Information processing apparatus and warning presentation method

A method, comprising:

• performing information processing on the basis of data received from a device that detects a target object;
• generating an image to be displayed as a result of the information processing;
• determining that a user needs to be warned when the target object moves out of a play area set in an object space in reference to a detection field of the device, the determining including causing the generating to superpose a warning image on the image to be displayed;
• and
• transmitting data of the image generated by the image generating section to a display device,
• wherein the determining includes setting positions of boundary surfaces of the play area with respect to boundary surfaces of the field of the device within a predetermined range from the user.

A non-transitory, computer readable storage medium containing a computer program, which when executed by a computer system, causes the computer system to carry out actions, comprising:

• performing information processing on the basis of data received from a device that detects a target object;
• generating an image to be displayed as a result of the information processing;
• determining that a user needs to be warned when the target object moves out of a play area set in an object space in reference to a detection field of the device, the determining including causing the generating to superpose a warning image on the image to be displayed;
• and
• transmitting data of the image generated by the image generating section to a display device,
• wherein the determining includes setting positions of boundary surfaces of the play area with respect to boundary surfaces of the field of the device within a predetermined range from the user.