JP6437969B2 - Game program and game system - Google Patents

Description

  The present invention relates to a game program and a game system.

  2. Description of the Related Art Conventionally, there are games such as an action game or a role playing game that cause a player character to move in a three-dimensional virtual space in response to a user operation. In such a game, various non-player characters such as enemy characters appear, and the player character proceeds by subjugating the enemy character. The actions of the player character and the non-player character are realized by determining the position and posture (angle) of each joint of a joint model having a plurality of joints (see, for example, Patent Document 1). Various objects are arranged in the virtual space.

  In such a conventional game, when one character hits another character with an attack, the movement of both characters is stopped for a moment (the hit stop expression is used) to simulate the feeling of the attack being hit. Creating. When the attack of one character comes into contact with an object such as a wall, the action of the attack is stopped and rebounded when the contact is made.

JP 2014-61420 A

  However, as mentioned above, the problem that an action of one character hits another character or object, etc. cannot be expressed sufficiently by simply stopping or rebounding the movement. was there. In order to solve this, simply create motion data about the character's motion in a state where the attack hits another character or object separately from the attack motion and / or rebound motion, and only during the hit state period It is conceivable to reproduce the operation. However, there are a wide variety of attack modes of the character, and the location where the character abuts against another character or object varies from time to time. For this reason, it is necessary to prepare a large amount of motion data in accordance with various situations even if it is simply a character action in a hit state. Therefore, this method increases the amount of data.

  Accordingly, an object of the present invention is to provide a game program and a game system capable of realizing an expression when one character comes into contact with another character or object more realistically while suppressing an increase in data amount. To do.

  A game program according to an aspect of the present invention provides a computer with a virtual space generation unit that generates a three-dimensional virtual space in which a three-dimensional character operates, an object arrangement unit that arranges an object in the virtual space, and the character By determining the position and posture of each joint of a joint model having a plurality of joints set correspondingly, the character motion control means functions as character motion control means for controlling the motion of the character. First action executing means for executing a predetermined first action on the character, and when a predetermined part of the character is in contact with the object during the first action, the object contact point in the predetermined part is a starting point. And second action executing means for executing the second action of the character.

  The second action executing means may execute the second action with the position of the object contact portion fixed.

  The predetermined portion is a portion located on the distal end side of the first joint located at the distal end of the plurality of joints continuously arranged in the character, and the second action execution means You may determine the position and attitude | position of the at least 1 joint located in the base end side from the said 1st joint among the several joints arrange | positioned from the said object contact location.

  The first action executing means executes the first action by reproducing motion data that operates based on forward kinematics, and the second action executing means includes the plurality of joints arranged in succession. You may perform said 2nd operation | movement by producing | generating the position and attitude | position of the at least 1 joint located in the base end side from the said 1st joint based on inverse kinematics.

  The second motion execution means changes the angle of the first joint by a predetermined angle, and determines the position and posture of at least one joint on the proximal side from the first joint to follow the change in angle. May be.

  The first action includes an action in which the character holding a predetermined gripping object swings an arm that grips the gripping object, and the second action executing means is configured such that when the gripping object comes into contact with the object, You may determine the position and attitude | position of the joint contained in the said arm part from the contact location of the said holding | grip object.

  The first action executing means may generate the first action with a predetermined joint located at a central portion of the character among a plurality of joints constituting the joint model as a starting point.

  The character action control means includes third action executing means for executing a predetermined third action different from the first action after executing the second action for a predetermined period, and the third action executing means includes: You may interpolate between the position and posture of the character after execution of the second motion for the predetermined period and the position and posture of the character at the start of the third motion.

  A game system according to another aspect of the present invention includes a program storage unit that stores the game program, and a computer that executes the program stored in the program storage unit.

  According to the present invention, it is possible to realize an expression when one character comes into contact with another character or object more realistically while suppressing an increase in data amount.

It is a block diagram which shows the hardware constitutions of the game device in this Embodiment. It is a block diagram which shows the functional structure of the game device shown in FIG. It is a figure for illustrating a joint model in this embodiment. It is a figure which shows the flow of a series of operation examples of the player character in this Embodiment. FIG. 5 is a partially enlarged view showing the vicinity of an object contact portion when the player character shown in FIG. 4 shifts from a first action to a second action.

  Hereinafter, a game program and a game system according to embodiments of the present invention will be described with reference to the drawings.

[Game Overview]
In the following description, an action game executed in a home game device will be described as an example. In the action game according to the present embodiment, a three-dimensional virtual space is generated, and the user operates the player character acting in the virtual space to annihilate the enemy character, or at a predetermined position in the game space. In order to achieve a predetermined goal such as reaching, the player proceeds by fighting against the enemy character.

[Hardware configuration]
A configuration of a game device that realizes the above-described game will be described. The game system according to the present embodiment includes the following game device 2 and external devices such as a monitor (display unit) 19, a speaker 22, and a controller (operation unit) 24 connected to the game device 2. A game can be played based on the game program 30a and the game data 30b read from the type storage medium 30. However, in the following, in order to simplify the description, the game device 2 may be simply referred to.

  FIG. 1 is a block diagram showing a hardware configuration of game device 2 in the present embodiment. As shown in FIG. 1, the game apparatus 2 can communicate with another game apparatus 2 and the server apparatus 3 via a communication network NW such as the Internet or a LAN. The game apparatus 2 includes a CPU 10 that is a computer for controlling the operation thereof, and a disk drive 12, a memory card slot 13, an HDD 14 that constitutes a program storage unit, a ROM 15, and a RAM 16 are connected to the CPU 10 via a bus 11. Yes.

  Further, the graphic processing unit 17, the audio synthesis unit 20, the wireless communication control unit 23, and the network interface 25 are connected to the CPU 10 via the bus 11.

  Among these, the graphic processing unit 17 draws a game image including a game space and each character in accordance with an instruction from the CPU 10. An external monitor 19 is connected to the graphic processing unit 17 via a video conversion unit 18, and the game image drawn by the graphic processing unit 17 is converted into a moving image format by the video conversion unit 18, and the monitor 19 Is displayed.

  The audio synthesizing unit 20 reproduces and synthesizes digital game sound in accordance with instructions from the CPU 10. An external speaker 22 is connected to the audio synthesis unit 20 via an audio conversion unit 21. Therefore, the game sound reproduced and synthesized by the audio synthesizing unit 20 is decoded into an analog format by the audio converting unit 21 and further outputted from the speaker 22 to the outside.

  Furthermore, the audio synthesizing unit 20 converts the user's voice or the like input from the microphone 26 provided in the headset or the controller 24 connected to the game apparatus 2 into the digital format by the audio converting unit 21. It can be acquired. The audio synthesizing unit 20 can transmit the acquired data to the CPU 10 as input information.

  The wireless communication control unit 23 includes a 2.4 GHz band wireless communication module, and is wirelessly connected to the controller 24 attached to the game apparatus 2 so that data can be transmitted and received. The user can input a signal to the game apparatus 2 by operating an operator (described later) such as a button provided on the controller 24, and can control the movement of the player character displayed on the monitor 19. It has become. The network interface 25 connects the game apparatus 2 to a communication network NW such as the Internet or a LAN, and can communicate with another game apparatus 2 or the server apparatus 3. Then, by connecting the game apparatus 2 to another game apparatus 2 via the communication network NW and transmitting / receiving data to / from each other, a plurality of player characters can be displayed synchronously in the same game space. Thereby, in this game, multiplayer is possible in which a plurality of player characters corresponding to a plurality of users cooperate with each other to fight against enemy characters, or a plurality of users battle against each other.

[Functional configuration of game device]
FIG. 2 is a block diagram showing a functional configuration of the game apparatus 2 shown in FIG. As shown in FIG. 1, the game apparatus 2 includes a control unit 4 including a CPU 10, an HDD 14, a ROM 15, a RAM 16, a graphic processing unit 17, a video conversion unit 18, an audio synthesis unit 20, an audio conversion unit 21, a network interface 25, and the like. Act as a computer. Then, as shown in FIG. 2, the control unit 4 of the game apparatus 2 executes the game program 30a of the present invention, so that the virtual space generation means 41, the object placement means 42, the character motion control means 43, etc. Demonstrate the function. The character action control means 43 includes a first action executing means 44, a second action executing means 45, and a third action executing means 46.

  Among these, the virtual space generation means 41 generates a three-dimensional virtual space. The virtual space becomes a game space in which the player character operated by the user acts. In addition, the object placement unit 42 places various objects in the virtual space. For example, the object placement unit 42 reads data such as objects included in the game data 30b as the player character moves, and places the data in the virtual space. The object placement means 42 also places non-player characters such as player characters and enemy characters in the virtual space.

  The character motion control means 43 controls the motion of the character by determining the position and posture of each joint of a joint model having a plurality of joints set corresponding to the character. The character action control means 43 controls various actions of the player character according to the operation of the controller 24 by the user, for example. Furthermore, the character action control means 43 controls, for example, the actions of the enemy character and the non-player character that is not the enemy character (such as a character attacking the enemy character together and a character such as a villager who is neither a friend nor an enemy). .

  FIG. 3 is a diagram for illustrating a joint model in the present embodiment. FIG. 3 illustrates a player character P that holds an ax W that is a weapon (gripping object). The player character P shown in FIG. 3 is configured as a character imitating a human being. That is, the player character P includes a plurality of parts having a head 100, a neck 101, a chest 102, a waist 103, an arm 104, a leg 105, and the like. The joint model M has a plurality of joints J (including J0, J1 to J3) associated with each of these parts, and a bone B connecting two predetermined joints JJ. . The body surface of each part of the player character P is composed of a combination of many polygons, and the vertexes of each polygon are associated with one or a plurality of joints J. The action of the player character P is performed by moving the joint J (changing the position) and / or rotating the joint J by a predetermined angle (changing the posture). As the position or posture of the joint J changes, the polygons associated with the joint J are deformed in conjunction with each other, and various actions of the player character P are realized.

  Normally, the character motion control means 43 generates a motion based on a joint (in the example of FIG. 3, the hip joint J0) located at the center of the body based on predetermined motion data. A first action and a third action, which will be described later, are generated starting from the hip joint J0. Specifically, the character motion control unit 43 moves a predetermined part (for example, swings the ax W, that is, moves the position of the hand holding the ax W from the predetermined first position to the second position). First, the position and posture of the hip joint J0 are determined, and then the position of the joint (the joint of the chest 102 and the joint of the leg 105) connected to the joint J0 via the bone B and Determine posture. Thereafter, the positions and postures of the joints (joints J3, J2, J1 of the arm 104) connected to the joint J of the chest 102 via the bone B are determined.

  That is, the character motion control means 43 determines the position and posture of the joint (child joint) of the distal side portion in order from the joint (parent joint) of the central portion (base end side portion) of the player character P. The whole body movement of the player character P is determined. For example, the character motion control means 43 determines the position and posture of each joint J based on forward kinematics (FK).

  In the present embodiment and claims, `` determine the position and posture of the joint '' means that the coordinates of the joint and the angle from the predetermined position of the joint are changed as parameters, A state in which any of the position and posture of the joint does not change before and after the movement may be included.

  Further, the character motion control means 43 determines the position and posture of the joint of the central part in order from the joint of the front side part (for example, hand, foot, etc.) of the player character P, thereby Can also be determined. For example, the character motion control means 43 can determine the position and posture of each joint J based on inverse kinematics (IK). That is, in the case of IK, the relationship between the parent joint and the child joint is opposite to that of FK.

[Specific example of character motion control]
FIG. 4 is a diagram showing a flow of a series of operation examples of the player character in the present embodiment. In FIG. 4, the player character P is distinguished by assigning a different symbol depending on each action included in the series of actions. Specifically, the player character in the state of performing the following first action is Pa, the player character in the state of performing the second action is Pb, and the player character Pc in the state of performing the third action. .

  In the present embodiment, the character motion control means 43 is a case where the player character Pa swings down the ax W (first motion) and when the ax W abuts against the wall Q as a fixed object during the first motion. In addition, during the operation in which the ax W bounces back or the operation in which the ax W is pulled out (third operation), a storage operation (second operation) for making the ax W appear to bite into the wall Q is executed. For this purpose, the character action control means 43 executes the functions of the first action executing means 44, the second action executing means 45, and the third action executing means 46 in order to execute such a series of actions. To do.

  First, the first action execution means 44 executes a predetermined first action on the player character P based on the operation of the controller 24 by the user. More specifically, the first action executing means 44 reads out motion data regarding the swing-down action of the ax W stored in the game data 30b, and executes the motion data. As a result, the player character Pa performs an action of swinging down the arm 104 holding the ax W. The first action executing means 44 generates the first action starting from a predetermined joint (waist joint J0) located at the center of the plurality of joints J constituting the joint model M. For example, the motion data for the first operation is configured as data that operates based on FK.

  Whether or not the character motion control means 43 is in contact with a predetermined object (a wall Q in the example of FIG. 4) at a predetermined timing (for example, every frame) during the first motion. Determine. In the present embodiment, the predetermined part is an ax W gripped by the player character Pa. As described above, in the “predetermined part of the character” in the present embodiment and claims, not only the character body but also a gripping object (for example, a weapon, a bat, etc.) or a character gripped by the character is attached. Wearing objects (eg, armor, gloves, etc.) may be included.

  When it is determined that the ax W is in contact with the wall Q, the second action executing means 45 executes the second action on the player character Pb. More specifically, the second action executing means 45 reads the motion data regarding the accumulation action of the ax W stored in the game data 30b, and executes the motion data. As a result, the player character Pb performs an action such that power is accumulated in the arm portion that holds the ax W.

  FIG. 5 is a partially enlarged view showing the vicinity of the object contact portion when the player character shown in FIG. 4 shifts from the first action to the second action. The second operation is configured as an operation starting from the object contact portion T in the ax W. More specifically, the second action execution unit 45 executes the second action with the position of the object contact portion T fixed. Further, the second motion executing means 45 performs the second motion from the first joint (wrist joint) J1 positioned at the tip of the arm portion 104 that holds the ax W among the plurality of joints J constituting the joint model M. The position and posture of at least one joint (for example, the elbow joint J2 and the shoulder joint J3) on the base end side are determined with the object contact point T as a starting point.

  The second action executing means 45 changes the angle of the joint closest to the object contact location T (that is, the wrist joint J1 of the hand holding the ax W) by a predetermined angle θ, and at least one located on the proximal side from the angle θ. The positions and postures of two joints (for example, the elbow joint J2 and the shoulder joint J3) are determined so as to follow the angle change. For example, as for the motion data for the second motion, for the wrist joint J1, the angle of the wrist joint J1 (the angle formed by the bone B1 and the bone B2) at the time of contact with the wall Q is subtracted by a predetermined angle θ. The elbow joint J2 and the shoulder joint J3 are configured as data that operates based on IK.

  In other words, in the present embodiment, the first operation executing unit 44 executes the first operation by reproducing motion data that operates based on FK, and the second operation executing unit 45 is continuously arranged. The second operation is executed by generating, based on IK, the positions and postures of the joints J2 and J3 located on the proximal side of the first joint (wrist joint) J1 among the plurality of joints J1 to J3.

  The second motion executing means 45 acquires the position of the object contact portion T when contacting the wall Q. Then, the second motion executing means 45 subtracts a predetermined angle θ from the angle of the wrist joint J1 when contacting the wall Q, as shown by the arm portion (indicated by an imaginary line) of the player character Pa shown in FIG. The ax W and the bones B1 and B2 are moved to the positions. At this time, maintaining the position of the object contact portion T on the ax W (that is, the ax W is in contact with the wall Q at the same position) is set as a constraint condition. Accordingly, like the arm portion (shown by a broken line) of the player character Pb shown in FIG. 5, the ax W and the bones B1 and B2 move to a position rotated by a predetermined angle θ around the object contact portion T. As a result, the position and posture of the wrist joint J1 and the position of the elbow joint J2 are determined.

  The second action executing means 45 determines the posture of the elbow joint J2 and the position and posture of the shoulder joint J3 according to the movement of the ax W and the bones B1 and B2. At this time, the second action executing means 45 determines the position and posture of the joint (such as the hip joint J0) other than the arm portion 104 of the player character Pb, starting from the hip joint J0 (based on FK), and the elbow The posture of the joint J2 and the position and posture of the shoulder joint J3 may be determined from the object contact point T as a starting point (based on IK) so that the arm 104 is smoothly connected to the chest 102.

  According to the above aspect, since the second operation starting from the object contact point T is executed, when the ax W bites into the wall Q compared to the conventional aspect in which only hit stop is performed. Etc. can be made to feel more realistic by the user. Moreover, since the second motion is a motion starting from the object contact location T, one motion data (in the above example, the wrist joint J1 is used regardless of the character's attack mode and the position of the object contact location T). And the position and posture of the joints J2 and J3 located at the base end from the wrist joint J1 are determined based on the IK). The second operation can be executed according to the contact state. Therefore, a more realistic expression can be realized while suppressing an increase in the data amount. Further, by fixing the object contact portion T, the calculation for determining the position and posture of each joint can be further simplified.

  After executing the second action for a predetermined period (or after the end of the second action), the third action executing means 46 executes a predetermined third action that is different from the first action, starting from the hip joint J0. More specifically, the third motion execution means 46 reads motion data regarding the motion of the ax W bounced back from the game data 30b and executes the motion data. As a result, the player character Pc performs a warping action due to the bounced back reaction after the ax W comes into contact with the wall Q. The third motion executing means 46 generates the third motion starting from the hip joint J0 among the plurality of joints J constituting the joint model M. For example, the motion data for the third operation is configured as data that operates based on FK.

  In the motion data of the third motion, the position and posture (third motion initial value) of each joint J at the start time of the third motion are determined in advance. The third action executing means 46 interpolates between the position and posture of the player character Pb after the predetermined period of execution of the second action and the position and posture of the player character Pc at the start of the third action. The movement of the character P is controlled. In such an interpolation operation, the third motion execution means 46 may determine the position and posture of each joint starting from the wrist joint J1 (based on IK), or starting from the waist joint J0 ( (Based on FK).

  For example, as the third action executed based on the IK, the third action executing means 46 may execute an action in which the player character P pulls out the ax W stuck in the wall Q. The player character P repeats the action of pulling out the ax W (the action of trying to pull out but not coming out) a plurality of times in a state where the ax W is located at the position where the ax W is stuck in the wall Q (object contact portion T). Such an action is determined based on the IK starting from the object contact point T. As a result, it is possible to express a realistic action in which the ax W does not come off the wall Q. Further thereafter, the character action control means 43 may execute the action of the player character P based on the FK when the ax W comes off the wall Q.

  Further, after the second action, the player character P may perform an action of releasing the hand from the ax W in a state where it is stuck in the wall Q. For example, when an operation for moving the player character P is input by the user's operation after the second action, the player character P performs an action of releasing the hand from the ax W based on FK and moves in the virtual space. You may perform the operation | movement to perform based on FK. In this case, when the player character P returns to the position of the ax W in the state where it is stabbed in the wall Q again and a predetermined operation is performed by the user, the player character P performs an action of grasping the ax W based on FK.

  That is, the third motion executing means 46 controls the motion of the player character P based on IK when not moving the joint position at the tip of the player character P, and moves the joint position at the tip of the player character P. Controls the action of the player character P based on FK.

  Thereby, switching from the second operation to the third operation can be performed smoothly without giving a sense of incongruity to the user.

[Modification]
Although the embodiments of the present invention have been described above, the present invention is not limited to the above-described embodiments, and various improvements, changes, and modifications can be made without departing from the spirit of the present invention.

  For example, in the embodiment described above, a series of actions in the player character P has been described, but the present invention can also be applied to a series of actions in a non-player character such as an enemy character.

  Moreover, in the said embodiment, although illustrated about the operation | movement (attack operation | movement) where the player character P swings down an ax, the applicable operation | movement is not restricted to this. For example, when the character holding the bat or racket swings the bat or racket and hits the ball, the same action as the second action is applied as the action of the arm of the character holding the bat or racket. Also good. Thereby, an exaggerated expression about the ball hitting the bat or the racket can be realized. Further, for example, when a character wearing a baseball glove catches the ball, an operation similar to the second operation may be applied as an operation in which the arm portion of the person wearing the glove is pushed.

  Further, when the character's hand or foot directly touches the object, the same action as the second action may be applied. In this way, the predetermined part of the character that is the starting point of the second action can be set in various ways.

  As described above, the object that contacts the predetermined part of the character may be a fixed object such as the wall Q, a tree, or a pillar, or may be a moving object such as a ball or another character. In the case of a moving object, the first action of the character may include a stationary state such as holding a glove.

  In the above embodiment, the plurality of joints J included in the joint model M may imitate human joints, or may have more or fewer joints such as monsters. That is, the characters to which the above motion can be applied include not only human characters but also various monsters.

  In the above embodiment, the predetermined angle θ of the wrist joint J1 that is set in the second operation may always be a fixed value or may be a different value depending on conditions. For example, a different angle may be set according to the material (other character, wall, tree, etc.) of the abutting object. Also, the type of weapon (sword or ax, the same ax, a big ax or a small ax, etc.), the type of attack (such as a large attack with slow motion and high attack power or a small attack with fast motion and low attack power), Different angles may be set according to the character's ability (attack, physical strength, male character, female character, etc.) and the like.

  Further, in the above embodiment, the mode of fixing the position of the object contact portion at the time of the second motion is illustrated, but after the contact, the position of the object contact portion (the position to be the starting point of the second motion) ) May be moved. In this case, it is also possible to move in the same manner while maintaining the state where the contact portion of the object and the character is in contact (moving so that the relative position of the object contact portion in the object and the character does not change).

  After the second action or the third action, the object placement unit 42 may affix a texture or the like that expresses a scratch at a position corresponding to the object contact location T in the object such as the wall W. The texture expressing the wound may be different depending on the type of weapon or the type of attack.

  Moreover, although the action game was illustrated in the said embodiment, the said operation | movement aspect about a three-dimensional character is applied to various games using a three-dimensional virtual space, such as a role playing game, a simulation game, or a shooting game. Is possible.

  Further, although the stationary game apparatus has been described in the above embodiment, the present invention can also be suitably applied to computers such as portable game apparatuses, mobile phones, and personal computers.

  The present invention is useful for realizing an expression when one character comes into contact with another character or an object more realistically while suppressing an increase in data amount.

2 game device 30a game program 30b game data 41 virtual space generation means 42 object placement means 43 character action control means 44 first action execution means 45 second action execution means 46 third action execution means J joint J0 waist joint J1 wrist joint M Joint model P, Pa to Pc Player character

Claims (2)

Computer
Virtual space generation means for generating a three-dimensional virtual space in which a three-dimensional character operates;
A character that controls the movement of the character by determining an object placement means for placing an object in the virtual space, and a position and posture of each joint of a joint model having a plurality of joints set corresponding to the character. Function as an operation control means,
The character motion control means includes
First action executing means for executing a predetermined first action on the character;
A second action executing means for executing the second action of the character starting from the object contact point in the predetermined part when a predetermined part of the character is in contact with the object during the first action; , only including,
The first action execution means generates the first action from a predetermined joint located at a central portion of the character among a plurality of joints constituting the joint model,
The character action control means includes a third action executing means for executing a third action different from the first action with the predetermined joint as a starting point after executing the second action for a predetermined period of time.
The game program for interpolating between the position and posture of the character after execution of the second motion for the predetermined period and the position and posture of the character at the start of the third motion . A program storage unit storing the game program according to claim 1 ;
A game system comprising: a computer that executes a program stored in the program storage unit.

Images