CN109731323B - Game system based on real-time user position - Google Patents
Game system based on real-time user position Download PDFInfo
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- CN109731323B CN109731323B CN201811645725.0A CN201811645725A CN109731323B CN 109731323 B CN109731323 B CN 109731323B CN 201811645725 A CN201811645725 A CN 201811645725A CN 109731323 B CN109731323 B CN 109731323B
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Abstract
The invention provides a game system based on real-time user position, which belongs to the field of network games and real-time communication, and comprises a user terminal, a virtual map and a GPS anchor point, wherein the user terminal is communicated with a server; the user terminal is provided with an accelerometer; the position of the user terminal in the virtual map is determined by: the position of the user terminal is obtained by the fixed position parameter of the GPS anchor point registered by the user terminal in the server and the relative displacement provided by the accelerometer of the user terminal. The game system can realize accurate positioning of game users in a virtual map, reduce communication pressure between a user terminal and a server, reduce calculation task amount of MR fusion in the server and particularly provide support for small-scale positioning in remote networked MR games at low cost.
Description
Technical Field
The invention belongs to the field of online games and real-time communication, and particularly relates to a game system capable of processing real-time position information of a user.
Background
The application of virtual reality technology (VR) and mixed reality technology (MR) in the field of games has been a successful precedent, such as the smart dream MR version released by nintendo, in the game system, a game user carries a handheld device with him or her, the game system locates the real position of the game user through a GPS in the handheld device, and sets a capture position of a sprite in a virtual map in the system, when the real position of the game user coincides with the capture position of the sprite in the virtual map, the game user can operate the handheld device to capture the sprite, so that the game experience of the game user is expanded from indoor to the whole outdoor environment, even any corner of the world, and the creative game experience is realized.
In a multi-user network game that needs to process real-time location information of users, the following problems generally exist: 1. because the general error of the GPS and Beidou universal positioning systems is about 20 meters, specific coordinates in a virtual map can correspond to different real positions aiming at different game users, and small-size direct battle is difficult to realize, so that the game mode of the existing MR network game is limited; 2. for the size of the field for playing games in a specified area and a fixed scene in a backroom class and a place class, only a larger field can be selected, and the construction and maintenance cost is higher; 3. the MR real-time fusion in a large-size field has large calculation amount, higher requirement on server hardware and higher cost of game hardware. Therefore, a game system capable of processing the real-time position information of the user with practical value is not available at present.
Disclosure of Invention
The invention aims to provide a game system capable of processing real-time position information of a user, which has practical value and can realize accurate positioning of the game user in a virtual map, reduce the communication pressure between a user terminal and a server and reduce the calculation task amount of MR fusion in the server at low cost.
The technical scheme provided by the invention is as follows:
a game system based on real-time user position comprises a user terminal communicated with a server, a virtual map stored in the server and a GPS anchor point with fixed position parameters in the virtual map; the user terminal is provided with an accelerometer; the position of the user terminal in the virtual map is determined by: the position of the user terminal is obtained by the fixed position parameter of the GPS anchor point registered by the user terminal in the server and the relative displacement provided by the accelerometer of the user terminal.
In one embodiment of the invention, the system comprises a GPS anchor point device corresponding to a GPS anchor point, and when the distance between a user terminal and the GPS anchor point device is less than a certain distance, a server receives a GPS anchor point registration request; the registration request carries the identifier of the user terminal and the identifier of the GPS anchor point.
In one embodiment of the invention, the GPS anchor point registration request is sent by the GPS anchor point device or the user terminal.
In one embodiment of the invention, the GPS anchor device array comprises a plurality of GPS anchor devices.
In one embodiment of the invention, the user terminal is provided with a GPS module, and the coordinates in the fixed position parameters of the GPS anchor point are provided by the GPS module.
In one embodiment of the invention, the user terminal is provided with a GPS module, and the fixed position parameters of the GPS anchor point corresponding to the GPS anchor point equipment are provided by the GPS module.
The beneficial effects brought by one aspect of the invention are as follows: the invention uses a plurality of GPS anchor point devices arranged in a range as a plurality of correction base points, when a game user passes through the GPS anchor point devices, the position of a user terminal worn by the game user is repositioned by the GPS anchor point devices, thereby eliminating the position error generated by continuous integration of the accelerometer and realizing the game mode based on the real-time user position with reasonable cost.
The beneficial effects brought by one aspect of the invention are as follows: the accelerometer is used for realizing positioning, small-size displacement of a game user can be conveniently captured, the requirement on the position accuracy of a virtual user in an MR game is met, the position accuracy can be generally up to centimeter units, and interaction between game users at different positions in a long distance can be realized by using the MR.
The beneficial effects brought by one aspect of the invention are as follows: the user terminal is provided with the GPS module, the fixed position parameters of the GPS anchor points corresponding to the GPS anchor point equipment are provided by the GPS module, the initialization requirements of the GPS anchor points in the virtual map can be met after each game field updates the environment, the fixed unknown parameters of the GPS anchor points in the virtual map can be established without field measurement, and the self-adaption after the field updating is realized.
The beneficial effects brought by one aspect of the invention are as follows: based on the embodiment of the invention, the relative position of the arrangement of the GPS anchor point equipment among a plurality of fields which are allowed to play the same game has an error, because in construction, the positioning with higher precision and higher cost are realized, the user terminal is provided with a GPS module, coordinates in fixed position parameters of the GPS anchor point are provided by the GPS module, positioning data of a plurality of GPS modules can be accumulated, the position deviation of the GPS anchor point equipment corresponding to the same GPS anchor point at different positions is evaluated, when the error is smaller, the smoothness of positioning can be realized by correcting the parameters of the GPS anchor point on the server, when the error is larger, the server can send out an error prompt for the GPS anchor point equipment with specified identification, and a technical staff can give an adjustment suggestion for the specified GPS anchor point equipment.
The beneficial effects brought by one aspect of the invention are as follows: the method has the advantages that the GPS anchor point with the fixed position parameter is arranged in the virtual map, the position of the user terminal is obtained by the fixed position parameter of the GPS anchor point registered by the user terminal in the server and the relative displacement provided by the accelerometer of the user terminal, the positioning mode basically has no possibility of positioning failure, when the GPS is used for positioning, particularly when the GPS is used for indoor positioning, because GPS signals are mainly used outdoors, the problem of frequent disconnection exists, the server needs to carry out a large amount of calculation to process the GPS disconnection problem, and the calculation of the MR technology on the real-time action of the virtual character is influenced.
Drawings
FIG. 1 is a system diagram of one embodiment of the present invention;
FIG. 2 is a partial schematic view of the system of the embodiment of FIG. 1;
fig. 3 is a communication block diagram of an embodiment of the present invention.
Detailed Description
The technical solution of the present invention will be further clearly described below with reference to specific examples.
Example one
As shown in FIG. 1, a networked combat type MR game system comprises A, B buildings which are respectively built at different places but have the same structure, each building occupies about 900 square meters and is provided with a three-layer structure, and any space position in the building A has any space position in the building B corresponding to the space position. For realizing long-range networking fight, a plurality of recreation users distribute respectively in two buildings, and every recreation user wears the helmet that has MR (mixed reality) function as user terminal, the helmet is with the communication of keeping networking of the server S that the operation recreation was used, the helmet top is equipped with infrared signal transmitter and the infrared signal receiver who is used for short distance communication, the inside accelerometer that is used for gathering the helmet orbit that is equipped with of helmet, the helmet has the translucent display screen that is used for fusing reality environment and virtual environment, the recreation user observes the real environment at self place through this translucent display screen. A. And 7 GPS anchor point devices such as Pa1 and Pb1 are arranged at the tops of each floor of the two buildings, each GPS anchor point device specifically comprises an infrared sensor with a downward visual field, and an infrared signal transmitter and an infrared signal receiver which are arranged on one side of the infrared sensor and have the same angle with the infrared sensor, and the infrared signal transmitter and the infrared signal receiver of the GPS anchor point device are used for realizing short-distance communication with a helmet which is worn by a game user passing through the GPS anchor point device below the GPS anchor point device.
The server S running the game application is configured with a virtual map G having the same structure as the building A, B, and specifically, as shown in fig. 2, the server S realizes a function of acquiring position coordinates Pa of a game user Ua located at a relative to the building a (corresponding position Pb and Pa at B), creating a virtual character Ua 'of the game user Ua at a corresponding position P of the virtual map G, and then projecting the virtual character Ua' on a semi-transparent display screen of a helmet worn by the Ub when the game user Ub located at B observes Pb, so as to realize other interactive functions of the game user Ub on the Ua, such as shooting, fighting and other game operations. Because all game interactions of the game user Ua in the game process are communicated with the server S or the GPS anchor point device through the user terminal worn by the game user Ua, in this embodiment, when describing the system communication relationship, the Ua and Ub are also used to represent the device worn by the user.
In this embodiment, each GPS anchor point device has a unique code identifier (i.e., ID) in the server, the server S can query the real coordinates of the GPS anchor point device by referring to the unique code identifier, and at the same time, each GPS anchor point device at a has each GPS anchor point device at B corresponding to it, and also has a unique point determined by a location in the virtual map G that corresponds to both a specific GPS anchor point device at a and a specific GPS anchor point device at B, which is a GPS anchor point in this embodiment. The database of the server S for a GPS anchor point can be represented by a record having the following data structure:
the field Coordinate is the Coordinate of the GPS anchor point P in the virtual map, or is called a fixed position parameter of the GPS anchor point P.
Specifically, as shown in fig. 2, GPS anchor point devices Pa1, Pa2, and Pa3 are arranged in the building a, and form an equilateral triangle with sides of 10 m; the GPS anchor point devices Pb1, Pb2 and Pb3 are arranged in the building B and respectively correspond to Pa1, Pa2 and Pa3, and also form an equilateral triangle with sides of 10 m; pa1, Pb1 correspond to GPS anchor point P1 in the virtual map, Pa2, Pb2 correspond to GPS anchor point P2 in the virtual map, Pa3, Pb3 correspond to GPS anchor point P3 in the virtual map, P1, P2, and P3 in the virtual map may also form an equilateral triangle whose side is 10m, in other embodiments of the present invention, shapes such as a planar quadrangle, a planar pentagon, etc. with fixed side length may also be formed between each GPS anchor point or its corresponding GPS anchor point device, or shapes such as a spatial quadrangle, a spatial pentagon, etc., with fixed side length may not be equal.
The game user can generate movement relative to a fixed building in game activities, when the game user passes through the GPS anchor point device, the user terminal worn by the game user can be identified by the GPS anchor point device and determines the identification of the GPS anchor point device through communication, and then the GPS anchor point device or the user terminal sends a GPS anchor point registration request to the server, wherein the registration request carries the identification of the user terminal and the identification of the GPS anchor point. Specifically, in the present embodiment, as shown in fig. 3, when a game user Ua located in a passes through a GPS anchor point Pa1, first, the user terminal worn by the game user is captured by the infrared sensor of Pa1 and recognized by the controller of Pa 1; then, the controller of the Pa1 activates an infrared signal transmitter and an infrared signal receiver of the controller, so that the infrared signal transmitter sends out an inquiry signal, and the inquiry signal carries the identifier of the Pa 1; when Ua enters the effective communication distance of an infrared signal transmitter of GPS anchor point equipment, an infrared signal receiver of a worn user terminal receives a query signal and returns a reply signal through the infrared signal transmitter of the user terminal, the reply signal carries an identifier of the user terminal, and the effective communication distance between all the infrared signal receivers and the infrared signal transmitter is fixed to be 1 m; and finally, the infrared signal receiver of the GPS anchor point equipment receives the reply signal, continuously sends the query signal and repeats the process. In this embodiment, after the above process is performed in one cycle, the user terminal sends a GPS anchor point registration request to the server, where the registration request carries an identifier of the user terminal and a received identifier of the GPS anchor point, and after the server receives the GPS anchor point registration request, the server updates the position of the virtual character U corresponding to the game user Ua in the virtual map to be P1. After Ua moves away from Pa1 to exceed the effective communication distance, Pa1 is interrupted in communication with the Ua-worn user terminal, and the Ua user terminal starts sending a data frame to the server, where the data frame carries the displacement of the Ua relative to Pa1, where the relative displacement can be obtained by direct integration of the accelerometer in the Ua user terminal from the Pa1 time to the time of sending the data frame, and the relative displacement is a three-dimensional spatial vector M. Preferably, the accelerometer in the user terminal of this embodiment may be a six-axis acceleration sensor MPU6050, which is an electrostatic levitation accelerometer with a measuring range of 12.5 μ gn and a sensitivity of 1 μ gn. Every time the server receives the data frame carrying the displacement amount of the user terminal relative to the Pa1, the server updates the position of the virtual character in the virtual map to P1+ M as a type of registration. Since A, B positions in the game and the position coordinates of any game user are the same in the virtual map, when the game user Ub at B observes the P1+ M point of the building at B, the server projects the virtual character of Ua on the semi-transparent display screen of the user terminal of Ub, so that the fusion of the virtual character Ua' of Ua and the real environment at B is realized in the view field of Ub.
In this embodiment, each building A, B is provided with 21 GPS anchor point devices, each floor is 7, the positions of the devices correspond to each other, any GPS anchor point device and two adjacent GPS anchor point devices form an equilateral triangle grid with sides of 10m, and the grid-shaped arrangement of the GPS anchor point devices forms a GPS anchor point device array. The GPS anchor point equipment array has the same structure as the corresponding GPS anchor point array in the virtual map G, and each unit in the array corresponds to one unit.
In this embodiment, the user terminal is further provided with a GPS module, and in the game process, the server S further carries an actual coordinate of the user terminal acquired by the GPS module in the GPS anchor point registration request received each time, where the actual coordinate is a three-dimensional spatial coordinate, records the actual coordinate in the GPS anchor point registration request received each time and an identifier of the GPS anchor point device, and adjusts the GPS anchor point corresponding to the GPS anchor point device based on the corresponding actual coordinates of a plurality of same GPS anchor point devices, and specifically, may be a multiple average value of the actual coordinate at a specific time period by updating the fixed position parameter of the GPS anchor point.
Example two
The embodiment is a networked combat MR game system, and the difference between the embodiment and the first embodiment is that a plurality of GPS anchor point devices on each floor in each building can be on different planes to obtain better spatial resolution, for example, a shelter and a tunnel with fluctuation can be arranged in the building, and the GPS anchor point devices can be arranged near the shelter and the tunnel to be used for positioning game users wearing user terminals.
EXAMPLE III
The present embodiment is a networked combat MR game system, which is different from the above embodiments in that A, B GPS positioning base points of two buildings are stored in the server S, and each GPS anchor point of the virtual map G in the server S is provided with initialization data by a GPS module in the user terminal, specifically, the following process may be performed: when the game starts, the loading server S loads A, B the identifications of two GPS anchor point devices and A, B two GPS positioning base points; after a user terminal at A and a GPS anchor point device approaching to reach an effective communication distance, a server receives a GPS anchor point registration request, the registration request carries an identification of the user terminal, the identification of the GPS anchor point and an actual coordinate provided by a GPS module of the user terminal, and the server S subtracts the actual coordinate from a GPS positioning base point at A to obtain a GPS anchor point fixed parameter corresponding to the GPS anchor point device in a virtual map G and stores the fixed parameter. This embodiment is suitable for the initialization of A, B buildings for new game fields created after retrofitting for new games.
Example four
The embodiment is a networked treasure hunting MR game system, projection display of own virtual characters on other user terminals is not needed among game users, and a server only needs to acquire operation and operation results of the user terminals at specific positions, so that the requirement on real-time refreshing of the specific positions is low. The difference between this embodiment and the first and second embodiments is that a GPS anchor point device having an active communication function and power supply connection is not provided in a field, but only an NFC chip is provided at a corresponding position, and an NFC reading device is provided on a user terminal. The specific application of this embodiment may be that an NFC chip is disposed on the secret room door, the new NFC chip stores its identifier, the identification is stored in the record of the GPS anchor point corresponding to the NFC chip on the server, when the game user holds the user terminal (in the embodiment, the user terminal is a handheld terminal with an NFC reading device) to approach the secret room door, the user terminal identifies the identification of the NFC chip and sends a GPS anchor point registration request to the server, the server registers the fixed position of the GPS anchor point corresponding to the NFC chip, the base point of the game terminal in the virtual map is provided, the point data provided by the accelerometer in the user terminal is emptied, when the user terminal leaves the secret door, the position of the user terminal in the virtual map is obtained by adding a part of the position as the base point and the other part of the position as the relative displacement obtained by restarting the integration of the accelerometer in the user terminal.
Claims (10)
1. A game system based on real-time user location, comprising a user terminal in communication with a server, characterized by:
the system also comprises a plurality of GPS anchor point devices arranged in a range;
the server stores a virtual map applied to a game, the virtual map comprises a plurality of GPS anchor points, and each GPS anchor point comprises a unique fixed position parameter determined by the position of the GPS anchor point in the virtual map and a unique code identification of the corresponding GPS anchor point equipment;
the user terminal is provided with an accelerometer;
the position of the user terminal in the virtual map is determined by: the position of the user terminal in the virtual map is obtained by the fixed position parameter of the GPS anchor point registered by the user terminal in the server and the relative displacement provided by the accelerometer of the user terminal; the fixed position parameter is a three-dimensional coordinate of the virtual map;
when the distance between the user terminal and the GPS anchor point equipment is less than one, the server receives a GPS anchor point registration request; the GPS anchor point registration request carries the identification of the user terminal and the identification of the GPS anchor point; after the server receives the GPS anchor point registration request, the position of the user terminal in the virtual map is updated;
a plurality of GPS anchor point devices in the plurality of GPS anchor point devices form a GPS anchor point device array; the grid structures of the GPS anchor point device array and the corresponding GPS anchor point array of the GPS anchor point device array in the virtual map are the same.
2. A real-time user location based gaming system according to claim 1, wherein: when the server receives a GPS anchor point registration request carrying an identification of a user terminal and an identification of a GPS anchor point, and the distance between the user terminal and the GPS anchor point equipment is more than a certain distance, the user terminal starts to send a data frame carrying the displacement of the user terminal relative to the GPS anchor point equipment to the server.
3. A real-time user location based gaming system according to claim 1, wherein: the GPS anchor point registration request is sent by the GPS anchor point equipment or the user terminal.
4. A real-time user location based gaming system according to claim 1, wherein: and the GPS anchor point array in the virtual map corresponds to the GPS anchor point equipment arrays in different ranges.
5. A real-time user location based gaming system according to claim 1, wherein: the user terminal is provided with a GPS module; the coordinates in the fixed position parameters of the GPS anchor points are provided by the GPS module, so that the initialization requirements of the GPS anchor points in the virtual map can be met after each game field updates the environment, and the fixed unknown parameters of the GPS anchor points in the virtual map can be established without field measurement.
6. A real-time user location based gaming system according to claim 5, wherein: the user terminal is provided with a GPS module; in the game process, the server receives the GPS anchor point registration request every time and also carries the actual coordinates of the user terminal acquired by the GPS module.
7. A real-time user location based gaming system according to claim 6, wherein: the server records the actual coordinates in the GPS anchor point registration request received each time and the identification of the GPS anchor point equipment, and adjusts the GPS anchor point corresponding to the GPS anchor point equipment based on the corresponding actual coordinates of a plurality of same GPS anchor point equipment.
8. A real-time user location based gaming system according to claim 7, wherein: the method for adjusting the GPS anchor point corresponding to the GPS anchor point equipment based on the corresponding actual coordinates of the same GPS anchor point equipment is that the fixed position parameter of the GPS anchor point is updated to be the multiple average value of the actual coordinates in a specific time period.
9. A real-time user location based gaming system according to claim 1, wherein: the user terminal is provided with a GPS module; each GPS anchor point of the virtual map in the server is provided with initialization data by a GPS module within the user terminal.
10. A real-time user location based gaming system according to claim 1, wherein: the user terminal is provided with a GPS module, and the fixed position parameters of the GPS anchor points corresponding to the GPS anchor point equipment are provided by the GPS module.
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