Image processing device, image processing method, game device, and craft simulator

In a drawing method for drawing a water surface established in a three-dimensional virtual space, a drawing method comprising the step of:

• performing perspective processing for images of physical objects below the water surface, and drawing the images of the physical objects below the water surface in front of the water surface image on the display screen.

An image processing device comprising:

• first means for creating image data for representing a water surface established in a three-dimensional virtual space;
• and
• second means for creating image data where the water submerged portions of physical objects at least partially submerged below this water surface are rendered in perspective from above the water surface.

In a game device wherein a craft equipped with means for allowing a player to ride in real space and input control information and with a rockably supported cage is combined with an image processing device for creating image data whereby a character portraying the aforementioned craft is moved over a field in three-dimensional virtual space in response to the aforementioned control information, a game device comprising:

• field shifting means for changing the height of given positions of the surface of the field over time;
• and
• cage rocking means for rocking the cage of the craft in response to the changes in field surface height produced by this field shifting means.

In an image processing device for processing image data for moving an object over a field in three-dimensional virtual space, an image processing device comprising:

• object moving means for moving the object over the field in an interactive manner;
• and
• interactive effect creation means for creating data for interactive effects which represent object interactivity on the field.

A game device for displaying images as seen from a prescribed viewpoint in a virtual space, comprising:

• drawing means for drawing motion tracks for moving objects which move through the virtual space;
• and
• erasing means for erasing the motion trails over time.

A game device for displaying moving objects which move through a virtual game space, comprising:

• drawing means for drawing motion tracks left in the virtual space by the moving objects;
• and
• area reducing means for gradually reducing the display area of the motion trails over time.