JP3179739B2 - Driving game machine and recording medium storing driving game program - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a driving game machine for displaying a three-dimensional image, which changes when a vehicle is simulated by a player's operation, in real time on a monitor, and stores such a driving game program. It relates to a recorded recording medium.

[0002]

2. Description of the Related Art Conventionally, a player sits on a seat provided with operating parts such as a steering wheel, an accelerator pedal and a brake pedal to imitate a driver's seat of an automobile, and looks at a three-dimensional image displayed on a monitor. Driving game machines that operate the operation unit to run a vehicle simulated on a screen have become widespread. In this driving game machine, on the road on the screen,
In addition to the vehicle driven by the player (hereinafter, referred to as the own vehicle), an enemy vehicle as a competitor and a general vehicle (hereinafter, referred to as another vehicle) functioning simply as an obstacle are displayed. Then, the player enjoys the game by running at high speed on a three-dimensional road having a curve or a height difference and overtaking another vehicle.

[0003]

However, in the above-mentioned conventional driving game machine, there is no one provided with a curved mirror provided adjacent to a curved portion of a three-dimensional road. Until the vehicle finished passing the curve, it was not possible to determine the running condition of the other vehicle on the other side of the curve.

[0004] The present invention has been made in view of the above,
There is provided a driving game machine having a curved mirror provided adjacent to a curved portion of a three-dimensional road and displaying a reflected image on the curved mirror so as to increase the fun of the game. The purpose is to:

Further, according to the present invention, in a game in which a car simulates on a three-dimensional road provided with a curved mirror adjacent thereto, a reflection image is superimposed on a curved mirror displayed on a monitor and displayed. It is an object of the present invention to provide a recording medium storing such a driving game program.

[0006]

SUMMARY OF THE INVENTION The present invention displays a three-dimensional image, which changes in accordance with the driving of a simulated car on a three-dimensional road set in a three-dimensional coordinate system in a game space, on a monitor in real time. Driving game machine,
Vehicle control means for controlling the running of the vehicle in response to operation of the operation means on the three-dimensional road; and coordinate data of a curve mirror set in a three-dimensional coordinate system at a position adjacent to the three-dimensional road. Mirror coordinate data storage means for performing
Display processing means for performing two-dimensional image processing to display an image within the field of view of the own vehicle on the monitor, and displaying an image reflected on the curve mirror over the displayed curve mirror, A display processing unit configured to determine the coordinate data of the vehicle controlled by the vehicle control unit; a vehicle coordinate data determining unit configured to determine the coordinate data of the vehicle controlled by the vehicle control unit; and the coordinate data of the curve mirror and the coordinate data of the vehicle. A line-of-sight direction calculating means for calculating a line-of-sight direction with respect to the curve mirror having a position as a viewpoint; and a viewpoint distance from the position of the vehicle to the curve mirror using the coordinate data of the curve mirror and the coordinate data of the vehicle. The viewpoint distance calculation means to be calculated and the angle formed between the reflection surface of the curve mirror obtained from the coordinate data of the curve mirror and the line of sight are used to calculate the camera angle. Gaze reflection direction calculation means for calculating a gaze reflection direction in which the gaze is reflected by the boom mirror; and mirror viewpoint coordinate calculation for calculating coordinates of a mirror viewpoint in a direction opposite to the gaze reflection direction and separated from the curve mirror by the viewpoint distance. Means for calculating the size of the curve mirror on the monitor using the coordinate data of the curve mirror and the coordinate data of the vehicle, and using the calculated size to calculate the size of the curve mirror viewed from the viewpoint. Angle-of-view calculating means for calculating the angle of view, and image creating means for creating an image within the range of the angle of view when viewing the line-of-sight reflection direction from the mirror viewpoint and not less than the viewpoint distance, The created image is horizontally inverted and superimposed on the curved mirror (claim 1).

According to this configuration, the own vehicle travels on the three-dimensional road set in the three-dimensional coordinate system in the game space in accordance with the operation of the operating means, performs three-dimensional image processing, and executes the three-dimensional image processing. An image of a three-dimensional road within the visibility range is displayed. Further, the coordinate data of the own vehicle controlled by the own vehicle control means is determined, and using the coordinate data of the curve mirror and the coordinate data of the own vehicle, the line-of-sight direction with respect to the curve mirror from the position of the own vehicle as a viewpoint, The viewpoint distance from the car position to the curve mirror is calculated. Then, a line-of-sight reflection direction in which the line of sight is reflected by the curve mirror is calculated using the angle formed by the calculated line-of-sight direction and the reflection surface of the curve mirror. The coordinates of the mirror viewpoint separated by a distance are calculated. On the other hand, the size of the curve mirror on the monitor is calculated using the coordinate data of the curve mirror and the coordinate data of the own vehicle, and the angle of view when viewing the curve mirror from the viewpoint is calculated using the calculated size. Is done. Then, an image is created within the range of the angle of view as viewed from the mirror viewpoint in the line-of-sight reflection direction and at a distance equal to or greater than the viewpoint distance. They are displayed in layers. As a result, a reflection image of the curve mirror can be easily created in a short time, and the operation means can be operated while watching the image reflected on the curve mirror, thereby increasing the realism and fun of the driving game. It will be.

The angle-of-view calculating means calculates the size of the curve mirror on the monitor in a two-dimensional coordinate system using the two-dimensional coordinates of the coordinate data of the curve mirror and the coordinate data of the vehicle. Then, the angle of view is calculated in a two-dimensional coordinate system using the calculated size (claim 2).

According to this configuration, the calculation of the size of the curve mirror on the monitor and the calculation of the angle of view can be performed more easily in a shorter time.

The driving game machine according to claim 1 or 2, further comprising a general vehicle control means for controlling the running of a plurality of general vehicles, wherein the three-dimensional road includes a traveling lane on which the general vehicles travel and an oncoming lane. The general vehicle travels in the same direction as the own vehicle in the traveling lane, and travels in the opposite direction to the own vehicle in the opposite lane.

[0011] According to this configuration, the ordinary vehicle travels on the traveling lane and the oncoming lane of the three-dimensional road set in the three-dimensional coordinate system in the game space. The vehicle travels on the traveling lane or the oncoming lane, and a three-dimensional image including the traveling lane and the general vehicle on the oncoming lane that is within the visibility range of the own vehicle and that changes according to the traveling of the own vehicle is displayed on the monitor. Then, the own vehicle travels while overtaking the ordinary vehicle in the traveling lane, while avoiding collision with the ordinary vehicle in the oncoming lane, and looking at the reflection image displayed on the curve mirror from the side of the curve of the three-dimensional road. The avoidance operation can be performed by seeing a general vehicle approaching the oncoming lane, which increases the fun of the driving game.

[0012] Further, the present invention is a recording medium in which a driving game program in which a vehicle simulates traveling on a three-dimensional road set in a three-dimensional coordinate system in a game space based on an operation of an operation means is recorded, The driving game program is provided adjacent to the three-dimensional road, includes a curve mirror set in a three-dimensional coordinate system in the game space, and is within a view range of the own vehicle, An image display step of displaying a three-dimensional image that changes in accordance with the traveling of the vehicle in real time on a monitor, and a mirror reflection image display step of displaying an image reflected on the curve mirror over the displayed curve mirror, The mirror reflection image display step includes an own vehicle coordinate data determining step of determining the coordinate data of the own vehicle, and the mirror reflection image setting step set in the three-dimensional coordinate system. A line-of-sight direction calculating step of calculating a line-of-sight direction with respect to the curve mirror from the position of the vehicle using the coordinate data of the vehicle mirror and the coordinate data of the vehicle running; A viewpoint distance calculating step of calculating a viewpoint distance from the position of the own vehicle to the curve mirror using the coordinate data of the vehicle; and an angle between the reflection surface of the curve mirror obtained from the coordinate data of the curve mirror and the line of sight. A gaze reflection direction calculating step of calculating a gaze reflection direction in which the gaze is reflected by the curve mirror using the above, and calculating a coordinate of a mirror viewpoint in a direction opposite to the gaze reflection direction and separated by the viewpoint distance from the curve mirror. Mirror viewpoint coordinate calculating step, and using the coordinate data of the curve mirror and the coordinate data of the own vehicle on the monitor. Angle of view of calculating the angle of view of the curved mirror viewed from the viewpoint using the calculated size, and viewing the line of sight from the mirror viewpoint. An image creation step of creating an image within the range of the angle of view and greater than or equal to the viewpoint distance; and an image inversion step of horizontally inverting the created image horizontally and superimposing the image on the curve mirror. A recording medium in which a driving game program characterized by the following is recorded (claim 4).

According to this structure, the same operation as in the first aspect is performed, whereby the reflection image of the curve mirror is easily created in a short time, and the operation means is operated while watching the image reflected on the curve mirror. Can be operated, and the realism and fun of the driving game are increased. Further, by configuring the recording medium with a portable recording medium such as a CD-ROM, an optical disk, a memory card, a floppy disk, or the like, it becomes easy to exchange or update the game program.

[0014]

DESCRIPTION OF THE PREFERRED EMBODIMENTS First, the configuration of an embodiment of a driving game machine according to the present invention will be described with reference to FIG. FIG. 14 is a perspective view showing the appearance of the same embodiment.

This driving game machine comprises a driver's seat 1 and a monitor 2, and this driver's seat 1 has a chair 3, a steering wheel 4, an accelerator pedal 5, a brake pedal 6, and a gear, like the driver's seat of an automobile. A change lever 7 is provided. In the driver's seat 1, a coin insertion slot 8 for inserting coins is arranged on the front left of the chair 3, and a start switch 9 for instructing the start of the game is arranged on the right side of the steering wheel 4. I have. The monitor 2 is disposed at a position in front of the driver's seat 1 where the player sitting on the chair 3 can easily see the image, and displays an image formed by a CRT, LCD, projector, or the like.

Next, an outline of a coordinate system and a driving game used for image processing of the game performed in the embodiment will be described with reference to FIGS. FIG. 10 is an explanatory diagram schematically showing a field of a driving game performed by the game machine, FIG. 11 is a diagram schematically showing a part of a circuit road 12, and FIG. FIG. 13A shows a straight road 120.
(B) is a diagram showing a curved mirror 13 set adjacent to the orbiting road 12, (a) is a plan view, (b) is a monitor 2
Shows the display state of.

A field 11 shown in FIG. 10 represents the entire space represented in a computer graphics image. The field 11 is composed of a circuit road 12 set substantially along the periphery and a circular road 12 of the circuit road 12. FIG. 13 (a) includes a schematic model of a building or the like set in the periphery, that is, individual objects displayed on a computer graphics screen.
As shown in (b), a curved mirror 13 is provided adjacent to the outside of the curved portion of the circuit road 12. The orbiting road 12 has a predetermined start point, and as shown in FIG. 11, the road models (1), (2),..., (18), (18) are provided at predetermined fixed distances from the start point. 19), ...

The three-dimensional world coordinate system (X, Y, Z) shown in FIG. 10 is a coordinate system set in the field 11, and the shape information of the model such as the curve mirror 13 is based on the world coordinate system (X , Y, Z). The three-dimensional local coordinate system (x, y, z) is
In the coordinate system set in the subspace in the field 11, the shape information of each of the road models (1), (2),... Is described using a unique local coordinate system (x, y, z). ing.

A straight road 120 shown in FIG. 12 is formed by replacing the surrounding road 12 with a straight line along the center line. The two-dimensional course coordinate system (x, y) shown in FIG. 12 is a coordinate system set on the straight road 120, the y coordinate represents the distance from the start point, and the x coordinate represents the position in the width direction. I have.

As shown in FIG. 11 and FIG.
2, that is, the straight road 120 is set to two lanes having a traveling lane and an oncoming lane, and a predetermined road model of the circuit road 12 has an escape lane outside the traveling lane or the oncoming lane. That is, the road model (1), ...,
(6) and road models (13), ..., (19), ... are outside the oncoming lane, road models (8), ..., (11) are outside the traveling lane,
Each has an escape lane.

The road models (1), (8), (1) in FIG.
As shown in 3), the road width that can be driven in the evacuation lane setting start model is gradually increased, and the road models (6), (1)
As shown in 1), the width of the road on which the vehicle can travel in the evacuation lane setting end model is gradually reduced.

In the game played by the driving game machine of the present embodiment, a general vehicle functioning as an obstacle runs on a circuit lane 12 on a traveling lane and an oncoming lane while overtaking a general vehicle traveling on the traveling lane. In this system, a player competes for his / her speed by running the vehicle on a traveling lane, an oncoming lane, or an evacuation lane without colliding with an end of a road or a general vehicle. The general vehicles traveling on the traveling lane and the oncoming lane are controlled on the game machine side so as to travel in the center of each lane. In this game machine, dozens of general vehicles are set.

According to the position and orientation of the own vehicle, a model of a building or the like around the orbiting road 12 located within the range of the field of view of the own vehicle or the general vehicle is displayed on the monitor 2. ing. At this time, when the curve mirror 13 provided on the curved portion of the circuit road 12 is located within the field of view of the own vehicle, an image reflected on the curve mirror 13 is superimposed on the curve mirror 13 by a procedure described later. Is displayed.

As described above, the oncoming lane on which the ordinary vehicle travels is provided, and the own vehicle can run not only on the traveling lane but also on the oncoming lane. Thereby, the thrill and realism as a driving game can be improved.

Further, since an evacuation lane is provided at a preset distance in which the vehicle can travel, the vehicle can travel at a high speed, and must return to the traveling lane or the oncoming lane before the evacuation lane ends. However, increasing complexity can make the game even more interesting.

Further, since the curved mirror 13 is provided and an image reflected on the curved mirror 13 is displayed, it is possible to know the existence of an ordinary vehicle in the oncoming lane located on the side opposite the curve of the surrounding road 12. It is possible to increase the sense of reality and complexity of the game, for example, by performing the avoiding operation of the ordinary car on the near side of the curve, thereby making the game more interesting.

FIG. 1 is a block diagram showing a control system according to this embodiment. The control system includes the monitor 2, the start switch 9, the coin detection unit 21, the driving operation unit 22, the RO
M23, RAM 24 and control unit 25.

The start switch 9 is operated by a player. When the start switch 9 is pressed by the player, a switch signal to that effect is sent to the controller 25. The coin detector 21 detects a coin inserted into the coin insertion slot 8 (FIG. 14), and a detection signal is sent to the controller 25.

The operation section 22 comprises the steering wheel 4, the accelerator pedal 5, the brake pedal 6, and the gear change lever 7, and the rotation angle of the steering wheel 4 and the depression of the accelerator pedal 5 and the brake pedal 6. The operation data of each part relating to the operation position of the gear change lever 7 is transmitted to the own vehicle control unit 255 of the control unit 25 which will be described later.

The ROM 23 stores the program of the driving game, the coordinate data of the field in the world coordinate system, the coordinate data of each model in the local coordinate system, the course data in the course coordinate system, and the vehicle engineering. A program on the behavior of the car,
Correspondence data between the world coordinate system and the local coordinate systems and table data shown in Tables 1 to 3 described below are stored. The RAM 24 temporarily stores data and the like.

The control unit 25 is composed of a CPU, a logic circuit, and the like, and controls the operation of the driving game machine. In step 14), it is determined whether or not a coin has been inserted, and it is determined whether or not the start switch 9 has been pressed by the player based on the presence or absence of a switch signal from the start switch 9.

The control unit 25 includes a world coordinate system processing unit 251, a course coordinate system processing unit 252, a course coordinate system conversion unit 253, a world coordinate system conversion unit 254, and a mirror processing unit 250.

The world coordinate system processing unit 251 performs control processing in the world coordinate system, and includes a host vehicle control unit 255 and a drawing processing unit 256. The course coordinate system processing unit 252 performs control processing in the course coordinate system, and includes a general vehicle control unit 257, a movement determination unit 258, and a position determination unit 259.

The own vehicle control unit 255 of the world coordinate system processing unit 251 uses the operation data of each unit transmitted from the driving operation unit 22 and the vehicle behavior program according to the vehicle engineering stored in the ROM 23. , For controlling the traveling of the own vehicle. The course coordinate system conversion unit 253 converts coordinate data relating to the position of the vehicle controlled by the world coordinate system into coordinate data of the course coordinate system.

The general vehicle control unit 257 of the course coordinate system processing unit 252 controls the running of a plurality of general vehicles on the straight road 120 (FIG. 1).
2) The above is controlled by the course coordinate system, and the running control of each car is performed under the conditions where the running speed, acceleration and deceleration, etc. are set in advance, and the ordinary car is controlled to run in the center of each lane. are doing.

The general vehicle control unit 257 controls the appearance of a predetermined number of general vehicles. The general vehicle control unit 257 controls the general vehicles within a predetermined distance L before and after the own vehicle. The total number n of the fluctuating general vehicles is compared with a preset value N, and when n <N, a new general vehicle is caused to appear within the set range. At this time, assuming that the number of ordinary vehicles in the traveling lane is n ₁ and the number of ordinary vehicles in the oncoming lane is n ₂ , the ratio r = n ₂ / n ₁ of the number of ordinary vehicles between the lanes is set in advance. The lane in which a general vehicle appears is determined so as to approach the value R. That is, if r ≧ R, the driving lane is r <R.
If so, a general car should appear in the oncoming lane.

In the general vehicle control unit 257, since the y coordinate of the course coordinate system corresponds to the travel distance, the general vehicle in the travel lane simply adds (sampling interval) × (travel speed) to the current y coordinate. Therefore, the position of each vehicle can be easily obtained by simply subtracting (sampling interval) × (traveling speed) minutes from the current y coordinate for the oncoming lane.

The position determination unit 259 determines the positional relationship between the own vehicle and a general vehicle such as contact or collision, the general vehicle's positional relationship, and the own vehicle and the road edge on the straight road 120 (FIG. 12) in the course coordinate system. Is determined. In addition, a general vehicle located within a predetermined range of visibility of the own vehicle is determined. At this time, the coordinate data converted by the course coordinate system conversion unit 253 is used as the position coordinate data of the own vehicle. The visibility range of the own vehicle is set by the left and right angles with respect to the traveling direction of the own vehicle and the distance from the own vehicle.

When the position determination unit 259 determines that a contact or collision has occurred between the own vehicle and a general vehicle or between the own vehicle and a road edge, a collision signal is transmitted to the drawing processing unit 256. It is supposed to.

The movement determining unit 258 uses the positional relationship between the own vehicle and the general vehicle and between the general vehicles determined by the position determining unit 259 and determines the determination target within the general vehicle according to a procedure shown in FIG. This is to determine whether the own vehicle or another general vehicle is present in front of the same lane when viewed from a certain vehicle, and this determination result is used when the general vehicle control unit 257 controls the traveling of each vehicle. .

The world coordinate system conversion unit 254 converts the position coordinate data of a general vehicle determined by the position determination unit 259 to be within the field of view of the own vehicle from the course coordinate system to the world coordinate system according to a procedure shown in FIG. It is converted to a coordinate system.

The drawing processing unit 256 of the world coordinate system processing unit 251 controls the orbiting road 12 (FIG. 10) within the field of view of the own vehicle according to the position and orientation of the own vehicle controlled by the own vehicle control unit 255. A model of a building or the like around the orbiting road 12 and a general vehicle converted into the world coordinate system are displayed on the monitor 2 by performing known three-dimensional image processing such as geometry processing and rendering processing. The drawing processing unit 256
Causes the monitor 2 to display a screen that spins and vibrates when the collision signal is transmitted from the position determination unit 259.

The mirror processing unit 250 includes a vehicle control unit 255
It is determined whether or not the curve mirror 13 exists within the field of view of the own vehicle according to the position and orientation of the own vehicle controlled by the vehicle. When the curve mirror 13 exists, the light is reflected by the curve mirror 13. In order to create a reflected image that can be viewed, a left-right inverted image of the reflected image is obtained according to a procedure described later.

When the curve mirror 13 is present within the field of view of the vehicle, the drawing processing unit 256 further inverts the image obtained by the mirror processing unit 250 horizontally in the left and right directions. The display is superimposed on the curve mirror 13.

As described above, the position determination unit 259
The determination of the positional relationship between the own vehicle and the general vehicle, between the general vehicles, between the own vehicle and the road edge, and the determination of the general vehicle located within the visibility range of the own vehicle are performed using the two-dimensional course coordinate system. And discrimination can be easily and quickly performed. As a result, the width of the road on which the vehicle can travel due to the provision of the evacuation lane varies, but it is determined only by comparing the x-coordinate values in the two-dimensional course coordinate system whether or not the vehicle has contacted or collided with the road edge. Therefore, it is possible to easily determine the contact or the collision in a short time. For this reason, an evacuation lane can be set at an arbitrary position, and the game can be made more interesting.

In addition, since the control of the general vehicle is performed by the two-dimensional course coordinate system processing unit 252 and only the general vehicle displayed on the monitor 2 is converted to the three-dimensional world coordinate system, the load on the CPU is reduced. Without increasing, the number of controllable general vehicles can be increased. In addition, control of ordinary vehicles on the oncoming lane in which the traveling direction is opposite can be easily performed. Thereby, the game can be made more interesting, and a realistic three-dimensional image can be displayed on the monitor 2.

Next, the movement judgment by the movement judgment unit 258 will be described with reference to FIG. FIG. 2 is a flowchart showing the procedure of the movement determination. The coordinate data of the vehicle to be determined in the course coordinate system is (x ₀ , y ₀ ), the coordinate data of the vehicle k other than the determination target is (x _k , y _k ), and the width of one lane of the straight road 120 is D. Here, k is an integer of 1 to m, and it is assumed that there are m general vehicles and own vehicles other than the determination target.

First, it is determined whether or not the magnitude of x _k −x ₀ is less than or equal to D (step S1). If it is less than D (YES in step S1), it is determined whether or not y _k > y ₀ (step S1). S3) If y _k > y ₀ (YE in step S3)
S), it is determined that the vehicle k is located ahead of the determination target vehicle (step S5).

On the other hand, if the magnitude of x _k −x ₀ is not equal to or smaller than D in step S1 (NO in step S1), car k is not located on the same lane as the subject vehicle, and step S3 Is not y _k > y ₀ (N in step S3)
O), the car k is not located in front of the subject vehicle, and in any case, it is determined that the car k is not located in front of the subject vehicle (step S7).

The above procedure is performed for vehicles 1 to
If m is performed, all vehicles located ahead of the vehicle to be determined can be searched.

In the computer control of a driving game, the above-described movement determination is the most complicated and has a lot of processing procedures. However, when a general vehicle is driven under a condition in which a speed or the like is set, another vehicle is moved forward. It is necessary to determine whether or not it exists by using the above-described movement determination or the like. Also,
If the position of each vehicle is calculated using three-dimensional coordinate data and the three-dimensional image display is performed by using the three-dimensional coordinate data to determine the positional relationship between the vehicles and to perform the above-described movement determination, the game program becomes complicated and has many processing procedures. Would.

However, by using the two-dimensional course coordinate system, the above-described movement determination can be easily performed as shown in FIG. Therefore, as many as several tens of ordinary vehicles can be used, thereby increasing the fun of the game.

Next, referring to FIGS. 1 and 14, FIG.
The operation of the present driving game machine will be described with reference to the flowchart of the main routine of the present driving game machine.

When the power is turned on, a demonstration screen is displayed on the monitor 2 by the drawing processing unit 256 (step S1).
1). Next, it is determined whether or not a coin has been inserted into the coin insertion slot 8 (Step S13). If no coin has been inserted (NO in Step S13), Step S11 is performed.
Is continued (YES in step S13), the drawing processing unit 256 displays a start screen (step S15).

Next, it is determined whether or not the start switch 9 has been pressed (step S17). If the start switch 9 has not been pressed (NO in step S17), the display of the start screen in step S15 is continued, and the start switch is displayed. When 9 is pressed (YES in step S17), the game is started, and the player operates each part of the driving operation unit 22 to run the own vehicle.

Then, the operation data of each unit transmitted from the driving operation unit 22 is taken into the own vehicle control unit 255 (step S19), and the simulation processing according to the vehicle engineering is performed according to the vehicle behavior program stored in the ROM 23. Is performed (step S21), and the position coordinate data of the own vehicle determined in this process is stored in the course coordinate system conversion unit 25.
The data is converted into data of the course coordinate system by the step 3 (step S23).

Next, the position data of the own vehicle is updated by the position determination unit 259 (step S25), and the general vehicle control unit 257 determines the position of the general vehicle according to the situation determined by the movement determination unit 258 such as the positional relationship of each vehicle. A moving process is performed (step S27), and subsequently, a predetermined number of ordinary vehicles appearing process is performed (step S28).

Next, the position judging section 259 searches for a general vehicle located within the field of view of the own vehicle (step S2).
9) The position data of the general car is converted from the course coordinate system to the world coordinate system by the world coordinate system conversion unit 254 according to a procedure described later (step S3).
1).

Next, it is determined whether or not the curve mirror 13 exists within the field of view of the own vehicle (step S3).
3) If the curve mirror 13 does not exist (NO in step S33), the process proceeds to step S37. If the curve mirror 13 exists (YES in step S33), the mirror processing unit 250 performs a mirror process described later. (Step S35).

Then, three-dimensional image processing is performed by the drawing processing unit 256 from the ordinary vehicle converted into the world coordinate system and the position and orientation of the own vehicle determined by the simulation processing performed in step S21. Monitor 2
Is displayed (step S37). The operation of step S37 when the curve mirror 13 exists within the field of view of the vehicle and the mirror processing described later is performed in the mirror processing unit 250 will be described later.

Next, it is determined whether or not a preset time has elapsed from the start of the game (step S39).
If the elapsed time has not elapsed (NO in step S39), the process returns to step S19 and performs the same processing to repeat the traveling control. If the set time has elapsed (YE in step S39).
S) The time is up and the processing ends.

The start of the game may be started by inserting a coin even if the start switch 9 is not pressed. Further, the game may be ended when the set number of rounds of the circuit road has been reached, even if the set time has not elapsed.

FIG. 4 is a flowchart of a subroutine of step S31 in FIG. First, referring to the road model search table shown in Table 1, a road model where a car is located is searched from the coordinate data of the car in the course coordinate system (step S51).

[0064]

[Table 1]

Table 1 shows a part of the road model search table stored in the ROM 23. The road model search table is composed of the y-coordinate of the straight road 120 shown in FIG. Are shown.

Next, referring to the model arrangement data table shown in Table 2, coordinate data in the world coordinate system corresponding to the origin of the local coordinate system describing the road model obtained in step S51 is searched (step S53). .

[0067]

[Table 2]

Table 2 shows a part of the model arrangement data table stored in the ROM 23. The model arrangement data table is composed of a local coordinate system for describing the shape information of each road model and a world coordinate system. The positional relationship is shown.

Next, the road model shape information obtained in step S51 is searched with reference to the road model shape table shown in Table 3 (step S55).

[0070]

[Table 3]

Table 3 shows a part of the road model shape table stored in the ROM 23. The road model shape table has information on the shape of each road model.

The shape information indicates the number of lanes, the shape of a straight line, a right curve or a left curve, and the presence or absence of an evacuation lane. In the case of a curve, the center of curvature and the radius of curvature are further represented by a local coordinate system. Indicated by

Further, in the case of a retreat lane, the distinction of the start or end and the distinction of the traveling lane or the oncoming lane are further shown. Instead of this distinction, data on the road width in the road model may be provided. As a result, data on the road edge can be obtained.

Subsequently, the coordinate data of the car in the local coordinate system of the road model is calculated from the coordinate data of the car in the course coordinate system and the shape information obtained in step S55 (step S57).

Then, the coordinate data of the road model in the world coordinate system obtained in step S53 and
From the coordinate data of the car in the local coordinate system obtained in 57, the coordinate data of the car in the world coordinate system is calculated (step S59).

FIG. 5 is a flowchart of the mirror processing subroutine of step S35 in FIG. 3, and FIGS. 6 to 8 are explanatory diagrams for explaining the operation procedure of the subroutine. In the following, the position of the vehicle in the world coordinate system is referred to as a viewpoint.

First, as shown in FIG.
A gaze direction is calculated using the coordinate data of the center O and the viewpoint P of No. 3, and a reflection gaze direction in which the gaze direction is reflected on the mirror surface of the curved mirror 13 at a reflection angle θ equal to the incident angle θ is calculated. On the other hand, the distance d between the center O of the curved mirror 13 and the viewpoint P is calculated. Then, the position coordinates of the mirror viewpoint Q, which is a point at a distance d in the direction opposite to the direction of the reflection line of sight from the curved mirror 13, are calculated (step S61).

Next, a three-dimensional world coordinate system (X, Y,
Z) is converted into a two-dimensional coordinate system (X, Y) as shown in FIG. 7 by converting the curve mirror 13 set in (Z) and the viewpoint P expressed in the world coordinate system (X, Y, Z). The position of the curve mirror 13 on the monitor 2 as viewed from the viewpoint P is calculated, and the angle of view α of the curve mirror 13 is calculated by calculating the size of the curve mirror 13 on the monitor 2 (step S63).

Subsequently, as shown in FIG. 8, a range of the angle of view α is obtained when viewed from the mirror viewpoint Q, and an image in this range is created (step S65).

Here, referring to FIG. 9, step S in FIG. 3 when the curve mirror 13 exists within the field of view of the own vehicle.
The drawing processing operation of No. 37 will be described. FIG. 9 (a)
(B) and (c) are illustrations for explaining the drawing processing operation of the reflected image on the curve mirror 13.

According to the mirror processing subroutine of FIG.
As shown in FIG. 9A, when an image in the range of the angle of view α as viewed from the mirror viewpoint Q is created, the image reflected on the mirror appears to be inverted left and right. As shown in FIG.
An image obtained by horizontally inverting (a) horizontally is obtained. Then, at the position of the curve mirror 13 on the monitor 2, FIG.
The image shown in FIG. 9B is superimposed, and the reflection image on the curved mirror 13 is displayed on the monitor 2 as shown in FIG.

As described above, by obtaining the mirror viewpoint Q corresponding to the viewpoint P, it is possible to easily create a reflection image that is reflected by the curved mirror 13. Further, by converting the image into the two-dimensional coordinate system and calculating the angle of view α of the curve mirror 13, the reflected image of the curve mirror 13 can be obtained at high speed without increasing the load on the CPU.

Note that this is a type of image generation algorithm often used in computer graphics,
Ray tracing, which generates an image by calculating the attenuation while following the ray path, can be used to obtain an accurate reflection image of a curved mirror.However, ray tracing is computationally intensive, so real-time processing is required. In order to display an image on a computer, a high-speed operation performance equivalent to that of a workstation is required, so that it is difficult to apply the present invention to a game machine.

However, according to the present invention, the curve mirror 1 can be easily and quickly reduced without increasing the calculation load.
3 reflection images can be obtained. As a result, for example, the presence of a general vehicle in the oncoming lane can be known just before the curve, so that the game can be made more interesting, for example, the avoidance operation can be performed.

Next, a description will be given of a modification in which players can compete with each other. In this modification, two driving game machines shown in FIG. 14 are connected to each other by a communication cable, and the control system of each driving game machine is:
In addition to the components of the above embodiment, a communication control unit 26 shown by a dashed line in FIG. 1 is provided.

The communication control unit 26 transmits the coordinate data of the position of the vehicle converted by the course coordinate system conversion unit 253 in the course coordinate system to the other driving game machine, and is controlled by the other driving game machine. It receives coordinate data on the position of its own vehicle, that is, the enemy vehicle of the driving game machine in the course coordinate system, and sends it to the position determination unit 259.

In this modification, the position determination unit 259 further determines the positional relationship between the host vehicle and the enemy vehicle and the positional relationship between the general vehicle and the enemy vehicle, and sets a predetermined visibility of the host vehicle. An enemy vehicle located within the range is determined. When it is determined that contact or collision has occurred between the own vehicle and the enemy vehicle, a collision signal is sent to the drawing processing unit 256.

The movement judging section 258 further judges whether or not the enemy vehicle exists ahead of the same lane. When the position determination unit 259 determines that the enemy vehicle is located within the field of view of the own vehicle, the world coordinate system conversion unit 254 further converts the position coordinate data of the enemy vehicle from the course coordinate system to the world coordinate system. Convert to Further, the drawing processing unit 256 further displays the enemy vehicle converted into the world coordinate system on the monitor 2.

As described above, since the communication control unit 26 is provided to transmit and receive the position data relating to the own vehicle of each game machine, it is possible to further enhance the fun of the driving game by enabling the players to compete with each other. it can.

Further, as in the case of the general vehicle, the position data of the enemy vehicle is handled by the coordinate data of the two-dimensional course coordinate system. The determination can be made easily and quickly.

The present invention is not limited to the above-described embodiment or modification, but may employ the following embodiments (1) to (9). (1) In the above modification, the communication control unit 26 transmits the position data of the own vehicle in the world coordinate system obtained by the own vehicle control unit 255 and the position of the own vehicle controlled by the other driving game machine. May be received in the world coordinate system. In this case, the course coordinate system conversion unit 253 converts the coordinate data into the coordinate data of the course coordinate system, and then sends the coordinate data to the position determination unit 259.

(2) In the above modification, the control unit 25
Instead of being provided for each driving game machine, only one for controlling a plurality of driving game machines may be provided. In this case, the communication control unit 26
Is unnecessary, a world coordinate system processing unit 251 is provided corresponding to each game machine, and the determination, determination, and determination are performed in the course coordinate system processing unit 252, the course coordinate system conversion unit 253, and the world coordinate system conversion unit 254 in the same manner as described above. Discrimination and conversion processing may be performed.

(3) In the above modification, the number of driving game machines to be connected is not limited to two, and three or more driving game machines may be connected. Even in this case,
Since the position data of the enemy vehicle is handled by the coordinate data in the two-dimensional course coordinate system, the position determination by the position determination unit 259 and the determination within the field of view can be easily and quickly performed. As a result, the number of enemy vehicles can be increased, and thereby the fun of the driving game can be further increased.

(4) In the above-described modified embodiment, an enemy vehicle control unit for controlling the traveling of the enemy vehicle with a predetermined ability may be provided instead of the communication control unit 26, and the communication control unit 26 may not be connected to another driving game machine. . In this case, even a single player can enjoy the competition with the enemy vehicle, and the fun of the driving game can be increased.

(5) In FIG. 5, when converting from the course coordinate system to the world coordinate system, in the curve of the orbiting road 12, vehicles traveling in the inner lane are slightly decelerated and vehicles traveling in the outer lane are decelerated. You may make it accelerate somewhat.
As a result, the deviation between the straight road 120 and the surrounding road 12 can be corrected.

(6) In FIG. 11, the division of the road model of the circuit road 12 may be long for a straight line and short for a curve, and may be performed at different distances. In this case, the number of road models can be reduced.

(7) The orbiting road 12 is divided into a plurality of blocks, and data relating to the road width of the orbiting road 12 is stored in the ROM 23 for each block in the world coordinate system, and is stored in the position determination unit 259 of the course coordinate system processing unit 252. Alternatively, the own vehicle control unit 255 of the world coordinate system processing unit 251 may determine the collision between the own vehicle and the road edge on a block basis. In this case, if it is determined that a collision has occurred, a collision signal may be transmitted from the vehicle control unit 255 to the drawing processing unit 256. Thus, the collision determination can be easily performed for any road width only by storing the road width data of each block in the ROM 23.

(8) As shown in FIG. 11, the orbiting road 12 basically has two lanes, a traveling lane and an oncoming lane, except for an evacuation lane. May be increased to a plurality of lanes. This can make the game more complex and interesting.

(9) The ROM 23 may be constituted by a portable recording medium such as a CD-ROM, an optical disk, a memory card and a floppy disk. by this,
It is possible to easily exchange and update game programs.

[0100]

As described above, according to the present invention,
The own vehicle is driven in accordance with the operation of the operating means on the three-dimensional road set in the three-dimensional coordinate system in the game space, and the three-dimensional image processing is performed, and the image of the three-dimensional road within the visual range of the own vehicle is obtained. Is displayed on a monitor, and the coordinate data of the own vehicle controlled by the own vehicle control means is determined. The direction and the viewpoint distance from the position of the own vehicle to the curve mirror are calculated, and the line-of-sight reflection direction at which the line of sight is reflected by the curve mirror is calculated using the calculated line-of-sight direction and the angle formed by the reflection surface of the curve mirror. The coordinates of the mirror viewpoint in the direction opposite to the line of sight reflection and separated from the curve mirror by the viewpoint distance are calculated. On the other hand, the coordinates on the monitor are calculated using the coordinate data of the curve mirror and the coordinates of the vehicle. Calculate the size of the boom mirror, calculate the angle of view when viewing the curve mirror from the viewpoint using the calculated size, and within the range of the angle of view when viewing the gaze reflection direction from the mirror viewpoint. By creating an image within the range of the above-mentioned viewpoint distance or more, and by horizontally flipping the created image horizontally and superimposing it on the curve mirror, the reflection image of the curve mirror can be easily created in a short time. It can be carried out. In addition, the operating means can be operated while looking at the reflection image of the curved mirror, whereby the realism as driving can be increased and the fun of the driving game can be increased.

The size of the curve mirror on the monitor is calculated in a two-dimensional coordinate system using the two-dimensional coordinates of the coordinate data of the curve mirror and the coordinate data of the vehicle, and the calculated size is used to calculate the size of the curve mirror. By calculating the angle of view in the two-dimensional coordinate system, the calculation of the size of the curve mirror on the monitor and the calculation of the angle of view can be performed more easily in a shorter time.

Further, the vehicle is provided with general vehicle control means for controlling the traveling of a plurality of general vehicles, and the three-dimensional road has a traveling lane on which the general vehicles travel and an oncoming lane. By traveling in the opposite direction and traveling in the opposite direction to the own vehicle in the oncoming lane, the own vehicle runs while overtaking the ordinary vehicle in the traveling lane while avoiding collision with the ordinary vehicle in the oncoming lane, and has a curved mirror. It is possible to perform an operation of avoiding a general vehicle in the oncoming lane approaching from the side of the curve of the three-dimensional road by looking at the reflection image of the three-dimensional road, thereby increasing the fun of the driving game.

Also, the present invention is a recording medium in which a driving game program for driving a vehicle simulated on a three-dimensional road set in a three-dimensional coordinate system in a game space based on an operation of an operation means is recorded, The driving game program is provided adjacent to the three-dimensional road, includes a curve mirror set in a three-dimensional coordinate system in the game space, and is within a view range of the own vehicle, An image display step of displaying a three-dimensional image that changes in accordance with the traveling of the vehicle in real time on a monitor, and a mirror reflection image display step of displaying an image reflected on the curve mirror over the displayed curve mirror, The mirror reflection image display step includes an own vehicle coordinate data determining step of determining the coordinate data of the own vehicle, and the mirror reflection image setting step set in the three-dimensional coordinate system. A line-of-sight direction calculating step of calculating a line-of-sight direction with respect to the curve mirror from the position of the vehicle using the coordinate data of the vehicle mirror and the coordinate data of the vehicle running; A viewpoint distance calculating step of calculating a viewpoint distance from the position of the own vehicle to the curve mirror using the coordinate data of the vehicle; and an angle between the reflection surface of the curve mirror obtained from the coordinate data of the curve mirror and the line of sight. A gaze reflection direction calculating step of calculating a gaze reflection direction in which the gaze is reflected by the curve mirror using the above, and calculating a coordinate of a mirror viewpoint in a direction opposite to the gaze reflection direction and separated by the viewpoint distance from the curve mirror. Mirror viewpoint coordinate calculating step, and using the coordinate data of the curve mirror and the coordinate data of the own vehicle on the monitor. Angle of view of calculating the angle of view of the curved mirror viewed from the viewpoint using the calculated size, and viewing the line of sight from the mirror viewpoint. An image creation step of creating an image within the range of the angle of view and greater than or equal to the viewpoint distance; and an image inversion step of horizontally inverting the created image horizontally and superimposing the image on the curve mirror. By using the recording medium on which the driving game program characterized by the above is recorded, it is possible to operate the operation means while watching the reflection image of the curve mirror, thereby increasing the realism and fun of the driving game. Can be.

[Brief description of the drawings]

FIG. 1 is a block diagram showing a control system of an embodiment of a driving game machine according to the present invention.

FIG. 2 is a flowchart illustrating a procedure of movement determination.

FIG. 3 is a flowchart of a main routine of the driving game machine.

FIG. 4 is a flowchart showing a subroutine of step S31 in FIG. 3;

FIG. 5 is a flowchart showing a subroutine of step S35 in FIG.

FIG. 6 is an explanatory diagram for describing a procedure of a mirror processing subroutine of step S35 in FIG. 3;

FIG. 7 is an explanatory diagram for describing a procedure of a mirror processing subroutine of step S35 in FIG. 3;

FIG. 8 is an explanatory diagram for describing a procedure of a mirror processing subroutine in step S35 of FIG. 3;

FIGS. 9A, 9B, and 9C are explanatory diagrams for describing a drawing processing operation of a reflected image on the curved mirror 13. FIGS.

FIG. 10 is an explanatory diagram schematically showing a field of a driving game performed by the game machine.

FIG. 11 is a diagram schematically showing a part of a circuit road.

FIG. 12 is a diagram illustrating a straight road in which a circuit road is virtually replaced.

13A and 13B are diagrams showing a curved mirror set adjacent to a circuit road, where FIG. 13A is a plan view and FIG. 13B shows a display state of a monitor.

FIG. 14 is a perspective view illustrating an appearance of a driving game machine according to an embodiment of the present invention.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Driver's seat 2 Monitor 9 Start switch 12 Orbiting road (3D road) 13 Curve mirror 21 Coin detection unit 22 Driving operation unit 23 ROM (Mirror coordinate data storage means) 24 RAM 25 Control unit 250 Mirror processing unit (Display processing unit) 251 World coordinate system processing unit 252 Course coordinate system processing unit 253 Course coordinate system conversion unit 254 World coordinate system conversion unit 255 Own vehicle control unit 256 Drawing processing unit (display processing unit) 257 General vehicle control unit 258 Movement determination unit 259 Position determination Department

Claims (4)

(57) [Claims] 1. A driving game machine for displaying, in real time, a three-dimensional image, which changes according to the driving of a simulated car on a three-dimensional road set in a three-dimensional coordinate system in a game space, on a monitor. Self-vehicle control means for controlling traveling of the self-vehicle in accordance with operation of the operation means on a three-dimensional road, and a mirror for storing coordinate data of a curve mirror set in a three-dimensional coordinate system at a position adjacent to the three-dimensional road Coordinate data storage means and display for performing an image processing within the field of view of the vehicle by performing three-dimensional image processing on the monitor, and displaying an image reflected on the curve mirror so as to be superimposed on the displayed curve mirror. Processing means, wherein the display processing means comprises: vehicle coordinate data determining means for determining coordinate data of the vehicle controlled by the vehicle control means; Line-of-sight direction calculating means for calculating a line-of-sight direction to the curve mirror with the position of the vehicle as a viewpoint using the coordinate data of the boom mirror and the coordinate data of the vehicle; and coordinate data of the curve mirror and the coordinates of the vehicle. A viewpoint distance calculating means for calculating a viewpoint distance from the position of the host vehicle to the curve mirror using data, and an angle between the reflection surface of the curve mirror obtained from the coordinate data of the curve mirror and the line of sight. A gaze reflection direction calculating means for calculating a gaze reflection direction at which the gaze is reflected by the curve mirror; and a mirror for calculating coordinates of a mirror viewpoint in a direction opposite to the gaze reflection direction and separated from the curve mirror by the viewpoint distance. Viewpoint coordinate calculation means, and the size of the curve mirror on the monitor using the coordinate data of the curve mirror and the coordinate data of the own vehicle. Angle-of-view calculating means for calculating the angle of view of the curved mirror viewed from the viewpoint using the calculated size, and within the range of the angle of view viewed from the mirror viewpoint in the line-of-sight reflection direction. A driving game machine comprising: an image creating means for creating an image having a range equal to or longer than the viewpoint distance, wherein the created image is horizontally inverted and superimposed on the curved mirror. 2. The angle-of-view calculating means calculates the size of the curve mirror on the monitor in a two-dimensional coordinate system using two-dimensional coordinates of the coordinate data of the curve mirror and the coordinate data of the vehicle. The driving game machine according to claim 1, wherein the angle of view is calculated in a two-dimensional coordinate system using the calculated size. 3. The driving game machine according to claim 1, further comprising: general vehicle control means for controlling the running of a plurality of general vehicles, wherein the three-dimensional road includes a traveling lane on which the general vehicles travel and an oncoming lane. A driving game machine, wherein the general vehicle travels in the same direction as the vehicle in the traveling lane and travels in the opposite direction to the vehicle in the opposite lane. 4. A recording medium storing a driving game program in which a vehicle runs simulated on a three-dimensional road set in a three-dimensional coordinate system in a game space based on an operation of an operation means, The driving game program is provided adjacent to the three-dimensional road, includes a curve mirror set in a three-dimensional coordinate system in the game space, and is within a view range of the own vehicle, An image display step of displaying a three-dimensional image that changes in accordance with the traveling of the vehicle in real time on a monitor, and a mirror reflection image display step of displaying an image reflected on the curve mirror over the displayed curve mirror, The mirror reflection image display step includes a vehicle coordinate data determining step of determining the coordinate data of the vehicle, and the curve set in the three-dimensional coordinate system. A line-of-sight direction calculating step of calculating a line-of-sight direction with respect to the curved mirror from the position of the host vehicle using the coordinate data of the mirror and the coordinate data of the host vehicle traveling; A viewpoint distance calculating step of calculating a viewpoint distance from the position of the own vehicle to the curve mirror using the coordinate data of the vehicle; and an angle between the reflection surface of the curve mirror obtained from the coordinate data of the curve mirror and the line of sight. A gaze reflection direction calculating step of calculating a gaze reflection direction in which the gaze is reflected by the curve mirror using the above, and calculating a coordinate of a mirror viewpoint in a direction opposite to the gaze reflection direction and separated by the viewpoint distance from the curve mirror. Mirror viewpoint coordinate calculating step, and using the coordinate data of the curve mirror and the coordinate data of the own vehicle on the monitor. Calculating the size of the curved mirror, and using the calculated size to calculate the angle of view of the curved mirror as viewed from the viewpoint, and viewing the line of sight from the mirror viewpoint. An image creating step of creating an image within the range of the angle of view and not less than the viewpoint distance, and an image inverting step of horizontally inverting the created image horizontally and overlapping the curve mirror. A recording medium having recorded thereon a driving game program.