In-world movement is typically controlled using the arrow keys or "WASD" keys on the keyboard. I suggest a new method where holding the left mouse button allows the avatar to follow the mouse across the landscape. As long as the button is pressed, the avatar would turn and move toward the mouse pointer.

Alternatively, single or double-clicking could indicate where you want the avatar to go, but this approach offers a smoother, more intuitive way to guide the avatar using only the mouse.