unity Light Skills

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

Skills Overview

Single Object	Batch Version	Use Batch When
light_set_properties	light_set_properties_batch	Configuring 2+ lights
light_set_enabled	light_set_enabled_batch	Toggling 2+ lights

No batch needed:

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

---

Light Types

Type	Description	Use Case
Directional	Parallel rays, no position	Sun, moon
Point	Omnidirectional from a point	Torches, bulbs
Spot	Cone-shaped beam	Flashlights, spotlights
Area	Rectangle/disc (baked only)	Windows, soft lights

---

Skills

light_create

Create a new light.

Parameter	Type	Required	Default	Description
name	string	No	"New Light"	Light name
lightType	string	No	"Point"	Directional/Point/Spot/Area
x, y, z	float	No	0,3,0	Position
r, g, b	float	No	1,1,1	Color (0-1)
intensity	float	No	1	Light intensity
range	float	No	10	Range (Point/Spot)
spotAngle	float	No	30	Cone angle (Spot only)
shadows	string	No	"soft"	none/hard/soft

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

light_set_properties

Configure light properties.

Parameter	Type	Required	Description
name	string	No*	Light object name
instanceId	int	No*	Instance ID (preferred)
r, g, b	float	No	Color (0-1)
intensity	float	No	Light intensity
range	float	No	Range (Point/Spot)
shadows	string	No	none/hard/soft

light_set_properties_batch

Configure multiple lights.

unity_skills.call_skill("light_set_properties_batch", items=[
    {"name": "Light1", "intensity": 2.0},
    {"name": "Light2", "intensity": 2.0},
    {"name": "Light3", "intensity": 2.0}
])

light_set_enabled

Enable or disable a light.

Parameter	Type	Required	Description
name	string	No*	Light object name
instanceId	int	No*	Instance ID
enabled	bool	Yes	Enable state

light_set_enabled_batch

Enable or disable multiple lights.

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.

Parameter	Type	Required	Description
name	string	No*	Light object name
instanceId	int	No*	Instance ID

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

light_find_all

Find all lights in scene.

Parameter	Type	Required	Default	Description
lightType	string	No	null	Filter by type
limit	int	No	50	Max results

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"
)

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