experiment-adventure-ai/implementation_roadmap.md

Cutscene System Implementation Roadmap

Overview

This document outlines a step-by-step roadmap for implementing the cutscene system in Godot 4.3, based on the architectural designs created.

Phase 1: Foundation

1.1 Base Action Class

• Create Action.gd base class
• Implement state management (PENDING, RUNNING, COMPLETED)
• Add core signals (started, completed, failed)
• Implement basic methods (start, update, is_completed, stop)

1.2 CutsceneManager Core

• Create CutsceneManager.gd
• Implement sequential action queue
• Add action addition methods
• Create basic state management (IDLE, RUNNING)

Phase 2: Core Action Types

2.1 WaitAction

• Simplest action to implement and test
• Validates the basic action system
• Tests completion signaling

2.2 MoveAction

• Implement character movement logic
• Add position calculation and frame-based updates
• Test with different speeds and distances

2.3 TurnAction

• Implement character rotation logic
• Handle both position and node targets
• Test smooth rotation animations

Phase 3: Advanced Features

3.1 Parallel Execution System

• Implement parallel action group management
• Add completion tracking for parallel actions
• Test with multiple simultaneous actions

3.2 DialogueAction

• Implement basic dialogue display
• Add duration-based completion
• Test with different text lengths

3.3 AnimationAction

• Implement animation playback
• Handle AnimationPlayer integration
• Test with looping and non-looping animations

Phase 4: Completion and Callback System

4.1 Signal Integration

• Connect action signals to CutsceneManager
• Implement action completion handling
• Add error handling and failure recovery

4.2 Callback System

• Implement action-level callbacks
• Add cutscene-level callbacks
• Test callback chaining

4.3 State Management

• Implement full state transitions
• Add pause/resume functionality
• Test state persistence

Phase 5: Testing and Examples

5.1 Basic Cutscene Example

• Create simple sequential cutscene
• Test all core action types
• Validate completion flow

5.2 Complex Cutscene Example

• Implement the requirement example:
  • Character1 moves to 234, 591
  • Character2 moves to 912, 235 (simultaneously)
  • Character2 turns to Character1
  • Character2 says dialogue
  • Character1 plays shocked animation
• Test parallel execution
• Validate timing and synchronization

5.3 Edge Case Testing

• Test empty action queues
• Test failed actions
• Test rapid state changes
• Test memory management

Phase 6: Extensibility Features

6.1 Custom Action Example

• Create a custom action type
• Demonstrate extension process
• Validate compatibility with core system

6.2 Plugin Architecture

• Implement basic plugin system
• Create example plugin
• Test plugin integration

6.3 Performance Optimization

• Implement object pooling
• Add performance monitoring
• Optimize update loops

Implementation Order

graph TD
    A[Phase 1: Foundation] --> B[Phase 2: Core Actions]
    B --> C[Phase 3: Advanced Features]
    C --> D[Phase 4: Completion System]
    D --> E[Phase 5: Testing]
    E --> F[Phase 6: Extensibility]
    
    A1[Action Base Class] --> A2[CutsceneManager Core]
    A --> A1
    A --> A2
    
    B1[WaitAction] --> B2[MoveAction]
    B2 --> B3[TurnAction]
    B --> B1
    B --> B2
    B --> B3
    
    C1[Parallel Execution] --> C2[DialogueAction]
    C2 --> C3[AnimationAction]
    C --> C1
    C --> C2
    C --> C3
    
    D1[Signal Integration] --> D2[Callback System]
    D2 --> D3[State Management]
    D --> D1
    D --> D2
    D --> D3
    
    E1[Basic Example] --> E2[Complex Example]
    E2 --> E3[Edge Case Testing]
    E --> E1
    E --> E2
    E --> E3
    
    F1[Custom Action] --> F2[Plugin Architecture]
    F2 --> F3[Performance Optimization]
    F --> F1
    F --> F2
    F --> F3

Testing Strategy

Unit Tests

• Each action type tested independently
• CutsceneManager state transitions
• Signal emission and connection
• Error handling paths

Integration Tests

• Sequential action execution
• Parallel action execution
• Mixed sequential/parallel sequences
• Callback chaining

Performance Tests

• Large action queues
• Multiple simultaneous cutscenes
• Memory allocation/garbage collection
• Frame rate impact

File Structure Implementation

res://
└── cutscene/
    ├── CutsceneManager.gd
    ├── Action.gd
    ├── actions/
    │   ├── MoveAction.gd
    │   ├── TurnAction.gd
    │   ├── DialogueAction.gd
    │   ├── AnimationAction.gd
    │   └── WaitAction.gd
    ├── examples/
    │   ├── basic_cutscene.tscn
    │   ├── complex_cutscene.tscn
    │   └── custom_action_example.gd
    └── tests/
        ├── test_action.gd
        ├── test_cutscene_manager.gd
        └── test_parallel_execution.gd

Success Criteria

Functional Requirements

• Sequential actions execute in order
• Parallel actions execute simultaneously
• All core action types function correctly
• Completion system works reliably
• Error handling is robust

Performance Requirements

• Frame rate remains stable during cutscenes
• Memory usage is optimized
• No significant garbage collection spikes

Extensibility Requirements

• New action types can be added easily
• System can be extended with plugins
• Custom callbacks work as expected

Timeline Estimate

Phase 1: Foundation - 2 days

Phase 2: Core Action Types - 3 days

Phase 3: Advanced Features - 2 days

Phase 4: Completion and Callback System - 2 days

Phase 5: Testing and Examples - 3 days

Phase 6: Extensibility Features - 2 days

Total Estimated Time: 14 days

This roadmap provides a structured approach to implementing the cutscene system, ensuring that each component is properly tested and integrated before moving on to the next phase.