Information storage medium and game image generation device

A non-transitory computer-readable information storage medium storing a program that can be executed by a computer that generates a game image in which a moving object moves in a game space based on a touch operation and a touch position on a screen, the program causing the computer to function as:

• an update section that updates operation data based on the touch operation and the touch position when the touch operation is performed in a first direction in a first area set in the screen, the operation data indicating an operation direction and an operation amount of the moving object;
• and
• a calculation section that performs calculations for moving the moving object based on the operation data,
• the update section updating a movement parameter for changing a moving speed of the moving object based on the touch operation and the touch position when the touch operation is performed in a second direction that is different from the first direction in a state in which the touch operation is performed in the first direction.

A game image generation device comprising:

• a state determination section that determines whether a current state of a screen is in a first state in which a first area in the screen is not touched or in a second state in which the first area is touched, based on a touch operation and a touch position on the screen;
• an image generation section that generates a first image when the screen is in the first state and generates a second image when the screen is in the second state, the first image being an image in which an operation image in the first area is not changed, and the second image being an image in which the operation image in the first area is changed;
• an update section that updates operation data based on the touch operation and the touch position in the first area when the screen is in the second state, the operation data indicating an operation direction and an operation amount of the moving object;
• and
• a calculation section that performs calculations for moving the moving object based on the operation data,
• the image generation section generating an image in which a current touch position image indicating a current touch position is moved corresponding to a change in the touch position, and generating an image in which the current touch position image is returned to an initial position when the second state changes to the first state, as part of the operation image, based on the touch operation and the touch position;
• and
• the update section initializing the operation data when the second state changes to the first state.