JP2019076635A - Game program and game system - Google Patents

Abstract

To achieve throwing of a character operated by a user by intuitive operation, and to reduce a sense of incongruity given to the user in the throwing.SOLUTION: A game program allows a computer to function as virtual space generation means for generating a virtual space in which a character acts, visual line direction change means for changing a visual line direction of a virtual camera vertically according to user's operation, and throwing means for executing throwing of a throwing object by the character such that the throwing object thrown by the character reaches an arrival point separated by a specific distance from the character. The throwing means includes: motion determination means for determining a throwing motion of the character according to the visual line direction when the throwing object is thrown; and track determination means for determining a track to the arrival point of the throwing object thrown by the character according to the throwing motion.SELECTED DRAWING: Figure 6

Description

  The present invention relates to a game program and a game system for realizing a game in which a character in a virtual space operates according to a user's operation.

  BACKGROUND Conventionally, there are games in which a character in a virtual space is moved or a predetermined action is performed according to a user's operation. For example, there is a game in which an object that can be thrown to a character (hereinafter referred to as a "casting object") is thrown according to the user's operation. For example, Patent Document 1 discloses, as a game of this type, a game played on a mobile device having a touch screen, in which a character in the virtual space throws a throwing object to an enemy by the user swiping the touch screen. It is done.

  More specifically, in this game, the character in the virtual space throws the throwing object at the enemy by the user swiping a finger across the throwing object on the touch screen. The trajectory of the throwing object at that time is determined by the swipe length with respect to the touch screen and the like. Thus, the game of Patent Document 1 enables the user to intuitively determine the trajectory of the thrown throwing object by swipe operation.

JP, 2014-144239, A

  By the way, in the conventional game, there is also a game in which the throwing motion of the character is visually recognized by the user through the image on the game screen when the character operated by the user throws the throwing object. In the case of such a game, even if only the throwing trajectory is changed as in Patent Document 1, the throwing operation of the character does not match the change of the trajectory, causing the user to feel uncomfortable.

  SUMMARY OF THE INVENTION It is an object of the present invention to provide a game program and a game system capable of realizing throwing by a character operated by a user by an intuitive operation and reducing discomfort caused to the user when casting is performed. Do.

  In order to solve the above problems, a game program according to the present invention includes a computer including a display unit for displaying a virtual space photographed by a virtual camera as a game screen, and an operation unit for receiving an operation by a user. In a game system, a game program to be executed by the computer, wherein the computer is virtual space generation means for generating the virtual space in which a character acts, and the gaze direction of the virtual camera is up and down according to the user's operation. The throwing direction of the throwing object by the character such that the throwing object thrown to the character reaches an arrival point separated from the character by a predetermined distance according to the changing the view direction changing means and the user's operation. Acting as a throwing means, and said throwing means Motion determining means for determining the throwing motion of the character at the time of throwing the throwing object according to the gaze direction; and the trajectory until reaching the arrival point of the throwing object thrown by the character is the throwing motion Trajectory determining means for determining according to, the motion determining means throwing the throwing motion by the character by the upper hand when the sight line direction is directed higher than a reference direction extending from the virtual camera The motion to throw an object is determined, and when the sight line direction is directed lower than the reference direction, the character is determined to throw a throwing object by throwing.

  According to the above-mentioned game program, when selecting the upper throwing, the visual line direction of the virtual camera is directed upward, and when selecting the lower throwing, the visual line direction of the virtual camera is directed downward, The throwing motion of the character can be used properly. Furthermore, since the trajectory of the throwing object is determined according to the throwing motion, the gaze direction changed by the user operation, the throwing motion of the character, and the trajectory of the throwing object match. For this reason, it is possible to reduce a sense of discomfort given to the user when the casting is performed.

  The game program causes the computer to function as posture changing means for changing the posture of the character, and the motion determining means determines an angle of the reference direction with respect to a horizontal plane in the virtual space according to the posture of the character. May be changed. According to this game program, since the angle of the reference direction for determining the throwing motion is changed according to the posture of the character, the throwing motion of the character suitable for the posture of the character can be expressed. Thereby, it is possible to bring the character throwing into reality.

  Further, a game system according to the present invention includes a program storage unit storing the above-described game program, and a computer that executes a program stored in the program storage unit.

  According to the present invention, it is possible to provide a game program and a game system capable of realizing throwing by a character operated by the user by an intuitive operation and reducing discomfort caused to the user when casting is performed. .

It is a block diagram showing the hardware constitutions of the game system concerning one embodiment. It is a block diagram which shows the functional structure of the game device shown in FIG. FIG. 6 is a diagram for describing a range in which the gaze direction of the character can be changed and the posture of the character. It is a figure which shows the example of the game screen at the time of a character throwing a throwing object. It is a figure which shows the example of the locus | trajectory of the throwing object thrown by the character. It is a flowchart which shows the flow of the throwing process.

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

[Hardware configuration]
FIG. 1 is a block diagram showing the hardware configuration of the game system 1. The game system 1 includes a game device 2 and a server device 3. The game devices 2 can communicate with each other between the other game devices 2 and the server device 3 via a communication network NW such as the Internet or a LAN. The game apparatus 2 comprises a CPU 10 which is a computer for controlling the operation of the game apparatus 2. The CPU 10 has a disk drive 12, a memory card slot 13 and an HDD 14 and ROM 15 forming a storage unit (program storage unit). And the RAM 16 is connected.

  The disk drive 12 can be loaded with a disk-type recording medium 30 such as a DVD-ROM. A game program 30a and game data 30b according to the present embodiment are recorded on the disc type recording medium 30. The game data 30b includes various data necessary for the progress of the game, such as data necessary for forming each character and virtual space, and sound data reproduced in the game. In addition, a card type recording medium 31 can be loaded into the memory card slot 13, and save data indicating a play status such as progress of a game can be recorded according to an instruction from the CPU 10.

  The HDD 14 is a large-capacity recording medium built in the game apparatus 2 and records the game program 30a and the game data 30b read from the disk type recording medium 30, and further save data and the like. The ROM 15 is a semiconductor memory such as a mask ROM or a PROM, and stores an activation program for activating the game apparatus 2 and a program for controlling the operation when the disc type recording medium 30 is loaded. The RAM 16 is composed of a DRAM, an SRAM, etc., and reads a game program 30a to be executed by the CPU 10 and game data 30b required for the execution from the disk type recording medium 30 or the HDD 14 according to the play status of the game. Temporarily record at.

  Further, a graphic processing unit 17, an audio synthesis unit 20, a wireless communication control unit 23, and a network interface 26 are further connected to the CPU 10 via the bus 11.

  Among them, the graphic processing unit 17 draws a game image including a virtual game space, characters, etc. according to an instruction of the CPU 10. That is, the position and orientation of the virtual camera set in the virtual space, the zoom ratio (angle of view) and the like are adjusted, and the virtual space is photographed. Then, the captured image is subjected to rendering processing to generate a two-dimensional game image for display. Further, an external display (display unit) 19 is connected to the graphic processing unit 17 via the video conversion unit 18. The game image drawn by the graphic processing unit 17 is converted into a moving image format by the video conversion unit 18, and displayed on the display 19.

  The audio synthesizing unit 20 reproduces and synthesizes digital format sound data included in the game data 30 b according to an instruction of the CPU 10. Further, an external speaker 22 is connected to the audio synthesis unit 20 via the audio conversion unit 21. Therefore, the sound data reproduced and synthesized by the audio synthesizing unit 20 is decoded into an analog format by the audio converting unit 21 and output from the speaker 22 to the outside. As a result, the user playing the game can listen to the reproduced sound.

  The wireless communication control unit 23 has a wireless communication module of 2.4 GHz band, is wirelessly connected to the controller 24 attached to the game apparatus 2, and can transmit and receive data. The user can input a signal to the game apparatus 2 by operating an operation unit such as a button provided on the controller 24, and controls the operation of the character displayed on the display 19.

  The network interface 26 is for connecting the game device 2 to a communication network NW such as the Internet or LAN, and can communicate with other game devices 2 and the server device 3. Then, by connecting the game apparatus 2 to another game apparatus 2 via the communication network NW and mutually transmitting and receiving data, a plurality of characters can be displayed synchronously in the same virtual space. Therefore, multiplayer is possible in which a plurality of people jointly play a game.

[Functional configuration of game device]
FIG. 2 is a block diagram showing a functional configuration of the game device 2 provided in the game system 1. The game device 2 functions as virtual space generation means 41, gaze direction change means 42, posture change means 43, and throwing means 44 by executing the game program 30a of the present invention. In terms of hardware, such functions are CPU 10, HDD 14, ROM 15, RAM 16, graphic processing unit 17, video conversion unit 18, audio synthesis unit 20, audio conversion unit 21, radio communication control unit 23 shown in FIG. And so on.

  The virtual space generation unit 41 generates a three-dimensional virtual space having a predetermined spread. In this virtual space, there are player characters whose user can directly control their actions by the operation of the controller 24. In the following description, the player character is simply referred to as a "character".

  Further, in the virtual space, a virtual camera for imaging the virtual space is disposed. An image captured by the virtual camera is displayed on the display 19 as a game screen. The position of the virtual camera is changed following the character moving in the virtual space. In the present embodiment, the virtual camera follows the character so that the image at the viewpoint of the character (first-person viewpoint) is displayed on the display 19. That is, a virtual camera for imaging a virtual space is disposed on the head of the character. As the character moves in the virtual space, the virtual camera moves accordingly.

  The line-of-sight direction changing means 42 changes the line-of-sight direction of both the character and the virtual camera vertically and horizontally in response to the user's operation on the controller 24.

  The attitude changing means 43 changes the attitude of the character in accordance with the operation of the controller 24 by the user. In the present embodiment, the posture changing means 43 sets the posture of the character between a first posture, which is a posture in which the leg stands, and a second posture, in which the legs are bent to lower the waist. change. The height of the head of the character in the first position is higher than the height of the head of the character in the second position.

  FIG. 3 is a view for explaining the range in which the viewing direction G of the virtual camera 52 can be changed in the vertical direction and the posture of the character 51. As shown in FIG. FIG. 3A is a schematic view of the character 51 in the first attitude as viewed from the side, and FIG. 3B is a schematic view of the character 51 in the second attitude from the side. In FIGS. 3A and 3B, the virtual camera 52 disposed on the head of the character 51 is indicated by a broken line.

A range (hereinafter, referred to as “changeable range”) in which the sight line direction G of the virtual camera 52 can be changed in the vertical direction by the operation of the user is defined in advance. In the present embodiment, the changeable range is a range in which the angle θ between the line-of-sight direction G of the virtual camera 52 with respect to the horizontal plane PH meets the following equation (1).
θMIN <θ <θMAX (1)
In this specification, with respect to the angle θ between the line of sight G of the virtual camera 52 with respect to the horizontal plane PH, the time when the line of sight G inclines upward with respect to the horizontal plane PH is a positive angle, and the time when inclined downward with a negative angle. Indicated by. The angle θ indicating the sight line direction G may not be set based on the horizontal plane PH. The same applies to the angle θc and the angle α described later. In the present embodiment, for example, θMAX = 45 ° and θMIN = -45 °.

  When the attitude changing means 43 changes the attitude of the character 51 between the first attitude and the second attitude, the virtual camera 52 follows the head of the character 51 and the position of the virtual camera 52 (more specifically, the virtual The height of the virtual camera 52 from the ground plane 54 of the character 51 in the space S is changed. In the present embodiment, the changeable ranges of the sight line direction G are the same in the case where the character 51 is in the first posture and in the case where the character 51 is in the second posture.

  The throwing means 44 executes the throwing of the throwing object by the character 51 in accordance with the user's operation. The throwing object is not particularly limited as long as the character 51 can be thrown. For example, the throwing object is an item that can be thrown and owned by the character 51, such as a grenade. The throwing means 44 includes motion determining means 45 and trajectory determining means 46.

  The motion determining means 45 determines the throwing motion of the character 51 at the time of throwing of the throwing object according to the line of sight direction G. Specifically, as shown in FIGS. 3A and 3B, reference directions PA and PB extending from the virtual camera 52 to the front thereof are defined in accordance with the attitude of the character 51, respectively. The motion determination means 45 determines the throwing motion as the motion in which the character 51 throws a throwing object by a good throw when the gaze direction G is directed above the reference direction PA or PB extending from the virtual camera 52. In addition, the motion determination means 45 determines that the character 51 throws a throwing object by throwing the throwing object if the gaze direction G is directed lower than the reference direction PA or PB.

  FIG. 4 is a view showing an example of a game screen displayed on the display 19 when the character 51 throws the throwing object 53. As shown in FIG. FIG. 4A shows a game screen when the character 51 throws the throwing object 53 with a good throw, and FIG. 4B shows a game when the character 51 throws the throw with the throwing object 53. The game screen is shown. As described above, in the present embodiment, since the video at the viewpoint of the character 51 is displayed as the game screen, the entire image of the character is not displayed on the game screen. Therefore, the arm of the character is shown on the game screen when the character 51 throws the throwing object 53. The user perceives whether the throwing motion of the character 51 is a high throw or a low throw by the movement or position of the arm of the character 51 displayed on the game screen.

  Referring back to FIG. 3, the motion determination unit 45 changes the angle of the reference direction with respect to the horizontal plane PH in the virtual space S according to the posture of the character 51. In the present embodiment, as shown in FIG. 3A, the reference direction PA when the character 51 is in the first posture is inclined downward to the horizontal plane PH by a predetermined angle | θc | (for example, 10 °) Do. On the other hand, as shown in FIG. 3B, the reference direction PB when the character 51 is in the second posture is parallel to the horizontal plane PH.

  The trajectory determination means 46 determines the trajectory of the throwing object 53 thrown to the character 51. FIGS. 5A and 5B show examples of the trajectory of the throwing object 53 thrown by the character 51 in the first posture. A method of determining the trajectory of the throwing object 53 by the trajectory determination means 46 will be described with reference to FIGS. 5 (A) and 5 (B).

  In FIG. 5A, the line of sight direction G of the virtual camera 52 is directed upward from the reference direction PA. Therefore, the throwing motion of the character 51 is a good throw. Further, in FIG. 5B, the line of sight direction G of the virtual camera 52 is directed lower than the reference direction PA. For this reason, the throwing motion of the character 51 is poor throwing.

  In the present embodiment, the target arrival point of the throwing object 53 thrown by the character 51 is constant regardless of the viewing direction G. Specifically, the throwing means 44 throws the throwing object 53 by the character 51 so that the throwing object 53 thrown to the character 51 reaches the reaching point 55 separated from the character 51 by a predetermined distance L. Run. The reaching distance L from the character 51 to the reaching point 55 is the same as when the character 51 throws the throwing object 53 in the upper throwing and in the lower throwing. In the present embodiment, the reaching point 55 is a point at which the throwing object 53 thrown to the character 51 on the horizontal ground plane 54 first contacts the ground plane 54.

  The trajectory determination means 46 determines the trajectory T until reaching the arrival point 55 of the throwing object 53 thrown to the character 51 in accordance with the throwing motion of the character 51. Specifically, the storage unit stores, for each of the case where the character 51 throws with a hand and the case with a throw, the trajectory information of the throwing object 53 from being thrown by the character 51 until reaching the reaching point 55 is stored. It is done. The trajectory determination means 46 determines whether to use trajectory information for upper hand throwing or trajectory information for lower hand throwing according to the throwing motion of the character 51.

  For example, in the trajectory information for the high throw, the height H1 of the release point at which the throw object 53 leaves the hand, the initial velocity vector V1 at the release, and the size thereof when the character 51 throws the throw object 53 One or more of | V1 | and the flight angle α1 of the throwing object 53 with respect to the horizontal plane PH at the time of release may be included. In the trajectory information for poor throwing, the height H2 of the release point at which the throwing object 53 separates from the hand, the initial velocity vector V2 at release, and the size | V2 when the character 51 throws the throwing object 53 by hand. And one or more of the flight angle α2 of the throwing object 53 with respect to the horizontal plane PH at the time of release may be included.

  Note that one or more of these parameters included in the trajectory information for upper throwing and the trajectory information for lower throwing may have the same value. For example, the magnitude | V1 | of the initial velocity vector V1 in the case of the upper hand throwing and the magnitude | V2 | of the initial velocity vector V2 in the lower hand throwing may be the same. For example, the height H1 of the release point in the case of the upper hand may be the same as the height H2 of the release point in the case of the lower side.

  The throwing process performed by the throwing means 44 will be described with reference to FIG. FIG. 6 is a flowchart showing the flow of the throwing process.

  The throwing process is started by the user's operation to execute the throwing process on the controller 24. In the throwing process, the throwing means 44 first obtains posture information on the posture of the character 51 (step S1). Specifically, the throwing means 44 acquires information on whether the character 51 is in the first attitude or in the second attitude.

  Next, the throwing means 44 acquires gaze direction information on the gaze direction G of the virtual camera 52 (step S2). Specifically, the throwing means 44 acquires an angle θ between the horizontal line PH and the sight line direction G of the character 51.

  After acquiring the posture information and the line-of-sight direction information, the motion determination means 45 acquires the angle of the reference direction according to the posture information. Then, the motion determination unit 45 determines whether the sight line direction G is directed upward from the acquired reference direction (step S3). If it is determined that the line-of-sight direction G of the character 51 is directed upward (step S3: Yes), the motion determination unit 45 determines that the throwing motion is good throwing (step S4). If it is determined that the line-of-sight direction G of the character 51 is not directed upward (step S3: No), the motion determination unit 45 determines that the throwing motion is tossed (step S5).

  For example, when the motion determining unit 45 determines that the character 51 is in the first posture, the motion determining unit 45 acquires an angle θc (for example, -10 °) with respect to the horizontal plane PH of the reference direction PA corresponding to the first posture. Thereafter, it is determined whether or not the angle θ with respect to the horizontal plane PH in the line-of-sight direction G is larger than the angle θc.

  After determining the throwing motion in steps S4 and S5, the trajectory determination means 46 determines the trajectory T until reaching the arrival point 55 of the throwing object 53 thrown by the character 51 according to the throwing motion (step S6) ).

  The throwing means 44 casts the character 51 based on the throwing motion determined by the motion determining means 45 and the trajectory T of the throwing object 53 determined by the trajectory determining means 46 (step S7).

  As described above, in the game system 1 according to the present embodiment, the gaze direction G of the virtual camera 52 is directed upward when the upper throwing is selected, and the gaze of the virtual camera 52 when the downward throwing is selected. By intuitive operation of pointing the direction G downward, it is possible to properly use the throwing operation of the character 51. Furthermore, since the trajectory T of the throwing object 53 is determined according to the throwing motion, the sight line direction G changed by the user operation, the throwing motion of the character 51, and the trajectory T of the throwing object 53 match. For this reason, it is possible to reduce a sense of discomfort given to the user when the casting is performed.

  Further, in the present embodiment, since the angle θc of the reference direction for determining the throwing motion is changed according to the attitude of the character 51, the throwing motion of the character 51 suitable for the attitude of the character 51 can be expressed. Thereby, the throwing of the character 51 can be made realistic.

  The present invention is not limited to the embodiments described above, and various modifications can be made without departing from the scope of the present invention.

  For example, in the above embodiment, the first-person viewpoint game in which the image at the viewpoint of the character 51 is displayed on the display 19 is described, but the present invention is also applicable to a third-person viewpoint game. For example, when the virtual camera 52 is disposed behind the character 51 and the character 51 moves in the virtual space S, the virtual camera 52 may be moved accordingly. When the present invention is applied to a third person viewpoint game, the gaze direction changing means 42 may change the gaze direction G of the virtual camera 52 according to the user's operation, and the gaze direction of the character 51 is not changed. May be

  In the above embodiment, the gaze direction changing means 42 changes the gaze direction G of the virtual camera 52 vertically and horizontally in response to the user's operation on the controller 24, but the gaze direction G of the virtual camera 52 It may be changed in the vertical direction, and may not be changed in the horizontal direction.

  Also, the game system 1 may include a head mounted display that has a detection unit that detects the tilt of the user's head instead of the display 19 and is mounted on the user's head. In this case, the operation unit that receives a change in the line-of-sight direction G of the virtual camera 52 from the user may be a head mounted display instead of the controller 24.

  In the above embodiment, the posture changing means 43 changes the posture of the character 51 between the first posture and the second posture. However, for example, the posture in which the character 51 becomes angry, the first posture and the second posture The posture of the character 51 other than the two postures may be prepared and changed.

  Further, the method of determining the trajectory of the throwing object 53 by the trajectory determination means 46 is not limited to the method described in the above embodiment, and any method of determining according to the throwing motion may be used.

  Further, in the above embodiment, the motion determination unit 45 changes the angle of the reference direction with respect to the horizontal plane PH in the virtual space S according to the posture of the character 51, but the present invention is not limited to this. That is, the inclination angle with respect to the horizontal plane PH of the reference direction PA when the character 51 is in the first attitude may be the same as the inclination angle with respect to the horizontal plane PH of the reference direction PB when the character 51 is in the second attitude. In addition, the game device 2 may not function as the attitude changing means 43. For example, when throwing the throwing object 53, the character 51 may always throw in the first posture.

  Further, in the above embodiment, the reaching point 55 is the point where the thrown throwing object 53 first contacts the ground plane 54, but for example, the reaching point 55 is a point on the character 51 on the horizontal predetermined ground plane 54. It may be a point where the thrown throwing object 53 finally stops after rolling in contact with the ground plane 54.

  Further, the reaching distance L from the character 51 to the reaching point 55 may be the same or different between when the character 51 takes the first posture and when taking the second posture. For example, the reach distance when the character 51 takes the second posture may be shorter than the reach distance when the character 51 takes the first posture.

41: Virtual space generation means
42: Direction of sight change means
43: Attitude change means
44: Throwing method
45: Motion determination means
46: Orbit determination means

Claims (3)

It is a game program to be executed by the computer in a game system comprising a computer including a display unit for displaying a virtual space photographed by a virtual camera as a game screen and an operation unit for receiving an operation by a user,
The computer,
Virtual space generation means for generating the virtual space in which a character acts;
Line-of-sight direction changing means for changing the line-of-sight direction of the virtual camera up and down according to the user's operation, and
Throwing means for executing throwing of the throwing object by the character such that the throwing object thrown to the character reaches an arrival point separated by a predetermined distance from the character according to the user's operation;
To act as
A motion determining unit configured to determine a throwing motion of the character at the time of throwing the throwing object according to the gaze direction;
Trajectory determining means for determining a trajectory to reach the arrival point of the throwing object thrown by the character according to the throwing motion;
The motion determining means is
If the gaze direction is directed above a reference direction extending from the virtual camera, the throwing motion is determined to be a motion in which the character throws the throwing object by an upper hand throw;
A game program, wherein the motion of the character throws the throwing object by throwing the throwing object if the gaze direction is directed lower than the reference direction. The computer,
Function as posture changing means for changing the posture of the character,
The game program according to claim 1, wherein the motion determination means changes an angle of the reference direction with respect to a horizontal plane in the virtual space in accordance with an attitude of the character. A program storage unit storing the game program according to claim 1 or 2.
A game system comprising: a computer that executes a program stored in the program storage unit.

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