JP2016146864A - Game program and game device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To readily determine an obstacle to a player object when viewed from a virtual camera.SOLUTION: A game program 1 causes a computer to function as: a player object controller 14 for controlling a player object to act in a game space on the basis of operational information input from a player; a non-player object controller 15 for generating and disposing a non-player object in the game space; and a rendering part 20 for converting the game space into image data as viewed from a virtual camera provided in the game space and rendering the converted data. The rendering part 20 includes an obstacle determiner 21 for determining the non-player object to be an obstacle, if the player object is opposed to the non-player object and if an angle of a normal line of the belly of the player object and a line of sight of the virtual camera is larger than a predetermined angle.SELECTED DRAWING: Figure 1

Description

  The present invention relates to a game program and a game apparatus for drawing an object in a virtual game space.

  In a game in which a player operates a player object placed in a three-dimensional virtual game space, a virtual camera is provided in the virtual game space, and the game space viewed from the virtual camera is converted into two-dimensional image data and rendered. The At this time, a method is known in which a virtual camera is arranged above and behind the player object and a game space viewed from the virtual camera is drawn. In this method, the player can easily check the surroundings of the player character and can play a game with a sense of presence from a viewpoint close to the player character. In addition, in order to increase the sense of presence in the game space, the virtual camera is not limited to the upper and rear sides of the player object, and may be disposed in various places.

  However, when an obstacle such as an enemy character exists between the player object and the virtual camera, the obstacle prevents the player from confirming the player object, which makes it difficult to operate.

  Therefore, when there is an obstacle between the virtual camera and the player object, there is a method of making the player object easy to see through the obstacle (see, for example, Patent Document 1). In the method described in Patent Document 1, when an obstacle object exists on the line connecting the virtual camera and the player object, the obstacle is transmitted and drawn.

Japanese Patent No. 3141737

  However, in the method described in Patent Document 1, it is necessary to compare the three positional relationships of the virtual camera, the player object, and the obstacle, and the processing may be complicated.

  Accordingly, an object of the present invention is to provide a game program and a game apparatus that easily determine an obstacle for a player when viewed from a virtual camera in a virtual game space.

  In order to solve the above problems, a game program according to a feature of the present invention generates a player object in a virtual game space using a computer, and places the player object in the game space based on operation information input by the player. A player object control means to be activated, a non-player object control means for generating and arranging a non-player object in the game space, and the game space is converted into image data viewed from a virtual camera provided in the game space and rendered. Function as a drawing means. When the player object faces the non-player object and the angle formed by the normal line of the abdomen of the player object and the line of sight of the virtual camera is larger than a predetermined angle, the drawing means An obstacle determination unit that determines that the object is an obstacle is provided.

  According to the present invention, it is possible to provide a game program and a game apparatus that easily determine an obstacle for a player when viewed from a virtual camera in a virtual game space.

FIG. 1 is a functional block diagram of the game device according to the embodiment of the present invention. FIG. 2 is a diagram for explaining a hardware configuration of the game device according to the embodiment of the present invention. FIG. 3 is a diagram for explaining a coordinate system of the virtual game space according to the embodiment of the present invention. FIG. 4 is a diagram for explaining an angle formed by the normal line of the abdomen of the player object in the virtual game space and the line of sight of the virtual camera. FIG. 5 is a diagram illustrating a case where the normal line of the abdomen of the player object and the line of sight of the camera are facing the same direction. FIG. 6 is a diagram illustrating an example of a game screen when the normal line of the abdomen of the player object and the line of sight of the camera are facing the same direction. FIG. 7 is a diagram illustrating a case where the normal line of the abdomen of the player object and the line of sight of the camera face each other. FIG. 8 is a diagram for explaining an example of a game screen when the normal line of the abdomen of the player object and the line of sight of the camera are opposed to each other. FIG. 9 is a diagram illustrating a case where the normal line of the abdomen of the player object and the line of sight of the camera face each other, and the virtual camera is located inside the non-player object. FIG. 10 is a diagram for explaining an example of the game screen when the normal line of the abdomen of the player object and the line of sight of the camera face each other and the virtual camera is located inside the non-player object. FIG. 11 is a flowchart for explaining an example of the non-player object drawing process by the non-player object drawing unit.

  Next, embodiments of the present invention will be described with reference to the drawings. In the following description of the drawings, the same or similar parts are denoted by the same or similar reference numerals.

  The game program 1 according to the embodiment of the present invention is executed by a computer such as the game apparatus 3 including the CPU 31 to provide a game to the player. When the computer executes the game program 1, each unit shown in FIG. 1 is mounted on the CPU 31.

  In the game program 1 according to the embodiment of the present invention, a game in which a player object arranged in a virtual game space correlates with a non-player object proceeds. The game program 1 causes the player to input operation contents to the game apparatus 3 based on image data viewed from a virtual camera provided in a virtual game space. In the image data viewed from the virtual camera, the game program 1 causes the non-player object to be drawn transparently when the non-player object becomes an obstacle when the player object is viewed from the virtual camera.

  Although the game program 1 which concerns on embodiment of this invention assumes a battle game, an action game, an adventure game, etc., it is not restricted to this. In the embodiment of the present invention, the case where the game program 1 is operated by one player is described, but the game program 1 may be applied to a game operated by two players. In a game operated by two players, a game space from each virtual camera provided corresponding to each player object is drawn on the game screen of each player.

(Hardware configuration)
With reference to FIG. 2, a hardware configuration of game device 3 according to the embodiment of the present invention will be described. The game apparatus 3 connects a CPU 31, a RAM 32, a ROM 33, a storage 34, an image processing unit 35, an input interface 36, a sound processing unit 37, and a communication unit 38 to the bus 30. The RAM 32, the ROM 33, and the storage 34 store the game program 1 according to the embodiment of the present invention and data related to the progress and display of the game. A display device 40 such as a liquid crystal display is connected to the image processing unit 35. The display device 40 displays the game screen generated by the image processing unit 35. An input device 41 such as a button, a mouse, and a keyboard is connected to the input interface 36. The input device 41 passes the operation content of the player to the input interface 36. A speaker 42 is connected to the sound processing unit 37. The speaker 42 outputs sound such as sound effects and BGM that are converted into analog signals by the sound processing unit 37 and amplified.

  The game apparatus 3 may be connected to another game apparatus or game server apparatus via the communication unit 38 in a wired or wireless manner. The communication unit 38 transmits processing data from the CPU 31 to other devices, and inputs processing data received from other devices to the CPU 31.

  In the example illustrated in FIG. 2, the case where the display device 40 and the input device 41 are individually provided has been described. However, instead of or in addition to the display device 40 and the input device 41, a touch panel (not illustrated) is provided. It may be provided. The touch panel displays a game screen generated by the image processing unit 35 and passes the contact coordinates where the player touches the touch panel to the input interface 36.

(Functional configuration)
As shown in FIG. 1, the CPU 31 includes a control unit 10 and a drawing unit 20. The control unit 10 controls the progress of the game in cooperation with each unit included in the control unit 10, and outputs an instruction to draw the game screen to the drawing unit 20. The drawing unit 20 draws a game screen according to an instruction from the control unit 10 and displays the game screen on the display device 40 via the image processing unit 35.

  The control unit 10 includes an operation detection unit 11, a virtual space generation unit 12, a virtual camera control unit 13, a player object control unit 14, and a non-player object control unit 15.

  The operation detection unit 11 acquires the operation content of the player from the input interface 36 and passes the operation content to the control unit 10.

  The virtual space generation unit 12 generates a three-dimensional virtual game space according to a predetermined game progress. In the virtual game space, a player object operated and controlled by a player and a non-player object controlled by a computer are arranged.

  The virtual camera control unit 13 controls the virtual camera C provided in the virtual game space. A game space, a player object, a non-player object, and the like photographed from the virtual camera C are converted into two-dimensional image data by the drawing unit 2 described later and displayed on the display device 40. In the embodiment of the present invention, the virtual camera control unit 13 is configured to provide the virtual camera C at various positions such as the front and sides of the player object, not only above and behind the player object, according to the progress of the game. Be controlled. Further, the position and direction of the virtual camera C may be controlled by a player's operation.

  The player object control unit 14 generates a player object in the game space and activates the player object in the game space based on operation information input by the player. The non-player object control unit 15 generates and arranges non-player objects in the game space. The non-player object may be a still life such as a rock or a tree, or may be an animal such as an enemy character. When the non-player object is an animal, the non-player object control unit 15 may activate the non-player object in the game space based on predetermined processing information. The “predetermined processing information” is a predetermined algorithm such as AI (Artificial Intelligence), and the non-player object is activated asynchronously with the operation information input by the player and correlated with the movement of the player object. Let

  In the embodiment of the present invention, the non-player object is a motion object of the player object. The game progresses while the player object and the non-player object are correlated with each other. At this time, the control unit 10 stores the identifier of the non-player object that is the movement target of the player object, the action type of the player object, and the like in association with each other. Enter.

  The drawing unit 20 converts the game space into image data viewed from a virtual camera provided in the game space, and draws the image data. The drawing unit 20 draws the virtual game space, the player object, and the non-player object viewed from the virtual camera C by converting them into two-dimensional image data by projection conversion. The drawing unit 20 includes an obstacle determination unit 21 that determines whether or not a predetermined non-player object is an obstacle, and a non-player object drawing unit 22 that draws the non-player object. When the obstacle determination unit 21 determines that the non-player object is an obstacle, the non-player object drawing unit 22 performs transparent processing on the non-player object and draws it.

  The obstacle determination unit 21 determines whether (i) the player object is facing the non-player object, or (ii) the angle formed by the normal line H of the abdomen of the player object and the line of sight V of the virtual camera C is predetermined. It is determined whether the angle is larger than the angle. The obstacle determination unit 21 determines that the non-player object to be operated is an obstacle when the conditions (i) and (ii) are satisfied.

  First, the condition “(i) the player object faces the non-player object” will be described.

  In the embodiment of the present invention, “opposing” means that the player object faces the non-player object side, and the non-player object is located in the normal direction of the abdomen of the player object. In the embodiment of the present invention, “opposing” means not only the state in which the player object and the non-player object face each other in front but also at least a part of the front surface of the player object regardless of the orientation of the non-player object. It may include a state in which the object is oriented. Further, “opposing” may include not only a case where the player object and the non-player object are in contact but also a case where the player object and the non-player object are not in contact.

  In the embodiment of the present invention, the obstacle determination unit 21 determines that the player object is “opposing” when the player object is “opposing” the non-player object. The “opposing action” is appropriately set depending on the type of player object or non-player object, the type of game, and the like. For example, in the case of an action game in which a player object and a non-player object battle, the non-player object is considered to be an enemy object. In this case, the “opposing action” means an action in which the player object comes into contact with the enemy object, such as a player object wrestling with an enemy object, or a player object climbing on the enemy object, or a weapon is directed to the enemy object. It is conceivable that the player object faces the enemy object without touching the enemy object, such as throwing a weapon at the enemy object.

  On the other hand, in the case of an adventure game in which a player object is active using a non-player object, the non-player object is considered to be a still life object such as a rock or a tree. In this case, the “opposing motion” means a motion in which the player object comes into contact with the still-life object, such as the player object climbing on the still-life object, holding the still-life object, or hiding behind the still-life object, In addition, it is conceivable that the player object opposes without touching the still life object, such as throwing another object or using magic.

  Next, the condition “(ii) the angle formed by the normal line H of the abdomen of the player object and the line of sight V of the virtual camera C is greater than a predetermined angle” will be described.

  The abdomen normal H is a normal to the abdomen bone obtained when the player object is generated, and the direction of the normal corresponds to the forward direction of the abdomen position of the player object. The line of sight V of the virtual camera C is the shooting direction of the virtual camera, and is a parameter for projection conversion processing by the drawing unit 20. The predetermined angle is set within a range of 180 degrees to 91 degrees, and more preferably within a range of 180 degrees to 120 degrees. This predetermined angle may be appropriately set according to the shape of the player character, or may be variably set according to the action type of the player character.

  With reference to FIG. 3, the coordinate system of the virtual game space in the embodiment of the present invention will be described. The line of sight V direction of the virtual camera C is taken as the Z-axis direction. On the plane (screen) perpendicular to the Z-axis direction, the vertical direction of the screen (vertical direction in FIG. 3) is the Y-axis direction, and the horizontal direction (front or back direction in FIG. 3) is the X-axis direction. To do.

  The diagram shown in FIG. 4 illustrates the angle formed by the normal line H of the abdomen of the player object P and the line of sight V of the virtual camera C in the virtual game space. 4 shows a state in which the virtual camera C and the player object are projected on the YZ plane in the game space shown in FIG.

  4A shows a case where the normal H and the line of sight V are in the same direction, that is, as shown in FIG. 4B, the angle α formed between the normal H and the line of sight V is 0 degree. Show the case. When the player object P faces the non-player object O (not shown), the non-player object O is located at the tip of the normal line H of the player object P (on the right side in FIG. 4A). At this time, when viewed from the virtual camera C, the player object P is positioned in front of the game space, and the non-player object O is positioned in the back. Therefore, the non-player object O does not become an obstacle in the image data obtained by converting the game space viewed from the virtual camera C. Therefore, even if the non-player object O is not transparently processed, the player can confirm the player object P.

  FIG. 4C shows the case where the normal H and the line of sight V are directed in opposite directions (opposite directions), that is, the angle formed between the normal H and the line of sight V as shown in FIG. The case where α is 180 degrees is shown. When the player object P faces the non-player object O, the non-player object O is located at the tip of the normal line H of the player object P (left side in FIG. 4C). At this time, when viewed from the virtual camera C, the non-player object O is positioned in front of the game space and the player object P is positioned in the back, so the non-player object O has transformed the game space viewed from the virtual camera C. It becomes an obstacle in image data. Therefore, the player can confirm the player object P by the non-player object O being transparently processed.

  FIG. 4E shows a case where the normal H is obliquely upward with respect to the line of sight V, that is, as shown in FIG. 4F, the angle α formed between the normal H and the line of sight V is 91. A case where the angle is not less than 180 degrees and less than 180 degrees is shown. When the player object P faces the non-player object O, the non-player object O is located at the tip of the normal line H of the player object P (upper left side in FIG. 4E). At this time, when viewed from the virtual camera C, the non-player object O is positioned in front of the game space and the player object P is positioned in the back, so the non-player object O has transformed the game space viewed from the virtual camera C. It becomes an obstacle in image data. Therefore, the player can confirm the player object P by the non-player object O being transparently processed.

  FIG. 4G shows the case where the normal H is directed upward of the line of sight V, that is, the angle α formed by the normal H and the line of sight V is 90 degrees as shown in FIG. Indicates. When the player object P faces the non-player object O, the non-player object O is located at the tip of the normal line H of the player object P (upper side in FIG. 4E). At this time, when viewed from the virtual camera C, the non-player object O is positioned above the game space, and the player object P is positioned below the non-player object O. Therefore, the non-player object O is viewed from the virtual camera C. It does not become an obstacle in the image data converted from the game space. Therefore, even if the non-player object O is not transparently processed, the player can confirm the player object P.

  Processing of the drawing unit 20 according to the embodiment of the present invention will be described with reference to FIGS. 5, 7 and 9 show a state in which the virtual camera C and the player object are projected onto the YZ plane in the coordinate system shown in FIG. 6, 8, and 10 are two-dimensional image data obtained by projecting and transforming the game space, the player object P, and the non-player object O by the drawing unit 20. In FIG. 5 to FIG. 10, the player object P that cannot be confirmed by the obstacle is indicated by a dotted line, and the non-player object O that has been subjected to the transparent process is indicated by a two-dot chain line. In the example shown in FIGS. 5 to 10, a case will be described in which the player object P is performing an opposing action of “clamping” against the non-player object O.

  FIG. 5 shows a case where the normal line H of the player object P and the line of sight V of the virtual camera C are in the same direction, and the angle formed by the normal line H and the line of sight V is 0 degrees. In this case, since the player object P is positioned in front of the line of sight V and the non-player object O is positioned in the back, the player object P can be confirmed from the virtual camera C as shown in FIG.

  In FIG. 7A, the normal line H of the player object P and the line of sight V of the virtual camera C are directed in opposite directions (opposite directions), and the angle formed between the normal line H and the line of sight V is 180 degrees. Show the case. In this case, since the non-player object O is positioned in front of the line of sight V and the player object P is positioned in the back, the player object P cannot be confirmed from the virtual camera C as shown in FIG. Accordingly, as shown in FIGS. 7B and 8B, the player object P can be confirmed on the line of sight V from the virtual camera C by performing the transparent process on the non-player object O.

  In FIG. 9A, the virtual camera C is provided inside the non-player object O, and the normal line H of the player object P and the line of sight V of the virtual camera C face in opposite directions (opposite directions). The angle between the normal H and the line of sight V is 180 degrees. In this case, since the surface of the non-player object O to which the player object P clings is positioned in front of the line of sight V and the player object P is positioned in the back, the player object P and the non-player are positioned as shown in FIG. The body part and the right foot part where the object O overlaps cannot confirm the player object P by the line of sight V from the virtual camera C. Therefore, as shown in FIG. 9B and FIG. 10B, the player object P can be confirmed on the line of sight V from the virtual camera C by performing the transparent process on the non-player object O.

  When the obstacle determining unit 21 determines that the non-player object is an obstacle, the non-player object drawing unit 22 repeats the process of increasing the transparency of the non-player object in stages and drawing the non-player object. . After the transparency of the non-player object reaches a predetermined transparency, the obstacle determination unit 21 determines whether the non-player object is an obstacle. When the non-player object is an obstacle, the non-player object drawing unit 22 performs the transparent process on the non-player object and draws it with a predetermined transparency. On the other hand, when the non-player object is not an obstacle, the transparency of the non-player object is lowered stepwise and the process of drawing the non-player object is repeated.

  In the embodiment of the present invention, the non-player object drawing unit 22 gradually increases the transparency of the non-player object, for example, within a range from a default value (for example, 0%) to a maximum value (for example, 60%). A non-player object is drawn by lowering or lowering.

  When the obstacle determining unit 21 determines that the non-player object is an obstacle, the non-player object drawing unit 22 draws a plurality of continuous frame images by gradually increasing the transparency to a predetermined transparency. For example, when the maximum value is 60% and 30 frame images are drawn per second, the non-player object drawing unit 22 increases the transparency by 2% per frame image. The non-player object drawing unit 22 draws a frame image that changes in units of 2% from 0% transparency to 60% transparency over 1 second. In the meantime, even if a state where the non-player object is not an obstacle occurs, the non-player object drawing unit 22 continues the process of drawing the non-player object by increasing the transparency of the non-player object up to the maximum value.

  Thereafter, when the transparency increases to the maximum value, the obstacle determination unit 21 determines whether or not the non-player object is an obstacle. In the case of an obstacle, the non-player object drawing unit 22 continues drawing with the maximum transparency. If it is not an obstacle, the non-player object drawing unit 22 starts a process of reducing the transparency of the non-player object. For example, when the maximum value is 60% and 30 frame images are drawn per second, the non-player object drawing unit 22 decreases the frame image by 2% per frame image. The non-player object drawing unit 22 draws a frame image that changes in units of 2% from 60% transparency to 0% transparency over 1 second. In the meantime, even if a state in which the non-player object becomes an obstacle occurs, the non-player object drawing unit 22 continues the process of drawing the non-player object with the transparency of the non-player object lowered stepwise to the default value.

  Here, the maximum value of the transparency in the transparency process and the non-transparency process, the number of frames required to change the transparency, the amount of change in the transparency per frame, and the like are set as appropriate.

  As described above, the non-player object drawing unit 22 according to the embodiment of the present invention performs the obstacle determination process by the obstacle determination unit 21 until the non-player object starts or completes the transparent process or the non-transparent process. Continue the transparent or non-transparent process without executing it. Thereby, the transparency of the non-player object is suddenly switched, and it is possible to avoid the player from being difficult to see, and to reduce the processing load on the CPU 31.

  Next, non-player object drawing processing by the non-player object drawing unit 22 will be described with reference to FIG. The process shown in FIG. 11 is an example, and the non-player object drawing process may be executed by a process different from this.

  In step S1, when the obstacle determination unit 21 determines that the non-player object is an obstacle, the process proceeds to step S2, and the non-player object drawing unit 22 determines whether the transparency is the maximum value. If the transparency is the maximum value, that is, if the transparency process of the non-player object has already been completed, the process returns to step S1, and the determination process by the obstacle determination unit 21 is performed again.

  If the transparency is not the maximum value in step S2, that is, if the non-player object is changed from a non-obstacle to an obstacle, a transparency process is started in step S2. In the transparency process, until the transparency of the non-player object reaches a maximum value (for example, 60%), the process of drawing with the transparency of the non-player object increased stepwise is repeated.

  In step S1, when the obstacle determination unit 21 determines that the non-player object is not an obstacle, the process proceeds to step S4, and the non-player object drawing unit 22 determines whether the transparency is a default value (for example, 0%). judge. When the transparency is the default value, that is, when the non-transparency process of the non-player object has already been completed, the process returns to step S1, and the determination process by the obstacle determination unit 21 is performed again.

  If the transparency is not the default value in step S4, that is, if the non-player object is changed from an obstacle to a non-obstacle, a non-transparency process is started in step S5. In the non-transparency process, the process of drawing with the transparency of the non-player object lowered stepwise is repeated until the transparency of the non-player object reaches the default value.

  According to such a game program 1 according to the embodiment of the present invention, it is possible to easily determine an obstacle of a player object when viewed from a virtual camera in a virtual game space, and to provide an easy-to-view screen for the player. Can do.

(Other embodiments)
As described above, the embodiments of the present invention have been described. However, it should not be understood that the descriptions and drawings constituting a part of this disclosure limit the present invention. From this disclosure, various alternative embodiments, examples, and operational techniques will be apparent to those skilled in the art.

  For example, the transparency may be changed according to the angle formed by the normal line of the abdomen of the player object and the line of sight of the virtual camera. For example, the greater the angle, the greater the non-player object transparency may be controlled.

  It goes without saying that the present invention includes various embodiments not described herein. Therefore, the technical scope of the present invention is defined only by the invention specifying matters according to the scope of claims reasonable from the above description.

DESCRIPTION OF SYMBOLS 1 Game program 3 Game device 10 Control part 11 Operation detection part 12 Virtual space production | generation part 13 Virtual camera control part 14 Player object control part 15 Non-player object control part 20 Drawing part 21 Obstacle determination part 22 Non-player object drawing part 31 CPU
32 RAM
33 ROM
34 Storage 35 Image processing unit 36 Input interface 37 Audio processing unit 38 Communication unit 40 Display device 41 Input device 42 Speaker C Virtual camera H Normal line O Non-player object P Player object V Line of sight

Claims (6)

Computer
Player object control means for generating a player object in a virtual game space and causing the player object to be activated in the game space based on operation information input by the player;
Non-player object control means for generating and arranging a non-player object in the game space;
The game space is converted into image data viewed from a virtual camera provided in the game space and functions as a drawing means for drawing,
The drawing means includes
When the player object is opposed to the non-player object and an angle formed by a normal line of the abdomen of the player object and the line of sight of the virtual camera is larger than a predetermined angle, the non-player object The game program characterized by including the obstacle determination means which determines that is an obstacle. The game program according to claim 1, wherein the non-player object control means activates the non-player object in the game space based on predetermined processing information. The drawing means includes
The game program according to claim 1 or 2, wherein when the obstacle determination unit determines that the non-player object is an obstacle, the transparency of the non-player object is increased. The drawing means includes
Increasing the transparency of the non-player object in stages and repeating the process of drawing the non-player object;
After the transparency of the non-player object reaches a predetermined transparency, the obstacle determination means determines whether the non-player object is an obstacle,
The game program according to claim 3, wherein when the non-player object is an obstacle, the non-player object is rendered by being transparently processed with the predetermined transparency. The game program according to any one of claims 1 to 4, wherein the opposing action is an action in which the player object contacts the non-player object.   A game device comprising: a program storage unit that stores the game program according to claim 1; and a computer that executes the game program stored in the program storage unit.

Images