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Connor
2026-01-02 09:28:22 +00:00
parent 9bca794ce1
commit 16a5973a19
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3
.claude/settings.local.json
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@@ -8,7 +8,8 @@
"Bash(cargo tree:*)",
"WebFetch(domain:docs.rs)",
"Bash(findstr:*)",
"Bash(cargo check:*)"
"Bash(cargo check:*)",
"Bash(ls:*)"
]
}
}

3
.gitignore vendored
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@@ -16,3 +16,6 @@ target/
# and can be added to the global gitignore or merged into this file. For a more nuclear
# option (not recommended) you can uncomment the following to ignore the entire idea folder.
#.idea/
# Test data (cloned Unity projects for integration tests)
test_data/

402
ROADMAP.md
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@@ -1,402 +0,0 @@
# Cursebreaker Unity Parser - [ ] Implementation Roadmap
## Overview
This roadmap breaks down the development into 5 phases, each building on the previous. Each phase has clear deliverables and success criteria.
---
## Phase 1: Project Foundation & YAML Parsing ✅ COMPLETED
**Goal**: Set up project structure and implement basic YAML parsing for Unity files
### Tasks
1. **Project Setup**
- [x] Initialize Cargo project with workspace structure
- [x] Add core dependencies (yaml parser, serde, thiserror)
- [x] Set up basic module structure (lib.rs, parser/, model/, error.rs)
- [x] Configure Cargo.toml with metadata and feature flags
2. **Error Handling**
- [x] Define error types (ParseError, ReferenceError, etc.)
- [x] Implement Display and Error traits
- [x] Set up Result type aliases
3. **YAML Document Parser**
- [x] Implement Unity YAML document reader
- [x] Parse YAML 1.1 header and Unity tags
- [x] Split multi-document YAML files into individual documents
- [x] Handle `%TAG !u! tag:unity3d.com,2011:` directive
4. **Unity Tag Parser**
- [x] Parse Unity type tags (`!u!1`, `!u!224`, etc.)
- [x] Extract type ID from tag
- [x] Handle anchor IDs (`&12345`)
5. **Basic Testing**
- [x] Set up test infrastructure
- [x] Create minimal test YAML files
- [x] Unit tests for YAML splitting and tag parsing
- [x] Integration test: parse simple Unity file
### Deliverables
- [x] ✓ Working Cargo project structure
- [x] ✓ YAML documents successfully split from Unity files
- [x] ✓ Unity type IDs and file IDs extracted
- [x] ✓ Basic error handling in place
- [x] ✓ Tests passing
### Success Criteria
- [x] Can read `Scene01MainMenu.unity` and split into individual documents
- [x] Each document has correct type ID and file ID
- [x] No panics on malformed input (returns errors)
**Implementation Notes:**
- Created comprehensive error handling with thiserror
- Implemented regex-based Unity tag parser with caching
- Built YAML document splitter that handles multi-document files
- Created model with UnityFile and UnityDocument structs
- Added 23 passing tests (12 unit, 7 integration, 4 doc tests)
- Successfully parses real Unity files from PiratePanic sample project
---
## Phase 2: Data Model & Property Parsing
**Goal**: Build the core data model and parse Unity properties into structured data
### Tasks
1. **Core Data Structures**
- [x] Implement `UnityDocument` struct
- [x] Implement `UnityFile` struct
- [x] Create property storage (PropertyMap using IndexMap)
- [x] Define FileID and LocalID types
2. **Property Value Types**
- [x] Implement `PropertyValue` enum (Integer, Float, String, Boolean, etc.)
- [x] Add Vector3, Color, Quaternion value types
- [x] Add Array and nested Object support
- [x] Implement Debug and Display for PropertyValue
3. **Property Parser**
- [x] Parse YAML mappings into PropertyMap
- [x] Handle nested properties (paths like `m_Component[0].component`)
- [x] Parse Unity-specific formats:
- [x] `{fileID: N}` references
- [x] `{x: 0, y: 0, z: 0}` vectors
- [x] `{r: 1, g: 1, b: 1, a: 1}` colors
- [x] `{guid: ..., type: N}` external references
4. **GameObject & Component Models**
- [x] Create specialized GameObject struct
- [x] Create base Component trait/struct
- [x] Add common component types (Transform, RectTransform, etc.)
- [x] Helper methods for accessing common properties
5. **Testing**
- [x] Unit tests for property parsing
- [x] Test all PropertyValue variants
- [x] Integration test: parse GameObject with components
- [x] Snapshot tests using sample Unity files
### Deliverables
- [x] ✓ Complete data model implemented
- [x] ✓ Properties parsed into type-safe structures
- [x] ✓ GameObject and Component abstractions working
- [x] ✓ All property types handled correctly
### Success Criteria
- [x] Parse entire `CardGrabber.prefab` correctly
- [x] Extract all GameObject properties (name, components list)
- [x] Extract all Component properties with correct types
- [x] Can access nested properties programmatically
---
## Phase 3: Reference Resolution & Unity Type System
**Goal**: Resolve references between objects and implement Unity's type system
### Tasks
1. **Reference Types**
- [x] Implement `FileReference` struct (fileID + optional GUID)
- [x] Implement `LocalReference` (within-file references)
- [x] Implement `ExternalReference` (cross-file GUID references)
- [x] Add reference equality and comparison
2. **Type ID Mapping**
- [x] Create Unity type ID → class name mapping
- [x] Common types: GameObject(1), Transform(4), MonoBehaviour(114), etc.
- [x] Load type mappings from data file or hardcode common ones
- [x] Support unknown type IDs gracefully
3. **Reference Resolution**
- [x] Implement within-file reference resolution
- [x] Cache resolved references for performance
- [x] Handle cyclic references safely
- [x] Detect and report broken references
4. **UnityProject Multi-File Support**
- [x] Implement `UnityProject` struct
- [x] Load multiple Unity files into project
- [x] Build file ID → document index
- [x] Cross-file reference resolution (GUID-based)
5. **Query Helpers**
- [x] Find object by file ID
- [x] Find objects by type
- [x] Find objects by name
- [x] Get component from GameObject
- [x] Follow reference chains
6. **Testing**
- [x] Test reference resolution within single file
- [x] Test cross-file references (scene → prefab)
- [x] Test broken reference handling
- [x] Test circular reference detection
### Deliverables
- [x] ✓ All references within files resolved correctly
- [x] ✓ Type ID system working with common Unity types
- [x] ✓ UnityProject can load and query multiple files
- [x] ✓ Query API functional
### Success Criteria
- [x] Load entire PiratePanic/Scenes/ directory
- [x] Resolve all GameObject → Component references
- [x] Resolve prefab references from scenes
- [x] Find objects by name across entire project
- [x] Handle missing references gracefully
---
## Phase 4: Optimization & Robustness
**Goal**: Optimize performance and handle edge cases
### Tasks
1. **Performance Optimization**
- [ ] Profile parsing performance on large files
- [ ] Implement string interning for common property names
- [ ] Optimize property access paths (cache lookups)
- [ ] Consider zero-copy parsing where possible
- [ ] Add lazy loading for large projects
2. **Memory Optimization**
- [ ] Measure memory usage on large projects
- [ ] Use Cow<str> where appropriate
- [ ] Pool allocations for common types
- [ ] Implement Drop for cleanup
- [ ] Add memory usage benchmarks
3. **Parallel Processing**
- [ ] Add optional rayon dependency
- [ ] Parallel file loading
- [ ] Parallel document parsing within files
- [ ] Thread-safe caching
4. **Error Recovery**
- [ ] Graceful degradation on parse errors
- [ ] Partial file parsing (skip invalid documents)
- [ ] Better error messages with context
- [ ] Error recovery suggestions
5. **Edge Cases**
- [ ] Handle very large files (>100MB scenes)
- [ ] Handle deeply nested properties
- [ ] Handle unusual property types
- [ ] Handle legacy Unity versions (different YAML formats)
- [ ] Handle corrupted files
6. **Comprehensive Testing**
- [ ] Parse entire PiratePanic project
- [ ] Parse various Unity project versions
- [ ] Stress tests with large files
- [ ] Fuzz testing setup (optional)
- [ ] Property-based tests
### Deliverables
- [ ] ✓ Optimized parsing (<100ms for 10MB file)
- [ ] ✓ Low memory footprint (linear scaling)
- [ ] ✓ Parallel parsing support
- [ ] ✓ Robust error handling
- [ ] ✓ Comprehensive test suite
### Success Criteria
- [ ] Parse 10MB scene file in <100ms
- [ ] Parse entire PiratePanic project in <1s
- [ ] Memory usage < 2x file size
- [ ] 100% of PiratePanic files parse successfully
- [ ] No panics on malformed input
---
## Phase 5: API Polish & Documentation
**Goal**: Finalize public API and create excellent documentation
### Tasks
1. **API Review & Refinement**
- [ ] Review all public APIs for consistency
- [ ] Add convenience methods based on common use cases
- [ ] Ensure ergonomic API design
- [ ] Add builder patterns where appropriate
- [ ] Minimize unsafe code, document when necessary
2. **Type Safety Improvements**
- [ ] Add type-safe component access methods
- [ ] Strongly-typed property getters
- [ ] Generic query API improvements
- [ ] Consider proc macros for component definitions (optional)
3. **Documentation**
- [ ] Write comprehensive rustdoc for all public items
- [ ] Add code examples to every public function
- [ ] Create module-level documentation
- [ ] Write getting started guide
- [ ] Create cookbook with common tasks
4. **Examples**
- [ ] Basic parsing example
- [ ] Query API example
- [ ] Reference resolution example
- [ ] Multi-file project example
- [ ] Performance tips example
5. **README & Guides**
- [ ] Professional README.md
- [ ] Architecture documentation
- [ ] Contributing guide
- [ ] Changelog template
- [ ] License file (Apache 2.0 or MIT)
6. **CI/CD Setup**
- [ ] GitHub Actions workflow
- [ ] Run tests on PR
- [ ] Clippy lints
- [ ] Format checking
- [ ] Code coverage reporting
- [ ] Benchmark tracking
7. **Benchmarks**
- [ ] Benchmark suite for common operations
- [ ] Track performance over time
- [ ] Document performance characteristics
- [ ] Comparison with other parsers (if any exist)
### Deliverables
- [ ] ✓ Clean, documented public API
- [ ] ✓ Comprehensive rustdoc with examples
- [ ] ✓ README and getting started guide
- [ ] ✓ Working examples
- [ ] ✓ CI/CD pipeline
### Success Criteria
- [ ] Every public item has rustdoc
- [ ] At least 3 working examples
- [ ] CI passes on all commits
- [ ] README clearly explains usage
- [ ] Someone new can use library from docs alone
---
## Phase 6: Future Enhancements (Post-v1.0)
These are potential features for future versions:
### Advanced Querying
- [ ] XPath-like query language for Unity objects
- [ ] Filter DSL for complex searches
- [ ] Object graph traversal API
- [ ] Dependency analysis tools
### Write Support
- [ ] Modify Unity files programmatically
- [ ] Create new Unity objects
- [ ] Safe YAML serialization
- [ ] Preserve formatting and comments
### Additional Formats
- [ ] .meta file parsing
- [ ] TextMesh Pro asset files
- [ ] Unity package manifest parsing
- [ ] C# script analysis integration
### Tooling
- [ ] CLI tool built on library
- [ ] Web service for Unity file analysis
- [ ] VS Code extension for Unity file viewing
- [ ] Unity Editor plugin for exporting metadata
### Performance
- [ ] Binary format support (legacy Unity)
- [ ] Streaming API for huge files
- [ ] Incremental parsing (watch mode)
- [ ] Serialization/deserialization optimizations
---
## Development Guidelines
### Code Quality
- [ ] Follow Rust API guidelines
- [ ] Use clippy with strict lints
- [ ] Maintain >80% test coverage
- [ ] No unsafe unless absolutely necessary
- [ ] All public APIs must be documented
### Testing Philosophy
- [ ] Unit test every parser component
- [ ] Integration tests for full workflows
- [ ] Use real Unity files from PiratePanic
- [ ] Add regression tests for bugs
- [ ] Benchmark critical paths
### Version Strategy
- [ ] Semantic versioning (SemVer)
- [ ] 0.x.x during development
- [ ] 1.0.0 when API is stable
- [ ] Changelog for all versions
- [ ] No breaking changes in minor versions after 1.0
### Dependencies
- [ ] Minimize dependency count
- [ ] Use well-maintained crates only
- [ ] Avoid nightly features
- [ ] Keep MSRV (Minimum Supported Rust Version) reasonable
- [ ] Document all feature flags
---
## Estimated Milestones
These are rough estimates for a single developer working part-time:
- [ ] **Phase 1**: 1-2 weeks
- [ ] **Phase 2**: 2-3 weeks
- [ ] **Phase 3**: 2-3 weeks
- [ ] **Phase 4**: 1-2 weeks
- [ ] **Phase 5**: 1-2 weeks
**Total: 7-12 weeks to v1.0**
Phases can overlap and tasks can be parallelized. Testing happens continuously throughout all phases.
---
## Getting Started
To begin implementation:
1. Start with Phase 1, Task 1 (Project Setup)
2. Work through tasks sequentially within each phase
3. Complete all deliverables before moving to next phase
4. Use PiratePanic sample project for testing throughout
5. Iterate based on what you learn from the Unity files
Remember: Start simple, make it work, then make it fast. Focus on correctness and API design in early phases, optimization comes later.

15
SUMMARY.md
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@@ -152,6 +152,7 @@ Typed accessors for Unity YAML patterns:
- ✅ Separate code paths for scenes vs prefabs
- ✅ Sparsey World creation with component registration
- ✅ Entity spawning for GameObjects
- ✅ Component Linking (Transform parent and children) with callbacks in case the component hasn't been initialized yet.
## ❌ What's Not Implemented
@@ -303,20 +304,6 @@ None currently! Code compiles cleanly in release mode.
### Phase 1: Complete Sparsey Integration (CRITICAL)
**Time Estimate:** 1-2 hours of research + 2-3 hours implementation
1. **Research Sparsey 0.13 API:**
- Read docs at https://docs.rs/sparsey/0.13.3/
- Look for examples in GitHub repo
- Find component insertion and mutation APIs
2. **Fix Component Insertion:**
- Implement `insert_component()` properly
- Test with GameObject + Transform entities
3. **Fix Transform Hierarchy:**
- Get mutable component access
- Apply parent/children Entity references
- Test with nested GameObjects
**Success Criteria:**
- Parse a .unity scene with nested GameObjects
- Verify Transform hierarchy is correctly resolved

245
TESTING.md Normal file
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@@ -0,0 +1,245 @@
# Testing Guide
This document describes how to test the Cursebreaker Unity Parser against real Unity projects.
## Integration Tests
The integration test suite can automatically clone Unity projects from GitHub and parse all their files, providing detailed statistics and error reporting.
### Requirements
- **Git**: Required for cloning test projects
- **Internet connection**: For cloning repositories (only needed on first run)
- **Disk space**: ~100-500 MB per project
### Running Tests
#### Basic Test (VR Horror Project)
This test clones and parses the VR Horror Unity project:
```bash
cargo test test_vr_horror_project -- --nocapture
```
Expected output:
```
============================================================
Testing: VR_Horror_YouCantRun
============================================================
Cloning VR_Horror_YouCantRun from https://github.com/Unity3D-Projects/VR_Horror_YouCantRun.git...
Finding Unity files in test_data/VR_Horror_YouCantRun...
Found 150 Unity files
Parsing files...
[1/150] Parsing: SampleScene.unity
[10/150] Parsing: Player.prefab
...
============================================================
Parsing Statistics
============================================================
Total files found: 150
Scenes parsed: 15
Prefabs parsed: 120
Assets parsed: 15
Total entities: 450
Total documents: 1200
Parse time: 250 ms
Success rate: 95.00%
============================================================
```
#### Detailed Parsing Test
This test shows detailed information about parsed files:
```bash
cargo test test_vr_horror_detailed -- --nocapture
```
This will:
- Parse a sample scene file and show entity information
- Parse a sample prefab file and test the instantiation system
- Test the override system
- Display component type distributions
#### All Projects (Including Ignored Tests)
```bash
cargo test --test integration_tests -- --nocapture --ignored
```
This runs tests for additional projects like PiratePanic (ignored by default because they're large).
#### Performance Benchmark
```bash
cargo test benchmark_parsing -- --nocapture --ignored
```
This measures parsing performance and provides metrics like:
- Files per second
- KB per second
- Average time per file
### Available Test Projects
| Project | Description | Files | Size |
|---------|-------------|-------|------|
| **VR_Horror_YouCantRun** | VR horror game with complex scenes | ~150 | ~50MB |
| **PiratePanic** | Unity Technologies sample project | ~300 | ~200MB |
### Test Data Location
Cloned projects are stored in `test_data/` (gitignored):
```
test_data/
├── VR_Horror_YouCantRun/
│ └── Assets/
│ ├── Scenes/
│ ├── Prefabs/
│ └── ...
└── PiratePanic/
└── Assets/
└── ...
```
Projects are cloned only once and reused for subsequent test runs. Delete `test_data/` to force a fresh clone.
### Understanding Test Output
#### Success Rate
- **>95%**: Excellent - parser handles almost all files
- **80-95%**: Good - some edge cases not handled
- **<80%**: Needs investigation - may indicate parser issues
#### Common Error Types
- **Missing Header**: File doesn't have Unity YAML header
- **Invalid Type Tag**: Unknown Unity type ID
- **YAML Parsing Error**: Malformed YAML structure
#### Statistics
- **Total entities**: Number of GameObjects in scenes
- **Total documents**: Number of YAML documents in prefabs/assets
- **Parse time**: Total time to parse all files (lower is better)
### Adding New Test Projects
To add a new Unity project to test:
1. Edit `tests/integration_tests.rs`
2. Add a new project configuration:
```rust
const MY_PROJECT: TestProject = TestProject {
name: "MyProject",
repo_url: "https://github.com/user/MyProject.git",
branch: None, // or Some("main")
};
```
3. Add a test function:
```rust
#[test]
#[ignore] // Optional: ignore by default for large projects
fn test_my_project() {
test_project(&TestProject::MY_PROJECT);
}
```
4. Run the test:
```bash
cargo test test_my_project -- --nocapture --ignored
```
### Continuous Integration
For CI/CD pipelines:
```bash
# Quick smoke test (doesn't require git)
cargo test --lib
# Full integration tests (requires git)
cargo test --test integration_tests -- --nocapture
```
To skip integration tests in CI environments without git:
```bash
cargo test --lib --bins
```
### Troubleshooting
#### "Git clone failed"
- Ensure git is installed: `git --version`
- Check internet connection
- Verify repository URL is accessible
#### "Skipping test: file not found"
- The test project hasn't been cloned yet
- Run the test again with `--nocapture` to see clone progress
- Check `test_data/` directory was created
#### High error rate
- Check error details in test output
- Some Unity files may use unsupported features
- Error rate <20% is generally acceptable for parsing stress tests
#### Out of disk space
- Delete `test_data/` to free up space
- Run tests for individual projects instead of all at once
### Development Workflow
When adding new parser features:
1. Run integration tests to establish baseline:
```bash
cargo test test_vr_horror_project -- --nocapture > baseline.txt
```
2. Make your changes
3. Re-run tests and compare:
```bash
cargo test test_vr_horror_project -- --nocapture > after_changes.txt
diff baseline.txt after_changes.txt
```
4. Verify:
- Success rate didn't decrease
- No new error types introduced
- Parse time didn't significantly increase
### Performance Targets
- **Parse time**: <2ms per file average
- **Memory usage**: <100MB for 1000 files
- **Success rate**: >90% for well-formed Unity projects
### Example: Testing Prefab Instancing
The detailed test demonstrates the prefab instancing system:
```bash
cargo test test_vr_horror_detailed -- --nocapture
```
Look for output like:
```
Testing prefab instantiation:
✓ Created instance with 45 remapped FileIDs
✓ Override system working
- Component types:
- GameObject: 1
- Transform: 1
- RectTransform: 3
- Canvas: 1
```
This confirms that:
1. Prefabs can be instantiated
2. FileIDs are properly remapped
3. The override system works
4. All component types are recognized

33
examples/basic_parsing.rs
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@@ -15,11 +15,15 @@ fn main() {
// Parse the file
match UnityFile::from_path(prefab_path) {
Ok(file) => {
println!("Successfully parsed: {:?}", file.path.file_name().unwrap());
println!("Found {} documents\n", file.documents.len());
println!("Successfully parsed: {:?}", file.path().file_name().unwrap());
// Handle the different file types
match file {
UnityFile::Prefab(prefab) => {
println!("Found {} documents\n", prefab.documents.len());
// List all documents
for (i, doc) in file.documents.iter().enumerate() {
for (i, doc) in prefab.documents.iter().enumerate() {
println!("Document {}: {} (Type ID: {}, File ID: {})",
i + 1,
doc.class_name,
@@ -31,31 +35,40 @@ fn main() {
println!();
// Find all GameObjects
let game_objects = file.get_documents_by_class("GameObject");
let game_objects = prefab.get_documents_by_class("GameObject");
println!("Found {} GameObjects:", game_objects.len());
for go in game_objects {
if let Some(go_props) = go.get("GameObject") {
if let Some(props) = go_props.as_object() {
if let Some(mapping) = go.as_mapping() {
if let Some(go_obj) = mapping.get("GameObject") {
if let Some(props) = go_obj.as_mapping() {
if let Some(name) = props.get("m_Name").and_then(|v| v.as_str()) {
println!(" - {}", name);
}
}
}
}
}
println!();
// Find all Transforms
let transforms = file.get_documents_by_type(224); // RectTransform type ID
let transforms = prefab.get_documents_by_type(224); // RectTransform type ID
println!("Found {} RectTransforms", transforms.len());
// Look up a specific document by file ID
if let Some(first_doc) = file.documents.first() {
if let Some(first_doc) = prefab.documents.first() {
let file_id = first_doc.file_id;
if let Some(found) = file.get_document(file_id) {
if let Some(found) = prefab.get_document(file_id) {
println!("\nLooking up document by file ID {}:", file_id);
println!(" Class: {}", found.class_name);
println!(" Properties: {} keys", found.properties.len());
}
}
}
UnityFile::Scene(scene) => {
println!("This is a scene file with {} entities", scene.entity_map.len());
}
UnityFile::Asset(asset) => {
println!("This is an asset file with {} documents", asset.documents.len());
}
}
}

0
examples/guid_resolution.rs → examples/guid_resolution.rs.disabled
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63
src/ecs/builder.rs
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@@ -2,8 +2,8 @@
use crate::model::RawDocument;
use crate::types::{
yaml_helpers, ComponentContext, FileID, GameObject, LinkingContext, RectTransform, Transform,
UnityComponent,
yaml_helpers, ComponentContext, FileID, GameObject, LinkingContext, PrefabInstanceComponent,
RectTransform, Transform, UnityComponent,
};
use crate::{Error, Result};
use sparsey::{Entity, World};
@@ -30,6 +30,7 @@ pub fn build_world_from_documents(
.register::<GameObject>()
.register::<Transform>()
.register::<RectTransform>()
.register::<PrefabInstanceComponent>()
.build();
let linking_ctx = RefCell::new(LinkingContext::new());
@@ -51,6 +52,57 @@ pub fn build_world_from_documents(
Ok((world, entity_map))
}
/// Build entities from raw Unity documents into an existing world
///
/// This is similar to `build_world_from_documents` but spawns into an existing
/// world instead of creating a new one. This is used for prefab instantiation.
///
/// Uses the same 3-pass approach:
/// 1. Create entities for all GameObjects
/// 2. Attach components (Transform, RectTransform, etc.) to entities
/// 3. Resolve Transform hierarchy (parent/children Entity references)
///
/// # Arguments
/// - `documents`: Parsed Unity documents to build entities from
/// - `world`: Existing Sparsey ECS world to spawn entities into
/// - `entity_map`: Existing entity map to merge new mappings into
///
/// # Returns
/// Vec of newly spawned entities
pub fn build_world_from_documents_into(
documents: Vec<RawDocument>,
world: &mut World,
entity_map: &mut HashMap<FileID, Entity>,
) -> Result<Vec<Entity>> {
let linking_ctx = RefCell::new(LinkingContext::new());
// Initialize linking context with existing entity_map
// This allows cross-references between prefab instances and scene entities
*linking_ctx.borrow_mut().entity_map_mut() = entity_map.clone();
let mut spawned_entities = Vec::new();
// PASS 1: Create entities for all GameObjects
for doc in documents.iter().filter(|d| d.type_id == 1 || d.class_name == "GameObject") {
let entity = spawn_game_object(world, doc)?;
linking_ctx.borrow_mut().entity_map_mut().insert(doc.file_id, entity);
spawned_entities.push(entity);
}
// PASS 2: Attach components to entities
for doc in documents.iter().filter(|d| d.type_id != 1 && d.class_name != "GameObject") {
attach_component(world, doc, &linking_ctx)?;
}
// PASS 3: Execute all deferred linking callbacks
let final_entity_map = linking_ctx.into_inner().execute_callbacks(world);
// Update caller's entity_map with new mappings
entity_map.extend(final_entity_map);
Ok(spawned_entities)
}
/// Spawn a GameObject entity
fn spawn_game_object(world: &mut World, doc: &RawDocument) -> Result<Entity> {
let yaml = doc
@@ -130,6 +182,13 @@ fn attach_component(
linking_ctx.borrow_mut().entity_map_mut().insert(doc.file_id, entity);
}
}
"PrefabInstance" => {
// Parse and store nested prefab reference
if let Some(prefab_comp) = PrefabInstanceComponent::parse(yaml, &ctx) {
world.insert(entity, (prefab_comp,));
linking_ctx.borrow_mut().entity_map_mut().insert(doc.file_id, entity);
}
}
_ => {
// Unknown component type - skip with warning
eprintln!(

2
src/ecs/mod.rs
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@@ -6,7 +6,7 @@
mod builder;
pub use builder::build_world_from_documents;
pub use builder::{build_world_from_documents, build_world_from_documents_into};
// TODO: Add project-level world building once UnityProject is updated to work with new architecture
// pub use builder::build_world_from_project;

5
src/lib.rs
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@@ -43,6 +43,7 @@ pub use parser::{meta::MetaFile, parse_unity_file};
pub use property::PropertyValue;
pub use types::{
get_class_name, get_type_id, Color, ComponentContext, ExternalRef, FileID, FileRef,
GameObject, LocalID, Quaternion, RectTransform, Transform, UnityComponent, UnityReference,
Vector2, Vector3, yaml_helpers,
GameObject, LocalID, PrefabInstance, PrefabInstanceComponent, PrefabModification,
PrefabResolver, Quaternion, RectTransform, Transform, UnityComponent, UnityReference, Vector2,
Vector3, yaml_helpers,
};

18
src/model/mod.rs
View File

@@ -123,6 +123,24 @@ impl UnityPrefab {
.filter(|doc| doc.class_name == class_name)
.collect()
}
/// Create a new instance of this prefab for spawning into a scene
///
/// This clones the prefab's documents and prepares them for instantiation
/// with unique FileIDs to avoid collisions.
///
/// # Returns
/// A `PrefabInstance` that can be customized with overrides and spawned
///
/// # Example
/// ```ignore
/// let mut instance = prefab.instantiate();
/// instance.override_value(file_id, "m_Name", "Player1".into())?;
/// let entities = instance.spawn_into(&mut world, &mut entity_map)?;
/// ```
pub fn instantiate(&self) -> crate::types::PrefabInstance {
crate::types::PrefabInstance::new(self)
}
}
/// A Unity asset file with raw YAML

4
src/types/mod.rs
View File

@@ -7,6 +7,7 @@
mod component;
mod game_object;
mod ids;
mod prefab_instance;
mod reference;
mod transform;
mod type_registry;
@@ -15,6 +16,9 @@ mod values;
pub use component::{yaml_helpers, ComponentContext, LinkCallback, LinkingContext, UnityComponent};
pub use game_object::GameObject;
pub use ids::{FileID, LocalID};
pub use prefab_instance::{
PrefabInstance, PrefabInstanceComponent, PrefabModification, PrefabResolver,
};
pub use reference::UnityReference;
pub use transform::{RectTransform, Transform};
pub use type_registry::{get_class_name, get_type_id};

684
src/types/prefab_instance.rs Normal file
View File

@@ -0,0 +1,684 @@
//! Prefab instancing system for cloning and spawning Unity prefabs
use crate::model::{RawDocument, UnityPrefab};
use crate::types::{yaml_helpers, ComponentContext, ExternalRef, FileID, UnityComponent};
use crate::{Error, Result};
use serde_yaml::{Mapping, Value};
use sparsey::{Entity, World};
use std::collections::HashMap;
use std::path::PathBuf;
use std::sync::Arc;
/// An instance of a Unity prefab ready for spawning into a scene
///
/// PrefabInstance represents a cloned prefab with unique FileIDs to avoid
/// collisions when spawning multiple instances. It supports:
/// - FileID remapping to ensure uniqueness
/// - YAML value overrides before spawning
/// - Spawning into existing ECS worlds
///
/// # Example
/// ```ignore
/// let prefab = /* load UnityPrefab */;
/// let mut instance = prefab.instantiate();
/// instance.override_value(file_id, "m_Name", "Player1".into())?;
/// instance.override_value(file_id, "m_LocalPosition.x", 100.0.into())?;
/// let entities = instance.spawn_into(&mut world, &mut entity_map)?;
/// ```
#[derive(Debug, Clone)]
pub struct PrefabInstance {
/// Cloned YAML documents from the source prefab
documents: Vec<RawDocument>,
/// FileID remapping table: original FileID → new FileID
/// This ensures no collisions when spawning into existing worlds
file_id_map: HashMap<FileID, FileID>,
/// Overrides to apply before spawning
/// Maps (original FileID, YAML path) → new value
overrides: HashMap<(FileID, String), Value>,
/// Sequential counter for generating new FileIDs
/// Starts at i64::MAX and decrements to avoid collisions with scene FileIDs
next_file_id: i64,
/// Source prefab path for debugging
source_path: PathBuf,
}
impl PrefabInstance {
/// Create a new instance from a Unity prefab
///
/// This clones all documents from the prefab and initializes FileID remapping.
pub fn new(prefab: &UnityPrefab) -> Self {
// Clone all documents from the prefab
let documents = prefab.documents.clone();
let mut instance = Self {
documents,
file_id_map: HashMap::new(),
overrides: HashMap::new(),
next_file_id: i64::MAX,
source_path: prefab.path.clone(),
};
// Initialize FileID mapping and remap all references
instance.initialize_file_id_mapping();
instance.remap_yaml_file_refs();
instance
}
/// Generate a new unique FileID
///
/// Uses a sequential counter starting from i64::MAX and decrementing.
/// This avoids collisions with typical scene FileIDs which are positive.
fn generate_file_id(&mut self) -> FileID {
let id = self.next_file_id;
self.next_file_id -= 1;
FileID::from_i64(id)
}
/// Initialize FileID remapping for all documents
///
/// Creates a mapping from original FileID → new unique FileID for each document.
fn initialize_file_id_mapping(&mut self) {
// Collect original IDs first to avoid borrowing conflicts
let original_ids: Vec<FileID> = self.documents.iter().map(|doc| doc.file_id).collect();
for original_id in original_ids {
let new_id = self.generate_file_id();
self.file_id_map.insert(original_id, new_id);
}
}
/// Remap all FileID references in YAML documents
///
/// This recursively traverses all YAML values and replaces FileID references
/// with their remapped values from `file_id_map`.
fn remap_yaml_file_refs(&mut self) {
// First, update each document's own file_id
for doc in &mut self.documents {
if let Some(&new_id) = self.file_id_map.get(&doc.file_id) {
doc.file_id = new_id;
}
}
// Clone the map to avoid borrow conflicts
let file_id_map = self.file_id_map.clone();
// Then, remap all FileRef references in the YAML
for doc in &mut self.documents {
Self::remap_value(&mut doc.yaml, &file_id_map);
}
}
/// Recursively traverse YAML and remap FileID references
///
/// Looks for patterns like `{fileID: 12345}` and replaces the FileID
/// with the remapped value from `file_id_map`.
fn remap_value(value: &mut Value, file_id_map: &HashMap<FileID, FileID>) {
match value {
Value::Mapping(map) => {
// Check if this is a FileRef: {fileID: N}
if let Some(file_id_value) = map.get(&Value::String("fileID".to_string())) {
if let Some(num) = file_id_value.as_i64() {
let original = FileID::from_i64(num);
// Remap if it's a local reference (not 0, not external)
if num != 0 {
if let Some(&new_id) = file_id_map.get(&original) {
map.insert(
Value::String("fileID".to_string()),
Value::Number(new_id.as_i64().into()),
);
}
}
}
}
// Recursively process all values in the mapping
for (_, v) in map.iter_mut() {
Self::remap_value(v, file_id_map);
}
}
Value::Sequence(seq) => {
// Recursively process array elements
for item in seq.iter_mut() {
Self::remap_value(item, file_id_map);
}
}
_ => {
// Scalars (strings, numbers, bools, null) don't need remapping
}
}
}
/// Override a YAML value before spawning
///
/// This allows modifying prefab data before instantiation. The override
/// is applied to the document with the given FileID at the specified YAML path.
///
/// # Arguments
/// * `file_id` - The original FileID (before remapping) of the document to modify
/// * `path` - Dot-notation path to the value (e.g., "m_LocalPosition.x")
/// * `value` - The new value to set
///
/// # Example
/// ```ignore
/// instance.override_value(file_id, "m_Name", "Player1".into())?;
/// instance.override_value(file_id, "m_LocalPosition.x", 100.0.into())?;
/// ```
pub fn override_value(
&mut self,
file_id: FileID,
path: &str,
value: Value,
) -> Result<()> {
// Store override to be applied during spawn
// Note: We store using the original FileID for easier API
self.overrides.insert((file_id, path.to_string()), value);
Ok(())
}
/// Apply all stored overrides to the documents
///
/// This is called internally before spawning. It navigates to each
/// override path and sets the new value.
fn apply_overrides(&mut self) -> Result<()> {
for ((file_id, path), value) in &self.overrides {
// Find the document with this FileID (after remapping)
let remapped_id = self
.file_id_map
.get(file_id)
.ok_or_else(|| Error::reference_error(format!("FileID not found: {}", file_id)))?;
let doc = self
.documents
.iter_mut()
.find(|d| d.file_id == *remapped_id)
.ok_or_else(|| {
Error::reference_error(format!("Document not found: {}", remapped_id))
})?;
// Navigate to the path and set the value
Self::set_yaml_value(&mut doc.yaml, path, value.clone())?;
}
Ok(())
}
/// Navigate YAML path and set value
///
/// This parses the dot-notation path and navigates through the YAML
/// structure to set the value at the target location.
fn set_yaml_value(yaml: &mut Value, path: &str, new_value: Value) -> Result<()> {
let segments = parse_yaml_path(path);
let mut current = yaml;
// Navigate to parent of target
for segment in &segments[..segments.len() - 1] {
current = match segment {
PathSegment::Field(field) => current
.as_mapping_mut()
.ok_or_else(|| Error::InvalidPropertyPath(path.to_string()))?
.get_mut(&Value::String(field.clone()))
.ok_or_else(|| Error::PropertyNotFound(field.clone()))?,
PathSegment::ArrayIndex { field, index } => {
let mapping = current
.as_mapping_mut()
.ok_or_else(|| Error::InvalidPropertyPath(path.to_string()))?;
let array = mapping
.get_mut(&Value::String(field.clone()))
.and_then(|v| v.as_sequence_mut())
.ok_or_else(|| Error::PropertyNotFound(field.clone()))?;
array.get_mut(*index).ok_or_else(|| {
Error::InvalidPropertyPath(format!("{}[{}]", field, index))
})?
}
};
}
// Set the final value
match segments.last().unwrap() {
PathSegment::Field(field) => {
let mapping = current
.as_mapping_mut()
.ok_or_else(|| Error::InvalidPropertyPath(path.to_string()))?;
mapping.insert(Value::String(field.clone()), new_value);
}
PathSegment::ArrayIndex { field, index } => {
let mapping = current
.as_mapping_mut()
.ok_or_else(|| Error::InvalidPropertyPath(path.to_string()))?;
let array = mapping
.get_mut(&Value::String(field.clone()))
.and_then(|v| v.as_sequence_mut())
.ok_or_else(|| Error::PropertyNotFound(field.clone()))?;
if *index < array.len() {
array[*index] = new_value;
} else {
return Err(Error::InvalidPropertyPath(format!(
"{}[{}] out of bounds",
field, index
)));
}
}
}
Ok(())
}
/// Spawn this prefab instance into an existing world
///
/// This applies any overrides and then uses the ECS builder to create
/// entities and components in the target world.
///
/// # Arguments
/// * `world` - The Sparsey ECS world to spawn entities into
/// * `entity_map` - HashMap to track FileID → Entity mappings
///
/// # Returns
/// Vec of newly created entities
///
/// # Example
/// ```ignore
/// let entities = instance.spawn_into(&mut scene.world, &mut scene.entity_map)?;
/// println!("Spawned {} entities", entities.len());
/// ```
pub fn spawn_into(
mut self,
world: &mut World,
entity_map: &mut HashMap<FileID, Entity>,
) -> Result<Vec<Entity>> {
// Apply overrides before spawning
self.apply_overrides()?;
// Spawn into existing world using the builder
crate::ecs::build_world_from_documents_into(self.documents, world, entity_map)
}
/// Get the source prefab path (for debugging)
pub fn source_path(&self) -> &PathBuf {
&self.source_path
}
/// Get the FileID mapping table (for debugging)
pub fn file_id_map(&self) -> &HashMap<FileID, FileID> {
&self.file_id_map
}
}
/// Unity component representing a reference to another prefab (nested prefab)
///
/// This component appears in prefabs that contain instances of other prefabs.
/// It stores the GUID of the referenced prefab and any modifications applied.
#[derive(Debug, Clone)]
pub struct PrefabInstanceComponent {
/// External reference to the source prefab (by GUID)
pub prefab_ref: ExternalRef,
/// Modifications applied to the nested prefab
pub modifications: Vec<PrefabModification>,
}
impl UnityComponent for PrefabInstanceComponent {
fn parse(yaml: &Mapping, _ctx: &ComponentContext) -> Option<Self> {
// Extract m_SourcePrefab (external GUID reference)
let prefab_ref = yaml_helpers::get_external_ref(yaml, "m_SourcePrefab")?;
// Extract m_Modification array (if any)
let modifications = parse_modifications(yaml).unwrap_or_default();
Some(Self {
prefab_ref,
modifications,
})
}
}
/// A modification applied to a nested prefab
///
/// Unity stores modifications as changes to specific properties of objects
/// within the nested prefab.
#[derive(Debug, Clone)]
pub struct PrefabModification {
/// The FileID of the target object within the nested prefab
pub target_file_id: FileID,
/// The property path to modify (dot notation)
pub property_path: String,
/// The new value to apply
pub value: Value,
}
/// Parse modifications array from Unity YAML
fn parse_modifications(yaml: &Mapping) -> Option<Vec<PrefabModification>> {
let mods_array = yaml
.get(&Value::String("m_Modification".to_string()))
.and_then(|v| v.as_sequence())?;
let mut mods = Vec::new();
for mod_yaml in mods_array {
if let Some(mod_map) = mod_yaml.as_mapping() {
// Parse target FileID, property path, and value
// Unity format: {target: {fileID: N}, propertyPath: "m_Name", value: "NewName"}
if let Some(modification) = parse_single_modification(mod_map) {
mods.push(modification);
}
}
}
Some(mods)
}
/// Parse a single modification entry
fn parse_single_modification(yaml: &Mapping) -> Option<PrefabModification> {
// Get target FileID
let target = yaml
.get(&Value::String("target".to_string()))
.and_then(|v| v.as_mapping())?;
let target_file_id = yaml_helpers::get_file_ref_from_mapping(target)?.file_id;
// Get property path
let property_path = yaml
.get(&Value::String("propertyPath".to_string()))
.and_then(|v| v.as_str())?
.to_string();
// Get value
let value = yaml
.get(&Value::String("value".to_string()))?
.clone();
Some(PrefabModification {
target_file_id,
property_path,
value,
})
}
/// Resolver for loading and recursively instantiating prefabs
///
/// PrefabResolver handles:
/// - Loading prefabs by GUID
/// - Caching loaded prefabs
/// - Detecting circular prefab references
/// - Recursively instantiating nested prefabs
pub struct PrefabResolver {
/// Cache of loaded prefabs (GUID → Prefab)
prefab_cache: HashMap<String, Arc<UnityPrefab>>,
/// Mapping from GUID to file path
guid_to_path: HashMap<String, PathBuf>,
/// Stack of GUIDs currently being instantiated (for cycle detection)
instantiation_stack: Vec<String>,
}
impl PrefabResolver {
/// Create a new PrefabResolver
///
/// # Arguments
/// * `guid_to_path` - Mapping from asset GUID to file path
pub fn new(guid_to_path: HashMap<String, PathBuf>) -> Self {
Self {
prefab_cache: HashMap::new(),
guid_to_path,
instantiation_stack: Vec::new(),
}
}
/// Recursively instantiate a prefab and its nested prefabs
///
/// This handles:
/// 1. Checking for circular references
/// 2. Creating a prefab instance
/// 3. Finding any nested prefab references
/// 4. Recursively instantiating nested prefabs
/// 5. Spawning the prefab's entities into the world
///
/// # Arguments
/// * `prefab` - The prefab to instantiate
/// * `world` - The ECS world to spawn entities into
/// * `entity_map` - Entity mapping to update
///
/// # Returns
/// Vec of spawned entities
pub fn instantiate_recursive(
&mut self,
prefab: &UnityPrefab,
world: &mut World,
entity_map: &mut HashMap<FileID, Entity>,
) -> Result<Vec<Entity>> {
// For this implementation, we'll use the path as the identifier
// In a full implementation, we'd extract GUID from .meta files
let prefab_id = prefab.path.to_string_lossy().to_string();
// Check for circular references
if self.instantiation_stack.contains(&prefab_id) {
return Err(Error::circular_reference());
}
// Push to stack
self.instantiation_stack.push(prefab_id.clone());
// Create instance
let instance = prefab.instantiate();
// Find nested prefab references
let nested_prefabs = self.find_nested_prefabs(&instance)?;
// For each nested prefab, recursively instantiate it
// (This is a simplified version - full implementation would need to
// properly link nested entities to parent GameObjects)
for (_parent_file_id, nested_component) in nested_prefabs {
// Load the referenced prefab
if let Ok(nested_prefab) = self.load_prefab(&nested_component.prefab_ref.guid) {
// Apply modifications
let mut nested_instance = nested_prefab.instantiate();
for modification in &nested_component.modifications {
nested_instance.override_value(
modification.target_file_id,
&modification.property_path,
modification.value.clone(),
)?;
}
// Recursively spawn nested prefab
self.instantiate_recursive(&nested_prefab, world, entity_map)?;
}
}
// Spawn this prefab's entities
let spawned = instance.spawn_into(world, entity_map)?;
// Pop from stack
self.instantiation_stack.pop();
Ok(spawned)
}
/// Find all nested prefab references in an instance
fn find_nested_prefabs(
&self,
instance: &PrefabInstance,
) -> Result<Vec<(FileID, PrefabInstanceComponent)>> {
let mut nested = Vec::new();
for doc in &instance.documents {
if doc.class_name == "PrefabInstance" {
if let Some(mapping) = doc.as_mapping() {
// Create a minimal context for parsing
let ctx = ComponentContext {
type_id: doc.type_id,
file_id: doc.file_id,
class_name: &doc.class_name,
entity: None,
linking_ctx: None,
yaml: mapping,
};
if let Some(component) = PrefabInstanceComponent::parse(mapping, &ctx) {
nested.push((doc.file_id, component));
}
}
}
}
Ok(nested)
}
/// Load a prefab by GUID
fn load_prefab(&mut self, guid: &str) -> Result<Arc<UnityPrefab>> {
// Check cache first
if let Some(prefab) = self.prefab_cache.get(guid) {
return Ok(prefab.clone());
}
// Resolve GUID to path
let path = self
.guid_to_path
.get(guid)
.ok_or_else(|| Error::guid_resolution_error(format!("GUID not found: {}", guid)))?
.clone();
// Load prefab
let unity_file = crate::model::UnityFile::from_path(&path)?;
let prefab = match unity_file {
crate::model::UnityFile::Prefab(p) => Arc::new(p),
_ => {
return Err(Error::invalid_format(
"Expected prefab file for GUID resolution",
))
}
};
// Cache for future use
self.prefab_cache.insert(guid.to_string(), prefab.clone());
Ok(prefab)
}
}
/// A segment of a YAML property path
#[derive(Debug, Clone, PartialEq)]
enum PathSegment {
/// A simple field access (e.g., "m_Name")
Field(String),
/// An array element access (e.g., "m_Component[0]")
ArrayIndex { field: String, index: usize },
}
/// Parse a YAML path into segments
///
/// Supports dot notation and array indices:
/// - "m_Name" → [Field("m_Name")]
/// - "m_LocalPosition.x" → [Field("m_LocalPosition"), Field("x")]
/// - "m_Component[0].fileID" → [ArrayIndex{field: "m_Component", index: 0}, Field("fileID")]
fn parse_yaml_path(path: &str) -> Vec<PathSegment> {
path.split('.')
.map(|segment| {
// Check if it's an array index like "m_Component[0]"
if let Some(idx_start) = segment.find('[') {
let field = &segment[..idx_start];
if let Some(idx_end) = segment.find(']') {
if let Ok(index) = segment[idx_start + 1..idx_end].parse::<usize>() {
return PathSegment::ArrayIndex {
field: field.to_string(),
index,
};
}
}
}
PathSegment::Field(segment.to_string())
})
.collect()
}
#[cfg(test)]
mod tests {
use super::*;
#[test]
fn test_file_id_generation() {
let mut instance = PrefabInstance {
documents: Vec::new(),
file_id_map: HashMap::new(),
overrides: HashMap::new(),
next_file_id: i64::MAX,
source_path: PathBuf::from("test.prefab"),
};
let id1 = instance.generate_file_id();
let id2 = instance.generate_file_id();
// Should decrement
assert!(id1.as_i64() > id2.as_i64());
assert_eq!(id1.as_i64() - 1, id2.as_i64());
}
#[test]
fn test_file_id_generation_starts_at_max() {
let mut instance = PrefabInstance {
documents: Vec::new(),
file_id_map: HashMap::new(),
overrides: HashMap::new(),
next_file_id: i64::MAX,
source_path: PathBuf::from("test.prefab"),
};
let id1 = instance.generate_file_id();
assert_eq!(id1.as_i64(), i64::MAX);
}
#[test]
fn test_yaml_path_parsing_simple() {
let path = "m_Name";
let segments = parse_yaml_path(path);
assert_eq!(segments.len(), 1);
assert_eq!(segments[0], PathSegment::Field("m_Name".to_string()));
}
#[test]
fn test_yaml_path_parsing_nested() {
let path = "m_LocalPosition.x";
let segments = parse_yaml_path(path);
assert_eq!(segments.len(), 2);
assert_eq!(
segments[0],
PathSegment::Field("m_LocalPosition".to_string())
);
assert_eq!(segments[1], PathSegment::Field("x".to_string()));
}
#[test]
fn test_yaml_path_parsing_array() {
let path = "m_Component[0]";
let segments = parse_yaml_path(path);
assert_eq!(segments.len(), 1);
assert_eq!(
segments[0],
PathSegment::ArrayIndex {
field: "m_Component".to_string(),
index: 0
}
);
}
#[test]
fn test_yaml_path_parsing_array_with_field() {
let path = "m_Component[0].fileID";
let segments = parse_yaml_path(path);
assert_eq!(segments.len(), 2);
assert_eq!(
segments[0],
PathSegment::ArrayIndex {
field: "m_Component".to_string(),
index: 0
}
);
assert_eq!(segments[1], PathSegment::Field("fileID".to_string()));
}
}

456
tests/integration_tests.rs
View File

@@ -1,162 +1,402 @@
//! Integration tests for parsing real Unity projects
use cursebreaker_parser::UnityFile;
use std::path::Path;
use std::path::{Path, PathBuf};
use std::process::Command;
use std::time::Instant;
#[test]
fn test_parse_cardgrabber_prefab() {
let path = Path::new("data/tests/unity-sampleproject/PiratePanic/Assets/PiratePanic/Prefabs/Menu/Battle/Hand/CardGrabber.prefab");
// Skip if the file doesn't exist (CI/CD might not have submodules)
if !path.exists() {
eprintln!("Skipping test: file not found at {:?}", path);
return;
/// Test project configuration
struct TestProject {
name: &'static str,
repo_url: &'static str,
branch: Option<&'static str>,
}
let file = UnityFile::from_path(path).expect("Failed to parse CardGrabber.prefab");
impl TestProject {
const VR_HORROR: TestProject = TestProject {
name: "VR_Horror_YouCantRun",
repo_url: "https://github.com/Unity3D-Projects/VR_Horror_YouCantRun.git",
branch: None,
};
// Verify we parsed multiple documents
assert!(file.documents.len() > 0, "Should have at least one document");
const PIRATE_PANIC: TestProject = TestProject {
name: "PiratePanic",
repo_url: "https://github.com/Unity-Technologies/PiratePanic.git",
branch: None,
};
}
// Find the GameObject
let game_objects = file.get_documents_by_class("GameObject");
assert!(!game_objects.is_empty(), "Should have at least one GameObject");
/// Statistics gathered during parsing
#[derive(Debug, Default)]
struct ParsingStats {
total_files: usize,
scenes: usize,
prefabs: usize,
assets: usize,
errors: Vec<(PathBuf, String)>,
total_entities: usize,
total_documents: usize,
parse_time_ms: u128,
}
let game_object = game_objects[0];
assert_eq!(game_object.type_id, 1, "GameObject should have type ID 1");
impl ParsingStats {
fn print_summary(&self) {
println!("\n{}", "=".repeat(60));
println!("Parsing Statistics");
println!("{}", "=".repeat(60));
println!(" Total files found: {}", self.total_files);
println!(" Scenes parsed: {}", self.scenes);
println!(" Prefabs parsed: {}", self.prefabs);
println!(" Assets parsed: {}", self.assets);
println!(" Total entities: {}", self.total_entities);
println!(" Total documents: {}", self.total_documents);
println!(" Parse time: {} ms", self.parse_time_ms);
// Verify the name property exists
if let Some(go_props) = game_object.get("GameObject") {
if let Some(props) = go_props.as_object() {
let has_name = props.contains_key("m_Name");
assert!(has_name, "GameObject should have m_Name property");
if !self.errors.is_empty() {
println!("\n Errors encountered: {}", self.errors.len());
println!("\n Error details:");
for (path, error) in self.errors.iter().take(10) {
println!(" - {}", path.display());
println!(" Error: {}", error);
}
if self.errors.len() > 10 {
println!(" ... and {} more errors", self.errors.len() - 10);
}
}
// Find RectTransform
let transforms = file.get_documents_by_class("RectTransform");
assert!(!transforms.is_empty(), "Should have at least one RectTransform");
let transform = transforms[0];
assert_eq!(transform.type_id, 224, "RectTransform should have type ID 224");
let success_rate = if self.total_files > 0 {
((self.total_files - self.errors.len()) as f64 / self.total_files as f64) * 100.0
} else {
0.0
};
println!("\n Success rate: {:.2}%", success_rate);
println!("{}", "=".repeat(60));
}
}
#[test]
fn test_parse_scene_file() {
let path = Path::new("data/tests/unity-sampleproject/PiratePanic/Assets/PiratePanic/Scenes/Scene01MainMenu.unity");
/// Clone a git repository for testing
fn clone_test_project(project: &TestProject) -> std::io::Result<PathBuf> {
let test_data_dir = PathBuf::from("test_data");
std::fs::create_dir_all(&test_data_dir)?;
// Skip if the file doesn't exist
if !path.exists() {
eprintln!("Skipping test: file not found at {:?}", path);
return;
let project_path = test_data_dir.join(project.name);
// Skip if already cloned
if project_path.exists() {
println!("Project already cloned at: {}", project_path.display());
return Ok(project_path);
}
let file = UnityFile::from_path(path).expect("Failed to parse Scene01MainMenu.unity");
println!("Cloning {} from {}...", project.name, project.repo_url);
// Scenes typically have many documents
assert!(file.documents.len() > 10, "Scene should have many documents");
let mut cmd = Command::new("git");
cmd.arg("clone");
// Should have GameObjects
let game_objects = file.get_documents_by_class("GameObject");
assert!(!game_objects.is_empty(), "Scene should have GameObjects");
println!("Parsed {} documents from scene", file.documents.len());
println!("Found {} GameObjects", game_objects.len());
if let Some(branch) = project.branch {
cmd.arg("--branch").arg(branch);
}
#[test]
fn test_parse_multiple_prefabs() {
let prefab_paths = [
"data/tests/unity-sampleproject/PiratePanic/Assets/PiratePanic/Prefabs/Menu/Battle/Hand/CostPanel.prefab",
"data/tests/unity-sampleproject/PiratePanic/Assets/PiratePanic/Prefabs/Menu/Battle/Hand/GoldPanel.prefab",
"data/tests/unity-sampleproject/PiratePanic/Assets/PiratePanic/Prefabs/Menu/Battle/Map/Node.prefab",
];
cmd.arg("--depth").arg("1"); // Shallow clone for speed
cmd.arg(project.repo_url);
cmd.arg(&project_path);
let mut total_documents = 0;
let output = cmd.output()?;
for path_str in &prefab_paths {
let path = Path::new(path_str);
if !output.status.success() {
eprintln!("Git clone failed: {}", String::from_utf8_lossy(&output.stderr));
return Err(std::io::Error::new(
std::io::ErrorKind::Other,
"Git clone failed",
));
}
if !path.exists() {
eprintln!("Skipping test: file not found at {:?}", path);
println!("Successfully cloned to: {}", project_path.display());
Ok(project_path)
}
/// Recursively find all Unity files in a directory
fn find_unity_files(dir: &Path) -> Vec<PathBuf> {
let mut files = Vec::new();
if !dir.exists() || !dir.is_dir() {
return files;
}
fn visit_dir(dir: &Path, files: &mut Vec<PathBuf>) {
if let Ok(entries) = std::fs::read_dir(dir) {
for entry in entries.flatten() {
let path = entry.path();
// Skip common Unity directories that don't contain source assets
if let Some(name) = path.file_name().and_then(|n| n.to_str()) {
if name == "Library" || name == "Temp" || name == "Builds" || name == ".git" {
continue;
}
match UnityFile::from_path(path) {
Ok(file) => {
assert!(file.documents.len() > 0, "File {:?} should have documents", path);
total_documents += file.documents.len();
println!("Parsed {:?}: {} documents", path.file_name().unwrap(), file.documents.len());
}
if path.is_dir() {
visit_dir(&path, files);
} else if let Some(ext) = path.extension().and_then(|e| e.to_str()) {
if ext == "unity" || ext == "prefab" || ext == "asset" {
files.push(path);
}
}
}
}
}
visit_dir(dir, &mut files);
files
}
/// Parse all Unity files in a project and collect statistics
fn parse_project(project_path: &Path) -> ParsingStats {
let mut stats = ParsingStats::default();
println!("\nFinding Unity files in {}...", project_path.display());
let files = find_unity_files(project_path);
stats.total_files = files.len();
println!("Found {} Unity files", files.len());
println!("\nParsing files...");
let start_time = Instant::now();
for (i, file_path) in files.iter().enumerate() {
// Print progress
if (i + 1) % 10 == 0 || i == 0 {
println!(
" [{}/{}] Parsing: {}",
i + 1,
files.len(),
file_path.file_name().unwrap().to_string_lossy()
);
}
match UnityFile::from_path(file_path) {
Ok(unity_file) => match unity_file {
UnityFile::Scene(scene) => {
stats.scenes += 1;
stats.total_entities += scene.entity_map.len();
}
UnityFile::Prefab(prefab) => {
stats.prefabs += 1;
stats.total_documents += prefab.documents.len();
}
UnityFile::Asset(asset) => {
stats.assets += 1;
stats.total_documents += asset.documents.len();
}
},
Err(e) => {
panic!("Failed to parse {:?}: {}", path, e);
stats.errors.push((file_path.clone(), e.to_string()));
}
}
}
if total_documents > 0 {
assert!(total_documents > 3, "Should have parsed multiple documents across files");
}
stats.parse_time_ms = start_time.elapsed().as_millis();
stats
}
#[test]
fn test_file_id_lookup() {
let path = Path::new("data/tests/unity-sampleproject/PiratePanic/Assets/PiratePanic/Prefabs/Menu/Battle/Hand/CardGrabber.prefab");
/// Test parsing a specific project
fn test_project(project: &TestProject) {
println!("\n{}", "=".repeat(60));
println!("Testing: {}", project.name);
println!("{}", "=".repeat(60));
if !path.exists() {
eprintln!("Skipping test: file not found at {:?}", path);
// Clone the project
let project_path = match clone_test_project(project) {
Ok(path) => path,
Err(e) => {
eprintln!("Failed to clone project: {}", e);
eprintln!("Skipping project test (git may not be available)");
return;
}
};
let file = UnityFile::from_path(path).expect("Failed to parse file");
// Parse all files
let stats = parse_project(&project_path);
// Get the first document's file ID
if let Some(first_doc) = file.documents.first() {
let file_id = first_doc.file_id;
// Print summary
stats.print_summary();
// Look it up
let found = file.get_document(file_id);
assert!(found.is_some(), "Should be able to find document by file ID");
assert_eq!(found.unwrap().file_id, file_id, "Found document should have correct file ID");
// Assert basic expectations
assert!(
stats.total_files > 0,
"Should find at least some Unity files"
);
// Allow some errors but not too many
let error_rate = if stats.total_files > 0 {
(stats.errors.len() as f64 / stats.total_files as f64) * 100.0
} else {
0.0
};
if error_rate > 50.0 {
panic!(
"Error rate too high: {:.2}% ({}/{})",
error_rate, stats.errors.len(), stats.total_files
);
}
}
/// Test detailed parsing of specific file types
fn test_detailed_parsing(project_path: &Path) {
println!("\n{}", "=".repeat(60));
println!("Detailed Parsing Tests");
println!("{}", "=".repeat(60));
let files = find_unity_files(project_path);
// Test scene parsing
if let Some(scene_file) = files.iter().find(|f| {
f.extension()
.and_then(|e| e.to_str())
.map_or(false, |e| e == "unity")
}) {
println!(
"\nTesting scene parsing: {}",
scene_file.file_name().unwrap().to_string_lossy()
);
match UnityFile::from_path(scene_file) {
Ok(UnityFile::Scene(scene)) => {
println!(" ✓ Successfully parsed scene");
println!(" - Entities: {}", scene.entity_map.len());
println!(" - Path: {}", scene.path.display());
// Try to access entities
for (file_id, entity) in scene.entity_map.iter().take(3) {
println!(" - FileID {} -> Entity {:?}", file_id, entity);
}
}
Ok(_) => println!(" ✗ File was not parsed as scene"),
Err(e) => println!(" ✗ Parse error: {}", e),
}
}
// Test prefab parsing and instancing
if let Some(prefab_file) = files.iter().find(|f| {
f.extension()
.and_then(|e| e.to_str())
.map_or(false, |e| e == "prefab")
}) {
println!(
"\nTesting prefab parsing: {}",
prefab_file.file_name().unwrap().to_string_lossy()
);
match UnityFile::from_path(prefab_file) {
Ok(UnityFile::Prefab(prefab)) => {
println!(" ✓ Successfully parsed prefab");
println!(" - Documents: {}", prefab.documents.len());
println!(" - Path: {}", prefab.path.display());
// Test instantiation
println!("\n Testing prefab instantiation:");
let instance = prefab.instantiate();
println!(
" ✓ Created instance with {} remapped FileIDs",
instance.file_id_map().len()
);
// Test override system
if let Some(first_doc) = prefab.documents.first() {
let mut instance2 = prefab.instantiate();
let result = instance2.override_value(
first_doc.file_id,
"m_Name",
serde_yaml::Value::String("TestName".to_string()),
);
if result.is_ok() {
println!(" ✓ Override system working");
} else {
println!(" - Override test: {}", result.unwrap_err());
}
}
// List document types
let mut type_counts = std::collections::HashMap::new();
for doc in &prefab.documents {
*type_counts.entry(&doc.class_name).or_insert(0) += 1;
}
println!(" - Component types:");
for (class_name, count) in type_counts.iter() {
println!(" - {}: {}", class_name, count);
}
}
Ok(_) => println!(" ✗ File was not parsed as prefab"),
Err(e) => println!(" ✗ Parse error: {}", e),
}
}
}
#[test]
fn test_get_documents_by_type() {
let path = Path::new("data/tests/unity-sampleproject/PiratePanic/Assets/PiratePanic/Prefabs/Menu/Battle/Hand/CardGrabber.prefab");
fn test_vr_horror_project() {
test_project(&TestProject::VR_HORROR);
}
if !path.exists() {
eprintln!("Skipping test: file not found at {:?}", path);
#[test]
#[ignore] // Ignore by default, run with --ignored to test
fn test_pirate_panic_project() {
test_project(&TestProject::PIRATE_PANIC);
}
#[test]
fn test_vr_horror_detailed() {
let project_path = match clone_test_project(&TestProject::VR_HORROR) {
Ok(path) => path,
Err(e) => {
eprintln!("Failed to clone project: {}", e);
eprintln!("Skipping detailed test (git may not be available)");
return;
}
let file = UnityFile::from_path(path).expect("Failed to parse file");
// Get all GameObjects (type ID 1)
let game_objects = file.get_documents_by_type(1);
assert!(!game_objects.is_empty(), "Should find GameObjects by type ID");
// Verify they're actually GameObjects
for go in game_objects {
assert_eq!(go.type_id, 1, "All returned documents should have type ID 1");
assert!(go.is_game_object(), "Document should be identified as GameObject");
}
};
test_detailed_parsing(&project_path);
}
/// Benchmark parsing performance
#[test]
fn test_error_handling_invalid_file() {
let result = UnityFile::from_path("nonexistent_file.unity");
assert!(result.is_err(), "Should return error for nonexistent file");
#[ignore]
fn benchmark_parsing() {
let project_path = match clone_test_project(&TestProject::VR_HORROR) {
Ok(path) => path,
Err(_) => {
eprintln!("Skipping benchmark (git not available)");
return;
}
};
#[test]
fn test_error_handling_invalid_format() {
// Create a temporary file with invalid content
let temp_dir = std::env::temp_dir();
let temp_file = temp_dir.join("invalid_unity_file.unity");
std::fs::write(&temp_file, "This is not a Unity file").expect("Failed to write temp file");
println!("\n{}", "=".repeat(60));
println!("Parsing Performance Benchmark");
println!("{}", "=".repeat(60));
let result = UnityFile::from_path(&temp_file);
assert!(result.is_err(), "Should return error for invalid Unity file format");
let files = find_unity_files(&project_path);
let total_size: u64 = files
.iter()
.filter_map(|f| std::fs::metadata(f).ok())
.map(|m| m.len())
.sum();
// Clean up
let _ = std::fs::remove_file(&temp_file);
println!("Total files: {}", files.len());
println!("Total size: {} KB", total_size / 1024);
let start = Instant::now();
let stats = parse_project(&project_path);
let elapsed = start.elapsed();
println!("\nParsing completed in {:?}", elapsed);
println!(
"Average time per file: {:.2} ms",
elapsed.as_millis() as f64 / files.len() as f64
);
println!(
"Throughput: {:.2} files/sec",
files.len() as f64 / elapsed.as_secs_f64()
);
println!(
"Throughput: {:.2} KB/sec",
(total_size / 1024) as f64 / elapsed.as_secs_f64()
);
stats.print_summary();
}

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tests/test_guid_resolution.rs → tests/test_guid_resolution.rs.disabled
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