Agent Work Split - Tutorial Area Development

Agent 1 (Current) - Editor & Spawn System

Todo

• Spawn Point Input Handling (editor/input.rs)
  • Add click handler for EditorTool::Spawn
  • Spawn marker entity at click position with SpawnPoint component
  • Use colored sphere mesh for visualization:
    • 🟢 Green for NPC
    • 🔴 Red for Enemy
    • 🔵 Blue for TriggerZone
    • 🟡 Yellow for Waypoint
• Spawn Point Persistence (map.rs)
  • Add spawn_points: Vec<SavedSpawnPoint> to MapData
  • Create SavedSpawnPoint struct matching SpawnPoint fields + position
  • Update save/load to include spawn points
• Spawn Point Visualization
  • Add text label above spawn marker showing entity_id
  • Make markers selectable with Select tool
  • Delete functionality for spawn points

Agent 2 - NPC AI with big-brain

Setup

cd loh-game
cargo add big-brain

Todo

• Add big-brain to Cargo.toml

  big-brain = "0.21"  # Check latest version

• Create AI Module (src/systems/ai/behavior.rs)
  • Define TutorialGuideAI scorer/action components
  • Implement GreetPlayer action (triggers dialogue)
  • Implement Patrol action (move between waypoints)
  • Implement WaitIdle action
• NPC Behavior Trees

  // Example structure
  Thinker::build()
     .picker(FirstToScore { threshold: 0.5 })
     .when(PlayerNearby::new(5.0), GreetPlayer)
     .when(Always, Patrol)

• Tutorial NPC Entity (src/systems/world/npcs.rs)
  • Create spawn_tutorial_npc function
  • Attach Thinker component
  • Use entity_id from SpawnPoint to determine which NPC to spawn

Shared Data Contracts

SpawnPoint Component (Already Created)

// src/systems/editor/state.rs
pub struct SpawnPoint {
    pub spawn_type: SpawnPointType,  // Npc, Enemy, TriggerZone, Waypoint
    pub entity_id: String,           // e.g., "tutorial_guide"
    pub level: i32,                  // For enemies
}

Files Agent 1 Will Modify

• src/systems/editor/input.rs
• src/systems/map.rs
• src/systems/editor/ui.rs (minor)

Files Agent 2 Will Create/Modify

• src/systems/ai/behavior.rs (NEW)
• src/systems/ai/mod.rs
• src/systems/world/npcs.rs (NEW or existing)

Testing

1. Agent 1: Open editor (F1), use Spawn tool, place markers, save/load map
2. Agent 2: Run game, verify NPC spawns at spawn point, test patrol behavior
3. Both: Combine work, verify spawn points + AI integration