batihandev/unity-mcp-skills/physics

Physics Skills

Overview

Raycasts, overlap checks, and gravity settings.

Common Mistakes

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
• 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).

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

physics_spherecast

Cast a sphere along a direction and get hit info.

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

physics_boxcast

Cast a box along a direction and get hit info.

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

physics_overlap_box

Check for colliders overlapping a box volume.

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

physics_create_material

Create a PhysicMaterial asset.

Returns: { success, path }

physics_set_material

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

Returns: { success, gameObject, material }

physics_get_layer_collision

Get whether two layers collide.

Returns: { layer1, layer2, collisionEnabled }

physics_set_layer_collision

Set whether two layers collide.

Returns: { success, layer1, layer2, collisionEnabled }

RunCommand Examples

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