JP5095704B2 - GAME DEVICE AND GAME PROGRAM - Google Patents

Description

    The present invention relates to a game apparatus that displays a two-dimensional image by overlaying a plurality of layers, and in particular, detects a posture using a sensor capable of detecting the posture, such as a posture sensor, and according to the detected posture. The present invention relates to a game apparatus and a game program in which movement control of these layers is performed so that an image can be expressed from a user's viewpoint.

    Normally, in a game device that generates and displays a two-dimensional image by rendering an object arranged in the three-dimensional virtual space, changing the viewpoint of the user who plays the game in the three-dimensional virtual space renders the object This can be easily done by changing the position of the virtual camera via an input means such as a controller.

    However, in the case of a game device that generates a single two-dimensional game image by superimposing a plurality of layers, the images of each layer are fixed, so it is difficult to express the stereoscopic effect of the image, that is, the perspective. Accompany. Conventionally, as an apparatus for giving a stereoscopic effect to a two-dimensional image by relatively moving a plurality of layers, for example, a device disclosed in Patent Document 1 is known.

JP 2006-208767 A

    In the apparatus shown in Patent Document 1, when a two-dimensional image is expressed, the two-dimensional image is composed of a plurality of layers divided by distances such as a background, a middle scene, and a foreground, and these images are represented by a user's viewpoint, that is, A stereoscopic effect is generated by moving the virtual viewpoint relative to the perspective.

    However, in this case, the user's viewpoint with respect to the two-dimensional image displayed on the display is fixed, and is irrelevant to the operation of the user's input means. Therefore, for example, in order to confirm the image arranged in the background portion behind the person displayed in the middle background, the user operates the controller to look behind the person, that is, displayed on the display. Operations such as changing the viewpoint of the user in the two-dimensional image could not be performed. If this is possible with a game device that is configured to generate a single image by overlaying multiple layers, scenarios that are rich in various changes, such as solving puzzles in the game and searching for items. A game device and a game that not only can be developed, but also can be immersed in an immersive feeling that the user himself participates in the game or operates the game world by himself, and allows an unprecedented expression A program can be provided.

    The present invention provides a game apparatus and a game program that can express a two-dimensional image displayed on a display in a form in which the viewpoint is changed by a user operation using a posture sensor operable by the user. The purpose is to provide.

The first aspect of the present invention is generated by superimposing a plurality of scene layers (DVL, MVL, CVL) each made of a two-dimensional image drawn according to the distance from the virtual viewpoint (VP). A display (3) capable of displaying a display game image (DGI), a main body (2) provided with the display, and a posture sensor (7) capable of detecting an inclination with respect to a horizontal plane. In the game apparatus (1) capable of changing the display game image (DGI) displayed on the display according to the inclination (α, β, δ) with respect to the horizontal plane detected by the sensor (7),
Inclination calculation means (12) for determining that the inclination of the posture sensor with respect to the horizontal plane is equal to or greater than a predetermined value and outputting a predetermined signal,
Layer control means for controlling movement of the plurality of scene layers (DVL, MVL, CVL) while changing the relative positions of the scene layers (DVL, MVL, CVL) on the installation plane of the scene layer when a predetermined signal is input. (11, 15) and
Game image display means (10) for displaying the display game image generated from the moving scene layer on the display (3) in accordance with the movement of the scene layer by the layer control unit,
It is comprised from these.

According to a second aspect of the present invention, there is provided a main body holding posture calculation means for calculating a holding posture by a user of the main body based on an output from the posture sensor, and
When it is determined that the display is held horizontally with respect to the user, the display game image is displayed on the display as a horizontally long display game image, and the display is vertically long with respect to the user. A display image switching means (10) for controlling the display game image to be displayed on the display as a vertically long display game image when it is determined that the display game image is held.
The layer control means can move the relative positions of the plurality of scene layers in directions corresponding to the vertical and horizontal directions of the display game image,
When the horizontally long display game image is displayed on the display, the layer control means further determines a maximum movement amount of the plurality of scene layers in a direction corresponding to a left-right direction of the display game image, When the display game image is set larger than the maximum movement amount in the direction corresponding to the vertical direction of the display game image and the vertically long display game image is displayed on the display, the display game image of the plurality of scene layers is displayed. A maximum movement amount in a direction corresponding to the up and down direction is set to be larger than a maximum movement amount in a direction corresponding to the left and right direction of the display game image.
It is characterized by that.

According to a third aspect of the present invention, the scene layer includes at least three scene layers (DVL, MVL, CVL) drawn according to the distance from the virtual viewpoint,
The layer control means (11, 15) fixes one scene layer (DVL, MVL, or CVL) among the scene layers, and assigns the other scene layers to the fixed scene layer. Control is performed to move the relative position.

    According to a fourth aspect of the present invention, when the layer control unit moves a scene layer (for example, MVL, CVL) other than the fixed scene layer (for example, DVL), the scene layer other than the fixed scene layer is used. At the same time, and during the movement, the scene layers are moved without stopping at a predetermined speed, respectively, and the movement is controlled to complete the movement at the same time.

    According to a fifth aspect of the present invention, the game device is a portable game device, the posture sensor (7) is provided in the main body (2), and the posture sensor is a horizontal plane of the main body. It is configured to be able to detect the inclination with respect to.

    According to the present invention, by operating the attitude sensor (7), the relative positions of the scene layers (DVL, MVL, CVL) constituting the display game image (DGI) change with time, and accordingly The display game image (DGI) displayed on the display (3) also changes. As a result, it is possible to give the user a feeling as if the viewpoint has changed by operating the posture sensor (7) by the user.

    In addition, when the display game image (DGI) is switched between landscape and portrait according to the holding posture of the user's main body (2), the display game image (DGI) is a landscape display game image corresponding to each display game image (DGI). The maximum movement amount of the scene layer is larger in the horizontal direction of the display game image than in the vertical direction. In the case of a vertically long display game image, the maximum movement amount of the scene layer is the vertical direction of the display game image. If the control is made to be larger than the horizontal direction, it is possible to produce a change in viewpoint, that is, a peeping effect using the display width of each display game image displayed horizontally or vertically.

    Further, when one scene layer (DVL, MVL, or CVL) is fixed among the scene layers and the other scene layers are controlled to move relative positions with respect to the fixed scene layer, Expressions that change the user's viewpoint in various ways are possible.

    Furthermore, movement control is performed so that scene layers other than the fixed scene layer start moving at the same time, and the scene layers are moved without stopping at a predetermined speed during the movement, and the movement is completed at the same time. By doing so, it is possible to express the movement of the scene in a natural manner when moving the user's visual field when peeping.

    Note that the numbers in parentheses are for the sake of convenience indicating the corresponding elements in the drawings, and therefore the present description is not limited to the descriptions on the drawings.

FIG. 1 is a control block diagram of a portable game device to which the present invention is applied. 2A is a front view showing an example of a game machine to which the present invention is applied, FIG. 2B is a bottom view of FIG. 2A, and FIG. 2C is FIG. It is a side view of a). FIG. 3 is a diagram illustrating an example of a foreground layer. FIG. 4 is a diagram illustrating an example of a middle scene layer. FIG. 5 is a diagram illustrating an example of a distant view layer. FIG. 6 is a schematic diagram showing a game image generation method using a plurality of layers. FIG. 7 is a diagram illustrating an example of the generated game image. FIG. 8 is a diagram illustrating another example of the generated game image.

    Embodiments of the present invention will be described below with reference to the drawings.

    FIG. 1 shows a portable game device as a game machine constituting a computer. As shown in FIG. 2, the portable game apparatus 1 has a main body 2 that is sized to be portable by a user, and a display 3 is disposed on the main body 2. On the display surface 3a of the display 3, a known touch panel type input unit 5 is stacked on the display surface 3a in the thickness direction of the paper surface in the figure, and a graphic such as a button displayed on the display 3 by the user. A predetermined command can be input by touching an interface (not shown) with a fingertip or the like. In the case of the portable game apparatus 1 shown in FIG. 1, most inputs other than a viewpoint change command according to the present invention described later are performed by touching the display surface 3a of the display 3, and hence the input unit 5, with a finger. It has a configuration.

    As shown in FIG. 1, a control system of the game apparatus 1 is stored inside the main body 2, and the control system has a main control unit 5. The main control unit 5 includes the input unit 5, the attitude sensor 7, the game program memory 9, the image display unit 10 connected to the display 3, the layer control unit 11, and the tilt calculation unit via the bus line 6. 12, a layer generation unit 13 and a game image generation unit 15 are connected. These components are all installed in the main body 2, and the portable game device 1 is carried when the player carries the main body 2. Note that the block diagram shown in FIG. 2 exemplarily shows only the portion related to the present invention, and does not show the entire configuration of the actual portable game apparatus 1.

    In addition, the portable game apparatus 1 shown in FIG. 1 is not shown in the drawings by actually reading and executing a game program or other known control program stored in a memory such as the game program memory 9 by a computer. The CPU and the memory operate in a time-sharing manner by multitasking, and execute the functions shown in each block shown in FIG. However, the portable game apparatus 1 can be configured with hardware corresponding to each block, and each block can be configured to be controlled by CPUs or MPUs provided in a distributed manner in each block. Is possible.

    Since the portable game apparatus 1 has the above-described configuration, when the user plays a game, the touch panel type input unit 5 shown in FIG. 1 is operated to instruct the start of the game. In response to this, the main control unit 5 reads out the game program GPR from the game program memory 9, generates various game images based on the game program GPR, displays them on the display 3, and responds to the user in a corresponding manner. The game is executed in such a manner that an appropriate control command is input via the input unit 5.

    Based on the game program GPR, the main control unit 5 causes the game image generation unit 15 to generate the game image GI to be displayed on the display 3 as shown in FIG. 2. The game image GI is generated by the layer generation unit 13. It is generated in a form in which a plurality of layers that are generated two-dimensional images are superimposed.

    That is, the game image generation unit 15 instructs the layer generation unit 13 to generate a layer to be used for the game image when generating the game image GI to be displayed on the monitor 3 based on the game program GPR. To do. In response to this, the layer generation unit 13 reads out the layer data constituting the game image stored in the game program GPR from the game program memory 9, and becomes the source of the game image GI based on the read layer data. Generate multiple layers.

    The game image GI is composed of a plurality of scene layers, which are two-dimensional images each depicting a virtual viewpoint, and accordingly, a scene according to the distance from the viewpoint of the user who plays the game. That is, the scene layer constituting the game image GI has a near-ground portion CVL shown in FIG. 3 in which the distance from the virtual viewpoint is set to a short distance, and the distance from the virtual viewpoint is farther than the near scene. The middle scene layer MVL shown in FIG. 4 in which the middle scene portion set to the middle distance, which is a portion, is drawn, and the far scene portion in which the distance from the virtual viewpoint is a far distance that is a portion farther than the middle scene Is composed of three layers of the distant view layer DVL shown in FIG. Since the game image data specifying each game image GI stores the layer data LYD related to a plurality of layers constituting the game image GI, the game image generation unit 15 uses the layer data LYD to store the layer data LYD. The layer generation unit 13 instructed to generate is layer data that identifies a plurality of scene layers constituting the game image GI from the game image data of the game image GI, that is, the foreground, middle, and distant layers CVL, MVL, and DVL. The LYD can be read immediately from the game program GPR in the game program memory 9 to generate each layer CVL, MVL, DVL.

    In this way, the layer generation unit 13 immediately generates three foreground, middle and far view layers CVL, MVL, and DVL from the layer data LYD read from the game program GPR, and outputs them to the game image generation unit 15. In the embodiment of the present invention, the case where the game image GI is composed of the three layers of the foreground, middle background, and distant view layers CVL, MVL, and DVL is described. However, the number of layers constituting the game image GI is as follows. The number of layers is not limited to three, and each layer may be composed of four or more layers each composed of a distance, for example, a near view, a middle view, a middle view, and a distant view. Note that the sizes of the layers CVL, MVL, and DVL are arbitrary, and need not be equal to each other.

    In this way, when the plurality of layers generated for each distance constituting the game image GI are input, the game image generation unit 15 converts the input plurality of layers into the memory space as shown in FIG. In the form of overlapping at least partly on the XY coordinate plane, the foreground, middle and far view layers CVL, MVL, from the front side in the figure, that is, the side where the user's viewpoint VP when displayed on the display 3 should be positioned Arrange in the order of DVL. The relative positioning information in the vertical and horizontal directions in FIG. 6 of each layer CVL, MVL, and DVL at that time is instructed as attribute data of game image data for generating each game image GI. 15 arranges each layer CVL, MVL, DVL based on the positioning information, so that the game image GI can be easily generated.

    Thus, when the game image generation unit 15 generates a game image GI by superimposing a plurality of layers CVL, MVL, and DVL, the generated game image GI is output to the image display unit 10. The image display unit 10 is instructed by the attribute data of the game image data. The input game image GI, that is, a predetermined position on the superimposed layers CVL, MVL, DVL (that is, a predetermined position in the memory space) The display frame FL is set, the region surrounded by the display frame FL is determined as a portion to be displayed on the display 3, display data regarding the portion is generated and displayed on the display 3.

    Thereby, as shown in FIG. 2 and FIG. 7, a portion of the game image GI obtained by superimposing a plurality of layers CVL, MVL, and DVL, cut by the frame FL, is displayed on the display 3 as the display game image DGI. The As described above, in the display game image DGI, a plurality of layers CVL, MVL, and DVL are superimposed by the game image generation unit 15 at a default relative position defined by the attribute data of the game image data by the game program GPR. It is generated in the state. Accordingly, when the main control unit 5 is instructed by the game program GPR to display the image as the display game image DGI on the display 3 in accordance with the progress of the scenario of the game program GPR, The game image generation unit 15 and the image display unit 10 display the display game image DGI on the display 3 as a default display game image DGI.

    When the default display game image DGI is displayed on the display 3, the game program GPR detects the swinging state of the main body 2 of the game apparatus 1 with respect to the horizontal plane with respect to the tilt calculation unit 12 via the main control unit 5. To command. For example, as shown in FIG. 2C, the swinging state of the main body 2 with respect to the horizontal plane is a state in which the vertical line VL standing on the display surface 3a of the display 3 of the main body 2 is oriented in the horizontal direction. In the “upright” state, the main body 2 is swung in the directions of arrows A and B (angle α). As shown in FIG. 2B, the vertical line VL stands on the display surface 3 a of the display 3 of the main body 2. Is in the vertical direction, that is, when the main body 2 is “laid down”, the main body 2 is swung in the directions of arrows C and D (angle β). Normally, the main body 2 takes an intermediate state between the “laying down” state and the “standing” state, so that the swinging state of the main body 2 with respect to the horizontal plane is components in the directions of arrows A and B and arrows C and D, that is, The angles α and β can be expressed as a combined vector value.

    The tilt calculation unit 12 receives a swing state detection command of the main body 2 from the main control unit 5 and calculates the swing state of the main body 2 from the output of the attitude sensor 7. The attitude sensor 7 is a sensor that can detect and output the attitude of the main body 2 in the three-dimensional direction in real time, such as a three-dimensional acceleration sensor, a three-dimensional inclination sensor, and a geomagnetic sensor. From this output, the swinging state of the main body 2 of the game apparatus 1 with respect to the horizontal plane can be detected and calculated in real time.

    When it is determined that the swinging state of the main body 2 with respect to the horizontal plane, and thus the swinging angle obtained by combining the angles α and β, has reached a predetermined value or more, the tilt calculation unit 12 informs the layer control unit 11 to that effect. , Notify in the form of output as a signal. In response to the input of the signal, the layer control unit 11 performs the foreground, middle, and distant layers CVL, MVL constituting the game image GI with respect to the game image GI generated by the game image generation unit 15. Then, control is performed to change the relative position of the DVL left and right or up and down within the XY plane, which is the installation surface of the layers.

    That is, the inclination calculating unit 12 detects that the main body 2 of the game apparatus 1 is inclined by a predetermined angle or more with the main body right side surface 2a positioned below the left side surface 2b with respect to the horizontal plane, If the effect is passed to the layer control unit 11, the layer control unit 11 determines the relative positions of the foreground, middle and far view layers CVL, MVL, DVL constituting the game image GI as shown in FIG. From the default position specified by the attribute data of the game image data of GPR, with the distant view layer DVL being fixed, the foreground layer MVL is moved in the direction of arrow F by a predetermined amount D1, and the foreground layer CVL is further moved to the arrow F It is moved in the direction by a predetermined amount D2 (> D1) that is a movement amount larger than the movement amount of the middle scene layer MVL. Note that this movement of the layer in the direction of arrow F causes the layer control unit 11 to start moving the middle scene layer MVL and the foreground layer CVL other than the fixed far scene layer DVL at the same time, for a predetermined time t (for example, about 3 seconds). ), The movement of the middle scene layer MVL and the foreground layer CVL is continued without stopping at a predetermined speed. Then, when the predetermined time t has elapsed, the middle scene layer MVL and the foreground layer CVL are synchronously controlled so that the movement of the predetermined amounts D1 and D2 is completed simultaneously. Note that when there are three or more mid-ground layers MVL and foreground layers CVL, control is performed so that the amount of movement (predetermined amount) increases as the distance from the virtual viewpoint decreases.

    The layer control unit 11 starts moving the middle scene layer MVL and the foreground layer CVL in the direction of the arrow F, and thus the right side surface 2a, which is the direction in which the main body 2 is inclined, with respect to the distant view layer DVL via the game image generation unit 15. Then, since the game image GI composed of the plurality of layers CVL, MVL, and DVL is output to the image display unit 10 as it is, it is cut out by the display frame FL fixedly provided at a predetermined position in the memory space. From the state of FIG. 7 which is the default image of this place, the image displayed in the form is gradually changed to the predetermined amount D1 and the foreground layer CVL as shown in FIG. Is displayed on the display 3 so as to move in the direction of arrow F by a predetermined amount D2. That is, as the predetermined time t elapses, the distant view layer DVL, the middle view layer MVL, and the foreground layer CVL, which are the scene layers, move while changing the overlapping manner in the XY plane of FIG. The displayed display game image DGI is also displayed in such a manner that its display mode is changed every moment.

    As a result, the user who views the display game image DGI displayed on the display 3 moves the middle scene layer MVL by a predetermined amount D1 to the right in the direction of arrow F in FIG. 7, that is, the direction in which the main body 2 is tilted downward. Then, the foreground layer CVL is displayed so as to move by a predetermined amount D2 to the right, which is the direction in which the main body 2 is tilted downward. Thereby, for example, the image of the person PS displayed on the middle scene layer MVL moves to the position P2 in FIG. 8 which is shifted to the right by the distance D1 from the position P1 in FIG. 7, and on the foreground layer CVL. The image of the plant PL that has been displayed is displayed on the display 3 in a form moved to a position P4 in FIG. 8 that is shifted to the right by a distance D2 from the position P3 in FIG. Thus, the distant view layer DVL and the portion MP1 of the middle view layer MVL that have been hidden by the middle view layer MVL and the foreground layer CVL so far and cannot be seen by the user (illustrated, there are many other such portions. The portion MP2 that is not displayed on the display 3 in the foreground layer CVL (illustrated, and there may be many other such portions) is displayed on the screen as shown in FIG. Thus, it is displayed as if the user looked into the screen from the left side of FIG.

    Moreover, since the movement amount D2 of the foreground layer CVL is set to be larger than the movement amount D1 of the middle scene layer MVL, it is visually detected when the user looks into some object in daily life. Therefore, it is possible to appropriately reproduce the feeling that the foreground moves more than the distant view, and it is possible to express a natural look. In addition, the movement of each layer MVL and CVL to be moved is controlled at a predetermined time t so that the start time and the end time thereof coincide with each other. Can be done in a natural way.

    Further, as shown in FIG. 2A, the main body 2 of the game apparatus 1 is tilted by a predetermined angle or more with the left side surface 2b positioned below the right side surface 2a with respect to the horizontal plane. When the tilt calculation unit 12 detects and passes the fact to the layer control unit 11, the layer control unit 11 configures the game image GI as shown in FIG. The relative position of the foreground, middle and far background layers CVL, MVL, and DVL is changed from the default position specified by the attribute data of the game image data of the game program GPR, and the middle scene layer MVL is fixed. The foreground layer CVL is moved in the arrow E direction by a predetermined amount D1, and the foreground layer CVL is further moved in the arrow E direction by a predetermined amount D2 (> D1) which is a movement amount larger than the movement amount of the middle scene layer MVL. Note that the movement of this layer in the direction of arrow E (lateral direction) in the XY plane, which is the virtual installation plane, causes the layer control unit 11 to start moving the middle-ground layer MVL and the foreground layer CVL at the same time. After time t (for example, about 3 seconds), synchronous control is performed so that the movements of the predetermined amounts D1 and D2 are completed simultaneously.

    Then, from a user viewing the display game image DGI displayed on the display 3, although not shown, the middle scene layer MVL is located in the direction of arrow E in FIG. The foreground layer CVL is displayed so as to move by a predetermined amount D2 to the left. As a result, the distant view layer DVL or the foreground layer MVL (not shown) that has been hidden by the foreground layer MVL and the foreground layer CVL and could not be seen by the user, and the near view layer CVL are displayed on the display 3. The part (not shown) that has not been displayed is displayed on the screen, as if the user looked into the screen from the right side of FIG.

    In the above-described embodiment, when the main body 2 of the game apparatus 1 is tilted with respect to the horizontal plane, the layer control unit 11 fixes the distant view layer DVL and sets the mid-view layer MVL and the foreground layer CVL to the XY virtual. Although the case of moving in the directions of arrows E and F which are the left and right directions in the plane has been described, various other movement modes of the layers constituting the game image GI can be used. For example, the mid-ground layer MVL is fixed, the distant view layer DVL and the foreground layer CVL are in the same direction, for example, the distant view layer DVL is in the direction of arrow F (the right direction of the layer), and the foreground layer CVL is in the direction of arrow F (the right side of the layer). For example, a scene that looks into the scenery behind the person PS displayed on the middle scene layer MVL can be expressed. Furthermore, by fixing the foreground layer CVL and controlling the middle scene layer MVL and the far background layer DVL to move in the same direction, it is possible to express a scene such as looking into the room from a keyhole, for example. In this case, when the movement amount of the distant view layer DVL is larger than the movement amount of the middle view layer MVL, the situation of looking into the surroundings from the keyhole can be expressed more realistically.

    Further, the tilt direction of the main body 2 and the movement mode of each layer constituting the game image GI can be appropriately selected according to the contents to be expressed as described above. It does not need to coincide with the tilt direction of the main body 2 and can be performed in either the vertical direction or the horizontal direction on the XY virtual plane on which the stacked layers are installed. For example, as shown in FIG. 2C, the main body 2 is in a state in which the vertical line VL with respect to the display surface 3a of the display 3 is oriented in the horizontal direction, that is, in the state where the main body 2 is erected, By tilting each of the layers, the respective layers constituting the game image GI are moved relative to each other in the directions of arrows I and J parallel to the XY plane which is the installation plane of the layers in FIG. It is also possible to configure to allow different expression modes such as looking into or looking into from above. Moreover, it is also possible to control to move in a two-dimensional direction that is a layer installation direction, that is, in both the vertical and horizontal directions in the XY plane of FIG.

    In addition, a main body holding posture calculation unit (not shown) calculates and determines the holding posture of the main body 2 of the portable game apparatus 1 by the user based on the output from the posture sensor 7, and the user as shown in FIG. When it is determined that the display is held horizontally with respect to the user, the image display unit 10 displays the display frame FL with respect to each layer DVL, MVL, CVL as shown in FIG. When it is determined that the horizontally long display game image DGI is installed in the state and the display 3 is held vertically long for the user, the display frame FL of FIG. It can also be controlled to be rotated to 90 ° in the Y plane, placed in a vertically long state with respect to each layer DVL, MVL, and CVL, and switched to a state in which a vertically long display game image DGI is generated. Even in this case, the posture sensor 7 detects the inclinations of the main body in the arrows A and B directions and the G and H directions, and the layers DVL, MVL, and CVL are changed to the arrows E and F directions and the arrows I and J directions in FIG. In other words, the display game image DGI can be moved by different distances in the left-right direction and the up-down direction, so that the peeping effect from the top, bottom, left and right can be exhibited. At this time, as shown in FIG. 2A, when the display game image DGI is a horizontally long image, the direction of the arrows E and F corresponding to the left and right directions of the display game image DGI of the layers DVL, MVL, and CVL. The maximum movement amount (corresponding to D2 of the foreground layer CVL in the case of FIG. 6) is displayed in landscape orientation by setting it larger than the maximum movement amount in the arrow I and J directions corresponding to the vertical direction of the display game image DGI. It is possible to produce a peeping effect that makes use of the display width of the display game image DGI that is long on the left and right of the displayed image. Similarly, when the display game image DGI is a vertically long image (not shown), the maximum movement amounts of the layers DVL, MVL, and CVL in the arrow I and J directions corresponding to the vertical direction of the display game image DGI are set. By making the display game image DGI larger than the maximum amount of movement in the directions of arrows E and F corresponding to the left and right directions, it is possible to look into the display image of the display game image DGI that is long above and below the vertically displayed image. Effects can be produced.

    In the above-described embodiment, the case where the posture sensor 7 is built in the main body 2 of the portable game apparatus 1 has been described, but the posture sensor 7 does not necessarily need to be built in the main body 2. Alternatively, it may be configured to be portable by the user. In this case, each layer CVL, MVL, DVL is controlled to move according to the inclination of the attitude sensor 7 with respect to the horizontal plane, not the inclination of the main body 2. Further, the posture sensor 7 and the main body 2 are connected by radio such as infrared communication or by wire such as a wire. In this case, as long as the attitude sensor is portable, the game device is not necessarily a portable game device, and may be a stationary game device.

1 …… Game device (portable game device)
2 ... Main body 3 ... Display 7 ... Attitude sensor 10 ... Game image display means, display image switching means (image display section)
11: Layer control means (layer control unit)
12 …… Tilt calculation means (tilt calculation unit)
15 …… Layer control means (game image generation unit)
GI …… Game image VP …… Virtual viewpoint DGI …… Display game image DVL …… Distant view layer MVL …… Medium view layer CVL …… Foreground layer α, β, δ …… Inclination

Claims (4)

A display capable of displaying a display game image generated by overlaying a plurality of scene layers, each composed of a two-dimensional image drawn according to the distance from the virtual viewpoint, and a main body provided with the display And a game apparatus having an attitude sensor capable of detecting an inclination with respect to a horizontal plane and capable of changing a display game image displayed on the display in accordance with the inclination with respect to the horizontal plane detected by the attitude sensor. In
An inclination calculating means for determining that an inclination of the posture sensor with respect to a horizontal plane is equal to or greater than a predetermined value, and outputting a predetermined signal;
A layer control means for controlling movement while changing a relative position of the plurality of scene layers on a setting plane of the scene layer with a lapse of a predetermined time when the predetermined signal is input; and
In accordance with the movement of the scene layer by the layer control means, the game image display means for displaying the display game image generated from the moving scene layer on the display ,
A main body holding posture calculation means for calculating a holding posture by a user of the main body based on an output from the posture sensor; and
When it is determined that the display is held horizontally with respect to the user, the display game image is displayed on the display as a horizontally long display game image, and the display is vertically long with respect to the user. A display image switching means for controlling the display game image to be displayed on the display as a vertically long display game image when it is determined that the display game image is held as;
The layer control means can move the relative positions of the plurality of scene layers in directions corresponding to the vertical and horizontal directions of the display game image,
When the horizontally long display game image is displayed on the display, the layer control means further determines a maximum movement amount of the plurality of scene layers in a direction corresponding to a left-right direction of the display game image, When the display game image is set larger than the maximum movement amount in the direction corresponding to the vertical direction of the display game image and the vertically long display game image is displayed on the display, the display game image of the plurality of scene layers is displayed. A maximum movement amount in a direction corresponding to the up and down direction is set to be larger than a maximum movement amount in a direction corresponding to the left and right direction of the display game image.
A game device characterized by that. The scene layer includes at least three scene layers each drawn according to the distance from the virtual viewpoint,
The layer control means fixes one of the scene layers and controls the other scene layers so that the relative positions of the scene layers are moved with respect to the fixed scene layer. To
The game device according to claim 1 .
When moving the scene layer other than the fixed scene layer, the layer control means starts moving the scene layers other than the fixed scene layer at the same time. The movement is controlled without stopping at the same time, and the movement is controlled so as to complete the movement at the same time.
The game device according to claim 2 . The game device is a portable game device,
The orientation sensor, the is provided in the body, the attitude sensor can detect the inclination with respect to the horizontal plane of the body,
The game device according to claim 1, wherein:

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