JPH11197358A - Game device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To obtain a game screen which is easy to see for a player by judging whether or not an object exists within a specific area in virtual space, and by adjusting the angle of a virtual camera. SOLUTION: From an object table one datum on a line polygon is read, and a present position in the world coordinate system (X-Z plane) of a camera and an angle ϕ in the direction of the apex Pn of the line polygon seen from the position of the camera are read, (n=1-4). Next, the apex Pn of the line polygon and the camera angle ϕn are compared, and the apex of the rear edge of the line and the apex of its front edge are discriminated. And, in the case the apex Pn is at the rear edge of a line object and a distance to the apex Pn is, for example, 10 m or more, a specific value is added to a value in the y-axis direction (height direction) of the coordinate data of the apex Pn of the rear edge of the line, thereby raising the rear edge of the line polygon from ground.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a game device, and more particularly to, for example, improving a game screen display in a game device.

[0002]

2. Description of the Related Art In a so-called video game device, an input device is operated while watching a screen to control the movement of an object, thereby causing a game to proceed. In a game device of 3D (three-dimensional) display, a virtual space is formed in a computer system, and game objects are arranged in this virtual space. Then, the computer controls the movement of the object according to the game rules. Further, the game is developed by controlling the main object in accordance with the operation of the player. The development of this game is displayed on a monitor screen through a virtual camera arranged in a virtual space.

[0003]

However, when displaying a game developed in a 3D game space on a screen,
The ease of playing the game differs depending on the direction in which the camera looks at the object. Further, the ease of playing the game varies depending on the position of the camera. It is also desirable that the three-dimensional expression of the object be emphasized according to the area of the game.

When displaying a game in a virtual 3D space on a screen, it is necessary to display the game field as wide as possible on the screen by keeping the viewpoint away from the player in order to make it easier for the player to play the game. Is desired. When such processing is performed, the width of the line indicating the court of the sports game is narrower than the entire virtual space, so that the line may disappear in relation to the screen resolution. On the other hand, in order to prevent this disappearance, if a thick line is prepared in advance, a special thick line will be displayed when zooming up (approaching the viewpoint closer to the gazing point) to increase the power of the game. It is unnatural.

Therefore, an object of the present invention is to provide a game screen which is easy for a player to see.

It is another object of the present invention to provide a game apparatus which provides a player with a more preferable appearance in an area of a game field according to the area.

[0007]

In order to achieve the above object, a game device according to the present invention arranges an object in a virtual space formed in a computer system, and performs an input operation and the processing of the object according to a predetermined rule. In a game device which unfolds a game while controlling movement and displays a state in the virtual space as a screen viewed from a virtual camera, it is determined whether or not the object exists in a specific area in the virtual space. Determining means;
Camera angle adjusting means for adjusting the angle of the virtual camera based on the determination result.

[0008] Preferably, the camera angle adjusting means includes:
The angle of the virtual camera is adjusted based on the determination result and the moving direction of the object.

Preferably, the camera angle adjusting means includes:
The angle of the virtual camera is adjusted in at least one of the horizontal direction and the vertical direction in the virtual space.

Further, the game device of the present invention arranges an object in a virtual space formed in a computer system, develops a game while controlling the movement of the object in accordance with a rule determined as an input operation, and develops the game. A game device that displays a state in a space as a screen viewed from a virtual camera, a determining unit that determines whether the object exists in a specific area in the virtual space, and the virtual device based on the determination result. And a zoom adjustment unit for adjusting a field of view of the camera.

Further, the game device of the present invention generates a two-dimensional image of a virtual space formed by a three-dimensional shape model composed of a plurality of polygons as viewed from an arbitrary viewpoint, and displays the generated two-dimensional image on a display device. An angle calculating means for calculating an angle between a line segment connecting the viewpoint and the gazing point, and a normal to a predetermined polygon arranged in the virtual space; and the angle calculating means. And a polygon inclining means for changing the coordinate values of the vertices of the polygon so that the calculated angle becomes a predetermined value.

[0012]

FIG. 1 is an external view of a video game machine using an image processing apparatus according to an embodiment of the present invention. In this figure, a video game machine main body 1 has a substantially box shape, and a substrate for game processing and the like are provided therein. Also, two connectors 2a are provided on the front of the video game machine main body 1, and these connectors 2a are provided.
Is connected to a game operation PAD 2b via a cable 2c. When two players enjoy the game, two PADs 2b are used.

In the upper part of the main body 1 of the video game machine, a ROM
Cartridge I / F1a for connecting cartridge, CD-
A CD-ROM drive 1b for reading ROM is provided. Although not shown, a video output terminal and an audio output terminal are provided on the rear surface of the video game machine main body 1. This video output terminal is cable 4a
Is connected to the video input terminal of the TV receiver 5 via the
It is connected to the audio input terminal of the V receiver 5. In such a video game machine, if the user
By operating the, the user can play the game while watching the screen displayed on the TV receiver 5.

FIG. 2 is a block diagram showing an outline of the TV game machine according to the present embodiment. This image processing apparatus includes a CPU block 10 for controlling the entire apparatus, a video block 11 for controlling display of a game screen, a sound block 12 for generating sound effects, a subsystem 13 for reading a CD-ROM, and the like. Have been.

The CPU block 10 includes an SCU (System C
ontrol Unit) 100, main CPU 101, RAM1
02, ROM 103, cartridge I / F1a, sub C
It comprises a PU 104, a CPU bus 103 and the like. The main CPU 101 controls the entire apparatus. The main CPU 101 has a DSP (Di-
gital Signal Processor), and can execute application software at high speed. RAM
102 is used as a work area of the main CPU 101. In the ROM 103, an initial program for initialization processing and the like are written. SCU
100 controls the buses 105, 106, 107 so that the main CPU 101, VDPs 120, 130,
Data input / output between the DSP 140, the CPU 141, and the like is performed smoothly. Also, the SCU 100 has a DMA controller inside, and can transfer sprite data during a game to the VRAM in the video block 11. This makes it possible to execute application software such as a game at high speed. The cartridge I / F 1a is for inputting application software supplied in the form of a ROM cartridge.

The sub CPU 104 is an SMPC (System M
This is called an anager & peripheral control, and has a function of collecting peripheral data from the PAD 2b via the connector 2a in response to a request from the main CPU 101. Main CPU 101 is sub CPU 1
The processing is performed based on the peripheral data received from the device 04. An arbitrary peripheral among a PAD, a joystick, a keyboard and the like can be connected to the connector 2a. The sub CPU 104 includes the connector 2a
It has a function of automatically recognizing the type of peripheral connected to the (main body side terminal) and collecting peripheral data and the like according to a communication method according to the type of peripheral.

A video block 11 is a VDP for drawing a character or the like composed of polygon data of a video game.
(Video Display Processor) 120, and a VDP 130 that performs drawing of a background screen, synthesis of polygon image data and a background image, clipping processing, and the like. VD
P120 is a VRAM 121 and a frame buffer 12
2, 123. The rendering data of the polygons representing the characters of the video game machine is stored in the main CPU 101.
Is sent to the VDP 120 via the SCU 100 from the
AM 121 is written. The drawing data written in the VRAM 121 is, for example, 16 or 8 bits / pixe.
l or drawing frame buffer 122 or 12
3 is drawn. The drawn data of the frame buffer 122 or 123 is sent to the VDP 130. Information for controlling drawing is transmitted from the main CPU 101 to the SCU 100.
To the VDP 120 via And VDP1
20 executes the drawing process according to this instruction.

The VDP 130 is connected to the VRAM 131, and the image data output from the VDP 130
It is configured to be output to the encoder 160 via the P. 32. The encoder 160 generates a video signal by adding a synchronization signal or the like to the image data, and outputs the video signal to the TV receiver 5. As a result, a game screen is displayed on the TV receiver 5.

The sound block 12 comprises a DSP 140 for performing voice synthesis according to the PCM system or the FM system, and a CPU 141 for controlling the DSP 140 and the like. The audio data generated by the DSP 140 is converted to a two-channel signal by the D / A converter 170 and then output to the speaker 5b.

The subsystem 13 includes a CD-ROM drive 1b, a CD I / F 180, a CPU 181, an MPEG
AUDIO 182, MPEG VIDEO 183 and the like. This subsystem 13 includes a CD-
It has a function of reading application software supplied in the form of a ROM, reproducing a moving image, and the like. CD-
The ROM drive 1b reads data from a CD-ROM. The CPU 181 controls the CD-ROM drive 1b, and performs processing such as error correction of the read data. The data read from the CD-ROM is supplied to the main CPU 101 via the CD I / F 180, the bus 106, and the SCU 100, and is used as application software. In addition, MPEG AUDI
O182 and MPEG VIDEO 183 are devices for restoring data compressed according to the MPEG standard (Motion Picture Expert Group). These MPEG
By using the AUDIO 182 and the MPEG VIDEO 183 to restore the MPEG compressed data written on the CD-ROM, it is possible to reproduce a moving image.

FIG. 3 is an explanatory diagram for explaining a case where a soccer game is played as an example of a game in a 3D virtual game space formed in the computer system.

In FIG. 1, a soccer court is formed on the xz plane of the 3D virtual space. The longitudinal direction (left-right direction) of the court is the x-axis direction, and the short direction (depth direction) of the coat
Is defined in the y-axis direction, and the height direction is defined in the z-axis direction. An object of each player (not shown) is arranged on the court, and the player controls the movement of the main player using the input device. Line objects are drawn on the ground to form a soccer court. In this virtual game space, a virtual camera (viewpoint) for performing coordinate conversion and the like in the field of view and displaying the image on a two-dimensional monitor screen is arranged, and the game is relayed.

FIGS. 4 and 5 are explanatory diagrams for explaining the focus of the present invention. In FIG. 4, line objects are arranged on the ground by a combination of polygons for forming lines (hereinafter, referred to as line polygons), and a drawn soccer court as shown in FIG. 3 is formed. You. This line is well displayed on the screen when the camera position in the game space is at an angle looking down from above, but the line occupying the screen as the vertical angle (y-axis direction) of the camera approaches the horizontal direction. Area decreases and gradually disappears from the monitor screen. In addition, even when the line polygon and the camera face each other, that is, when the normal vector of the line polygon and the line of sight of the camera are parallel, if the viewpoint position is sufficiently far away, On a two-dimensional projection screen obtained by performing coordinate transformation on a three-dimensional virtual space, line polygons may be too thin to be displayed. This is inconvenient for a game that is premised on playing the game on a line (or court).

Therefore, in the first invention, the position coordinates of some of the vertices of the line polygon are changed so that the area reflected by the camera increases under the condition that the line is not easily reflected on the monitor screen. That is, as shown in FIG. 5, a line polygon positioned on the ground in a relative position with respect to the camera is slightly raised in height relative to the vertex positioned in the depth direction when viewed from the camera, as shown in FIG. -Increase the area of the polygon.

FIG. 6 is a flowchart illustrating an algorithm for performing such processing.

First, when a line polygon (or a line object) exists in the field of view of a camera for observing each object arranged in the virtual game space, a corresponding flag is set by a program (not shown). If this is determined in the main program (not shown), a line loss prevention process is executed (S102,
Yes).

First, it is determined whether the vertex of the line polygon is located at the back or front as viewed from the camera.
As shown in FIG. 7, there is a method in which the distances l1 and l2 between the camera and the vertex P1 and between the camera and the vertex P3 are calculated, and the depth of the vertex is determined based on the magnitude of the distance.

Also, as shown in FIG. 8, by comparing the angles θ1 and θ3 of the vertices P1 and P3 with the angles φ1 and φ3 of the camera,
There is a method of determining the depth / front of the vertices P1 and P3. Either of these methods can be used in the present embodiment, but the latter method has an advantage that the amount of calculation in hardware is smaller than the former method.

Therefore, steps 104 to 1 described below are performed.
The determination of the depth and the front of the vertices of the ten line polygons will be described using the latter method of comparing the angles.

One line / polygon data is read from an object table (not shown) representing an object group arranged in the scene (S104). FIG.
Shows an example of data of a line polygon. In the data of each vertex P1 to P4 of the polygon, for example, in addition to the coordinate value (xn, zn) of the world coordinate system, the determination of the depth before the vertex is performed in advance. Angle values and the like determined for use are associated with each other.

Next, as shown in FIG. 8, the current position of the camera in the world coordinate system (xz plane) and the angle φn in the direction of the vertex Pn of the line polygon viewed from the camera position are read. Angle φn is the vertex P of the line polygon
It can be obtained from the coordinates of n and the coordinates of the camera position by a trigonometric function (S106).

Next, the vertex of the line polygon is compared with the camera angle (S108). For example, in FIG. 8, it is assumed that the angle preset at the vertex P1 is 90 degrees, and the angle preset at the vertex P3 is 270 degrees.
When the angle φ1 of the line-of-sight vector connecting the camera and the vertex P1 from the x-axis is 120 degrees, 120 degrees−90 degrees = 30
Degree <90 degrees (where 90 degrees is the discrimination reference value in this case)
(S108), it is determined as the vertex of the deep edge of the line (S110).

When the angle φ3 from the x-axis of the line-of-sight vector connecting the camera and the vertex P3 is 150 degrees,
0 degrees-270 degrees = ABS (-120 degrees)> 90 degrees (where 90 degrees is a discrimination reference value used in this case, ABS
Is an absolute value) (S108), it is determined as the vertex of the edge before the line (S110).

When the vertex Pn is the edge in front of the line object, the height of the vertex Pn is not adjusted, and the data of the next vertex of the line polygon is read (S110, No).

When the vertex Pn is the edge in front of the line object (S110, Yes), it is determined whether or not the distance to the vertex Pn is 10 m or less. When the distance is 10 m or less (S112, Yes), that is, when the camera is close to the line, the line is normally reflected on the screen. Therefore, the height of the vertex Pn is not adjusted, and the next line is not adjusted. The data of the vertices of the polygon is read (S112, No).

When the distance to the vertex Pn is 10 m or more (S112, No), that is, when the camera is normally away from the line, the line is hard to be seen. The value in the y-axis direction (height direction) of the coordinate data of the vertex Pn is increased by a predetermined value, and the back edge of the line polygon is raised from the ground (S
114). Such processing is performed for each vertex of all the lines and polygons on the screen (S116).

As a result, the edge on the far side of the line object arranged in the virtual game space rises as shown in FIG. 5 and becomes visible from the camera.

Next, an embodiment of the second invention will be described. A second invention divides a game field (soccer ground) into predetermined areas, determines an area where a ball is located, and adjusts a camera angle so that a traveling direction of the ball (a direction the player wants to see) can be seen well. It is.

FIGS. 10 to 12 illustrate the moving direction of the player and the preferred direction of the camera when moving in that direction.

First, as shown in FIG. 3, the camera basically moves along the side line and faces the player.
Of course, the camera can enter the field and follow the game.

When the player controlled by the player moves in the forward direction (z-axis direction) on the xy plane (FIG. 10)
(A)), and the camera is turned in the z-axis direction ((b) in the figure).

When the player controlled by the player moves to the left (−x-axis direction) on the xy plane (FIG. 11).
(A)), the camera is set at a predetermined angle from the z-axis direction, for example,-
The screen display of the area in the ball advancing direction is increased toward 15 degrees ((b) in the same figure). Here, the clockwise direction is defined as a positive direction, and the counterclockwise direction is defined as a negative direction.

When the player controlled by the player moves rightward (x-axis direction) on the xy plane (FIG. 12A),
Set the camera at a predetermined angle from the z-axis direction, for example,
The screen display of the area in the ball advancing direction is increased for 5 degrees ((b) in the same figure).

An example of determining the viewpoint direction of the camera by combining the adjustment of the camera angle and the area of the game field will be described with reference to the flowcharts of FIGS.

First, at a predetermined timing (condition) determined in a main program (not shown), this routine of adjusting the left and right angles of the camera is executed to determine whether the gazing point of the camera is on the player side or on the ball side. Yes (S13
2).

When the player is on the player side (S132, player), it is determined whether or not the point of regard is within a predetermined distance, for example, 8 m, from the penalty area of the soccer court (S13).
4). When the distance is within 8 m (S134, Yes), enemy and teammates gather near the penalty area to increase the chances of passing and shooting (FIG. 15). Therefore, the camera is set so that the situation near the penalty area can be seen well. It is inclined about -15 degrees with respect to the axis (S136, FIG. 16).

When the player is more than 8 m away from the penalty area (S134, No), the traveling direction of the player is determined (S138). When the player moves forward (FIG. 17) and moves backward (FIG. 18), x
The angle of the camera with respect to the player on the −z plane is set to 0 degree (S140, FIG. 19). When the player moves leftward (FIG. 20), the angle of the camera with respect to the player is set to an angle in the direction of −15 degrees from the z axis (S1).
42, FIG. 21). When the player moves rightward (FIG. 22), the angle of the camera with respect to the player is 1 from the z axis.
An angle in the direction of 5 degrees is set (S144, FIG. 2
3).

Next, when the position of the gazing point of the camera is on the ball (S132, ball), it is determined whether the distance between the ball and the player is a predetermined distance, for example, 15 m or more (S146). When it is more than 15m away (S1
46, Yes, FIG. 24), the camera angle is determined so that the line of sight vector from the ball to the player is at an angle of 20 degrees from the z-axis (S154, FIG. 25). When the position of the player and the ball is reversed with respect to the z-axis, the line-of-sight vector from the ball to the player is -20 from the z-axis.
The angle of the camera is determined so that the angle is in degrees (S15
4, FIG. 26).

When the distance between the ball and the player is a predetermined distance,
For example, when it is not more than 15 m (S146, No)
It is determined whether the point of gaze of the camera is within 8 m from the penalty area (S148). When the gazing point of the camera is within 8 m from the penalty area (S148, Y
es, FIG. 27), and set the line-of-sight vector of the camera at an angle of −15 degrees with respect to the z-axis (FIG. 28). As shown in FIG. 26, when the positions of the ball and the player are opposite,
The direction of the camera is set to a direction at 15 degrees from the z-axis.

Further, the distance between the ball and the player is 15 m
If the camera's gazing point is not within 8 m of the penalty area (S148, No, FIG. 29), the line of sight of the camera is set to an angle of 0 degree with respect to the ball (0 degree with respect to the z axis). Set (FIG. 30). After these processes, the process returns to the main program.

When the camera moves along the side line, if the angle of the camera from the z-axis direction is too large, the player can move the player in the x and z directions using an input device such as a pad or a joystick. If you enter
In some cases, it is difficult to operate the game because it does not directly correspond to the movement direction of the player on the screen. Therefore, an angle of about 15 degrees is good.

In this way, the camera angle on the xz plane is adjusted according to the area of the game field of the player, so that the traveling direction of the ball can be seen well.

Next, the angle adjustment of the camera in the vertical direction (y-axis direction) will be described. FIG. 31 is a flowchart illustrating processing for adjusting the vertical angle of the camera, which is executed at a predetermined timing (predetermined condition) determined by a main program (not shown). Although the height position of the camera is not limited to this, it is usually set to a height of about 10 m. In this routine, as shown in FIG. 32, the angle at which this camera looks down on the game field is set according to the game area. That is, the position of the gazing point of the camera is determined (S162). When the gazing point is on the player (S162, player), it is determined whether the gazing point is near the penalty area (S16).
4). If the gazing point is not in the vicinity of the penalty area (S164, No), in order to show a relatively wide range, the direction of the camera is determined such that the line-of-sight vector of the camera is at a direction of -8 degrees from the z-axis direction. (S166). Here, when the camera is facing downward, it is represented as a negative angle, when it is upward, as a positive angle, and horizontally, as 0 degrees. When the point of interest is near the penalty area (S164, Ye
s) The orientation of the camera is determined so that the line-of-sight vector of the camera is -11 degrees from the z-axis direction (S168).
This allows the camera to look down more,
An image having a D-like three-dimensional (depth) feeling can be obtained.

When the gazing point is on the ball (S162, ball), it is determined whether or not the gazing point is near the penalty area (S170). If the gazing point is not in the vicinity of the penalty area (S170, No), the direction of the camera or the like is determined such that the line of sight vector of the camera is in a direction of −11 degrees from the z-axis direction (S166). When the point of gaze is near the penalty area (S170, Ye
s) The orientation of the camera is determined so that the line-of-sight vector of the camera is at −13 degrees from the z-axis direction (S174).

When these processes are completed, the process returns to the main program.

FIG. 33 is a flowchart for explaining the zoom adjustment of the camera. If it is determined in the main program that the zoom of the camera should be adjusted, the process proceeds to this routine.

First, it is determined whether the gazing point of the camera is near the penalty area (S182). If the camera is located near the penalty area, the camera is pulled away from the point of interest to a predetermined distance to perform zoom down (S184). As a result, the entire penalty area can be seen.

When the gazing point of the camera is not in the vicinity of the penalty area (S182, No) and the player is out of the screen (S186, Yes), zoom down is performed in order to show the player in the screen (S188). As shown in FIG. 34, the player exists on the screen (S186, N
o) If the player is within 3/4 of the screen (S190, Yes), zoom-up is performed by moving the camera so that the camera approaches a predetermined distance from the point of regard (S190). This makes it possible to close up the player while a certain range is visible. Also, the player is shown on the screen,
If the distance is not within 4 (S190, No), the distance between the camera and the gazing point is maintained (S194).

FIG. 35 is a flow chart for explaining another example in which an object such as the above-mentioned line polygon which should be prevented from disappearing from the screen can be displayed.

In the figure, attribute data indicating that the polygon is to be prevented from disappearing is attached to the data of the polygon to be prevented from being lost. When displaying a group of objects in the field of view of the virtual camera on the screen, the computer system determines whether or not there is a polygon to be prevented from disappearing in the field of view (S202).

If there is a polygon to be prevented from erasure, for example, a line polygon (S202, Yes), a polygon erasure prevention program is executed. That is, FIG.
As shown in FIG. 6, a unit line-of-sight vector is obtained from the gazing point of the camera and the camera position (S204). A unit normal vector is obtained from the data of the polygon whose loss is to be prevented (S2
06). An angle between the unit line-of-sight vector and the unit normal vector is obtained. This can be obtained as an inner product of the unit line-of-sight vector and the unit normal vector (S20).
8). The coordinate values of the vertices of the polygon are adjusted so that this angle becomes a predetermined angle (S210). The processing from step 204 to step 210 is performed for each polygon to be prevented from disappearing in the visual field. Here, step 202 corresponds to loss prevention executing means, steps 204 to 208 correspond to angle calculating means, and step 310 corresponds to polygon tilting means.

Even in this case, it is possible to prevent lines and the like indispensable for the game from disappearing.

The present invention is not limited to soccer games, but can be applied to various games such as tennis, baseball, basketball, volleyball, rugby, American football, etc., in which lines are drawn on the ground or court. In this way, the zoom of the camera is adjusted according to the area and the display state.

The program for realizing the game device and the method of displaying a screen as described above in a computer system includes an information recording medium such as a CD-ROM or a DVD-ROM.
It is provided by being recorded on a ROM, a ROM cassette, or the like.

[0065]

As described above, according to the game device of the present invention, in the 3D game, polygons that are difficult to see depending on the camera position are caused, so that, for example, lines drawn on the ground disappear. There is no problem.

According to the game device of the present invention, it is possible to obtain a game device in which the direction of the camera and the range of the visual field are adjusted in accordance with the game area and the moving direction of the object, so that the player can play the game. An easy screen is obtained.

[Brief description of the drawings]

FIG. 1 is an explanatory diagram showing an overall configuration example of a game device.

FIG. 2 is a block diagram illustrating a circuit configuration of the game device.

FIG. 3 is an explanatory diagram illustrating a virtual game space formed in the game device.

FIG. 4 is an explanatory diagram illustrating a camera position and how a line drawn on the ground looks.

FIG. 5 is an explanatory diagram illustrating a process of raising a vertex of a back edge of a line polygon to make a line visible.

FIG. 6 is a flowchart illustrating a line loss prevention process.

FIG. 7 is an explanatory diagram illustrating a positional relationship between a vertex of a line polygon and a camera.

FIG. 8 is an explanatory diagram illustrating a positional relationship between a vertex of a line polygon and a camera.

FIG. 9 is an explanatory diagram illustrating an example of data of a vertex of a line polygon.

FIG. 10A is an explanatory diagram illustrating movement of a player in the back and front directions. FIG. 2B is an explanatory diagram for explaining the direction of the line-of-sight vector of the camera at that time.

FIG. 11A is an explanatory diagram illustrating movement of a player to the left. FIG. 2B is an explanatory diagram for explaining the direction of the line-of-sight vector of the camera at that time.

FIG. 12A is an explanatory diagram for explaining movement of a player to the right. FIG. 2B is an explanatory diagram for explaining the direction of the line-of-sight vector of the camera at that time.

FIG. 13 is a flowchart illustrating an angle adjustment process of the camera in the left-right direction.

FIG. 14 is a continuation of the flowchart for explaining the angle adjustment processing of the camera in the left-right direction.

FIG. 15 is an explanatory diagram illustrating a case where a point of interest of a camera is at a player.

FIG. 16 is an explanatory diagram illustrating an example of camera angle adjustment when the point of gaze is within 8 m from the penalty area.

FIG. 17 is an explanatory diagram illustrating a case where a player's traveling direction is a forward direction.

FIG. 18 is an explanatory diagram illustrating a case where the traveling direction of the player is a depth direction.

FIG. 19 is a diagram illustrating an example of a direction of a line-of-sight vector of a camera when a traveling direction of a player is a back / front direction.

FIG. 20 is an explanatory diagram illustrating an example in which a player moves to the left.

FIG. 21 is an explanatory diagram illustrating angle adjustment of a camera when a player moves to the left.

FIG. 22 is an explanatory diagram illustrating an example in which a player moves rightward.

FIG. 23 is an explanatory diagram illustrating angle adjustment of a camera when a player moves rightward.

FIG. 24 is an explanatory diagram illustrating an example in which a gazing point of a camera is at a ball.

FIG. 25 is an explanatory diagram illustrating an example of an adjustment angle of a camera when a ball and a player are separated by 15 m or more.

FIG. 26 is an explanatory diagram illustrating another example of the adjustment angle of the camera when the ball and the player are separated by 15 m or more.

FIG. 27: The point of gaze of the camera is 8 m from the penalty area
FIG. 7 is an explanatory diagram for explaining a case within the range.

FIG. 28: The point of gaze of the camera is 8 m from the penalty area
FIG. 7 is an explanatory diagram for explaining an angle adjustment of a camera when the angle is within the range.

FIG. 29 is an explanatory diagram illustrating a case where the point of regard is not within 8 m of the penalty area.

FIG. 30 is an explanatory diagram for explaining camera angle adjustment when the point of gaze is not within 8 m of the penalty area.

FIG. 31 is a flowchart illustrating adjustment of a vertical angle of a camera.

FIG. 32 is an explanatory diagram illustrating adjustment of a vertical angle of a camera.

FIG. 33 is a flowchart illustrating zoom adjustment of a camera.

FIG. 34 is an explanatory diagram illustrating an area where a player exists on the screen.

FIG. 35 is a flowchart illustrating another example of object disappearance prevention.

FIG. 36 is an explanatory diagram illustrating prevention of object disappearance.

[Explanation of symbols]

 10 CPU block 11 Video block 12 Sound block 13 Subsystem

Claims (5)

[Claims] An object is placed in a virtual space formed in a computer system, a game is developed while controlling the movement of the object according to an input operation and a predetermined rule, and a state in the virtual space is displayed by a virtual camera. A game device for displaying as a screen viewed from a computer, comprising: a determination unit configured to determine whether the object exists in a specific area in the virtual space; and adjusting an angle of the virtual camera based on the determination result. And a camera angle adjusting means. 2. The game device according to claim 1, wherein the camera angle adjusting means adjusts the angle of the virtual camera based on the determination result and a moving direction of the object. 3. The camera according to claim 1, wherein the camera angle adjustment unit adjusts the angle of the virtual camera in at least one of a horizontal direction and a vertical direction in the virtual space. Game equipment. 4. An object is placed in a virtual space formed in a computer system, a game is developed while controlling the movement of the object according to an input operation and a predetermined rule, and a state in the virtual space is displayed by a virtual camera. A game device for displaying as a screen viewed from a computer, comprising: a determination unit configured to determine whether the object exists in a specific area in the virtual space; and adjusting a visual field range of the virtual camera based on the determination result. A game device comprising: 5. A game device having image generation and display means for generating a two-dimensional image of a virtual space formed by a three-dimensional shape model composed of a plurality of polygons as viewed from an arbitrary viewpoint and displaying the generated two-dimensional image on a display device. An angle calculating means for calculating an angle formed by a line segment connecting the viewpoint and the gazing point, and a normal to a predetermined polygon disposed in the virtual space; and an angle calculated by the angle calculating means. And a polygon inclining means for changing a coordinate value of a vertex of the polygon so as to have a predetermined value.