JP2000140419A - Device and method for 3d simulation - Google Patents

Abstract

PROBLEM TO BE SOLVED: To evade a rear-end collision and contact due to a vehicle made to travel on a virtual 3D space by predicting the presence/absence of the contact of a first vehicle and a second vehicle and changing the first track of the first vehicle turned to the object of prediction in the case of predicting the presence of the contact. SOLUTION: In the case of predicting that plural automatically traveling vehicles 2 and 3 collide with the vehicle 1 of a player 1 at its rear end and get into the contact in this 3D simulation device, the new traveling track of the automatically traveling vehicles 2 and 3 for evading the rear-end collision or contact of the automatically traveling vehicles 2 and 3 is set. Then, in the case that the danger of the rear-end collision and the contact is eliminated, the traveling track until then is cancelled and the traveling track for returning the automatically traveling vehicles 2 and 3 to a predetermined traveling track is set. Thus, since the rear-end collision and the contact due to the vehicle made to travel on the virtual 3D space are evaded, a simulation operation close to an actual race is obtained.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a moving object, for example, a moving object moving on a traveling path in a virtual 3D (three-dimensional) space.
The present invention relates to a 3D simulation apparatus and method for two-dimensionally displaying a moving state of a wheeled vehicle or a two-wheeled vehicle on a display screen.

[0002]

2. Description of the Related Art Conventionally, in a game device, a moving state in which a plurality of four-wheeled vehicles or two-wheeled vehicles (hereinafter, referred to as vehicles) moves on a traveling path is displayed in a simulated manner, and one of the plurality of vehicles is played. It offers a simulation game in which a player moves manually to compete for time or compete with other vehicles.

[0003] For a vehicle that is automatically controlled by the 3D simulation device, a traveling locus on a traveling path in a virtual 3D space is predetermined, and a moving speed corresponding to each vehicle on the traveling locus is also predetermined. ing.

[0004] During the game, the 3D simulation apparatus calculates the position of the vehicle when the vehicle moves on the above-mentioned travel path at a constant period, and stores the calculated position in the storage device. For the vehicle operated by the player, information on the moving direction and the moving speed is obtained from the operation amounts of the steering wheel, accelerator, and brake pedal operated by the player. The current position of the vehicle operated by the player is obtained from the moving direction and the moving speed. The camera image obtained from the vehicle operated by the player obtained in this manner is displayed on the display screen as shown in FIG. 4, thereby giving a sense of presence as if the player is driving the vehicle. be able to. The image to be displayed is created by drawing based on 3D drawing data.

[0005]

The trajectory of the vehicle that the 3D simulation apparatus automatically drives in the virtual 3D space is predetermined. However, although the vehicle operated by the player can be known about the past, it is necessary to operate the vehicle. Since the running trajectory ahead of the current point is not known, the following problems have occurred in the game.

1) When a game beginner plays a game, the moving speed of the vehicle operated by the player decreases. Therefore, if the user moves his / her own vehicle along the same trajectory as the vehicle automatically driven by the 3D simulation device, the vehicle is automatically hit by the vehicle automatically driven by the 3D simulation device. Will be. In a normal race, since a fast vehicle overtakes a slow vehicle, such a rear-end collision is not the responsibility of the player and becomes less interesting for the game.

[0007] 2) In addition to rear-end collision, a collision accident occurs at a curved portion of the traveling road. In FIG. 1, a vehicle operated by a player is currently located at a position P in a virtual 3D space,
It is assumed that a certain vehicle that is automatically driven by the simulation device is located at the position Q and is moving in the traveling direction as shown in FIG. When the moving speed of the vehicle that is automatically driven by the 3D simulation device is higher, the probability of the two vehicles coming into contact with each other is very high. In an actual race, the moving trajectory is changed such that one or both vehicles avoid contact even in such a case.

As described above, in the conventional 3D simulation apparatus, the trajectory of the vehicle to be automatically driven must be determined in advance, and the trajectory of the vehicle operated by the player is futuristic. Because of the lack of knowledge about the game, a collision has occurred from the side of the vehicle that is traveling automatically and the game has developed.

In view of the above, an object of the present invention is to provide a 3D simulation apparatus and method capable of avoiding rear-end collision and contact caused by a vehicle traveling in a virtual 3D space as much as possible. It is in.

[0010]

In order to achieve the above object, a first aspect of the present invention is to provide a vehicle in which a plurality of first vehicles that automatically travel along a traveling path in a virtual 3D space along a first trajectory. And a 3D simulation apparatus that displays on a display a traveling state of a second vehicle that is manually traveled with an indeterminate trajectory, wherein any one of the first vehicles and the second Prediction means for predicting the presence or absence of contact of the vehicle of the second vehicle, and trajectory change means for changing the first trajectory of the first vehicle to be predicted when the contact is predicted. It is characterized by having.

According to a second aspect of the present invention, there is provided a 3D-type display device according to the first aspect.
In the simulation device, the trajectory changing means includes:
For the first vehicle whose first trajectory has been changed, a second trajectory for avoiding contact is set, and after a prediction of no contact is obtained by the prediction means, the first trajectory is obtained from the second trajectory. A third trajectory for returning to the trajectory is set.

According to a third aspect of the present invention, there is provided a 3D-type display device according to the first aspect.
In the simulation apparatus, the contact may include a rear-end collision.

According to a fourth aspect of the present invention, there is provided a 3D-type display device according to the first aspect.
In the simulation device, the trajectory changing means changes a second trajectory changed from the first trajectory in accordance with the position of the traveling path, and the trajectory changing means sets the second trajectory to the second trajectory.
The second trajectory corresponding to the position of the vehicle is selected as a trajectory to be changed.

According to a fifth aspect of the present invention, there are provided a plurality of first vehicles for automatically traveling along a traveling path in a virtual 3D space along a first trajectory, and a second vehicle for manually traveling with an undefined trajectory. A 3D simulation method of displaying a running state of a vehicle on a display, a prediction step of predicting whether or not any one of the plurality of first vehicles is in contact with a vehicle of the second vehicle; And a trajectory changing step of changing a first trajectory of the first vehicle to be predicted when the contact is predicted.

According to a sixth aspect of the present invention, there is provided a 3D image processing apparatus according to the fifth aspect.
In the simulation method, a step of setting a second trajectory for avoiding contact with the first vehicle having changed the first trajectory in the trajectory changing step;
After the contactless prediction is obtained by the prediction step,
Setting a third trajectory for returning from the second trajectory to the first trajectory.

According to a seventh aspect of the present invention, there is provided the 3D image processing apparatus according to the fifth aspect.
In the simulation method, the contact may include a rear-end collision.

[0018] The invention of claim 8 is a 3D-type display device according to claim 5.
In the simulation method, a second trajectory to be changed from the first trajectory is made different according to the position of the traveling road, and a second trajectory corresponding to the position of the second vehicle is selected as a trajectory to be changed. It is characterized by doing.

[0018]

Embodiments of the present invention will be described below in detail with reference to the drawings. First, 3D according to the present invention
The simulation method will be described. FIG. 1 shows the movement directions and the positional relationship of the two vehicles immediately before the contact. In FIG. 1, reference numeral 101 denotes the movement locus of the player so far,
02 is the movement locus of the automatically driven vehicle. P represents the current position of the player's vehicle, and Q represents the current position of the automatically traveling vehicle. The present inventor has noticed that it is possible to predict whether or not two vehicles will come into contact in the future based on the moving direction, position, and moving speed of the two vehicles, and has come to propose the present invention.

That is, when two vehicles come into contact with each other, the moving speed, the positional relationship, and the moving direction have the following relationship.

1) The traveling speed of the automatically traveling vehicle is higher than the traveling speed of the player's vehicle, and the player's vehicle is located in front of the automatically traveling vehicle. Alternatively, the traveling speed of the autonomous vehicle is lower than the traveling speed of the player's vehicle,
In addition, the player's vehicle is located behind the automatically driven vehicle.

2) The moving direction of the player's vehicle and the moving direction of the automatic traveling vehicle cross each other.

3) The straight line distance between the current positions of the two vehicles is within a predetermined range.

When all three requirements overlap, the two vehicles make contact.

The requirements for a rear-end collision are as follows.

A) The traveling speed of the automatically traveling vehicle is higher than the traveling speed of the player's vehicle. Or vice versa.

B) The trajectory of the player's vehicle coincides with the trajectory of the automatic traveling vehicle.

C) The linear distance between the current positions of the two vehicles is within a predetermined range.

Therefore, the 3D simulation apparatus determines whether or not the requirements of the above 1) to 3) and a) to c) are satisfied for each of the player's vehicle and a plurality of vehicles that are automatically driven by the 3D simulation apparatus. The presence or absence of a contact including a rear-end collision can be predicted in advance.

In the present embodiment, as will be described later, it is necessary for the 3D simulation apparatus to preliminarily determine that an automatically traveling vehicle (reference numerals 2 and 3 in FIG. 5) will collide with and touch the player's vehicle (reference numeral 1 in FIG. 5). When the prediction is made in (1), a new traveling trajectory (second trajectory) of the automatically traveling vehicle is set to avoid the rear-end collision or the collision of the automatically traveling vehicle. When the danger of the rear-end collision and the collision is eliminated, the traveling locus up to now is released, and a traveling locus (third locus) for the automatic traveling vehicle to return to the predetermined traveling locus is set. When the automatically traveling vehicle returns to the predetermined trajectory, thereafter, the vehicle automatically travels along the predetermined trajectory (first trajectory).

A 3D simulation apparatus for executing the above-described simulation processing and the contents of the processing will be described below. The software configuration of the 3D simulation device used in the game device is different from the conventional one, but the hardware configuration can be the same as the conventional one. For this reason, the description of the hardware configuration will be briefly described.

FIG. 2 shows a system configuration of the 3D simulation apparatus. In FIG. 2, a CPU 10, a ROM 1
1, RAM 12, display 13, and input device 14
Is connected to the bus. The CPU 10 controls the input device 14 according to the game program stored in the ROM 11.
, Ie, the movement-related information of the vehicle operated by the player. Further, in accordance with the game program, the CPU 10 moves a plurality of vehicles on a traveling path in the virtual 3D space, and positions a vehicle operated by a player (hereinafter abbreviated as a player's vehicle) and other vehicles,
The moving direction is stored in the RAM 12 and an image to be displayed on the display 14 is created based on the information.

The ROM 11 stores and stores the game program as well as shape data for drawing a vehicle to be displayed (so-called drawing data). RAM12
As described above, stores data relating to the position, speed, and moving direction of the vehicle of the operator and the plurality of vehicles controlled by the CPU 10 on the traveling path, and various other data for playing the game. The image to be displayed is also stored in the RAM 12.
Created with Note that a RAM dedicated to drawing may be separately provided.

The display 13 displays the created image. The input device 14 has a steering wheel, an accelerator pedal, a brake pedal, and the like, instructs a moving direction of the player's vehicle by operating the steering wheel, and controls a speed of the player's vehicle by the accelerator pedal and the brake pedal. The information input by these devices is
10 is input.

Next, a simulation process according to the present invention will be described. The vehicle operated by the player calculates the moving distance per unit time from the moving speed (input from the accelerator pedal and the brake pedal) from the start position and the moving direction (input from the steering wheel), and the calculation result is obtained. It is assumed that a new movement position is acquired from. The position of the vehicle traveling automatically is obtained by substituting the elapsed time from the start into a predetermined function. This function defines a relational expression that uses time, position, moving speed, and the like as parameters when the vehicle is moved at a predetermined moving speed along a predetermined trajectory. A conventionally known method can be used as an information processing method for acquiring the position and the moving speed of the vehicle operated by the user and the vehicle traveling automatically.

Further, a calculation formula is defined in advance in the form of a function in the form of a function for a travel locus for avoiding contact and a travel locus for returning to a predetermined travel locus. In the present embodiment, formulas for calculating the traveling trajectory of the avoidance and the return, more specifically, the position and the moving speed of the automatic traveling vehicle after a predetermined time are prepared in advance.

As the travel locus, a line segment having a desired shape such as an ellipse, a spline curve, or a straight line may be prepared. In the present embodiment, the next vehicle position after a predetermined time is acquired using the current vehicle position as a parameter.

The processing procedure of FIG. 3 is executed in a very short cycle for each of the vehicles that are automatically driven. CPU10
When one of the automatic traveling vehicles to be determined is selected, the current position and the traveling speed of the vehicle operated by the player and the current position and the traveling speed of the selected automatic traveling vehicle are read from the RAM 12 according to FIG. (Step S10).

The straight-line distance between the two vehicles is calculated and compared with a threshold (a fixed distance) in advance. It is determined whether the comparison with the threshold satisfies the requirement 3. If the calculated distance is larger than the certain distance, there is no danger of contact, so the procedure proceeds from step S10 to S100, and the next position of the selected autonomous vehicle is determined by a predetermined locus (No. The data is stored in the RAM 12 on the basis of the function for the first locus (step S100).

On the other hand, if the distance between the two vehicles is smaller than the threshold value in step S20, then the shape of the traveling path on which the automatic traveling vehicle is currently traveling is a right or left course. Ask for attributes. By comparing the position data indicating the area of the traveling path with the current position of the automatic traveling, it is possible to determine which curve or straight line portion of the traveling path the automatic traveling vehicle is located. A course attribute is set based on the attribute (step S30).

Next, the CPU 10 determines whether or not the above contact requirements 1) and 2) are acceptable. Regarding requirement 1), it is sufficient to simply compare the traveling speeds of the two vehicles. Regarding requirement 2), it is confirmed that a straight line that passes through the positions of the two vehicles and moves in the moving direction has an intersection (contact position), and that the intersection is ahead of the two vehicles in the moving direction. If there is no intersection, and if the position of the intersection is not in front of the traveling direction, the requirement of the above 2) is not satisfied, that is, it is judged (predicted) that there is no danger of contact, and the CPU 10
Determines the next moving position of the automatic driving (step S4).
0 → S100).

When the requirements 1) and 2) are satisfied, it can be predicted that there is a danger of contact.
Temporarily changes the trajectory of the automatically driven vehicle according to the previously set course attribute.

An example of a moving locus to be changed is as follows. If the attribute is a right curve and the traveling speed of the automatic traveling vehicle is higher than that of the player's vehicle, a predetermined value is set for the automatic traveling vehicle. A movement trajectory (second trajectory) located on the right side of the trajectory (first trajectory) is set. As a result, on the actual display screen of the display 13, it appears that the vehicle driven by the user is overtaking the vehicle operated by the user.

When the vehicle of the automatic traveling is slower than the vehicle of the player and the vehicle of the player is coming into contact with the vehicle from behind, the moving trajectory of the vehicle of the automatic traveling is determined by a predetermined trajectory (the first trajectory). A new trajectory (second trajectory) shifted leftward from the first trajectory) is temporarily set).

The new trajectory is determined by the relative relationship between the moving speeds of the player and the autonomous vehicle and the course attribute of the traveling path.
It is determined.

When a new trajectory (second trajectory) is set, the next movement position along the trajectory is determined and the RAM 1
2 is stored. As a result, the autonomous vehicle becomes virtual 3
This means that the vehicle is automatically traveling on a new trajectory in the D space (step S50).

When the danger of collision (collision) with a vehicle that automatically travels on a new trajectory is eliminated, the new trajectory is released and a trajectory for returning to a predetermined trajectory (first trajectory). 3) (specifically, a function for calculating the position is selected). Further, the moving position of the next automatic driving along the set trajectory is calculated,
(Steps S60 → S70 → S80).

The above-described return process is continued until the automatically traveling vehicle returns to the predetermined locus (first locus) (until a YES determination is obtained in step S70).

When the above-described processing procedure is executed for all the vehicles that are automatically traveling, and is repeatedly executed at a constant cycle, the player's vehicle displayed on the display 13 and the automatically traveling vehicle are likely to come into contact with each other. Then, it appears that the self-driving vehicle performs an operation of avoiding contact. Conventionally, such an operation has not been performed, so that the display content of the game becomes more realistic.

In the above description, contact is described. For rear-end collision, pass / fail judgments on the requirements of a) to c) are made. If there is a danger of rear-end collision, a new trajectory is set, and then the original trajectory is determined. Set the trajectory to return to.

The following embodiment can be carried out in addition to the above embodiment.

1) In the above-described embodiment, the contact between the player's vehicle and another automatic traveling vehicle is predicted. However, the avoidance operation may be performed by predicting the contact between the automatic traveling vehicles. . Further, a contact accident may be accidentally performed without performing the above-described prediction processing for a specific vehicle.

[0052]

As described above, according to the first to eighth aspects of the present invention, a player has unexpectedly come into contact with a vehicle in the past. Simulation operation similar to an actual race such as changing

[Brief description of the drawings]

FIG. 1 is an explanatory diagram for explaining a simulation method according to an embodiment of the present invention.

FIG. 2 is a block diagram illustrating a system configuration according to an embodiment of the present invention.

FIG. 3 is a flowchart illustrating a processing procedure according to the embodiment of the present invention.

FIG. 4 is an explanatory diagram showing a conventional display example.

FIG. 5 is an explanatory diagram showing a display example according to the embodiment of the present invention.

[Explanation of symbols]

 Reference Signs List 10 CPU 11 ROM 12 RAM 13 Display 14 Input device

Claims (8)

[Claims] 1. A running state of a plurality of first vehicles automatically traveling along a traveling path in a virtual 3D space along a first trajectory and a traveling state of a second vehicle manually traveling with an indeterminate traveling trajectory are displayed. A prediction means for predicting whether or not any one of the plurality of first vehicles is in contact with a vehicle of the second vehicle; and And a trajectory changing means for changing a first trajectory of the first vehicle which has been predicted. 2. The 3D simulation apparatus according to claim 1, wherein the trajectory changing means sets a second trajectory for avoiding contact with the first vehicle having changed the first trajectory and performs the prediction. A 3D simulation apparatus characterized by setting a third trajectory for returning from the second trajectory to the first trajectory after a prediction of no contact is obtained by the means. 3. The 3D simulation apparatus according to claim 1, wherein the contact includes a rear-end collision. 4. The 3D simulation apparatus according to claim 1, wherein the trajectory changing means changes a second trajectory changed from the first trajectory in accordance with the position of the traveling path, and the trajectory changing means. A 3D simulation apparatus for selecting a second trajectory corresponding to the position of the second vehicle as a trajectory to be changed. 5. A driving state of a plurality of first vehicles that automatically travel along a traveling path in a virtual 3D space along a first trajectory and a second vehicle that travels manually with an indeterminate trajectory are displayed. A prediction step of predicting whether or not any one of the plurality of first vehicles is in contact with the vehicle of the second vehicle, and that the presence of contact is predicted. And a trajectory changing step of changing the first trajectory of the first vehicle that has been predicted. 6. The 3D simulation method according to claim 5, wherein the first step is performed in the trajectory changing step.
Setting a second trajectory for avoiding contact with the first vehicle whose trajectory has been changed, and after the prediction without contact is obtained by the prediction step, the first trajectory is obtained from the second trajectory. Setting a third trajectory for returning to step (b). 7. The 3D simulation method according to claim 5, wherein the contact includes a rear-end collision. 8. The 3D simulation method according to claim 5, wherein a second trajectory changed from the first trajectory is made different from the first trajectory in accordance with the position of the traveling path, and the second trajectory is changed in accordance with the position of the second vehicle. A second trajectory to be changed is selected as a trajectory to be changed.