JPH1071272A - Game apparatus, display device used therefor and readable medium of computer - Google Patents

Abstract

PROBLEM TO BE SOLVED: To indicate in real time on a monitor an image projected on an optical reflective surface by a model responding quickly to the shift of visual point of a character to be set in a game space. SOLUTION: An inversion polygon data memory section 8 stores inversion polygon data previously prepared with respect to a model to be image into a water surface among models atored in a polygon data memory section 7. A picture drawing processor 5 obeying a picture drawing command from CPU 3 performs the picture drawing process to a frame buffer 11 and this picture drawing command consists of data obtained by a graphics data forming section 4.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention displays a three-dimensional image which changes in accordance with the position and moving direction of a character moving on a water surface or the like set in a game space by a throw operation of an operating hand. The present invention relates to a game device, a display method used therefor, and a computer-readable medium.

[0002]

2. Description of the Related Art In recent years, as an application of a driving game apparatus in which a player simulatedly drives a car, a game apparatus in which a character such as a personal watercraft is simulated to move on the water surface has been proposed. I have. In such a game device moving on the water surface, an attempt has been made to increase the sense of reality of the game by displaying a state in which surrounding buildings, characters, and the like are reflected on the water surface. 2. Description of the Related Art Conventionally, the following two techniques are mainly used to display a state in which a building or the like is reflected on the water surface.

(1) When a character or a building of a game is composed of dot images, the dot images are inverted upside down, or an inverted dot image is prepared in advance and superimposed on the water surface. To display.

(2) When a game character or a building is composed of polygons, an accurate image is obtained by a mirror inversion method of sequentially calculating how each polygon appears on the water surface as a reflection surface. .

[0005]

However, according to the conventional technique (1), the dot image is a two-dimensional image, and an image reflected on the water surface from a fixed viewpoint position and direction is pseudo. It is only displayed in.
Therefore, when a character or a building is represented in three dimensions, an accurate image that follows the movement of the viewpoint position due to the movement of the character on the water surface is obtained even if an accurately calculated dot image is prepared in advance. It was difficult to display. In addition, although the conventional technique (2) can provide an accurate image, it requires time for the arithmetic processing. Therefore, it is important to display an image in real time in response to an operation performed by a player quickly. This is an unsuitable technique for video games.

SUMMARY OF THE INVENTION The present invention has been made in view of the above problems, and responds quickly to the movement of the viewpoint of a character. An image of a model set in a game space reflected on a flat surface is displayed on a display means in real time. It is an object to provide a game device for displaying.

[0007]

According to the present invention, the coordinates of the vertices of each polygon constituting a plurality of models set in a three-dimensional game space and the coordinates of a flat surface set in the game space are stored. Model data storage means, a character moving hand for moving a character in the game space in accordance with an operation of the operation means, and a polygon constituting a predetermined model among the plurality of models is converted from the flat surface to a symmetric surface. Inverted polygon data output for obtaining the vertex coordinates of the inverted polygon moved to a plane symmetric position as described above, and the model and the inverted polygon which change according to the viewpoint position and the line of sight of the character are played through display means. Drawing processing means for presenting the image in a state that can be visually recognized by a user (claim 1).

According to this structure, the character moves in accordance with the operation of the operating means, and the model set in the game space which changes in accordance with the viewpoint position and the line-of-sight direction of the character is played through the display hand throw. It is presented in a state that can be visually recognized by a person. At this time, the model is presented according to the character's viewpoint position and gaze direction. For a predetermined model among the plurality of models, vertex coordinates of an inverted polygon obtained by moving the polygon to a plane-symmetric position with a flat surface as a symmetric surface are obtained. Is presented as a model that is reflected on a flat surface according to, the sense of reality of the game is increased.

[0009] In the game apparatus according to the first aspect, the drawing processing hit presents the flat surface as a reflection surface that performs optical reflection.

According to this configuration, for a predetermined model of the plurality of models, the vertex coordinates of the inverted polygon obtained by moving the polygon to a plane-symmetric position with the flat surface as the symmetry plane are obtained, and the viewpoint position of the character is obtained. In addition, by presenting an inverted polygon that changes according to the line of sight, the inverted polygon is displayed as a model reflected on a flat surface according to the viewpoint position and the line of sight of the character, thereby increasing the sense of reality of the game. become. As such a reflection surface, a water surface such as the sea, a lake and a river, an outer wall surface of a building covered with glass, and the like can be considered.

Further, in the game apparatus according to claim 1 or 2, the model has a terrain model for displaying terrain and a structure model other than the terrain model, and the inverted polygon data output means includes: A vertex coordinate of an inverted polygon is obtained for a polygon constituting a predetermined model in the object model (claim 3).

According to this configuration, the terrain model and the structure model are presented in a state that can be visually recognized by the player according to the viewpoint position and the line-of-sight direction of the character. For a given model in the structure model, the vertex coordinates of the inverted polygon obtained by moving the polygon to a plane-symmetric position with the flat surface as the plane of symmetry are obtained, and this inverted polygon is determined by the viewpoint position and the line-of-sight direction of the character. Is presented as a model that is reflected on a flat surface according to, the sense of reality of the game is increased.

Further, in the game apparatus according to any one of claims 1 to 3, the inverted polygon data output means has inverted polygon data storage means in which a previously obtained vertex coordinate of the inverted polygon is stored. (Claim 4).

According to this configuration, the vertex coordinates of an inverted polygon obtained by moving a polygon constituting a predetermined model among a plurality of models to a plane-symmetric position with the above-mentioned flat surface as a symmetric surface are obtained and stored in advance. By doing so, it is possible to reliably display a model reflected on a flat surface in real time without requiring time for calculation.

The game apparatus according to any one of claims 1 to 4, further comprising inverted polygon texture data storage means for storing texture data to be mapped to said inverted polygon, wherein said drawing processing means comprises: In a state where the texture data is mapped to the polygon, the texture data is presented to the player via the display means so as to be visually recognizable.

According to this configuration, as the texture data of each polygon of the model reflected on the flat surface, for example, when the reflection surface is a water surface, data in which a ripple is superimposed on the texture data of the original model of the inverted model, This data is further stored with data whose color is corrected in accordance with the color of the water surface and data set so that the color becomes closer to the color of the water surface as the distance from the water surface increases, thereby further increasing the realism of the game. I do.

Model data storage means for storing vertex coordinates of polygons constituting a plurality of models set in a three-dimensional game space and coordinates of a water surface set in the game space; The character moving means for moving the character in the game space in accordance with the operation of the character, and the model changing in accordance with the viewpoint position and the line-of-sight direction of the character are presented to the player via the display means in a visible state. The drawing model, and the model comprises an underwater model located below the surface of the water, and the vertex coordinates of each polygon constituting the underwater model are determined when the underwater model passes through the surface of the water. Are set so that they are visually refracted in a pseudo manner (claim 6).

According to this configuration, the character moves in accordance with the operation of the operation means, and the model set in the game space which changes according to the viewpoint position and the line-of-sight direction of the character is displayed by the player via the display means. The underwater model set below the surface of the water is presented according to the viewpoint position and the line of sight of the character. The vertex coordinates of each polygon that makes up the underwater model are
Since the underwater model is set to be artificially refracted in the water, the model is presented to the player as if it were actually seen through the water surface, and the sense of reality of the game is increased.

The method for displaying a model in a game device for moving a character in response to an operation of an operating means in a three-dimensional game space in which a plurality of models are set, wherein the plurality of models are represented by polygons A flat surface is set in the game space, and a vertex coordinate of an inverted polygon obtained by moving a polygon constituting a predetermined model of the plurality of models to a plane-symmetric position with the flat surface as a plane of symmetry. Then, the model and the inverted polygon, which change according to the viewpoint position and the line-of-sight direction of the character, are presented in a visible state to a player via display means (claim 7).

According to this method, the character moves in accordance with the operation of the operating means, and the model set in the game space, which changes in accordance with the viewpoint position and the line of sight of the character, is played through the display hand throw. It is presented in a state that can be visually recognized by a person. At this time, the model is presented according to the character's viewpoint position and gaze direction. In addition, for a predetermined model among a plurality of models, vertex coordinates of an inverted polygon obtained by moving the polygon to a plane symmetric position with a flat surface as a symmetric surface are obtained, and the coordinates are changed according to the viewpoint position and the line of sight of the character. When the inverted polygon is presented, the inverted polygon is displayed as a model reflected on a flat surface according to the viewpoint position and the line-of-sight direction of the character, thereby increasing the sense of reality of the game.

A program used in a game apparatus for moving a character in accordance with an operation of an operation means in a three-dimensional game space in which a plurality of models composed of polygons and a flat surface is set. Calculating a vertex coordinate of an inverted polygon obtained by moving a polygon constituting a predetermined model among the plurality of models to a plane-symmetric position with the flat surface as a plane of symmetry; and a viewpoint position of the character. And a step of presenting the model and the inverted polygon, which change according to the direction of the line of sight, to the player via the display means so as to be visible to the player (claim 8).

According to this computer-readable medium, when read into the computer, a polygon constituting a predetermined model among the plurality of models is moved to a plane-symmetric position with a flat surface as a plane of symmetry. The vertex coordinates are obtained, and the model and the inverted polygon that change according to the viewpoint position and the line-of-sight direction of the character are presented in a state that can be visually recognized by the player via the display means. It is displayed as a model reflected on a flat surface according to the line of sight, thereby increasing the sense of reality of the game.

[0023]

FIG. 1 is a block diagram showing a control configuration of an embodiment of a game device according to the present invention.

This game device has an operation unit 1, a monitor 2,
A CPU 3, a graphics data generator 4, and a drawing processor 5 are provided, and as storage units, a game program storage unit 6, polygon data storage unit 7, inverted polygon data storage unit 8, texture data storage unit 9, RA
M10 and a frame buffer 11 are provided.

Each of the storage units 6 to 9 comprises a ROM or the like, and a RAM 10 temporarily stores data. The frame buffer 11 stores data to be displayed on the screen of the monitor 2.

The operating section 1 includes an operating member having a steering wheel function, an operating member having an accelerator pedal function, and the like, and is operated by a player while watching an image displayed on a monitor 2 such as a CRT. The signal is sent to the CPU 3.

The CPU 3 controls the operation of a game device in which a character such as a personal watercraft moves on the surface of the water by a player's operation in accordance with a game program stored in the game program storage unit 6. ),
It has the function of (2).

(1) Viewpoint calculation function Using the operation signal from the operation unit 1, the amount of movement and the amount of rotation of the character, that is, the viewpoint position and line-of-sight direction are calculated and stored in the RAM 10. For example, the line of sight swings right and left according to the direction and amount of turning the steering wheel, and the viewpoint position also moves left and right, while the speed of the character increases as the amount of depression of the accelerator pedal increases. .

(2) Data input / output control function with each unit The data of the calculated movement amount and rotation amount of the character is sent to the graphics data generation unit 4 and the calculation result of the graphics data generation unit 4 is drawn by the drawing processor 5.
To send to.

The polygon data storage unit 7 stores the three-dimensional coordinates of each vertex of a polygon constituting a model as an individual object displayed on the screen.

The inverted polygon data storage unit 8 includes a model, such as a building, a bridge, or a tunnel, in which the reflection on the water surface is to be considered among the models stored in the polygon data storage unit 7. Inverted polygon data created in advance up to a polygon at a predetermined height position to be inserted is stored. The inverted polygon data includes (−z) obtained by inverting the height position z of the vertices of each polygon from a predetermined water surface H (x, y, 0) with respect to the water surface H (x, y, 0). Things.

The texture data storage unit 10 stores texture data which is two-dimensional image data to be pasted on each polygon. The texture data to be pasted on the above-mentioned inverted polygon includes the brightness of the model reflected on the water surface and the brightness of the model. It is determined according to the distance from the inverted polygon data to the water surface depending on the water quality such as whether the water surface is a sea or a river.

The graphics data generation unit 4 performs geometry processing such as coordinate conversion and light source calculation. The graphics data generation unit 4 receives coordinate data of each vertex of a polygon in the polygon data storage unit 7 and the inverted polygon data storage unit 8 and inputs the data from the CPU 3. By performing coordinate conversion using the movement amount and rotation amount data, new polygon vertex coordinate data is obtained. Further, a light source calculation is performed to calculate the brightness of each vertex of the polygon according to the distance to the virtually set light source from the newly obtained polygon vertex coordinate data after the coordinate conversion.

The graphics data generating section 4 obtains address data in the texture data storage section 10 of the texture data to be attached to each polygon, using the polygon vertex coordinate data after the coordinate conversion.

Then, the graphics data generator 4 sends the obtained data to the CPU 3 again, and the CPU 3 stores the received data in the RAM 10.

The drawing processor 5 performs a drawing process on the frame buffer 11 in accordance with a drawing command from the CPU 3.

This drawing command is composed of (1) two-dimensional coordinate data of the new polygon vertex coordinate data after coordinate conversion obtained by the graphics data generation unit 4. Polygon vertex address data indicating the data. (2) Address data indicating the storage position of the texture data to be attached to the polygon in the texture data storage unit 10. (3) Polygon brightness data.

Then, the drawing processor 5 performs texture mapping to paste a texture on the polygon, that is, write texture data corresponding to the range of polygon vertex address data in the frame buffer 11.

The game apparatus of the present embodiment can take various forms such as a so-called arcade game apparatus, a home game machine, and a general personal computer.

In the case of an arcade game machine, the operation unit 1 has a dedicated handle, an accelerator pedal, and the like, and the monitor 2 also includes a dedicated CRT and the like.

In the case of a home game machine, the operation unit 1 described above is used.
Are usually called controllers, cross keys,
It has operation buttons and the like. The CPU 3, the graphics data generation unit 4, and the storage units 7 to 9 are all provided in the home game machine. As the monitor 2, a TV monitor is frequently used.

In the case of a personal computer, the operation unit 1 may be replaced by an input device such as a keyboard and a mouse, and a graphic display is used as the monitor 2. Further, the CPU 3 and the graphics data generation unit 4
The storage units 7 to 9 are all provided in a personal computer.

In addition, in the case of a home-use game machine or a personal computer, the game program stored in the game program storage section 6 is initially stored on a floppy disk, CD-ROM, or the like.
It is recorded on a computer-readable recording medium such as a ROM, a magneto-optical disk, and a DVD-ROM, and the recording medium is read by a reader provided in a home-use game machine or the like so as to be introduced into the main body. Is also good.

FIG. 2 is a flowchart showing the procedure of the display operation of this embodiment, and FIG. 3 is an explanatory diagram showing an example of an image reflected on the water surface.

First, when the operation unit 1 is operated and an operation signal is transmitted, the operation data is fetched (step S).
100) When the character such as the personal watercraft moves by this operation, that is, when the viewpoint position and the line-of-sight direction move, the CPU 3 calculates the movement amount and rotation amount data of each polygon from the operation data (step S).
110).

Next, the calculated movement amount data and rotation amount data are sent from the CPU 3 to the graphics data generation unit 4, and the graphics data generation unit 4 calculates the movement amount data and the rotation amount data and the three vertices of the polygon. Geometry processing such as coordinate conversion and light source calculation is performed using the dimensional coordinate data (step S120).

Subsequently, the obtained data is sent from the graphics data generator 4 to the drawing processor 5 via the CPU 3, and the drawing processor 5 writes background image data to be displayed into the frame buffer 11. (Step S130) Next, the polygon model to be displayed and the inverted polygon model are written at predetermined height positions z and (-z), respectively (step S14).
0), texture mapping is performed (step S
150).

Next, a polygon model of a wave having a light white texture is written (step S160).
Finally, a character such as a personal watercraft is written (step S170).

According to the above procedure, as shown in FIG. 3, the state where the lower surface of the bridge provided on the river is reflected on the river is monitored by the monitor 2.
, And the sense of reality and realism of the game can be increased.

FIG. 3 shows, for example, an image viewed from a personal watercraft running on the surface of a river 21. Images 23a and 23a are obtained by reversing a side surface 23 and a lower surface 24 of a bridge 22 over a river. A state 24a is reflected on the water surface of the river 21.

As described above, since the inverted polygon model is stored in advance, the lower surface of the model that is difficult to express in a dot image, that is, FIG. The lower surface of the bridge shown can be represented as if it were actually reflected on the water surface, and the realism of the game can be further increased.

The water surface may be provided as a polygon model and translucent texture data to be attached to the polygon may be provided.

Also, without storing the inverted polygon model,
An operation unit that performs the operation of (−z) when display is necessary may be provided. Even in this case, higher-speed processing can be performed than the calculation of mirror inversion.

Further, without having the water surface or the wave as a polygon model, the texture data storage unit 10 stores, as the texture data of the inverted polygon model, dark blue, texture data in which a pattern is superimposed and a pseudo ripple is formed, and Texture data that has been color corrected according to the color of the water surface,
In the model, texture data or the like may be stored such that polygons having a greater distance from the water surface gradually blend into the color of the water surface. As a result, it is possible to easily obtain an image having a distortion as if reflected on a wavy water surface, and to make it appear that the inverted polygon model is reflected on the water surface.

The writing of the background data, the polygon model, the inverted polygon model, the polygon model representing the wave, and the character is performed in steps S130 to S1 in FIG.
The order is not limited to the order shown in FIG.

The present invention is not limited to the water surface, and can be applied to, for example, an image reflected on a wall surface of a building covered with a window glass.

The polygon data storage unit 7 further stores
It stores polygon data of a model set in advance under the surface of water such as a river or a lake, and vertex coordinates of each polygon constituting a portion of the model on the surface of water,
It stores a model formed by compressing the vertex coordinates of each polygon constituting the underwater part at a predetermined ratio,
The texture data storage section 10 may further store dark blue texture data as texture data for polygon data constituting a portion below the water surface. In this case, it is possible to express the model as if the underwater model is seen through the surface of the water, whereby the realism of the game can be further increased.

[0058]

As described above, according to the present invention,
Since the polygon constituting a predetermined model among the plurality of models is moved to a plane-symmetric position with the flat surface as a symmetric surface, the vertex coordinates of the inverted polygon are obtained, and the model reflected on the flat surface is displayed. Realism and realism of the game can be increased.

Also, by previously obtaining and storing the coordinates of the vertices of the inverted polygons with respect to the polygons constituting the predetermined model among the plurality of models, it is possible to reliably perform real-time calculations on a flat surface without requiring time. The model to be reflected can be displayed.

Further, by storing the texture data of each polygon of the model reflected on the flat surface, the realism of the game can be further increased with a simple configuration without requiring time for the calculation.

Also, by setting the vertex coordinates of the underwater polygon stored in the polygon data storage means so that the underwater model looks pseudo-refracted in water, the underwater model can be seen as if it were passing through the water surface. The game can be displayed so as to be seen through, and the sense of reality and the realism of the game can be increased with a simple configuration.

[Brief description of the drawings]

FIG. 1 is a block diagram showing a control configuration of an embodiment of a game device according to the present invention.

FIG. 2 is a flowchart illustrating a procedure of a display operation according to the embodiment.

FIG. 3 is an explanatory diagram showing an example of an image reflected on the water surface.

[Explanation of symbols]

 Reference Signs List 1 operation unit 2 monitor 3 CPU 4 graphics data generation unit 5 drawing processor 6 game program storage unit 7 polygon data storage unit 8 inverted polygon data storage unit 9 RAM 10 texture data storage unit 11 frame buffer

Claims (8)

[Claims] 1. A model data storage means for storing vertex coordinates of respective polygons constituting a plurality of models set in a three-dimensional game space and coordinates of a flat surface set in the game space, A character moving hand for moving a character in the game space in accordance with the operation of the means, and a polygon constituting a predetermined model among the plurality of models is moved to a plane-symmetric position using the flat surface as a plane of symmetry. Inverted polygon data output for calculating the vertex coordinates of the inverted polygon, and the model and the inverted polygon that change according to the viewpoint position and the line-of-sight direction of the character are presented in a state that can be visually recognized by a player via display means. A game apparatus comprising: 2. The game device according to claim 1, wherein the drawing process hit presents the flat surface as a reflection surface that performs optical reflection. 3. The game device according to claim 1, wherein the model has a terrain model for displaying terrain and a structure model other than the terrain model, and the inverted polygon data output means includes: A game device for obtaining vertex coordinates of inverted polygons for polygons constituting a predetermined model in an object model. 4. The game apparatus according to claim 1, wherein said inverted polygon data output means has inverted polygon data storage means in which a previously obtained vertex coordinate of said inverted polygon is stored. A game device, characterized in that: 5. The game apparatus according to claim 1, further comprising: inverted polygon texture data storage means for storing texture data to be mapped to said inverted polygon, wherein said drawing processing means comprises: A game device characterized in that the texture data is mapped to a polygon and presented to a player via the display means so as to be visually recognizable. 6. Model data storage means for storing vertex coordinates of polygons constituting a plurality of models set in a three-dimensional game space and coordinates of a water surface set in the game space, and operation means. Character moving means for moving the character in the game space in accordance with the operation of
A drawing processing method for presenting the model, which changes in accordance with the viewpoint position and the line of sight of the character, to a player via a display means in a visible state, wherein the model is a water surface positioned below the water surface. A lower model, wherein the coordinates of the vertices of each of the polygons constituting the underwater model are set such that the underwater model is visually refracted and refracted when passing through the water surface. Game device. 7. A method for displaying a model in a game device in which a character is moved in accordance with an operation of an operation means in a three-dimensional game space in which a plurality of models are set, wherein the plurality of models are represented by polygons. A flat surface is set in the game space, and a vertex coordinate of an inverted polygon obtained by moving a polygon constituting a predetermined model of the plurality of models to a plane-symmetric position with the flat surface as a plane of symmetry. A display method for use in a game device, wherein the model and the inverted polygon, which are determined and changed in accordance with the viewpoint position and the line-of-sight direction of the character, are presented to a player via a display means in a visible state. 8. A program used in a game device for moving a character in accordance with an operation of an operation means in a three-dimensional game space in which a plurality of polygonal models and a flat surface are set, the program being read by a computer. Obtaining a vertex coordinate of an inverted polygon obtained by moving a polygon constituting a predetermined model of the plurality of models to a plane-symmetric position with the flat surface as a symmetric surface,
Presenting the model and the inverted polygon, which change in accordance with the viewpoint position and the line-of-sight direction of the character, to the player via display means so as to be visually recognizable by a player. .