JP2023182760A - Game program, information processing device and method - Google Patents

Abstract

To improve the visibility of a player character in a game simulating a competition realized by the AR technique.SOLUTION: In order to realize a game simulating a competition, a game program causes a computer including an imaging device and a display device to execute: an arrangement step (S112) of arranging a player character in a virtual space; a change step (S120) of changing a field angle of a virtual camera in accordance with the movement of the imaging device in a real space; and a display step (S122) of displaying a virtual image obtained by imaging the virtual space by the virtual camera so as to be superimposed on a real image obtained by imaging the real space by the imaging device. In the change step (S120), the field angle of the virtual camera becomes narrower as the virtual camera is closer to a region where the player character is arranged.SELECTED DRAWING: Figure 8

Description

The present invention relates to a technology for displaying virtual objects using AR technology.

2. Description of the Related Art Techniques for displaying virtual objects using AR (Augmented Reality) technology are known. For example, Patent Document 1 describes a display device that includes a portable display and an imaging means attached with the imaging direction directed toward the back surface of the display surface of the portable display. The display device displays, on the portable display, a composite image in which a virtual object is superimposed on a real image captured using an imaging device as a background. Moving the display device changes the size of the virtual object displayed on the portable display.

Patent No. 3558104 specification (registered May 28, 2004)

By the way, it is known that a computer can be used to create a game simulating a competition (for example, a soccer game, etc.). When realizing such a game using AR technology, a game in which the above-mentioned display device is directed toward a player character placed in a virtual stadium while being operated can be considered. In this case, the user performs an operation to move the above-mentioned display device closer to the player character in order to increase the display size of the player character. However, there is a limit to increasing the display size of the player by bringing the above-mentioned display device closer to the player character, and the visibility of the player character is not good.

One aspect of the present invention has been made to solve the above-mentioned problems, and an object thereof is to improve the visibility of player characters in a game simulating a competition realized by AR technology.

In order to solve the above problems, a game program according to one embodiment of the present invention provides a computer that includes an imaging device and a display device with a defined positional relationship with real space in order to realize a game that imitates a competition. a placement step of placing a player character in a virtual space in which a virtual camera is placed at a position in the virtual space corresponding to a position of the imaging device in the real space; a changing step of changing the angle of view of the virtual camera according to the movement of the imaging device; and a step of changing the angle of view of the virtual camera according to the movement of the imaging device; a display step of superimposing the image on the real image and displaying it on the display device, and in the changing step, the closer the virtual camera is to the area where the player character is placed, the narrower the angle of view of the virtual camera is. .

1 is a diagram schematically showing how a user plays a soccer game in Embodiment 1 of the present invention. FIG. 1 is a diagram schematically showing an example of a virtual reality space in Embodiment 1 of the present invention. FIG. 1 is a block diagram illustrating an example of the hardware configuration of an information processing device according to Embodiment 1 of the present invention. FIG. 1 is a block diagram showing the functional configuration of an information processing device according to Embodiment 1 of the present invention. FIG. It is a diagram showing an example of a virtual space in Embodiment 1 of the present invention. FIG. 3 is a diagram showing an example of the angle of view in Embodiment 1 of the present invention. It is a figure which shows another example of the angle of view in Embodiment 1 of this invention. 3 is a flowchart illustrating the operation of the information processing apparatus according to Embodiment 1 of the present invention. FIG. 3 is a diagram illustrating a detailed example of view angle changing processing according to Embodiment 1 of the present invention. FIG. 3 is a diagram illustrating a detailed example of virtual image generation processing according to Embodiment 1 of the present invention. FIG. 3 is a diagram showing an example of a visual field image in Embodiment 1 of the present invention. 12 is a diagram showing an example of a visual field image for comparison with FIG. 11. FIG. FIG. 13 is a diagram for comparing and explaining the angle of view in FIGS. 11 and 12. FIG. FIG. 2 is a block diagram showing the functional configuration of an information processing device according to Embodiment 2 of the present invention. 7 is a flowchart illustrating the operation of the information processing device according to Embodiment 2 of the present invention. It is a figure showing an example of a visual field image in Embodiment 2 of the present invention. It is a figure which shows another example of a visual field image in Embodiment 2 of this invention.

[Embodiment 1]
The information processing device 10 according to Embodiment 1 of the present invention will be described in detail below.

<Overview of information processing device 10>
The information processing device 10 is a device that implements a game simulating a competition using AR (Augmented Reality) technology. In this embodiment, soccer is used as the competition. Hereinafter, the game in the present invention will also be referred to as a soccer game.

FIG. 1 is a diagram schematically showing how a user plays a soccer game using an information processing device 10. As shown in FIG. As shown in FIG. 1, the information processing device 10 is configured by a portable computer equipped with a camera 14 and a touch panel 15 (display device 17). If the surface of the information processing device 10 on which the display device 17 is provided is defined as the "front surface," the camera 14 is provided on the "back surface." The imaging direction of the camera 14 is from the "front surface" to the "back surface".

As shown in FIG. 1, the user holds the information processing device 10, points the camera 14 at the marker R2 on the table R1 in real space, and starts playing a soccer game. The marker R2 is a disc-shaped object and has a predetermined pattern (in the example of FIG. 2, a star mark pattern) on its surface. The display device 17 displays a composite image in which a virtual image representing a virtual space is superimposed on a real image representing a real space. The virtual space is a virtual three-dimensional space in which virtual objects for playing a soccer game are arranged. The composite image displayed on the display device 17 represents a visual field image of a space in which the real space and the virtual space are combined. Hereinafter, a space where real space and virtual space are synthesized will also be referred to as virtual reality space.

FIG. 2 is a diagram schematically showing an example of a virtual reality space. As shown in FIG. 2, in the virtual reality space, objects V1a to V1f constituting a virtual soccer field existing in the virtual space and a plurality of player characters V2 are displayed on the top plate of a table R1 existing in the real space. , soccer ball V3 are arranged. A field area F on a virtual soccer field is divided by two objects V1a indicating a touch line and two objects V1b indicating a goal line. Furthermore, within the field area F, an object V1c indicating a center circle is arranged. In this embodiment, the object V1c indicating the center circle is arranged along the circumference of the marker R2. Furthermore, within the field area F, objects V1d indicating various other lines, such as lines dividing the penalty arc, the penalty area, and the goal area, are arranged. Further, around the field area F, an object V1e indicating a goal and an object V1f indicating a corner pole are arranged. Note that the virtual objects forming the virtual soccer field are not limited to the objects V1a to V1f, and may include other virtual objects. Hereinafter, when there is no need to specifically explain the objects V1a to V1f constituting the virtual soccer field, they will also be simply referred to as object V1.

Furthermore, each player character V2 and soccer ball V3 placed in the virtual space move on a surface on which a virtual soccer field is placed as the game progresses. The user plays a soccer game while moving the main body of the information processing device 10 so that the player character that he or she wants to operate moves so that the player character is included in the visual field image displayed on the touch panel 15. When the user moves the main body of the information processing device 10, the range of the real space imaged by the camera 14 changes, and accordingly, the visual field image of the virtual reality space displayed on the touch panel 15 also changes.

<Hardware configuration of information processing device 10>
FIG. 3 is a block diagram showing an example of the hardware configuration of the information processing device 10. The information processing device 10 includes a computer including a processor 11 , a main memory 12 , an auxiliary memory 13 , a camera 14 , a touch panel 15 , and a position sensor 16 . Touch panel 15 includes a display device 17 and an input device 18. The camera 14 is an example of an imaging device in the present invention. The processor 11, main memory 12, auxiliary memory 13, camera 14, touch panel 15, and position sensor 16 are connected to each other via a bus. Note that the computer constituting the information processing device 10 may further include a communication interface (not shown) that can communicate with other devices via a network.

As the processor 11, for example, a microprocessor, a digital signal processor, a microcontroller, or a combination thereof is used.

As the main memory 12, for example, a semiconductor RAM or the like is used.

As the auxiliary memory 13, for example, a flash memory, an HDD, an SSD, a portable storage medium, or a combination thereof is used.

The auxiliary memory 13 stores a game program and various programs according to the present embodiment that are executed by a computer constituting the information processing device 10 . In the game program according to the present embodiment, in order to realize a game simulating a competition (soccer game), a computer including an imaging device (camera 14) and a display device 17 has a defined positional relationship with real space. a placement step of placing the player character V2 in a virtual space in which a virtual camera is placed at a position in the virtual space corresponding to the position of the imaging device (camera 14) in the real space; a changing step of changing the angle of view of the virtual camera according to the movement of the imaging device (camera 14); and changing the virtual space from a virtual image taken by the virtual camera to a real image taken by the imaging device from the real space. A display step of displaying the player character V2 on the display device in a superimposed manner is executed, and in the changing step, the closer the virtual camera is to the area where the player character V2 is placed, the narrower the angle of view of the virtual camera is. The processor 11 loads the game program and various programs stored in the auxiliary memory 13 onto the main memory 12, and executes each instruction included in the loaded game program.

Further, the auxiliary memory 13 stores various data that the processor 11 refers to in order to operate the computer as the information processing device 10.

The camera 14 includes a lens and an image sensor, and generates a captured image by receiving light incident from the lens using the image sensor. The captured image shows the surroundings included in the range of the angle of view based on the direction in which the lens is directed (imaging direction). The angle of view may be fixed or variable within a predetermined range depending on the characteristics of the lens. In this embodiment, it is assumed that the lens included in the camera 14 is a single focus lens with a fixed angle of view.

The touch panel 15 is a device in which a display device 17 such as a liquid crystal display and an input device 18 such as a touch pad are combined together. The touch panel 15 uses the input device 18 to detect a touch operation on the display device 17 that displays an image.

The position sensor 16 detects the position and tilt of the information processing device 10. For example, the position sensor 16 is configured by a gyro sensor, an acceleration sensor, a geomagnetic sensor, a GPS (Global Positioning System) receiver, or a combination thereof.

<Functional configuration of information processing device 10>
FIG. 4 is a block diagram showing the functional configuration of the information processing device 10. The information processing device 10 includes a placement section 111, a change section 112, a display section 113, an AR control section 114, and a game progress section 115.

The placement unit 111 is a virtual space whose positional relationship with the real space is defined, and the player character is placed in the virtual space in which a virtual camera is placed at a position in the virtual space corresponding to the position of the camera 14 in the real space. Place V2. The detailed configuration of the arrangement section 111 will be described later.

The changing unit 112 changes the angle of view of the virtual camera according to the movement of the camera 14 in real space. Further, the changing unit 112 narrows the angle of view of the virtual camera as the virtual camera is closer to the area where the player character V2 is placed. The detailed configuration of the changing unit 112 will be described later.

The display unit 113 displays on the display device 17 a virtual image in which the virtual space is captured by the virtual camera, superimposed on a real image in which the real space is captured by the camera 14 . The detailed configuration of the display unit 113 will be described later.

The AR control unit 114 generates a virtual space whose positional relationship with the real space is defined, and arranges a virtual camera in the generated virtual space. Here, placing a virtual camera in the virtual space corresponds to setting a viewpoint in the virtual space. Further, the AR control unit 114 calculates various information for superimposing the virtual image on the real image so as to match the defined positional relationship. The various information includes information indicating the angle of view of the virtual camera. Here, the angle of view of the virtual camera is sometimes called the viewing angle. Note that the various information calculated by the AR control unit 114 may include information indicating the angle of view itself, or may include parameters for calculating the angle of view (for example, focal length and width of the virtual camera). It may be Hereinafter, "calculating (or acquiring) information indicating the angle of view" will also be simply referred to as "calculating (or acquiring) the angle of view." Furthermore, "changing the angle of view with reference to information indicating the angle of view" is also simply referred to as "changing the angle of view." The calculated various information is referred to by other units (arrangement unit 111, change unit 112, display unit 113, and game progress unit 115). The detailed configuration of the AR control unit 114 will be described later.

The game progress unit 115 performs processing related to the progress of the soccer game. The game progression unit 115 advances the soccer game by moving the player character V2 based on the user's operation using the input device 18. The game progress unit 115 may progress the soccer game as a single play game or as a multiplay game. In the case of a single-play game, the game progression unit 115 has a user team consisting of player characters V2 that can be operated by the user, and an opponent team consisting of player characters V2 whose actions are determined by the game progression unit 115 without being operated by the user. to play against. In the case of a multiplayer game, the game progress unit 115 includes a user team consisting of player characters V2 that can be operated by the user, and an opponent team consisting of player characters V2 that can be operated by another user who operates another information processing device 10. to play against.

(Detailed configuration example of AR control unit)
A detailed configuration example of the AR control unit 114 will be described. The AR control unit 114 has (1) a function of generating a virtual space, (2) a function of arranging a virtual camera (setting a viewpoint), and (3) a function of calculating the position of a specific object in the virtual space in the real space. , has. Note that the AR control unit 114 can be configured using a known technology having these functions. Details of each function will be explained below.

(1) Function to generate virtual space The AR control unit 114 generates a virtual space whose positional relationship with the real space is defined. FIG. 5 is a diagram illustrating an example of a virtual space generated by the AR control unit 114. As shown in FIG. 5, the AR control unit 114 sets the position of the real space where the information processing device 10 main body exists at the time when the functional block is activated as the origin P0, sets the horizontal plane in the real space as the XZ plane, and sets the real space as the XZ plane. A global coordinate system of a virtual space is generated in which the vertical direction in is the Y-axis direction. Note that global coordinates are also called world coordinates. The position where the main body of the information processing device 10 exists in the real space and the horizontal plane in the real space can be detected by the position sensor 16.

(2) Function of arranging a virtual camera The AR control unit 114 also arranges a virtual camera (setting a viewpoint) in the virtual space. Specifically, as shown in FIG. 5, the AR control unit 114 moves the information processing device 10 main body (camera 14) to a position P2 (X2, Y2, Z2) in the virtual space that corresponds to the position in the real space. , place a virtual camera. Note that P2 (X2, Y2, Z2) indicates coordinates in the global coordinate system. Further, the AR control unit 114 sets the imaging direction of the virtual camera so that it faces the direction d in the virtual space that corresponds to the imaging direction of the camera 14 in the real space. Note that the position and imaging direction of the camera 14 in real space can be detected by the position sensor 16.

Further, the AR control unit 114 updates the arrangement of the virtual cameras according to the movement of the camera 14. Movement of the camera 14 refers to a change in the position of the camera 14 in real space and/or the imaging direction. When the user holds and moves the information processing device 10, the position of the camera 14 in real space and/or the imaging direction change. The AR control unit 114 updates the position and imaging direction of the virtual camera in the virtual space to correspond to the position and imaging direction of the camera 14 in the real space.

Furthermore, the AR control unit 114 calculates the viewing angle of the virtual camera for superimposing the virtual image on the real image so as to match the positional relationship defined between the real space and the virtual space. For example, the angle of view of such a virtual camera is the same value as the angle of view of camera 14. For example, the AR control unit 114 acquires the angle of view of the camera 14 stored in the auxiliary memory 13, and sets the acquired angle of view as the angle of view of the virtual camera.

(3) Function to calculate the position of a specific object in real space in virtual space The AR control unit 114 calculates the position of a specific object in real space in virtual space. Specifically, the AR control unit 114 detects a region including a specific object in the real image acquired from the camera 14, and analyzes the position of the object indicated by the detected region in the real space. Furthermore, the AR control unit 114 calculates a position in the virtual space that corresponds to the analyzed position in the real space. In this embodiment, a marker R2 having a predetermined pattern (a star mark in this example) on its surface is set as the specific object. Further, the shape and size of a specific object are defined. In this example, marker R2 is circular and has a defined diameter. Therefore, the AR control unit 114 determines the position of the marker R2 in the real space and the corresponding Calculate the position in virtual space. For example, in the example of FIG. 5, a point P (X1, Y1, Z1) in the global coordinate system is calculated as the position of the marker R2 in the virtual space.

(Detailed configuration of arrangement section 111)
The placement unit 111 places virtual objects including a plurality of player characters V2 in the virtual space generated by the AR control unit 114. Specifically, the placement unit 111 acquires the global coordinates of the marker R2 calculated by the AR control unit 114, and sets a local coordinate system with the global coordinates as the origin. In the example of FIG. 5, the local coordinate system has the origin at position P1 (X1, Y1, Z1) of marker R2, the plane parallel to the XZ plane as the xz plane, and the direction parallel to the Y axis direction as the y axis direction. Set. Further, as shown in FIG. 5, the arrangement unit 111 arranges various objects V1 constituting a virtual soccer field on the xz plane of the local coordinate system. The various objects V1 are arranged so that the center of the virtual soccer field becomes the origin of the local coordinate system. Further, the placement unit 111 places a plurality of player characters V2 in a field area F defined by the placement of various objects V1. Note that FIG. 5 shows some of the various objects V1 and some of the plurality of player characters V2, and omits illustration of other parts. Further, the placement unit 111 moves the position of each player character V2 in the local coordinate system as the soccer game progresses.

(Detailed configuration of changing unit 112)
The detailed configuration of the changing unit 112 will be explained. In the process of changing the angle of view of the virtual camera according to the movement of the camera 14 in real space, the changing unit 112 narrows the angle of view of the virtual camera as the virtual camera is closer to the area where the player character V2 is placed. . Hereinafter, the process of changing the viewing angle will also be referred to as a viewing angle changing process. Here, in this embodiment, the field area F is applied as the "area where the player character V2 is placed." That is, the changing unit 112 executes the view angle changing process so that the closer the virtual camera is to the field area F, the narrower the view angle of the virtual camera. A specific configuration for calculating the distance between the field area F and the virtual camera will be described later.

The view angle changing process includes a process of narrowing the view angle as the virtual camera approaches the field area F. The image changing process also includes a process of widening the angle of view as the virtual camera moves away from the field area F.

Further, the changing unit 112 obtains the angle of view of the virtual camera for superimposing the virtual image on the real image so as to match the positional relationship between the real space and the virtual space, and changes the obtained angle of view. Here, "the angle of view of the virtual camera for superimposing the virtual image on the real image so as to match the positional relationship between the real space and the virtual space" is calculated by the AR control unit 114 as described above. In other words, the changing unit 112 obtains the angle of view of the virtual camera calculated by the AR control unit 114, and changes the obtained angle of view.

Here, when the AR control unit 114 is realized by a known technique, the auxiliary memory 13 contains, in addition to the game program according to the above-mentioned embodiment, information for causing the information processing device 10 to function as the AR control unit 114. A known program is stored. By configuring the changing unit 112 to change the angle of view acquired from the AR control unit 114, portability and reusability of the game program according to the present embodiment can be improved.

Furthermore, the changing unit 112 applies the distance between the position of the virtual camera and the intersection point where a straight line extending from the virtual camera in the imaging direction intersects with the field area F as the distance between the field area F and the virtual camera.

Specifically, the changing unit 112 changes the distance L between the virtual camera and the point of intersection where a straight line extending from the virtual camera in the imaging direction intersects with the area where the player character V2 is placed (field area F in this embodiment). The smaller the value, the narrower the virtual camera's angle of view. In other words, if the straight line extending from the virtual camera in the imaging direction does not intersect with the field area F, the changing unit 112 does not perform the process of narrowing the angle of view of the virtual camera.

Specifically, the changing unit 112 calculates the position of the above-mentioned intersection by acquiring the position and imaging direction of the virtual camera calculated by the AR control unit 114. In the example of FIG. 5, the changing unit 112 calculates an intersection point P3 (X3, Y1, Z3) where a straight line extending from the virtual camera position P2 in the imaging direction d intersects with the field area F. The changing unit 112 also calculates the distance L from the virtual camera position P2 to the intersection P3.

Note that the changing unit 112 does not perform the process of narrowing the angle of view when the distance L between the virtual camera position P2 and the above-mentioned intersection P3 is greater than the threshold L1, but executes the process when it is equal to or less than the threshold L1. Further, the changing unit 112 does not need to perform the process of narrowing the angle of view when the above-mentioned distance L is smaller than the threshold L2 (L2<L1). In this case, in other words, the changing unit 112 executes the process of narrowing the angle of view within the range where the distance L is greater than or equal to L2 and less than or equal to L1. Further, the changing unit 112 continuously changes the angle of view as the virtual camera approaches the field area F.

A specific example of the view angle changing process in a range where the distance L is greater than or equal to L2 and less than or equal to L1 will be described with reference to FIGS. 6 and 7. 6 and 7 are top views of a virtual soccer field in virtual space, respectively. Note that in FIGS. 6 and 7, some of the various objects V1 and some of the plurality of player characters V2 are shown, and illustration of other parts is omitted.

In FIG. 6, the virtual camera is placed at a position P2 where the distance to the intersection P3 is L=L1. At this time, the angle of view of the virtual camera is the angle of view r1 set by the AR control unit 114.

In FIG. 7, the virtual camera is placed at a position P2 where the distance to the intersection P3 is L=L2. At this time, the angle of view of the virtual camera is the minimum angle of view r2 (r2<r1). As the minimum angle of view r2, a value smaller than the angle of view r1 is set in advance.

In this case, if the distance L is larger than the threshold L1, the changing unit 112 sets the viewing angle r1 of the virtual camera calculated by the AR control unit 114 as it is without changing it. Furthermore, when the distance L is smaller than the threshold L2, the changing unit 112 sets the angle of view of the virtual camera to the minimum angle of view r2. Furthermore, when the distance L is greater than or equal to L2 and less than or equal to L1, the changing unit 112 continuously (for example, linearly) changes the angle of view from the angle of view r1 for the distance L1 to the angle of view r2 for the distance L2. Note that the continuous change in the angle of view may be a linear change or other continuous change. For example, the changing unit 112 may increase the rate of change in the angle of view as the virtual camera approaches the field area F.

In this way, the display size of the player character becomes larger than when the information processing device 10 (that is, the camera 14) is brought closer to the player character V2 because the virtual camera is brought closer to the field area F to a distance equal to or less than the threshold value L1. limited to cases. Furthermore, when the virtual camera is farther from the field area F than the threshold value L1, the player character is displayed at a display size commensurate with the distance. Therefore, changing the display size becomes more natural for the user. Further, by adjusting the distance from the virtual camera to the field area F, the display size of the player character V2 changes continuously, so that the user can display the player character V2 at a desired display size. Further, when increasing the change rate of the angle of view as the virtual camera approaches the field area F, the user can increase the display size of the player character V2 more rapidly as the virtual camera approaches the player character V2.

(Detailed configuration of display unit 113)
The detailed configuration of the display unit 113 will be explained. The display unit 113 generates a virtual image that captures a virtual space in which various objects V1 and player characters V2 are arranged by the arrangement unit 111 using a virtual camera to which the angle of view changed by the change unit 112 is applied. Further, the display unit 113 superimposes the generated virtual image on the real image generated by the camera 14 and displays the superimposed virtual image on the display device 17 .

<Operation of information processing device 10>
The operation of the information processing device 10 configured as above will be explained. In order to realize a game simulating a competition, the information processing device 10 is a virtual space whose positional relationship with the real space is defined, and the information processing device 10 is located at a position in the virtual space corresponding to the position of the camera 14 in the real space. a placement step of placing a player character in a virtual space where a virtual camera is placed; a changing step of changing the viewing angle of the virtual camera according to the movement of the camera 14 in the real space; and a step of photographing the virtual space with the virtual camera. a display step of displaying the virtual image on the display device 17 by superimposing the virtual image of the real space on the real image captured by the camera 14; Then, the closer the virtual camera is to the field area F), the narrower the angle of view of the virtual camera is.

FIG. 8 is a flowchart illustrating the operation of the information processing device 10.

In step S100, the game progress unit 115 executes processing to start a soccer game. The processes to be started include, for example, a process of acquiring information indicating the user team and the opponent team, a process of acquiring information indicating player characters included in each team, and the like.

In step S102, the AR control unit 114 generates a virtual space whose positional relationship with the real space is defined. Specifically, the AR control unit 114 generates a global coordinate system of the virtual space whose origin is the position of the information processing device 10 (that is, the camera 14) in the real space at the time of executing this step. Further, the AR control unit 114 arranges a virtual camera at the origin of the global coordinates in a direction corresponding to the imaging direction of the camera 14.

In step S104, the AR control unit 114 rearranges the virtual camera in the virtual space based on information regarding the current arrangement of the virtual camera and information obtained from the position sensor 16. Specifically, the AR control unit 114 relocates the virtual camera to position P2 in the virtual space in the imaging direction d based on the position and imaging direction of the information processing device 10 in the real space. Thereafter, the AR control unit 114 updates the arrangement of the virtual cameras in accordance with the movement of the camera 14. Further, the AR control unit 114 sets the angle of view of the camera 14 as the angle of view of the virtual camera.

In step S106, the AR control unit 114 calculates the position P1 in the virtual space of the marker R2 existing in the real space.

In step S108, the game progression unit 115 executes processing to advance the soccer game. The processing to proceed includes, for example, a process of generating a local coordinate system with the origin at position P1 of marker R2, a process of generating a world coordinate transformation matrix for converting local coordinates into global coordinates (also referred to as world coordinates), This includes processing for updating the movement destinations of the player character V2 and the soccer ball V3 in response to user operations.

In step S110, the arrangement unit 111 arranges various objects V1 constituting a virtual soccer field in the virtual space. Specifically, the placement unit 111 places various objects V1 on the xz plane of the local coordinate system.

In step S112, the placement unit 111 places the player character V2 and the like in the virtual space. Specifically, as the game progresses in step S108, the placement unit 111 places a plurality of player characters V2, soccer balls V3, etc. in the field area F defined by the object V1 placed on the xz plane of the local coordinate system. Place. In other words, the placement unit 111 updates the local coordinates of the player character V2, soccer ball V3, etc. in the virtual space.

In step S114, the changing unit 112 obtains the angle of view of the virtual camera calculated by the AR control unit 114.

In step S116, the changing unit 112 obtains the distance L between the virtual camera position P2 and the intersection P3.

In step S118, the changing unit 112 determines whether the viewing angle changing condition is satisfied. Here, the view angle change condition is a condition that the distance L acquired in step S116 is less than or equal to the threshold value L1 and greater than or equal to the threshold value L2. If No in step S118, processing in step S122, which will be described later, is executed. If Yes in step S118, the process of the next step S120 is executed.

In step S120, the changing unit 112 changes the angle of view so that the closer the distance L between the position P2 of the virtual camera and the intersection P3, the narrower the angle of view. Note that if the distance L acquired in the current processing flow is smaller than the distance L acquired in the previous processing flow, the virtual camera is closer to the field area F than in the previous processing flow. In this case, the changing unit 112 makes the angle of view narrower than the previous time. On the other hand, if the distance L acquired in the current processing flow is larger than the distance L acquired in the previous processing flow, the virtual camera is farther from the field area F than in the previous processing flow. In this case, the changing unit 112 makes the angle of view wider than the previous time. A detailed example of the processing in this step will be described later.

In step S122, the display unit 113 displays, on the display device 17, a real image on which a virtual image captured in the virtual space is superimposed, using the set angle of view or the changed angle of view. For example, the display unit 113 may (1) generate an image by combining a virtual image and a real image and display it on the display device 17, or (2) display the generated virtual image without combining it with a real image into a real image. It may be displayed on the display device 17 by being superimposed on the image. A detailed example of this step will be described later.

In step S124, the game progression unit 115 determines whether a predetermined time has elapsed. If No in step S124, the process in step S124 is executed again. That is, the process of step S124 is repeatedly executed until the determination is Yes. If Yes in step S124, the information processing device 10 repeats the processing from step S104. Here, an example of the predetermined time is 1/30 second. In this case, 30 images are generated and displayed per second. However, the predetermined time is not limited to this.

<Detailed example of view angle change processing>
FIG. 9 is a diagram schematically showing a detailed example of the view angle changing process in step S120. In this example, the changing unit 112 acquires the width and focal length of the virtual camera as information indicating the angle of view from the AR control unit 114, and changes the angle of view of the virtual camera by changing the acquired focal length. . Specifically, the changing unit 112 executes the view angle changing process of the virtual camera for each of the view angle on the X axis and the view angle on the Y axis. Note that the X-axis and Y-axis are coordinate axes in a view coordinate system having the position of the virtual camera as the origin and the imaging direction as the Z-axis direction.

Specifically, first, the changing unit 112 acquires the width (ImageResolutionX) and focal length (FocalLengthXB) of the virtual camera on the X axis shown in the schematic diagram 9001 from the AR control unit 114. In addition, the changing unit 112 applies the acquired width (ImageResolutionX) and focal length (FocalLengthXB) of the virtual camera, and the focal length adjustment value Calculate the angle of view XA. “FocalLengthXB*adjustment value X” in equation (1) represents the adjusted focal length (FocalLengthXA) shown in the schematic diagram 9001. In this way, the angle of view XB when the focal length is (FocalLengthXB) on the X-axis is changed to the angle of view XA by changing the focal length to (FocalLengthXA).

Similarly, the changing unit 112 acquires the width (ImageResolutionY) and focal length (FocalLengthYB) of the virtual camera on the Y axis shown in the schematic diagram 9002 from the AR control unit 114. In addition, the changing unit 112 applies the acquired width (ImageResolutionY) and focal length (FocalLengthYB) of the virtual camera, and the focal length adjustment value Y to equation (2) shown in equation 9003, so that the changed Calculate the angle of view YA. “FocalLengthYB*adjustment value Y” in equation (2) represents the adjusted focal length (FocalLengthYA) shown in the schematic diagram 9002. In this way, the angle of view YB when the focal length is (FocalLengthYB) on the Y axis is changed to the angle of view YA by changing the focal length to (FocalLengthYA).

Note that the adjustment value X and the adjustment value Y are determined according to the game progress process. In this example, adjustment value X and adjustment value Y are values greater than 1. That is, the changing unit 112 narrows the angle of view by increasing the focal length. Note that the adjustment value X and the adjustment value Y are not limited to values larger than 1. For example, the adjustment value X and the adjustment value Y may be set to a value greater than 0 and less than 1. In this case, the changing unit 112 widens the angle of view by shortening the focal length.

Note that the adjustment value X and the adjustment value Y may be the same value. In this case, the angle of view on the X axis and the angle of view on the Y axis are changed at the same rate. However, the adjustment value X and the adjustment value Y may be different values. The changing unit 112 changes the angle of view on the X axis and the angle of view on the Y axis by appropriately setting some or all of parameters such as aspect ratio, adjustment value X, and adjustment value Y shown in FIG. 10, which will be described later. may be controlled separately.

<Detailed example of virtual image generation processing>
A detailed example of the virtual image generation process in step S122 will be described with reference to FIG. 10. Here, an example of processing for generating an image that is a composite of a virtual image and a real image will be described. In step S122, the display unit 113 generates a projection coordinate transformation matrix with reference to the angle of view changed in step S120. The projection coordinate transformation matrix is a transformation matrix used in the process of generating a virtual image, and is calculated according to the viewing angle of the virtual camera.

FIG. 10 is a diagram schematically illustrating an example of a projection coordinate transformation matrix. Note that the project coordinate transformation matrix is generated according to the projection method. Here, an example of a project coordinate transformation matrix when perspective projection is applied is shown. Perspective projection is a projection method in which objects of the same size are projected larger the closer they are to the virtual camera.

The display unit 113 generates a projection coordinate transformation matrix 1001, as shown in FIG. The projection coordinate transformation matrix 1001 is a matrix with 4 rows and 4 columns. The 1st row and 1st column component in the projection coordinate transformation matrix 1001 is calculated by Equation (3) shown in Equation 1002. Further, the 2nd row and 2nd column component is calculated by equation (4). Further, the 3rd row and 3rd column component is calculated by equation (5). Further, the 4th row and 3rd column component is calculated by equation (6). Furthermore, 1 is applied as the 3rd row and 4th column component. Further, 0 is applied to other components in the projection coordinate transformation matrix 1001. Note that aspect in equation (3) indicates the aspect ratio applied to the virtual image. Furthermore, near in equations (5) and (6) indicates the distance from the virtual camera to the front surface of the clip space, and far indicates the distance from the virtual camera to the rear surface of the clip space. Note that the clip space represents a space imaged by a virtual camera.

A detailed example of the process of generating a virtual image using the projection coordinate transformation matrix generated in this manner will be described. The display unit 113 first performs world coordinate transformation and view on the positions in the local coordinate system of various objects V1, player characters V2, soccer balls V3, etc. that constitute a virtual soccer field arranged in the virtual space. Each process of coordinate transformation and projection coordinate transformation is executed in this order. World coordinate transformation is a process of transforming a local coordinate system into a global coordinate system, and the world coordinate transformation matrix calculated in step S108 is used. View coordinate transformation is a process of transforming the global coordinate system into a view coordinate system with the virtual camera position as the origin and the imaging direction as the depth direction, and a view coordinate transformation matrix is used. The display unit 113 generates a view coordinate transformation matrix based on the position and imaging direction of the virtual camera obtained from the AR control unit 114. The projection coordinate transformation is as described above, and the projection coordinate transformation matrix calculated with reference to the angle of view as described above is used. Furthermore, the display unit 113 pastes the real image generated by the camera 14 on the billboard as a texture. A billboard is a plate-shaped object placed in virtual space so as to face the virtual camera. The display unit 113 generates an image that is a composite of the virtual image and the real image by rendering various objects V1, player characters V2, soccer balls V3, billboards, etc. at the positions whose coordinates have been transformed in this way.

<Example of visual field image>
FIG. 11 is a diagram showing an example (specific example) of a visual field image displayed on the display device 17. The field of view image G1 shown in FIG. 11 is a virtual image generated by narrowing the viewing angle of the virtual camera and superimposed on a real image.

FIG. 12 is a diagram showing an example (comparative example) of a visual field image for comparison with FIG. 11. The visual field image G9 shown in FIG. 12 is a virtual image generated without changing the viewing angle of the virtual camera when the virtual camera arrangement is the same as in FIG. 11, and is superimposed on the real image. In FIG. 12, both the real image and the virtual image are captured at an angle of view r1.

11 and 12, visual field images G1 and G9 each include a player character V2, a soccer ball V3, an object V1c indicating a center circle, and a marker R2. The player character V2, the soccer ball V3, and the object V1c are included in the virtual image. Marker R2 is included in the real image. The field of view images G1 and G9 are both displayed on the display device by the user's operation of moving the main body of the information processing device 10 to bring the virtual camera closer to the player character V2 in order to display the player character V2 that the user wants to operate in a larger display size. 17 is displayed. Note that such a user operation will hereinafter also be simply referred to as an operation of bringing the object closer.

FIG. 13 is a diagram illustrating a comparison of the angles of view in FIGS. 11 and 12. As shown in FIG. 13, the field of view image G1 (FIG. 11), which is a specific example of this embodiment, is a real image captured by the camera 14 with a field of view r1, and a field of view image G1 set to a field of view r3 (r3<r1). This is a superimposed virtual image captured by a virtual camera. On the other hand, in the field of view image G9 (FIG. 12), which is a comparative example, a virtual image captured by a virtual camera set to the same angle of view r1 is added to a real image captured by the camera 14 having the same angle of view r1. They are superimposed.

The player character V2, the soccer ball V3, and the object V1c indicating the center circle included in the visual field image G1 (FIG. 11) are zoomed compared to these objects included in the visual field image G9 (FIG. 12). In this manner, in the comparative example, even if the user performs an operation to bring the player character closer, the display size of the player character V2 only increases by the amount that the player character V2 approaches. On the other hand, in the specific example according to the present embodiment, when the user performs an operation to bring the player character closer, the display size of the player character V2 becomes larger than the amount by which the player character V2 approaches.

Note that in the visual field image G1, the viewing angle r1 of the camera 14 that captured the real image is different from the viewing angle r3 used as a parameter when calculating the projection transformation matrix used to generate the virtual image. Therefore, the original positional relationship between real space and virtual space is not maintained. For example, the object V1c indicating the center circle, which should have been along the circumference of the marker R2, is not along the circumference. However, even if the positional relationship between the real space and the virtual space is not maintained once, if the virtual camera moves away from the field area F by a threshold value L1 or more thereafter, the positional relationship between the real space and the virtual space will be aligned again. In addition, since the user performs the above-described bringing closer operation in order to enlarge the display operation of the player character V2, the user does not feel uncomfortable even if the player character is zoomed in more than the amount that the player character is brought closer to due to the bringing closer operation. Therefore, even if the positional relationship between the real image and the virtual image is not maintained temporarily, there is a great advantage that the display size of the player character V2 can be increased without causing any discomfort.

<Effects of this embodiment>
As described above, according to the present embodiment, when the user performs an operation to move the information processing device 10 to bring the virtual camera closer to the player character in order to increase the display size of the player character placed in the virtual space, The angle of view of the virtual camera becomes narrower. Therefore, the display size of the player character becomes larger by the amount that the virtual camera approaches the player character. As a result, this embodiment can improve the visibility of player characters in a soccer game realized by AR technology.

[Embodiment 2]
An information processing device 10A according to a second embodiment of the present invention will be described below. The information processing device 10A is a device that implements a soccer game using AR technology, similar to the information processing device 10 according to the first embodiment. For convenience of explanation, members having the same functions as those described in Embodiment 1 will be denoted by the same reference numerals, and the description thereof will not be repeated.

<Functional configuration of information processing device 10A>
FIG. 14 is a block diagram showing the functional configuration of the information processing device 10A. Note that an example of the outline and hardware configuration of the information processing device 10A is as described in Embodiment 1 with reference to FIGS. 1 to 3, so detailed description will not be repeated. The information processing device 10A includes a placement section 111, a changing section 112A, a display section 113, an AR control section 114, and a game progress section 115.

The configurations of the arrangement section 111, display section 113, AR control section 114, and game progression section 115 are the same as described in Embodiment 1, so detailed explanations will not be repeated.

The changing unit 112A changes the size of the player character V2 in the virtual space according to the movement of the camera 14 in the real space. Furthermore, the changing unit 112A increases the size of the player character in the virtual space as the virtual camera is closer to the area where the player character V2 is placed. Note that in this embodiment as well, as in the first embodiment, the field area F is applied as the "area where the player character V2 is placed."

Hereinafter, the process of enlarging the size of the player character V2 in the virtual space as the virtual camera is closer to the field area F will also be simply referred to as a size change process. The size change process includes a process of increasing the size of the player character V2 in the virtual space as the distance L becomes smaller. The size change process also includes a process of reducing the size of the player character V2 in the virtual space as the distance L increases.

For example, the changing unit 112A may change the size in the virtual space of each player character V2 that is placed at least within the field of view of the virtual camera among the plurality of player characters V2 placed in the virtual space.

Furthermore, for example, the changing unit 112A may change the size in the virtual space of a specific player character V2 among the plurality of player characters V2 arranged in the virtual space. The specific player character V2 may be, for example, a player character V2 designated by a user operation (for example, a tap operation). Further, the specific player character V2 may be a player character V2 placed on a straight line extending from the position of the virtual camera in the imaging direction.

Furthermore, the changing unit 112A increases the size of the player character V2 in the virtual space as the distance L between the virtual camera and the intersection point where a straight line extending from the virtual camera in the imaging direction intersects with the field area F increases. In other words, the changing unit 112A does not perform the size changing process when a straight line extending from the virtual camera in the imaging direction does not intersect with the field area F. Note that the details of the process of calculating the distance L from the virtual camera position P2 to the intersection P3 are as described in Embodiment 1 with reference to FIG. 5, so detailed description will not be repeated.

Further, the changing unit 112A does not perform the size changing process when the distance L between the virtual camera position P2 and the above-mentioned intersection P3 is greater than the threshold L1, but executes the size changing process when it is equal to or less than the threshold L1. Further, the changing unit 112A does not need to perform the size changing process when the distance L between the virtual camera and the above-mentioned intersection P3 is smaller than the threshold L2 (L2<L1). In this case, in other words, the changing unit 112A executes the size changing process within a range where the distance L is greater than or equal to L2 and less than or equal to L1.

Further, the changing unit 112A continuously changes the size of the player character V2 in the virtual space as the virtual camera approaches the field area F. In this case, the changing unit 112A continuously changes the magnification for the size determined in the virtual space for the corresponding player character V2 from the magnification n1 for the distance L1 (n1=1) to the magnification n2 for the distance L2 (n2>n1). (e.g., linearly). Note that the continuous change in size in the virtual space may be a linear change or some other change. For example, the changing unit 112A may increase the rate of change in the magnification described above as the virtual camera approaches the field area F.

<Operation of information processing device 10A>
The operation of the information processing device 10 configured as above will be explained. FIG. 15 is a flowchart illustrating the operation of the information processing device 10A.

From steps S100 to S116, the information processing device 10A operates in the same manner as the information processing device 10 according to the first embodiment.

In step S118A, the change unit 112A determines whether the size change condition is satisfied. Here, the size change condition is a condition that the distance L acquired in step S116 is less than or equal to the threshold value L1 and greater than or equal to the threshold value L2. If No in step S118A, processing in step S122, which will be described later, is executed. If Yes in step S118A, the next process of step S120A is executed.

In step S120A, the changing unit 112A performs a size changing process so that the closer the distance L between the virtual camera position P2 and the intersection P3, the larger the size of the player character V2 in the virtual space. Note that if the distance L acquired in the current processing flow is smaller than the distance L acquired in the previous processing flow, the virtual camera is closer to the field area F than in the previous processing flow. In this case, the changing unit 112A enlarges the size of the player character V2 in the virtual space compared to the previous size. On the other hand, if the distance L acquired in the current processing flow is larger than the distance L acquired in the previous processing flow, the virtual camera is farther from the field area F than in the previous processing flow. In this case, the changing unit 112A makes the size of the player character V2 in the virtual space smaller than the previous size.

From steps S122 to S124, the information processing device 10A operates in the same manner as the information processing device 10 according to the first embodiment. This concludes the explanation of the operation of the information processing device 10A.

<Example of visual field image>
FIG. 16 is a diagram showing an example of a visual field image displayed on the display device 17. In the field of view image G1A shown in FIG. 16, the size in the virtual space of each player character V2 arranged at least within the field angle range of the virtual camera is enlarged. FIG. 17 is a diagram showing another example of the visual field image displayed on the display device 17. In the visual field image G1B shown in FIG. 17, the size of the specific player character V2 in the virtual space is enlarged.

<Effects of this embodiment>
According to the present embodiment, when the user performs an operation to move the information processing device 10 to bring the virtual camera closer to the player character in order to increase the display size of the player character placed in the virtual space, the player character's virtual The size in space is automatically increased. Therefore, the display size of the player character becomes larger by the amount that the virtual camera approaches the player character. As a result, this embodiment can improve the visibility of player characters in a soccer game realized by AR technology.

[Modification 1]
In each of the embodiments described above, an example has been described in which a soccer game imitating soccer is realized. However, each embodiment can be modified to apply not only soccer but also other sports as a game in the present invention. Examples of other sports include baseball, rugby, etc., but the invention is not limited to these, and any game in which players move around a stadium may be used.

Note that, as other games, games in which the ratio of player height to field size is relatively small, such as soccer, are suitable.

For example, according to the "Soccer Competition Rules 2018/19" published by the Japan Football Association, the length of the long side (touch line) of a soccer field is 90 to 120 meters. If the height of the player is approximately 1 to 2.5 meters, the ratio to the length of the touchline is approximately 0.0083 to 0.0278. On the other hand, for example, according to the "2018 Basketball Competition Rules" published by the Japan Basketball Association, the length of the long side (vertical) of a basketball court is 28 meters. If the height of the player is approximately 1 to 2.5 meters, the ratio to the length of the touchline is approximately 0.0357 to 0.0893. Thus, in soccer, the ratio of player height to field size is smaller than in basketball.

When creating games that imitate each of these sports, if the soccer field and basketball court placed in virtual space are approximately the same size, the size of the player character in the soccer game in virtual space will be smaller than that of the player character in the basketball game. becomes smaller. Therefore, even if the virtual camera is brought sufficiently close to the player character, if the angle of view change processing or size change processing in each embodiment is not performed, the display size of the player character will be smaller in a soccer game than in a basketball game, resulting in poor visibility. is not good.

As described above, taking basketball as an example, sports such as soccer, baseball, and rugby are sports in which the ratio of player height to field size is relatively small. In a game that simulates a competition where the ratio of player height to field size is relatively small, the display size of player character V2 may not be large enough from the perspective of user visibility if the display size of player character V2 is increased accordingly as the virtual camera approaches. Often you can't say it.

In this modification, by performing the view angle changing process or the size changing process, it is possible to improve the visibility of the player character even in a game where the ratio of the player's height to the field size is relatively small.

[Modification 2]
In each embodiment, an example has been described in which the changing unit 112 and the changing unit 112A continuously change the angle of view or the size of the player character V2 in the virtual space. However, the present invention is not limited to this, and the changing unit 112 and the changing unit 112A may change the angle of view or the size of the player character V2 in the virtual space in stages. For example, when the distance L is larger than the threshold L1, the changing unit 112 applies the angle of view r1 acquired from the AR control unit 114, and when the distance L is less than or equal to the threshold L1, the changing unit 112 applies the angle of view r4 (r4 <r1) may be applied. Further, for example, the changing unit 112A applies a magnification n1=1 to the predetermined size of the player character when the distance L is greater than the threshold L1, and applies a magnification n1=1 when the distance L is less than or equal to the threshold L1. Alternatively, a magnification n2 (n2>n1) may be applied.

[Modification 3]
In each embodiment, an example has been described in which the changing unit 112 and the changing unit 112A perform a process of narrowing the angle of view of the virtual camera or a process of changing the size as the virtual camera is closer to the field area F. However, the changing unit 112 and the changing unit 112A may perform a process of narrowing the angle of view or a size change process so that the virtual camera is outside a predetermined area including a virtual stadium where the player character competes in the virtual space. It may not be executed if it is inside the file, but it may be executed if it is inside.

Here, the predetermined area may be a plane area including the field area F. Specifically, such a predetermined region may be a rectangular region obtained by expanding the four sides of the field region F by a predetermined margin, or may be a substantially elliptical region including the field region F.

Further, the predetermined area may be a three-dimensional spatial area whose bottom surface is a plane including the field area F. Specifically, such a predetermined region may be a substantially hemispherical spatial region including the field region F on the bottom surface, or may be a substantially rectangular parallelepiped spatial region containing the field region F on the bottom surface. .

In this modification, the display size of the player character V2 becomes larger than the size of the information processing device 10 (that is, the camera 14) brought closer to the virtual camera only when the virtual camera is located inside the predetermined area. Furthermore, when the virtual camera is located outside the predetermined area, the player character V2 is displayed at a display size commensurate with the distance. Therefore, changing the display size becomes more natural for the user.

[Other variations]
In each embodiment, an example has been described in which the camera 14 included in the information processing device 10 includes a single focus lens. The embodiments are not limited to this, and each embodiment can be modified so that the camera 14 includes a zoom lens. In such a configuration, the angle of view of the camera 14 changes. In this case, the AR control unit 114 sets the angle of view of the virtual camera in conjunction with changes in the angle of view of the camera 14. Note that even in this case, the changing unit 112 in the first embodiment acquires the viewing angle of the virtual camera set by the AR control unit 114 in conjunction with a change in the viewing angle of the camera 14, and changes the acquired viewing angle. do it.

Furthermore, in the first embodiment, it has been described that the positional relationship between the real space and the virtual space is temporarily not maintained due to the different viewing angles of the camera 14 and the virtual camera. However, the first embodiment can be modified so that the angle of view of the camera 14 is changed in conjunction with the change of the angle of view of the virtual camera. Thereby, the positional relationship between the real space and the virtual space is maintained. That is, in this modification, the changing unit 112 executes the view angle changing process so that the closer the virtual camera is to the field area F, the narrower the view angle of the virtual camera is, and also changes the view angle of the camera 14 to the changed virtual camera. Change the value to the same value as the angle of view. Note that in this case, the information processing device 10 is assumed to have a view angle control function that controls the view angle of the camera 14 without relying on user operations. If the camera 14 is equipped with a zoom lens, the angle of view control function controls the camera 14 to change the angle of view of the zoom lens. Further, when the camera 14 is equipped with a single focus lens, the angle of view control function executes a process of generating a captured image in which the angle of view of the camera 14 is changed in a pseudo manner.

Furthermore, in each embodiment, the display unit 113 can be transformed to superimpose a virtual image on a real image that has been processed to be unclear. As a result, the visual field image of the virtual reality space displayed on the display device 17 becomes an image in which the real image that is the background of the virtual image is blurred. As a result, in the first embodiment, it is possible to further reduce the discomfort that the user feels from the combined visual field image due to the difference in the viewing angle between the virtual image and the real image. Furthermore, in the second embodiment, it is possible to reduce the discomfort that the user feels from the visual field image in which the size of the player character is enlarged.

Furthermore, in each embodiment, an example has been described in which the arrangement unit 111 arranges a plurality of player characters V2 in the virtual space. However, the number of player characters V2 to be placed is not limited to a plurality, but may be one, depending on the competition.

〔summary〕
From the embodiments exemplified above, the following configurations can be understood, for example. Note that in order to facilitate understanding of each aspect, reference numerals in the drawings will be added in parentheses for convenience below, but this is not intended to limit the present invention to the illustrated aspects.

A game program according to one aspect of the present invention provides a computer that includes an imaging device (14) and a display device (17) with a virtual machine whose positional relationship with real space is defined, in order to realize a game simulating a competition. a placement step (S112) of placing the player character (V2) in a virtual space in which a virtual camera is placed at a position in the virtual space that corresponds to a position of the imaging device (14) in the real space; ), a changing step (S120) of changing the angle of view of the virtual camera according to the movement of the imaging device (14) in the real space, and a step of changing the angle of view of the virtual camera (S120); , a display step (S122) in which the real space is superimposed on the real image captured by the imaging device (14) and displayed on the display device (17), and in the changing step (S120), the The closer the virtual camera is to the area where the player character (V2) is placed, the narrower the angle of view of the virtual camera is.

Here, when the user wants to increase the display size of the player character, the user moves the imaging device so that the virtual camera approaches the player character. In the above configuration, the player character is automatically zoomed in response to such a user operation (hereinafter also referred to as an operation of bringing the imaging device closer, etc.). As a result, the display size of the player character becomes larger than the size of the player character brought closer to the player character, so that the visibility of the player character improves.

In particular, in the case of games that imitate sports such as soccer, where the ratio of player size to stadium size is small, the above configuration is effective because a display size that only increases as the players get closer is often insufficient in terms of visibility. It is. Furthermore, since the user performs an operation of bringing the imaging device closer to the player character in order to make the display size of the player character as large as possible, it does not feel strange even if the player character is automatically zoomed in conjunction with the bringing closer operation.

The above-mentioned game program includes an acquisition step for the computer to acquire an angle of view of the virtual camera for superimposing the virtual image on the real image so as to match the positional relationship between the real space and the virtual space. Preferably, step S116) is further executed, and the changing step (S120) changes the angle of view acquired in the acquiring step (S116).

With the above configuration, when a computer executes the game program, the known angle of view of the virtual camera for superimposing the virtual image on the real image is set to match the positional relationship between the real space and the virtual space. technology can be used. As a result, the portability and reusability of the game program can be improved.

In the game program described above, the changing step (S120) narrows the angle of view of the virtual camera as the distance between the virtual camera and an intersection point where a straight line extending from the virtual camera in the imaging direction intersects with the area is smaller. , is preferable.

With the above configuration, by referring to the distance between the virtual camera and the above-mentioned intersection point, it is possible to realize a game that produces the above-mentioned effects.

In the game program described above, it is preferable that the changing step (S120) does not execute the process of narrowing the angle of view when the distance is greater than a threshold value, but executes it when the distance is equal to or less than the threshold value.

With the above configuration, the display size of the player character will only increase when the imaging device is brought closer to the area where the player character is placed, and only when the imaging device is closer to the area where the player character is placed than the threshold; If there is, it will be displayed at a display size commensurate with the distance. Therefore, changing the display size becomes more natural for the user.

In the game program described above, the changing step (S120) narrows the angle of view when the virtual camera is set to a predetermined field including a virtual stadium where the athlete character (V2) competes in the virtual space. It is preferable to not execute it if it is outside the area, but to execute it if it is inside it.

With the above configuration, the display size of the player character becomes larger than when the imaging device is brought closer only when the virtual camera is inside the predetermined area, and when the virtual camera is outside the area, it is displayed at a display size commensurate with the distance. be done. Therefore, changing the display size becomes more natural for the user.

In the game program described above, it is preferable that the changing step (S120) continuously changes the angle of view as the virtual camera approaches the area.

With the above configuration, the user can display the player character at a desired display size by adjusting the degree to which the imaging device is brought closer.

In the game program described above, it is preferable that the changing step (S120) increases the rate of change of the angle of view as the virtual camera approaches the area.

With the above configuration, the closer the user brings the imaging device to the player character, the more rapidly the display size of the player character can be increased.

In a game program according to another aspect of the present invention, a positional relationship with real space is defined in a computer including an imaging device (14) and a display device (17) in order to realize a game simulating a competition. a placement step of placing a player character (V2) in a virtual space in which a virtual camera is placed at a position in the virtual space that corresponds to a position of the imaging device (14) in the real space; (S112), a changing step (S120) of changing the size of the player character (V2) in the virtual space according to the movement of the imaging device (14) in the real space; a display step (S122) of superimposing a virtual image photographed by the camera on the real space image taken by the imaging device (14) and displaying the same on the display device (17); In the changing step (S120), the closer the virtual camera is to the area where the player character (V2) is placed, the larger the size of the player character (V2) in the virtual space is increased.

With the above configuration, as the user moves the imaging device closer to the player character, the player character is automatically enlarged. As a result, the display size of the player character can be made larger than the size of the player character, which improves the visibility of the player character.

An information processing device according to one aspect of the present invention includes an imaging device (14) and a display device (17) for realizing a game simulating a competition, and the information processing device has a positional relationship with real space. A player character (V2) is placed in a virtual space in which a virtual camera is placed at a position in the virtual space that corresponds to a position of the imaging device (14) in the real space. a changing unit that changes the angle of view of the virtual camera according to the movement of the imaging device (14) in the real space; a display section for displaying the real space on the display device (17) superimposed on a real image captured by the imaging device (14); The closer the virtual camera is to the area, the narrower the angle of view of the virtual camera.

The above configuration provides the same effects as the game program described above.

A method according to one aspect of the present invention is such that a computer including an imaging device (14) and a display device (17) uses a virtual space whose positional relationship with the real space is defined in order to realize a game simulating a competition. a placement step (S112) of placing a player character (V2) in a virtual space in which a virtual camera is placed at a position in the virtual space that corresponds to a position of the imaging device (14) in the real space; and a changing step (S120) of changing the angle of view of the virtual camera according to the movement of the imaging device (14) in the real space, and a virtual image of the virtual space taken by the virtual camera. a display step (S122) in which the real space is superimposed on a real image captured by the imaging device (14) and displayed on the display device (17), and the changing step (S120) includes The closer the virtual camera is to the area where the character (V2) is placed, the narrower the angle of view of the virtual camera is.

The above configuration provides the same effects as the game program described above.

[Example of implementation using software or hardware]
In the embodiment and each modified example described above, an example has been described in which the control unit 110 of the information processing device 10 is implemented by software. That is, a program executed by a computer to achieve the object of the present invention is stored in the auxiliary memory 13 of the computer shown in FIG. A control unit 110 is realized.

In this case, the auxiliary memory 13 for storing the program may include "non-temporary tangible media" such as ROM (Read Only Memory), as well as tapes, disks, cards, semiconductor memories, and programmable logic circuits. etc. can be used.

Furthermore, the program may be supplied to the computer via any transmission medium (communication network, broadcast waves, etc.) that can transmit the program. Further, one aspect of the present invention can also be realized in the form of a data signal embedded in a carrier wave, in which the program is embodied by electronic transmission.

Note that the control unit 110 of the information processing device 10 is not limited to implementation by software, and may be implemented by a logic circuit (hardware) formed on an integrated circuit (IC chip) or the like.

The present invention is not limited to the embodiments described above, and various modifications can be made within the scope of the claims, and embodiments obtained by appropriately combining technical means disclosed in different embodiments. are also included within the technical scope of the present invention.

10, 10A information processing device 11 processor 12 main memory 13 auxiliary memory 14 camera 15 touch panel 16 position sensor 17 display device 18 input device 110 control section 111 arrangement section 112, 112A changing section 113 display section 114 AR control section 115 game progress section

Claims (1)

In order to realize a game that simulates a competition, a computer including an imaging device and a display device,
A player character is placed in a virtual space that has a defined positional relationship with the real space, and in which a virtual camera is placed at a position in the virtual space that corresponds to a position of the imaging device in the real space. a placement step to
a changing step of changing the angle of view of the virtual camera according to the movement of the imaging device in the real space;
performing a display step of superimposing a virtual image of the virtual space taken by the virtual camera on the real image of the real space taken by the imaging device and displaying the same on the display device;
In the changing step, the angle of view of the virtual camera is narrowed as the virtual camera is closer to the area where the player character is placed.

Images