I suggest you make a new type of Joystick

I suggest you add a new kind of joystick. Players can only use it to move their characters in four directions: forward, backward, left, and right. When the finger touchpoint reaches a certain area of the icon, the character's movement direction changes accordingly. Players can currently use joystick to move their characters in all dicections on the plane. The direction can change at any time. Sometimes when it changes slightly during character movement, the route may not meet expectations. The character may crash into obstacles, its direction of movement may change more in this situation.