Simplified Pac-Man Clone Prompt

Objective: Create a complete, single-file Pac-Man clone in Go using the Ebitengine (v2) library. The game must be contained entirely within main.go and use procedural graphics (no external assets).

Configuration:

• Tile Size: 24 pixels.
• Map: 28x31 tiles (Classic layout).
• Screen: 672x744 pixels.
• Speed: 3 pixels per frame (Crucial: 3 divides 24 evenly, ensuring clean grid alignment).

Critical Guardrails (Strict Adherence Required): To prevent movement bugs and visual misalignment, you must follow these rules:

1. Logical vs. Visual: Entity x, y coordinates MUST represent the top-left corner of the tile. Do NOT store center coordinates in the struct.
2. Rendering Offset: Only apply the "center offset" (e.g., + TileSize/2) inside the Draw method when rendering circles or shapes.
3. Grid Alignment: Initial positions must be exact multiples of TileSize.
4. Turning Logic: Only allow direction changes when the entity is exactly centered on a tile. Check this using math.Mod(x, TileSize) == 0 && math.Mod(y, TileSize) == 0.
5. Input Buffering: Store a nextDir. When the entity reaches a tile center, check if nextDir is valid (no wall). If so, update the actual direction.

Graphics (Vector Package):

• Use github.com/hajimehoshi/ebiten/v2/vector for all rendering.
• Pac-Man: Yellow circle with an animated mouth (opening/closing) using vector.Path.
• Ghosts: Colored bodies (Red, Pink, Cyan, Orange) with eyes that look in the direction of movement.
• Map: Blue walls and white dots.

Game Logic:

• Map Layout: Implement a 28x31 grid using a hardcoded string map (Walls, Dots, Ghost House, Empty Space).
• Tunnel: Implement wrap-around logic: if an entity leaves the screen horizontally, they reappear on the opposite side.
• Ghost AI: Ghosts move continuously. At every intersection (or wall hit), choose a random valid direction. Prefer not to reverse direction unless necessary.
• Collision:
  • Walls: Look ahead one tile. If blocked, stop.
  • Dots: If center of Pac-Man hits a dot tile, remove dot and add score.
  • Ghosts: If Pac-Man touches a ghost, Game Over.

Controls:

• Arrows: Move.
• P: Pause.
• Q: Quit.
• F: Toggle Fullscreen.
• Enter: Restart.