JP2006087944A - Game machine - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To prevent soccer lines drawn on the ground in a 3D soccer game from becoming invisible depending on camera angles. <P>SOLUTION: The game machine comprises polygons arranged on a reference plane serving as a reference in a virtual space, a discriminating means for discriminating the positional relationship between the polygons and a virtual camera, and a polygon inclining means for inclining the polygons to increase the areas of the polygons viewed by the virtual camera in accordance with the discriminated results so as to make the lines arranged on the ground viewable better by the camera by turning the polygons of the lines toward the camera. <P>COPYRIGHT: (C)2006,JPO&NCIPI

Description

  The present invention relates to a game device, and more particularly to improvement of game screen display in the game device.

  In a so-called video game apparatus, while watching the screen, the input device is operated to control the movement of the object and advance the game. In a 3D (three-dimensional) display game device, a virtual space is formed in a computer system, and game objects are arranged in this space. Then, the computer controls the movement of the object according to the game rules. Further, in accordance with the player's operation, the main character is controlled to develop the game. The development of this game is displayed on the monitor screen through a virtual camera arranged in the virtual space.

  However, when a game developed in a 3D game space is displayed on the screen, the ease of playing the game differs depending on the viewing direction in which the camera views the object. In addition, the cheapness of the game varies depending on the position of the camera. It is also desirable that the three-dimensional expression of the object is emphasized according to the game area.

  In addition, when a game that appears in a virtual 3D space is to be displayed on the screen, it is desirable that the game field be displayed on the screen as wide as possible while keeping the viewpoint position away so that the player can easily play the game. . When such processing is performed, the width of the line indicating the court of the sports game is narrower than the entire virtual space, and thus may disappear due to the resolution of the screen. On the other hand, in order to prevent this disappearance, when a thick line is prepared in advance, a specially thick line is displayed when zooming up (making the viewpoint close to the gazing point) to increase the power of the game. Is unnatural.

  Therefore, an object of the present invention is to provide a game screen that is easy for a player to see.

  Another object of the present invention is to provide a game device that gives a player a more favorable view in the area of the game field.

  In order to achieve the above object, the game device of the present invention arranges an object in a virtual space formed in a computer system, and develops the game while controlling the movement of the object according to a rule defined as an input operation. In the game device that displays the state in the virtual space as a screen viewed from a virtual camera, based on the determination result, a determination unit that determines whether the object exists in a specific area in the virtual space, and Camera angle adjusting means for adjusting the angle of the virtual camera.

  Preferably, the camera angle adjusting means adjusts the angle of the virtual camera based on the determination result and the moving direction of the object.

  Preferably, the camera angle adjustment means adjusts the angle of the virtual camera in at least one of a horizontal direction and a vertical direction in the virtual space.

  The game device of the present invention arranges an object in a virtual space formed in the computer system, develops a game while controlling the movement of the object according to a rule determined as an input operation, In a game device that displays a state as viewed from a virtual camera, a determination unit that determines whether or not the object exists in a specific area in the virtual space, and a visual field of the virtual camera based on the determination result Zoom adjusting means for adjusting the range.

  In addition, the game device of the present invention includes an image generation / display unit that generates a two-dimensional image obtained by viewing a virtual space composed of a three-dimensional shape model composed of a plurality of polygons from an arbitrary viewpoint, and displays the generated image on a display device. In the game device, an angle calculating unit that calculates an angle formed by a line segment connecting the viewpoint and the gazing point and a normal line of a predetermined polygon arranged in the virtual space, and the angle calculating unit calculates Polygon tilting means for changing the coordinate values of the vertexes of the polygon so that the angle becomes a predetermined value.

  As described above, according to the game device of the present invention, in the 3D game, the polygon that is difficult to see depending on the camera position is raised, so that, for example, the line drawn on the ground does not disappear. Good. Further, according to the game device of the present invention, it is possible to obtain a game device in which the direction of the camera and the field of view range are adjusted according to the game area and the moving direction of the object, and a screen on which a player can easily play a game is obtained. It is done.

  FIG. 1 is an external view of a video game machine using an image processing apparatus according to an embodiment of the present invention. In this figure, the video game machine main body 1 has a substantially box shape, and a game processing board or the like is provided therein. Further, two connectors 2a are provided on the front surface of the video game machine main body 1, and a PAD 2b for game operation is connected to these connectors 2a via a cable 2c. When two players enjoy the game, two PADs 2b are used.

  A cartridge I / F 1 a for connecting a ROM cartridge and a CD-ROM drive 1 b for reading a CD-ROM are provided on the upper part of the video game machine main body 1. Although not shown, a video output terminal and an audio output terminal are provided on the back of the video game machine main body 1. The video output terminal is connected to the video input terminal of the TV receiver 5 via the cable 4a, and the audio output terminal is connected to the audio input terminal of the TV receiver 5 via the cable 4b. In such a video game machine, the user can play the game while viewing the screen displayed on the TV receiver 5 by operating the PAD 2b.

  FIG. 2 is a block diagram showing an outline of the TV game machine according to the present embodiment. The image processing apparatus includes a CPU block 10 for controlling the entire apparatus, a video block 11 for controlling display of a game screen, a sound block 12 for generating sound effects, a subsystem 13 for reading a CD-ROM, and the like. Has been.

  The CPU block 10 includes an SCU (System Control Unit) 100, a main CPU 101, a RAM 102, a ROM 103, a cartridge I / F 1a, a sub CPU 104, a CPU bus 103, and the like. The main CPU 101 controls the entire apparatus. The main CPU 101 has an arithmetic function similar to that of a DSP (Digital Signal Processor) inside, and can execute application software at high speed. The RAM 102 is used as a work area for the main CPU 101. In the ROM 103, an initial program for initialization processing and the like are written. The SCU 100 smoothly performs data input / output between the main CPU 101, the VDP 120, 130, the DSP 140, the CPU 141, and the like by controlling the buses 105, 106, and 107. Further, the SCU 100 includes a DMA controller therein, and can transfer sprite data during the game to the VRAM in the video block 11. Thereby, application software such as a game can be executed at high speed. The cartridge I / F 1a is for inputting application software supplied in the form of a ROM cartridge.

  The sub CPU 104 is called SMPC (System Manager & Peripheral Control), and has a function of collecting peripheral data from the PAD 2b via the connector 2a in response to a request from the main CPU 101. The main CPU 101 performs processing based on the peripheral data received from the sub CPU 104. Arbitrary peripherals such as a PAD, a joystick, and a keyboard can be connected to the connector 2a. The sub CPU 104 has a function of automatically recognizing the type of peripheral connected to the connector 2a (main body side terminal) and collecting peripheral data and the like according to a communication method according to the type of peripheral.

  The video block 11 includes a VDP (Video Display Processor) 120 that draws characters and the like made of polygon data of a video game, and a VDP 130 that draws a background screen, synthesizes polygon image data and background images, and performs clipping processing. Yes. The VDP 120 is connected to the VRAM 121 and the frame buffers 122 and 123. Polygon drawing data representing a video game machine character is sent from the main CPU 101 to the VDP 120 via the SCU 100 and written to the VRAM 121. The drawing data written in the VRAM 121 is drawn in the drawing frame buffer 122 or 123 in a format of 16 or 8 bits / pixel, for example. The drawn data in the frame buffer 122 or 123 is sent to the VDP 130. Information for controlling drawing is provided from the main CPU 101 to the VDP 120 via the SCU 100. Then, the VDP 120 executes drawing processing according to this instruction.

  The VDP 130 is connected to the VRAM 131, and image data output from the VDP 130 is output to the encoder 160 via the memory 132. The encoder 160 generates a video signal by adding a synchronization signal or the like to the image data, and outputs the video signal to the TV receiver 5. As a result, a game screen is displayed on the TV receiver 5.

  The sound block 12 includes a DSP 140 that performs speech synthesis in accordance with the PCM method or the FM method, and a CPU 141 that controls the DSP 140 and the like. The audio data generated by the DSP 140 is converted into a 2-channel signal by the D / A converter 170 and then output to the speaker 5b.

  The subsystem 13 includes a CD-ROM drive 1b, a CD I / F 180, a CPU 181, an MPEG AUDIO 182 and an MPEG VIDEO 183. The sub-system 13 has functions for reading application software supplied in the form of a CD-ROM, reproducing moving images, and the like. The CD-ROM drive 1b reads data from a CD-ROM. The CPU 181 performs processing such as control of the CD-ROM drive 1b and error correction of the read data. Data read from the CD-ROM is supplied to the main CPU 101 via the CDI / F 180, the bus 106, and the SCU 100, and used as application software. MPEGAUDIO 182 and MPEG VIDEO 183 are devices for restoring data compressed according to the MPEG standard (Motion Picture Expert Group). By restoring the MPEG compressed data written in the CD-ROM using these MPEG AUDIO 182 and MPEG VIDEO 183, it is possible to reproduce a moving image.

  FIG. 3 is an explanatory diagram for explaining a case where a soccer game is performed as an example of a game in a 3D virtual game space formed in the computer system.

  In the figure, a soccer court is formed on the xz plane of the 3D virtual space. The longitudinal direction (left-right direction) of the coat is defined in the x-axis direction, the lateral direction (depth direction) of the coat is defined in the y-axis direction, and the height direction is defined in the z-axis direction. An object of each player (not shown) is arranged on the court, and the player controls the movement of the player who is the main character by the input device. A line object is drawn on the ground to form a soccer court. In this virtual game space, a virtual camera (viewpoint) for displaying the state in the field of view on the two-dimensional monitor screen by performing coordinate conversion or the like is arranged, and the game is relayed.

  4 and 5 are explanatory diagrams for explaining the focus of the present invention. In FIG. 4, a line object is arranged on the ground by a combination of polygons for forming lines (hereinafter referred to as line polygons), and a drawn soccer court as shown in FIG. 3 is formed. The This line is often displayed on the screen when the camera position in the game space is at an angle looking down from above, but the line that occupies the screen as the angle in the vertical direction (y-axis direction) of the camera approaches the horizontal direction. The area of will decrease and will gradually disappear from the monitor screen. In addition, even when the line polygon and the camera face each other, that is, when the normal vector of the line polygon and the line-of-sight vector of the camera are parallel, if the viewpoint position is sufficiently far away, On a two-dimensional projection screen obtained by coordinate transformation of a three-dimensional virtual space, there may be a case where a line polygon is too thin to be displayed. This is inconvenient for games that are supposed to be played in a line (or court).

  Therefore, in the first invention, the position coordinates of some vertices of the line polygon are changed to increase the area reflected on the camera under the condition that the line is difficult to be displayed on the monitor screen. In other words, in the relative relationship with the camera, the line / polygon arranged on the ground as viewed from the camera, the height of the vertex located in the back direction is slightly raised as shown in FIG. -Increase the polygon area.

  FIG. 6 is a flowchart for explaining an algorithm for performing such processing.

  First, when a line polygon (or line object) exists in the field of view of a camera that observes each object placed in the virtual game space, a corresponding flag is set by a program (not shown). If this is determined in the main program (not shown), line loss prevention processing is executed (S102, Yes).

  First, it is determined whether the vertex of the line polygon is located behind or in front of the camera. As shown in FIG. 7, there is a method in which the distances l1 and l2 between the camera and the vertex P1 and between the camera and the vertex P3 are calculated, and the back and front of the vertex are discriminated by the magnitude of both distances.

  Further, as shown in FIG. 8, there is a method of determining the depth and front of the vertices P1 and P3 by comparing the angles θ1 and θ3 of the vertices P1 and P3 with the angles φ1 and φ3 of the camera. Either of the two methods can be used in the present embodiment. However, the latter method has an advantage that the amount of calculation in hardware is smaller than that of the former method.

  Therefore, in the determination of the back and front of the vertex of the line polygon in steps 104 to 110 described below, the latter method of comparing the angles will be described.

  One line / polygon data is read from an object table (not shown) representing an object group arranged in the scene (S104). FIG. 9 shows an example of line polygon data. For example, in addition to the coordinate values (xn, zn) of the world coordinate system, the data of the vertices P1 to P4 of the polygon are preliminarily in front of the vertices. An angle value or the like determined for the determination is associated.

  Next, as shown in FIG. 8, the current position in the world coordinate system (xz plane) of the camera and the angle φn in the direction of the vertex Pn of the line polygon as viewed from this camera position are read. The angle φn can be obtained by a trigonometric function from the coordinates of the vertex Pn of the line polygon and the coordinates of the camera position (S106).

  Next, the vertex of the line polygon is compared with the camera angle (S108). For example, in FIG. 8, it is assumed that the angle preset at the vertex P1 is 90 degrees and the angle preset at the vertex P3 is 270 degrees. When the angle φ1 from the x-axis of the line-of-sight vector connecting the camera and the vertex P1 is 120 degrees, 120 degrees−90 degrees = 30 degrees <90 degrees (where 90 degrees is the discrimination reference value in this case). Therefore (S108), it is determined as the vertex of the edge at the back of the line (S110).

  When the angle φ3 from the x-axis of the line-of-sight vector connecting the camera and the vertex P3 is 150 degrees, 150 degrees−270 degrees = ABS (−120 degrees)> 90 degrees (where 90 degrees is used in this case) Since the discrimination reference value used and ABS is an absolute value) (S108), it is discriminated as the vertex of the edge before the line (S110).

  If the vertex Pn is an edge before the line object, the height of the vertex Pn is not adjusted, and the vertex data of the next line polygon is read (No in S110).

  When the vertex Pn is an edge before the line object (S110, Yes), it is determined whether or not the distance to the vertex Pn is 10 m or less. When it is 10 m or less (S112, Yes), that is, when the camera is close to the line, since the line is normally reflected on the screen, the height of the vertex Pn is not adjusted and the next line is not adjusted. Data on the vertexes of the polygon is read (S112, No).

  When the distance to the vertex Pn is 10 m or more (S112, No), that is, when the camera is usually away from the line, the line is difficult to see. The value in the y-axis direction (height direction) of the coordinate data is increased by a predetermined value, and the back edge of the line polygon is raised from the ground (S114). Such processing is performed for each vertex of all lines and polygons on the screen (S116).

  As a result, the inner edge of the line object arranged in the virtual game space rises as shown in FIG.

  Next, an embodiment of the second invention will be described. In the second invention, the game field (soccer ground) is divided into predetermined areas, the area where the ball is located is judged, and the camera angle is adjusted so that the moving direction of the ball (the direction the player wants to see) can be seen well. It is.

  FIGS. 10 to 12 illustrate the moving direction of the player and the preferred direction of the camera when moving in that direction.

  First, as shown in FIG. 3, the camera basically moves along the side line and faces the player. Of course, the camera can enter the field and follow the game.

  When the player controlled by the player moves in the rearward direction (z-axis direction) of the xy plane (FIG. 10A), the camera is directed in the z-axis direction (FIG. 10B).

  When the player controlled by the player moves in the left direction (−x axis direction) of the xy plane (FIG. 11A), the ball advances toward the predetermined angle, for example, −15 degrees from the z axis direction. The screen display in the direction area is increased ((b) in the figure). Here, the clockwise direction is defined as a positive direction and the counterclockwise direction is defined as a negative direction.

  When the player controlled by the player moves in the right direction (x-axis direction) of the xy plane (FIG. 12 (a)), the camera is turned to a predetermined angle from the z-axis direction, for example, 15 degrees in the traveling direction, and the ball The screen display of the area in the traveling direction is increased ((b) in the figure).

  An example of determining the viewpoint direction of the camera by combining the adjustment of the camera angle and the area of the game field will be described with reference to the flowcharts of FIGS.

  First, this routine for adjusting the left / right angle of the camera is executed at a predetermined timing (condition) determined in a main program (not shown), and it is determined whether the gazing point of the camera is on the player side or the ball side (S132). ).

  When the player is on the player side (S132, player), it is determined whether or not the gazing point is within a predetermined distance, for example, 8 m from the penalty area of the soccer court (S134). When the distance is within 8 m (S134, Yes), the enemy and teammates gather in the vicinity of the penalty area, increasing the chances of passing and shooting (Fig. 15). Tilt about -15 degrees with respect to the axis (S136, FIG. 16).

  When it is 8 m or more away from the penalty area (S134, No), the player's traveling direction is determined (S138). When the player moves forward (FIG. 17) and backward (FIG. 18), the angle of the camera with respect to the player in the xz plane is set to 0 degrees (S140, FIG. 19). When the player moves to the left (FIG. 20), the angle of the camera with respect to the player is set to an angle of −15 degrees from the z axis (S142, FIG. 21). When the player moves to the right (FIG. 22), the angle of the camera with respect to the player is set to an angle of 15 degrees from the z axis (S144, FIG. 23).

  Next, when the position of the gazing point of the camera is on the ball (S132, ball), it is determined whether the distance between the ball and the player is a predetermined distance, for example, 15 m or more (S146). When the distance is 15 m or more (S146, Yes, FIG. 24), the camera angle is determined so that the line-of-sight vector from the ball toward the player is 20 degrees from the z axis (S154, FIG. 25). When the positions of the player and the ball are reversed with respect to the z-axis, the camera angle is determined so that the line-of-sight vector from the ball to the player is −20 degrees from the z-axis (S154, FIG. 26).

  When the distance between the ball and the player is not a predetermined distance, for example, 15 m or more (S146, No), it is determined whether or not the gazing point of the camera is within 8 m from the penalty area (S148). When the camera gazing point is within 8 m from the penalty area (S148, Yes, FIG. 27), the camera gaze vector is set to an angle of −15 degrees with respect to the z-axis (FIG. 28). As shown in FIG. 26, when the positions of the ball and the player are reversed, the direction of the camera is determined to be 15 degrees from the z axis.

  Furthermore, when the distance between the ball and the player is within 15 m and the camera gazing point is not within 8 m from the penalty area (S148, No, FIG. 29), the camera gaze vector is set to 0 degree (z The angle is set to 0 degree with respect to the axis (FIG. 30). After completing these processes, the process returns to the main program.

  When the camera moves along the side line, if the angle of the camera from the z-axis direction is too large, the player inputs the movement of the player in the x and z directions with an input device such as a pad or joystick. In this case, it may be difficult to operate because it does not directly correspond to the movement direction of the player on the screen. For this reason, an angle of about 15 degrees is good.

  In this way, the camera angle in the xz plane is adjusted according to the area of the game field of the player so that the traveling direction of the ball can be seen well.

  Next, angle adjustment in the vertical direction (y-axis direction) of the camera will be described. FIG. 31 is a flowchart for explaining processing for adjusting the angle in the vertical direction of the camera, and is executed at a predetermined timing (predetermined condition) determined by a main program (not shown). The height position of the camera is not limited to this, but is usually set to a height of about 10 m. In this routine, as shown in FIG. 32, an angle at which this camera looks down on the game field is set according to the game area. That is, the position of the gazing point of the camera is determined (S162). When the gazing point is on the player (S162, player), it is determined whether or not the gazing point is near the penalty area (S164). When the gazing point is not near the penalty area (No in S164), the camera direction is determined so that the camera's line-of-sight vector is -8 degrees from the z-axis direction in order to show a relatively wide range. (S166). Here, the case where the camera is facing downward is represented as a negative angle, the case where the camera is facing upward is represented as a positive angle, and the horizontal is represented as 0 degree. If the gazing point is in the vicinity of the penalty area (S164, Yes), the camera direction is determined so that the camera's line-of-sight vector is -11 degrees from the z-axis direction (S168). As a result, the camera is looked down more, and an image with a more 3D stereoscopic (depth) feeling can be obtained.

  When the gazing point is on the ball (S162, ball), it is determined whether or not the gazing point is in the vicinity of the penalty area (S170). When the gazing point is not in the vicinity of the penalty area (S170, No), the orientation of the camera or the like is determined so that the camera's line-of-sight vector is -11 degrees from the z-axis direction (S166). If the gazing point is in the vicinity of the penalty area (S170, Yes), the camera orientation is determined so that the camera's line-of-sight vector is -13 degrees from the z-axis direction (S174).

  When these processes are completed, the process returns to the main program.

  FIG. 33 is a flowchart for explaining camera zoom adjustment. If it is determined in the main program that the zoom adjustment of the camera should be performed, the routine proceeds to this routine.

  First, it is determined whether or not the gazing point of the camera is in the vicinity of the penalty area (S182). If it is in the vicinity of the penalty area, the camera is pulled away from the gazing point to a predetermined distance, and zoom-down is performed (S184). This allows you to see the entire penalty area.

  When the camera's gazing point is not near the penalty area (S182, No) and the player is outside the screen (S186, Yes), zoom-down is performed in order to display the player on the screen (S188). As shown in FIG. 34, when the player exists in the screen (S186, No) and the player is within 3/4 of the screen (S190, Yes), the camera moves from the gazing point to a predetermined distance. The camera is moved so as to be closer, and zoom-up is performed (S190). Thereby, it is possible to close up the player in a state where a certain range is visible. If the player is on the screen but is not within 3/4 of the screen (S190, No), the distance between the camera and the point of gaze is maintained (S194).

  FIG. 35 is a flowchart for explaining another example in which an object that should be prevented from disappearing from the screen, such as the line polygon described above, can be displayed.

  In the figure, attribute data indicating that the data of the polygon to be prevented from disappearing is a target of the disappearance preventing power is attached in advance. When displaying the object group in the field of view of the virtual camera on the screen, it is determined by the computer system whether or not there is a polygon to be prevented from disappearing in the field of view (S202).

  When there is a loss prevention polygon, for example, a line polygon (S202, Yes), a polygon loss prevention program is executed. That is, as shown in FIG. 36, a unit line-of-sight vector is obtained from the camera gazing point and the camera position (S204). A unit normal vector is obtained from the data of the polygon to be prevented from disappearing (S206). An angle formed by the unit line-of-sight vector and the unit normal vector is obtained. This can be obtained as the inner product of the unit line-of-sight vector and the unit normal vector (S208). The coordinate value of the vertex of the polygon is adjusted so that this angle becomes a predetermined angle (S210). The processing from step 204 to step 210 is performed for each polygon to be prevented from disappearing in the field of view. Here, Step 202 corresponds to the disappearance prevention execution means, Steps 204 to 208 correspond to the angle calculation means, and Step 310 corresponds to the polygon inclination means.

  Even in this way, it becomes possible to prevent lines and the like essential for the game from being lost.

  The present invention is not limited to a soccer game, but can be applied to various games such as tennis, baseball, basketball, volleyball, rugby, American football, etc. in which a line is drawn on the ground or court. Thus, the zoom of the camera is adjusted according to the area and display state.

  A program for realizing the game apparatus and the screen display method as described above in a computer system is provided by being recorded on an information recording medium, for example, a CD-ROM, a DVD-ROM, a ROM cassette, or the like.

It is explanatory drawing which shows the example of a whole structure of a game device. It is a block diagram explaining the circuit structure of a game device. It is explanatory drawing explaining the virtual game space formed in a game device. It is explanatory drawing explaining the appearance of the line drawn on a camera position and ground. It is explanatory drawing explaining the process which raises the vertex of the back side edge of a line polygon, and makes a line visible. It is a flowchart explaining a line disappearance prevention process. It is explanatory drawing explaining the positional relationship of the vertex of a line polygon, and a camera. It is explanatory drawing explaining the positional relationship of the vertex of a line polygon, and a camera. It is explanatory drawing explaining the example of the data of the vertex of a line polygon. FIG. 10A is an explanatory diagram for explaining the movement of the player in the back and front directions. FIG. 6B is an explanatory diagram for explaining the direction of the line-of-sight vector of the camera at that time. FIG. 11A is an explanatory diagram illustrating the movement of the player in the left direction. FIG. 6B is an explanatory diagram for explaining the direction of the line-of-sight vector of the camera at that time. FIG. 12A is an explanatory diagram for explaining the movement of the player in the right direction. FIG. 6B is an explanatory diagram for explaining the direction of the line-of-sight vector of the camera at that time. It is a flowchart explaining the angle adjustment process to the left-right direction of a camera. It is a continuation of the flowchart explaining the angle adjustment process to the left-right direction of a camera. It is explanatory drawing explaining the case where the camera's point of interest exists in a player. It is explanatory drawing explaining the example of angle adjustment of a camera in case a gaze point exists within 8 m from a penalty area. It is explanatory drawing explaining the case where the advancing direction of a player is a near direction. It is explanatory drawing explaining the case where the advancing direction of a player is a back direction. It is an explanation for explaining an example of the direction of the line-of-sight vector of the camera when the traveling direction of the player is the back / front direction. It is explanatory drawing explaining the example which a player moves to left direction. It is explanatory drawing explaining angle adjustment of the camera when a player moves to left direction. It is explanatory drawing explaining the example which a player moves to the right direction. It is explanatory drawing explaining angle adjustment of the camera when a player moves rightward. It is explanatory drawing explaining an example when the attention point of a camera exists in a ball | bowl. It is explanatory drawing explaining the example of the adjustment angle of a camera when a ball | bowl and a player are 15 m or more away. It is explanatory drawing explaining the other example of the adjustment angle of a camera when a ball | bowl and a player are 15 m or more away. It is explanatory drawing explaining the case where the gazing point of a camera exists within 8 m from a penalty area. It is explanatory drawing explaining the angle adjustment of a camera when the attention point of a camera exists within 8 m from a penalty area. It is explanatory drawing explaining the case where a gazing point is not within 8 m from a penalty area. It is explanatory drawing explaining angle adjustment of a camera when a gaze point is not within 8 m from a penalty area. It is a flowchart explaining adjustment of the up-down angle of a camera. It is explanatory drawing explaining adjustment of the up-down angle of a camera. It is a flowchart explaining zoom adjustment of a camera. It is explanatory drawing explaining the area where the player of a screen exists. It is a flowchart explaining the example of another object disappearance prevention. It is explanatory drawing explaining object disappearance prevention.

Explanation of symbols

10 CPU block 11 Video block 12 Sound block 13 Subsystem

Claims (10)

  An object is arranged in a virtual space formed in a computer system, a game is developed while controlling the movement of the object according to a rule determined as an input operation, and a state in which the state in the virtual space is viewed from a virtual camera A game device for displaying, a polygon arranged on a reference plane serving as a reference in the virtual space, a determination means for determining a positional relationship between the polygon and the virtual camera, and corresponding to the determination result A game apparatus comprising: a polygon inclining unit that inclines the polygon so that an area of the polygon seen from the virtual camera is increased.   The game apparatus according to claim 1, wherein the reference plane is a ground, and the polygon is a polygon that forms a line arranged on the ground.   2. The game apparatus according to claim 1, wherein the polygon is a quadrangle, and the polygon inclining unit changes a coordinate value of a vertex belonging to one of the opposing sides of the polygon.   An object is arranged in a virtual space formed in a computer system, a game is developed while controlling the movement of the object according to a rule determined as an input operation, and a state in which the state in the virtual space is viewed from a virtual camera A game device for displaying, a determination unit for determining whether or not the object exists in a specific area in the virtual space, and a camera angle adjustment unit for adjusting an angle of the virtual camera based on the determination result And a game device comprising:   The game apparatus according to claim 4, wherein the camera angle adjustment unit adjusts the angle of the virtual camera based on the determination result and the moving direction of the object.   The game apparatus according to claim 4, wherein the camera angle adjusting unit adjusts the angle of the virtual camera in at least one of a horizontal direction and a vertical direction in the virtual space.   As a screen in which an object is arranged in a virtual space formed in a computer system, a game is developed while controlling the movement of the object according to a rule determined as an input operation, and the state in the virtual space is viewed from a virtual camera A display device for determining whether the object exists within a specific area in the virtual space; and a zoom adjusting unit for adjusting a visual field range of the virtual camera based on the determination result. A game device comprising:   A game device having image generation and display means for generating a two-dimensional image obtained by viewing a virtual space composed of a three-dimensional shape model composed of a plurality of polygons from an arbitrary viewpoint, and displaying the generated image on a display device. Angle calculation means for calculating an angle formed by a line segment connecting the gazing point and a normal line of a predetermined polygon arranged in the virtual space, and the angle calculated by the angle calculation means is a predetermined value. As described above, a game apparatus comprising: a polygon inclination means for changing the coordinate value of the vertex of the polygon.   A game apparatus having image generation and display means for generating a two-dimensional image obtained by viewing a virtual space composed of a three-dimensional shape model composed of a plurality of polygons from an arbitrary viewpoint, and displaying the generated image on a display device. Including a data for operating the polygon loss prevention program, and a loss prevention polygon having a loss prevention attribute, wherein the loss prevention program determines a mutual positional relationship between the loss prevention polygon and the viewpoint And a coordinate value changing means for changing the coordinate value of the vertex of the disappearance preventing polygon according to the determination result of the position determining means, and the polygon drawn on the display device is the disappearance preventing polygon. A game apparatus comprising: a loss prevention execution unit that executes the loss prevention program in a certain case.   An information recording medium storing a program for causing a computer system to function as the game device according to claim 1.

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