Input direction determination system, terminal server, network system, information storage medium, and input direction determination method

A non-transitory information storage medium storing a program that implements a process that determines an input direction based on an indication position, the program causing a computer to function as:

• an input direction determination section that determines the input direction based on a reference point and the indication position;
• and
• a reference point change section that determines whether or not to change the reference point based on an angle formed by a first direction that is determined by the reference point and an indication position at a first timing or a timing that precedes the first timing, and a second direction that is determined by the indication position at the first timing and an indication position at a second timing that follows the first timing, or an angle formed by connection lines that connect indication positions at different timings, and changes the reference point.

An input direction determination method that determines an input direction based on an indication position, the input direction determination method comprising:

• determining the input direction based on a reference point and the indication position;
• and
• determining whether or not to change the reference point based on an angle formed by a first direction that is determined by the reference point and an indication position at a first timing or a timing that precedes the first timing, and a second direction that is determined by the indication position at the first timing and an indication position at a second timing that follows the first timing, or an angle formed by connection lines that connect indication positions at different timings, and changing the reference point.