JP2003325974A - Game system and game program - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a game system and a game program, generating a game image having varied image expressions by changing a shape of a figure according to a tilt of a game device or the like. <P>SOLUTION: This game system displays the figure on a display means. The game system has a housing held by a player, a tilt sensor provided in the housing, and a figure display-processing means displaying the figure on the display means. The figure display-processing means displays the figure of the shape according to a tilt direction of the housing detected by the tilt sensor. <P>COPYRIGHT: (C)2004,JPO

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a game system and a game program using a tilt sensor, and more particularly to a game system and a game program for changing a game image according to the output of the tilt sensor.

[0002]

2. Description of the Related Art A game system using a tilt sensor is disclosed in Japanese Patent Laid-Open No. 2001-170358 (hereinafter referred to as "prior art"). In this conventional technique, when a portable game device or a game controller (hereinafter, "a portable game device or a game controller" is referred to as a "game device or the like") is tilted, a figure (object) such as a player character is tilted in the tilted direction. ) Moves (rolls) to generate a game image. By generating such a game image, it is possible to give the player a feeling as if the game space is tilted in association with the tilt of the game device or the like.

[0003]

However, the above-mentioned conventional technique only controls the movement of the figure according to the inclination of the game device or the like, and cannot change the shape of the figure. Further, in the above-mentioned conventional technique, no processing related to light expression in the game space is performed, which is not realistic. Further, in the above-described conventional technique, it is possible to give the player a sensation as if the game space is tilted according to the tilt of the game device or the like, but there has been a demand for a method of further strengthening the sensation.

Therefore, it is an object of the present invention to provide a game system and a game program which generate a game image rich in a change in image expression by changing the shape of a graphic according to the inclination of a game device or the like. And It is another object of the present invention to provide a game system and a game program using a tilt sensor, which are capable of performing processing related to light in the game space according to the output of the tilt sensor. . It is another object of the present invention to provide a game system and a game program that can strongly give the player a feeling as if the game space is tilted according to the tilt of the game device or the like.

[0005]

In order to achieve the above object, the present invention is configured as follows. That is,
The invention according to claim 1 is a means for displaying a graphic (a shadow 102 or a shadow 104 if the correspondence with the embodiment described later is shown. Similarly, the correspondence with the embodiment is shown in parentheses below). It is a game system (game system 14 or game system 30) displayed on (LCD 12 or television 80). This game system includes a housing (housing 11 or housing 91) held by a player and an inclination sensor (acceleration sensor 154 or acceleration sensor 9) provided in the housing.
3) and a graphic display processing means for displaying a graphic on the display means (control circuit 20 for executing step 8, step 9 and step 11, or step 102 to step 1).
CPU 401 performing step 06 and step 108. Hereinafter, only step numbers will be shown). Then, the graphic display processing means displays a graphic having a shape corresponding to the direction of the inclination of the housing detected by the inclination sensor (S83 and S85, or S105 and S1).
06). In the present invention, the graphic is an image having a certain shape generated as a game image, such as a player character, a non-player character, a terrain character (for example, a puddle or cloud), a shadow, a light (spotlight), and the like. Including all of. These player characters, puddle, shadows, spotlights, etc. are transformed and displayed according to the inclination of the housing.

The invention according to claim 2 is the game system according to claim 1, wherein the graphic display processing means displays a graphic having a shape elongated in a direction of inclination of the housing detected by the inclination sensor. (S83 or S104
~ S106). That is, for example, when the housing is tilted to the right, a graphic with a shape extending rightward is displayed as a game image, and when the housing is tilted upward, a graphic with a shape extending upward is displayed (left). The same applies to the directions, the downward directions, and the diagonal directions. Hereinafter, representative directions may be described as examples, but the examples do not limit the present invention).

According to a third aspect of the present invention, in the game system according to the second aspect, the graphic display processing means changes the degree of extension according to the magnitude of the inclination of the housing detected by the inclination sensor. (S84 or S1
04-S106). That is, for example, when the housing is greatly tilted to the right, a graphic whose shape is greatly expanded to the right is displayed, and when it is tilted to a small extent, a graphic that is slightly expanded to the right is displayed.

The invention according to claim 4 is the game system according to any one of claims 1 to 3, wherein an object (player object 101 and a non-player object (not shown) or player object 103) is provided.
And a control circuit 20 or S10 for executing object display processing means (S6, S7 and S11) for displaying a non-player object (not shown) on the display means.
2, CPU 401 that executes S103 and S108)
Further, the graphic display processing means displays the shadow of the object (shadow 102 or shadow 104) on the display means. The graphic display processing means changes the shadow display (shadow direction or shadow length) according to the output value of the tilt sensor (S83 or S84, or S104 to S10).
6). That is, for example, when the housing is tilted to the right, a game image in which a shadow extends to the right is displayed as the game image. Further, when the housing is tilted largely to the right, a game image in which a shadow greatly extends to the right may be displayed.

According to a fifth aspect of the present invention, there is provided a game system (game system 30) for displaying a three-dimensional game space on a display means. This game system includes a housing (housing 11 or housing 91) held by a player and an inclination sensor (acceleration sensor 154 or acceleration sensor 9) provided in the housing.
3), the light source coordinate determining means (CPU 401 that executes S105) that determines the coordinates of the light source (light source coordinates 115) according to the output value of the tilt sensor, and the light source coordinates determined by the light source coordinate determining means. , Light-related image processing means for performing light-related image processing (CP for executing S106
U401). By changing the coordinates of the light source according to the output value of the tilt sensor, the light source coordinate determining means changes, for example, the display state of the shadow (direction and length of the shadow), light reflection (when hitting an object) according to the tilt of the housing. The light is reflected, meaning that part of the object appears to be shining) (display location and brightness), and the area where the light hits when spotlight-like light is emitted from the light source. Changes in the light, changes in the light that passes through the haze, clouds, etc. are expressed.

The invention according to claim 6 is the game system according to claim 5, wherein the object display processing means (S102, S10) for displaying an object on the display means.
3 and S401 for executing S108. Then, the light-related image processing means performs processing for displaying the shadow of the object on the display means (S106).

The invention according to claim 7 is the game system according to claim 5, wherein the object display processing means (S102, S10) for displaying the object on the display means.
3 and S401 for executing S108. Then, the light-related image processing means performs processing for displaying the light reflection of the object on the display means (S10).
6).

The invention according to claim 8 is the game system according to claim 5, wherein the light source basic coordinate determining means (S10) determines the basic coordinates of the light source (light source basic coordinates 114).
Further, a CPU 401) that executes 51 is further provided. The light source basic coordinate determining means may be, for example, a predetermined direction from the player object (Z in the local coordinate system of the player object).
Minus direction (axis 112 that forms 45 ° with the axis on the XZ plane)
Direction), and 45 ° with the XZ plane (Y axis plus direction)
The light source is determined at a position separated by a predetermined distance (D2) in the direction (direction of axis 113). It should be noted that the basic coordinates of the light source are fixed to a predetermined object (player object) (as described above, the minus direction (of the axis 112 of the axis 112 and the Z axis of the player object's local coordinate system) forms 45 ° on the XZ plane. Direction) and 45 ° with the XZ plane
The position may be determined by a predetermined distance (D2) in the direction (the direction of the axis 113) forming the (Y-axis plus direction), but it need not be fixed and may be determined depending on the situation. The position may be changed (for example, when representing the movement of the sun over time). And the tilt sensor
The inclination of the housing in a predetermined direction (X-axis direction or Z-axis direction in FIG. 3) is detected. Further, the light source coordinate determining means determines a predetermined axis (axis 108 or axis 110) according to the tilt direction detected by the tilt sensor, and the light source basic coordinate determining means determines the light source centered on the predetermined axis. The basic coordinates (light source basic coordinates 114) are rotationally moved in the direction opposite to the tilt direction, and the coordinates after the rotational movement (light source coordinates 115) are the coordinates of the light source (S1053 and S).
1055).

The invention according to claim 9 is the game system according to claim 8, wherein the housing is tilted in the left-right direction (X-axis direction in FIG. 3) (in other words, with the Z-axis in FIG. 3 as the center). This is characterized in the processing when detecting the inclination when rotating. In the present invention, the left-right direction is the direction in which the player holds the housing in the left-right direction, and will be described later with reference to FIG.
Corresponds to the X axis direction. When the tilt sensor detects such a tilt, the light source coordinate determination means is centered on the "axis (axis 110) obtained by projecting the Z axis (axis 120) of the viewpoint coordinate system on the XY plane of the world coordinate system" as a center. The basic coordinates of the light source are rotated in the direction opposite to the direction of the tilt, and the coordinates after the rotation (light source coordinates 115) are set as the coordinates of the light source (S1).
053).

The tenth aspect of the present invention is the game system according to the eighth aspect, wherein the housing is tilted in the front-rear direction (Z-axis direction in FIG. 3) (in other words, with the X-axis in FIG. 3 as the center). This is characterized in the processing when detecting the inclination when rotating. In the present invention, the front-rear direction is a direction that becomes the front-rear direction (that is, the depth direction) when the player holds the housing, and corresponds to the Z-axis direction in FIG. 3 described later. When the tilt sensor detects a tilt in such a direction, the light source coordinate determining means has a base of the light source in a direction opposite to the tilt centered on an axis (axis 108) that satisfies all of the following three conditions. The coordinates are rotated and moved, and the coordinates after the rotation (light source coordinates 115) are set as the coordinates of the light source (S105).
5). (1) The Z axis of the viewpoint coordinate system is orthogonal to the axis projected on the XZ plane of the world coordinate system (2) It exists on the XZ plane of the world coordinate system (3) It passes through the gazing point

An eleventh aspect of the present invention is the game system according to any of the eighth to tenth aspects, wherein the light source coordinate determining means has an angle of inclination (horizontal plane) detected by an inclination sensor about the predetermined axis. By rotating the basic coordinates of the light source (light source basic coordinates 114) in the opposite direction by the same angle as the tilt angle from (or tilt angle from the basic position),
The coordinate after rotation (light source coordinate 115) is set as the coordinate of the light source (S1053 or S1055).

According to a twelfth aspect of the present invention, there is provided the game system according to the eighth aspect, wherein the viewpoint coordinates (viewpoint coordinates 10
6) the viewpoint coordinate determination means (CPU 401 that executes S104) and the basic coordinates of the viewpoint (viewpoint basic coordinates 10).
5) The viewpoint basic coordinate determining unit (CPU 401 that executes S1041) is further provided. Further, the viewpoint coordinate determining means determines a predetermined axis according to the tilt direction detected by the tilt sensor, and the basic coordinates of the viewpoint (viewpoint coordinates 105 determined by the viewpoint basic coordinate determining means with the predetermined axis as a center. ) Is rotationally moved in the direction opposite to the tilt direction, and the coordinates after the rotational movement (viewpoint coordinates 106) are the coordinates of the viewpoint (S1043 and S1045).

According to a thirteenth aspect of the present invention, in the game system according to the twelfth aspect, the viewpoint basic coordinate determining means fixes the basic coordinates of the viewpoint to a predetermined object (player object). The direction and / or the distance is determined (S1041). For example, the negative direction of the Z axis of the player object's local coordinate system, and X
A direction (axis 11) that makes an angle of 45 ° with the Z plane (Y axis plus direction)
It is determined to be a position separated by a predetermined distance (D1) in the direction (1).

According to a fourteenth aspect of the present invention, in the game system according to the eighth or thirteenth aspect, the light source basic coordinate determining means fixes the basic coordinates of the light source with respect to a predetermined object (player object). Direction and / or distance is determined (S1051). For example, it is a minus direction (direction of axis 112) forming 45 ° on the XZ plane with the Z axis of the player object's local coordinate system, and a direction (direction of axis 113) forming 45 ° (Y axis plus direction) with the XZ plane. ) To a position separated by a predetermined distance (D2).

According to a fifteenth aspect of the present invention, in the game system according to the twelfth aspect, the basic coordinates of the light source determined by the light source basic coordinate determination means (114 in FIGS. 23 to 28) and the viewpoint standard. The basic coordinates (105 in FIGS. 17 to 22) of the viewpoint determined by the coordinate determining means are different in position.

According to a sixteenth aspect of the present invention, in the game system according to the fifth aspect, the game system further comprises basic position determining means (CPU 401 for executing S2) for determining a basic position of the housing. Further, the light source coordinate determining means is characterized by determining the coordinates of the light source (light source coordinates 115) according to the amount of inclination with respect to the basic position (S1042, S1044). When the player holds the housing in the basic position, the light source is determined to be the basic coordinates (light source basic coordinates 114). In addition, the player
When the housing is gripped in a state in which it is tilted in a predetermined direction from the basic position, the light source coordinate (light source coordinate 11
5) is decided. Here, the basic position is a position where the inclination of the housing is treated as 0 °, and is fixed in advance in the game system.
This includes both cases where the player arbitrarily decides.
In the former case, for example, the horizontal position is determined as the basic position, and in the latter case, the player can easily hold the housing according to the taste of the player, and in the case of the portable game device, the player can easily see the game screen. It is decided arbitrarily.

According to a seventeenth aspect of the present invention, a housing held by the player (housing 11 or
A game system (game system 14 or game system 3) that includes a housing 91) and an inclination sensor (acceleration sensor 154 or acceleration sensor 93) provided in the housing and displays a graphic on a display unit.
0) is a game program executed. This game program includes a graphic display processing step (S83 and S85, or S105) for displaying a graphic having a shape corresponding to the direction of the tilt of the housing detected by the tilt sensor.
And S106).

The invention according to claim 18 is the game program according to claim 17, wherein the figure display processing step displays a figure having a shape elongated in a direction of inclination of the housing detected by the inclination sensor. (S83 or S104-S106).

According to a nineteenth aspect of the present invention, in the game program according to the eighteenth aspect, the graphic display processing step changes the extent of extension according to the magnitude of the inclination of the housing detected by the inclination sensor. (S84 or S104-S106).

The invention according to claim 20 is the game program according to any one of claims 17 to 19, wherein an object (player object 101 and a non-player object not shown or player object 103 and a non-player object not shown) is provided.
Object display processing step (S6, S7 and S11, or S102, S10) for displaying on the display means.
3 and S108) are further included. Then, in the graphic display step, the shadow of the object (shadow 102 or shadow 1
04) is displayed on the display means. In the graphic display processing step, the shadow display (shadow direction or shadow length) is changed according to the output value of the tilt sensor (S83 or S84, or S104 to S106).

According to a twenty-first aspect of the invention, a housing held by the player (housing 11 or
A game program executed by a game system (game system 30) that includes a housing 91) and an inclination sensor (acceleration sensor 154 or acceleration sensor 93) provided in the housing and displays a three-dimensional game space on a display unit. Is. This game program is a light source coordinate determining step (S105) for determining the coordinates of the light source according to the output value of the tilt sensor, and a light for performing image processing related to light according to the coordinates of the light source determined in the light source coordinate determining step. Related image processing step (S106)
including.

The invention according to claim 22 is the game program according to claim 21, wherein an object display processing step (S10) for displaying an object on the display means.
2, S103 and S108). And
In the light-related image processing step, the shadow of the object is displayed on the display means (S106).

The invention described in Item 23 is the game program according to Item 21, wherein an object display processing step S10 for displaying an object on the display means.
2, CPU 401 that executes S103 and S108)
Further includes. Then, in the light-related image processing step, the light reflection of the object is displayed on the display means (S106).

The invention described in Item 24 is the game program according to Item 21, further comprising a light source basic coordinate determining step (S1051) for determining the basic coordinate of the light source (light source basic coordinate 114). The light source basic coordinate determining step is performed, for example, in a predetermined direction from the player object (Z axis and XZ of the player object's local coordinate system).
Minus direction forming 45 ° on the plane (direction of shaft 112)
That is, the light source is determined at a position separated by a predetermined distance (D2) in a direction (direction of the axis 113) forming 45 ° (Y-axis plus direction) with the XZ plane. It should be noted that the basic coordinates of the light source are fixed to a predetermined object (player object) (as described above, the minus direction (of the axis 112 of the axis 112 and the Z axis of the player object's local coordinate system) forms 45 ° on the XZ plane. Direction), and may be determined by a predetermined distance (D2) in a direction (direction of axis 113) forming 45 ° (Y-axis plus direction) with the XZ plane), but at a fixed position. The position does not need to be determined, and the position may be changed depending on the situation (for example, when representing the movement of the sun due to time change). The tilt sensor detects the tilt of the housing in a predetermined direction. In the light source coordinate determining step, a predetermined axis (axis 108 or axis 110) is determined according to the tilt direction detected by the tilt sensor, and the light source determined by the light source basic coordinate determining step is centered on the predetermined axis. Basic coordinates (light source basic coordinates 1
14) is rotationally moved in the direction opposite to the tilt direction, and the coordinates after the rotational movement (light source coordinates 115) are the coordinates of the light source (S).
1053 and S1055)

The invention described in Item 25 is the game program according to Item 24, wherein the housing is tilted in the left-right direction (the direction of the X-axis in FIG. 3) (in other words, the Z-axis in FIG. 3 is centered). Is characterized by the processing performed when the inclination (in the case of rotation) is detected. In the present invention, the left-right direction is the direction in which the player holds the housing in the left-right direction, and corresponds to the X-axis direction in FIG. 3 described later. In the light source coordinate determining step, when the tilt sensor detects such a tilt, the Z axis (axis 120) of the viewpoint coordinate system is projected on the XY plane of the world coordinate system according to the tilt detected by the tilt sensor. The basic coordinates of the light source are rotated around the axis (axis 110) in the direction opposite to the tilt direction, and the coordinates after the rotation (light source coordinates 115) are set as the coordinates of the light source (S1).
053).

The invention according to claim 26 is the game program according to claim 24, wherein the housing is tilted in the front-rear direction (Z-axis direction in FIG. 3) (in other words, X in FIG. 3).
This is a feature of the processing when detecting the inclination when rotating about an axis). In the present invention, the front-rear direction is a direction that becomes the front-rear direction (that is, the depth direction) when the player holds the housing, and corresponds to the Z-axis direction in FIG. 3 described later. In the light source coordinate determining step, when the tilt sensor detects a tilt in such a direction, the basic of the light source is set in a direction opposite to the direction of the tilt, with an axis (axis 108) satisfying all the following three conditions as the center. The coordinates are rotated and moved, and the coordinates after the rotation (light source coordinates 115) are set as the coordinates of the light source (S1).
055). (1) The Z axis of the viewpoint coordinate system is orthogonal to the axis projected on the XZ plane of the world coordinate system (2) It exists on the XZ plane of the world coordinate system (3) It passes through the gazing point

The 27th aspect of the present invention is the game program according to the 24th to 26th aspects, wherein in the light source coordinate determining step, the inclination angle detected by the inclination sensor is centered on the predetermined axis. The basic coordinates of the light source are rotationally moved in the opposite direction by the same angle as (S1053 or S1055).

The invention described in Item 28 is the game program according to Item 24, and a viewpoint coordinate determining step (S104) for determining viewpoint coordinates (viewpoint coordinates 106).
And a viewpoint basic coordinate determining step (S1041) for determining the basic coordinates of the viewpoint (viewpoint coordinates 105). Then, in the viewpoint coordinate determining step, a predetermined axis is determined according to the tilt direction detected by the tilt sensor,
With respect to the predetermined axis, the basic coordinates of the viewpoint (viewpoint coordinates 105) determined in the viewpoint basic coordinates determination step are rotationally moved in the direction opposite to the tilt direction, and the coordinates after the rotational movement (viewpoint coordinates 106) are described above. The coordinates of the viewpoint are set (S104).
3 and S1045).

The invention described in Item 29 is the game program according to Item 28, and in the viewpoint basic coordinate determining step, the basic coordinates of the viewpoint are fixed with respect to a predetermined object (player object). The direction and / or the distance is determined (S1041). For example, it is determined to be a position which is the Z-axis negative direction of the local coordinate system of the player object and is separated by a predetermined distance (D1) in a direction (direction of the axis 111) forming 45 ° (Y-axis positive direction) with the XZ plane.

A thirtieth aspect of the present invention is the game program according to the twenty-fourth or twenty-ninth aspect, wherein in the light source basic coordinate determining step, the basic coordinates of the light source are set with respect to a predetermined object (player object). A fixed direction and / or distance is determined (S1051). For example, it is a minus direction (direction of axis 112) forming 45 ° on the XZ plane with the Z axis of the player object's local coordinate system, and a direction (direction of axis 113) forming 45 ° (Y axis plus direction) with the XZ plane. ) To a position separated by a predetermined distance (D2).

The thirty-first aspect of the invention is the game program according to the twenty-eighth aspect, wherein the light source basic coordinates (114 in FIGS. 23 to 28) determined by the light source basic coordinate determining step and the viewpoint basic are determined. The basic coordinates (105 in FIGS. 17 to 22) of the viewpoint determined by the coordinate determining means are different in position.

The thirty-second aspect of the present invention is the game program according to the twenty-first aspect, wherein the basic position determining step (S) for determining the basic position of the housing.
2) is further included. Then, the light source coordinate determination step is
It is characterized in that the coordinates of the light source are determined according to the amount of inclination with respect to the basic position (S1042, S104).
4). When the player holds the housing in the basic position, the light source has the basic coordinates (114 in FIGS. 23 to 28).
Is decided. Also, when the player holds the housing in a state in which it is tilted in a predetermined direction from the basic position,
The light source coordinates (115 in FIGS. 23 to 28) are determined as coordinates obtained by rotating and moving the basic coordinates in the direction opposite to the direction of the inclination. Here, the basic position is a position where the inclination of the housing is treated as 0 °, and includes both a basic position fixedly determined in advance by the game system and a basic position arbitrarily determined by the player. . In the former case, for example, the horizontal position is determined as the basic position, and in the latter case, the player can easily hold the housing according to the taste of the player, and in the case of the portable game device, the player can easily see the game screen. It is decided arbitrarily.

The thirty-second aspect of the invention is the game program according to the twenty-fourth aspect, wherein in the light source basic coordinate determining step, a predetermined direction from a predetermined object (player object) (a local coordinate system for the player object). Is a negative direction that forms 45 ° with the Z axis of, and is separated by a predetermined distance (D2) in the diagonally upward 45 ° direction) as the basic coordinates of the light source (S105).
1).

A thirty-third aspect of the present invention is the game system according to any one of the first to sixteenth aspects, characterized in that the display means (LCD12) is provided in the housing (11).

[0039]

According to the invention described in claim 1 or 17, by changing the shape of the graphic according to the inclination of the game device or the like, it is possible to generate a game image with a variety of image representations. . Further, since the shape changes according to the inclination of the game device or the like, it is possible to give the player a new operation feeling as compared with the case where the shape is changed by operating the operation switch or the like. Further, since the operation of tilting is associated with the game image (shape of the figure), it is possible to provide the game image that matches the player's feeling.

According to the invention as set forth in claim 2 or 18, since a graphic having a shape elongated in the direction of inclination of the game device or the like is displayed, by tilting the game device or the like, the shape displayed as the game image is displayed. It is possible to give the player a feeling of stretching. In addition, it is possible to give the player a sensation as if the game space is tilted according to the tilt of the game device or the like, and the state of gravity applied to an object or the like existing in the game space is changed and the shape is stretched. it can.

According to the invention of claim 3 or 19, when the shape displayed as the game image is stretched,
By changing the degree of extension depending on the size of the inclination of the game device or the like, it is possible to provide the player with a feeling similar to that of the invention according to claim 2 or 18.

According to the invention described in claim 4 or 20, by changing the display of the shadow in accordance with the inclination of the game device or the like, the game space is inclined as if the inclination of the game device or the like. It is possible to give the player a sensation as if the shadow changes due to a change in the state of the light hitting an object or the like existing in the game space.

According to the invention described in claims 5, 6, 7, 21, 22, and 23, by changing the coordinates of the light source in accordance with the inclination of the game device or the like, the image effect of light in the game image is changed. It is possible to give the player a new sense of operation. Also, depending on the tilt of the game device, etc.
It is possible to provide a game image in which the state of light that hits an object or the like existing in the game space changes.

Claims 8, 9, 10, 11, 24, 25,
According to the inventions described in Nos. 26 and 27, the light source is rotated and moved in the opposite direction according to the inclination of the game device or the like. It is possible to make an image expression as if the same light is shining on a virtual game space existing inside the device or the like. Further, since the rotation axis for rotating the light source is determined according to the tilt direction of the game device or the like, the light source can be moved in an appropriate direction according to the tilt direction of the game device or the like. In particular, according to the invention described in claim 11 or 27, it is as if light is shining from a predetermined direction in the real world (as if the light source is fixed at a predetermined place in the real world).
Image representation is possible.

According to the twelfth or twenty-eighth aspect of the present invention, the tilt of the game space is expressed by moving the viewpoint in the opposite direction according to the tilt of the game device or the like. Accordingly, it is possible to perform an image representation as if there is a virtual game space that exists inside the game device or the like and also tilts in accordance with the tilt of the game device or the like.

According to the thirteenth or twenty-ninth aspect of the present invention, the basic coordinates of the viewpoint are fixedly determined with respect to the predetermined object, so that the inclination of the game space according to the inclination of the game device or the like can be expressed more accurately. Will be done. When the basic coordinates of the viewpoint are not fixed with respect to the predetermined object and move according to the situation (for example, when there is an obstacle between the viewpoint and the predetermined object, the viewpoint avoids the obstacle and views the predetermined object. To capture
It is difficult for the player to know whether the inclination of the game space is expressed or whether the viewpoint is simply moved in the case of moving to the left and right). In the case of the invention of claim 13 or 29, Since such a situation does not occur, the feeling that the tilt of the game device or the like and the tilt of the game space are interlocked becomes stronger.

According to the invention described in claim 14 or 30, by fixedly determining the basic coordinates of the light source with respect to the predetermined object, the rotational movement of the light source according to the inclination of the game device or the like can be more accurately performed. Will be expressed.

According to the fifteenth or thirty-first aspect of the present invention, since the shadow does not extend in the line-of-sight direction by making the positions of the viewpoint basic coordinates and the light source basic coordinates different, a highly interesting game image is generated. can do.

According to the sixteenth or thirty-second aspect of the present invention, by determining the basic position, the game can be played at a position where the player can easily operate or at a position intended by the game developer.

According to the thirty-third aspect of the present invention, since the display means is provided in the housing, the player holds the game device or the like (housing) and thereby the virtual game existing inside the game device or the like. It is possible to generate a feeling as if the user is operating by grasping the space.

[0051]

FIG. 1 is an external view showing a game system 14 which is a first embodiment of the present invention. The game system 14 includes a mobile game device 10 and a game cartridge 15. The mobile game device 10 includes a rectangular housing 11. A liquid crystal display (hereinafter referred to as “LC”) is provided on one main surface (front surface) of the housing 11.
12) is provided, and the operation switch 13 is attached with the LCD 12 sandwiched therebetween. Operation switch 1
Reference numeral 3 denotes a switch for a player to input an operation signal for operating the game,
Start switch 132 and select switch 133 are L
The operation instruction switches (A button, B button) 13a, 13b are arranged on the left side of the CD 12, and the operation switches 13R, 13L are arranged on the left and right of the upper side of the housing 11 as necessary. . The direction instruction switch 131 is mainly used for instructing the moving direction of the game character. Operation instruction switches 13a, 13b
Is mainly used for operation instructions of the game character (jump, kick, throw, etc.). Also, start switch 1
32 is used to instruct a game start, and the select switch 133 is used to select a menu displayed on the screen.

Further, a cartridge insertion hole (not shown) for detachably mounting a game cartridge (hereinafter referred to as "cartridge") 15 is formed on the upper rear surface of the portable game device 10, and the vicinity of the cartridge insertion hole is formed. Is provided with a connector (see 27 in FIG. 2). The cartridge 15 is a semiconductor memory (ROM 152 shown in FIG.
RAM153, acceleration sensor 154) housing 15
Built in 1.

FIG. 2 is a block diagram of the game system 14. The mobile game device 10 includes a control circuit (for example, C
A PU chip) 20 is built in. The control circuit 20 has a C
A PU core 21 is included. The CPU core 21 has an LCD controller 23, a work RAM 24, and a video RAM 25 via a bus (address bus and data bus) 22.
And the interface circuit 26 is connected. The operation switch 13, the connector 27, and the sound circuit 28 are connected to the control circuit 20. A speaker 29 is connected to the sound circuit 28. The desired cartridge 15 is attached to the connector 27 prior to the start of the game.
Then, the player (user) can play the desired game software by exchanging the cartridge 15.

The CPU core 21 of the control circuit 20 reads the game program from the cartridge 15 connected to the connector 27, executes the game process based on the operation signal input by the operation switch 13 and the program, and in the middle of the process. Data is stored in the work RAM 24, and the image data is temporarily stored in the video RAM 25. The CPU core 21 adjusts the display data temporarily stored in the video RAM 25 to LC in accordance with the display timing.
It is given to the D controller 23. LCD controller 23
Displays the image data supplied from the CPU core 21 on the LCD.
The display control for displaying on 12 is performed. Also, CPU
The core 21 generates sound data of game music or sound effects according to the progress of the game based on the game program, and supplies the sound data to the sound circuit 28. The sound circuit 28 is DA
A speaker 2 including a conversion circuit and an amplification circuit, which converts audio data into an audio signal (analog signal) and appropriately amplifies the speaker 2
Voice output from 9.

On the other hand, the game cartridge 15 is a ROM
152, RAM153, and the acceleration sensor 154 are included.
A game program and various data used for the game program are fixedly stored in the ROM 152. The details will be described in detail with reference to FIG. RAM1
In 53, game data obtained by executing the game program is rewritable and stored in a nonvolatile manner.
The game data stored in the RAM 153 includes, for example, backup data (acquired items, monsters, lives, the number of maps advanced, etc.) showing the progress when the game is finished. The acceleration sensor 154 is a biaxial acceleration sensor, and is a sensor that outputs the magnitude of inclination in two directions by detecting gravity. The acceleration sensor 154 is arranged in the cartridge 15 so that the inclination of the cartridge 15 in the horizontal direction and the vertical direction on the paper surface in FIG. 1 can be detected. Since the cartridge 15 is attached to the mobile game device 10, the acceleration sensor 154 is installed in the mobile game device 10.
The horizontal and vertical tilts on the paper in FIG. 1 are detected. To describe with reference to FIG. 3, when the portable game device 10 is held horizontally, the X axis, Y axis, and Z axis of the portable game device 10 are defined as follows. That is,
The X-axis is a horizontal and horizontal axis, the Z-axis is a horizontal and depth axis, and the Z-axis is a vertical axis. The acceleration sensor 154 has a tilt in the X-axis direction (in other words, a tilt when rotated about the Z-axis) and a tilt in the Z-axis direction (in other words, about the X-axis) of the portable game device 10 in FIG. The tilt when the rotation is performed as) is detected. As shown in FIG. 3, the plus / minus directions of the tilts in the respective axis directions are defined as the tilts that are counterclockwise when the axes are viewed from the plus direction, and the tilts that are clockwise are defined as the minus direction. . In the following description, the X axis shown in FIG. 3 may be simply referred to as “X axis”, and the Z axis shown in FIG. 3 may be simply referred to as “Z axis”.

FIG. 4 is a diagram showing data stored in the ROM 152. The ROM 152 includes a game program storage area 152a that stores a game program and areas (152b to 152f) that store various data used for the game program. Image data (101 shown in FIG. 6) indicating the player object is stored in the player object image data storage area 152b. Non-player object image data storage area 1
Image data indicating a non-player object (not shown, but similar to the image data indicating the player object and indicating the appearance of the non-player object) is stored in each of the non-player objects 52c. It Image data indicating the shadow of the player object (102 shown in FIG. 6) is stored in the player object shadow image data storage area 152d.
Is memorized. In the non-player object shadow image data storage area 152e, image data showing the shadow of the non-player object (not shown, but similar to the image data showing the shadow of the player object, represents the appearance of the shadow of the non-player object). Image data)
It is stored for each non-player object. The other data storage area 152f stores various other data used in the game program (for example, terrain object data, voice data, etc.).

FIG. 5 is a diagram showing data stored in the work RAM 24. The work RAM 24 stores temporary data generated in the game processing. In the acceleration sensor output value storage area 241, the acceleration sensor 1
The X-axis direction output value (OutX) corresponding to the tilt amount (tilt angle) in the X-axis direction and the Z-axis direction output value (OutZ) corresponding to the tilt amount (tilt angle) in the Z-axis direction, which are output from 54, are stored. To be done. When the portable game device 10 tilts in the positive X-axis direction (see FIG. 3), the output value in the X-axis direction becomes positive and in the negative X-axis direction (see FIG. 3).
In addition, the output value in the X-axis direction becomes negative. Further, when the portable game device 10 tilts in the positive Z-axis direction (see FIG. 3), the Z-axis direction output value becomes positive, and when it tilts in the negative Z-axis direction (see FIG. 3), the Z-axis The direction output value becomes negative.

The player object position data storage area 242 stores position data (Px, Py) in the world coordinate system of the player object that moves when the player operates the operation switch or the like. In the non-player object position data storage area 243, position data in the world coordinate system of the non-player objects that are automatically moved by the game program are stored for each non-player object. In the basic position data storage area 244, the output value of the acceleration sensor 154 corresponding to the basic position (position at which the tilt of the mobile game device 10 is treated as 0 °) determined prior to the start of the game,
It is stored for each of the X-axis direction output value and the Z-axis direction output value. Other game variable data storage area 245
Is other game variable data (for example, life force data of the player object, possession item data, etc.)
Is memorized.

FIG. 6A is a diagram showing an example of an image represented by the image data of the player object stored in the player object image data storage area 152b of FIG. In the case of the present embodiment, it is a character that is a player object (a character that holds a sword and a shield and battles with a monster that is a non-player object) 101. FIG. 6B is a diagram showing an example of a shadow image represented by the shadow image data of the player object stored in the player object shadow image data storage area 152d of FIG. By synthesizing the image of the player object and the shadow image of the player object, the player object (with a shadow) as shown in FIG. 6C is displayed on the LCD 12. Note that FIG. 6C corresponds to an image displayed when the mobile game device is in the basic position.

FIG. 7 and FIG. 8 are views for explaining the outline of the image display processing which is a feature of the present invention. FIG. 7 shows L when the portable game device 10 is tilted in the plus direction of the X-axis (in other words, when it is rotated about the Z-axis).
Player object displayed on CD12 (with shadow)
FIG. 6 is a diagram showing how an image is generated.

FIG. 7A is a diagram for explaining a case where the amount of tilt of the portable game device 10 is small (when the X-axis direction output value (OutX) of the acceleration sensor output value is small). (A1) shows the shadow image of the player object stored in the player object shadow image data storage area 152d of FIG. 4 (hereinafter, the player object stored in the player object shadow image data storage area 152d of FIG. 4). Shadow image is called "basic shadow image"). First, the basic shadow image (a1) is displayed on the portable game device 10
A process of rotating or reversing is performed according to the direction of the inclination. Specifically, in the case of FIG. 7A, the process of rotating the image (rotating clockwise by 90 °) is performed in response to the portable game device 10 tilting in the plus direction of the X-axis direction. (The image after the rotation processing is (a2)).
Further, (a2) a process of expanding or contracting the image (a process of expanding or contracting the image in a predetermined direction) is performed according to the magnitude of the inclination of the mobile game device 10. In the case of FIG. 7A, since the amount of tilt of the mobile game device 10 is relatively small, the image shrinking process is performed (based on the fact that the mobile game device 10 is tilted in the plus direction of the X axis direction). And, the direction of contraction is left and right). The image after such expansion / contraction processing is (a3). The shadow image data (a3) thus generated is combined with the player object image data, and the player object (with a shadow) as shown in (a4) is displayed on the LCD 12. It should be noted that in the combining process, shadow image data is arranged and combined to the right centering around the foot of the player object image based on the fact that the portable game device 10 is tilted in the plus direction of the X axis direction.

The image in FIG. 7 (a4) is an image when the portable game device is in the basic position ((c) in FIG. 6).
Compared with, the direction in which the shadow extends rotates 90 ° clockwise,
The length of the shadow grows shorter.

FIG. 7B is a diagram for explaining a case where the amount of tilt of the portable game device 10 is large (when the X-axis direction output value (OutX) of the acceleration sensor output value is large). The process from (b1) to (b2) of FIG.
This is similar to the processing from 1) to (a2). Figure 7 (b2)
In the subsequent expansion / contraction process, the image is stretched in response to the large amount of tilt of the mobile game device 10 (based on the fact that the mobile game device 10 is tilted in the plus direction of the X-axis direction, The direction of stretching is left and right). Shadow image data (b3) generated in this way
Is combined with the player object image data, and (b
4) Player object (shaded) like LCD
12 is displayed. It should be noted that in the combining process, shadow image data is arranged and combined to the right centering around the foot of the player object image based on the fact that the portable game device 10 is tilted in the plus direction of the X axis direction.

In the image (b4), the length of shadow extension is longer than that of the image when the amount of tilt is small ((a4) in FIG. 7).

FIG. 8 shows a player object (shaded) image displayed on the LCD 12 when the portable game device 10 is tilted in the plus direction of the Z axis (in other words, when it is rotated about the X axis). It is a figure which shows how it is produced | generated.

FIG. 8A is a diagram for explaining a case where the amount of tilt of the portable game device 10 is small (the output value of the acceleration sensor in the Z-axis direction (OutZ) is small). First, a process of rotating or inverting the basic shadow image according to the tilt direction of the mobile game device 10 is performed. Specifically, in the case of FIG. 8A, the process of inverting the image is performed in response to the handheld game device 10 tilting in the plus direction of the Z-axis (the image after the inversion process is (A2)). Further, (a2) a process of expanding or contracting the image (a process of expanding or contracting the image in a predetermined direction) is performed according to the magnitude of the inclination of the mobile game device 10. In the case of FIG. 8A, since the amount of tilt of the mobile game device 10 is relatively small, the process of shrinking the image is performed (based on the fact that the mobile game device 10 is tilted in the Z-axis direction, the image is shrunk). The direction is up and down). The image after such expansion / contraction processing is (a3). The shadow image data (a3) thus generated is combined with the player object image data, and the player object (with a shadow) as shown in (a4) is displayed on the LCD 12. It should be noted that, in the combining process, shadow image data is arranged below the player object image around the foot of the player object image based on the fact that the mobile game device 10 is tilted in the plus direction of the Z-axis direction.

The image in FIG. 8 (a4) is the image when the portable game device is in the basic position ((c) in FIG. 6).
Compared to, the direction in which the shadow grows is opposite, and the length of the shadow grows shorter.

FIG. 8B is a diagram for explaining a case where the amount of tilt of the portable game device 10 is large (when the output value of the acceleration sensor in the Z-axis direction (OutZ) is large). The processing from (b1) to (b2) in FIG.
This is similar to the processing from 1) to (a2). Figure 8 (b2)
In the subsequent expansion / contraction process, the image is stretched in response to the large amount of tilt of the mobile game device 10 (based on the fact that the mobile game device 10 is tilted in the positive Z-axis direction, The direction of extension is the vertical direction). Shadow image data (b3) generated in this way
Is combined with the player object image data, and (b
4) Player object (shaded) like LCD
12 is displayed. It should be noted that, in the combining process, shadow image data is arranged below the player object image around the foot of the player object image based on the fact that the mobile game device 10 is tilted in the plus direction of the Z-axis direction.

The image in FIG. 8 (b4) has a longer shadow extension than the image in which the amount of tilt is small ((a4) in FIG. 8).

Although not shown, the portable game device 10
Is tilted in the negative X-axis direction (when the X-axis direction output value (OutX) of the acceleration sensor output value is smaller than 0), the basic shadow image is rotated counterclockwise, and the tilt A process of expanding and contracting according to the size is performed. Then, in the synthesis of the player object image and the shadow image, the shadow image is synthesized to the left centering around the foot of the player object image.

When the portable game device 10 is tilted in the negative Z-axis direction (when the Z-axis direction output value (OutZ) of the acceleration sensor output value is smaller than 0), the rotation reversal process is not performed and the basic Only the process of extending the shadow image in the vertical direction is performed. Further, in the synthesis of the player object image and the shadow image, the shadow image is synthesized above the foot of the player object image.

Further, FIG. 9 shows a case where the portable game device 10 is rotating in an oblique direction. In this case, both the X-axis direction output value (OutX) and the Z-axis direction output value (OutZ) of the acceleration sensor output value are non-zero values. As described above, when the tilt is in the direction of an axis different from the X axis and the Z axis, the rotation processing of the basic shadow image is performed according to the tilt direction. The direction of the inclination is determined by the relationship between the X-axis direction output value and the Z-axis direction output value of the acceleration sensor output (for example, if the X-axis direction output value and the Z-axis direction output value are the same value. For example, the direction of the inclination at that time is a direction forming 45 ° with respect to the X axis and the Z axis).

As shown in FIG. 9, when the portable game device 10 is tilted in an oblique direction, the basic shadow image is rotated so that the shadow extends in the tilt direction. For example, when the image is tilted in the direction of the A axis shown in FIG. 9, the image is rotated in the direction of the A axis. In addition, expansion / contraction processing is performed according to the amount of tilt of the mobile game device 10, and a shadow image is arranged and combined with the foot of the player object image as the center in the tilt direction.

Although the process of generating an image of a player object (with a shadow) has been described above, the process of generating an image of a non-player object (with a shadow) is also performed.

Although the case where the figure that changes according to the tilt is a shadow image has been described above, the figure that changes according to the tilt is not limited to this, and a liquid (or gas) character may be used. The image data to be processed is only changed when the image is deformed according to the inclination (is displayed in the direction of the inclination) or the spotlight is deformed according to the inclination. Can be done at.

FIGS. 10 to 12 show R of the cartridge 15.
FIG. 9 is a diagram showing a flowchart of a program included in a game program stored in OM 152 and executed by control circuit 20.

FIG. 10 is a diagram showing the main flow.
First, in S1, initialization processing of various game variables is performed. Next, in S2, basic position determination processing is performed. Specifically, after the player holds the portable game device 10 at a desired position, he / she operates the enter button (for example, the operation switch 13a). The output value (X-axis direction output value and Z-axis direction output value) of the acceleration sensor 154 when the operation switch 13a is operated is the basic position data storage area 24 of FIG. 5 described above.
4 is stored. After S2, game processing is performed in S3. The game process will be described in detail with reference to FIG.

FIG. 11 is a flow chart showing details of the game process in S3 of FIG. First, in S4, input detection processing of the operation switch 13 is performed.
The operation switch 13 is operated by the player in order to instruct the player object to move. After S4, the acceleration sensor input detection process is performed in S5. Specifically, the X-axis direction output value and the Z-axis direction output value output from the acceleration sensor 154 are stored in the acceleration sensor output value storage area 241 in FIG. 5 described above.

After S5, a player object placement process is performed in S6. Specifically, the process of moving the player object is performed based on the operation information of the operation switch detected in the operation switch input detection process (S4), the position of the player object in the game space after the movement is determined, It is stored in the player object position data storage area 242 shown in FIG.

After S6, in S7, non-player object placement processing is performed. Specifically, the non-player object moving process is performed based on the non-player object moving program included in the game program, the position of the non-player object in the game space after the movement is determined, and the non-player object moving process is performed. It is stored in the non-player object position data storage area 243.

After S7, shadow placement processing is performed in S8 and S9. In this processing, as described above with reference to FIGS. 7 to 9, the basic shadow image is subjected to the rotation inversion processing and the expansion / contraction processing according to the tilt of the mobile game device 10 and is combined with the player object image or the non-player object image. Processing is performed. Although S8 is a shadow placement process for the player object and S9 is a shadow placement process for the non-player object, the processing contents are the same for both, and details will be described later with reference to FIG.

After S9, other game processing is performed in S10. Specifically, a battle process between the player object and the non-player object is performed.

After S10, display processing is performed in S11. Specifically, the player object image and the non-player object image are written in the VRAM 25 based on the data in the player object position data storage area 242 and the non-player object position data storage area 243 shown in FIG. It is written in the VRAM 25. At this time, the images of the player object and the non-player object in which the shadow images are combined in S8 and S9 are written in the VRAM 25.

After S11, it is determined in S12 whether or not the game is over. For example, it is determined whether the vitality of the player object has become 0, whether the time has expired, and the like. When it is determined that the game is over, the game process ends. If it is determined that the game is not over, the process returns to S4 and S4 ~
The process of S12 is repeated.

FIG. 12 is a flow chart showing details of the shadow arrangement process in S8 and S9 of FIG. The processing in this flowchart is a flowchart corresponding to the processing described above with reference to FIGS. 7 to 9. First,
In S81, a process of subtracting the data of the basic position data storage area 244 from the data of the acceleration sensor output value storage area 241 shown in FIG. 5 is performed.
Specifically, the process of subtracting SX from OutX, and
A process of subtracting SZ from OutZ is performed. By this processing, the basic position is 0 °
The game processing will be performed.

After S81, in S82, a process for determining the shadow extension direction is performed according to the value calculated in S81 (that is, according to the tilt direction of the portable game device). Then, after S82, in S83, S8
Processing for rotating or inverting the basic shadow image is performed according to the direction in which the shadow is determined in 2.

Specifically, when the rotation amount θ of the basic shadow image is determined from the output values (X-axis direction output value: OutX, Z-axis direction output value: OutZ) of the acceleration sensor, for example,
It may be set to θ that satisfies the following expression (1). tan θ = OutX / OutZ ... (Formula 1)

After S83, in S84, a process for determining the length of shadow extension is performed according to the value calculated in S81 (that is, according to the inclination of the portable game device). Then, after S84, in S85, S8
Depending on the growing length of the shadow determined in 4, the image after the processing (rotation or inversion processing) in S83 is expanded or contracted in the shadow expanding direction determined in S82.

Specifically, when the expansion / contraction amount of the shadow image is determined from the output values (X-axis direction output value: OutX, Z-axis direction output value: OutZ) of the acceleration sensor, for example, the following expression (2) is satisfied. It may be m. m ² = (OutX ² + OutZ ² ) / M (Equation 2) (M is a constant)

After S85, in S86, S81-S
A process of arranging the shadow image processed in 85 around the player object or the non-player object according to the inclination of the mobile game device 10 and combining is performed, and the shadow arranging process is ended.

FIG. 13 is an external view of the game system 30 according to the second embodiment of the present invention. This game system includes a game device 40, a DVD-ROM 50, a memory card 60, and the game system 1 of the first embodiment described above.
It is composed of four. The memory card 60 is selectively used.

DVD-ROM 50 and memory card 6
0 is configured to be attachable to and detachable from the game device 40. The game system 14 and the game device 40 are connected by a communication cable 70a, and the communication cable 70b connected to the game device 40 is connected to the television 80. The game apparatus 40 has a plurality of connectors for connecting the game system 14 or a controller (not shown), and the game system 14 is connected to any of these connectors. The game system 14 and the game device 40
The communication between and may be performed wirelessly without using a communication cable.

The DVD-ROM 50 fixedly stores data necessary for playing a game such as a game program and image data. When the player plays the game, the DVD-ROM 50 is mounted on the game machine device 40. The memory card 60 is composed of a rewritable storage medium and is used to save the state in the middle of the game. In addition, instead of the DVD-ROM 50, another storage medium (memory cartridge, CD-ROM, etc.) may be used to store the game program and the like.
The game device 40 reads the game program recorded in the DVD-ROM 50 and executes the game process.

The game system 14 is used as a simple operation input device in this embodiment. The game device 10 that constitutes the game system 14 can execute game processing independently by mounting a cartridge.
While displaying the game screen on the LCD 12, the game device 10
The game processing may be advanced in conjunction with the above. However, in the present embodiment, description of such interlocking game processing is omitted, and the game system 14 is used only as an operation input device (that is, the game system 14 simply uses operation data and the like as the game device). Only to send to). As described above with reference to FIG. 1, the portable game device 10 that constitutes the game system 14.
Has various operation switches 13, and outputs an operation input to the game device 40 in response to a player's depression of the switch. Similarly, the output from the acceleration sensor 154 included in the cartridge 15 mounted on the portable game device 10 is also transmitted via the communication cable 70a to the game device 40.
Is output to. The $ TV 80 displays the video signal output from the game device 40 on the screen. Also, TV 80
Has a built-in speaker and outputs an audio signal output from the game device 40.

FIG. 14 shows the game system 3 shown in FIG.
It is a block diagram which shows the hardware constitutions of 0. FIG.
In the game device 40, the calculation unit (CPU 401,
Graphics processing unit (GPU) 40
2 and DSP 406) and a storage unit (main memory 40
5, color buffer 403, Z buffer 404, and sub memory 407), and various interfaces (I / I)
The F) section (409 to 412 and 414), the memory controller 408, and the DVD drive 413 are provided. The memory controller 408 interconnects the arithmetic unit, the storage unit, and the interface unit as shown in FIG. 14, and controls the data transfer between these respective constituent elements.

The DVD drive 413 is the main body 1 of the game machine.
The DVD-ROM 50 mounted on the drive is driven. DVD-
A game program and various game data are recorded in the ROM 50. The game program recorded in the DVD-ROM 50 is passed through the DVD disk I / F 414 and the memory controller 408 and then passed through the main memory 40.
Loaded to 5. The CPU 401 is the main memory 40
The game program loaded in 5 is executed. The mobile game device 10 outputs the operation data of the operation switch 13 and the output value of the acceleration sensor to the game device 40 via the communication cable 70a. The operation data and the output value of the acceleration sensor output from the mobile game device 10 are input to the CPU 401 via the controller I / F 409 and the memory controller 408. The CPU 401 executes a predetermined game process according to the operation data input from the mobile game device 10 and the output value of the acceleration sensor.

The graphics processing unit (GPU) 402, under the control of the CPU 401,
Mainly performs image data generation processing. The GPU 402 includes a geometry unit 402a and a rendering unit 402b, and is connected to a memory (color buffer 403 and Z buffer 404) dedicated to image processing.
Note that the image processing area may be secured in a part of the main memory 405 without providing these dedicated memory for image processing. The geometry unit 402a and the rendering unit 402b are circuits for processing three-dimensional computer graphics. The geometry unit 402a is a circuit that performs a process for determining the position of the object in the virtual three-dimensional space (the position in the game space and the three-dimensional coordinates), and the rendering unit 402b is calculated by the geometry unit 402a. This is a circuit that performs processing for generating a two-dimensional image to be displayed on the television 80 based on the three-dimensional coordinates. The color buffer 403 stores the two-dimensional image generated by the rendering unit 402a, and the Z buffer 404 stores information in the depth direction in three-dimensional computer graphics. GP
The U402 generates image data to be displayed on the television 80 by these configurations, and the memory controller 408 appropriately.
And output to the television 80 via the video I / F 410.

Digital signal processor (DSP) 4
06 mainly performs a sound data generation process under the control of the CPU 401. The sub memory 407 is the DSP 40.
6 is a working memory. The audio data generated by the DSP 406 is output to the speaker 80b of the television 80 via the memory controller 408 and the audio I / F 412. The audio signal output from the game device 40 may be output to a speaker different from the television 80.

FIG. 15 is a diagram showing data stored in the DVD-ROM 50. The DVD-ROM 50 has a program storage area 50a for storing a game program, a player object image data (including polygon data and texture data) storage area 50b, a non-player object image data storage area 50c, and other data (terrain object image). Area 50d storing data and various data used for game programs)
Is memorized. In the program storage area 50a, FIG.
~ A program corresponding to a flowchart described later with reference to Fig. 31 is stored. Image data (including polygon data and texture data) indicating a player object is stored in the player object image data storage area 50b. In the non-player object image data storage area 50c, image data (including polygon data and texture data) indicating a non-player object is stored for each non-player object. Other data storage area 15
Various other data (for example, terrain object data, voice data, etc.) used for the game program are stored in 2f.

FIG. 16 is a diagram showing data stored in the main memory 405. The main memory 405 stores temporary data generated in the game process. The output value from the acceleration sensor 154 transferred from the mobile game device 10 to the game device 40 is stored in the acceleration sensor output value storage area 405a. In the player object position data storage area 405b, position data (X, Y, Z) of the player object in the virtual game space in the world coordinate system is stored. The non-player object position data storage area 405c stores position data (X, Y, Z) of the non-player object in the world coordinate system. Viewpoint data storage area 40
5d includes viewpoint coordinates (C
x, Cy, Cz) is stored. Light source data storage area 4
05e is a light source coordinate (L
x, Ly, Lz) is stored. The basic position data storage area 405f stores basic position data similar to that of the first embodiment. The other game variable data storage area 405g stores other game variable data (for example, life force data of the player object, data of possessed items, etc.). Program storage area 40
Program data read from the DVD-ROM 50 is transferred to and stored in 5h.

17 to 22 are views for explaining the rotational movement of the viewpoint coordinates according to the inclination of the portable game device 10. FIG. 17 is a diagram showing a certain range of virtual game space centered on the player object 103. The gazing point 107 of the camera is determined at the foot of the player object (the position of the gazing point of the camera is not limited to this example). The viewpoint basic coordinate 105 is the gazing point 107.
Is the negative direction of the Z-axis in the local coordinate system (the coordinate system having the Z-axis in front of the player object, the Y-axis above, and the X-axis to the right) with respect to the X-plane and 45 ° (Y). Predetermined distance (D1) in the direction that forms the axis plus direction (direction of axis 111 in FIG. 18)
Determined to a position away from each other.

The axis 120 (shown by a dotted line) is the Z axis of the viewpoint coordinate system (the axis connecting the viewpoint and the gazing point). The axis 110 is an axis obtained by projecting the Z axis (axis 120) of the viewpoint coordinate system onto the XZ plane (horizontal plane) of the world coordinate system. The axis 108 is an axis on the XZ plane of the world coordinate system, and is an axis orthogonal to the axis 110 at the gazing point. Further, the shaft 109 is the shaft 108.
And an axis orthogonal to the axis 110.

FIG. 18 shows the case where the portable game apparatus 10 is held at the basic position (the state of FIG. 18A. In this embodiment, the horizontal state is the basic position).
6 is a diagram for explaining the position of viewpoint coordinates of FIG. In this case, the viewpoint coordinates 106 are determined to be the same position as the viewpoint basic coordinates 105 (FIG. 18B). An image (player object and ground) as shown in FIG. 18C is displayed on the television 80 from the viewpoint thus determined.

FIG. 19 is a diagram for explaining the rotational movement of the viewpoint coordinates when the portable game device 10 is tilted α1 ° from the basic position in the positive Z-axis direction (the state of FIG. 19A). . In this case, the viewpoint basic coordinates 105
In the direction opposite to the direction of inclination about the axis 108 as α
The coordinates rotated by 1 ° are determined as the viewpoint coordinates 106 (FIG. 19B). An image as shown in FIG. 19C is displayed on the television 80 from the viewpoint thus determined.

When the portable game device 10 is tilted in the plus direction of the Z-axis, the virtual coordinates of the virtual game space existing in the portable game device 10 are changed by rotating the viewpoint coordinates in the opposite direction. Similar to the device 10, the display is as if tilted in the positive Z-axis direction. In the example of FIG. 19, when the portable game device 10 is tilted from the horizontal state to the front, an image as if the virtual game space is tilted to the front and the player object and the ground are looked down from above is displayed. To be done. By tilting the game space itself, it is possible to display the game space in a tilted manner. In this case, however, it is necessary to convert the data in the game space itself into tilted data. Is very heavy. On the contrary,
In the present invention, the inclination of the game space can be expressed only by rotating the viewpoint coordinates.

FIG. 20 is a diagram for explaining the rotational movement of the viewpoint coordinates when the portable game device 10 is tilted α2 ° from the basic position in the negative Z-axis direction (state of FIG. 20A). . In this case, the viewpoint basic coordinates 105
In the direction opposite to the direction of inclination about the axis 108 as α
The coordinates rotated and moved by 2 ° are determined as the viewpoint coordinates 106 (FIG. 20B). An image as shown in FIG. 20C is displayed on the television 80 from the viewpoint determined in this way. By tilting the portable game device 10 from the horizontal state to the depth side, the virtual game space is tilted to the depth side, and an image as if the player object or the ground is viewed from below is displayed.

FIG. 21 is a diagram for explaining the rotational movement of the viewpoint coordinates when the portable game device 10 is tilted from the basic position in the plus direction of the X-axis by β1 ° (state of FIG. 21A). . In this case, the viewpoint basic coordinates 105
In the direction opposite to the direction of inclination about the axis 110,
The coordinates rotated by 1 ° are determined as the viewpoint coordinates 106 (FIG. 21B). An image as shown in FIG. 21C is displayed on the television 80 from the viewpoint determined in this way. By tilting the portable game device 10 from the horizontal state to the right, the virtual game space is tilted to the right, and an image as if the player object or the ground is viewed from the left is displayed.

FIG. 22 is a diagram for explaining the rotational movement of the viewpoint coordinates when the portable game device 10 is tilted by β2 ° from the basic position in the minus direction of the X-axis direction (state of FIG. 22A). . In this case, the viewpoint basic coordinates 105
In the direction opposite to the direction of inclination about the axis 110,
The coordinates rotated and moved by 2 ° are determined as the viewpoint coordinates 106 (FIG. 22B). An image as shown in FIG. 22C is displayed on the television 80 from the viewpoint thus determined. By tilting the mobile game device 10 to the left from the horizontal state, the virtual game space is tilted to the left, and an image as if the player object or the ground is viewed from the right is displayed.

23 to 28 are views for explaining the rotational movement of the light source coordinates in accordance with the inclination of the portable game device 10. FIG. 23 is a diagram showing a certain range of virtual game space centered on the player object 103. A player object 103 and a shadow 104 of the player object are shown. The shafts 108 to 110 are shown in FIG.
Is the same as in. The light source basic coordinate 114 is a minus direction that forms 45 ° on the XZ plane and the Z axis of the local coordinate system for the player object with respect to the gazing point 107, and forms 45 ° (Y axis plus direction) with the XZ plane. The position is determined to be separated by a predetermined distance (D2) in the direction (direction of the axis 113 in FIG. 24).

FIG. 24 is a diagram for explaining the position of the light source coordinates when the portable game device 10 is held at the basic position (the state shown in FIG. 24A). In this case, the light source coordinate 115 is determined to be the same position as the light source basic coordinate 114 (FIG. 24 (b)). By performing the shadow processing with the light source determined in this way, an image (player object and shadow) as shown in FIG. 24C is displayed on the television 80. At this time, the shadow of the player object extends obliquely to the upper right on the screen.

FIG. 25 is a diagram for explaining the rotational movement of the light source coordinates when the portable game device 10 is tilted α1 ° from the basic position in the positive Z-axis direction (state of FIG. 25A). . In this case, the light source basic coordinates 114
In the direction opposite to the direction of inclination about the axis 108 as α
The coordinates rotated and moved by 1 ° are determined for the light source 115 (FIG. 25B). An image as shown in FIG. 25C is displayed on the television 80 from the viewpoint thus determined.

By rotating and moving the light source coordinates in this way, when the portable game device 10 is tilted in the positive Z-axis direction, the virtual game space existing in the portable game device 10 is also tilted. As a result, the light from the light source whose incident direction changes depending on the inclination of the game space can be expressed. Specifically, in the image of FIG. 25 (c), the position of the light source moves in the direction of the axis 109, so that the shadow length becomes shorter than that of the image at the basic position (FIG. 24 (c)). Further, since the position of the light source moves in the direction of the axis 110, the direction in which the shadow extends extends to the right.

FIG. 26 is a diagram for explaining the rotational movement of the light source coordinates when the portable game device 10 is tilted α2 ° from the basic position in the negative Z-axis direction (the state shown in FIG. 26A). . In this case, the light source basic coordinates 114
In the direction opposite to the direction of inclination about the axis 108 as α
The coordinates rotated by 2 ° are determined as the light source coordinates 115 (FIG. 26B). An image as shown in FIG. 26C is displayed on the television 80 from the viewpoint determined in this way. Specifically, in the image of FIG. 26C, the position of the light source moves in the minus direction of the axis 109, so that the length of the shadow becomes longer than that of the image at the basic position (FIG. 24C). Further, since the position of the light source moves in the minus direction of the axis 110, the direction in which the shadow extends extends toward the upper side.

FIG. 27 is a diagram for explaining the position of the light source coordinates when the portable game device 10 is tilted β1 ° from the basic position in the plus direction of the X-axis direction (state of FIG. 27A). In this case, the light source basic coordinates 114 are
In the direction opposite to the direction of inclination about the axis 110, β1
The coordinates rotated and moved by ° are determined as the light source coordinates 115 (Fig. 27 (b)). An image as shown in FIG. 27C is displayed on the television 80 from the viewpoint determined in this way. Specifically, in the image of FIG. 27 (c),
By moving the position of the light source in the minus direction of the axis 109, the length of the shadow becomes longer than that in the image at the basic position (FIG. 24C), and the position of the light source moves in the minus direction of the axis 108. As a result, the direction in which the shadow extends is toward the right.

FIG. 28 is a diagram for explaining the rotational movement of the light source coordinates when the portable game device 10 is tilted from the basic position in the negative X-axis direction by β2 ° (the state of FIG. 28A). . In this case, the light source basic coordinates 114
In the direction opposite to the direction of inclination about the axis 110,
The coordinates rotated and moved by 2 ° are determined as the light source coordinates 115 (FIG. 28B). An image as shown in FIG. 28C is displayed on the television 80 from the viewpoint thus determined. Specifically, in the image of FIG. 28C, the length of the shadow becomes shorter than that of the image at the basic position (FIG. 24C) because the position of the light source moves in the axis 109 plus direction. Further, since the position of the light source moves in the plus direction of the axis 108, the direction in which the shadow extends extends toward the upper side.

29 to 31 are flowcharts of programs stored in the program storage area 50a of the DVD-ROM 50 and executed by the CPU 401. As shown in FIG. The main flow in this embodiment is the same as the main flow (FIG. 10) in the first embodiment described above, and therefore its explanation is omitted.

FIG. 29 is a diagram showing a flow of game processing. First, in S100, input detection processing of the operation switch 13 is performed. The operation switch 13 is operated by the player in order to instruct the player object to move. After S100, an acceleration sensor input detection process is performed in S101. Specifically, the X-axis direction output value and the Z-axis direction output value output from the acceleration sensor 154 and transmitted from the portable game device 10 to the game device 40 via the communication cable 70a are the values shown in FIG.
Are stored in the acceleration sensor output value storage area 405a.

After S101, player object placement processing is performed in S102. Specifically, the process of moving the player object is performed based on the operation information of the operation switch detected in the operation switch input detection process (S100), and the position of the player object in the game space after the movement is determined. , Figure 1 above
No. 6 player object position data storage area 405b
Memorized in.

After S102, a non-player object placement process is performed in S103. Specifically, based on the non-player object moving program included in the game program, the moving process of the non-player object is performed, the position of the non-player object in the game space after the movement is determined, and the above-described FIG. Non-player object position data storage area 4
It is stored in 05c.

After S103, a viewpoint coordinate determination process is performed in S104. This process is shown in FIG.
This will be described later with reference to 0. After S104, light source coordinate determination processing is performed in S105. This processing will be described later with reference to FIG.

After S105, in S106, S10
Based on the light source determined in step 5, processing relating to light expression is performed. Specifically, a process of generating a shadow cast by the player object or the like on the terrain or another object, a process of shining light on a certain object and reflecting the same is performed. For these processes, various methods have been established as an image processing method for three-dimensional graphics (for example, a shadow volume method and a shadow map method for the process of generating a shadow), and therefore the description thereof is omitted here.

After S106, other game processing is performed in S107. Specifically, a battle process between the player object and the non-player object is performed.

After S107, display processing is performed in S108. Specifically, the data in the player object position data storage area 405b and the non-player object position data storage area 405c in FIG. 16 described above, the viewpoint coordinates determined in S104, and S
The game image is written in the color buffer 403 based on the result processed in 106. This process is CPU
This is performed by the 401 and the GPU 402 working together.

FIG. 30 is a flow chart showing details of the viewpoint coordinate determining process in S104 of FIG. First, in S1041, processing for determining the viewpoint basic coordinates C0 is performed. That is, a position separated by a predetermined distance (D1) in the direction of the axis 111 with respect to the gazing point 107 is set as the viewpoint basic coordinate C0.

After S1041, in S1042, the X-axis direction basic position SX is subtracted from the X-axis direction output value OutX of the acceleration sensor to calculate the tilt angle of the portable game device 10 in the X-axis direction with respect to the basic position.

After S1042, in S1043, S
Based on the tilt angle in the X-axis direction calculated in 1042,
A process of rotating the viewpoint basic coordinate C0 about the axis 110 is performed (the coordinate after the rotation is defined as C1). Specifically, it is rotationally moved in the direction opposite to the tilt direction calculated in S1042 by the same angle as the tilt angle calculated in S1042.

After S1043, in S1044, the Z-axis direction basic position SZ is subtracted from the Z-axis direction output value OutZ of the acceleration sensor to calculate the tilt angle of the portable game device 10 in the Z-axis direction with respect to the basic position.

After S1044, in S1045, S
Based on the tilt angle in the Z-axis direction calculated in 1044,
A process of rotating C1 calculated in S1043 about the axis 108 is performed (the coordinate after the rotation is set as C2). Specifically, it is rotationally moved in the direction opposite to the tilt direction calculated in S1044 by the same angle as the tilt angle calculated in S1044.

After S1045, in S1046, S
A process of determining C2 calculated in 1045 as the viewpoint coordinates is performed. Specifically, the processing of storing the viewpoint coordinates in the viewpoint data storage area 405d of FIG. 16 described above is performed. S
After 1046, the viewpoint coordinate determination processing ends.

FIG. 31 is a flow chart showing details of the light source coordinate determining process in S105 of FIG. First, in S1051, a process for determining the light source basic coordinate L0 is performed. That is, the light source basic coordinate L0 is set at a position separated from the gazing point 107 by a predetermined distance (D2) in the direction of the axis 113.

After S1051, in S1052, the X-axis direction basic position SX is subtracted from the X-axis direction output value OutX of the acceleration sensor to calculate the tilt angle of the portable game device 10 in the X-axis direction with respect to the basic position. Note that the process of S1052 is the same as the process of S1042 in the viewpoint coordinate determination process described above, so the process may be shared.

After S1052, in S1053, S
Based on the tilt angle in the X-axis direction calculated in 1052,
A process of rotationally moving the light source basic coordinate L0 about the axis 110 is performed (the coordinate after rotational movement is L1). Specifically, it is rotationally moved in the direction opposite to the tilt direction calculated in S1052 by the same angle as the tilt angle calculated in S1052.

After S1053, in S1054, the Z-axis direction basic position SZ is subtracted from the Z-axis direction output value OutZ of the acceleration sensor to calculate the tilt angle of the portable game device 10 in the Z-axis direction with respect to the basic position. The process of S1054 is the same as the process of S1044 in the viewpoint coordinate determination process described above, and thus the process may be shared.

After S1054, in S1055, S
Based on the tilt angle in the Z-axis direction calculated in 1054,
A process of rotating L1 calculated in S1053 about the axis 108 is performed (the coordinate after the rotation is set to L2). Specifically, it is rotationally moved in the direction opposite to the tilt direction calculated in S1054 by the same angle as the tilt angle calculated in S1054.

After S1055, in S1056, S
Processing for determining L2 calculated in 1055 as the viewpoint coordinates is performed. Specifically, the processing of storing the light source coordinates in the light source data storage area 405e of FIG. 16 described above is performed. S
After 1046, the light source coordinate determination processing ends.

In the above second embodiment, the axis serving as the center of the rotational movement of the viewpoint and the light source (claim 8 or claim 2).
Various variations are conceivable as the method of determining the "predetermined axis" in the invention described in 4 below, as follows. (1) When the tilt sensor detects the tilt of the housing in the left-right direction, the Z axis of the local coordinate system of the player object is set as a predetermined axis, and the light source or the viewpoint is rotated around this axis. When the tilt sensor detects the tilt of the housing in the front-rear direction, the housing is rotated around the X axis of the local coordinate system of the player object. (2) In the above-described embodiment, the Z-axis (axis 12) of the viewpoint coordinate system is used.
0) projected onto the XZ plane of the world coordinate system (axis 11
0) is the predetermined axis, but instead of this, Z of the viewpoint coordinate system is used.
The axis itself is the predetermined axis. (3) In the above-described embodiment, the Z-axis (axis 12) of the viewpoint coordinate system is used.
0) projected onto the XZ plane of the world coordinate system (axis 11
0) is the predetermined axis, but instead of this, Z of the viewpoint coordinate system is used.
An axis obtained by projecting the axis on the XZ plane of the local coordinate system of the object (for example, the player object) is set as the predetermined axis.
In addition, the Z axis of the viewpoint coordinate system is a predetermined axis that is projected on the terrain object (the ground object on which the player object is located).

FIG. 32 is a diagram showing a third embodiment of the present invention. In the third embodiment, the operating device operated by the player is not the game system 14 but the controller 90, as compared with the second embodiment. The controller 90 includes a housing 91 and operation switches 92a ...
d. Further, the acceleration sensor 9 is provided inside the housing.
3 is included, and the player holds the controller 90 and tilts the controller 90, and thereby a value corresponding to the tilt is obtained.
Output to 0. The content of the processing of the third embodiment is the same as that of the second embodiment, and therefore the description is omitted.

[Brief description of drawings]

FIG. 1 is an external view showing a game system according to a first embodiment of the present invention.

FIG. 2 is a block diagram of the game system according to the first embodiment.

FIG. 3 is an X-axis, Y-axis of the portable game device 10 according to the first embodiment.
It is a figure which defines an axis and a Z-axis.

FIG. 4 is a diagram showing data stored in a ROM 152 of the first embodiment.

FIG. 5 is a diagram showing data stored in a work RAM 24 of the first embodiment.

FIG. 6 is a diagram showing player object image data, player object shadow image data, and an image of a player object (with a shadow) according to the first embodiment.

FIG. 7 is a diagram of a player object (shaded) image displayed on the LCD 12 when the portable game device 10 according to the first embodiment is tilted in the plus direction of the X axis direction.

FIG. 8 is a diagram of a player object (shaded) image displayed on the LCD 12 when the portable game device 10 according to the first embodiment is tilted in the positive Z-axis direction.

FIG. 9 is a diagram of a player object (shaded) image displayed on the LCD 12 when the portable game device 10 according to the first embodiment is tilted in an oblique direction.

FIG. 10 is a diagram showing a main flow of the first embodiment.

FIG. 11 is a flowchart showing details of the game processing of the first embodiment.

FIG. 12 is a flowchart showing details of shadow placement processing according to the first embodiment.

FIG. 13 is an external view of the game system 30 according to the second embodiment of the present invention.

FIG. 14 is a block diagram showing a hardware configuration of a game system 30 according to a second embodiment of the present invention.

FIG. 15 is a diagram showing data stored in a DVD-ROM 50 according to a second embodiment of the present invention.

FIG. 16 is a diagram showing data stored in a main memory 405 according to the second embodiment of this invention.

FIG. 17 is a diagram showing a certain range of virtual game space centered on the player object 103 according to the second embodiment of the present invention.

FIG. 18 is a diagram for explaining the position of viewpoint coordinates when the handheld game device 10 according to the second embodiment of the present invention is held at the basic position.

FIG. 19 is a diagram for explaining the rotational movement of the viewpoint coordinates when the portable game device 10 according to the second embodiment of the present invention is tilted α1 ° from the basic position in the plus direction of the Z-axis direction.

FIG. 20 is a diagram for explaining rotational movement of viewpoint coordinates when the portable game device 10 according to the second embodiment of the present invention is tilted α2 ° from the basic position in the negative Z-axis direction.

FIG. 21 is a diagram for explaining rotational movement of viewpoint coordinates when the handheld game device 10 according to the second embodiment of the present invention is tilted β1 ° from the basic position in the plus direction of the X-axis direction.

FIG. 22 is a diagram for explaining rotational movement of the viewpoint coordinates when the portable game device 10 according to the second embodiment of the present invention is tilted β2 ° from the basic position in the negative direction of the X-axis direction.

FIG. 23 is a diagram showing a predetermined range of virtual game space centered on a player object 103 according to the second embodiment of the present invention.

FIG. 24 is a diagram for explaining the position of light source coordinates when the portable game device 10 according to the second embodiment of the present invention is held at the basic position.

FIG. 25 is a diagram for explaining the rotational movement of the light source coordinates when the portable game device 10 according to the second embodiment of the present invention is tilted α1 ° from the basic position in the positive Z-axis direction.

FIG. 26 is a diagram for explaining rotational movement of light source coordinates when the portable game device 10 according to the second embodiment of the present invention is tilted α2 ° from the basic position in the negative Z-axis direction.

FIG. 27 is a diagram for explaining the position of the light source coordinates when the portable game device 10 according to the second embodiment of the present invention is tilted β1 ° from the basic position in the plus direction of the X-axis direction.

FIG. 28 is a diagram for explaining the rotational movement of the light source coordinates when the portable game device 10 according to the second embodiment of the present invention is tilted β2 ° from the basic position in the negative direction of the X-axis direction.

FIG. 29 is a diagram showing the flow of game processing according to the second embodiment of the present invention.

FIG. 30 is a flowchart showing details of viewpoint coordinate determination processing according to the second embodiment of the present invention.

FIG. 31 is a flowchart showing details of light source coordinate determination processing according to the second embodiment of the present invention.

FIG. 32 is a diagram showing a third embodiment of the present invention.

[Explanation of symbols]

10 ... Portable game device 14 ... Game system 15 ... Cartridge 154 ... Acceleration sensor 30 ... Game system 40 ... Game device 50 ... DVD-ROM 103 ... Player object 104 ... Shadow of player object 105 ... Basic coordinates of viewpoint 106 ... Viewpoint coordinates 114 ... Basic coordinates of light source 115 ... Light source coordinates

   ─────────────────────────────────────────────────── ─── Continued front page    (72) Inventor Takao Shimizu             11-1 Kamitoba Hokodatemachi, Minami-ku, Kyoto-shi, Kyoto Prefecture             Nintendo Co., Ltd. (72) Inventor Shinya Takahashi             11-1 Kamitoba Hokodatemachi, Minami-ku, Kyoto-shi, Kyoto Prefecture             Nintendo Co., Ltd. (72) Inventor Toshiaki Suzuki             11-1 Kamitoba Hokodatemachi, Minami-ku, Kyoto-shi, Kyoto Prefecture             Nintendo Co., Ltd. F-term (reference) 2C001 AA14 BA05 BA06 BC05 CA02                       CA09 CB01 CB05 CC03 CC08

Claims (33)

[Claims] 1. A game system for displaying a graphic on a display means, comprising: a housing held by a player, an inclination sensor provided on the housing, and a graphic display processing means for displaying the graphic on the display means. The game system, wherein the graphic display processing means displays a graphic having a shape corresponding to a direction of inclination of the housing detected by the inclination sensor. 2. The graphic display processing means displays a graphic having a shape extending in a direction of inclination of the housing detected by the inclination sensor.
The game system described in. 3. The game system according to claim 2, wherein the graphic display processing means changes a degree of extension in accordance with an amount of inclination of the housing detected by the inclination sensor. 4. An object display processing means for displaying an object on the display means is further provided, wherein the graphic display processing means displays a shadow of the object on the display means, and according to an output value of the tilt sensor. 2. The display of the shadow is changed by changing the shadow.
The game system according to any one of 1 to 3. 5. A game system for displaying a three-dimensional game space on a display means, a housing held by a player, a tilt sensor provided in the housing for detecting a tilt of the housing, and an output of the tilt sensor. A game system comprising: a light source coordinate determining unit that determines a coordinate of a light source according to a value; and a light-related image processing unit that performs image processing on light according to the coordinate of the light source determined by the light source coordinate determining unit. 6. The object display processing means for displaying an object on the display means is further provided, and the light-related image processing means performs processing for displaying a shadow of the object on the display means. Item 5. The game system according to Item 5. 7. The object display processing means for displaying an object on the display means is further provided, and the light-related image processing means performs processing for displaying the light reflection of the object on the display means. The game system according to claim 5. 8. A light source basic coordinate determining means for determining basic coordinates of the light source, wherein the light source coordinate determining means determines a predetermined axis according to a tilt direction detected by the tilt sensor, and the predetermined axis. Characterized in that the basic coordinates of the light source determined by the light source basic coordinate determining means are rotationally moved in the direction opposite to the tilt direction, and the coordinates after the rotational movement are the coordinates of the light source. The game system according to claim 5. 9. The light source coordinate determining means, when the tilt sensor detects a tilt in the left-right direction of the housing, an axis obtained by projecting the Z axis of the viewpoint coordinate system onto the XZ plane of the world coordinate system is the predetermined axis. 9. The game system according to claim 8, wherein: 10. The light source coordinate determining means, when the tilt sensor detects the tilt in the front-rear direction of the housing, is orthogonal to the axis projected from the Z axis of the viewpoint coordinate system onto the XZ plane of the world coordinate system, The game system according to claim 8, wherein an axis existing on the XZ plane of the world coordinate system and passing through the gazing point is determined as the predetermined axis. 11. The light source coordinate determining means rotationally moves the basic coordinates of the light source in the opposite direction about the predetermined axis by the same angle as the angle of inclination detected by the inclination sensor, and after the rotational movement, 11. The game system according to claim 8, wherein the coordinates are light source coordinates. 12. A viewpoint coordinate determining means for determining viewpoint coordinates, and a viewpoint basic coordinate determining means for determining basic coordinates of the viewpoint, the viewpoint coordinate determining means in the tilt direction detected by the tilt sensor. A predetermined axis is determined accordingly, and the basic coordinates of the viewpoint determined by the viewpoint basic coordinate determining means are rotationally moved in the direction opposite to the tilt direction with the predetermined axis as the center, and the coordinates after the rotational movement are the aforesaid coordinates. 9. The game system according to claim 8, wherein the coordinates are viewpoint coordinates. 13. The viewpoint basic coordinate determining means determines the basic coordinates of the viewpoint in a fixed direction and / or distance with respect to a predetermined object.
The game system according to claim 12. 14. The light source basic coordinate determining means determines the basic coordinates of the light source in a fixed direction and / or distance with respect to a predetermined object.
The game system according to claim 8 or 13. 15. The position of the basic coordinates of the light source determined by the light source basic coordinate determining means and the basic coordinates of the viewpoint determined by the viewpoint basic coordinate determining means have different positions. Game system. 16. A basic position determining means for determining a basic position of the housing is further provided, and the light source coordinate determining means determines the coordinates of the light source according to an inclination amount with respect to the basic position. The game system according to claim 5. 17. A game program executed by a game system, comprising: a housing held by a player; and a tilt sensor provided in the housing, wherein the game system is configured to display graphics on a display means, the game program being detected by the tilt sensor. A game program including an object display processing step of displaying a graphic having a shape corresponding to a direction of inclination of a housing. 18. The game program according to claim 17, wherein the graphic display processing step displays a graphic having a shape extending in a direction of inclination of the housing detected by the inclination sensor. 19. The game program according to claim 18, wherein in the graphic display processing step, a degree of extension is changed according to a degree of inclination of the housing detected by the inclination sensor. 20. The method further comprises an object display processing step of displaying an object on the display means, wherein the graphic display step displays the shadow of the object on the display means, and the shadow according to the output value of the tilt sensor. 20. The game program according to claim 17, wherein the display of is changed. 21. A game program executed by a game system, comprising: a housing held by a player; and a tilt sensor provided in the housing, the game program being displayed on a display means in a three-dimensional game space. A game program comprising: a light source coordinate determining step of determining a coordinate of a light source according to an output value; and a light-related image processing step of performing image processing regarding light according to the coordinate of the light source determined by the light source coordinate determining step. 22. An object display processing step of displaying an object on said display means, wherein said light-related image processing step performs processing of displaying a shadow of said object on said display means. Item 21. The game program according to Item 21. 23. An object display processing step of displaying an object on the display means, the light-related image processing step performing processing of displaying light reflection of the object on the display means. The game program according to claim 21. 24. A light source basic coordinate determining step of determining a basic coordinate of the light source, wherein the light source coordinate determining step determines a predetermined axis according to a tilt direction detected by the tilt sensor, and the predetermined axis. Centering on, the basic coordinates of the light source determined by the light source basic coordinate determining step are rotationally moved in a direction opposite to the direction of the inclination, and the coordinates after the rotational movement are the coordinates of the light source. The game program according to claim 21. 25. In the light source coordinate determining step, an axis obtained by projecting the Z axis of the viewpoint coordinate system onto the XZ plane of the world coordinate system when the tilt sensor detects the tilt of the housing in the left-right direction is used as the predetermined axis. The game program according to claim 24, characterized in that 26. The light source coordinate determining step orthogonally intersects the Z axis of the viewpoint coordinate system with an axis projected on the XZ plane of the world coordinate system when the tilt of the housing in the front-rear direction is detected, The game program according to claim 24, wherein an axis existing on the XZ plane and passing through the gazing point is determined as the predetermined axis. 27. The light source coordinate determining step rotationally moves the coordinates of the light source in the opposite direction by the same angle as the angle of inclination detected by the inclination sensor about the predetermined axis, and the coordinates after the rotational movement. 27. The game program according to claim 24, wherein is set as a light source coordinate. 28. A viewpoint coordinate determining step of determining viewpoint coordinates and a viewpoint basic coordinate determining step of determining basic coordinates of the viewpoint, wherein the viewpoint coordinate determining step is performed in the tilt direction detected by the tilt sensor. A predetermined axis is determined accordingly, and the basic coordinates of the viewpoint determined in the viewpoint basic coordinate determining step are rotationally moved in a direction opposite to the tilt direction with the predetermined axis as a center, and the coordinates after the rotational movement are set to the above-mentioned coordinates. 25. The game program according to claim 24, wherein the coordinates are viewpoints. 29. The game according to claim 28, wherein the viewpoint basic coordinate determining step determines the basic coordinates of the viewpoint in a fixed direction and / or distance with respect to a predetermined object. program. 30. The light source basic coordinate determining step according to claim 24 or 29, wherein the basic coordinates of the light source are determined as a fixed direction and / or distance with respect to a predetermined object. Game program. 31. The position of the basic coordinate of the light source determined by the light source basic coordinate determining step and the basic coordinate of the viewpoint determined by the viewpoint basic coordinate determining means have different positions. Game program. 32. The method further comprises a basic position determining step of determining a basic position of the housing, wherein the light source coordinate determining step determines the coordinates of the light source according to an inclination amount with respect to the basic position. The game program according to claim 21. 33. The game system according to claim 1, wherein the display means is provided on the housing.