Abstract: A method of forming a computer game that is arranged to move an object along a path in a virtual environment of the computer game, wherein the method comprises steps of: (a) performing a plurality of object movement simulations for an object, wherein each simulation comprises moving that object with a respective speed along a path with a respective curvature in the virtual environment to determine whether that object can successfully travel along that path at that speed; (b) using the simulations to determine a relationship between curvature and a corresponding speed with which the object can successfully travel along a path with that curvature; and (c) storing data indicating the relationship as a part of the computer game.

Abstract: A method of moving an object within a virtual environment, the method comprising: providing a reference line within the virtual environment; based on a position of the object relative to the reference line, determining a target position for the object within the virtual environment; and controlling the object so as to guide the object within the virtual environment towards the target position.