SEELE AI Gaming Platform

Please use Three.js to generate a **mobile-first game** with the theme "**Lineum: The Garden Path**". Please read the following detailed game design requirements first, and then generate the code accordingly: ### 1. Assets & Environment * **Visual Style**: A stylized, "Low-poly Nature" aesthetic. The scene should look like a floating island or a raised garden bed against a calming gradient sky (light blue to soft white). * **Grid System (The Tiles)**: * Use `THREE.InstancedMesh` for the grid tiles to ensure high performance (60 FPS) on mobile devices. * **State A (Unvisited)**: "Dry Soil" texture – matte brown, slightly rough geometry. * **State B (Visited)**: "Lush Grass" texture – vibrant green. When a tile is activated, it should trigger a transition animation: either a mechanical "flip" (rotating 180 degrees) or a "growth" effect (scaling up grass blades). * **The Cursor/Player**: A glowing particle orb or a small stylized water droplet that leads the line. It leaves a trail (using `THREE.Line` or a custom trail mesh) connecting the center of visited tiles to visualize the path clearly. * **Lighting**: Soft ambient light combined with a directional light (sun) casting soft shadows to give depth to the tiles. ### 2. Audio Requirements * **BGM**: A relaxing, Zen-inspired track (Lo-fi or acoustic guitar) that loops seamlessly. It should be non-intrusive to aid concentration. * **Sound Effects (SFX)**: * **Move/Flip**: A satisfying "pop" or "leaf rustle" sound (ASMR quality) each time a tile turns green. Pitch the sound up slightly for each subsequent move in a combo to create a sense of progression. * **Invalid Move**: A soft, low-frequency "thud" or muted pluck if the player tries to cross their own line or move diagonally. * **Level Complete**: A bright, harmonious chime or major chord arpeggio. * **UI Interactions**: crisp "clicks" for buttons (Reset, Hint). ### 3. Gameplay Loop * **Core Mechanic**: The game is a "One-Stroke" puzzle (Hamiltonian path variant). The player must fill every tile in the grid. * **Rules**: 1. **Start**: The player touches any "Dirt" tile to begin (or a pre-defined start tile for harder levels). 2. **Draw**: The player drags their finger to move to adjacent tiles (Up, Down, Left, Right). No diagonal movement. 3. **Constraint**: The line cannot cross itself. A tile cannot be visited twice. 4. **Win Condition**: All traversable tiles in the level are turned to "Grass". 5. **Lose/Stuck**: If the player reaches a dead end but "Dirt" tiles remain, they must hit "Reset" or "Undo". * **Level Elements**: * **Standard Tile**: Becomes grass upon entry. * **Obstacle (Rock)**: A static mesh that blocks the path. * **Hint System**: A button that momentarily highlights the first 3-5 correct moves of the solution. ### 4. Mobile Controls & Interaction * **Input Method**: **"Drag-to-Draw"** system. * Implement a Raycaster that tracks touch/mouse movement on the grid plane. * As the player drags across a boundary from the current tile to a valid neighbor, the move executes automatically. This feels smoother than tapping individual cells. * **Camera**: Use an **Orthographic Camera** angled at roughly 45 degrees (isometric view) to ensure the grid is readable and touch targets are consistent across the screen. * **Haptic Feedback**: Trigger a light vibration (using `window.navigator.vibrate(10)`) every time a tile is successfully flipped. This is crucial for tactile satisfaction on mobile. * **UI Layout**: * **Portrait Mode**: Game grid in the center. "Level Counter" at the top. Large, thumb-friendly buttons (Reset, Undo, Hint) at the bottom (minimum touch target 48x48px). * **Responsiveness**: The grid must scale to fit the width of the device with a safe margin. ### 5. Technical Constraints * Ensure the renderer handles `pixelRatio` correctly for sharp visuals on high-DPI mobile screens. * Handle `touchstart` and `touchmove` events with `event.preventDefault()` to stop the browser page from scrolling while playing. Do not ask for clarification. Do not request confirmation. Directly execute the generation task based on the given instructions.