JP2006236075A - Video game machine - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a video game machine avoiding complicated processing such as view line crossing decision to reduce a processing amount. <P>SOLUTION: This video game machine 10 is a 3DCG game machine having: an IO 20 inputted with operation information of a gamer; a CPU 50 moving a vehicle (a mobile body) inside a virtual three-dimensional space disposed with a plurality of polygons on the basis of the operation information, making a camera (a virtual viewpoint) follow the vehicle, and outputting a video of the vehicle viewed from the camera as video information; and a display device 70 displaying the video on the basis of the video information. The video game machine 10 also has: a road surface information data list 43 previously storing position information (viewpoint height information or the like) of the camera in each the polygon; a hit decision part 51 deciding a polygon through which the vehicle passes; and viewpoint adjustment part 54 or the like changing a position of the camera on the basis of the position information of the road surface information data list 43, and a decision result of the hit decision part 51. <P>COPYRIGHT: (C)2006,JPO&NCIPI

Description

  The present invention relates to a video game machine in which a moving body moves and a game progresses in a virtual three-dimensional space in which a plurality of polygons are arranged.

Conventionally, this type of video game machine has, for example, a car racing game. In this car racing game, a player is positioned at a high position behind the car so that the player can easily grasp the relationship between the course and the car. A virtual viewpoint may be set (bird's-eye viewpoint).
This bird's-eye viewpoint has a higher virtual viewpoint position than the normal third-person viewpoint (rear viewpoint), so if there are tunnels, trees, signs, etc., the virtual viewpoint will sink into it, or obstacles to them Sometimes obstructed the car.
Therefore, when there is an obstacle in front of the virtual viewpoint, it is necessary to lower the position of the virtual viewpoint. However, the gaze intersection determination performed at that time has a drawback that the amount of calculation increases (for example, Patent Document 1). ).

FIG. 8 is a block diagram showing a conventional video game machine, and FIG. 9 is a diagram showing a progress image of the video game.
A conventional video game machine 10A includes a CPU 50 having a hit determination unit 51, a vehicle behavior control unit 52, a lighting control unit 53, a viewpoint adjustment unit 54, and a line-of-sight intersection determination unit 55, display polygon data 41, and hit determination data 42. , A memory 40 having a road surface information data list 43 and line-of-sight intersection determination data 44, a drawing device 60, and the like. Is displayed and the game proceeds.

When the game is progressing from the above-described bird's-eye view, the camera C serving as the virtual viewpoint may enter the tunnel T as shown in FIG.
Therefore, as shown in FIG. 9B, a process for lowering the camera C is required, but this process is very complicated.

  This is because the line-of-sight intersection determination data 44 (see FIG. 8) of the memory 40 must store the polygons of the line-of-sight intersection determination tunnel T in advance, and the line-of-sight intersection determination unit 55 of the CPU 50 This is because it is necessary to always determine whether or not the polygon of the tunnel T and the line of sight of the camera C intersect.

Further, when the line-of-sight intersection determination unit 55 determines that the lines of sight intersect, the determination result is transmitted to the viewpoint adjustment unit 54, and the viewpoint adjustment unit 54 moves the camera C to which direction and to which position. Since it was necessary to perform a good operation, the processing was further complicated.
JP 2003-135844 A

  An object of the present invention is to provide a video game machine capable of avoiding complicated processing such as line-of-sight intersection determination and reducing the processing amount.

The present invention solves the above problems by the following means. In addition, in order to make an understanding easy, although the code | symbol corresponding to the Example of this invention is attached | subjected and demonstrated, it is not limited to this.
According to the first aspect of the present invention, the moving body (100) is moved based on the operation information in the virtual three-dimensional space in which the operation information of the player is input and the plurality of polygons are arranged. The moving body (100) is tracked at the virtual viewpoint (C), and the video of the moving body (100) viewed from the virtual viewpoint (C) is output as video information, and the video A video game machine including a display unit (70) for displaying video based on information, the storage unit (40) storing in advance the position information of the virtual viewpoint (C) in each polygon; Based on the determination unit (51) that determines which polygon the moving body (100) passes, the positional information of the storage unit (40), and the determination result of the determination unit (51), Change the position of the virtual viewpoint (C) Point position changing part (54) is a video game machine comprising a.
According to a second aspect of the present invention, in the video game machine according to the first aspect, the position information is height information that determines a height of the virtual viewpoint (C). .
According to a third aspect of the present invention, in the video game machine according to the first or second aspect, the position information is information that determines a position in a lateral direction substantially orthogonal to a traveling direction of the moving body (100). This is a video game machine characterized by.
According to a fourth aspect of the present invention, in the video game machine according to any one of the first to third aspects, the viewpoint position changing unit (54) changes the position of the virtual viewpoint (C). A video game machine characterized by changing a distance between the moving body (100) and the virtual viewpoint (C).
According to a fifth aspect of the present invention, in the video game machine according to any one of the first to fourth aspects, the viewpoint position changing unit (54) changes the position of the virtual viewpoint (C). The video game machine is characterized by changing the line-of-sight direction of the virtual viewpoint (C).
According to a sixth aspect of the present invention, in the video game machine according to any one of the first to fifth aspects, the viewpoint position changing unit (54) changes the position of the virtual viewpoint (C). A video game machine characterized by changing the angle of view.
According to a seventh aspect of the present invention, in the video game machine according to any one of the first to sixth aspects, the viewpoint position changing unit (54) moves the virtual viewpoint (C) to the position. The video game machine is characterized by changing.

According to the present invention, since the position information of the virtual viewpoint is stored in advance and the position of the virtual viewpoint is changed based on the position information, it is not necessary to perform the line-of-sight intersection determination between the virtual viewpoint and the obstacle. The amount is reduced.
Further, when the motion information of the moving body is stored in advance in each polygon, the processing amount can be easily reduced by storing the position information of the virtual viewpoint together with the motion information.

  The object of the present invention is to provide a video game machine capable of avoiding complicated processing such as line-of-sight intersection determination and reducing the amount of processing, by preliminarily storing camera position information as a virtual viewpoint together with road surface information. This is realized by moving the camera in response to the movement of the car.

Hereinafter, embodiments of the present invention will be described in more detail with reference to the drawings.
FIG. 1 is a diagram showing an embodiment of a video game machine according to the present invention. FIG. 1A is a block diagram showing a schematic configuration of hardware of the video game machine, and FIG. It is a block diagram which shows each function part of a video game machine, and the flow of a process.
A video game machine 10 according to the present embodiment is a 3DCG (three-dimensional computer graphics) game machine taking a car racing game as an example, and as shown in FIG. 1A, an IO (input unit) 20; A storage 30, a memory (storage unit) 40, a CPU (control unit) 50, a drawing device 60, a display device (display unit) 70, and the like are provided.

  The IO 20 is a part to which the player's operation information is input, and is connected to a handle or the like that is actually operated by the player.

  The storage 30 is a part that stores game contents and processing programs, and is, for example, an HDD or a CD.

The memory 40 stores polygon data, hit data, and the like. As shown in FIG. 1B, the display polygon data 41 for displaying courses, maps, and cars, and course hits and road surfaces are displayed. The information includes hit determination data 42 for information and a road surface information data list 43 for road surface state information, illumination information, and viewpoint height information.
In the viewpoint height information of the road surface information data list 43, position information of the camera (virtual viewpoint) in each polygon is stored in advance, and the position information is information that determines the height of the camera.

  The CPU 50 is a part that controls the content of the video game machine 10 and the game, and moves a vehicle (moving body) based on operation information from the IO 20 in a virtual three-dimensional space in which a plurality of polygons are arranged. The vehicle is tracked by the camera, and the video of the car viewed from the camera is output as video information. The hit determination unit (determination unit) 51, the vehicle behavior control unit 52, the illumination control unit 53, A viewpoint adjusting unit (viewpoint position changing unit) 54.

  The hit determination unit 51 is a part that determines which polygon the vehicle passes through based on information from the display polygon data 41 and the hit determination data 42, and uses the determination result as a road surface information index. The road surface information data list 43 and the vehicle behavior control unit 52 are transmitted.

  The vehicle behavior control unit 52 is a part that outputs vehicle posture information such as the direction and inclination of the vehicle based on the road surface state information from the road surface information data list 43 and the determination result from the hit determination unit 51.

  The illumination control unit 53 is a part that outputs vehicle illumination information for determining the presence or absence of vehicle lighting based on the illumination information from the road surface information data list 43.

The viewpoint adjustment unit 54 is a part that outputs viewpoint information for changing the height of the camera based on the viewpoint height information from the road surface information data list 43.
Note that the vehicle posture information and the vehicle lighting information are used for drawing a car, and the viewpoint information is used for drawing the entire video.

  The drawing device 60 is a part that draws polygons and the like, and based on the display polygon data 41 in the memory 40 and each information (car posture information, car lighting information, viewpoint information) generated by the CPU 50, a game And the video information is transmitted to the display device 70.

  The display device 70 is a part that displays the video of the game based on the video information from the drawing device 60, and is, for example, a display.

Next, a procedure for creating a virtual three-dimensional space used in a car racing game will be described.
2 to 6 are diagrams schematically showing each polygon.
First, as shown in FIG. 2, a map polygon for display is prepared.
Next, as shown in FIG. 3, a course hit line L is produced. In this embodiment, there are three lines at the center and both ends of the course, but the number of lines may be increased or decreased depending on the situation.
Further, as shown in FIG. 4, the course is divided into a lattice shape to create polygons for road surface information.

Then, as shown in FIG. 5, polygons such as dirt D, grassland G, tunnel T, and shaded portion S are produced.
Finally, when the polygons described above are displayed together, the result is as shown in FIG. 6, and the hit determination can be performed by reading the information of the polygons that collide with the line extending vertically from the vehicle position to the road surface direction. Information on the road surface (type of road surface, height of road surface, etc.) and the position of the car on the course (whether it is within the course, the position from the start point, etc.) are known. A display polygon may be used for hit determination.

Next, the operation of the video game machine 10 according to the present embodiment will be described with reference to FIGS. 1 and 7.
FIG. 7 is a diagram showing a progress image of the video game.
When the game is started and the player operates the IO 20 (see FIG. 1), the CPU 50 causes the vehicle to travel according to the operation information.
Then, as shown in FIG. 7A, the vehicle 100 approaches the tunnel T.
Here, as position information of the camera C, a normal height is set on the road surface of A, and a low height is set on the road surface of B.

When the car 100 enters the tunnel T, as shown in FIG. 7B, the viewpoint adjustment unit 54 of the CPU 50 moves the position of the camera C downward based on the position information set on the road surface of B. change.
At this time, if the position of the camera C is suddenly changed, the player feels as if the video has been switched, so the camera C may be moved gradually to change the position.

  Further, if the camera C is simply lowered, the camera C may be too close to the car 100 and may not be visible. Therefore, as shown in FIG. The distance of the camera C is changed (separated) to change the horizontal position of the camera C, the direction of the camera C is changed (toward the car), the line of sight is changed, and zooming (zooming to the wide side) is performed. In this way, the angle of view may be changed.

Thus, according to the present embodiment, the following effects are obtained.
(1) Since the position information of the camera C is stored in advance and the position of the camera C is changed based on the position information, it is not necessary to perform a line-of-sight intersection determination between the camera C and the tunnel T. The process for preventing the dive is simplified, and the processing amount can be reduced.

(2) Since a normal 3DCG game machine adjusts and determines the behavior of a moving object, information on each place is often included in ground hit information. In particular, in racing games, information that affects the behavior of a car such as paved roads, gravel roads, and snow, and lighting information such as sun and shade are often set as road surface information. Therefore, by storing the position information of the camera C together with these pieces of information as in the present embodiment, the processing amount can be easily reduced, and no significant change in the control program is required. .

(3) Since the position information of the camera C is stored corresponding to the polygons on the course, it is effective for a car racing game that moves on a predetermined course.

(Modification)
The present invention is not limited to the embodiments described above, and various modifications and changes are possible, and these are also within the equivalent scope of the present invention.
(1) The type of game is not limited to a car racing game, and may be, for example, a battle game between robots, a horse racing game, a ski game, a train game, or the like.
(2) In the present embodiment, the example of the game in which the car is viewed from the bird's-eye viewpoint from the beginning has been described.

(3) The conventional line-of-sight intersection determination and the viewpoint adjustment of this embodiment may be used in combination. For example, in a battle game, a simple polygon is placed in a place where the virtual viewpoint is likely to sink, and the viewpoint adjustment as in this embodiment is performed, and the conventional gaze intersection determination is used in other places. To do. In this way, processing efficiency can be improved.

(4) Although the position information has been described as an example of information for determining the height of the camera C, the position information may be information for determining a position in the lateral direction substantially orthogonal to the traveling direction of the car 100. For example, when the tunnel is curved, the camera C may be touched together with the car 100. However, in the tunnel, the horizontal position of the camera C is set to be fixed on the center line. In this case, the camera C can be prevented from entering the side wall of the tunnel.
(5) Although the obstacle has been described as an example of a tunnel, it may be a grove or a sign, for example.

It is a figure which shows the Example of the video game machine by this invention. It is a figure which shows each polygon typically. It is a figure which shows each polygon typically. It is a figure which shows each polygon typically. It is a figure which shows each polygon typically. It is a figure which shows each polygon typically. It is a figure which shows the progress image of a video game. It is a block diagram which shows the conventional video game machine. It is a figure which shows the progress image of a video game.

Explanation of symbols

10, 10A video game machine 20 IO (input unit)
30 storage 40 memory (storage unit)
41 Display Polygon Data 42 Hit Determination Data 43 Road Surface Information Data List 44 Gaze Intersection Determination Data 50 CPU (Control Unit)
51 Hit determination unit (determination unit)
52 Car Behavior Control Unit 53 Lighting Control Unit 54 Viewpoint Adjustment Unit (Viewpoint Position Change Unit)
55 Gaze intersection determination unit 60 Drawing device 70 Display device (display unit)
100 cars (mobile)
C Camera (virtual viewpoint)
D Dirt G Grassland S Shady part T Tunnel

Claims (7)

An input unit for inputting player operation information;
In a virtual three-dimensional space in which a plurality of polygons are arranged, a moving body is moved based on the operation information, the moving body is tracked with a virtual viewpoint, and video of the moving body viewed from the virtual viewpoint is displayed as video information. A control unit that outputs as
A video game machine comprising a display unit for displaying video based on the video information,
A storage unit that stores in advance the position information of the virtual viewpoint in each polygon;
A determination unit for determining which polygon the moving body passes through;
A viewpoint position changing unit that changes the position of the virtual viewpoint based on the position information of the storage unit and the determination result of the determination unit;
A video game machine equipped with. The video game machine according to claim 1,
The position information is height information that determines a height of the virtual viewpoint;
A video game machine characterized by The video game machine according to claim 1 or 2,
The position information is information for determining a position in a lateral direction substantially orthogonal to the traveling direction of the moving body;
A video game machine characterized by The video game machine according to any one of claims 1 to 3,
The viewpoint position changing unit changes the position of the virtual viewpoint and changes the distance between the moving body and the virtual viewpoint.
A video game machine characterized by The video game machine according to any one of claims 1 to 4,
The viewpoint position changing unit changes the position of the virtual viewpoint and changes the line-of-sight direction of the virtual viewpoint;
A video game machine characterized by The video game machine according to any one of claims 1 to 5,
The viewpoint position changing unit changes the position of the virtual viewpoint and changes the angle of view.
A video game machine characterized by The video game machine according to any one of claims 1 to 6,
The viewpoint position changing unit moves the virtual viewpoint to change its position;
A video game machine characterized by

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