JP2000157738A - Game device, image creation, and storage medium storing image creating program - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a game device, or the like, capable of easily grasping locational relationship in virtual three-dimensional space without accompanying the movements of the line of sight of a player while reducing effects on a background image. SOLUTION: A reference point 301 is set as shown in Fig (a) to create a first display body 302 formed of a circle centering the reference point 301 and to create a second display body 303 in the same plane as the first display body 302. In addition, a mobile body 304 which is moved by the operation of a player is created on the second display body 303. Then, in the case that input from a controller is forward movement, the mobile body 304 is moved in a direction approaching the reference point 301 as shown by an arrow (1)' in Fig (b). Associated therewith, the size of the second display body 303 is changed to create the second display body 303 of changed size.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a game device for playing a game in a virtual space on a display screen, an image generation method, and a recording medium on which an image generation program is recorded.

[0002]

2. Description of the Related Art Conventionally, an image generation method and a game apparatus for setting a viewpoint in a virtual three-dimensional space on a display screen and generating a view image from the viewpoint are known. Such a game device is popular because it can generate an image as if the player were in a virtual space.

As a technique for enjoying such a three-dimensional space with more reality, as shown in FIG. 12A, a sense of perspective is provided from the front of the screen to the back of the screen, and objects 501 to 504 are provided on the back of the screen. In some cases, the object 505 is displayed in front of the screen while being displayed, and an image is generated as if the player were in front of the screen.

[0004] However, in the case of giving a sense of perspective from the front of the screen to the back of the screen, if the size of each of the displayed objects 501 to 505 is not grasped, the objects 501 to 504 on the back side are required. Also, the distance between the object and the object 505 on the near side cannot be grasped. This is because in perspective, the display size increases as the distance to the viewpoint increases. If there are two objects of different sizes in the space, the distance from the viewpoint is the same but the size of the two objects is the same. Is different, or it is the same size but the distance from the viewpoint is different, unless you understand the original size of the displayed object.

As a method of eliminating such confusion between the distance and the size from the viewpoint, the display method is changed in accordance with the distance from the viewpoint so that the objects 501 to 504 farther from the viewpoint have a blurred color. Technology (depth queuing)
Is generally used. However, with this technique alone, the confusion between the distance from the viewpoint and the size cannot be sufficiently resolved visually, and therefore, as shown in FIGS.
The technique shown in (D) has been used.

That is, in the technique shown in (B),
A plurality of vertical line indices 506 and horizontal line indices 50 become narrower in the depth direction of the screen (however, equal intervals in the virtual space).
7 is displayed, and only the similar horizontal line index 506 is displayed in the technique shown in FIG. Thereby, the player can feel the change in distance from the viewpoint by the sequential change in the interval between the vertical line index 506 and the horizontal line index 507 or the sequential change in the interval between the horizontal line indices 506, and can change the objects 501 to 5
The distance between the object 04 and the object 505 can be ascertained.

In the technique shown in (D), a sub-screen 509 is displayed at a corner of the main screen 508, and the main screen 508 is displayed.
Are displayed on the sub-screen 509 as a two-dimensional image of the three-dimensional image displayed from above as viewed from right above. Therefore, by playing the game while comparing the sub-screen 509 and the main screen 508, the player can grasp the positional relationship between the objects 501 to 505 in the virtual three-dimensional image displayed on the main screen 508. It becomes possible.

[0008]

However, in the techniques shown in the above (B) and (C), since a plurality of vertical line indicators 506 and horizontal line indicators 507 are displayed in an image, these lines are displayed. The indices 506 and 507 complicate the screen configuration, which hinders a smooth game operation of the player. In the game screen, an object 501 is displayed.
In some cases, a background image having an extremely detailed screen configuration is displayed to make the player feel the reality of the virtual space where .about.505 exists. However, the vertical line index 506 and the horizontal line index 5 are further displayed on the screen on which the background image is displayed.
When 07 is displayed, the screen configuration of the background image is affected by the line indices 506 and 507, and it becomes difficult to give the player the reality based on the background image.

On the other hand, the technique shown in (D) does not affect the image in the main screen 508, so that the screen configuration becomes complicated or the background image screen configuration becomes complicated. I will not do it. However, in order to grasp the positional relationship between the objects 501 to 505 on the main screen 508,
Since it is necessary to visually recognize on the sub-screen 509, the player plays the game on the main screen 508,
The player is forced to play the game while moving his / her gaze to the main screen 508 and the sub-screen 509. For this reason, the player cannot concentrate on the game, and an operation chance is deprived in an important scene in the game, so that it may not be possible to fully enjoy the interest of the game.

The present invention has been made in view of such a conventional problem, and has a small influence on a background image.
It is an object of the present invention to provide a game device, an image generation method, and a recording medium on which an image generation program is recorded, in which a positional relationship in a virtual three-dimensional space can be easily grasped without involving movement of a player's line of sight. Is what you do.

[0011]

According to a first aspect of the present invention, there is provided a game apparatus having a function of expressing the movement of a moving object, wherein the first and second game apparatuses share a reference point. Generating means for generating a second display, size changing means for changing the size of the second display according to the reference point and the distance of the moving object, and changing size of the size changing means. Scale changing means for changing the scale of the screen. Therefore, if the distance of the moving body to the reference point changes, the size of the second display changes and the scale of the screen changes accordingly. By focusing on the size of the second display body, it is possible to easily grasp the distance of the moving body to the reference point on the screen including the changed scale. Moreover, the distance can be grasped only by displaying the first and second display bodies on the screen, so that the space in which the moving body moves has little effect on the background image. In addition, since it is only necessary to display the moving body and the display body on the same screen, it is possible to visually recognize both of them with the same line of sight, and there is no movement of the line of sight.

In the game device according to the present invention, the scale changing means changes a position of a viewpoint for forming a screen according to a size change of the size changing means. Therefore, even if the second display body has a simple form including only the line, the change in the size can be clearly recognized by changing the position of the viewpoint. Therefore, it is possible to simplify the form of the second display body and further the first display body to easily grasp the distance of the moving body to the reference point while minimizing the influence on the background image and the like. Becomes possible.

[0013] In the game device according to the third aspect of the present invention, the generating means generates the first and second display bodies on the same plane. Therefore, when the second display body changes in size different from the first display body on the same plane, the change in the size of the second display body can be clearly recognized, and as a result, the moving body It is possible to clearly grasp the distance to the reference point.

Further, in the game apparatus according to the present invention, the generating means generates the first and second display bodies as similar shapes. That is, if both display bodies are similar in shape, a change in the size of the second display body can be clearly recognized by performing recognition while comparing the first display body and the second display body, As a result, the distance to the reference point of the moving object can be clearly grasped.

In the invention according to claim 5, the generation means generates the first and second display bodies as concentric circles centered on the reference point. Therefore, it is not only possible to clearly recognize the size of the second display body with respect to the first display body which is a concentric circle, and to clearly grasp the distance to the reference point of the moving body, but also to make the reference at this time. Since the point is the center of the first and second display bodies formed of concentric circles, the distance to the reference point of the moving body can be more clearly understood. Moreover, since both display bodies are circles in a very simple form, the influence on the background image is extremely small.

Further, in the game apparatus according to the present invention, the second display body is changed according to a size of the first display body and a distance between the moving body and the reference point. Comparing means for comparing the size of the second display body with the size of the first display body when the comparison means determines that the size of the second display body is larger than the size of the first display body. Change the size of the display body of 2. Therefore, only when the size of the second display body is larger than that of the first display body, the size changes according to the distance between the moving body and the reference point, and the size of the second display body becomes smaller than that of the first display body. Absent. At this time, if the size of the second display is too small, it is difficult to recognize a change in the size with the naked eye, so the size of the second display is limited by the size of the first display. Thus, the range of change in the size of the second display body is limited to an appropriate range that can be recognized by the naked eye. When the first and second display bodies are concentric circles, only the outer periphery of the first display body is observed, and the second display body is moved from the first display body to the outer periphery of the first display body. By recognizing whether or not the user is away from the vehicle, the distance to the reference point of the moving object can be grasped, and the grasp of the distance becomes easy.

Further, in the game device according to the invention of claim 7, the size changing means causes the second size to be changed.
If the size of the display body is not changed, the moving body that leads to the change of the size is not moved. Therefore, the moving limit of the moving object matches the minimum size limit of the second display object, and the second moving object is reliably moved to the moving limit of the moving object.
It is possible to grasp the distance to the reference point based on the change in the size of the display body.

Further, in the image generation method according to the present invention, a first step of generating a plurality of display objects sharing a reference point, and a step of obtaining a distance between a moving object and the reference point. A second step, a third step of changing the size of any one of the display bodies according to the distance obtained in the second step, and a fourth step of changing the scale of the screen according to the size change in the third step And the step of Further, in the image generation method according to the ninth aspect of the present invention, in the fourth step, in response to a size change in the third step,
11. The method according to claim 10, further comprising: changing a position of a viewpoint for forming an image.
In the image generation method according to the present invention,
The plurality of display bodies generated by the process are concentric circles having the same center point.

Therefore, by causing the computer to execute the processing in the steps described in claims 8 to 10,
It is possible to obtain the same effects as the first, second, and fifth aspects of the invention. Therefore, by executing the processing procedure described using hardware such as a general-purpose computer and a general-purpose game device, the game technology of the present invention can be easily implemented with these hardware.

Further, in the recording medium according to the present invention, a first procedure for creating a plurality of display bodies sharing a reference point and a second procedure for acquiring a distance between the moving body and the reference point are provided. A second procedure, a third procedure of changing the size of any one of the display objects according to the distance acquired in the second procedure,
A program for causing a computer to execute a fourth procedure of changing the scale of the screen according to the size change in the third procedure is recorded. Further, in the recording medium according to the twelfth aspect, the fourth procedure includes:
14. The recording medium according to claim 13, wherein a position of a viewpoint for forming a screen is changed according to the size change in the third procedure. The body is a concentric circle having the same center point. Therefore, according to the invention of claims 11 to 13, the program contained in the recording medium is read by a computer to be described in claims 1, 2, and 5. A game device can be realized. Therefore, the recording medium can be easily distributed and sold as a software product independently of the device. In addition, by using this software using hardware such as a general-purpose computer and a general-purpose game device, the game technology of the present invention can be easily implemented with these hardware.

[0021]

DESCRIPTION OF THE PREFERRED EMBODIMENTS Embodiments of the present invention will be described below with reference to the drawings. In the following description, a case where the present invention is applied to a home game machine will be described.

FIG. 1 is a diagram showing an overall configuration of a game system according to an embodiment of the present invention. The game system 51 is roughly divided into a game device main body 52 having a main function of the game system 51, and a controller 53 for inputting an operation instruction to the game device main body 52.
And C for storing a program, image data, sound data, and the like for realizing processing relating to a game described later.
D-ROM (Compact Disc Read Only Memory) 54
And a memory card 55 that stores game data such as game progress data and game environment setting data, and performs video display and sound output according to the game content based on video and audio signals from the game device main body 52. And a monitor display 56.

The game device main body 52 has a C
Disk holder 6 for setting D-ROM 54
1. Open button 6 for opening disk holder 61
2. A power button 63 and a reset button 64 are provided. Further, a slot 65 for mounting the controller 53 and the memory card 55 is provided on the front surface of the game apparatus main body 52. The controller 53 and the memory card 55 are removably attached to the game device main body 52 via the slot portion 65.

On the rear surface of the game apparatus main body 52, A
An AV output unit (not shown) to which a V (Audio and Visual) cable 57 is connected is provided. The game device main body 52 and the monitor display 56 are connected via the AV cable 57. The monitor display 56 has a CR
It is composed of T (Cathode Ray Tube) or the like.

FIG. 2 is a block diagram showing a circuit configuration of the game apparatus main body of FIG. 1 and its peripheral circuits. Game device body 5
2 is a CPU (Central Processing Unit) 101, GTE (Geometric Transform En
gine; graphics data generation processor) 10
2. Peripheral device 103, main memory 104, OS-
ROM (Operating System ROM) 105, MDEC (Mo
tion DECoder; data decompression engine) 106, PIO
(Parallel Input Output; extended parallel port) 10
7, SIO (Serial Input Output; extended serial port) 108, GPU (Graphics Processing Unit; graphics drawing processor) 109, frame buffer 110, SPU (Sound Processing Unit; sound reproduction processor) 111, sound buffer 1
12, a CD-ROM drive 113, a CD-ROM decoder 114, a CD-ROM buffer 115, and a communication device 116.

The CPU 101 and the peripheral device 10
3. Main memory 104, OS-ROM 105, MDE
C106, PIO107, SIO108, GPU10
9, the SPU 111, the CD-ROM decoder 114, and the communication device 116 are connected to each other via the bus 100.

The CPU 101 stores an OS (Operating System) stored in the OS-ROM 105,
Each part of the game device main body 52 is controlled based on programs and data read from the D-ROM 54 and expanded in the main memory 104.

Specifically, the CPU 101 is a CD-ROM
A game program, modeling data of a three-dimensional model, and the like are read from 54 and transferred to the main memory 104. Similarly, a color look-up table (CLUT) is read from the CD-ROM 54.
, Texture pattern data, and the like, and transfers them to the frame buffer 110 to instruct the GPU 109 to draw an image.

The GPU 109 responds accordingly to the GTE 10
Modeling processing and rendering processing are performed based on the coordinate data and color information obtained in step 2, CLUT and texture pattern data developed in the frame buffer 110, and the like. Then, a two-dimensional projected image of an arbitrary area in the virtual three-dimensional space configured by arranging the three-dimensional model is drawn on the frame buffer 110. After that, the image data is output to the monitor display 56 as a video signal by adding a synchronization signal or the like. As a result, an image corresponding to the game content is displayed on the screen of the monitor display 56.

The CPU 101 has a CD-ROM 54
Then, the sound data is read from the main memory 104 and transferred to the main memory 104 or the SPU 111 to instruct the SPU 111 to reproduce the sound. In response to this, the SPU 111 appropriately executes a modulation process, a reproduction process, and the like on these sound data. In addition, this sound reproduction data is stored in a CD-RO
The monitor display 56 is superimposed on the audio reproduction data transferred from the M decoder 114 to produce an audio signal.
Output to As a result, a built-in speaker (not shown) of the monitor display 56 outputs BGM according to the game content.
(BackGroud Music) and sound effects are output.

The CPU 101 generates a clock signal based on a timing signal supplied from an oscillator (not shown). The clock signal is counted by a built-in timer counter (not shown) to perform a time counting process.

The GTE 102 is connected to the CPU 101,
It operates as a coprocessor of the CPU 101. This GT
E <b> 102 performs a fixed point format matrix or vector operation in response to an operation request from the CPU 101. In this calculation processing, for example, for each of the three-dimensional coordinate data constituting the three-dimensional model, coordinate calculation such as movement, rotation, enlargement, reduction, etc., perspective transformation calculation to two-dimensional coordinate data, a virtually set light source Type, distance and angle from the light source,
This includes a luminance calculation for calculating the luminance of each part according to the viewpoint position and the like.

The peripheral device 103 performs interrupt control and D
Control such as MA (Direct Memory Access) transfer is performed. The main memory 104 is a memory for storing programs executed by the CPU 101 and data necessary for the execution. The memory configuration and stored data of the main memory 104 will be described later. OS
-The ROM 105 includes, for example, an OS kernel and a boot loader.
An OS for performing basic control of the game apparatus main body 52 is stored.

The MDEC 106 performs a process of expanding a compressed image. Specifically, JPEG (Joint Photographic Cod
ing Experts Group) or MPEG (Moving Picture)
Huffman coding (Huffman coding) for compressed image data of still images and moving images such as Expert Group
Decoding, inverse quantization, IDCT (InversedDi
Performs an operation such as a discrete cosine translation (inverse discrete cosine transform) to expand the compressed image data. Also, PI
O107 is an extension port for parallel data, SI
O108 is an extension port for serial data.

The GPU 109 is a sub-processor that operates independently of the CPU 101. This GPU109
Is a GTE 102 according to a drawing instruction from the CPU 101.
Coordinate data and color information obtained in step 2, frame buffer 1
Based on the CLUT, texture pattern data, and the like developed in 10, a modeling process and a rendering process of a three-dimensional model composed of a plurality of polygons are performed. Then, a two-dimensional projected image of an arbitrary area in the virtual three-dimensional space configured by arranging the three-dimensional model is drawn on the frame buffer 110. The polygon is a minimum unit of a figure constituting a three-dimensional model, and is formed of a polygonal plane such as a triangle or a quadrangle.

The GPU 109 generates a video signal by adding a synchronization signal to the image data thus drawn or the image data transferred from the main memory 104, and outputs the video signal to the monitor display 56.

The frame buffer 110 is constituted by a dual port RAM, and stores a drawing area for storing image data drawn by the GPU 109 or image data transferred from the main memory 104 and image data to be displayed on the monitor display 56. And a display area. The drawing area and the display area are alternately switched by the GPU 109 in accordance with the field rate when displaying an image.

In addition, the frame buffer 110 stores a color lookup table (CLUT) referred to for specifying a color, texture pattern data for texture mapping, and the like.

The SPU 111 is a sub-processor that operates independently of the CPU 101. This SPU111
Are ADPCM (Adaptive) stored in the sound buffer 112 in accordance with a sound reproduction instruction from the CPU 101.
Various modulation processing such as volume adjustment processing, pitch conversion, pitch adjustment, envelope, and reverb are appropriately performed on the sound data in the Differential Pulse Code modulation (Differential Pulse Code Modulation) format. In addition, the reproduction processing is performed, and the reproduced signal is output to the monitor display 56 as an audio signal.

The SPU 111 converts the audio reproduction data transferred from the CD-ROM decoder 114 into an SP.
The data is superimposed on the sound reproduction data reproduced in U111 and output to the monitor display 56 as an audio signal.

The sound buffer 112 includes the CPU 101
Is a memory for temporarily storing ADPCM-format sound data and the like transferred from the main memory 104. The sound buffer 112 is used for the SPU 11
1 is used as a work area when performing reverb processing, and sound data for processing is stored in the main memory 104.
It is also used as a buffer when transferring to.

The CD-ROM drive 113 has a CD-R
The drive control of the OM 54 is performed, and the encoded data stored in the CD-ROM 54 is read. CD-ROM
The decoder 114 has a CD-ROM drive 113
Decoding the data read from the ROM 54 and performing error correction processing, etc., and transfers the decoded programs and data to the main memory 104, the SPU 111, and the like. The CD-ROM drive 113 includes an internal sound source and a mixer (both not shown) and has a function of reproducing audio data. CD-ROM buffer 115
Is a memory for temporarily storing transfer data.

The communication device 116 includes the controller 5
3 and the memory card 55 are connected. The communication device 116 includes the controller 53 and the memory card 5
5 and each part of the game device main body 52, for example, the CPU 101
And data transfer with the main memory 104.

The controller 53 is an input device for transmitting various operation signals corresponding to the operation input from the player to the game apparatus main body 52 via the communication device 116.
The controller 53 is provided with a plurality of input buttons such as a start button and a direction key. The memory card 55 is configured by a flash memory and stores game data.

In this game device main body 52,
Main memory 104, frame buffer 110, sound buffer 112, CD-ROM buffer 115, M
It is necessary to transfer a large amount of image data and sound data to the DEC 106 when displaying images and outputting sounds. For this reason, in order to perform data transfer at high speed, data transfer is directly performed between the two devices under the control of the peripheral device 103 without the intervention of the CPU 101.
MA transfer is performed.

In the first embodiment, the CPU 1
01 has a function of a generation unit, a size change unit, and a scale change.

Next, the CPU 101 causes the CD-ROM 5
4 and the programs and data stored in the main memory 104 will be described.

FIG. 3 is a diagram showing a memory configuration of the main memory 104. As shown in FIG.
Is a program storage area 104a for storing a program to be executed by the CPU 101, and a stage data storage area 104b for storing two-dimensional image data and the like used as a background of the current stage in the game according to the present embodiment in which the game is advanced for each stage. Data storage area 104c for storing modeling data of a three-dimensional model, character image data, and the like, and other areas 104
d etc. In this other area 104d, FIG.
, Three-dimensional coordinate data of the reference point, three-dimensional coordinate data of the main character, and three-dimensional coordinate data of each of the enemy characters 1 are stored.

In the present embodiment having the above configuration, when a game is started, the CPU 101 secures an area for storing information in the main memory 104, and thereby, as shown in FIG. The program area 104a, the stage data area 104b, the character area 104c, the other area 104d, and the like are secured. Then, when there is a game start request, information necessary for the stage of the game to be started is read from the CD-ROM 54 into the main memory 104. That is, in the present embodiment, the game that is executed based on the game program stored in the CD-ROM 54 is composed of a plurality of stages, each of which is an independent game. Information on CD-ROM5
Then, stage processing is started by reading from step 4.

With the start of this stage processing, the CPU
101 operates according to the flowchart shown in FIG. 5, and first executes an initial process (S101). This initial processing is
This is performed according to the flowchart shown in FIG. 6, and the initial coordinates of the moving object are acquired (S201). Here, the moving object is
The main character on this stage, which is an object that is moved by the operation of the player, is the moving object 304 shown in FIG. 8A or the moving object 3 shown in FIG.
04.

Next, the radius of the second display body 303 is set. When setting the radius of the second display body 303, a reference point 301 is set in advance, and the reference point 301 is centered on the reference point 301. The radius of a circle having the initial coordinates of the moving body 304 as one point is calculated and set (S202). Subsequently, a second display body 303 composed of a circle having the radius is generated, and a first display composed of a circle centered on the reference point 301 having a much smaller radius than the second display body 303 is generated. Generate a body 302. At this time, the first and second display bodies 302 and 303 are generated on the same plane (S20).
3). Further, a viewpoint 305 is set.
5 is set a predetermined distance behind the moving body 304 (S20).
4).

In FIGS. 8A and 9A, reference numerals 306 and 307 denote viewing angle critical lines indicating the viewing angle from the viewpoint 305, and the second display body having the viewpoint 305 as a base point. 303. 9A, reference numeral 309 denotes a display area when drawing on the monitor display 56. In the same figure, an enemy character 308 is arranged on a reference point (not shown).
Therefore, when the next drawing process (S205) is executed in a state where the elements shown in FIG. 9A are generated, the monitor display 56 displays from the viewpoint 305 as shown in FIG. The viewed enemy character 308 is drawn on the reference point, and a first display body 302 composed of a small-diameter circle is drawn around the lower part of the enemy character 308. On the same plane around the first display body 302, A second display object which is a concentric circle and intersects with the moving object 304 is drawn.

Then, S101 of the flowchart of FIG.
In S102 following step S102, the game start display is performed on the screen shown in FIG.
03) is performed. This movement processing (S103) is performed in the manner shown in FIG.
Is performed according to the flowchart shown in FIG.
It is checked whether or not there has been a character movement input from 3 (S301). If there is a movement input, it is checked whether or not it is a forward / backward movement input (S302). If not, it is determined that the input is a rotational movement input, and a rotational movement process is executed (S307). .

In this rotational movement processing, the position coordinates when the movable body 304 is moved on the second display body 303 are obtained in accordance with the rotational movement method and the movement distance inputted from the controller 53. Therefore, when the input from the controller 53 is a rotational movement in the left direction, as shown by an arrow in FIG.
The coordinates of the position moved leftward on the second display 303 are obtained. However, in the rotational movement processing, the scale of the screen is not changed unlike the forward / backward movement processing described later.

If the result of the check in S302 indicates that the input is a forward / backward movement, the distance between the moving body 304 and the reference point 301 in the case of forward / backward movement is acquired (S303).
The distance between the obtained moving object 304 and the reference point 301 is
As shown in FIG. 11, it is checked whether or not the radius is equal to or more than a first radius (R _MIN ) which is the radius of the first display body 302 (S304). Then, the distance is equal to the first radius (R
_MIN ), the process of moving back and forth (S306)
Return without performing. Further, when the distance between the moving body 304 and the reference point 301 when moved forward and backward is greater than or equal to the first radius (R _MIN ), this distance is the maximum radius of the second display body 303. 3 of radius (R _MAX) hereinafter become whether checked (S305), even when the third greater than the radius (R _MAX), before and after movement processing (S30
Return without performing 6). Then, when the moving body 304 is moved back and forth, only when the moving body 304 is within the range between the first radius (R _MIN ) and the third radius (R _MAX ), the moving process is performed (S306). Therefore, the moving body 30
The movement of 4 is limited within a first radius (R _MIN ) and a third radius (R _MAX ).

In the forward / backward moving process (S306), the moving body 304 is moved back and forth on a straight line connecting the moving body 304 and the reference point 301 according to the moving direction input and the moving distance input inputted from the controller 53. The position coordinates in the case where it is made to be obtained. Therefore, when the input from the controller 53 is forward movement, the moving body 304 is moved in the direction approaching the reference point 301 on the straight line as indicated by an arrow 'in FIG. 8B. The position coordinates of the case are obtained.

In the flowchart of FIG.
Subsequent to the above movement processing (S103), the second display 3
03 is set (S104). That is, as described above, the moving body 304 is generated on the second display body, the coordinates of the position to which the moving body 304 should move are clear, and the second display body 303 has the reference point 301. , The radius of the second display body 303 is calculated and set based on these circles. Subsequently, a second display body 303 having the set radius and a circle centered on the reference point 301 is generated (S105). At this time, as described above, since the movement of the moving body 304 is limited to the range between the first radius (R _MIN ) and the third radius (R _MAX ), the generated second display is generated. The radius of the body 303 is equal to or _larger than the first radius (R _MIN ) and the third radius (R _MAX )
It is as follows.

Further, the viewpoint 305 is moved back and forth according to the position of the moving body 304, and the scale of the screen is changed in accordance with the movement of the viewpoint back and forth (S106). Thereafter, a drawing process is executed based on the viewpoint 305 moved forward and backward and the scale of the changed screen (S10).
7). Therefore, as shown in FIG.
When 04 approaches the enemy character 308 located on the reference point, the enemy character 308 and the first display body 302 are displayed large as shown in FIG. As shown in FIG. 10A, the enemy character 308 and the first display 30
2 will be displayed small.

At this time, the first display 3 composed of concentric circles
By focusing on the size of the second display body 303 with respect to the size of 02, it is possible to easily and clearly grasp the distance of the moving body 304 to the enemy character 308 on the screen having the changed scale. Moreover,
First and second circles that are extremely simple on the screen
Since the distance can be grasped only by displaying the display bodies 302 and 303, the influence on the background image of the space in which the moving body 304 moves is very small. Also,
Since the moving body 304 and both the display bodies 302 and 303 are displayed on the same screen, both can be visually recognized with the same line of sight, and there is no movement of the line of sight.

Then, in S108 following S107, it is checked whether or not the game is over, and the loop of S103 to S108 is repeated until the game is over. When the game is over, a game completion display is displayed on the monitor display 56. Go (S109) and end the game.

In this embodiment, a case has been described in which the present invention is realized using a home game machine as a platform. However, the present invention may be realized by using a general-purpose computer such as a personal computer or an arcade game machine as a platform. In the present embodiment, programs and data for realizing the present invention are stored in a CD-ROM, and the CD-ROM is used as a recording medium. However, the recording medium is not limited to a CD-ROM, but may be another computer-readable magnetic or optical recording medium such as a magnetic disk or a ROM card or a semiconductor memory.

The programs and data for realizing the present invention are not limited to the form provided by a medium such as a CD-ROM that is detachable from a game machine or a computer. May be preinstalled. Further, a program or data for realizing the present invention may be received from another device connected via a communication line or the like and recorded in a memory. Further, the program and data may be recorded in a memory of another device connected via a communication line or the like, and the program or data may be used via a communication line or the like.

[0063]

As described above, according to the present invention, the first and second display objects sharing the reference point are generated, and the size of the second display object is changed according to the reference point and the distance of the moving object. In addition, the scale of the screen is changed according to the changed size. Therefore, by focusing on the size of the second display body with respect to the size of the first display body, it is possible to easily grasp the distance of the moving body to the reference point on the screen including the changed scale. Moreover, since only the first and second display bodies are displayed on the screen, the influence of the space in which the moving body moves on the background image can be reduced. In addition, since it is only necessary to display the moving body and the display body on the same screen, it is possible to visually recognize both of them with the same line of sight, and there is no movement of the line of sight. Therefore, the player can concentrate on the game, and can fully enjoy the fun of the game without losing an operation chance in an important scene in the game.

Further, since the position of the viewpoint for forming the screen is changed in accordance with the changed size of the second display body, the second display body is composed of only lines. Even in a simple form, the change in the size can be clearly recognized by changing the position of the viewpoint, so that the form of the second display body or the first display body is simplified, and a background image or the like is obtained. It is possible to easily grasp the distance of the moving object to the reference point while minimizing the influence on the moving object.

Further, since the first and second display bodies are generated on the same plane, a change in the size of the second display body can be clearly recognized. It is possible to clearly grasp the distance to the reference point.

Further, since the first and second display bodies are generated as similar shapes, a change in the relative size of the second display body can be clearly recognized, and as a result,
The distance to the reference point of the moving object can be clearly grasped.

Further, since the first and second display bodies are generated as concentric circles centered on the reference point, the size of the second display body with respect to the first display body which is a concentric circle is clearly recognized. Not only can the distance to the reference point of the moving object be clearly grasped, but also at this time, the reference point is the center of the first and second display objects formed of concentric circles, The grasp of the distance to the reference point of the moving object becomes clearer. Moreover, since both display bodies are circles in a very simple form, it is possible to minimize the influence on the background image.

If it is determined that the size of the second display is larger than the size of the first display, the second display
Because the size of the display body of the was changed, the second
The range of change in the size of the display body can be limited to an appropriate range recognizable by the naked eye. As a result, in the entire range in which the size of the second display body changes, the distance between the moving body and the reference point can be appropriately adjusted. The distance can be grasped.

When the size of the second display body is not changed, the movement of the moving body that leads to the change of the size is not performed. The size limit will be matched,
The distance to the reference point due to the change in the size of the second display body can be ascertained with certainty up to the movement limit of the mobile body.

[0070]

[Brief description of the drawings]

FIG. 1 is a perspective view showing an overall configuration of a game system to which an embodiment of the present invention is applied.

FIG. 2 is a block diagram showing a circuit configuration of the game apparatus main body of FIG. 1 and its peripherals.

FIG. 3 is a diagram showing a memory configuration of a main memory.

FIG. 4 is a diagram showing a configuration of another area in the main memory.

FIG. 5 is a flowchart illustrating a processing procedure of a CPU.

FIG. 6 is a flowchart showing details of an initial process in the flowchart of FIG. 5;

FIG. 7 is a flowchart showing details of a movement process in the flowchart of FIG. 5;

FIG. 8A is a conceptual diagram illustrating a positional relationship between a reference point, first and second display bodies, and a moving body, and processing contents of a rotational movement process;
(B) is a conceptual diagram showing the processing content of the back and forth movement processing.

FIG. 9A shows an enemy character, first and second display bodies,
FIG. 7B is a conceptual diagram showing the positional relationship of the moving object and the processing contents of the rotational movement processing, and FIG.

10A is an image drawn from the viewpoint of FIG. 9A, and FIG. 10B is an image drawn from the viewpoint of FIG. 9B.

FIGS. 11A and 11B are conceptual diagrams showing a first radius and a third radius.

FIG. 12 is a diagram showing a display mode according to the related art.

[Explanation of symbols]

 301 viewpoint 302 first display body 303 second display body 304 moving body 305 viewpoint

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Claims (13)

[Claims] 1. A game device having a function of expressing movement of a moving object, comprising: generating means for generating first and second display objects sharing a reference point; and a distance from the reference point of the moving object. A game apparatus comprising: a size changing unit configured to change a size of the second display according to the size of the second display; and a scale changing unit configured to change a scale of a screen according to a size change of the size changing unit. 2. The game device according to claim 1, wherein the scale changing unit changes a position of a viewpoint for forming a screen according to a size change of the size changing unit. 3. The game device according to claim 1, wherein the generation unit generates the first and second display bodies on the same plane. 4. The apparatus according to claim 1, wherein the generating unit generates the first and second display bodies as similar shapes.
4. The game device according to 2 or 3. 5. The game device according to claim 1, wherein the generating means generates the first and second display bodies as concentric circles centered on the reference point. 6. The size change unit further comprising: a comparison unit that compares a size of the first display unit with a size of a second display unit that is changed according to a distance between the mobile unit and the reference point. Changing the size of the second display when the comparing means determines that the size of the second display is larger than the size of the first display. Item 6. The game device according to any one of Items 1 to 5. 7. The game apparatus according to claim 6, wherein when the size of the second display body is not changed by the size changing unit, the moving body that leads the change of the size is not moved. 8. A first step of generating a plurality of display objects sharing a reference point, a second step of acquiring a distance between a moving object and the reference point, and a step of acquiring the distance according to the distance acquired in the second step. An image generation method, comprising: a third step of changing a size of any one of the display bodies; and a fourth step of changing a scale of a screen according to the size change in the third step. 9. The image generating method according to claim 8, wherein in the fourth step, a position of a viewpoint for forming an image is changed according to the size change in the third step. 10. The image generation method according to claim 8, wherein the plurality of display bodies generated in the first step are concentric circles having the same center point. 11. A first procedure for creating a plurality of display objects sharing a reference point, a second procedure for acquiring a distance between a moving object and a reference point, and A recording medium recording a program for causing a computer to execute a third procedure of changing the size of any one of the display bodies and a fourth procedure of changing the scale of the screen according to the size change in the third procedure. 12. The recording medium according to claim 11, wherein in the fourth step, a position of a viewpoint for forming a screen is changed according to a change in size in the third step. 13. The recording medium according to claim 11, wherein the plurality of display bodies generated by the first procedure are concentric circles having the same center point.