JP2001043397A - Image generation system and information storage medium - Google Patents

Abstract

PROBLEM TO BE SOLVED: To generate a real image reflected with the position, size and direction of impulse with a little data amount and arithmetic load by operating the position, vector size and direction of impulse applied to an object and generating the image of a rotating object on the basis of these data. SOLUTION: When a bullet hits a door 720 as rotating object, the position, vector size and direction of impulse caused by the bullet are found. A component VD in the tangential direction of an impulse vector in respect to the rotation orbit of the door 720 is found. A force T for rotating the door 720 is found on the basis of a ratio between a reference length in a radial direction and a distance from a rotation center to the impulse position and the VD. An angular rotation acceleration (a) is found from the T and the resistance of air or the like and an angular rotation velocity V of this time is found from (a) and the angular rotation velocity of the last time. The rotation angle of this time is found from V and the rotation angle of the last time. On the basis of the found rotation angle, the door 720 is arranged and an image including the door 720 is generated.

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 door or a rotating chair that rotates when an impact such as a bullet is applied thereto.

For example, when a door, a rotating chair, or the like receives a bullet, a rotating operation at a different speed or size should be performed depending on the position where the bullet is received, the direction and the size of the bullet.

However, in the conventional image generation system, when a bullet hits a door or a rotating chair, only an image of a rotating operation prepared in advance is generated. For this reason, doors and rotating chairs in the game screen will perform the same rotation regardless of where the bullet hits and from which direction the bullet hits, and the game image will be monotonous with lack of arity I was

SUMMARY OF THE INVENTION The present invention has been made in view of such a conventional problem, and has as its object to reduce an image of an object which performs a rotating operation in accordance with a shock position and a magnitude and direction of a shock with a smaller data amount and a smaller calculation amount. An object of the present invention is to provide an image generation system and an information storage medium that can be realistically expressed by load.

[0007]

According to the present invention, when an impact vector is applied to an object for which a given rotation axis or rotation center is set, an impact position and an impact vector applied to the object are provided. Means for calculating, based on the distance between the impact position and the rotation axis or the center of rotation of the object and the shock vector, means for calculating rotation position determination information required to determine the rotation position of the object, Means for generating an image including an object arranged based on the rotation position determination information.

[0008] An information storage medium according to the present invention is an information storage medium usable by a computer, and includes information (a program or data, etc.) for realizing (executing) the above means. The program according to the present invention is a program usable by a computer (including a program embodied in a carrier wave),
It is characterized by including a processing routine for realizing (executing) the above means.

Here, the information necessary for determining the rotational position of the object may be a rotation angle from the reference position or the position of the previous frame, a rotation speed, a rotation acceleration, or the like.

According to the present invention, the position and magnitude of the impact vector and the magnitude of the impact vector applied to the object can be calculated in real time, and an image of the rotating object can be generated based on the calculated position and magnitude. It is possible to generate a realistic image that performs rotation reflecting the pod direction.

Further, the image generation system, the information storage medium and the program according to the present invention are arranged so that the object is moved around the rotation axis or the rotation center based on a preset distance between the rotation axis or the rotation center and the impact position and a shock vector. It is characterized in that a torque to be rotated is obtained, and rotation position determination information is calculated based on the torque.

According to the present invention, since a rotation axis or a rotation center is set in advance for a rotatable object, a torque corresponding to an impact position can be easily calculated. For this reason, it is possible to generate an image with high reality reflecting the magnitude and direction of the impact plate or impact with a small calculation load.

The image generation system, the information storage medium, and the program according to the present invention limit the rotation range of the object so that the rotation range of the object falls within the rotation range set according to the rotation characteristics of the object. It is characterized by the following.

The rotation range may be limited by, for example, adjusting the rotation angle or adjusting the rotation angular velocity.

The present invention is convenient when an image of an object that rotates within a predetermined range, such as a door, is generated.

Further, the image generation system, the information storage medium and the program according to the present invention are characterized in that, when there is an obstacle in the rotation range of the object, the rotation range of the object is limited to a range not overlapping with the obstacle. I do.

The rotation range may be limited by, for example, adjusting the rotation angle or adjusting the rotation angular velocity. The obstacle may be a stationary object or a moving object.

According to the present invention, it is possible to generate an image whose rotation is restricted by an obstacle, so that a more realistic image of rotation can be generated.

Further, the image generation system, the information storage medium, and the program according to the present invention are characterized in that, when the rotation angle of the object reaches a limit range, the rotation direction of the object is changed so as to rotate in the opposite direction. .

According to the present invention, it is possible to generate an image of an object whose rotation is restricted and which rotates in the opposite direction. Further, it is possible to generate an image of an object reciprocating like a pendulum within the limited range.

Further, the image generation system, the information storage medium, and the program according to the present invention make it possible to attenuate the magnitude of the rotational angular velocity of the object based on at least one of the lapse of the game time and the occurrence of a collision with another object. Features.

The rotational motion of an object in the real world is attenuated by various resistance elements such as air resistance and resistance due to collision. According to the present invention, by attenuating the rotational angular velocity of the object with the lapse of the game time, it is possible to easily represent a state in which each rotational velocity attenuates due to air resistance or the like.

Further, by attenuating the rotational angular velocity of the object due to the occurrence of an impact, it is possible to easily express a state in which the rotation is attenuated by the impact friction.

By setting the attenuation ratio to a predetermined value in advance, the calculation load can be further reduced.

[0025]

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 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 for 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 function of the sound generation section 170 is as follows.
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).

Information for realizing the processing of the present invention (this 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.

Further, part 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 instructions from the processing unit 100 and 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 hit check section 112, an impact information calculation section 114, and a rotational position determination information calculation section 116.

Here, the hit check unit 112 performs a hit check process for checking whether or not a shot fired by the player has hit an object using a gun-type controller.

When a shock vector is applied, the shock information calculation unit 114 performs a process of calculating a shock position and a shock vector applied to the object.

The rotation position determination information calculation section 116 determines rotation position determination information necessary for determining the rotation position of the object based on the distance between the impact position and the rotation axis or rotation center of the object and the impact vector. Is performed.

It should be noted that the image painter section 160 generates an image including the arranged objects based on the rotation position determination information.

Here, a torque for rotating the object around the rotation axis or the rotation center is determined based on a preset distance between the rotation axis or the rotation center and the impact position and a shock vector, and the rotation position determination information is determined based on the torque. May be calculated.

The rotation range of the object may be limited so that the rotation range of the object falls within the rotation range set in accordance with the rotation characteristics of the object. If there is, the rotation range of the object may be limited to a range that does not overlap with the obstacle. The rotation direction of the object may be changed so as to rotate in the opposite direction when the rotation angle of the object reaches the limit range.

The magnitude of the rotational angular velocity of the object may be attenuated based on at least one of the lapse of the game time and the occurrence of a collision with another object.

Note that the image generation system of the present embodiment
A system dedicated to the single player mode in which only one player can play, or a system including not only such a single player mode but also a multiplayer mode in which a plurality of players can play, may be used.

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 operation of the present embodiment The first feature of the present embodiment is that, when an impact vector is applied to an object for which a given rotation axis or rotation center is set, the impact position and the rotation axis of the object are set. Alternatively, the rotation angle of the object is calculated based on the distance from the rotation center and the magnitude and direction of the impact vector.

FIG. 3 is an example of a game image according to the present embodiment, and shows a state where a bullet hits near the locker door 720 at 710. In the present embodiment, when an impact such as a bullet is applied to an object that rotates around a predetermined axis 730 like a door, the following is provided in order to easily provide a more realistic image with a small calculation load. Processing is in progress.

A method of calculating the rotation angle when the door is rotated by receiving a bullet will be described with reference to FIGS.

FIG. 4 is a diagram for explaining the required door rotation angle. The door 210 is configured to be rotatable around a rotation shaft 212 within a predetermined range. Here, considering the local coordinate system (x, y, z) of the door such that the rotation axis 212 coincides with the y-axis direction, the rotation of the door is given by a rotation angle around the y-axis.

FIG. 5 is a diagram for explaining the relationship between the impact vector due to the bullet and the force contributing to the rotation of the door. FIG. 4 is an xz plan view showing a state where a bullet 250 hits the door 210. The reason for considering the xz plane in this way is that, as described with reference to FIG. 4, the door rotates about the z axis as the rotation axis, so that the force in the z axis direction does not contribute to the rotation.

Here, 230 is a bullet 2 on the xz plane.
Reference numeral 50 denotes a hit position, that is, an impact position, and 240 denotes an xz component of an impact vector representing the magnitude and direction of a force applied to the door by the impact. In the present embodiment, the rotation trajectory 2 of the door 210 of the xz component 240 of the impact vector
An operation for obtaining a component 242 (VD) in the tangential direction to 60 is performed.

FIG. 6 is a diagram for explaining the relationship between the distance l of the impact position 230 from the rotation center 212 and the force T for rotating the door. Generally, the torque required to rotate an object increases in proportion to the magnitude of the applied force and the distance from the center of rotation. Therefore, for example, 310 and 3 in FIG.
As compared with the case where the same magnitude of force is applied to 20, the latter has a larger torque.

The force T for rotating the rotation of the door is such that the reference length in the radial direction (the length from the rotation axis to the end of the door) is L, the xz component of the shock vector is VD, and the rotation center 212 and the shock position 230 are different. The distance is obtained as l and is obtained as follows.

T = VD × l / L (1) Here, if the force for rotating the door is F and the proportionality constant is k, F is expressed by the following equation as a function of T.

F (T) = kT ‥‥ (2) In general, force is represented by the product of mass and acceleration, so that the rotational angular acceleration aθ _y of the door can be represented by the following equation.

Aθ _y = F (T) + F (v) (3) where F (v) is a resistance of air or the like.

For simplicity of explanation, aθ_yOne frame
Door in the front frame
Vθ_{y (n-1)}, This time the rotational angular velocity of the door
Vθ _{y (n)}Then, the following equation is established.

Vθ _{y (n)} = Vθ _{y (n−1)} + aθ _y ‥‥ (4) FIG. 7 is a diagram for explaining the relationship between the rotation start position and the rotation angles of the _(n−1) th frame and the nth frame. FIG. 410
Is the door rotation start position, 420 is the door position of the (n-1) th frame, and 430 is the door position of the nth frame.

As shown in FIG. 7, the rotation angle of the door 420 of the (n-1) th frame from the rotation start position 410 is V
θ _{y (n−1)} , and the rotation angle of the _n- th frame is Vθ _{y (n)} .
The following equation holds.

Sθ _{y (n)} = Sθ _{y (n−1)} + Vθ _y ‥‥ (5) Here, n = 1 in the next frame hit by the bullet, and the following expressions hold for (4) and (5). .

[0069] _{Vθ y (1) = aθ y} ‥‥ (6) Sθ y (1) = Vθ y ‥‥ (7) in the next frame that bullet hits Therefore Sθ _{y (1)} = aθ
_y, and the door is to be disposed at a position rotated by A.theta. _y.

By doing so, it is possible to generate an image of the door that rotates reflecting the impact position and the magnitude and direction of the impact vector.

From the next frame, if no new impact is applied, F (T) = 0 in (3).
Therefore, aθ _y = F (v). Since this is air resistance, Vθy ₍₂₎ = Vθy ₍₁₎ + obtained in (4)
aθ _{y satisfies} Vθ _{y (1)} > Vθ _{y ( 2)} . Since the same applies to the following frames, Vθy ₍₁₎ >‥> Vθy _(n−1) > Vθy _(n) , and the angular velocity of rotation gradually decreases. Therefore,
A state in which the rotation of the door, which was initially strong, gradually attenuates can be easily represented on the game screen.

Next, an example in which the rotation range of the object is limited in this embodiment will be described. In the present embodiment, since the rotation angle is calculated on the door, it is unnatural to rotate in the range of 360 degrees. Therefore, the rotation angle is limited so that the door makes a rotational movement within a predetermined range.

FIG. 8 is a diagram for explaining a calculation example of the rotation angle when limiting the rotation range of the door. It is assumed that the rotation range of the door is limited between 510 and 520. Taking a reference position 510, when the rotation angle of the door 210 from the reference position 510 and _{Sθ y, L (-) ≦} Sθ y ≦ L (+) ‥‥ (8) Since the reference position is taken as 510 L (-) = 0, also determine the value of S.theta _y to satisfy L (+) = 90 as (8). When the rotation angle S.theta _y rotating in the direction of the door 210 is 530 in the present embodiment reaches the L (+), it is rotated in the direction of the inverted 540 in the opposite direction. The rotation angle S.theta _y is L again (-) reaches to reverse the rotation direction to 560 from 550. Assuming that the rotation angle before inversion is Vθ _y and the angular velocity after inversion is Vθ _y ′, in the present embodiment, the angular velocity after inversion is calculated as Vθ _y ′ as in the following equation.

Vθ _y ′ = hVθ _y (−1 <h <0) ‥‥ (9) By setting −1 <h <0, the rotation angular velocity can be reduced due to the reversal of the rotation direction and the friction at the time of the reversal. The expression is realized.

Next, an example in which the rotation angle of the object is limited so as to avoid overlapping with an obstacle in the rotation range of the object will be described.

FIG. 9 is a diagram for explaining an example of limiting the rotation range when two doors are close to each other and each rotation interferes with the other rotation.

610 and 620 are P₁, P_TwoTimes
FIG. 5 is a view of a door that can be rotated as a pivot when viewed from the y-axis direction.
You. Rotation axis P₁, P_TwoTo the edge of the door
R₁, R_TwoAnd 612 and 622 are rotation axes respectively
P₁, P_TwoRadius R around₁, R _TwoRepresents the circle of
This range is the range in which each door is to be rotated.

However, since the distance between P ₁ and P ₂ is shorter than R ₁ + R _2, points that interfere with each other are generated. Theoretically 2
Assuming that the two doors 610 and 620 are rotatable 360 degrees, points 630 and 640 where the two doors intersect (hereinafter referred to as “intersections”) are generated.
In a portion surrounded by an arc including 0, the rotation of each door is restricted.

Therefore, in this embodiment, the arrangement position of each door is calculated from the theoretical rotation angle of the next frame. And determining the intersection point P ₃ of the straight line 614 and 624 extended in the longitudinal direction from each door. The distance between P ₁ and P ₃ is L ₁ ,
Assuming that the distance between P ₂ and P ₃ is L ₂ , if L ₁ ≦ R ₁ and L ₂ ≦ R ₂ hold, the rotational angular velocity of each door is corrected. That is, if the theoretical values of the rotation speed of each door are V ₁ and V ₂ , and the corrected rotation angular velocities are V ₁ ′ and V ₂ ′, V ₁ ′ = h ₁ × V ₁ (−1 <h ₁ <0) ‥‥ (10) V ₂ ′ = h ₂ × V ₂ (−1 <h ₂ <0) ‥‥ (11) In this way, in the next frame, the rotation direction of each door is reversed, and the angular velocity Also decays. Therefore, it is possible to generate an image in which the rotation of the door is restricted by the obstacle and is reversed, and the speed is attenuated due to friction at the time of the reversal.

FIGS. 10 to 13 are flow charts for explaining an operation example of the present embodiment.

First, an outline of the operation of the present embodiment will be described with reference to FIG. In the present embodiment, a process of calculating a rotation angle necessary for generating an image of the next frame is performed for each frame (steps S10 to S30), and objects are arranged based on the obtained rotation angle to generate an image including the object. Is performed (step S40).

When obtaining the rotation angle, first, the rotation angle of the object (hereinafter, referred to as "theoretical value of the rotation angle") is calculated assuming that there is no restriction on the rotation range (step S10). Then, processing is performed to correct the theoretical value so that the rotation angle falls within the rotation range set according to the rotation characteristics of the object (step S20).

Then, rotation angle correction processing for avoiding overlap with an obstacle in the rotation range of the object is performed (step S30).

Next, referring to FIG. 11, step S in FIG.
A detailed example of the process of No. 10 will be described. Here, a door will be described as an example of a rotating object.

It is determined whether or not a bullet hits the door (step S110). If a hit occurs, a force (T) for rotating the door generated by the hit is obtained as follows. (Steps S130 to S160).

First, the impact position by the bullet, the magnitude and direction of the impact vector are determined (step S130). Then, as described with reference to FIG. 5, a component (VD) of the battle direction with respect to the rotation trajectory of the door is obtained from the xz components of the impact vector (step S140). As described with reference to FIG. 6, the ratio (l / L) of the reference length (L) in the radial direction and the distance (l) from the rotation center to the impact position is obtained (step S).
150). Then, as shown in equation (1) in the text, VD
Then, a force (T) for rotating the door is obtained based on the above and 1 / L (step S160).

If no bullet has hit the door, T = 0 is set (step S120).

Next, as shown by the equations (2) and (3) in the text, the rotational angular velocity aθ _{y is} obtained from T and the resistance (F (v)) of air or the like.
Is obtained (step S170).

Next, as shown by equation (4) in the text, aθ
_The current rotational angular velocity Vθy _(n) is obtained from _y and the previous rotational angular velocity Vθy _(n-1) (step S180).

Then, as shown by equation (5) in the text, V
From θ _y and the previous rotation angle Sθ _{y (n−1)} , the current rotation angle Sθ
The theoretical value of _{y (n)} is obtained (step S190).

Next, referring to FIG. 12, step S in FIG.
A detailed example of the process 20 will be described.

If the theoretical value of the rotation angle Sθy _(n) is not within the limit range set based on the closing range of the door, the rotation angle is corrected so as to be within the limit range (step S2).
20).

Then, as shown by equation (9) in the text,
A value obtained by multiplying the previous rotational angular velocity by a negative restitution coefficient is set as a new rotational angular velocity (step S230).

Next, referring to FIG. 13, step S in FIG.
A detailed example of the process 30 will be described.

As described with reference to FIG. 9, when there is an obstacle such as another door within the rotation range, the rotation angle is corrected so that the door and the obstacle do not overlap (step S320).

Then, as shown by the equations (10) and (11) in the text, a value obtained by multiplying the previous rotational angular velocity by a negative restitution coefficient is set as a new rotational angular velocity (step S330).

3. Hardware Configuration Next, an example of a hardware configuration capable of realizing 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 10
04, 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 objects to be displayed, 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, and 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.

The program stored in the information storage medium 1006, the 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 13 are performed by an information storage medium 1006 storing information such as programs and data, a CPU 1000 operating based on the 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. 15A 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. 15B shows a host device 1300,
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 a case where the present embodiment is applied to an image generation system including the image generation systems 1 to 1304-n will be described. In this case, the storage information is
For example, an 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. 15B, the processing of the present invention may be performed in a distributed manner 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, but can be variously modified.

For example, in the present embodiment, an example has been described in which an object whose rotation range is limited to a predetermined range, such as a door, is described, but the present invention is not limited to this. As in the case of a rotating chair shown in FIG. 16, an object that can be rotated 360 degrees may be used. Further, for example, a T-shaped object such as a desk lamp may be rotated by receiving an impact.

Further, in this embodiment, the case where the rotation axis is parallel to the Y axis has been described as an example, but the invention is not limited to this. The rotation axis may not be parallel to any of the three axes.

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.

In the present embodiment, an example has been described in which an object is rotated around a rotation axis, but the present invention is not limited to this. The present invention is also applicable to a rotation operation of an object that rotates around a rotation center.

In the present embodiment, the rotation operation in the case of one impact has been described, but the present invention is not limited to this. The present invention is also applicable to a rotation operation when a plurality of impacts are continuously applied.

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.

FIG. 3 is an example of a game image of the embodiment.

FIG. 4 is a diagram for explaining a rotation angle of a door.

FIG. 5 is a diagram for explaining a relationship between an impact vector due to a bullet and a force contributing to rotation of a door.

FIG. 6 is a diagram for explaining a relationship between a distance 1 from a rotation center of an impact position and a force T for rotating a door.

FIG. 7 is a diagram for explaining a relationship between a rotation start position and rotation angles of the (n-1) th frame and the nth frame.

FIG. 8 is a diagram for explaining a calculation example of a rotation angle when limiting a rotation range of a door.

FIG. 9 is a diagram for describing an example of limiting a rotation range when two doors are close to each other and each rotation interferes with the other rotation.

FIG. 10 is a flowchart for explaining an operation example of the present embodiment.

FIG. 11 is a flowchart for explaining an operation example of the present embodiment;

FIG. 12 is a flowchart for explaining an operation example of the present embodiment;

FIG. 13 is a flowchart for explaining an operation example of the present embodiment.

FIG. 14 is a diagram illustrating an example of a hardware configuration capable of realizing the present embodiment.

FIGS. 15A and 15B are diagrams showing examples of various types of systems to which the present embodiment is applied; FIGS.

FIG. 16 is an example of another object to which the present invention can be applied.

[Explanation of symbols]

 Reference Signs List 100 processing unit 110 game calculation unit 112 hit check unit 114 impact information calculation unit 116 rotation position determination information calculation unit 130 operation unit 140 storage unit 150 information storage medium 160 image generation unit 162 display unit 170 sound generation unit 172 sound output unit 174 communication Section 176 I / F section 180 Memory card

Claims (12)

[Claims] 1. A means for calculating an impact position and an impact vector applied to an object having a given rotation axis or rotation center when the impact vector is applied to the object, an impact position and the object Means for calculating rotation position determination information necessary to determine the rotation position of the object based on the distance from the rotation axis or rotation center and the shock vector, and arranged based on the rotation position determination information. Means for generating an image including an object; and an image generation system. 2. The method according to claim 1, wherein a torque for rotating the object around the rotation axis or the rotation center is determined based on a preset distance between the rotation axis or the rotation center and the impact position and a shock vector. An image generation system that calculates rotation position determination information based on the rotation position. 3. The object according to claim 1, wherein the rotation range of the object is limited such that the rotation range of the object falls within a rotation range set according to the rotation characteristics of the object. Image generation system. 4. The image generation system according to claim 1, wherein when there is an obstacle in the rotation range of the object, the rotation range of the object is limited to a range that does not overlap with the obstacle. . 5. The image generation system according to claim 1, wherein the rotation direction of the object is changed so as to rotate in the opposite direction when the rotation angle of the object reaches a limit range. 6. The image according to claim 1, wherein the magnitude of the rotational angular velocity of the object is attenuated based on at least one of a lapse of a game time and occurrence of a collision with another object. Generation system. 7. An information storage medium usable by a computer, wherein when an impact vector is applied to an object for which a given rotation axis or center of rotation is set, an impact position and an impact vector applied to the object Means for calculating the rotational position determination information required to determine the rotational position of the object, based on the distance between the impact position and the rotation axis or rotation center of the object and the impact vector, Means for generating an image including an object arranged based on the rotation position determination information; and information for realizing the following. 8. The method according to claim 7, wherein a torque for rotating the object around the rotation axis or the rotation center is determined based on a preset distance between the rotation axis or the rotation center and the impact position and a shock vector. An information storage medium including information for calculating rotation position determination information based on the information. 9. The information according to claim 7, wherein information for restricting a rotation range of the object is set so that the rotation range of the object falls within a rotation range set in accordance with the rotation characteristics of the object. An information storage medium characterized by including. 10. The information processing apparatus according to claim 7, further comprising information for restricting a rotation range of the object to a range that does not overlap with the obstacle when the rotation range of the object includes an obstacle. Information storage medium. 11. The method according to claim 7, further comprising information for changing a rotation direction of the object so that the object rotates in a reverse direction when the rotation angle of the object reaches a limit range. Information storage medium. 12. The method according to claim 7, further comprising information for attenuating the magnitude of the rotational angular velocity of the object based on at least one of a lapse of a game time and occurrence of a collision with another object. An information storage medium characterized by the following.