308 lines
10 KiB
Markdown
308 lines
10 KiB
Markdown
---
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name: terrain-modify-component
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description: "Generic write: apply a `SerializedMember` diff to a terrain-related `Component` (`Terrain` or `TerrainCollider`) via ReflectorNet `TryModify`. Use 'terrain-get-component' first to inspect the structure. Route fields through the `fields` channel and properties through `props`."
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metadata:
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generated-by: mcp-plugin-dotnet
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---
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# Terrain / Modify Component (generic)
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Modify a terrain component by applying a `SerializedMember` diff via ReflectorNet.
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## Inputs
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- `gameObjectRef` — the GameObject hosting the component (required).
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- `data` — the `SerializedMember` diff to apply. Put C# *fields* in the `fields` channel and *properties* in the `props` channel (ReflectorNet resolves them separately — no cross-fallback).
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- `componentRef` — optional. Resolves a specific component when the GameObject has more than one; otherwise the first `Terrain` (or `TerrainCollider`) is used.
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## Behavior
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Finds the target terrain component, applies the diff via `Reflector.TryModify`, and on success marks the component + scene dirty and repaints. The applied logs are returned. Runs on the Unity main thread.
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## How to Call
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```bash
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unity-mcp-cli run-tool terrain-modify-component --input '{
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"gameObjectRef": "string_value",
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"data": "string_value",
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"componentRef": "string_value"
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}'
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```
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> For complex input (multi-line strings, code), save the JSON to a file and use:
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> ```bash
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> unity-mcp-cli run-tool terrain-modify-component --input-file args.json
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> ```
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>
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> Or pipe via stdin (recommended):
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> ```bash
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> unity-mcp-cli run-tool terrain-modify-component --input-file - <<'EOF'
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> {"param": "value"}
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> EOF
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> ```
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### Troubleshooting
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If `unity-mcp-cli` is not found, either install it globally (`npm install -g unity-mcp-cli`) or use `npx unity-mcp-cli` instead.
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Read the /unity-initial-setup skill for detailed installation instructions.
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## Input
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| Name | Type | Required | Description |
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|------|------|----------|-------------|
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| `gameObjectRef` | `any` | Yes | Reference to the GameObject containing the terrain component. |
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| `data` | `any` | Yes | The SerializedMember diff to apply. Fields via the 'fields' channel, properties via 'props'. |
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| `componentRef` | `any` | No | Optional reference to a specific component if the GameObject has multiple. |
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### Input JSON Schema
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```json
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{
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"type": "object",
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"properties": {
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"gameObjectRef": {
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"$ref": "#/$defs/AIGD.GameObjectRef"
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},
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"data": {
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"$ref": "#/$defs/com.IvanMurzak.ReflectorNet.Model.SerializedMember"
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},
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"componentRef": {
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"$ref": "#/$defs/AIGD.ComponentRef"
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}
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},
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"$defs": {
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"UnityEngine.EntityId": {
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"type": "string",
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"pattern": "^[0-9]+$"
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},
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"System.Type": {
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"type": "string"
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},
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"AIGD.GameObjectRef": {
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"type": "object",
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"properties": {
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"instanceID": {
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"$ref": "#/$defs/UnityEngine.EntityId",
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"description": "instanceID of the UnityEngine.Object. If it is '0' and 'path', 'name', 'assetPath' and 'assetGuid' is not provided, empty or null, then it will be used as 'null'. Priority: 1 (Recommended)"
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},
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"path": {
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"type": "string",
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"description": "Path of a GameObject in the hierarchy Sample 'character/hand/finger/particle'. Priority: 2."
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},
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"name": {
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"type": "string",
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"description": "Name of a GameObject in hierarchy. Priority: 3."
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},
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"assetType": {
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"$ref": "#/$defs/System.Type",
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"description": "Type of the asset."
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},
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"assetPath": {
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"type": "string",
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"description": "Path to the asset within the project. Starts with 'Assets/'"
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},
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"assetGuid": {
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"type": "string",
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"description": "Unique identifier for the asset."
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}
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},
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"required": [
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"instanceID"
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],
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"description": "Find GameObject in opened Prefab or in the active Scene."
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},
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"com.IvanMurzak.ReflectorNet.Model.SerializedMemberList": {
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"type": "array",
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"items": {
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"$ref": "#/$defs/com.IvanMurzak.ReflectorNet.Model.SerializedMember"
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}
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},
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"com.IvanMurzak.ReflectorNet.Model.SerializedMember": {
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"type": "object",
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"properties": {
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"typeName": {
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"type": "string",
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"description": "Full type name. Eg: 'System.String', 'System.Int32', 'UnityEngine.Vector3', etc."
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},
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"name": {
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"type": "string",
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"description": "Object name."
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},
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"value": {
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"description": "Value of the object, serialized as a non stringified JSON element. Can be null if the value is not set. Can be default value if the value is an empty object or array json."
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},
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"fields": {
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"type": "array",
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"items": {
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"$ref": "#/$defs/com.IvanMurzak.ReflectorNet.Model.SerializedMember",
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"description": "Nested field value."
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},
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"description": "Fields of the object, serialized as a list of 'SerializedMember'."
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},
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"props": {
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"type": "array",
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"items": {
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"$ref": "#/$defs/com.IvanMurzak.ReflectorNet.Model.SerializedMember",
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"description": "Nested property value."
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},
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"description": "Properties of the object, serialized as a list of 'SerializedMember'."
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}
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},
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"required": [
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"typeName"
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],
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"additionalProperties": false
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},
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"AIGD.ComponentRef": {
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"type": "object",
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"properties": {
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"index": {
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"type": "integer",
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"description": "Component 'index' attached to a gameObject. The first index is '0' and that is usually Transform or RectTransform. Priority: 2. Default value is -1."
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},
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"typeName": {
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"type": "string",
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"description": "Component type full name. Sample 'UnityEngine.Transform'. If the gameObject has two components of the same type, the output component is unpredictable. Priority: 3. Default value is null."
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},
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"instanceID": {
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"$ref": "#/$defs/UnityEngine.EntityId",
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"description": "instanceID of the UnityEngine.Object. If this is '0', then it will be used as 'null'."
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}
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},
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"required": [
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"index",
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"instanceID"
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],
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"description": "Component reference. Used to find a Component at GameObject."
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}
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},
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"required": [
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"gameObjectRef",
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"data"
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]
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}
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```
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## Output
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### Output JSON Schema
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```json
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{
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"type": "object",
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"properties": {
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"result": {
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"$ref": "#/$defs/com.IvanMurzak.Unity.MCP.Editor.API.Tool_Terrain-TerrainModifyComponentResponse"
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}
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},
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"$defs": {
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"AIGD.GameObjectRef": {
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"type": "object",
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"properties": {
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"instanceID": {
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"$ref": "#/$defs/UnityEngine.EntityId",
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"description": "instanceID of the UnityEngine.Object. If it is '0' and 'path', 'name', 'assetPath' and 'assetGuid' is not provided, empty or null, then it will be used as 'null'. Priority: 1 (Recommended)"
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},
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"path": {
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"type": "string",
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"description": "Path of a GameObject in the hierarchy Sample 'character/hand/finger/particle'. Priority: 2."
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},
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"name": {
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"type": "string",
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"description": "Name of a GameObject in hierarchy. Priority: 3."
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},
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"assetType": {
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"$ref": "#/$defs/System.Type",
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"description": "Type of the asset."
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},
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"assetPath": {
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"type": "string",
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"description": "Path to the asset within the project. Starts with 'Assets/'"
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},
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"assetGuid": {
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"type": "string",
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"description": "Unique identifier for the asset."
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}
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},
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"required": [
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"instanceID"
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],
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"description": "Find GameObject in opened Prefab or in the active Scene."
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},
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"UnityEngine.EntityId": {
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"type": "string",
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"pattern": "^[0-9]+$"
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},
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"System.Type": {
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"type": "string"
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},
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"AIGD.ComponentRef": {
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"type": "object",
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"properties": {
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"index": {
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"type": "integer",
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"description": "Component 'index' attached to a gameObject. The first index is '0' and that is usually Transform or RectTransform. Priority: 2. Default value is -1."
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},
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"typeName": {
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"type": "string",
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"description": "Component type full name. Sample 'UnityEngine.Transform'. If the gameObject has two components of the same type, the output component is unpredictable. Priority: 3. Default value is null."
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},
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"instanceID": {
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"$ref": "#/$defs/UnityEngine.EntityId",
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"description": "instanceID of the UnityEngine.Object. If this is '0', then it will be used as 'null'."
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}
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},
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"required": [
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"index",
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"instanceID"
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],
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"description": "Component reference. Used to find a Component at GameObject."
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},
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"System.String-1": {
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"type": "array",
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"items": {
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"type": "string"
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}
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},
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"com.IvanMurzak.Unity.MCP.Editor.API.Tool_Terrain-TerrainModifyComponentResponse": {
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"type": "object",
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"properties": {
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"success": {
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"type": "boolean",
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"description": "Whether the modification was successful."
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},
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"gameObjectRef": {
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"$ref": "#/$defs/AIGD.GameObjectRef",
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"description": "Reference to the GameObject containing the component."
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},
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"componentRef": {
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"$ref": "#/$defs/AIGD.ComponentRef",
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"description": "Reference to the modified component."
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},
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"componentIndex": {
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"type": "integer",
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"description": "Index of the component in the GameObject's component list."
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},
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"componentType": {
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"type": "string",
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"description": "Full type name of the modified component."
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},
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"logs": {
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"$ref": "#/$defs/System.String-1",
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"description": "Log of modifications and any warnings/errors."
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}
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},
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"required": [
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"success",
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"componentIndex"
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]
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}
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},
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"required": [
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"result"
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]
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}
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```
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