JP2007272267A - Image generation system, program and information storage medium - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide an image generation system, capable of generating the state of movement of a character to which an impact having a characteristic causing a positional movement is applied, or the state of its collision with a circumferential object as a natural game image with high reality. <P>SOLUTION: In this image generation system for generating an image seen through a virtual camera, an information arithmetic part 112 preliminarily specifies the movement locus of a first object caused by an impact within an object space and a second object crossing the movement locus, and also preliminarily specifies a change in shape of the second object in occurrence of a first collision event. An object control part 118 performs object control of moving, in the impact movement event, the first object along the preliminarily specified movement locus within the object space and changing, in the first collision event of the first and second objects, the state of the second object based on the specified change in shape. <P>COPYRIGHT: (C)2008,JPO&INPIT

Description

  The present invention relates to an image generation system, a program, and an information storage medium.

  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 capable of enjoying a fighting game system as an example, a player operates a controller to enjoy a three-dimensional game by attacking enemy characters (objects) projected on the game screen.

Conventionally, in such an image generation system, an enemy character attacked by a player character is thrown back as it is due to the impact, hits an object such as a wall existing around, and a game screen is generated in which the wall collapses. Things were also done.
JP 2000-113225 A JP-A-8-305891

  However, in a conventional three-dimensional game, when performing an effect such as an enemy character being blown backwards by impact and hitting a wall, a movement trajectory in which an attacked enemy character is blown backwards, a wall to hit, etc. The types of obstacles are pre-patterned, and as a result, the movement of enemy characters when attacked with a characteristic that causes position movement and the way the walls break are unnatural game images. was there.

  In addition, in order to increase the variation of the movement trajectory that is attacked and thrown backward and the variation of obstacles such as walls that the enemy character collides with, it is necessary to increase the data proportionally, but the memory that stores the data Since there is a limit to the capacity of the above, there is a limit to the variation.

  The present invention has been made in view of such a problem, and the purpose of the present invention is to provide a high level of reality with respect to the movement of the character and the collision with surrounding objects when subjected to an impact having the characteristic of causing position movement. An object is to provide an image generation system, a program, and an information storage medium that can be generated as a natural game image.

(1) In order to solve the above problems, the present invention provides:
A program for generating an image viewed with a virtual camera in an object space,
Impact movement event detection means for detecting the occurrence of an impact movement event having a characteristic that causes the position movement of the first object;
Information calculating means for calculating change information for specifying a state change in the object space caused by the impact movement event;
Causing a computer to function as an object control means for controlling an object in the object space based on the change information;
The information calculation means includes
First, a movement trajectory in the object space of the first object caused by an impact accompanying the occurrence of an impact movement event is specified in advance, and a second object that intersects the movement trajectory is specified in advance as a collision target object. 1 specific operation processing,
The object control means includes
In the object space, when the impact movement event occurs, object control is performed such that the first object is moved toward the second object along the movement locus specified in advance.

  The present invention also relates to an image generation system including the above means. The present invention also relates to a computer-readable information storage medium that stores (records) a program that causes a computer to function as each unit. A program according to the present invention includes a processing routine for realizing (executing) the above means.

  According to the present invention, when an impact is applied to the first object, the movement trajectory of the movement of the impacted first object is specified in advance as the first movement trajectory, and the object intersects with the specified movement trajectory. By adopting a configuration in which the process of previously specifying the second object as the collision target is executed and terminated before the collision event of the first and second objects occurs, the computation load is temporally It is possible to prevent the calculation load from being concentrated when a collision event occurs and to generate a more realistic moving image within the limited calculation capability even when the calculation capability of the CPU is limited.

(2) The present invention also provides:
A program for generating an image viewed with a virtual camera in an object space,
Impact movement event detection means for detecting the occurrence of an impact movement event having a characteristic that causes the position movement of the first object;
Information calculating means for calculating change information for specifying a state change in the object space caused by the impact movement event;
Causing a computer to function as an object control means for controlling an object in the object space based on the change information;
The information calculation means includes
The object space of the first object that is caused by the impact based on impact information that represents at least one of the direction and strength of the impact accompanying the occurrence of the impact movement event and the position at which the impact is applied to the first object. A movement trajectory calculating means for performing a first specifying calculation process for specifying in advance a second movement object that intersects with the movement trajectory as a collision target object,
A collision situation specifying means for performing a first shape change specifying process for specifying in advance a change in shape of the second object at the time of occurrence of a first collision event in which the first object collides with a second object;
Including
The object control means includes
In the object space, when the impact movement event occurs, the first object is moved along the previously specified movement trajectory, and is specified when the first collision event of the first and second objects occurs. Further, object control for changing the state of the second object based on the change in the shape is performed.

  The present invention also relates to an image generation system including the above means. The present invention also relates to a computer-readable information storage medium that stores (records) a program that causes a computer to function as each unit. A program according to the present invention includes a processing routine for realizing (executing) the above means.

(3) Here, the first specific calculation process is:
It is preferable to execute by physical simulation based on impact information indicating at least one of the direction and strength of the impact and a position where the impact is given to the first object.

  According to the present invention, when an impact is applied to the first object, a physical simulation based on the impact information indicating at least one of the direction and strength of the impact and the position where the first object has received the impact (pseudo). In other words, the movement trajectory of the impacted first object is obtained in advance as a first movement trajectory.

  This movement locus may be specified as a linear movement locus, for example, when gravity or the like is not set in the object space. If gravity or the like is set in the movement space, the mass and gravity of the first object, and further, if there is movement resistance in the object space, such as wind pressure or water pressure, this movement resistance A specific calculation process for obtaining the movement trajectory in advance may be performed by a physical simulation considering the above.

  Then, the second object that collides with the first object is identified based on the movement locus identified in this way. If there is an object that intersects the movement locus, the object is specified as the second object to be collided. For example, when there is a wall that first intersects the movement locus, the wall is identified as the second object that collides with the first object.

  When the second object is specified in this way, a shape change specifying process for specifying in advance a change in the shape of the second object at the time of collision of the first and second objects is performed. For example, when a wall is specified as the second object that collides with the first object, whether or not the shape of the wall changes when the first object collides with the wall, In the case of a change, a calculation process for specifying in advance how the shape changes is executed.

  When the shape of the second object is changed, the change of the shape may be performed using motion data representing a series of shape changes prepared in advance, or may be calculated by a physical simulation each time. May be.

  Then, the object control means performs a process of moving the first object along the specified movement path, and when the collision event occurs in which the first object collides with the second object, A state change process for changing the shape of the second object based on the change is performed.

  As described above, the present invention specifies the movement trajectory in which the impacted first object moves in the object space by the physical simulation, and further specifies the second object that collides with the first object. A moving image in which the first object that has received the object moves in the object space can be expressed realistically, and a moving image in which the second object colliding with the first object is also expressed realistically can be generated. it can.

  In particular, according to the present invention, the first object performs the process of specifying the movement trajectory of the first object executed in the physical simulation with a large amount of computation and the process of specifying the second object that collides with the second object. By ending in advance before a collision event that collides with an object of this type occurs, it is possible to distribute the calculation load by the physical simulation in time.

  Moreover, according to the present invention, the shape change specifying process for specifying the change in the shape of the second object at the time of the collision between the first and second objects is generated in the collision event of the first and second objects. By adopting a configuration that is executed before and ends, the calculation load at the time of occurrence of the collision event can be greatly reduced from this aspect, and a moving image of a more realistic collision event can be executed with a small calculation load.

  That is, according to the present invention, it is possible to avoid a large amount of calculation load from being concentrated at a time, and even if the CPU has a limited calculation capability, a physical simulation is performed within the limited calculation capability. A series of moving images, particularly a moving image in which the impacted first object moves, or a series in which the collided second object is deformed when the first object collides with the second object. A moving image can be displayed as a real image.

  Note that the specific calculation process for specifying the movement trajectory and the second object in advance and the shape change specifying process for the second object at the time of the collision are actually performed when the impact information on the first object and the position where the impact is applied are actually If the information is known in advance before the impact is applied, the calculation may be started from the point of time when the information is found. By doing so, the calculation load due to the physical simulation can be further dispersed in time. it can.

(4) In the image generation system, the program, and the information storage medium according to the present invention,
The information calculation means includes
A movement motion generation process for generating a movement motion of the first object moving along the movement trajectory is performed by a physical simulation based on the impact information and a position where the impact is applied to the first object.
The object control means includes
The motion of the first object that moves along the movement trajectory may be controlled based on the generated movement motion.

  Thus, by generating a moving motion by physical simulation (including pseudo physical simulation), it is possible to generate a moving image in which the first object to which an impact is applied moves as a more realistic image.

(5) In the image generation system, the program, and the information storage medium according to the present invention,
The movement motion generation process includes:
When an impact is applied to the Nth part of the first object composed of a plurality of parts, the Nth part is moved by the physical simulation based on the impact information and the (N + 1) th part, the (N + 2) th part, the The impact information is sequentially transmitted to the N + 3 portion,..., And the movement is performed by sequentially moving the N + 1th portion, the N + 2 portion, the N + 3 portion,... By physical simulation based on the transmitted impact information. You may make it produce | generate a motion.

  According to the present invention, when the Nth part of an object is hit, the Nth part moves (rotates or moves) by physical simulation (including pseudo physical simulation) based on impact information. . Further, the impact information is sequentially transmitted to the (N + 1) th and (N + 2) th parts, and the (N + 1) th and (N + 2) th parts are moved based on the transmitted impact information. According to the present invention, since the motion of the object is generated in this way, the object performs different motion depending on, for example, the impact position, the impact direction, and the like. As a result, real and diverse motion expressions can be realized.

  In the image generation system, the information storage medium, and the program according to the present invention, the impact information may be a force vector directed in the impact direction, and each part may be moved by a rotational moment obtained from the force vector. In this way, real and diverse motion expressions can be realized by a simple process of moving each part with a force vector and transmitting the force vector to each part.

  The image generation system, information storage medium, and program according to the present invention may sequentially attenuate the magnitude of the force vector to be transmitted when the force vector is transmitted to each part. In this way, the part closer to the impact position moves more greatly, and a realistic motion change can be realized with a simple process.

  In addition, the image generation system, the information storage medium, and the program according to the present invention are characterized in that a rotational resistance force corresponding to the angular velocity of each part is applied to each part. In this way, it is possible to prevent a situation where the angular velocity of each part becomes excessive and the generated motion becomes unnatural.

(6) Further, in the image generation system, the program, and the information storage medium according to the present invention,
The first shape change specifying process includes:
The physical simulation based on the second impact information indicating at least one of the direction and strength of impact at the time of the collision of the first and second objects, and the position where the impact is applied to the second object, You may make it perform as a process which produces | generates the change of the shape of a 2nd object previously.

  According to the present invention, the change in the shape of the second object when the collision event of the first and second objects occurs is changed to the second collision information and the position where the impact is applied to the second object. By obtaining it based on a physical simulation based on it (including a pseudo physical simulation), the shape change of the second object when the collision event occurs can be generated as a realistic moving image.

  In particular, according to the present invention, the physical simulation for the shape change specifying process of the second object is executed in advance before the occurrence of the collision event, so that the physical simulation with a heavy calculation load is concentrated when the collision event occurs. From this aspect, it is possible to realize real moving image generation with limited CPU computing power.

  Here, examples of the deformation of the shape of the second object include a situation in which the second object is destroyed or collapsed, and a shape change in which the object is dented or distorted.

(7) Further, in the image generation system, the program, and the information storage medium according to the present invention,
Second impact information indicating at least one of the direction and strength of impact at the time of occurrence of a first collision event in which the first object collides with the second object, and a position at which the impact is applied to the second object Based on the above, it is determined whether or not a collision movement event occurs in which the first object further moves after the collision, and if the collision movement event occurs, the movement trajectory of the first object after the collision is determined. A second specific calculation process is performed in which a second movement trajectory is specified in advance and a third object that intersects the second movement trajectory is specified in advance as a collision target object.
The collision situation specifying means includes
When the collision movement event occurs, the second object that specifies in advance a change in the shape of the third object when the second collision event occurs when the first object collides with the third object. Perform shape change identification processing,
The object control means includes
When the first collision event occurs, the first object is moved along the second movement trajectory, and when the second collision event occurs, the state of the third object is determined based on the specified shape change. You may make it perform the process which changes.

  According to the present invention, it is possible to specify in advance the second movement trajectory that the first object moves after colliding with the second object, and also specify the third object that collides after that. Thereby, the calculation load when the first object collides with the third object can be dispersed in time.

(8) In the image generation system, the program, and the information storage medium according to the present invention,
The second shape change specifying process includes:
Executed by physical simulation based on third impact information indicating at least one of the direction and strength of impact at the time of collision of the first and third objects, and a position where the impact is applied to the third object. You may do it.

(9) Further, in the image generation system, the program, and the information storage medium according to the present invention,
The impact movement event detection means includes:
Detecting the occurrence of a new impact event that gives a new impact to the first object that is moving along the identified movement trajectory;
The movement trajectory calculating means includes
When the occurrence of the new impact event is detected, by physical simulation based on impact information representing at least one of the direction and strength of the new impact and a position where the impact is applied to the first object, A new movement trajectory in which the first object moves in the object space by the new impact is specified in advance, and a new second object that collides with the first object based on the specified new movement trajectory. Specific calculation processing to specify in advance,
The collision situation specifying means includes
When the new second object is specified, a shape change specifying process for specifying in advance a change in the shape of the new second object at the time of the collision of the first and second objects is performed,
The object control means includes
In the object space, when the new impact event occurs, the first object is moved along the new movement trajectory, and when the first collision event of the first and second objects occurs, the specified shape is detected. A state change process for changing the state of the new second object based on the change of the second object may be performed.

  According to the present invention, even when the impacted first object is moving along the movement trajectory, for example, when an unexpected new impact is received, the game object is moved in the game space by the new impact. It is possible to generate a moving image that collides with the object with high reality under a limited calculation capability.

(10) In the image generation system, the program and the information storage medium according to the present invention,
The process of changing the state of the object is as follows:
A process for generating an image in which the object is destroyed based on the specified shape change may be used.

(11) In the image generation system, the program, and the information storage medium according to the present invention,
You may make it the parameter control means which sets the 1st collision parameter which prohibits or permits the change of the shape at the time of a collision according to a game situation at least one of the objects with which the said collision may generate | occur | produce.

  According to the present invention, the first collision parameter for prohibiting or permitting the change of the shape at the time of the collision is set to at least one of the objects that may cause the collision event according to the game situation. The parameter control means can control the change in the shape of the object when a collision event between the object and the first object occurs by controlling the first collision parameter.

  For example, assuming a fighting game in which multiple enemy characters that play against the player character appear sequentially, the building that wants to collapse only when the last character hits is destroyed by the character that appears at the beginning of the game. If this happens, there will be a situation in which it is not preferable for game production.

  In such a case, until the last character appears, the first parameter of the object is set as a parameter that prohibits the change in shape, and when the last enemy character appears in the second half of the game, The first parameter of the structure object is controlled to a parameter that permits a change in shape.

  In this way, an enemy character that appears at the end of the game is impacted by the attack of the player character, and the building character collapses only when it flies toward the object of the building and collides with it. It is possible to realize a game effect of performing.

  As described above, according to the present invention, by controlling the first collision parameter according to the progress of the game or the game situation of the character or the like appearing in the game, it is possible to generate a moving image with higher rendering effect according to the game development. Can be performed.

(12) In the image generation system, the program, and the information storage medium according to the present invention,
Parameter control means for setting a second collision parameter for inducing a collision in accordance with a game situation on at least one of the objects in which the collision may occur,
The movement trajectory calculating means includes
When the second collision parameter is set to induce a collision, a process of correcting the movement trajectory is performed so as to force a collision with the object based on a given condition. Also good.

  According to the present invention, the second parameter for inducing the collision is set according to the game situation for at least one of the objects that may cause the collision, and the value of the second parameter is set according to the game situation. To control.

  For example, assuming a fighting game, in the second half of the game, there is a case where it is required to perform a game effect in which a character hits a structure object having a high effect and destroys the structure.

  In such a case, according to the present invention, the second parameter of the structure object may be switched to a parameter in a state of inducing a collision according to the game situation. As a result, for example, the movement trajectory of the first object that is an enemy character attacked by the player character is in the direction associated with the object, and the movement distance does not reach the structure object. Even in such a case, correction calculation processing of the movement locus is performed so that the movement locus forcibly intersects the structure object.

  Accordingly, it is possible to generate a moving image in which a natural effect is executed in which a first object that is an attacked enemy character collides with a second object that is a structure object and destroys the second object.

  Hereinafter, this embodiment will be described. In addition, this Embodiment demonstrated below does not unduly limit the content of this invention described in the claim. In addition, all the configurations described in the present embodiment are not necessarily essential configuration requirements of the present invention.

1. Configuration FIG. 1 shows an example of a functional block diagram of the game system of the present embodiment. Note that the image generation system of the present embodiment may have a configuration in which some of the components (each unit) in FIG. 1 are omitted.

  The operation unit 160 is used to input operation performed by the player as data. For example, the operation unit 160 is used to input operation data of a player object (player character operated by the player), and functions thereof are lever, button, steering. , A microphone, a touch panel display, or a housing.

  The storage unit 170 serves as a work area for the processing unit 100, the communication unit 196, and the like, and functions as a main storage unit 171, a frame buffer 173, a parameter 174, a movement locus storage unit 175, and a physical simulation data storage unit 176. (VRAM) or the like.

  The information storage medium 180 (computer-readable medium) stores programs, data, and the like, and functions as an optical disk (CD, DVD), magneto-optical disk (MO), magnetic disk, hard disk, and magnetic tape. Alternatively, it can be realized by a memory (ROM). The processing unit 100 performs various processes according to the present embodiment based on a program (data) stored in the information storage medium 180. That is, the information storage medium 180 stores a program for causing a computer to function as each unit of the present embodiment (a program and data for causing a computer to execute processing of each unit).

  Part or all of the information stored in the information storage medium 180 is transferred to the storage unit 170 as necessary. Information stored in the information storage medium 180 includes program code for performing the processing of the present invention, image data, sound data, object data, texture data, table data, list data, and information for instructing the processing of the present invention. And at least one piece of information to be processed according to the instruction.

  The display unit 190 outputs an image generated according to the present embodiment, and its function can be realized by a CRT, LCD, touch panel display, HMD (head mounted display), or the like.

  The sound output unit 192 outputs the sound generated by the present embodiment, and its function can be realized by a speaker, headphones, or the like.

  The portable information storage device 194 stores player personal data, game save data, and the like. Examples of the portable information storage device 194 include a memory card and a portable game device.

  The communication unit 196 performs various controls for communicating with the outside (for example, a host device or other image generation system), and functions thereof are hardware such as various processors or communication ASICs, programs, and the like. It can be realized by.

  Note that a program (data) for causing a computer to function as each unit of this embodiment is transferred from the information storage medium of the host device (server) to the information storage medium 180 (or storage unit 170) via the network and communication unit 196. You may distribute. Use of the information storage medium of such a host device (server) can also be included in the scope of the present invention.

  The processing unit 100 (processor) performs processing such as game processing, image generation processing, or sound generation processing based on operation data and programs from the operation unit 160.

  Here, as the game process, a process for starting a game when a game start condition is satisfied, a process for advancing the game, a process for placing an object such as a character or a map, a process for displaying an object, and a game result are calculated. There is a process or a process of ending a game when a game end condition is satisfied.

  The processing unit 100 performs various processes using the main storage unit 171 in the storage unit 170 as a work area.

  The functions of the processing unit 100 can be realized by hardware such as various processors (CPU, DSP, etc.), ASIC (gate array, etc.), and programs.

  Further, as the game progresses, the processing unit 100 reads the necessary object data, texture data, and sound data from the information storage medium 180 and performs a read process of transferring and writing (downloading) the data to the storage unit 170.

  The processing unit 100 includes a game calculation unit 110, an image generation unit 120, and a sound generation unit 130.

  The game calculation unit 110 is an object composed of various objects (polygons, free-form surfaces, or subdivision surfaces such as subdivision surfaces) representing display objects such as characters, buildings, stadiums, cars, trees, columns, walls, and maps (terrain). ) Is read from the storage unit 170 and various objects are arranged and set in the object space. In other words, the position and rotation angle of the object in the world coordinate system (synonymous with direction and direction) are determined, and the rotation angle (rotation angle around the X, Y, and Z axes) is determined at that position (X, Y, Z). Arrange objects.

  Then, movement / motion calculation (movement / motion simulation) of the object (character, car, airplane, etc.) is performed. That is, based on operation data input by the player through the operation unit 160, a program (movement / motion algorithm), various data (motion data), etc., the model object is moved in the object space, or the object is moved (motion, motion, etc.). Animation). Specifically, a simulation process for sequentially obtaining object movement information (position, rotation angle, speed, or acceleration) and motion information (part object position or rotation angle) every frame (1/60 second). Do. A frame is a unit of time for performing object movement / motion processing (simulation processing) and image generation processing.

  Further, a virtual camera (viewpoint) control process is performed to generate an image that can be viewed from a given (arbitrary) viewpoint in the object space. Specifically, a process for controlling the position (X, Y, Z) or the rotation angle (rotation angle about the X, Y, Z axes) of the virtual camera (process for controlling the viewpoint position and the line-of-sight direction) is performed.

  For example, when an object (eg, character, ball, car) is photographed from behind using a virtual camera, the position or rotation angle of the virtual camera (the direction of the virtual camera is set so that the virtual camera follows changes in the position or rotation of the object. ) To control.

  In addition, the game calculation unit 110 performs a process for generating a moving image in which an impacted object moves. For example, a moving image in which an attacked object is blown away in a battle game, a moving image in which a punched character object is bounced and moved in a fighting game, or a racing game. For example, a process of generating a moving image in which a racing car object that has received an impact from the lateral direction is bounced off and moved is executed.

  In order to generate the series of moving images, the game calculation unit 110 according to the present embodiment includes an impact movement event detection unit 111 that detects the occurrence of an impact movement event having a characteristic that causes a position movement of the object, and the impact movement event. An information calculation unit 112 that calculates change information that specifies a state change in the object space caused by the object, and an object control unit 118 that controls an object in the object space based on the change information.

  The impact movement event detection unit 111 detects the occurrence of an impact event targeting the first object that is the target of moving image display, and further causes the position movement of the first object from the impact event. The occurrence of an impact movement event with

  The information calculation unit 112 includes a movement locus calculation unit 113, a collision situation identification unit 114, and a parameter control unit 116.

  The movement trajectory calculation unit 113 is caused by the impact based on impact information indicating at least one of the direction and strength of the impact accompanying the occurrence of the impact movement event and the position where the impact is applied to the first object. A first specification that preliminarily specifies a movement trajectory of the first object in the object space as a first movement trajectory and a second object that intersects the first movement trajectory as a collision target object in advance. Perform arithmetic processing.

  The collision state specifying unit 114 first specifies a change in the shape of the second object at the time of occurrence of a first collision event in which the first object collides with the second object in the object space. Perform shape change identification processing.

  The movement trajectory calculation unit 113 according to the present embodiment executes the first specific calculation process by physical simulation. Then, the calculated first movement locus and the data of the second object to be collided are written and stored in the movement locus storage unit 175.

  In the present embodiment, the shape change specifying process of the second object is executed by physical simulation. That is, physics based on the second impact information indicating at least one of the direction and strength of the collision at the time of the collision of the first and second objects, and the position where the second impact is applied to the second object. By the simulation, a shape change specifying process for generating a shape change of the second object in advance is executed.

  Then, the collision situation specifying unit 114 stores the shape change data of the second object obtained by the shape change specifying process in the physical simulation storage unit 176.

  Note that the second object at the time of a collision prepared in advance may depend on the case where the computational load of the physical simulation for generating the shape change of the second object in advance is too large compared to the computational capacity of the CPU or depending on the type of collision target. The deformation motion data may be specified by the shape change specifying process. For example, a structure that is the second object to be collided is formed as a group of display block objects that are dispersed after collapse, and the structure is destroyed by separating the display block objects when a collision event occurs. A situation can be generated. As such a prior art, for example, a technique described in Japanese Patent Application Laid-Open No. 2000-113225 is known.

  The object control unit 118 performs a process of moving the first object along the specified first movement trajectory, and has a specified shape when a collision event occurs between the first and second objects. A state change process for changing the state of the second object based on the change is performed.

  In particular, in the information calculation unit 112 of the present embodiment, when the first object moves along the first movement trajectory, the impact information given to the first object and the first object are impacted. A movement motion generation process stored in a physical simulation data storage unit for generating a movement motion of the first object moving along the movement locus is performed by a physical simulation based on the given position.

  Then, the object control unit 118 controls the motion of the first object that moves along the first movement trajectory based on the generated and stored movement motion.

  For example, when a first object punched in a fighting game or the like moves backward so as to be thrown out into the air, the motion when the first object moves backward along the movement trajectory is physically determined. A moving image with high reality can be generated by simulation.

  Note that the movement motion of the first object at this time may be performed immediately after the occurrence of the impact movement event that gives an impact to the first object, and this may be stored in the data storage unit 176. When one object moves along the movement trajectory, it may be calculated in real time to control its behavior.

  In the object space, there are many objects that may collide with the first object. In the present embodiment, among such a large number of objects, an object in which a first collision parameter for prohibiting or permitting a change in shape at the time of collision according to the game situation is set, and a collision is induced in the game situation. There is an object for which a second collision parameter is set. The parameter data of each object is stored in the parameter storage unit 174. FIG. 8 shows a specific example of the first and second parameters set for each object.

  The parameter control unit 116 sets and controls the first and second collision parameters set corresponding to these objects in accordance with the game situation.

  Referring to FIG. 8, when the first collision parameter is set to “1”, a change in the shape of the object at the time of collision is prohibited, and when the first collision parameter is set to “0”. Allows the shape of the object to change during a collision. Therefore, when the first collision parameter is set to a state in which collision is prohibited, the second object can be used regardless of the momentum the first object collides with the object as the second object. Does not deform. Only when the first collision parameter of the second object is set to allow deformation, the process of changing the shape of the second object is performed based on the change of the set shape.

  Further, when the second collision parameter is set to “1”, a collision is induced, and when the second collision parameter is set to “0”, it represents a situation where no collision is induced. The value of the second collision parameter is controlled according to the game situation for each object. For example, the second collision parameter is set so as to induce a collision in the second half of the game for an object that can boost the game atmosphere by actively generating a collision event in the second half of the game. .

  When the second collision parameter of the object is set to induce a collision, the second movement trajectory is corrected and calculated so as to reach the second object. As a result, the occurrence of a collision event between the first object and the second object is forcibly attracted.

  The image generation unit 120 performs drawing processing based on the results of various processing (game processing) performed by the processing unit 100, thereby generating an image, for example, from a given viewpoint (virtual camera) in the object space. A visible image is generated and output to the display unit 190.

  Specifically, in accordance with the result of the arithmetic processing performed by the processing unit 100, for example, various geometric processing (three-dimensional arithmetic) such as coordinate transformation, clipping processing, perspective transformation, or light source calculation, or an object (model) after the geometric processing. Then, various image processing such as drawing processing for drawing in the frame buffer 173 is performed to generate an image that can be seen from the virtual camera (viewpoint) in the object space, and output to the display unit 190.

  The sound generation unit 130 performs sound processing based on the results of various processes performed by the processing unit 100, generates game sounds such as BGM, sound effects, or sounds, and outputs the game sounds to the sound output unit 192.

  Note that the game system of the present embodiment may be a system dedicated to the single player mode that can be played by only one player, or not only such a single player mode but also a multiplayer mode in which a plurality of players can play. The system may also be provided. 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 (game machine, mobile phone).

  Note that all of the basics of the processing unit 100 may be realized by hardware, or all of them may be realized by a program. Alternatively, it may be realized by both hardware and a program.

2. 2. Method according to the present embodiment 2-1. FIG. 2 shows an example of a game screen when the present invention is applied to a fighting game.

  In the game screen of FIG. 2, a player character 2 operated by a player and first objects 2 and 10 that are enemy characters play a fighting game in an object space that is a predetermined three-dimensional game space. In this embodiment, when each character 2 and 10 is hit by an opponent character and receives an impact, a configuration is employed in which motion control is performed by physical simulation.

  In the present embodiment, as shown in FIG. 3, each character (object) 2, 10 has a plurality of parts (right hand 12, right forearm 14, upper right arm 16, chest 18, waist 20, left hand 22, left forearm 24). , Left upper arm 26, head 30, right foot 32, right shin 34, right crotch 36, left foot 42, left shin 44, and left crotch 46). Note that the positions and rotation angles (directions) of these parts (parts) can be expressed as the positions of joints J0 to J13 and the rotation angles of bones (arcs) A0 to A18 constituting the skeleton model. However, these bones and joints are virtual and are not objects that are actually displayed.

  In the present embodiment, the parts constituting the character have a parent-child (hierarchical) structure (actually, the joint has a parent-child structure). That is, the parents of the hands 12 and 22 are the forearms 14 and 24, the parents of the forearms 14 and 24 are the upper arms 16 and 26, the parents of the upper arms 16 and 26 are the chest 18, and the parent of the chest 18 is the waist 20. Become. The parent of the head 30 is the chest 18. The parents of the legs 32 and 42 are the shins 34 and 44, the parents of the shins 34 and 44 are the crotch 36 and 46, and the parents of the crotch 36 and 46 are the waist 20.

  Then, a motion of the character (object) hit by the opponent's attack and hit is generated using a physical simulation.

  For example, in FIG. 4, when a player's shot (bullet) hits the enemy character's forearm 14, the forearm 14 is first moved (rotated or moved) based on the impact force vector FH0 (impact information in a broad sense). Further, this impact force vector FH0 is sequentially transmitted (propagated) as FH1, FH2, FH3 and FH4 to the upper arm 16, chest 18 and waist 20 which are parent parts. Then, the upper arm 16, the chest 18, and the waist 20 are moved by the transmitted impact force vectors FH1 to FH4.

  More specifically, the impact force vector FH0 is a vector whose direction is in the direction of the hit (orbit direction of the shot) and whose magnitude represents the power of the hit. Then, the rotational moment is obtained by taking the outer product of the vector HV connecting the joint J1 and the impact position (landing position) HP and the impact force vector FH0.

  Next, the angular acceleration of the forearm 14 is calculated based on this rotational moment and the virtual mass of the forearm 14. Based on the calculated angular acceleration, the angular velocity of the forearm 14 is calculated, and the forearm 14 rotates at this angular velocity as indicated by R0.

  The magnitude of the impact force vector FH0 (impact information) is attenuated and transmitted to the upper arm 16, which is the parent part, as FH1. More specifically, the FH1 acts on the joint J1, and the upper arm 16 rotates as indicated by R1 by the rotational moment generated by the FH1.

  Next, FH2 transmitted to the chest 18 acts on the joint J2, and the chest 18 rotates as indicated by R2 by the rotational moment by the FH2.

  Next, FH3 transmitted to the waist 20 acts on the joint J3, and the waist 20 rotates as indicated by R3 by the rotational moment by the FH3. Further, FH4 transmitted to the waist 20 acts on the representative point RP, and the waist 20 moves as indicated by MT0 by this FH4. When the waist 20 moves in the direction of MT0, other parts other than the waist 20 also move in the direction of MT0. However, also in this case, the relative positional relationship between the waist 20 and other parts does not change.

  According to the present embodiment, it is possible to generate a variety of different motions depending on the impact position, impact direction, impact force magnitude, etc. without preparing the motion data as described above. For example, the response of the enemy character changes finely according to the impact position of the shot. Therefore, real and various motion expressions can be realized with a small amount of data.

  In the present embodiment, an impact force vector is used as impact information for moving each part. Then, as shown in FIG. 5A, for example, the rotational moment LN × FHN is obtained from the impact force vector FHN, and the Nth part is moved (rotated) by the obtained rotational moment. Then, the impact force vectors FHN + 1 and FHN + 2 are sequentially transmitted to the N + 1th and N + 2 adjacent parts, and the N + 1th and N + 2 parts are moved by these impact force vectors. More specifically, FHN acts on the Nth site in frame K, FHN + 1 acts on the N + 1th site in frame K + 1, and FHN + 2 acts on the N + 2 site in frame K + 2.

  By doing so, it is possible to realistically express how each part of the enemy character moves due to the impact of the impact force vector by a simple process of sequentially transmitting the impact force vector to the adjacent part.

  In this case, in this embodiment, when the impact force vector is sequentially transmitted to each part, the magnitude of the transmitted impact force vector is attenuated sequentially (attenuation rate is about 90%, for example). That is, the magnitude of the impact force vector is attenuated such that | FHN |> | FHN + 1 |> | FHN + 2 |. By doing so, the part closer to the impact position moves more greatly, so that a realistic motion change closer to the real world event can be realized with a simple process of simply reducing the magnitude of the impact force vector. Become.

  Moreover, in this Embodiment, the rotational resistance force according to the angular velocity of each site | part is made to act on each site | part.

  For example, as shown in FIG. 5B, a rotational resistance force FRN corresponding to the magnitude of the angular velocity ωN of the Nth part is applied to the Nth part. Further, a rotational resistance force FRN + 1 corresponding to the magnitude of the angular velocity ωN + 1 of the (N + 1) th portion is applied to the (N + 1) th portion in the direction opposite to the rotation. Further, a rotational resistance force FRN + 2 corresponding to the magnitude of the angular velocity ωN + 2 of the N + 2 part is applied to the N + 2 part in the direction opposite to the rotation.

  By applying such a rotational resistance force, it is possible to effectively prevent a situation in which the angular velocity of each part changes abruptly and unnatural motion occurs.

  In this embodiment, a restoring force for returning the enemy character to a given posture is applied to each part.

  For example, when the character's posture is changed by the impact force vector FH, the character is returned to the default posture.

  In this way, it is possible to prevent a situation in which the posture of the enemy character is extremely collapsed by hitting many shots by high-speed continuous fire. This is because even if the shots are hit consecutively, the character returns to the original default posture little by little by the restoring force each time it hits. Thereby, even if many shots are hit, it is possible to express a character that is not easily defeated.

  Note that the process of returning the character to the default posture can be realized by holding the default rotation angle of each part in the storage unit and performing the process of returning the angle of each part to the default angle.

2-2. Generation of a moving image in which an impacted object moves In the case of performing the fighting game shown in FIG. 2, for example, the player character 2 moves the first object 10 that is an enemy character with a large impact force in a timely manner. In the event of a hit, a game effect is performed in which the enemy character 10 is greatly skipped by the impact and hits an obstacle around it.

  In the present embodiment, the moving image of the first object 10 subjected to the impact in this way is generated by physical simulation (including pseudo physical simulation).

  Details will be described below.

2-2-1. Specific calculation process for specifying in advance the moving object and the second object colliding with the first object 20 FIG. 6A shows an example of this specific calculation process.

  In the present embodiment, when the impact movement event detection unit 111 detects that an impact movement event that applies an impact force sufficient to move the character 10 is performed on the character 10, the movement trajectory calculation processing unit 113 A specific calculation process is performed to specify a process for specifying in advance the first movement locus A in which the first object 10 moves in the object space.

  In the present embodiment, an impact force vector representing the direction and strength of impact on the first object 10 is used as impact information, and the impact information and the impact are applied to the first object 10. By performing a physical simulation based on the position (including a pseudo physical simulation), a process of specifying the movement trajectory in which the first object 10 moves in the object space by the impact as the first movement trajectory A is performed.

  Here, for example, when drawing a movement trajectory in which the first object 10 jumps into the air due to an impact, in addition to the impact force vector and the position where the impact is applied, gravity G and other environmental information, for example, The movement trajectory A is obtained by physical simulation considering wind pressure, air resistance, and the like.

  When the movement locus A is obtained in this way, a specific calculation process is performed to identify the object that intersects with the movement locus A as the second object 4 as a collision target.

  In the example illustrated in FIG. 6, the wall object 4 that intersects the movement locus A is specified as the second object.

  In the present embodiment, the specific calculation process based on the physical simulation for obtaining the movement trajectory A and the second object 4 is performed before the actual collision event between the first object 10 and the second object 4 occurs. It is executed so as to end in advance.

2-2-2. Shape Change Specifying Process When the movement trajectory A and the second object 4 to be collided are specified, the collision information specifying unit 114 next executes the second when the collision event of the first and second objects 10 and 4 occurs. The shape change specifying process for specifying the shape change of the object 4 in advance is executed.

  Specifically, when a physical simulation in which the first object 10 moves along the movement trajectory A is executed, the first object 10 collides with a wall object that is the second object 4 along with the physical simulation. The position and the impact force vector representing the impact direction and strength of the first object 10 at the time of collision are obtained in advance as the second impact information. Therefore, when the first collision parameter shown in FIG. 8 is set as a parameter allowing the collision for the wall object 4, the shape of the wall object, which is the second parameter 4, is set by the collision. A process for identifying the change by physical simulation is performed.

  In FIG. 6B, the shape change that destroys the wall object 4 is specified by the physical simulation.

  That is, when the impact force vector of the first object 10 at the time of the collision event of the first and second objects 10 and 4 has an impact force that causes the collapse of the second object 4 that is a wall object. As shown in FIG. 6B, the shape change when the second object 10 collapses is specified by the physical simulation. When the power of the impact force vector does not reach the level at which the deformation of the second object 10 occurs, it is specified that the shape change of the second object 4 does not occur.

Processing for identifying such movement locus A and the second object 4, the process of specifying the shape change of the second object 4, after the impact movement event has occurred as shown in FIG. 7 (t ₁₀ after) promptly started, the actual first, it is performed so as to terminate the 1st collision event occurs prior to the second object 10, 4 (t ₂₀ earlier).

In this embodiment, the timing t ₂₀ to the impact movement event occurrence time t ₁₀ is the first time an impact event occurs is prediction calculation by physical simulation. Therefore, the specific processing in the t ₂₀ earlier, the priority levels of the different operations are set so that the shape change identifying process is ended.

Thus, actually definitive to the timing t ₂₀ to the 1st of the impact event has occurred, various suppress transient and rapid increase in operation load, in a limited computing power, highly realistic by physical simulation A moving image can be generated.

2-2-3. Calculation of movement motion of first object In the present embodiment, the movement motion when the first object 10 moves along the movement trajectory A after receiving an impact and the second object 4 are collided. The collision motion is generated using a physical simulation method. In this embodiment, the generation of such movement motion and collision motion, performed after impact move event occurrence timing t ₁₀ shown in FIG. 7, stores the generated data to the simulation data store 176.

  If the CPU has insufficient computing power, such movement motion and collision motion may be generated based on motion data prepared in advance.

2-2-4. Second and subsequent collision events As shown in FIG. 6B, when a collision event occurs in which the first object 10 collides with the second object 4, the strength of the impact force vector of the second object 10 and Depending on the direction, as shown in FIGS. 6C and 6D, the first object 10 may further move along the second movement locus B and collide with the third object 6. There may be two collision events.

  In the present embodiment, the movement trajectory calculation unit 113 includes an impact force vector (second impact information) that represents the direction and strength of the impact at the time of occurrence of a collision event of the first and second objects 10 and 4, and Based on the position where the impact is applied to the second object, etc., it is determined whether or not a collision movement event occurs in which the first object 10 further moves after the collision.

  As a result of this determination, if a collision event occurs, an impact force vector representing the direction and strength of the impact at the time of the collision of the first and second objects 10 and 4 and the impact is the second The second movement trajectory B of the first object 10 after the occurrence of the first collision event is specified in advance by a physical simulation based on the position given to the object 10, and the specified second movement trajectory Based on B, a specific calculation process for specifying in advance the third object 6 that collides with the first object 10 is performed.

  Further, the collision situation calculation unit 114 performs a shape change specifying process for specifying in advance a change in the shape of the third object 6 at the time of the collision between the specified third object 6 and the first object 10.

  Then, the object control unit 118 moves the first object 10 along the specified second movement locus B after the first collision event occurs, and the first and third objects 10 and 3 collide. When an event occurs, a state change process for changing the state of the third object 6 based on the specified shape change is executed in the same manner as described above.

The Figure 7 there is shown the execution timing of each operation, the first collision event occurs at the timing of t _20, then immediately physics simulation by calculation for identifying the second movement trajectory B and the third object 6 The processing is executed, and thereafter, arithmetic processing for specifying the shape change of the third object 6 is performed.

  Further, in parallel with these calculations, the movement motion of the first object 10 when moving along the second movement trajectory B after the occurrence of the first collision event and the calculation of the collision motion at the time of the second collision are performed. This is executed in the same manner as described above.

  In the example shown in FIG. 6, when the first object 10 collides with the second object 4 that is a wall, the second object is destroyed, and then the first object 10 becomes the second movement locus B. A series of operations are performed in which the robot moves along the wall 6 and collides with the wall 6 as a third object to stop. Here, since the impact force vector at the time of the second collision event does not have power to destroy the third object 6 that is the wall, the third object 6 representing the wall is not deformed and remains as it is. Will exist in a state.

2-2-5. Parameter Setting Control Among a plurality of objects that may collide with the first object 10 in the object space, a predetermined object has a first collision parameter and a second collision parameter as shown in FIG. Once set, the value of this parameter is controlled based on the game situation.

  For example, in the example illustrated in FIG. 6, if the first collision parameter of the second object 4 that is a wall object is set to a value that prohibits a change in the shape of the object, the first object 10 is temporarily Even if the second object 4 collides with an impact force that destroys the second object 4, the second object 4 that is a wall object remains intact without being deformed without being destroyed by the collision. In this case, the first object 10 is jumped off when it hits the second object 4 or stops on the spot.

  For example, when a fighting game or the like is performed, the first collision parameter of the object 4 is set so that the weak enemy character 10 does not hit the wall object 4 and destroy the wall object 4 in the first half of the game. The parameter control is set such that the shape change is prohibited and the first collision parameter of the wall character 4 is controlled to allow the destruction when a strong enemy character appears in the second half of the game. Is done.

  Thereby, only when the strong enemy character 10 in the second half of the game collides with the wall character 4, the wall character 4 is destroyed, and a game effect that excites the atmosphere of the game becomes possible.

  In the present embodiment, a second collision parameter is set for any object that may collide with the first object 10 as shown in FIG. The parameter value is controlled.

  For example, taking the case shown in FIG. 6 as an example, the second collision parameter is set for the third object 6 representing the wall. The second collision parameter is a parameter that induces a collision according to the game situation, and this parameter value is controlled according to the game situation.

  For example, in the scene that excites the game, when a first collision event occurs in which the first object 10 collides with the wall object 4 as shown in FIG. 6B, as shown in FIG. The second movement locus B and the third object 6 that is a collision object intersecting with the second movement locus B are specified.

  At this time, in the result of the physics simulation, the second movement trajectory B does not reach the third object 6 and the second collision event between the third object 6 representing the wall and the first object 10 does not occur. There is also.

  In such a case, in the present embodiment, the second movement trajectory B reaches the third object 6 by setting and controlling the second collision parameter of the wall object 6 so as to induce the collision. Correction calculation processing to be corrected is performed.

  As a result, the first character 10 that has been shocked by the attack of the player character 2 knocks down the second object 4 representing the first wall and collides with the third object 6 representing the wall in the back as it is. It is possible to naturally perform the effect of performing the game, thereby enlivening the atmosphere of the game.

  In particular, such an effect is preferably executed when a strong enemy character appears in the second half of the game, so that in the second half of the fighting game, the player character stabs the enemy character and reaches the game ending. That is, a game effect can be performed.

3. Processing of the present embodiment Next, detailed processing of the present embodiment will be described using the flowcharts shown in FIGS.

  First, when the game is started, a fighting game in a three-dimensional object space that is a game space is started, and a game screen of a fighting scene between the player character 2 and the enemy character 10 is displayed as shown in FIG. Is done.

  The player operates the operation unit 160 to attack the enemy character 10 and advance the game so as to avoid the attack from the enemy character 10.

  In this fighting game, when an attack with an impact force that blows the enemy character 10 around by the punch or kick of the player character 2 is hit (step S12), the player character 10 that has received this attack is A game effect is performed in which the game is blown away and collides with surrounding objects (steps S14 to S22).

  First, in step S12, when it is determined that an impact of a level that blows off the first object 10 has occurred, as shown in FIG. 6A, the first object 10 is moved by the impact according to a physical simulation. The trajectory A is specified, and the object that intersects with the moving trajectory A is specified as the second object 4 to be collided (step S14).

  In parallel with this, a process of generating and controlling a movement motion when the first object 10 moves along the movement locus A is performed (step S16).

  As a result, the impacted first object 10 moves along the movement trajectory A toward the second object 4 while operating according to the generated movement motion.

  Further, a process for specifying the shape change of the second object 4 when the first object 10 moves along the movement path A and collides with the second object 4 representing the wall is performed, as shown in FIG. In the example, a shape change that destroys the second object is identified.

As shown in the time chart of FIG. 7, at the point of time t ₁₀ to the first character 10 is a character receives an impact, the timing t ₂₀ to the 1st collision event occurs is predicted operation. For this reason, before the first collision event occurs, the series of processes are all performed so as to end. That is, the processing of steps S14~S18 are executed to end all at the generation timing _{t 20} of the 1st collision event.

  In this way, when the first collision event occurs, the occurrence of a situation in which various processes are concentrated is prevented in advance, and the first object 10 and the first object 10 based on the heavy physical simulation process are prevented. The collision effect with the second object 4 can be realized realistically.

That is, the first object 10 moves along the first moving path A, in the 1st collision timing t ₂₀ events impinging on the second object 4 is a wall, as shown in FIG. 6 (B) In addition, the first object 10 collides with the second object 4 and, for example, it is possible to smoothly execute a collision effect that destroys the second object 4, and it is possible to display this effect scene as a highly realistic image (step S20). .

  Then, when the first collision event occurs, processing for specifying the next behavior of the first object 10 after the collision is performed (step S22).

  FIG. 10 shows an example of this. First, when the first collision event occurs, it is determined whether or not the first object 10 still has an impact force enough to move (see FIG. 10). Step S30).

  If it is determined that it remains, then as shown in FIG. 6C, the movement trajectory B in which the first object 10 further moves and the third object 6 with which the first object 10 collides are specified. Processing is performed. (Step S32).

  Further, generation and control of the movement motion of the first object 10 moving along the movement trajectory B is performed (step S34), and in addition, processing for specifying the shape change of the third object 6 at the time of collision is performed.

  These processes in steps S32 to S36 are executed in the same manner as the processes in steps S14 to S18.

Then, as shown in FIG. 6 (D), in the collision event generation timing t ₃₀ to collide with the third object 6 in which the first object 10 represents a second wall, the first object 10 second A game effect is produced in a situation of colliding with the third object representing the wall.

  A series of processing of these steps S10 to S38 is repeatedly executed until the game is finished, and thereby, a highly realistic game effect based on a physics simulation is executed.

4). Hardware Configuration FIG. 11 shows an example of a hardware configuration capable of realizing this embodiment. The main processor 900 operates based on a program stored in a DVD 982 (information storage medium, which may be a CD), a program downloaded via the communication interface 990, a program stored in the ROM 950, or the like. Perform processing, sound processing, etc. The coprocessor 902 assists the processing of the main processor 900, and executes matrix operation (vector operation) at high speed. For example, when a matrix calculation process is required for a physical simulation for moving or moving an object, a program operating on the main processor 900 instructs (requests) the process to the coprocessor 902.

  The geometry processor 904 performs geometry processing such as coordinate conversion, perspective conversion, light source calculation, and curved surface generation based on an instruction from a program operating on the main processor 900, and executes matrix calculation at high speed. The data decompression processor 906 performs decoding processing of the compressed image data and sound data and accelerates the decoding processing of the main processor 900. Thereby, a moving image compressed by the MPEG method or the like can be displayed on the opening screen or the game screen.

  The drawing processor 910 executes drawing (rendering) processing of an object composed of primitive surfaces such as polygons and curved surfaces. When drawing an object, the main processor 900 uses the DMA controller 970 to pass the drawing data (vertex data and other parameters) to the drawing processor 910 and, if necessary, the texture to the texture storage unit 924. Forward. Then, the drawing processor 910 draws the object in the frame buffer 922 while performing hidden surface removal using a Z buffer or the like based on the drawing data and texture. The drawing processor 910 also performs α blending (translucent processing), depth cueing, mip mapping, fog processing, bilinear filtering, trilinear filtering, anti-aliasing, shading processing, and the like.

  The sound processor 930 includes a multi-channel ADPCM sound source and the like, generates game sounds such as BGM, sound effects, and sounds, and outputs them through the speaker 932. Data from the game controller 942 and the memory card 944 is input via the serial interface 940.

  The ROM 950 stores system programs and the like. In the case of an arcade game system, the ROM 950 functions as an information storage medium, and various programs are stored in the ROM 950. A hard disk may be used instead of the ROM 950. The RAM 960 is a work area for various processors. The DMA controller 970 controls DMA transfer between the processor and the memory. The DVD drive 980 (may be a CD drive) accesses a DVD 982 (may be a CD) in which programs, image data, sound data, and the like are stored. The communication interface 990 performs data transfer with the outside via a network (communication line, high-speed serial bus).

  Note that the processing of each unit (each unit) of the present embodiment may be realized entirely by hardware, or by a program stored in an information storage medium or a program distributed via a communication interface. May be. Alternatively, it may be realized by both hardware and a program.

  When the processing of each unit of the present embodiment is realized by both hardware and a program, a program for causing the hardware (computer) to function as each unit of the present embodiment is stored in the information storage medium. Is done. More specifically, the program instructs the processors 902, 904, 906, 910, and 930, which are hardware, and passes data if necessary. Each processor 902, 904, 906, 910, 930 realizes the processing of each unit of the present invention based on the instruction and the passed data.

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

  For example, in the above-described embodiment, the case where the impact force vector representing both the direction and strength of the impact is used as the impact information has been described as an example. However, the present invention is not limited thereto, and the direction and strength of the impact. At least one of the above may be used as impact information.

  Further, for example, as shown in FIG. 6 (A) or (C), when the first object 10 is moved along the movement trajectories A and B, a new impact is applied to the first object 10. For this impact, the processing shown in steps S12 to S18 shown in FIG. 9 is executed to specify a new movement locus and a new second object, and the processing in steps S20 and S22 is performed. .

  Further, the present invention is not limited to those described in this embodiment, and techniques equivalent to these are also included in the scope of the present invention.

  Further, the present invention can be applied to various games (such as fighting games, shooting games, racing games, robot fighting games, sports games, competitive games, role playing games, music playing games, dance games, etc.). The present invention is also applicable 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, a system board for generating game images, and a mobile phone. it can.

  In this case, for example, in the case of a shooting game, a game effect based on a physical simulation similar to the above embodiment can be realized based on the impact information when the first object is shot and its position. .

  In the above-described embodiment, the case where the process of previously specifying the movement locus of the first object in the object space caused by the impact accompanying the occurrence of the impact movement event is performed by physical simulation has been described as an example. In addition to this, for example, a configuration is adopted in which a plurality of movement trajectories are prepared as data for the first object in advance and specified by appropriately selecting the movement trajectory according to the content of the generated impact movement event. May be.

  Further, in a racing game in which a plurality of moving bodies compete with each other, when an impact is applied to the moving body, a behavior based on the impact can be realized in the same manner as in the above embodiment.

It is a functional block diagram of this Embodiment. It is explanatory drawing which shows an example of a game screen. It is a figure shown about the example of the character (object) comprised by a some site | part. It is a figure for demonstrating the motion generation method at the time of the impact generation in this Embodiment. FIGS. 4A and 4B are diagrams for explaining a method for transmitting the parent part while attenuating the magnitude of the impact force vector and a technique for applying a rotational resistance force corresponding to each speed to each part. FIG. FIGS. 9A to 9D are diagrams for explaining a series of situations in which a shocked character moves along a movement trajectory and collides with a foreign object. It is a figure for demonstrating the timing of various calculations when the impacted object collides with a 2nd object and a 3rd object. It is explanatory drawing of the parameter set with respect to each object. It is a flowchart figure which shows the specific process example of this Embodiment. It is a flowchart figure which shows the specific process example of step S22 shown in FIG. It is explanatory drawing of a hardware structure.

Explanation of symbols

A first movement locus B second movement locus 4 second object 6 third object 10 first object 100 processing unit 110 game operation unit 111 impact event detection unit 112 information operation unit 113 movement locus calculation unit 114 collision Situation identification unit 116 Parameter control unit 118 Object control unit 120 Image generation unit 130 Sound generation unit 160 Operation unit 170 Storage unit 171 Main storage unit 173 Frame buffer 180 Information storage medium 194 Portable information storage device

Claims (14)

A program for generating an image viewed with a virtual camera in an object space,
Impact movement event detection means for detecting the occurrence of an impact movement event having a characteristic that causes the position movement of the first object;
Information calculating means for calculating change information for specifying a state change in the object space caused by the impact movement event;
Causing a computer to function as an object control means for controlling an object in the object space based on the change information;
The information calculation means includes
Accompanying the occurrence of an impact movement event, the movement trajectory of the first object caused by the impact in the object space is specified in advance, and the second object that intersects the movement trajectory is specified in advance as a collision target object. Perform the first specific calculation process,
The object control means includes
A program for performing object control for moving the first object toward the second object along the predetermined movement trajectory when the impact movement event occurs in the object space. A program for generating an image viewed with a virtual camera in an object space,
Impact movement event detection means for detecting the occurrence of an impact movement event having a characteristic that causes the position movement of the first object;
Information calculating means for calculating change information for specifying a state change in the object space caused by the impact movement event;
Causing a computer to function as an object control means for controlling an object in the object space based on the change information;
The information calculation means includes
The object space of the first object that is caused by the impact based on impact information that represents at least one of the direction and strength of the impact accompanying the occurrence of the impact movement event and the position at which the impact is applied to the first object. A movement trajectory calculating means for performing a first specifying calculation process for specifying in advance a second movement object that intersects with the movement trajectory as a collision target object,
A collision situation specifying means for performing a first shape change specifying process for specifying in advance a change in shape of the second object at the time of occurrence of a first collision event in which the first object collides with a second object;
Including
The object control means includes
In the object space, when the impact movement event occurs, the first object is moved along the previously specified movement trajectory, and is specified when the first collision event of the first and second objects occurs. A program for performing object control for changing a state of the second object based on a change in the shape. In any one of Claims 1, 2.
The first specific calculation process is:
A program executed by a physical simulation based on impact information representing at least one of the direction and strength of the impact and a position where the impact is given to the first object. In any one of Claims 1-3,
The information calculation means includes
A movement motion generation process for generating a movement motion of the first object that moves along the movement trajectory is performed by a physical simulation based on the impact information and a position where the impact is applied to the first object.
The object control means includes
A program for controlling a motion of the first object that moves along a movement trajectory based on the generated movement motion. In claim 4,
In the movement motion generation process,
When an impact is applied to the Nth part of the first object composed of a plurality of parts, the Nth part is moved by the physical simulation based on the impact information and the (N + 1) th part, the (N + 2) th part, the The impact information is sequentially transmitted to the N + 3 portion,..., And the movement is performed by sequentially moving the N + 1th portion, the N + 2 portion, the N + 3 portion,... By physical simulation based on the transmitted impact information. A program characterized by generating motion. In any one of Claims 2-5,
The first shape change specifying process includes:
This is executed by physical simulation based on second impact information representing at least one of the direction and strength of impact at the time of collision of the first and second objects, and the position where the impact is applied to the second object. A program characterized by that. In any one of Claims 1-6,
The movement trajectory calculating means includes
Second impact information indicating at least one of the direction and strength of impact at the time of occurrence of a first collision event in which the first object collides with the second object, and a position at which the impact is applied to the second object Based on the above, it is determined whether or not a collision movement event occurs in which the first object further moves after the collision, and if the collision movement event occurs, the movement trajectory of the first object after the collision is determined. A second specific calculation process is performed in which a second movement trajectory is specified in advance and a third object that intersects the second movement trajectory is specified in advance as a collision target object.
The collision situation specifying means includes
When the collision movement event occurs, the second object that specifies in advance a change in the shape of the third object when the second collision event occurs when the first object collides with the third object. Perform shape change identification processing,
The object control means includes
After the first collision event occurs, the first object is moved along the second movement trajectory, and when the second collision event occurs, the state of the third object is determined based on the specified shape change. A program characterized by performing a process of changing. In claim 7,
The second shape change specifying process includes:
This is executed by physical simulation based on third impact information indicating at least one of the direction and strength of impact at the time of collision of the first and third objects, and the position where the impact is applied to the third object. A program characterized by that. In any one of Claims 1-8,
The impact movement event detection means includes:
Detecting the occurrence of a new impact event that gives a new impact to the first object that is moving along the identified movement trajectory;
The movement trajectory calculating means includes
When the occurrence of the new impact event is detected, by physical simulation based on impact information representing at least one of the direction and strength of the new impact and the position where the impact is applied to the first object, A new movement trajectory in which the first object moves in the object space by the new impact is specified in advance, and a new second object that collides with the first object based on the specified new movement trajectory. Specific calculation processing to specify in advance,
The collision situation specifying means includes
When the new second object is specified, a shape change specifying process for specifying in advance a change in the shape of the new second object at the time of the collision of the first and second objects is performed,
The object control means includes
In the object space, when the new impact event occurs, the first object is moved along the new movement trajectory, and when the first collision event of the first and second objects occurs, the specified shape is detected. A program for performing a state change process for changing the state of the new second object based on the change of the second object. In any one of Claims 1-9,
The process of changing the state of the object is as follows:
A program characterized in that it is a process for generating an image in which an object is destroyed based on a specified change in shape. In any one of Claims 1-10,
Parameter control means for setting a first collision parameter for prohibiting or permitting a change in shape at the time of collision according to a game situation is included in at least one of the objects that may cause the collision. program. In any one of Claims 1-11,
Parameter control means for setting a second collision parameter for inducing a collision in accordance with a game situation on at least one of the objects in which the collision may occur,
The movement trajectory calculating means includes
When the second collision parameter is set to induce a collision, a process of correcting the movement trajectory so as to forcibly generate a collision with the object based on a given condition is performed. Program.   A computer-readable information storage medium, wherein the program according to any one of claims 1 to 12 is stored. An image generation system for generating an image viewed by a virtual camera in an object space,
Impact movement event detection means for detecting the occurrence of an impact movement event having a characteristic that causes the position movement of the first object;
Information calculating means for calculating change information for specifying a state change in the object space caused by the impact movement event;
Object control means for controlling an object in the object space based on the change information,
The information calculation means includes
The object space of the first object that is caused by the impact based on impact information that represents at least one of the direction and strength of the impact accompanying the occurrence of the impact movement event and the position at which the impact is applied to the first object. A movement trajectory calculation means for performing a first specific calculation process for specifying in advance a movement trajectory in the vehicle and preliminarily specifying a second object intersecting the movement trajectory as a collision target object;
A collision situation specifying means for performing a first shape change specifying process for specifying in advance a change in shape of the second object at the time of occurrence of a first collision event in which the first object collides with a second object;
Including
The object control means includes
In the object space, when the impact movement event occurs, the first object is moved along the previously specified movement trajectory, and is specified when the first collision event of the first and second objects occurs. An image generation system that performs object control to change the state of the second object based on the change in shape.

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