AI Systems

NAVIGATION

Navigation

Automatic NavMesh generation, A* pathfinding, nav agents, crowd simulation, and tactical formations for groups of NPCs.

NavMesh generation from scene geometry with bake-time or runtime updates
A* pathfinding with dynamic obstacle avoidance
Nav agents with configurable radius, speed, and acceleration
Crowd simulation with local avoidance (RVO2)
Formation movement: line, wedge, circle, and custom shapes

Key benefit: NPCs that navigate complex environments naturally, avoiding each other and dynamic obstacles in real time.

// Generate NavMesh from scene raku_nav_mesh_bake(scene, &nav_config); // Create a nav agent RakuNavAgent agent = raku_nav_agent_create(entity); raku_nav_agent_set_radius(agent, 0.5f); raku_nav_agent_set_speed(agent, 3.5f); // Pathfind to target raku_nav_agent_set_destination(agent, target_pos); // Crowd simulation with avoidance RakuCrowd crowd = raku_nav_crowd_create(64); raku_nav_crowd_add_agent(crowd, agent); // Formation movement raku_nav_formation_create(squad, RAKU_FORM_WEDGE); raku_nav_formation_move_to(squad, rally_point);

BEHAVIOR

Behavior Trees

Visual node graph for designing complex NPC behaviors. Composites, decorators, blackboard data sharing, and full serialization.

Visual node graph editor for behavior authoring
Composite nodes: sequence, selector, parallel, random
Decorator nodes: inverter, repeater, cooldown, probability
Blackboard for shared data across tree nodes
JSON serialization for runtime loading and hot-reloading

Key benefit: Design sophisticated enemy AI without writing state machine spaghetti. Behavior trees are modular, debuggable, and reusable.

// Create behavior tree RakuBT bt = raku_bt_create(); // Build tree structure RakuBTNode root = raku_bt_selector(bt); RakuBTNode combat = raku_bt_sequence(bt); raku_bt_add_child(combat, raku_bt_condition("enemy_visible")); raku_bt_add_child(combat, raku_bt_action("attack", attack_fn)); RakuBTNode patrol = raku_bt_action("patrol", patrol_fn); raku_bt_add_child(root, combat); raku_bt_add_child(root, patrol); // Blackboard data raku_bt_blackboard_set_float(bt, "aggro_range", 15.0f); raku_bt_blackboard_set_entity(bt, "target", player); // Serialize / deserialize raku_bt_save_json(bt, "guard_ai.json"); RakuBT loaded = raku_bt_load_json("guard_ai.json");

VOICE

Voice Commands

On-device speech recognition with intent parsing, wake words, and text-to-speech with lip sync for NPCs. No cloud, no latency.

Speech recognition with configurable vocabulary
Intent parsing: map spoken phrases to game actions
Wake word detection for hands-free activation
Text-to-speech with multiple voices and emotions
TTS-driven lip sync with viseme generation

Key benefit: Talk to your game. Say "open inventory" or "attack the dragon" and watch it happen. NPCs talk back with synchronized lip animation.

// Register voice commands raku_voice_register_command("open inventory", open_inv_cb); raku_voice_register_command("cast fireball", cast_fire_cb); // Intent parsing with parameters raku_voice_register_intent("attack {target}", attack_cb); // "attack the goblin" -> target = "goblin" // Set wake word raku_voice_set_wake_word("hey raku"); raku_voice_on_wake(on_wake_cb); // Text-to-speech with lip sync raku_tts_speak(npc_entity, "Welcome, traveler."); raku_tts_set_voice(npc_entity, RAKU_VOICE_DEEP_MALE); raku_tts_set_emotion(npc_entity, RAKU_EMO_FRIENDLY); // Lip sync auto-binds to character mesh raku_tts_enable_lipsync(npc_entity, true);

NPC

NPC Intelligence

On-device SLM-powered NPCs with dynamic dialogue, sentiment analysis, and procedural quest generation. Built on the RakuSLM inference engine.

Dynamic dialogue generation with context and memory
Sentiment analysis on player text and voice input
Procedural quest generation based on world state
NPC personality profiles with trait-based responses
Relationship tracking with reputation and affinity

Key benefit: NPCs that remember conversations, react to player tone, and generate unique quests. Every playthrough is different.

// Create NPC with personality RakuNPC npc = raku_npc_create(entity); raku_npc_set_personality(npc, "gruff but kind blacksmith"); raku_npc_set_knowledge(npc, "knows about the dragon attack"); // Dynamic dialogue const char* response = raku_npc_dialogue( npc, "Do you have any quests for me?" ); // Sentiment analysis on player input RakuSentiment s = raku_npc_analyze_sentiment(player_text); // s.valence, s.arousal, s.dominance // Generate quest from world state RakuQuest quest = raku_npc_generate_quest(npc, world_state); raku_quest_activate(quest); // Relationship tracking raku_npc_modify_affinity(npc, player, +10);

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Every AI system runs on-device via RakuSLM. No cloud calls, no latency, no privacy concerns. Works offline.

NavMesh Pathfinding

Behavior Trees

Voice Commands

Speech Recognition

NPC Dialogue

Sentiment Analysis

Quest Generation

Dynamic Difficulty

Player Profiling

Adaptive Audio

Text-to-Speech

Lip Sync

Navigation

Behavior Trees

Voice Commands

NPC Intelligence

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