A computer system comprising a memory storing data and program instructions, the data representing a game environment including a character and a plurality of cover segments; a player interface; and a processor configured to execute the program instructions stored in the memory. Execution of the program instructions causes the computer to implement a method that comprises determining a selected subset of the cover segments; determining a curved path that passes through control points associated with the selected subset of the cover segments; and rendering images for display via the player interface, the images showing movement of the character along the curved path while the character is in cover mode.