JP2018068760A - Game program and game system - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a game program and a game system which can generate, without giving a user a feeling of something strange, a state where an NPC like an enemy character loses the sight of a PC, and which can effectively perform a battle scene when using an enemy character that fights against the PC as an NPC.SOLUTION: The game program causes a computer to function as: virtual space generation means for generating a virtual space where a plurality of objects are arranged; PC control means for controlling the actions of a PC which moves in the virtual space in response to the operation of a user; NPC control means for controlling the actions of an NPC, a character other than the PC, which moves in the virtual space; and sight-lost state transition means for determining an NPC state transition from a position-recognized state in which the PC position is recognized to a sight-lost state in which the PC position is not recognized when a virtual line segment connecting the NPC and the PC in the virtual space contacts or crosses a particular object of the plurality of objects.SELECTED DRAWING: Figure 2

Description

  The present invention relates to a game program and a game system for realizing a game in which a player character acting in response to a user operation in a virtual space and a non-player character that is another character appear.

  Conventionally, a game in which a player character (hereinafter also referred to as “PC”) acting in response to a user's operation and a non-player character (hereinafter also referred to as “NPC”) other than the character appear in a virtual space. There is. In this type of game, for example, there is a game that changes the behavior of the NPC depending on whether or not the NPC is in a state of finding the PC.

  For example, Patent Document 1 discloses a game in which a certain range around a monster that is an NPC is set as the view range of the monster, and the PC enters the battle state from the normal state when the PC enters the view range of the NPC. It is disclosed. Therefore, in this game, when the PC moves out of the sight range of the monster, the monster “loses sight” of the PC, and when the predetermined time elapses in that state, the monster shifts from the battle state to the normal state.

JP 2010-88675 A

  However, the aspect of losing sight of the NPC disclosed in Patent Document 1 is that the NPC loses sight of the PC even if the NPC is visible from the PC if it goes outside a certain range around the NPC. An uncomfortable feeling can occur. On the other hand, if the PC is within a certain range around the NPC, even if the PC is not visible from the NPC, no loss of sight occurs. Further, when the PC is located near the boundary of the certain range, the state where the PC is found and the state of being lost are frequently switched only by moving the PC a little. Therefore, the battle state tends to be interrupted, and it is difficult to effectively produce the battle scene which is the real thrill of the action game.

  Therefore, the present invention makes it possible for a user to create a state in which an NPC such as an enemy character loses sight of the PC without causing a sense of incongruity to the user, and to effectively produce a battle scene when an enemy character that fights the PC is employed as the NPC. And it aims at providing a game system.

  In order to solve the above problems, a game program according to the present invention includes a computer that moves a virtual space in the virtual space in accordance with a user operation, a virtual space generation unit that generates a virtual space in which a plurality of objects are arranged. PC control means for controlling the action of the PC to perform, NPC control means for controlling the action of the NPC that is a character other than the PC and moves in the virtual space, and the NPC and the PC in the virtual space, When a virtual line segment connecting the PCs touches or intersects a specific object of the plurality of objects, the PC recognizes the position of the PC from the position-recognized state to the unrecognized state where the PC is not recognized. It is made to function as a losing transition determining means for determining the state transition of the NPC.

  According to the above configuration, when the virtual line segment connecting the NPC and the PC touches or intersects the specific object, the PC is in a position hidden from the NPC by the specific object, so that the user loses sight without feeling uncomfortable. Can be made.

  In the above game program, when the NPC is in the position-recognized state, the loss-of-sight transition determination unit determines that the NPC is in the position when the virtual line segment does not touch or intersect the specific object. The recognition state may be maintained. According to this configuration, even when the PC is not in the NPC field of view, the NPC does not shift from the position recognition state to the losing state when the virtual line segment connecting the NPC and the PC does not contact or intersect the specific object. It is possible to prevent a situation that is frequently lost during the battle between the PC and the NPC.

  In addition, the game program releases the NPC from the lost state when the PC enters the NPC's field of view, and the NPC state from the lost state to the position recognition state You may make it function further as a losing cancellation | release determination means which determines transfer. According to this configuration, it is possible to give reality to the situation where the NPC rediscovers the PC in the virtual space.

  In the above game program, the specific object may have an internal space into which the PC can enter. According to this configuration, when the PC is included in the specific object, the virtual line segment connecting the NPC and the PC can be surely brought into contact with or intersected with the specific object. The user can intentionally create a situation where the PC is lost.

  In addition, a game system according to 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, a game in which an NPC such as an enemy character loses sight of the PC can be generated without a sense of incongruity to the user, and a battle scene can be effectively produced when an enemy character that fights the PC is employed as the NPC. Programs and game systems can be provided.

It is a block diagram which shows the hardware constitutions of the game system which concerns on one Embodiment. It is a schematic diagram explaining the game content when an enemy character is in a normal state. It is a schematic diagram for demonstrating the game content when an enemy character is a position recognition state. It is a schematic diagram for demonstrating the game content when an enemy character will be in the state of losing sight. It is a schematic diagram for demonstrating the game content when the enemy character in a losing state tracks a player character. It is a schematic diagram for demonstrating the game content when an enemy character rediscovers a player character. It is a block diagram which shows the functional structure of the game device shown in FIG. It is a flowchart which shows the flow of a state transfer process. It is a figure for demonstrating the tracking action of NPC. It is a figure for demonstrating the tracking action of NPC when there is no predetermined trace position in a search range. It is a flowchart which shows the flow of a tracking process.

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

[Hardware configuration]
FIG. 1 is a block diagram showing a hardware configuration of the game system 1. The game system 1 includes a game device 2 and a server device 3. 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 which is a computer for controlling the operation thereof. The CPU 10 is connected to a disk drive 12, a memory card slot 13, an HDD 14 and a ROM 15 constituting a storage unit (program storage unit) via a bus 11, In addition, a RAM 16 is connected.

  The disk drive 12 can be loaded with a disk type recording medium 30 such as a DVD-ROM. On the disc-type recording medium 30, a game program 30a and game data 30b according to the present embodiment are recorded. 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 during the game. In addition, a card-type recording medium 31 can be loaded in the memory card slot 13, and save data indicating a play status such as a game progress can be recorded in accordance with an instruction from the CPU 10.

  The HDD 14 is a large-capacity recording medium built in the game apparatus 2 and records a game program 30a and game data 30b read from the disk-type recording medium 30, and save data and the like. The ROM 15 is a semiconductor memory such as a mask ROM or PROM, and stores a startup program for starting the game apparatus 2, a program for controlling an operation when the disk type recording medium 30 is loaded, and the like. The RAM 16 is composed of DRAM, SRAM, or the like, and reads a game program 30a to be executed by the CPU 10 or game data 30b necessary for the execution from the disk-type recording medium 30 or the HDD 14 in accordance with the game play status. To record temporarily.

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

  Among these, the graphic processing unit 17 draws a game image including the virtual game space, each character, and the like in accordance with an instruction from the CPU 10. In other words, the position, orientation, zoom rate (view angle), etc. of the virtual camera set in the virtual space are adjusted, and the virtual space is photographed. Then, the photographed image is rendered, and a two-dimensional game image for display is generated. In addition, an external display (display unit) 19 is connected to the graphic processing unit 17 via a 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 synthesizer 20 reproduces and synthesizes digital sound data included in the game data 30b 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 sound data reproduced and synthesized by the audio synthesizing unit 20 is decoded into an analog format by the audio converting unit 21 and outputted from the speaker 22 to the outside. As a result, the user who is playing this game can listen to the reproduced sound.

  The wireless communication control unit 23 has 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 operation unit such as a button provided in the controller 24, and controls the action of the player character displayed on the display 19.

  The network interface 26 connects the game device 2 to a communication network NW such as the Internet or a 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 transmitting / receiving data to / from each other, a plurality of player characters can be displayed in synchronization within the same virtual space. Therefore, multiplayer in which a plurality of people advance the game together is possible.

[Game Overview]
Next, an outline of a game realized by the game program 30a executed by the game apparatus 2 shown in FIG. 1 will be described with reference to FIGS.

  (A) of each figure of FIG. 2 thru | or FIG. 6 is the plane schematic diagram which looked at the virtual space S from upper direction, (b) of each figure is the schematic diagram which looked at the virtual space S from the side. Note that (b) in each figure is a view of the virtual space S viewed from a direction perpendicular to the vertical plane passing through the player character P and the enemy character N. As shown in FIGS. 2 to 6, in this game, a virtual space S having a predetermined spread is set, and the user directly controls the operation in the virtual space S by the operation of the controller 24. There is a player character P that can do this. Also, in the same virtual space S, the action cannot be directly controlled by a user operation, and an enemy character N such as a monster that is a non-player character (NPC) whose action is controlled by the CPU 10 is also present. Appears. Further, a virtual camera (not shown) for imaging the virtual space S is disposed at a predetermined position near the player character P in the virtual space S, and the virtual camera is displayed on the display 19 of the game apparatus 2. The image of the virtual space S imaged by is displayed. The game is an action game in which the user operates the player character P while fighting the enemy character N while watching the virtual space S displayed on the display 19, and subjugates this. 2 to 6, a virtual line segment L connecting the enemy character N and the player character P is indicated by a one-dot chain line.

  In this game, various objects A such as rocks and trees are appropriately arranged in the virtual space S as shown in FIG. In the example of (a) in each figure, three objects A (B, C1, C2) are shown, the object B is a bush, the object C1 is a tree, and the object C2 is a rock.

  Further, as indicated by broken lines in FIGS. 2 to 6, an area that extends in a predetermined direction from the enemy character N in the virtual space S is set as the field of view V of the enemy character N. In the present embodiment, an area that extends in a weight shape (for example, a cone shape, a pyramid shape, etc.) from the predetermined point M1 located at the head of the enemy character N toward the head of the enemy character N is displayed in the field of view of the enemy character N. Set as V. Further, as shown in FIGS. 2 to 6, the field of view V of the enemy character N is set to be blocked by the object A. In other words, the enemy character N cannot see the back side of the object A when viewed from the enemy character N.

  Further, the enemy character N is set to change the action before and after the player character P is found. FIG. 2 shows a situation when the enemy character N has not found the player character P, and FIG. 3 shows a situation when the enemy character N has found the player character P. As shown in FIG. 2, when the enemy character N has not found the player character P (before discovering the player character P), the enemy character N takes a normal action such as walking or looking around (hereinafter referred to as “the player character P”). "Normal state").

  As shown in FIG. 3, when the player character P enters the field of view V of the enemy character N, the enemy character N recognizes the position of the player character P (hereinafter referred to as “position recognition state”). When the enemy character N recognizes the position of the player character P, the enemy character N takes a battle action such as taking an attacking posture or actually attacking. Thus, when the battle between the player character P and the enemy character N is started, the player character P attacks the enemy character N using a weapon to avoid the attack of the enemy character N according to the operation of the user. The enemy character N is subjugated while adjusting the status of the player character P in battle using damage, items, etc. (for example, recovery of the sharpness of the weapon, recovery of the physical strength value of the player character P, etc.).

  In this game, the situation is such that the enemy character N loses sight of the player character P. FIG. 4 shows a situation when the enemy character N loses sight of the player character P. The object A arranged in the virtual space S includes a specific object B that causes a situation where the enemy character N loses sight of the player character P, and general objects C1 and C2 that do not cause a situation where the enemy character N loses sight of the player character P It is. When a predetermined condition is satisfied in relation to the player character P, the enemy character N, and the specific object B, loss of sight occurs, and the enemy character N loses sight of the player character P from the position recognition state (hereinafter, “lost state”). ")").

  In this game, the enemy character N that has been lost is set to take action to track the player character P. FIG. 5 shows a situation in which the enemy character N tracks the player character P that has been lost. The enemy character N that has lost its sight is set so as to gradually approach the player character P, as indicated by a two-dot chain line arrow in FIG. . While the enemy character N is lost, the player character P is not attacked by the enemy character N. For this reason, the user can cause the player character P to safely perform an action (for example, use of an item) that tends to create an opportunity to be attacked by the enemy character N while the enemy character N is in a state of losing sight. .

  FIG. 6 shows a situation where the enemy character N has rediscovered the player character P. As indicated by a two-dot chain line in FIG. 6, when the player character P enters the field of view V of the enemy character N again, the enemy character N is released from the losing state, transitions from the losing state to the position recognition state, and follows the tracking action. Stop and take battle action. Thereafter, unless the enemy character N is lost again, the position recognition state is maintained, and the enemy character N continues the fighting action or takes the escape action. For example, as shown in FIGS. 6A and 6B, even if the player character P is hidden by the general object C1 after the enemy character N rediscovers the player character P, no loss of sight occurs. Maintains combat action.

[Functional configuration of control unit]
FIG. 7 is a block diagram showing a functional configuration of the game apparatus 2 included in the game system 1. The game apparatus 2 functions as the virtual space generation means 41, the character control means 42, the state transition processing means 43, the trace position storage means 44, and the tracking processing means 45 by executing the game program 30a of the present invention. In terms of hardware, these functions include the CPU 10, HDD 14, ROM 15, RAM 16, graphic processing unit 17, video conversion unit 18, audio synthesis unit 20, audio conversion unit 21, and wireless communication control unit 23 shown in FIG. Etc.

  The virtual space generation means 41 generates a three-dimensional virtual space S that is a stage where the player character P acts. As described above, in addition to the player character P and the enemy character N in the virtual space S, NPCs other than the enemy character N (a character who becomes a friend and attacks the enemy character together, or a villager who is neither a friend nor an enemy) Etc.). Further, the virtual space generating means 41 generates the object A described above and arranges it in the virtual space S. As described above, the object A includes the specific object B and the general objects C1 and C2. In the present embodiment, the specific object B is generated so as to have an internal space in which the player character P can enter. However, the specific object B may not have an internal space where the player character P can enter.

  The character control means 42 includes player character control means (hereinafter “PC control means”) 42a and non-player character control means (hereinafter “NPC control means”) 42b. The PC control means 42a controls the action of the player character P in the virtual space S according to the user's operation. For example, the PC control unit 42a controls various operations including movement of the player character P, attack, defense, use of items, and the like according to the operation of the controller 24 by the user. The NPC control unit 42b controls the operation of NPC in the virtual space S. The NPC control means 42b controls various operations such as movement, attack, and defense of the enemy character N that battles with the player character P, for example. The NPC control means 42b also controls the actions of NPCs other than the enemy character N that battles with the player character P.

  The state transition processing means 43 processes the state transition of the enemy character N. In this embodiment, the state transition processing means 43 is in the normal state in which the above-described normal action is taken (FIG. 2), the position recognition state in which the fight action is taken (FIGS. 3 and 6), and the lost state in which the tracking action is taken (FIG. 4). , FIG. 5), the state of the enemy character N is shifted. The state transition processing unit 43 includes a position recognition determination unit 43a and a loss-of-sight transition determination unit 43b.

  The position recognition determination unit 43a determines whether or not the player character P is in the field of view V of the enemy character N when the enemy character N is not in the position recognition state (for example, in a normal state or a state of sight loss) (field of view Judgment).

  Furthermore, when the player character P enters the field of view V of the enemy character N, the position recognition determination unit 43a determines the state transition of the enemy character N from the current state to the position recognition state. In the present embodiment, when the player character P enters the field of view V of the enemy character N, the enemy character N shifts from the current state to the position recognition state. However, when the state in which the player character P is in the field of view V of the enemy character N continues for a predetermined time, the current state may be shifted to the position recognition state. When the current state of the enemy character N is a losing state, the position recognition determining unit 43a functions as a losing release determining unit that releases the losing state.

  The loss-of-sight transition determination means 43b determines whether or not the virtual line segment L connecting the enemy character N and the player character P in the virtual space S contacts or intersects the specific object B (ray determination). The virtual line segment L is not actually displayed on the display 19, but is a line segment calculated from the position information of the predetermined point M1 positioned on the enemy character N and the predetermined point M2 positioned on the player character P. is there. In the example shown in FIGS. 2 to 6, the virtual line segment L connects a predetermined point M1 located at the head of the enemy character N and a predetermined point M2 located at the head of the player character P. For example, the virtual line segment L may connect a specific point inside the body of the enemy character N and a specific point inside the body of the player character P.

  Whether the virtual line segment L touches or intersects the specific object B may be in any manner. For example, it may be determined whether or not a straight line (ray) extending from the point M1 to the point M2 contacts or intersects the object A, and a straight line (ray) extending from the point M2 to the point M1 is set to the specific object B. It may be determined whether to touch or intersect. In the present embodiment, the specific object B has an internal space in which the player character P can enter. For this reason, when the player character P is in the specific object B, the virtual line segment L between the player character P in the specific object B and the enemy character N outside the specific object B is certain to the specific object B. Is set to intersect.

  Furthermore, when the virtual line segment L is in contact with or intersects with the specific object B, the loss-of-sight transition determining unit 43b determines the state transition of the enemy character N from the position recognition state to the loss-of-sight state. Further, when the virtual line segment L does not touch or intersect the specific object B, the loss-of-sight transition determination unit 43b maintains the enemy character N in the position recognition state. In the present embodiment, when the state in which the virtual line segment L contacts or intersects the specific object B continues for a predetermined time, the enemy character N shifts from the position recognition state to the losing state. However, when the virtual line segment L contacts or intersects the specific object B, the enemy character N may shift from the position recognition state to the losing sight state. In addition, a condition other than that the virtual line segment L touches or intersects the specific object B may be included in the condition for shifting to the losing state. For example, the condition for shifting to the losing state includes that the player character P takes a specific action such as entering the internal space of the object B or takes a specific posture such as squatting on the spot. May be.

  Here, the state transition processing by the state transition processing means 43 will be described with reference to the flowchart shown in FIG.

  As shown in FIG. 8, in the state transition process, the state transition processing means 43 first sets the enemy character N to the normal state and places it in the virtual space S as an initial state (step S1, FIG. 2). reference). Then, the state transition processing means 43 determines whether or not the player character P is in the field of view V of the enemy character N. If the player character P is not in the field of view V of the enemy character N (step S2: No) ), Maintain the normal state of the enemy character N. When the player character P enters the field of view V of the enemy character N (step S2: Yes, see FIG. 3), the state transition processing means 43 shifts the enemy character N from the normal state to the position recognition state (step S3). ).

  When transitioning to the position recognition state, the state transition processing means 43 determines whether or not the state in which the virtual line segment L contacts or intersects the specific object B has continued for a predetermined time (step S4). When the state in which the virtual line segment L is in contact with or intersects with the specific object B continues for a predetermined time (step S4: Yes), the enemy character N shifts from the position recognition state to the losing state (step S5, see FIG. 4). Otherwise (step S4: No), the position recognition state of the enemy character N is maintained.

  When the state is shifted to the losing state, the tracking processing unit 45 performs a tracking process (step S6, see FIG. 5), and the enemy character N tracks the player character P that has been lost. Details of the tracking process will be described later.

  While the tracking process is being executed, the state transition processing means 43 determines whether or not the player character P has entered the field of view V of the enemy character N that has been lost (step S7). When the player character P enters the field of view V of the enemy character N that is lost (step S7: Yes, see FIG. 6), the state transition processing means 43 cancels the lost state of the enemy character N, and the enemy character N Is shifted to the position recognition state again (step S3).

  If the player character P is not in the field of view V of the enemy character N in a state of being lost (step S7: No), it is further determined whether or not the battle continuation parameter has fallen below the threshold (step S8). Here, the battle continuation parameter is a parameter for determining whether or not to continue the battle action or the pursuit action of the enemy character N, and is managed by the state transition processing means 43 of the game apparatus 2, for example. In the present embodiment, the battle continuation parameter gradually decreases with the passage of time from the value at the time when the enemy character N is in a state of losing sight, and when the enemy character N shifts to the losing state. If the battle continuation parameter is not below the threshold (Step S8: No), the tracking process is continued, and if the battle continuation parameter is below the threshold (Step S8: Yes), the enemy character N is lost and is in the normal state. (Step S1).

  Returning to FIG. 7, the trace position storage means 44 sequentially stores the position (position data) of the player character P in the virtual space S as a trace position at predetermined time intervals in the storage unit. The trace position is stored in association with the stored order and the stored time so that the stored order can be understood. In the present embodiment, nothing remains in the trace position on the virtual space S, and the trace position is only stored in the form of coordinate data in the virtual space S. However, the game apparatus 2 may actually leave an object representing a trace such as a footprint or smell of the player character P at or near the trace position in the virtual space S every predetermined time. In this case, the object representing the trace may be a transparent object so as not to be seen by the user, or may be an opaque object (for example, a footprint or a nail mark).

  Further, in the present embodiment, the trace position storage means 44 always stores the trace position at every predetermined time interval while the player character P is movable in the virtual space S. However, the present invention is not limited to this. Absent. For example, the trace position may be stored at predetermined time intervals only when the enemy character N is in the position recognition state and the sight loss state.

  In this embodiment, an upper limit is set for the number of trace positions stored in the storage unit, and the trace position storage means 44 stores the latest trace positions when storing the latest trace positions. When the number reaches the upper limit, the oldest one is deleted from the trace positions stored in the storage unit. However, the upper limit may not be set for the number of trace positions stored in the storage unit. In this case, for example, the trace position storage means 44 may delete the trace position that has passed for a fixed time from the storage unit.

  The tracking processing unit 45 causes the enemy character N to track the player character P based on the trace position stored in the storage unit when the enemy character N shifts from the position recognition state to the losing state. The tracking processing means 45 includes a trace position specifying means 45a. The trace position specifying means 45a specifies the latest stored trace position as the target position from the trace positions within the predetermined search range R including the enemy character N. The search range R is, for example, a range within a predetermined distance from the enemy character N. The size of the search range R may be changed according to the type of enemy character N. Further, it may be changed for each process of specifying the trace position by the trace position specifying means 45a. For example, even if you prepare multiple types of actions of the enemy character N (for example, a gesture to smell the ground) when trying to specify the trace position, and change the size of the search range R for each type Good. In this case, the action of the enemy character N when trying to specify the trace position may be selected by lottery, or may be selected according to the distance between the player character P and the enemy character N.

  FIG. 9 is a diagram for explaining the tracking behavior of the enemy character N when the virtual space S is viewed obliquely from above. As shown in FIGS. 9A and 9B, the player character P is in the internal space of the specific object B. 9A and 9B show trace positions t1 to t10 stored immediately before the player character P enters the specific object B. It should be noted that the trace positions t1 to t10 indicate that the smaller the number attached to t is, the newer one is stored. 9A and 9B, the search range R of the enemy character N is indicated by a broken line surrounding the enemy character N.

  FIG. 9A shows a situation immediately after the enemy character N loses sight of the player character P, that is, immediately after the enemy character N shifts from the position recognition state to the losing state. In the situation shown in FIG. 9A, the trace position specifying means 45a specifies the latest stored trace position t7 from the three trace positions t7, t8, t9 in the search range R as the target position. To do. Then, the tracking processing means 45 moves the enemy character N to the specified target position (trace position t7) as shown by an arrow in FIG. At this time, the tracking processing means 45 may move the enemy character N linearly from the current position to the specified target position (trace position t7), or another trace position detected within the search range R. It may be moved via t8 and t9.

  FIG. 9B shows a situation immediately after the enemy character N has moved to the trace position t7. Immediately after moving to the trace position t7, the trace position specifying means 45a specifies the latest stored trace position t5 from the trace positions t5, t6, t7, etc. within the search range R as the target position. Thus, the tracking processing means 45 causes the enemy character N to track the player character P by alternately repeating the specification of the trace position and the movement of the enemy character N to the specified target position.

  When the enemy character N reaches the specific object B by the tracking process, the tracking processing means 45 looks into the enemy object N in order to put the player character P in the specific object B into the field of view V. Etc. to perform a predetermined operation. As a result, when the player character P enters the field of view V of the enemy character N, the lost state of the enemy character N is released, and the state shifts again to the position recognition state. The tracking processing means 45 continues the tracking action of the enemy character N when the player character P is not in the specific object B looked into by the enemy character N. When the enemy character N reaches the specific object B by the tracking process, the specific object B reached may be changed to a general object that does not cause losing.

  Note that the user may move the player character P out of the specific object B before the enemy character N reaches the specific object B. In this case, if the player character P does not enter the field of view V of the enemy character N, the tracking behavior of the enemy character N is maintained.

  When the losing state of the enemy character N is released, the tracking behavior of the enemy character N by the tracking processing means 45 ends. Specifically, when the player character P enters the field of view V of the enemy character N or when the above-described battle continuation parameter falls below a threshold value, the enemy character N finishes the tracking action of the enemy character N.

  Next, the tracking behavior of the enemy character N in a situation different from the situation shown in FIG. 9 will be described with reference to FIG.

  FIG. 10A is a diagram for explaining the tracking behavior of the enemy character N when there is no trace position within the search range R of the enemy character N. FIG. When there is no trace position located in the search range R among the trace positions stored in the storage unit, the trace position specifying means 45a is selected from the trace positions outside the search range R before shifting to the losing state. The stored predetermined trace position is specified as the target position. In the present embodiment, when there is no trace position indicating a position within the search range R, the trace position specifying means 45a counts a predetermined number of times before the transition to the losing state (five times in the example of FIG. 10A). The trace position stored in the previous) (the trace position t5 in the example of FIG. 10A) is specified as the target position.

  However, the method for specifying the trace position when there is no trace position within the search range R is not limited to this. For example, if there is no trace position within the search range R, the trace position specifying means 45a is the latest stored trace position from among the trace positions stored before a predetermined time before shifting to the losing state. May be specified as the target position. Further, the trace position specifying means 45a may specify the trace position closest to the search range R as the target position, or may specify the trace position stored at the time of shifting to the losing state as the target position.

  FIG. 10B is a diagram for explaining the tracking behavior of the enemy character N when the enemy character N has moved to the trace position and the trace position stored newer than the trace position is not within the search range R. It is. FIG. 10B shows a situation immediately after the enemy character N has moved to the trace position t5 after the situation shown in FIG. As shown in FIG. 10 (b), after the enemy character N moves to the trace position t5, if the trace position newly stored from the trace position t5 is not within the search range R, the trace position specifying means 45a is Outside the search range R, the trace position t4 stored next to the trace position t5 specified last time is specified as the target position.

  However, the method of specifying the trace position when the enemy character N has moved to the trace position and the trace position stored more recently than the trace position is not within the search range R is not limited to this. For example, the trace position specifying means 45a may temporarily expand the search range R when the trace position stored more recently than the moved trace position t5 is not within the search range R. In this case, among the trace positions included in the enlarged search range R, the trace position that is newer than the trace position t5 and stored the oldest except for the trace position t5 may be specified as the target position. In addition, the trace position that is included in the expanded search range R and that is newly stored from the trace position t5 and that is closest to the enemy character N except for the trace position t5 is identified as the target position. May be.

  Alternatively, if the trace position newly stored from the moved trace position t5 is not within the search range R, the trace position specifying unit 45a may store the trace newly stored from the trace position t5 around the moved trace position t5. The enemy character N may be moved so as to search for the positions t1 to t4. In this case, when the enemy character N moves, the search range R is also moved, and when any of the newer trace positions t1 to t4 enters the search range R, the oldest memorized trace position is selected. You may specify as a target position.

  Next, the flow of the tracking process shown in step S6 of FIG. 8 will be described with reference to FIG. FIG. 11 is a flowchart showing the flow of tracking processing by the tracking processing means 45.

  As shown in FIG. 11, in the tracking process, the tracking processing means 45 determines whether or not there is a trace position within the search range R of the enemy character N (step T1). If there is no trace position within the search range R (step T1: No), the trace position outside the search range R is specified as a target position that is stored before moving to the losing state (step) T5, see FIG. 10 (a)).

  When there is a trace position within the search range R (step T1: Yes), the tracking processing means 45 determines whether or not there is a trace position newly stored from the trace position specified last time (step T2). When there is a newly memorized trace position from the previously identified trace position (step T2: Yes, see FIG. 9B), the latest memorized trace position from the trace positions within the search range R is targeted. The position is specified (step T3). When there is no newly stored trace position from the previously specified trace position (step T2: No, refer to FIG. 10B), a new trace position next to the previously specified trace position is specified as the target position (step T4). ).

  After specifying the trace position as the target position in steps T3, T4, and T5, the tracking processing means 45 moves the enemy character N to the specified target position (step T6). After moving the enemy character N, the tracking processing means 45 returns to determining whether or not there is a trace position within the search range R (step T1). Thus, this tracking process is repeated while the enemy character N is in a state of being lost (see steps S6 to S8 in FIG. 8).

  As described above, in the game system 1 according to this embodiment, when the virtual line segment L connecting the enemy character N and the player character P contacts or intersects the specific object B, the player character P is Since it is in a position hidden from the enemy character N, it is possible to cause the user to lose sight without feeling uncomfortable. Further, even when the player character P is not in the field of view V of the enemy character N, the sight loss state does not occur when the virtual line segment L connecting the enemy character N and the player character P does not contact or intersect the specific object B. It is possible to prevent the occurrence of a frequently lost state during the battle between the player character P and the enemy character N. For this reason, it is possible to effectively produce a battle scene which is the real thrill of the action game.

  Further, when the player character P enters the field of view V of the enemy character N, the position recognition determination unit (missing release determination unit) 43a cancels the loss state of the enemy character N, and shifts from the loss state to the position recognition state. Determine the state transition of enemy character N. For this reason, reality can be given to the situation where the enemy character N rediscovers the player character P in the virtual space S.

  Further, since the enemy character N tracks the player character P based on the trace position, the tracking processing means 45 can give reality to the tracking of the enemy character N in a state where the position of the player character P is not recognized. .

  Further, the tracking processing means 45 causes the player character P to be tracked based on the trace position when the enemy character N shifts from the position recognition state to the loss-of-sight state, so that even if the enemy character N loses sight of the player character P, A sense of urgency tracked by the character N can be given to the user.

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

  For example, in the above embodiment, the NPC appearing in the game realized by the game system 1 has been described as the enemy character N that battles with the player character P, but is not limited thereto, and does not battle with the player character P. NPC may be sufficient. In this case, the NPC in the position recognition state may be set to take an action other than the battle action.

  Further, the specific object B may not have an internal space in which the player character P can enter. However, when the specific object B has the internal space, if the player character P enters the specific object B, the virtual line segment L can be reliably contacted or intersected with the specific object B. The user can intentionally create a situation where the enemy character N loses sight of the player character P in S.

  In the above embodiment, a single player character P appearing in the virtual space S has been described. However, a game realized by the game system 1 is synchronized with a plurality of player characters in the same virtual space S. It may be a multiplayer game in which P appears.

  When there are a plurality of player characters P in the virtual space S, the trace position storage unit 44 may manage which trace position belongs to which player character. Further, when there are a plurality of player characters P in the virtual space S, the trace position storage means 44 may manage only the position and time without distinguishing each player character. Further, the target for which the trace position storage means 44 stores and manages the trace position may be all the player characters P existing in the virtual space S or a part of the player characters P.

  When there are a plurality of player characters P in the virtual space S, the tracking processing unit 45 selects one player selected from the plurality of player characters when the enemy character N shifts from the position recognition state to the losing state. The character may be tracked by the enemy character N. The player character P tracked by the enemy character N may be a player character P selected by lottery from a plurality of player characters P, or the player character P that has been the target of the enemy character N until just before losing sight. It may be.

  Alternatively, the priority indicating whether or not the enemy character N is to be tracked preferentially may be set and managed for each player character P, and the player character P having a high priority is tracked by the enemy character N. The player character P may be selected. The priority is set and managed in accordance with, for example, the magnitude of damage that each player character P has given to the enemy character N, the level of each player character P, the equipment item, the current physical strength value, and the like. For example, among the plurality of player characters P, the player character P that has damaged the enemy character N may be selected as the player character P tracked by the enemy character N, or the player character P having the highest level may be selected. It may be selected.

41 Virtual space generation means 40b PC control means 40d NPC control means 43a Position recognition determination means (Loss of release determination means)
43b Loss-of-sight transition determination means 44 Trace position storage means 45 Tracking processing means 45a Trace position specification means A Object B Specific object L Virtual line segment R Search range S Virtual space V Field of view

Claims (5)

Computer
Virtual space generation means for generating a virtual space in which a plurality of objects are arranged,
PC control means for controlling the action of a player character (hereinafter referred to as “PC”) moving in the virtual space in response to a user operation;
NPC control means for controlling the action of a non-player character (hereinafter, “NPC”) that is a character other than the PC and moves in the virtual space; and
When a virtual line segment connecting the NPC and the PC in the virtual space contacts or intersects a specific object among the plurality of objects, the position recognition state recognizes the position of the PC. Losing transition determination means for determining the transition of the state of the NPC to a losing state where the position of the PC is not recognized;
As a game program to function as. The loss-of-sight transition determination means maintains the NPC in the position recognition state when the virtual line segment does not touch or intersect the specific object when the NPC is in the position recognition state.
The game program according to claim 1. The computer,
Loss-of-miss cancellation determination means for determining the state transition of the NPC from the loss-of-sight state to the position-recognition state by releasing the loss-of-sight state of the NPC when the PC enters the field of view of the NPC.
The game program according to claim 1, further causing the game program to function.   The game program according to claim 1, wherein the specific object has an internal space into which the PC can enter. A program storage unit storing the game program according to any one of claims 1 to 4,
A game system comprising: a computer that executes a program stored in the program storage unit.

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