Create a 3D maze “navigation demo” application: the maze walls should have a high-gloss, ceramic-like finish, and the walkable path should feature a dynamic ripple distortion effect, like flowing water guiding the direction of travel. Use a third-person camera that smoothly follows a character with automatic pathfinding, and add depth-of-field post-processing that always keeps the focus locked on that character. You may use a custom GLSL shader to generate the ripple effect and integrate it with the scene, pathfinding, and camera systems. Provide a runnable example or an implementation plan.