unity-physics

Before calling any skill in this module: if you are about to call a skill with parameters guessed from its name or description, STOP — read this file (or fetch its schema via GET /skills/recommend?includeSchema=true) first. If you already have the parameter definitions from recommend/schema, you may proceed straight to dryRun.

Triggers

• Casting rays
• Testing overlaps
• Querying colliders
• Adjusting gravity/physics settings
• Cast rays, detect overlaps, query colliders, adjust gravity/physics settings

Physics Skills

Editor-time physics queries (raycast / overlap), gravity, PhysicMaterial assets, and layer collision matrix.

Operating Mode

• Approval: query-type skills (physics_raycast / physics_check_overlap / physics_get_gravity / physics_get_layer_collision etc., source marked SkillMode.SemiAuto) execute directly; mutation-type (physics_set_gravity / physics_create_material / physics_set_material / physics_set_layer_collision, marked SkillMode.FullAuto) require user grant, and after grant the server executes in one step and returns the result.
• Auto / Bypass: all skills execute directly; Auto goes through AI self-assessment, Bypass allows all.
• This moduledoes not contain Delete / PlayMode / Reload / high-risk skills, and has no Bypass-only interception items.
• Note: all skills run synchronously on the editor thread. Real physics simulation (integration, collision response) only advances in Play mode; this module only performs single-frame query + asset/global settings writes, and will not start simulation.

DO NOT (common hallucinations):

• physics_add_rigidbody / physics_add_collider do not exist → use component_add with componentType "Rigidbody"/"BoxCollider"/etc.
• physics_simulate does not exist → physics simulation runs during Play mode; this module does not step the simulation
• Raycast results use world-space coordinates

Routing:

• For adding physics components → use component module
• For physics material → use physics_create_material (this module)
• For layer collision matrix → physics_set_layer_collision (this module)

Skills

physics_raycast

Cast a ray and get hit info. Parameters:

• originX, originY, originZ (float): Origin point.
• dirX, dirY, dirZ (float): Direction vector.
• maxDistance (float, optional): Max distance (default 1000).
• layerMask (int, optional): Layer mask (default -1).

Returns: { hit: true, collider: "Cube", distance: 5.2, ... }

physics_check_overlap

Check for colliders in a sphere. Parameters:

• x, y, z (float): Center point.
• radius (float): Sphere radius.
• layerMask (int, optional): Layer mask.

physics_get_gravity

Get global gravity setting. Parameters: None.

physics_set_gravity

Set global gravity setting. Parameters:

• x, y, z (float): Gravity vector (e.g. 0, -9.81, 0).

physics_raycast_all

Cast a ray and return ALL hits (penetrating).

Parameter	Type	Required	Default	Description
originX	float	Yes	-	Ray origin X
originY	float	Yes	-	Ray origin Y
originZ	float	Yes	-	Ray origin Z
dirX	float	Yes	-	Direction X
dirY	float	Yes	-	Direction Y
dirZ	float	Yes	-	Direction Z
maxDistance	float	No	1000	Max ray distance
layerMask	int	No	-1	Layer mask filter

Returns: { count, hits: [{ objectName, instanceId, path, point, normal, distance }] }

physics_spherecast

Cast a sphere along a direction and get hit info.

Parameter	Type	Required	Default	Description
originX	float	Yes	-	Origin X
originY	float	Yes	-	Origin Y
originZ	float	Yes	-	Origin Z
dirX	float	Yes	-	Direction X
dirY	float	Yes	-	Direction Y
dirZ	float	Yes	-	Direction Z
radius	float	Yes	-	Sphere radius
maxDistance	float	No	1000	Max cast distance
layerMask	int	No	-1	Layer mask filter

Returns: { hit, objectName, instanceId, point, distance }

physics_boxcast

Cast a box along a direction and get hit info.

Parameter	Type	Required	Default	Description
originX	float	Yes	-	Origin X
originY	float	Yes	-	Origin Y
originZ	float	Yes	-	Origin Z
dirX	float	Yes	-	Direction X
dirY	float	Yes	-	Direction Y
dirZ	float	Yes	-	Direction Z
halfExtentX	float	No	0.5	Box half extent X
halfExtentY	float	No	0.5	Box half extent Y
halfExtentZ	float	No	0.5	Box half extent Z
maxDistance	float	No	1000	Max cast distance
layerMask	int	No	-1	Layer mask filter

Returns: { hit, objectName, instanceId, point, distance }

physics_overlap_box

Check for colliders overlapping a box volume.

Parameter	Type	Required	Default	Description
x	float	Yes	-	Box center X
y	float	Yes	-	Box center Y
z	float	Yes	-	Box center Z
halfExtentX	float	No	0.5	Box half extent X
halfExtentY	float	No	0.5	Box half extent Y
halfExtentZ	float	No	0.5	Box half extent Z
layerMask	int	No	-1	Layer mask filter

Returns: { count, colliders: [{ objectName, path, isTrigger }] }

physics_create_material

Create a PhysicMaterial asset.

Parameter	Type	Required	Default	Description
name	string	No	"New PhysicMaterial"	Material name
savePath	string	No	"Assets"	Save directory path
dynamicFriction	float	No	0.6	Dynamic friction value
staticFriction	float	No	0.6	Static friction value
bounciness	float	No	0	Bounciness value

Returns: { success, path }

physics_set_material

Set PhysicMaterial on a collider (supports name/instanceId/path).

Parameter	Type	Required	Default	Description
materialPath	string	Yes	-	Asset path of the PhysicMaterial
name	string	No	null	GameObject name
instanceId	int	No	0	GameObject instance ID
path	string	No	null	GameObject hierarchy path

Returns: { success, gameObject, material, collider } — material is the resolved asset path read back from the collider, and collider is the collider component's type name (e.g. BoxCollider).

physics_get_layer_collision

Get whether two layers collide.

Parameter	Type	Required	Default	Description
layer1	int	Yes	-	First layer index
layer2	int	Yes	-	Second layer index

Returns: { layer1, layer2, collisionEnabled }

physics_set_layer_collision

Set whether two layers collide.

Parameter	Type	Required	Default	Description
layer1	int	Yes	-	First layer index
layer2	int	Yes	-	Second layer index
enableCollision	bool	No	true	Whether to enable collision

Returns: { success, layer1, layer2, collisionEnabled }

---

Minimal Example

import unity_skills

# Raycast from position downward, check for hits
result = unity_skills.call_skill("physics_raycast",
    originX=0, originY=5, originZ=0,
    dirX=0, dirY=-1, dirZ=0,
    maxDistance=10
)
if result.get("hit"):
    print(f"Hit: {result['hitObjectName']} at distance {result['distance']}")

Exact Signatures

Exact names, parameters, defaults, and returns are defined by GET /skills/schema or unity_skills.get_skill_schema(), not by this file.

Common Errors

Full transport-level codes (COMPILING/RATE_LIMIT etc.) → ../../references/protocol-error-codes.md

Error	Trigger	Fix
SEMANTIC_INVALID	An invalid value was supplied, such as a zero direction vector, a name containing path separators, or an out-of-range parameter.	Provide a non-zero direction, remove path separators from the material name, and clamp values to the valid range.
TARGET_NOT_FOUND	The target GameObject has no Collider, or the requested PhysicMaterial asset could not be loaded.	Add a collider via component_add or verify the material path with asset_find, then retry.
MISSING_PARAM	A required parameter is missing, such as name in physics_create_material.	Provide the parameter named in the error; use mode=dryRun for the schema.