JP4301469B2 - 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

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to an image generation system and an information storage medium.
[0002]
[Background Art and Problems to be Solved by the Invention]
2. Description of the Related Art Conventionally, an image generation system that generates an image that can be seen from a given viewpoint in an object space that is a virtual three-dimensional space is known, and is popular as being able to experience so-called virtual reality. 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 enemy characters (screened on the screen). Enjoy 3D games by shooting target objects such as objects.
[0003]
In such an image generation system, it is an important technical problem to generate a more realistic image in order to improve the player's virtual reality. Therefore, it is desirable to be able to express more realistically what is rotated when an impact such as a bullet is applied, such as a door or a rotating chair.
[0004]
For example, when a door or a rotating chair receives a bullet, it should rotate at different speeds and sizes depending on the location of the bullet and the direction and size of the bullet.
[0005]
However, in conventional image generation systems, when a bullet hits a door or a rotating chair, only an image of a rotation operation prepared in advance is generated. For this reason, the doors and rotating chairs in the game screen will rotate the same regardless of where the bullet hits, and from what direction the bullet hits, making the game image monotonous lacking arity. It was.
[0006]
The present invention has been made in view of such a conventional problem, and an object of the present invention is to realistically display an image of an object that rotates according to the impact position and the magnitude and direction of the impact with a smaller amount of data and a calculation load. It is an object of the present invention to provide an image generation system and an information storage medium that can be expressed as follows.
[0007]
[Means for Solving the Problems]
When an impact vector is applied to an object having a given rotation axis or center of rotation, the image generation system of the present invention includes means for calculating the impact position and the impact vector applied to the object, the impact position, Means for calculating rotational position determination information necessary for determining the rotational position of the object based on the distance to the rotational axis or rotational center of the object and the impact vector, and arrangement based on the rotational position determination information And means for generating an image including the formed object.
[0008]
The information storage medium according to the present invention is an information storage medium that can be used by a computer, and includes information (program or data) for realizing (executing) the above means. A program according to the present invention is a program (including a program embodied in a carrier wave) usable by a computer, and includes a processing routine for realizing (executing) the above means.
[0009]
Here, the information necessary for determining the rotation position of the object may be a rotation angle from the reference position or the position of the previous frame, or a rotation speed, a rotation acceleration, or the like.
[0010]
According to the present invention, since the impact position and the magnitude and direction 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 these, the impact position and the magnitude and direction of the impact can be determined. It is possible to generate a realistic image that performs the reflected rotation.
[0011]
The image generation system, the information storage medium, and the program according to the present invention include a torque for rotating the object around the rotation axis or the rotation center based on a predetermined distance between the rotation axis or the rotation center and the impact position and an impact vector. The rotational position determination information is calculated based on the torque.
[0012]
In the present invention, since a rotation axis or a rotation center is set in advance for an object having a possibility of rotation, a torque corresponding to the impact position can be easily calculated. Therefore, it is possible to generate a high-reality image reflecting the impact plate and the magnitude and direction of the impact with a small calculation load.
[0013]
Further, 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 a rotation range set according to the rotation characteristic of the object. And
[0014]
The limitation of the rotation range may be, for example, a method of adjusting the rotation angle or a method of adjusting the rotation angular velocity.
[0015]
The present invention is convenient when generating an image of an object that rotates within a predetermined range, such as a door.
[0016]
The image generation system, information storage medium, and 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 that does not overlap with the obstacle.
[0017]
The limitation of the rotation range may be, for example, a method of adjusting the rotation angle or a method of adjusting the rotation angular velocity. The obstacle may be a stationary object or a moving object.
[0018]
According to the present invention, an image whose rotation is restricted by an obstacle can be generated, and thus a more realistic rotation image can be generated.
[0019]
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 reverse direction.
[0020]
According to the present invention, it is possible to generate an image of an object that is restricted in rotation and rotates in the opposite direction. In addition, an image of an object that reciprocates like a pendulum within a limited range can be generated.
[0021]
The image generation system, information storage medium, and program according to the present invention are characterized by attenuating the magnitude of the rotational angular velocity of an object based on at least one of the passage of game time and the occurrence of a collision with another object. .
[0022]
The rotational motion of an object in the real world is attenuated by various resistance elements such as air resistance and collision resistance. According to the present invention, it is possible to easily represent a state in which each rotation speed is attenuated by air resistance or the like by attenuating the rotation angular velocity of the object as the game time elapses.
[0023]
In addition, by attenuating the rotational angular velocity of the object due to the occurrence of an impact, it is possible to simply express how the rotation is attenuated by impact friction.
[0024]
The calculation load can be further reduced by setting the attenuation ratio to a predetermined value in advance.
[0025]
DETAILED DESCRIPTION OF THE INVENTION
Hereinafter, preferred embodiments of the present invention will be described with reference to the drawings. Hereinafter, 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. However, the present invention is not limited to this and can be applied to various games.
[0026]
1. Configuration FIG. 1 shows a configuration example when the present embodiment is applied to an arcade game system.
[0027]
The player 500 has a gun-type controller (shooting device in a broad sense) 502 that is made by imitating a real machine gun. Then, a gun game is enjoyed by shooting with a target object such as an enemy character (object in a broad sense) displayed on the screen 504.
[0028]
In particular, when the gun-type controller 502 of this embodiment pulls a trigger, virtual shots (bullets) are automatically fired at high speed. Therefore, it is possible to give the player a virtual reality as if it were shooting a real machine gun.
[0029]
The shot hit position (landing position) may be detected by providing an optical sensor in the gun-type controller 502 and detecting the scanning light of the screen using this optical sensor. (Laser light) may be emitted, and the irradiation position of this light may be detected by using a CCD camera or the like.
[0030]
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 may include the processing unit 100 and the storage unit 140, 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, etc.) are optional components. Can do.
[0031]
Here, the processing unit 100 performs various processes such as control of the entire system, instruction instruction to each block in the system, and game calculation, and functions thereof are a CPU (CISC type, RISC type), DSP. Alternatively, it can be realized by hardware such as an ASIC (gate array or the like) or a given program (game program).
[0032]
The operation unit 130 is for the player to input operation data, and the function can be realized by hardware such as the gun-type controller 502, lever, button, and the like in FIG.
[0033]
The storage unit 140 serves as a work area such as the processing unit 100, the image generation unit 160, the sound generation unit 170, the communication unit 174, and the I / F unit 176, and its functions can be realized by hardware such as a RAM.
[0034]
An information storage medium (storage medium usable by a computer) 150 stores information such as programs and data, and functions thereof are an optical disk (CD, DVD), a magneto-optical disk (MO), a magnetic disk, and a hard disk. It can be realized by hardware such as a magnetic tape or a semiconductor memory (ROM). The processing unit 100 performs various processes of the present invention (this embodiment) based on 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 (this embodiment).
[0035]
Part or all of the information stored in the information storage medium 150 is transferred to the storage unit 140 when the system is powered on. Information stored in the information storage medium 150 includes program code, image information, sound information, shape information of display objects, table data, list data, player information, and processing of the present invention. It includes at least one of information for instructing, information for performing processing in accordance with the instruction, and the like.
[0036]
The image generation unit 160 generates various images in accordance with instructions from the processing unit 100 and outputs them to the display unit 162. The function of the image generation unit 160 is hardware such as an image generation ASIC, CPU, or DSP, It can be realized by a given program (image generation program) and image information.
[0037]
The sound generation unit 170 generates various sounds in accordance with instructions from the processing unit 100 and outputs them to the sound output unit 172. The function of the sound generation unit 170 is a hardware such as a sound generation ASIC, CPU, or DSP. Or a given program (sound generation program) and sound information (waveform data, etc.).
[0038]
The communication unit 174 performs various controls for communicating with an external device (for example, a host device or other image generation system), and functions as a hardware such as a communication ASIC or a CPU. Alternatively, it can be realized by a given program (communication program).
[0039]
Note that information for realizing the processing of the present invention (this embodiment) may be 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. Use of such an information storage medium of the host device (server) is also included in the scope of the present invention.
[0040]
Further, part or all of the functions of the processing unit 100 may be realized by the functions of the image generation unit 160, the sound generation unit 170, or the communication unit 174. Alternatively, part or all of the functions of the image generation unit 160, the sound generation unit 170, or the communication unit 174 may be realized by the function of the processing unit 100.
[0041]
The I / F unit 176 serves as an interface for exchanging information with a memory card 180 (in a broad sense, a portable information storage device including a portable game machine) according to an instruction from the processing unit 100. This function can be realized by a slot for inserting a memory card, a controller IC for data writing / reading, and the like. In the case where information exchange with the memory card 180 is realized using radio waves such as infrared rays, the function of the I / F unit 176 can be realized by hardware such as a semiconductor laser and an infrared sensor.
[0042]
The processing unit 100 includes a game calculation unit 110.
[0043]
Here, the game calculation unit 110 accepts coins (costs), sets various modes, progresses the game, sets the selection screen, and positions and rotation angles (X, Y or Z-axis rotation angle), viewpoint position and line-of-sight angle determination process, object motion playback or generation process, object placement process in object space, hit check process, game results (results, results) Various game calculation processes such as a calculation process, a process for a plurality of players to play in a common game space, or a game over process, operation data from the operation unit 130, data from the memory card 180, game program, etc. Based on.
[0044]
The game calculation unit 110 includes a hit check unit 112, an impact information calculation unit 114, and a rotational position determination information calculation unit 116.
[0045]
Here, the hit check unit 112 performs hit check processing for checking whether or not the shot shot by the player hits the object using the gun-type controller.
[0046]
The impact information calculation unit 114 performs a process of calculating an impact position and an impact vector applied to the object when an impact vector is added.
[0047]
The rotational position determination information calculation unit 116 calculates rotational position determination information necessary for determining the rotational position of the object based on the distance and the impact vector between the impact position and the rotation axis or rotation center of the object. Process.
[0048]
The image painter unit 160 generates an image including an object arranged based on the rotational position determination information.
[0049]
Here, a torque for rotating the object around the rotation axis or the rotation center is obtained based on a predetermined distance between the rotation axis or rotation center and the impact position and an impact vector, and the rotational position determination information is calculated based on the torque. You may do it.
[0050]
In addition, the rotation range of the object may be limited so that the rotation range of the object falls within a rotation range set according to the rotation characteristics of the object, or there is an obstacle in the rotation range of the object In addition, the rotation range of the object may be limited to a range that does not overlap with the obstacle. When the rotation angle of the object reaches the limit range, the rotation direction of the object may be changed so as to rotate in the reverse direction.
[0051]
Further, the magnitude of the rotational angular velocity of the object may be attenuated based on at least one of the passage of the game time and the occurrence of a collision with another object.
[0052]
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 not only the single player mode but also a multiplayer mode in which a plurality of players can play. The system may also be provided.
[0053]
Further, when a plurality of players play, game images and game sounds to be provided to the plurality of players may be generated using one terminal, or connected via a network (transmission line, communication line) or the like. Alternatively, it may be generated using a plurality of terminals.
[0054]
2. Features and operations of the present embodiment The first feature of the present embodiment is that when an impact vector is applied to an object having a given rotation axis or rotation center, the impact position and the rotation axis of the object. 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.
[0055]
FIG. 3 shows an example of a game image according to the present embodiment, and shows a state in which a bullet hits the vicinity of 710 of the locker door 720. In the present embodiment, when an impact such as a bullet is applied to an object that rotates around a predetermined axis 730 such as a door, in order to easily provide a more realistic image with a small calculation load, the following Processing is in progress.
[0056]
A method for calculating the rotation angle when the door rotates upon receiving a bullet will be described with reference to FIGS.
[0057]
FIG. 4 is a diagram for explaining a desired rotation angle of the door. The door 210 is configured to be rotatable around a rotation shaft 212 within a predetermined range. Here, considering the door's local coordinate system (x, y, z) so 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.
[0058]
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. This figure 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 with the z axis as the rotation axis, and thus the force in the z axis direction does not contribute to the rotation.
[0059]
Here, 230 is the position where the bullet 250 hits on the xz plane, that is, the impact position, and 240 is the xz component of the impact vector representing the magnitude and direction of the force received by the door due to the impact. In the present embodiment, calculation is performed to obtain a component 242 (VD) in the tangential direction with respect to the rotation trajectory 260 of the door 210 out of the xz component 240 of the impact vector.
[0060]
FIG. 6 is a diagram for explaining the relationship between the distance l from the rotation center 212 of the impact position 230 and the force T for rotating the door. In general, 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, when the same magnitude of force is applied to 310 and 320 in FIG. 6, the latter has a larger torque.
[0061]
The force T for rotating the rotation of the door is L for the reference length in the radial direction (length from the rotation axis to the end of the door), VD for the xz component of the impact vector, and l for the distance between the rotation center 212 and the impact position 230. As follows.
[0062]
T = VD × l / L (1)
Here, when the force for rotating the door is F and the proportionality constant is k, F is expressed as a function of T by the following equation.
[0063]
F (T) = kT (2)
Since generally the force is expressed by the product of mass and acceleration, rotation angular acceleration A.theta. _Y door can be expressed by the following equation.
[0064]
aθ _y = F (T) + F (v) (3)
Here, F (v) is a resistance of air or the like.
[0065]
In addition, for the sake of simplicity, aθ _y is considered as angular acceleration per frame, and the rotational angular velocity of the door in the previous frame is Vθ _{y (n-1)} and the rotational angular velocity of the door this time is Vθ _{y (n)} . The following equation holds.
[0066]
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. 410 is the door rotation start position, 420 is the position of the door of the (n-1) th frame, and 430 is the position of the door of the nth frame.
[0067]
As shown in FIG. 7, when the rotation angle of the door 420 of the _(n−1) th frame from the rotation start position 410 is Vθ _{y (n−1)} and the rotation angle of the nth frame is Vθ _{y (n)} , It holds.
[0068]
Sθ _{y (n)} = Sθ _{y (n-1)} + Vθ _y (5)
Here, in the next frame hit with a bullet, n = 1, and the following expressions hold for (4) and (5).
[0069]
Vθ _{y (1)} = aθ _y (6)
Sθ _{y (1)} = Vθ _y (7)
Therefore, in the next frame hit by the bullet, Sθ _{y (1)} = aθ _{y is satisfied} , and the door is arranged at a position rotated by aθ _y .
[0070]
By doing in this way, the image of the door which rotates reflecting the magnitude | size and direction of an impact position and an impact vector can be produced | generated.
[0071]
Furthermore, from the next frame, when a new impact is not applied, since F (T) = 0 in (3), aθ _y = F (v). Since this is a air resistance becomes the _{Vθ y (2) = Vθ y} (1) + aθ y which is obtained in _{(4), Vθ y (1} )> Vθ y (2). The same applies to the following frames.
Vθ _{y (1)} >...> Vθ _{y (n-1)} > Vθ _{y (n)}
Thus, the angular velocity of rotation gradually decreases. Therefore, it is possible to easily express on the game screen how the rotation of the door, which was initially strong, gradually attenuates.
[0072]
Next, an example of limiting the rotation range of the object in the present embodiment will be described. In this embodiment, since the rotation angle calculation target is a door, it is unnatural to rotate within a range of 360 degrees. Therefore, the rotation angle is limited so that the door rotates within a predetermined range.
[0073]
FIG. 8 is a diagram for explaining a calculation example of the rotation angle when limiting the rotation range of the door. The rotation range of the door is limited to between 510 and 520. If the reference position is 510 and the rotation angle of the door 210 from the reference position 510 is Sθ _y ,
L (−) ≦ Sθ _y ≦ L (+) (8)
Since the reference position is 510, L (−) = 0 and L (+) = 90, and the value of Sθ _y is obtained so as to satisfy the expression (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 this embodiment, the angular velocity after inversion is calculated as Vθ _y ′ as in the following equation.
[0074]
Vθ _y ′ = hVθ _y (−1 <h <0) (9)
By setting -1 <h <0, the expression of attenuation of the rotational angular velocity due to the reversal of the direction of rotation and the friction during reversal is realized.
[0075]
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.
[0076]
FIG. 9 is a diagram for explaining a restriction example of the rotation range when two doors are close to each other and each rotation interferes with the other rotation.
[0077]
610 and 620 are views of the door that can rotate about P ₁ and P ₂ as rotation axes, respectively, as seen from the y-axis direction. The distances from the rotation axes P ₁ and P ₂ to the end of the door are R ₁ and R ₂ , respectively. Reference numerals 612 and 622 denote circles with radii R ₁ and R ₂ around the rotation axes P ₁ and P ₂ , respectively, and this range is a planned rotation range of each door.
[0078]
However, since the distance between P ₁ and P ₂ is shorter than R ₁ + R _2, points that interfere with each other occur. Theoretically, if the two doors 610 and 620 can rotate 360 degrees, points 630 and 640 where the two doors intersect (hereinafter referred to as “intersections”) are generated, but in reality, the arc includes 630 to 640. In the enclosed part, the rotation of each door is restricted.
[0079]
Therefore, in the present embodiment, the position of each door is calculated from the theoretical rotation angle of the next frame. Then, an intersection point P ₃ between straight lines 614 and 624 extending in the longitudinal direction from each door is obtained. If the distance between P ₁ and P ₃ is L ₁ and 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 rotational speed of each door are V ₁ and V ₂ , and the corrected rotational 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 magnitude of the angular velocity is also attenuated. Therefore, it is possible to generate an image in which the rotation of the door is reversed by being restricted by the obstacle and the speed is attenuated by the friction during the reversal.
[0080]
10 to 13 are flowcharts for explaining an operation example of the present embodiment.
[0081]
First, the outline of the operation of the present embodiment will be described with reference to FIG. In the present embodiment, a process for obtaining a rotation angle necessary for image generation of the next frame is performed for each frame (steps S10 to S30), an object is arranged based on the obtained rotation angle, and an image including the object is generated. (Step S40).
[0082]
When obtaining the rotation angle, first, the rotation angle of the object (hereinafter referred to as “theoretical value of the rotation angle”) when there is no limitation on the rotation range is calculated (step S10). Then, a process of correcting the theoretical value so that the rotation angle is within the rotation range set according to the rotation characteristic of the object is performed (step S20).
[0083]
Then, a rotation angle correction process is performed to avoid overlapping with an obstacle in the rotation range of the object (step S30).
[0084]
Next, a detailed example of the process in step S10 in FIG. 10 will be described with reference to FIG. Here, a description will be given taking a door as an example of a rotating object.
[0085]
It is determined whether or not a bullet has hit the door (step S110), and if it hits, the force (T) for rotating the door generated by the hit is obtained as follows. (Steps S130 to S160).
[0086]
First, the impact position by the bullet and the magnitude and direction of the impact vector are obtained (step S130). Then, as described with reference to FIG. 5, the component (VD) in the contact direction with respect to the rotation trajectory of the door among the xz components of the impact vector is obtained (step S140). Further, as described with reference to FIG. 6, the ratio (l / L) between the reference length (L) in the radial direction and the distance (l) from the center of rotation to the impact position is obtained (step S150). Then, as shown by the expression (1) in the text, a force (T) for rotating the door is obtained based on VD and 1 / L (step S160).
[0087]
If no bullet hits the door, T = 0 (step S120).
[0088]
Next, as shown in 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 (step S170).
[0089]
Next, the current rotational angular velocity Vθ _{y (n)} is obtained from aθ _y and the previous rotational angular velocity Vθ _{y (n−1)} as shown by the equation (4) in the text (step S180).
[0090]
Then, as shown by the equation (5) in the text, the theoretical value of the current rotation angle Sθ _{y (n)} is obtained from Vθ _y and the previous rotation angle Sθ _{y (n−1)} (step S190).
[0091]
Next, a detailed example of the process in step S20 in FIG. 10 will be described with reference to FIG.
[0092]
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 to be within the limit range (step S220).
[0093]
Then, as indicated by the equation (9) in the text, a value obtained by multiplying the previous rotational angular velocity by the negative restitution coefficient is set as a new rotational angular velocity (step S230).
[0094]
Next, a detailed example of the process of step S30 in FIG. 10 will be described with reference to FIG.
[0095]
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 does not overlap the obstacle (step S320).
[0096]
Then, as indicated 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).
[0097]
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 1004, an information storage medium 1006, a sound generation IC 1008, an image generation IC 1010, and I / O ports 1012, 1014 are connected to each other via a system bus 1016 so that data can be transmitted and received. A display 1018 is connected to the image generation IC 1010, a speaker 1020 is connected to the sound generation IC 1008, a control device 1022 is connected to the I / O port 1012, and a communication device 1024 is connected to the I / O port 1014. Has been.
[0098]
The information storage medium 1006 mainly stores programs, image data for expressing display objects, sound data, and the like. For example, in a home game system, a DVD, a game cassette, a CDROM, or the like is used as an information storage medium for storing a game program or the like. In the arcade game system, a memory such as a ROM is used. In this case, the information storage medium 1006 is a ROM 1002.
[0099]
The control device 1022 corresponds to a game controller, an operation panel, and the like, and is a device for inputting a result of determination made by the player in accordance with the progress of the game to the system main body.
[0100]
In accordance with a program stored in the information storage medium 1006, a system program stored in the ROM 1002 (system body initialization information, etc.), a signal input by the control device 1022, the CPU 1000 controls the entire system and performs various data processing. . The RAM 1004 is a storage means used as a work area of the CPU 1000 and stores the given contents of the information storage medium 1006 and the ROM 1002 or the calculation result of the CPU 1000. A data structure having a logical configuration for realizing the present embodiment is constructed on the RAM or the information storage medium.
[0101]
Furthermore, this type of system is provided with a sound generation IC 1008 and an image generation IC 1010 so that game sounds and game images can be suitably output. The sound generation IC 1008 is an integrated circuit that generates game sounds such as sound effects and background music based on information stored in the information storage medium 1006 and the ROM 1002, and the generated game sounds are output by the speaker 1020. The image generation IC 1010 is an integrated circuit that generates pixel information to be output to the display 1018 based on image information sent from the RAM 1004, the ROM 1002, the information storage medium 1006, and the like. As the display 1018, a so-called head mounted display (HMD) can be used.
[0102]
The communication device 1024 exchanges various types of information used inside the image generation system with the outside, and is connected to other image generation systems to send and receive given information according to the game program, It is used to send and receive information such as game programs via a line.
[0103]
Various processes described with reference to FIGS. 1 to 13 include an information storage medium 1006 that stores information such as programs and data, a CPU 1000 that operates based on information from the information storage medium 1006, an image generation IC 1010, or a sound generation This is realized by the IC 1008 or the like. 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 or a general-purpose DSP.
[0104]
When this embodiment is applied to an arcade game system as shown in FIG. 1, a CPU, an image generation IC, a sound generation IC, and the like are mounted on a built-in system board (circuit board) 1106. Information for executing (implementing) the processing (means of the present invention) of this embodiment is stored in a semiconductor memory 1108 that is an information storage medium on the system board 1106. Hereinafter, this information is referred to as storage information.
[0105]
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 viewing the game image displayed on the display 1200. In this case, the stored information is stored in a DVD 1206, a memory card 1208, 1209, or the like, which is an information storage medium detachable from the main system.
[0106]
FIG. 15B shows a host device 1300 and terminals 1304-1 to 1304- connected to the host device 1300 via a communication line (small network such as a LAN or wide area network such as the Internet) 1302. An example in which the present embodiment is applied to an image generation system including n will be described. In this case, the stored information is stored in an information storage medium 1306 such as a magnetic disk device, a magnetic tape device, or a semiconductor memory that can be controlled by the host device 1300, for example. When the terminals 1304-1 to 1304-n have a CPU, an image generation IC, and a sound processing IC and can generate game images and game sounds stand-alone, the host device 1300 receives game images and games. A game program or the like for generating sound is delivered to the terminals 1304-1 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, which is transmitted to the terminals 1304-1 to 1304-n and output at the terminal.
[0107]
In the case of the configuration shown in FIG. 15B, the processing of the present invention may be distributed between the host device (server) and the terminal. The storage information for realizing the present invention may be distributed and stored in the information storage medium of the host device (server) and the information storage medium of the terminal.
[0108]
The terminal connected to the communication line may be a home game system or an arcade game system. And, when the arcade game system is connected to a communication line, portable information storage that can exchange information with the arcade game system and exchange information with the home game system. It is desirable to use a device (memory card, portable game machine).
[0109]
The present invention is not limited to that described in the above embodiment, and various modifications can be made.
[0110]
For example, in the present embodiment, the object whose rotation range is limited to a predetermined range such as a door has been described as an example, but the present invention is not limited to this. An object that can rotate 360 degrees, such as a rotating chair shown in FIG. 16, may be used. Further, for example, a T-shaped object such as a desk lamp may be rotated by receiving an impact.
[0111]
In this embodiment, the case where the rotation axis is parallel to the Y axis has been described as an example, but the present invention is not limited to this. The rotation axis may not be parallel to any of the three axes.
[0112]
In the present embodiment, a bullet is taken as an example of an impact applied to an object, but the present invention is not limited to this.
[0113]
In the present embodiment, the object rotating around the rotation axis has been described as an example, but the present invention is not limited to this. The present invention can also be applied to a rotation operation of an object that rotates around the rotation center.
[0114]
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 can also be applied to a rotating operation when a plurality of impacts are continuously applied.
[0115]
In addition to the gun game, the present invention can be applied to various games (shooting games other than gun games, fighting games, robot fighting games, sports games, competition games, role playing games, music playing games, dance games, etc.).
[0116]
The present invention also relates to various image generation systems such as a business game system, a home game system, a large attraction system in which a large number of players participate, a simulator, a multimedia terminal, an image generation system, and a system board for generating game images. Applicable.
[Brief description of the drawings]
FIG. 1 is a diagram showing 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 present embodiment.
FIG. 3 is an example of a game image of the present 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 the relationship between the distance l from the rotation center of the impact position and the force T for rotating the 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 the rotation range of the door.
FIG. 9 is a diagram for explaining a limiting example of 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 illustrating examples of various forms of systems to which the present embodiment is applied.
FIG. 16 is an example of another object to which the present invention is applicable.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 100 Processing part 110 Game operation part 112 Hit check part 114 Impact information operation part 116 Rotation position determination information operation part 130 Operation part 140 Storage part 150 Information storage medium 160 Image generation part 162 Display part 170 Sound generation part 172 Sound output part 174 Communication Part 176 I / F part 180 memory card

Claims (6)

Means for calculating an impact position and an impact vector applied to an object when an impact is applied to an object having a given rotation axis or rotation center;
To determine a position after rotation of the object by obtaining a torque for rotating the object around the rotation axis or center of rotation based on a distance between the impact position and the rotation axis or center of rotation of the object and an impact vector. Means for calculating rotational position determination information necessary for the operation based on the torque;
Means for generating an image including an object arranged based on the rotational position determination information. Means for calculating an impact position and an impact vector applied to an object when an impact is applied to an object having a given rotation axis or rotation center;
Means for calculating rotational position determination information necessary for determining a position after rotation of the object based on a distance and an impact vector between the impact position and the rotation axis or rotation center of the object;
Means for generating an image including an object arranged based on the rotational position determination information;
Including
The image generation system characterized in that the means for calculating the rotational position determination information changes the rotation direction of the object so as to rotate in the reverse direction when the rotation angle of the object reaches a limit range. In any one of Claims 1 thru | or 2 .
The means for calculating the rotation position determination information limits the rotation range of the object so that the rotation range of the object falls within a rotation range set according to the rotation characteristics of the object. . In any one of Claims 1 thru | or 3 ,
The means for calculating the rotational position determination information limits the rotation range of the object to a range that does not overlap with the obstacle when there is an obstacle in the rotation range of the object. A computer-readable information storage medium,
Means for calculating an impact position and an impact vector applied to an object when an impact is applied to an object having a given rotation axis or rotation center;
To determine a position after rotation of the object by obtaining a torque for rotating the object around the rotation axis or center of rotation based on a distance between the impact position and the rotation axis or center of rotation of the object and an impact vector. Means for calculating rotational position determination information necessary for the operation based on the torque;
An information storage medium storing a program for causing a computer to function as means for generating an image including an object arranged based on the rotational position determination information. A computer-readable information storage medium,
Means for calculating an impact position and an impact vector applied to an object when an impact is applied to an object having a given rotation axis or rotation center;
Means for calculating rotational position determination information necessary for determining a position after rotation of the object based on a distance and an impact vector between the impact position and the rotation axis or rotation center of the object;
Causing a computer to function as a means for generating an image including an object arranged based on the rotational position determination information;
The information storage means characterized in that the means for calculating the rotational position determination information stores a program for changing the direction of rotation of the object so as to rotate in the reverse direction when the rotation angle of the object reaches a limit range. Medium.

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