JP2001067496A - Picture generation system and information storage medium - Google Patents

Abstract

PROBLEM TO BE SOLVED: To generate the picture of an object, which realistically and naturally waves, with less data quantity and operation load by means of reflecting a shock position and the size and the direction of a shock by operating the displacement of a face specification point generated based on the shock. SOLUTION: A face specification point means the top of a polygon when the primitive face of an object is a polygon face, for example. A game operation part 110 contains a displacement operation part 120 operating the displacement of the face specification point. The displacement operation part 120 detects a shock added to the object and gives displacement to the face specification point in accordance with a distance to the face specification point from the size and the direction of the added shock, and the shock position of the object. A processing for giving displacement for keeping the distance between the adjacent face specification points to be constant or to be in a prescribed range is executed. A processing for giving displacement for returning the face specification point to a reference position is executed. A picture generation part 160 generates the picture of the object based on the displacement of the operated face specification point.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

[0001] The present invention relates to an image generation system and an information storage medium.

[0002]

2. Description of the Related Art Conventionally, there has been known an image generation system for generating an image which can be viewed from a given viewpoint in an object space which is a virtual three-dimensional space. It is popular as an experience. Taking an image generation system that can enjoy a gun game as an example, a player (operator) uses a gun-type controller (shooting device) imitating a gun or the like to display an enemy character ( Enjoy a 3D game by shooting target objects such as objects).

[0003] In such an image generation system,
Generating more realistic images has become an important technical issue for improving the virtual reality of players. Therefore, it is desired to be able to more realistically express, for example, a swaying motion like a wave when a shock such as a bullet is applied, such as a suspended cloth such as a curtain or a hanging string.

[0004] However, in the conventional image generation system, an image which oscillates like a wave is prepared in advance, and when a bullet hits a curtain or the like, the image is simply replaced with the prepared image. Even hit anywhere for this, also receives the different bullet sizes and directions, only image curtains rippling like are displayed, has been a image representation lacked reality monotonic.

The present invention has been made in view of such a conventional problem, and has as its object to reduce the image of an object that undulates realistically and naturally by reflecting the impact position, the magnitude and direction of the impact. An object of the present invention is to provide an image generation system and an information storage medium that can be generated with an amount and a calculation load.

[0006]

SUMMARY OF THE INVENTION The present invention relates to an image generating system for generating an image of an object composed of primitive surfaces, comprising a surface specifying point for specifying a primitive surface generated based on an impact applied to the object. Displacement calculating means for calculating the displacement of the object, and image generating means for generating an image of the object based on the calculated displacement of the plane specific point, wherein the displacement calculating means detects an impact applied to the object. Means for giving a displacement to the plane specific point according to the magnitude and direction of the applied shock and the distance from the impact position of the object to the plane specific point,
It is characterized by including means for giving a displacement for keeping the distance between adjacent plane specific points within a predetermined or predetermined range, and means for giving a displacement for returning the plane specific point to the reference position.

[0007] An information storage medium according to the present invention is an information storage medium usable by a computer, and includes information (program) for realizing (executing) the above means. The program according to the present invention is a program usable by a computer, and includes a processing routine for realizing (executing) the above means.

The object composed of a primitive surface means, for example, an object composed of a polygon surface or a free-form surface.

The surface specific point means a vertex of a polygon when the primitive surface is a polygon surface, for example.
A free-form surface means a control point.

As means for giving a displacement to the plane specific point, an acceleration vector or a velocity vector may be set,
The displacement may be applied directly, or a force may be applied to apply the displacement.

The object may be decomposed into a plurality of primitive surfaces specified by the surface specific point before receiving the impact, or may be decomposed into a plurality of primitive surfaces after receiving the impact.

To keep the distance between adjacent plane specific points constant means, for example, whether to keep the distance between the plane specific points of an object that does not expand or contract to its natural length or to keep it at a predetermined reference value. Good. Keeping the distance between adjacent surface specific points within a predetermined range refers to, for example, setting at least one of an upper limit and a lower limit so that the distance falls within the range. The reference position may be provided, for example, for each surface specific point, or may be provided according to a predetermined rule.
Further, for example, a position returned by applying a gravitational acceleration or the like may be set as the reference position.

As means for giving a displacement for returning to the reference position set for each surface specific point, an acceleration vector or a velocity vector may be set. Further, a case where a force is applied to give a displacement or a case where a displacement is directly given may be used.

According to the present invention, an applied impact is detected in real time, and a displacement is applied to the specific surface point according to the magnitude and direction of the applied impact and the distance from the impact position of the object to the specific surface point. Thus, the vicinity of the impact position of the object can be displaced in the impact direction according to the magnitude of the impact. Since the distance between adjacent plane specific points can be kept constant or within a predetermined range, it is possible to represent an object whose form is deformed in accordance with a given displacement without expanding and contracting. In addition, since the plane specific point can be returned to the reference position set for each plane specific point, the object whose form has been deformed according to the given displacement fluctuates like a wave and returns to the original position can do.

Further, the present invention is an image generating system for generating an image of an object constituted by a primitive surface, wherein an impact applied to the object is detected, and the vicinity of the impact position of the object is determined according to the magnitude and direction of the impact. Means for performing an operation for temporally changing the positional relationship of a surface specific point that specifies a primitive surface so as to undulate,
Image generating means for generating an image of a wavy object based on the plane specific point.

The information storage medium according to the present invention is an information storage medium usable by a computer, and includes information (program) for realizing (executing) the means. The program according to the present invention is a program usable by a computer, and includes a processing routine for realizing (executing) the above means.

According to the present invention, in order to temporally change the positional relationship of the specific surface of the object according to the magnitude and direction of the impact position and the impact vector, the impact position, the magnitude and direction of the impact are reflected. It is possible to generate an image of a real and naturally waving object.

The object of the present invention of the image generating system, the information storage medium and the program is characterized by waving in a predetermined axial direction.

If the predetermined axial direction is, for example, the vertical direction, an image of the object waving in the vertical direction is generated.

According to the present invention, it is possible to express, for example, a state in which a cloth or a string draws a waveform in a certain direction.

Further, the image generation system, the information storage medium and the program according to the present invention return to the acceleration vector and the reference position calculated based on the direction and magnitude of the impact and the distance from the impact position at the specific point on the front surface. Is calculated, and at least one of the position vector and the velocity vector of the plane specific point is calculated based on the given acceleration vector, and the position is calculated so that the distance between the adjacent plane specific point is constant or within a predetermined range. Means for correcting at least one of the vector and the velocity vector.

According to the present invention, in order to apply the acceleration vector calculated on the basis of the direction and magnitude of the impact and the distance from the impact position to the specific point on the surface, the specific surface point is determined by the direction and magnitude of the impact. And is displaced based on the distance from the impact position. Then, by giving an acceleration vector for returning to the reference position, it is possible to express a state in which the displaced surface specific point undulates like a wave and returns to the original position. The acceleration vector for returning to the reference position is, for example, gravitational acceleration or the like.

Further, at least one of the position vector and the velocity vector of the plane specific point is calculated based on the given acceleration vector, and the position vector and the velocity vector are calculated so that the distance to the adjacent plane specific point is a fixed distance or within a predetermined range. By correcting at least one of the velocity vectors, an image in which an object that does not expand or contract like paper, cloth, or a string shakes like a wave can be expressed.

Further, the image generation system, the information storage medium and the program according to the present invention are characterized in that they include means for attenuating the velocity vector acting on the specified point on the preceding plane or the displacement of the specified point on the preceding plane with time.

According to the present invention, it is possible to express how the wave-like fluctuation caused by the impact attenuates with time.

Further, the image generation system, the information storage medium and the program according to the present invention are characterized in that the plane specific points are distributed in a grid pattern at predetermined intervals.

By distributing them in a grid at predetermined intervals, it is possible to express uniform wave propagation regardless of where the shock is applied.

Further, by keeping the lattice points constant, it is possible to simplify the calculation processing of the position correction of the moving point based on the displacement vector given by the displacement with the adjacent surface specific point.

Further, an image generation system, an information storage medium, and a program according to the present invention are characterized in that an image of an object composed of a plurality of polygon surfaces having the surface specific point as a vertex is generated.

According to the present invention, the positional relationship between the vertices of the polygon object is temporally changed in accordance with the impact position and the magnitude and direction of the impact vector with respect to the polygon object to reflect the magnitude and direction of the impact. It is possible to generate an image of a real and naturally waving object.

[0031]

Preferred embodiments of the present invention will be described below with reference to the drawings. In the following, a case where the present invention is applied to a gun game (shooting game) using a gun-type controller will be described as an example.
The present invention is not limited to this, and can be applied to various games.

1. 1. Configuration FIG. 1 shows a configuration example when the present embodiment is applied to an arcade game system.

The player 500 has a gun-type controller (shooting device in a broad sense) 502 made by imitating a real machine gun. Then, a gun game is enjoyed by shooting while aiming at a target object such as an enemy character (object in a broad sense) projected on the screen 504.

In particular, the gun-type controller 5 of the present embodiment
02, when the trigger is triggered, a virtual shot (bullet) is automatically fired at a high speed. Therefore, it is possible to give the player a virtual reality feeling as if shooting a real machine gun.

The hit position (landing position) of the shot
May be detected by providing an optical sensor in the gun-type controller 502 and detecting the scanning light of the screen using the optical sensor, or by emitting light (laser light) from the gun-type controller 502, May be detected by detecting the irradiation position of using a CCD camera or the like.

FIG. 2 shows an example of a block diagram of the present embodiment. In this figure, the present embodiment may include at least the processing unit 100 (or the processing unit 100 and the storage unit 1).
40, or the processing unit 100, the storage unit 140, and the information storage medium 150), and other blocks (for example, the operation unit 130, the image generation unit 160, the display unit 162, the sound generation unit 170, the sound output unit 172, The communication unit 174, the I / F unit 176, the memory card 180, and the like) can be optional components.

The processing unit 100 performs various processes such as control of the entire system, instruction of instructions to each block in the system, game calculation, and the like.
PU (CISC type, RISC type), DSP or AS
It can be realized by hardware such as an IC (gate array or the like) or a given program (game program).

The operation section 130 is used by the player to input operation data, and its function can be realized by hardware such as the gun-type controller 502, lever, and button in FIG.

The storage section 140 includes a processing section 100, an image generation section 160, a sound generation section 170, a communication section 174, and an I / F section 1.
It is a work area such as 76, and its function is RAM
It can be realized by hardware such as.

An information storage medium (a storage medium usable by a computer) 150 stores information such as programs and data.
D, DVD), magneto-optical disk (MO), magnetic disk, hard disk, magnetic tape, or semiconductor memory (ROM). The processing unit 100 performs various processes of the present invention (the present embodiment) based on the information stored in the information storage medium 150.
That is, the information storage medium 150 stores various information (programs, data) for realizing (executing) the means (particularly, the blocks included in the processing unit 100) of the present invention (the present embodiment).
Is stored.

A part or all of the information stored in the information storage medium 150 is transferred to the storage unit 140 when the power to the system is turned on. Information storage medium 1
The information stored in 50 is a program code for performing the processing of the present invention, image information, sound information, shape information of a display object, table data, list data, player information,
The information includes at least one of information for instructing the process of the present invention, information for performing a process according to the instruction, and the like.

The image generating section 160 generates various images according to an instruction from the processing section 100 and the like, and
The function is the ASI for image generation.
It can be realized by hardware such as C, CPU, or DSP, a given program (image generation program), and image information.

The sound generation section 170 generates various sounds in accordance with instructions from the processing section 100 and outputs the generated sounds to the sound output section 172. The functions of the sound generation section 170 include a sound generation ASIC,
It can be realized by hardware such as a CPU or a DSP, a given program (sound generation program), and sound information (waveform data and the like).

The communication unit 174 performs various controls for performing communication with an external device (for example, a host device or another image generation system).
It can be realized by hardware such as SIC or CPU, or a given program (communication program).

The information for realizing the processing of the present invention (the present embodiment) is distributed from the information storage medium of the host device (server) to the information storage medium 150 via the network and the communication unit 174. Is also good. Use of the information storage medium of such a host device (server) is also included in the scope of the present invention.

Some or all of the functions of the processing unit 100 may be performed by the image generation unit 160, the sound generation unit 170, or the communication unit 1.
74 may be realized. Or,
Image generation unit 160, sound generation unit 170, or communication unit 174
Some or all of the functions may be realized by the function of the processing unit 100.

The I / F unit 176 exchanges information with a memory card (portable information storage device including a portable game machine in a broad sense) 180 in accordance with an instruction from the processing unit 100 or the like. The interface functions as a slot for inserting a memory card, a controller IC for writing and reading data, and the like.
It can be realized by such as. When information exchange with the memory card 180 is realized using wireless communication such as infrared light, the function of the I / F unit 176 can be realized by hardware such as a semiconductor laser and an infrared sensor.

The processing section 100 includes a game calculation section 110.

Here, the game calculation section 110 performs processing for accepting coins (price), setting processing for various modes, processing for proceeding with a game, setting processing for a selection screen, and the position and rotation angle (X) of an object (character, moving body). , A rotation angle about the Y or Z axis), a process of determining a viewpoint position and a viewing angle, a process of reproducing or generating a motion of an object, a process of arranging an object in an object space,
Various game calculation processes such as a hit check process, a process of calculating game results (results and results), a process for a plurality of players playing in a common game space, and a game over process are performed by operating the operation unit 130. data,
This is performed based on data from the memory card 180, a game program, and the like.

The game calculation section 110 includes a displacement calculation section 120 for calculating a displacement of a plane specific point generated based on an impact applied to the object.

The displacement calculating unit 120 detects the impact applied to the object, and determines the surface specific point according to the magnitude and direction of the applied impact and the distance from the impact position of the object to the specific surface. Processing to give displacement,
Processing for giving a displacement for keeping the distance between adjacent plane specific points within a predetermined or predetermined range and processing for giving a displacement for returning the plane specific point to the reference position are performed.

When an impact is applied to the object, the image generating section 160 generates an image of the object based on the calculated displacement of the specified point on the front surface. Note that the image generation system of the present embodiment may be a system dedicated to the single player mode in which only one player can play, or a multi-player mode in which a plurality of players can play in addition to such a single player mode. A system may also be provided.

When a plurality of players play,
The game image and the game sound to be provided to the plurality of players may be generated using one terminal, or may be generated using a plurality of terminals connected by a network (transmission line, communication line) or the like. Is also good.

2. Features and operations of the present embodiment The features of the present embodiment are to detect an impact position and an impact direction and magnitude in real time, and generate an image of a waving object reflecting the impact position and the impact magnitude and direction. In that they can do it.

FIGS. 3A to 3H are diagrams for explaining how the curtain appearing in the game image of the present embodiment undulates. FIGS. 3A, 3B, 3C, and 3D are front views of the curtain viewed in chronological order, and FIGS. 3E, 3F, and 3G.
(H) is a side view corresponding to each.

In this embodiment, the curtain 200 is 210
When it receives a bullet impact 230 near it (Fig. 3 (A)
(See FIG. 3E), and a wave-depressed image near the impact position 210 is generated (see FIGS. 3B to 3D and 3F to 3H).

FIGS. 4 and 5 are diagrams for explaining an example of a process of generating an image in which the curtain is wavy due to an impact in the present embodiment. FIG. 6 is a flowchart for explaining an operation example of the present embodiment.

As shown in FIG. 4, in the present embodiment, one curtain object 300 is divided into a quadrilateral or triangular polygon surface having a plurality of surface specific points arranged in a grid at intervals of about 45 cm. I do.

The curtain may be configured in advance as an object composed of a plurality of quadrilateral or triangular polygon surfaces having the surface specific point as a vertex, or may be divided in real time when an impact is applied. Hereinafter, a description will be given assuming that the surface specific point is a vertex of a polygon surface constituting the object.

As shown in FIG. 4, when an impact is applied to the point S, an acceleration vector 320 is set at a vertex within a circle 310 at a predetermined distance from the point S (the lattice point is a vertex in FIG. The arrow extending from the vertex is the acceleration vector). It is preferable that the magnitude of the acceleration vector is set to be larger as the magnitude of the received impact is larger, and to be set larger as the distance from the point S to the vertex is shorter. Further, it is preferable that the direction of the acceleration vector be the direction in which the impact is received.

Next, a method of expressing the state in which the curtain is wavy by changing the vertex with time based on the set acceleration vector will be described.

For simplicity, the description will be made using a simplified model of the number of vertices and the added acceleration vector as shown in FIG. It is assumed that p1 to p25 in FIG. 5 are vertices, and the position vectors of the vertices are P1 to P25. a8, a12, a13, a14, and a18 are vertices p8, p12, p13, and p1 when an impact is applied to the S point.
4, acceleration vector set in p18.

In the present embodiment, since an image of a suspended curtain is generated, the position vectors P1, P6, P11, P16, and P21 of vertices p1, p6, p11, p16, and p21, which correspond to the upper end of the curtain, are determined. Fix it.
Then, for the other vertices, the position vector is obtained in the manner described with reference to the flowchart of FIG.

In this embodiment, since the upper end of the curtain is fixed, the processing of each vertex is performed for each row in order from top to bottom. In the case of FIG. 5, processing is performed in the order of p1 to p25.

An example of calculating the displacement of each vertex that changes with time due to an impact will be described with reference to the flowchart of FIG.

In the present embodiment, steps S10 to S140 are applied to vertices that are not fixed.
Are performed, and the position vector of each vertex is calculated for each frame. The position vector is, for example, relative to a reference position in the local coordinate system of the curtain.

Here, Pi is the position vector of each vertex, Vi is the velocity vector, G is the gravitational acceleration, and K is the damping coefficient. In the stationary state of the curtain, each velocity vector Vi is 0. However, when an acceleration vector is set at a vertex by an impact, an initial value of the velocity vector is given to the vertex at which the acceleration vector is set. Thereafter, the velocity vector Vi and the position vector Pi of each vertex are calculated according to the flowchart of FIG.

Lu is the original distance (natural length) between the vertex to be processed and the vertex immediately above it, Ll is the original distance (natural length) between the left vertex and Lr is the natural distance between the vertex on the right and Lr. This is the original distance (natural length). For example, if P13 in FIG. 5 is taken as an example, L
u is the distance to P12, Ll is the distance to P8, and Lr is the distance to P18.

In FIG. 5, p1, p2, p3, p4, p
Since 5 is a fixed vertex, the position vectors P1, P
2, P3, P4, and P5 do not change, but the other vertices are not fixed vertices.
The processing from step 10 to step S140 is performed to calculate the position vector of each vertex.

First, in steps S10 to S30, a position vector PWi of an expected movement position of the vertex is calculated based on the current velocity vector Vi, the gravitational acceleration G, and the damping coefficient K.

However, there are cases where the distance to the left and right vertices is different from the original distance in addition to the predicted movement position.
The target object of the present embodiment is a curtain or the like,
Since it is hardly expanded or contracted, correction processing of the position vector and the velocity vector for keeping the distance between the adjacent upper vertex constant is performed in steps S40 to S60. Then, in steps S70 to S140, a velocity vector correction process is performed in relation to other vertices in the left-right direction.

Position vector WPi of expected movement position of vertex
In the arithmetic processing of (1), first, n of the vertex (pi) to be processed is
WVi = G + Vi (n) is obtained by adding the gravitational acceleration G to the speed vector Vi (n) of the frame (step S).
10).

The obtained velocity vector WVi is multiplied by the damping coefficient K to set WVi = K (G + Vi (n)) (step S20).

Then, WVi is added to the obtained velocity vector to the position vector Pi (n) of the vertex pi of the n-th frame.
WPi = Pi (n) + WVi (Step S3)
0).

This WPi is the position vector of the expected movement position of the vertex calculated based on the acceleration vector given by the impact, the gravitational acceleration, and the damping coefficient.

Next, as a correction process for maintaining a constant distance from the upper adjacent vertex, first, the displacement vector Du of the previous expected movement position and the upper adjacent vertex is obtained (step S4).
0). For example, if the vertex currently being processed is p13,
The vertex on the upper side is p12. Therefore, a displacement vector Du between p12 and the expected movement position of p13 is determined.

Then, the difference (lu-Lu) between the natural length Lu of the magnitude lu of the displacement vector Du and the upper vertex is obtained, and the correction vector Au = (lu-Lu) .Du / | Du | is obtained. Here, Du / | Du | is a unit vector in the displacement vector Du direction (step S50).

Then, Au is added to the position vector WPi.
WPi = WPi + Au. Also, Au is added to the velocity vector WVi, and WVi = WVi + Au is set (step S60).

Next, a correction process of the velocity vector Vi in relation to the vertex on the left is performed.

If there is a vertex on the left side, a displacement vector Dl with the vertex on the left side is obtained (steps S70 and S70).
80). If the currently processed vertex is the leftmost vertex (p1 to p5), there is no vertex on the left, but otherwise, there is a vertex on the left. For example, if the currently processed vertex is p13, the vertex on the left is p8. Therefore, a displacement vector Dl between the position vector of p13 and the position vector of p8 is obtained.

Then, a difference (11−L1) between the natural length L1 of the magnitude 11 of the displacement vector D1 and the vertex on the left side is obtained, and a correction vector Al = (11−L1) · Dl / | Dl | is obtained. Here, Dl / | Dl | is a unit vector in the direction of the displacement vector D1 (step S90).

Then, Al is added to the velocity vector WVi.
It is assumed that WVi = WVi + Al (step S100).

Next, correction processing of the velocity vector Vi in relation to the vertex on the right side is performed.

If there is a vertex on the right side, a displacement vector Dr with the vertex on the left side is obtained (step S110,
S120). The vertex currently being processed is the rightmost vertex (p2
In the case of (1 to p25), the right adjacent vertex does not exist, but in other cases, the right adjacent vertex exists. For example, if the vertex currently being processed is p13, the vertex on the left is p18. Therefore, the position vector of p13 and p18
And the displacement vector Dr with respect to the position vector are obtained.

Then, the difference (lr-Lr) between the magnitude lr of the displacement vector Dr and the vertex on the right side is obtained, and the correction vector Ar = (lr-Lr) .Dr / | Dr | is obtained. Here, Dr / | Dr | is a unit vector in the displacement vector Dr direction (step S130).

Then, Ar is added to the velocity vector WVi.
It is assumed that WVi = WVi + Ar (step S140).

For example, when processing is performed in the order of p1 to p25, the vertex on the left side of the current frame is not yet determined when the correction processing of the velocity vector Vi in relation to the vertex on the left side is performed. Since there is no data, processing is performed based on the value of the previous frame. In the opposite case, when performing the correction processing of the velocity vector Vi in relation to the vertex on the right side, the processing is performed based on the value of the previous frame because the vertex on the right side of the current frame has not been determined yet. Will be.

3. Hardware Configuration Next, an example of a hardware configuration that can realize the present embodiment will be described with reference to FIG. In the system shown in the figure, a CPU 1000, a ROM 1002, a RAM 100
4. Information storage medium 1006, sound generation IC 1008, image generation IC 1010, I / O ports 1012, 1014
Are connected to each other via a system bus 1016 so that data can be transmitted and received therebetween. And the image generation IC 1010
Is connected to the display 1018, and the sound generation IC 10
08 is connected to a speaker 1020, and the I / O port 1
012 is connected to the control device 1022,
A communication device 1024 is connected to the O port 1014.

The information storage medium 1006 mainly stores programs, image data for expressing a display object, sound data, and the like. For example, in a home game system, a DV is used as an information storage medium for storing a game program and the like.
D, a game cassette, a CDROM, or the like is used. In the arcade game system, a memory such as a ROM is used. In this case, the information storage medium 1006 is stored in the ROM 100
It becomes 2.

The control device 1022 corresponds to a game controller, an operation panel, or the like, and is a device for inputting a result of a determination made by a player in accordance with the progress of a game to the system main body.

A program stored in the information storage medium 1006, a system program (initialization information of the system main body) stored in the ROM 1002, the control device 1
CPU 22 according to a signal or the like input by
00 controls the entire system and performs various data processing. R
The AM 1004 is storage means used as a work area or the like of the CPU 1000.
The given contents of the OM 1002 or the calculation results of the CPU 1000 are stored. A data structure having a logical configuration for realizing the present embodiment is constructed on the RAM or the information storage medium.

Further, this type of system includes a sound generation IC 1
008 and an image generation IC 1010 are provided so that game sounds and game images can be suitably output. The sound generation IC 1008 includes the information storage medium 1006 and the RO
An integrated circuit that generates game sounds such as sound effects and background music based on the information stored in M1002, and the generated game sounds are output by a speaker 1020. Further, the image generation IC 1010 includes a RAM 10
04, an integrated circuit that generates pixel information to be output to the display 1018 based on image information sent from the ROM 1002, the information storage medium 1006, and the like. Note that a so-called head-mounted display (HMD) can also be used as the display 1018.

The communication device 1024 exchanges various types of information used inside the image generation system with the outside. The communication device 1024 is connected to another image generation system to transmit and receive given information according to the game program. And for transmitting and receiving information such as game programs via a communication line.

The various processes described with reference to FIGS. 1 to 6 include an information storage medium 1006 storing information such as a program and data, a CPU 1000 operating based on information from the information storage medium 1006, an image generation IC 10
10 or a sound generation IC 1008 or the like.
Note that the processing performed by the image generation IC 1010, the sound generation IC 1008, and the like may be performed by software using the CPU 1000, a general-purpose DSP, or the like.

When this embodiment is applied to an arcade game system as shown in FIG. 1, a CPU, a built-in system board (circuit board) 1106,
An image generation IC, a sound generation IC, and the like are mounted. Then, information for executing (realizing) the processing of the present embodiment (means of the present invention) is stored in a semiconductor memory 1108 which is an information storage medium on the system board 1106. Hereinafter, this information is referred to as storage information.

FIG. 8A shows an example in which the present embodiment is applied to a home game system. The player enjoys the game by operating the game controllers 1202 and 1204 while watching the game image projected on the display 1200. In this case, the stored information is stored in a DVD 1206, which is an information storage medium detachable from the main system,
It is stored in a memory card 1208, 1209, or the like.

FIG. 8B shows a host device 1300 and a terminal 1304-1 connected to the host device 1300 via a communication line (small network such as LAN or wide area network such as the Internet) 1302. ~
An example in the case where the present embodiment is applied to an image generation system including the image processing device 1304-n will be described. In this case, the stored information is stored in the information storage medium 1 such as a magnetic disk device, a magnetic tape device, or a semiconductor memory that can be controlled by the host device 1300.
306. Terminals 1304-1 to 1304-n
Has a CPU, an image generation IC, and a sound processing IC, and can generate a game image and a game sound in a stand-alone manner.
A game program or the like for generating a game sound is transmitted to the terminal 1.
It is delivered to 304-1 to 1304-n. On the other hand, if it cannot be generated stand-alone, the host device 1300 generates a game image and a game sound, and transmits them to the terminals 1304-1 to 1304-1.
1304-n and output at the terminal.

In the case of the configuration shown in FIG. 8B, the processing according to the present invention may be performed separately between the host device (server) and the terminal. Further, the storage information for implementing the present invention may be distributed and stored in an information storage medium of a host device (server) and an information storage medium of a terminal.

The terminal connected to the communication line may be a home game system or an arcade game system. When the arcade game system is connected to a communication line, a portable information storage that can exchange information with the arcade game system and can exchange information with the home game system. It is desirable to use a device (memory card, portable game machine).

The present invention is not limited to the embodiment described above, and various modifications can be made.

For example, in the present embodiment, the case where the target object is a curtain has been described as an example, but the present invention is not limited to this. For example, any method may be used as long as an image is generated when an object that deforms without changing its surface area, such as cloth, paper, or a string, is wavy due to an impact.

The method of giving the displacement and the method of correcting the displacement are not limited to the case of the present embodiment.

In the present embodiment, the case where the primitive surface is a polygon surface has been described as an example, but the present invention is not limited to this. For example, the primitive surface may be a free-form surface or the like.

In the present embodiment, a bullet was taken as an example of an impact applied to an object. However, the present invention is not limited to this.

The present invention is applicable to various games other than the gun game (shooting games other than the gun game, fighting games, robot fighting games, sports games, competition games, role playing games, music playing games, dance games, etc.). it can.

The present invention also provides various images such as a business game system, a home game system, a large attraction system in which many players participate, a simulator, a multimedia terminal, an image generation system, and a system board for generating game images. Applicable to generation systems.

[Brief description of the drawings]

FIG. 1 is a diagram illustrating a configuration example when the present embodiment is applied to an arcade game system.

FIG. 2 is an example of a block diagram of an image generation system according to the embodiment.

FIGS. 3A to 3H are diagrams for explaining how a curtain appearing in a game image of the present embodiment undulates.

FIG. 4 is a diagram for describing an example of a process of generating an image in which a curtain is wavy by an impact in the present embodiment.

FIG. 5 is a diagram for describing an example of a process of generating an image in which a curtain is wavy due to an impact in the present embodiment.

FIG. 6 is a flowchart for explaining an operation example of the present embodiment.

FIG. 7 is a diagram illustrating an example of a hardware configuration capable of realizing the embodiment;

FIGS. 8A and 8B are diagrams showing examples of various types of systems to which the present embodiment is applied.

[Explanation of symbols]

 REFERENCE SIGNS LIST 100 processing unit 110 game operation unit 120 displacement operation unit 130 operation unit 140 storage unit 142 object information storage unit 150 information storage medium 160 image generation unit 162 display unit 170 sound generation unit 172 sound output unit 174 communication unit 176 I / F unit 180 memory card

 ──────────────────────────────────────────────────続 き Continued on the front page F term (reference) 2C001 AA00 AA07 BB00 BB05 BC00 BC03 BC05 CA01 CA09 CB01 CB06 CC02 CC08 5B050 AA10 BA08 CA07 EA13 EA24 EA28 FA02 FA09 5B080 AA10 AA13 BA07

Claims (14)

[Claims] 1. An image generation system for generating an image of an object composed of a primitive surface, comprising: a displacement calculating unit configured to calculate a displacement of a surface specific point that specifies a primitive surface generated based on an impact applied to the object. And an image generating means for generating an image of the object based on the calculated displacement of the plane specific point, wherein the displacement calculating means detects the impact applied to the object, and the magnitude and direction of the applied impact Means for displacing the plane specific point in accordance with the distance from the impact position of the object to the plane specific point; and applying a displacement for keeping the distance between adjacent plane specific points constant or within a predetermined range. An image generation system, comprising: means for applying a displacement for returning a plane specific point to a reference position. 2. An image generation system for generating an image of an object composed of primitive surfaces, wherein an impact applied to the object is detected, and the vicinity of the impact position of the object is waved according to the magnitude and direction of the impact. Means for performing an operation for temporally changing the positional relationship of a surface specific point for specifying a primitive surface, and image generating means for generating an image of a wavy object based on the previous surface specific point. Characteristic image generation system. 3. The image generation system according to claim 2, wherein the object undulates in a predetermined axial direction. 4. An acceleration vector for returning to a reference position and an acceleration vector calculated based on a direction and a magnitude of an impact and a distance from the impact position at the specific point of the plane, according to claim 1, Given, and calculates at least one of the position vector and the velocity vector of the plane specific point based on the given acceleration vector, and the position vector and the velocity vector are set so that the distance to the adjacent plane specific point is a fixed distance or within a predetermined range. Means for correcting at least one of the following. 5. The image generation system according to claim 1, further comprising means for attenuating, with time, a velocity vector acting on the specific point on the surface or a displacement amount of the specific point on the surface. 6. The image generation system according to claim 1, wherein the specific points are distributed in a grid at predetermined intervals. 7. The image generation system according to claim 1, wherein an image of an object including a plurality of polygon surfaces having the surface specific point as a vertex is generated. 8. An information storage medium which is readable by a computer and stores information for controlling an image generation system for generating an image of an object constituted by a primitive surface, the information storage medium being based on an impact applied to the object. A displacement calculating means for calculating a displacement of a surface specific point that specifies the generated primitive surface; and an image generating means for generating an image of the object based on the calculated displacement of the specific surface. Means for detecting an impact applied to the object, and displacing the surface specific point in accordance with the magnitude and direction of the applied impact and the distance from the impact position of the object to the specific surface; Means for giving a displacement to keep the distance between specific points within a certain or predetermined range, and giving a displacement for returning the specific point to the reference position And an information storage medium containing information necessary for realizing the following. 9. A computer-readable information storage medium storing information for controlling an image generation system that generates an image of an object composed of primitive surfaces, wherein an impact applied to the object is detected. Means for performing an operation for temporally changing the positional relationship of a surface specific point for specifying a primitive surface such that the vicinity of the impact position of the object is wavy according to the magnitude and direction of the impact; and And an image generating means for generating an image of the wavy object based on the information storage medium. 10. The information storage medium according to claim 9, wherein the object includes information necessary for waving in a predetermined axial direction. 11. The acceleration vector for returning to the reference position according to any one of claims 8 to 10, wherein the acceleration vector calculated based on the direction and magnitude of the impact and the distance from the impact position and the acceleration vector for returning to the reference position are specified at the specific point. Given, and calculates at least one of the position vector and the velocity vector of the plane specific point based on the given acceleration vector, and the position vector and the velocity vector are set so that the distance to the adjacent plane specific point is a fixed distance or within a predetermined range. Means for correcting at least one of the following, and an information storage medium including information necessary for realizing: 12. The method according to claim 8, wherein information necessary for realizing means for attenuating a velocity vector acting on the specific point on the preceding plane or a displacement amount of the specific point on the preceding plane with time is included. Characteristic information storage medium. 13. The information storage medium according to claim 8, wherein the plane specific points are distributed in a grid at predetermined intervals. 14. The information according to claim 8, further comprising information necessary for generating an image of an object composed of a plurality of polygon surfaces having the surface specific point as a vertex. Storage medium.