JP5443041B2 - GAME DEVICE AND GAME PROGRAM - Google Patents

Description

  The present invention relates to a game device and a game program, and more specifically to a game device and a game program that perform game processing based on operation data including angular velocity data acquired from an angular velocity sensor provided in a controller.

  2. Description of the Related Art Conventionally, there are game devices that perform game processing based on operation data including angular velocity acquired from a gyro sensor provided in a controller. For example, in the game device disclosed in Patent Document 1, the movement of the character's sword in the virtual game space is controlled based on information such as angular velocity acquired from a multi-axis gyro sensor provided in the controller.

JP 2000-308756 A

  However, in the game device described in Patent Document 1, it is not considered to set a game difficulty level in a game executed based on angular velocity data acquired from an angular velocity sensor, and the game becomes monotonous. There is a problem.

  SUMMARY OF THE INVENTION Therefore, an object of the present invention is to provide a game device and a game program capable of adjusting the difficulty level of a game in a game executed based on angular velocity data acquired from an angular velocity sensor.

  The present invention employs the following configuration in order to solve the above problems. Note that the reference numerals, figure numbers, and supplementary explanations in parentheses in this column show examples of correspondences with embodiments described later in order to help understanding of the present invention, and the present invention is not limited in any way. Not what you want.

The game device of the present invention is a game device (3) that performs game processing based on operation data (62) including angular velocity data acquired from angular velocity sensors (55, 56) provided in the controller (8). The game processing means (10), the difficulty level setting means (10), and the difficulty level control means (10) are provided.
The game processing means executes a game based on the angular velocity data (FIGS. 9 to 13) and determines success or failure of the game based on the value of the angular velocity data (S22, FIG. 21, S24, FIG. 22, S30, FIG. 25, FIG. 26).
The difficulty level setting means sets the difficulty level of the game (S32).
The difficulty level control means changes the success range of the angular velocity data determined to be successful by the game processing means based on the difficulty level set by the difficulty level setting means (S29, FIGS. 23 to 26).

  The difficulty level control means may narrow the success range as the difficulty level set by the difficulty level setting means is higher.

Another game apparatus of the present invention is a game apparatus (3) that performs a game process based on operation data (62) including angular velocity data acquired from angular velocity sensors (55, 56) provided in the controller (8). The game processing means (10), the difficulty level setting means (10), and the difficulty level control means (10) are provided.
The game processing means executes a game for moving a predetermined object (ball) in the virtual game space based on the angular velocity data (FIGS. 9 to 13).
The difficulty level setting means sets the difficulty level of the game (S32).
The difficulty level control means corrects the movement of the object in the game processing means based on the difficulty level set by the difficulty level setting means (S22, FIG. 21, S24, FIG. 22, S30, FIG. 25). FIG. 26).

  The difficulty level control means sets the object movement control parameter (azimuth angle φ) used in the game processing means to the target value (0) or target range (φ1) of the movement control parameter required in the game. It may be corrected so as to approach (φ2) (FIGS. 25 and 26).

  Further, the degree of difficulty control means may lower the degree of correcting the movement control parameter as the degree of difficulty set by the difficulty level setting means is higher.

  The game processing means may control the movement of the object based on the angular velocity data at a timing when the angular velocity data satisfies a predetermined condition.

  Further, the game processing means controls the movement of the object when the magnitude (P) of the angular velocity indicated by the angular velocity data is maximum and the maximum value of the angular velocity is larger than a predetermined threshold (throwing threshold). (S21).

  The game apparatus further includes angular velocity storage means (12) for sequentially storing angular velocity data acquired from the angular velocity sensor, and the game processing means has a maximum angular velocity (P) indicated by the angular velocity data. When the maximum value of the angular velocity is larger than a predetermined threshold (throwing threshold), the angular velocity data for a predetermined period before the angular velocity becomes maximum is read from the angular velocity storage means and the object is based on the angular velocity data The movement direction (azimuth angle φ) of the object is determined, and the difficulty level control means sets the movement direction (azimuth angle φ) of the object determined by the game processing means to the difficulty level set by the difficulty level setting means. May be corrected so as to approach the target movement direction (0) of the object required in the game by a degree according to Yes.

  In addition, the game processing means, when the angular velocity magnitude (P) indicated by the angular velocity data is maximal and the maximal value of the angular velocity is greater than a predetermined threshold (throwing threshold), The moving speed (initial speed V) and / or reach distance of the object is determined, and the difficulty level control means sets the moving speed and / or reach distance of the object determined by the game processing means to the difficulty level setting means. You may correct | amend so that it may approach the target moving speed and / or target reach | attainment distance of the said object requested | required in a game by the degree according to the difficulty set by (1).

  Further, the difficulty level setting means may change the difficulty level of the game according to the target reach distance (distance between the player character and the ring) of the object required in the game (FIG. 30).

  The game processing means executes the game based on the angular velocity data a plurality of times (S17), determines the success or failure of the game for each of the plurality of games, and the difficulty level setting means determines whether the game is The standard difficulty level of the next game is determined according to success or failure (S32), and a difficulty level offset (FIG. 30) corresponding to the target reach distance of the object required in the game is added to the standard difficulty level. By this, the difficulty level of the next game may be determined.

  In addition, the game processing means is configured to detect from the angular velocity sensor at the time when the magnitude (P) of the angular velocity indicated by the angular velocity data is maximal and the maximal acceleration is greater than a predetermined threshold (throwing threshold). The moving direction (elevation angle θ) of the object is set based on the attitude of the controller detected based on the acquired angular velocity data (S22), and the difficulty level control means is determined by the game processing means. You may correct | amend the moving direction (elevation angle (theta)) of an object so that it may approach the target moving direction of the said object requested | required in a game by the degree according to the difficulty set by the said difficulty level setting means.

  The game processing means executes the game based on the angular velocity data a plurality of times (S17), determines success / failure of each of the plurality of games, and the difficulty level setting means When it is determined that the game result is successful, the difficulty level of the next game may be set so as to be higher than the difficulty level of the current game (FIGS. 27 to 29).

  The game processing means executes the game based on the angular velocity data a plurality of times (S17), determines success / failure of each of the plurality of games, and the difficulty level setting means When it is determined that the game result is unsuccessful, the difficulty level of the next game may be set so as to be lower than the difficulty level of the current game (FIGS. 27 to 29).

  The game processing means includes first angular velocity data acquired from a first angular velocity sensor provided in a first controller operated by the first player, and a second operated by the second player. Based on the second angular velocity data acquired from the second angular velocity sensor provided in the controller, a game in which the first player and the second player play against each other is executed, and the first angular velocity data and the second angular velocity data Success / failure of the first game operation by the first player and success / failure of the second game operation by the second player are determined based on the value of the angular velocity data of the first player. The difficulty level of the operation and the difficulty level of the second game operation are individually set, and the difficulty level control means is based on the difficulty level of the first game operation set by the difficulty level setting means. Then, the success range of the first angular velocity data determined that the first game operation has been successful in the game processing means is changed, and the second game operation difficulty level set by the difficulty level setting means is changed. Thus, the success range of the second angular velocity data in which it is determined that the second game operation is successful in the game processing means may be changed.

  The difficulty level setting means sets the difficulty level of the first game operation of the next time in accordance with the success or failure of the first game operation of a certain time, and the success or failure of the second game operation of the certain time. Depending on, the difficulty level of the second game operation of the next time may be set.

The game program of the present invention is a computer (3) for a game device (3) that performs game processing based on operation data (62) including angular velocity data acquired from angular velocity sensors (55, 56) provided in the controller (8). 10) is a game program for functioning as game processing means, difficulty level setting means, and difficulty level control means.
The game processing means executes a game based on the angular velocity data (FIGS. 9 to 13) and determines success or failure of the game based on the value of the angular velocity data.
The difficulty level setting means sets the difficulty level of the game (S32).
The difficulty level control means changes the success range of the angular velocity data determined to be successful by the game processing means based on the difficulty level set by the difficulty level setting means (S29, FIGS. 23 to 26).

Another game program of the present invention is a game device (3) that performs game processing based on operation data (62) including angular velocity data acquired from angular velocity sensors (55, 56) provided in the controller (8). A game program for causing a computer (10) to function as game processing means, difficulty level setting means, and difficulty level control means.
The game processing means executes a game for moving a predetermined object (ball) in the virtual game space based on the angular velocity data (FIGS. 9 to 13).
The difficulty level setting means sets the difficulty level of the game (S32).
The difficulty level control means corrects the movement of the object in the game processing means based on the difficulty level set by the difficulty level setting means (S22, FIG. 21, S24, FIG. 22, S30, FIG. 25). FIG. 26).

  ADVANTAGE OF THE INVENTION According to this invention, the game apparatus and game program which can set the difficulty of a game in the game performed based on the angular velocity data acquired from an angular velocity sensor can be provided.

External view of game system Functional block diagram of game device The perspective view which shows the external appearance structure of an input device Perspective view showing the external configuration of the controller Diagram showing the internal structure of the controller Diagram showing the internal structure of the controller Block diagram showing the configuration of the input device The figure which outlines the state when operating a game using the input device 8 An example of a game image displayed on the screen of the television 2 An example of a game image displayed on the screen of the television 2 An example of a game image displayed on the screen of the television 2 An example of a game image displayed on the screen of the television 2 An example of a game image displayed on the screen of the television 2 Example of memory map of external main memory 12 Main flowchart showing a flow of game processing executed in the game apparatus 3 The flowchart which shows the detail of the chute process (step S16) in FIG. The figure which shows the movement of the player's arm at the time of a shoot operation The figure which shows the change of swing strength P at the time of chute operation The figure for demonstrating the detection method of the maximum value of swing strength P, and the determination method of chute timing The figure which shows the throwing direction in virtual 3D game space The figure which shows the determination method of elevation angle theta of throwing direction Diagram showing how to determine the initial velocity of the ball The figure which shows the determination method of the success lower limit twist amount Rmin according to the difficulty level The figure which shows the determination method of the success upper limit twist amount Rmax according to the difficulty level The figure which shows the determination method of azimuth angle (phi) of a pitching direction when difficulty is 5. The figure which shows the determination method of the azimuth | direction angle (phi) of a pitching direction when difficulty is 15. First example of difficulty update method based on success or failure of a shot Second example of difficulty update method based on success or failure of shoot Third example of difficulty update method based on success or failure of the shot The figure which shows the relationship between the distance between a player character and a ring, and difficulty offset

[Overall configuration of game system]
A game system 1 including a game device according to an embodiment of the present invention will be described with reference to FIG. FIG. 1 is an external view of the game system 1. Hereinafter, the game apparatus and the game program of the present embodiment will be described using a stationary game apparatus as an example. In FIG. 1, the game system 1 includes a television receiver (hereinafter simply referred to as “TV”) 2, a game device 3, an optical disk 4, an input device 8, and a marker unit 6. In the present system, game processing is executed by the game device 3 based on a game operation using the input device 8.

  An optical disk 4 that is an example of an information storage medium that can be used interchangeably with the game apparatus 3 is detachably inserted into the game apparatus 3. The optical disc 4 stores a game program to be executed on the game apparatus 3. An insertion slot for the optical disk 4 is provided on the front surface of the game apparatus 3. The game apparatus 3 executes a game process by reading and executing a game program stored in the optical disc 4 inserted into the insertion slot.

  A television 2 which is an example of a display device is connected to the game apparatus 3 via a connection cord. The television 2 displays a game image obtained as a result of the game process executed in the game device 3. In addition, a marker unit 6 is installed around the screen of the television 2 (upper side of the screen in FIG. 1). The marker unit 6 includes two markers 6R and 6L at both ends thereof. The marker 6R (same for the marker 6L) is specifically one or more infrared LEDs, and outputs infrared light toward the front of the television 2. The marker unit 6 is connected to the game apparatus 3, and the game apparatus 3 can control lighting of each infrared LED included in the marker unit 6.

  The input device 8 gives operation data indicating the content of the operation performed on the own device to the game device 3. In the present embodiment, the input device 8 includes a controller 5 and a gyro sensor unit 7. Although details will be described later, the input device 8 has a configuration in which a gyro sensor unit 7 is detachably connected to the controller 5. The controller 5 and the game apparatus 3 are connected by wireless communication. In the present embodiment, for example, Bluetooth (registered trademark) technology is used for wireless communication between the controller 5 and the game apparatus 3. In other embodiments, the controller 5 and the game apparatus 3 may be connected by wire.

[Internal configuration of game device 3]
Next, the internal configuration of the game apparatus 3 will be described with reference to FIG. FIG. 2 is a block diagram showing a configuration of the game apparatus 3. The game apparatus 3 includes a CPU 10, a system LSI 11, an external main memory 12, a ROM / RTC 13, a disk drive 14, an AV-IC 15 and the like.

  The CPU 10 executes a game process by executing a game program stored on the optical disc 4, and functions as a game processor. The CPU 10 is connected to the system LSI 11. In addition to the CPU 10, an external main memory 12, a ROM / RTC 13, a disk drive 14, and an AV-IC 15 are connected to the system LSI 11. The system LSI 11 performs processing such as control of data transfer between components connected thereto, generation of an image to be displayed, and acquisition of data from an external device. The internal configuration of the system LSI 11 will be described later. The volatile external main memory 12 stores a program such as a game program read from the optical disc 4 or a game program read from the flash memory 17, or stores various data. Used as a work area and buffer area. The ROM / RTC 13 includes a ROM (so-called boot ROM) in which a program for starting the game apparatus 3 is incorporated, and a clock circuit (RTC: Real Time Clock) that counts time. The disk drive 14 reads program data, texture data, and the like from the optical disk 4 and writes the read data to an internal main memory 11e or an external main memory 12 described later.

  Further, the system LSI 11 is provided with an input / output processor (I / O processor) 11a, a GPU (Graphics Processor Unit) 11b, a DSP (Digital Signal Processor) 11c, a VRAM 11d, and an internal main memory 11e. Although not shown, these components 11a to 11e are connected to each other by an internal bus.

  The GPU 11b forms part of a drawing unit and generates an image according to a graphics command (drawing command) from the CPU 10. The VRAM 11d stores data (data such as polygon data and texture data) necessary for the GPU 11b to execute the graphics command. When an image is generated, the GPU 11b creates image data using data stored in the VRAM 11d.

  The DSP 11c functions as an audio processor, and generates sound data using sound data and sound waveform (tone color) data stored in the internal main memory 11e and the external main memory 12.

  The image data and audio data generated as described above are read out by the AV-IC 15. The AV-IC 15 outputs the read image data to the television 2 via the AV connector 16, and outputs the read audio data to the speaker 2 a built in the television 2. As a result, an image is displayed on the television 2 and a sound is output from the speaker 2a.

  The input / output processor 11a performs transmission / reception of data to / from components connected to the input / output processor 11a and downloads data from an external device. The input / output processor 11 a is connected to the flash memory 17, the wireless communication module 18, the wireless controller module 19, the expansion connector 20, and the memory card connector 21. An antenna 22 is connected to the wireless communication module 18, and an antenna 23 is connected to the wireless controller module 19.

  The input / output processor 11a is connected to the network via the wireless communication module 18 and the antenna 22, and can communicate with other game devices and various servers connected to the network. The input / output processor 11a periodically accesses the flash memory 17 to detect the presence / absence of data that needs to be transmitted to the network. If there is such data, the input / output processor 11a communicates with the network via the wireless communication module 18 and the antenna 22. Send. The input / output processor 11a receives data transmitted from other game devices and data downloaded from the download server via the network, the antenna 22 and the wireless communication module 18, and receives the received data in the flash memory 17. Remember. By executing the game program, the CPU 10 reads out the data stored in the flash memory 17 and uses it in the game program. In the flash memory 17, in addition to data transmitted and received between the game apparatus 3 and other game apparatuses and various servers, save data (game result data or intermediate data) of a game played using the game apparatus 3 May be stored.

  Further, the input / output processor 11 a receives operation data transmitted from the controller 5 via the antenna 23 and the wireless controller module 19 and stores (temporarily stores) it in the buffer area of the internal main memory 11 e or the external main memory 12.

  Furthermore, an expansion connector 20 and a memory card connector 21 are connected to the input / output processor 11a. The expansion connector 20 is a connector for an interface such as USB or SCSI, and connects a medium such as an external storage medium, a peripheral device such as another controller, or a wired communication connector. By connecting, communication with the network can be performed instead of the wireless communication module 18. The memory card connector 21 is a connector for connecting an external storage medium such as a memory card. For example, the input / output processor 11a can access an external storage medium via the expansion connector 20 or the memory card connector 21 to store data in the external storage medium or read data from the external storage medium.

  The game apparatus 3 is provided with a power button 24, a reset button 25, and an eject button 26. The power button 24 and the reset button 25 are connected to the system LSI 11. When the power button 24 is turned on, power is supplied to each component of the game apparatus 3 via an AC adapter (not shown). When the reset button 25 is pressed, the system LSI 11 restarts the boot program for the game apparatus 3. The eject button 26 is connected to the disk drive 14. When the eject button 26 is pressed, the optical disk 4 is ejected from the disk drive 14.

[Configuration of Input Device 8]
Next, the input device 8 will be described with reference to FIGS. FIG. 3 is a perspective view showing an external configuration of the input device 8. FIG. 4 is a perspective view showing an external configuration of the controller 5. 3 is a perspective view of the controller 5 as seen from the upper rear side, and FIG. 4 is a perspective view of the controller 5 as seen from the lower front side.

  3 and 4, the controller 5 has a housing 31 formed by plastic molding, for example. The housing 31 has a substantially rectangular parallelepiped shape whose longitudinal direction is the front-rear direction (the Z-axis direction shown in FIG. 3), and is a size that can be gripped with one hand of an adult or a child as a whole. The player can perform a game operation by pressing a button provided on the controller 5 and moving the controller 5 itself to change its position and posture.

  The housing 31 is provided with a plurality of operation buttons. As shown in FIG. 3, a cross button 32a, a first button 32b, a second button 32c, an A button 32d, a minus button 32e, a home button 32f, a plus button 32g, and a power button 32h are provided on the upper surface of the housing 31. It is done. On the other hand, as shown in FIG. 4, a recess is formed on the lower surface of the housing 31, and a B button 32i is provided on the rear inclined surface of the recess. A function corresponding to the game program executed by the game apparatus 3 is appropriately assigned to each of the operation buttons 32a to 32i. The power button 32h is for remotely turning on / off the main body of the game apparatus 3. The home button 32 f and the power button 32 h are embedded in the upper surface of the housing 31. This can prevent the player from pressing the home button 32f or the power button 32h by mistake.

  A connector 33 is provided on the rear surface of the housing 31. The connector 33 is used to connect another device (for example, the gyro sensor unit 7 or another controller) to the controller 5. Further, locking holes 33a are provided on both sides of the connector 33 on the rear surface of the housing 31 in order to prevent the other devices from being easily detached.

  A plurality (four in FIG. 3) of LEDs 34 a to 34 d are provided behind the upper surface of the housing 31. Here, the controller type (number) is assigned to the controller 5 to distinguish it from other main controllers. The LEDs 34a to 34d are used for the purpose of notifying the player of the controller type currently set in the controller 5 and notifying the player of the remaining battery level of the controller 5. Specifically, when a game operation is performed using the controller 5, any one of the plurality of LEDs 34a to 34d is turned on according to the controller type.

  Further, the controller 5 has an imaging information calculation unit 35 (FIG. 7), and a light incident surface 35a of the imaging information calculation unit 35 is provided on the front surface of the housing 31 as shown in FIG. The light incident surface 35a is made of a material that transmits at least infrared light from the markers 6R and 6L.

  Between the first button 32b and the home button 32f on the upper surface of the housing 31, a sound release hole 31a for releasing sound from the speaker 49 (FIG. 5) built in the controller 5 is formed.

  Next, the internal structure of the controller 5 will be described with reference to FIGS. 5 and 6 are diagrams showing the internal structure of the controller 5. FIG. FIG. 5 is a perspective view showing a state in which the upper housing (a part of the housing 31) of the controller 5 is removed. FIG. 6 is a perspective view showing a state in which the lower casing (a part of the housing 31) of the controller 5 is removed. The perspective view shown in FIG. 6 is a perspective view of the substrate 30 shown in FIG.

  In FIG. 5, a substrate 30 is fixed inside the housing 31, and operation buttons 32 a to 32 h, LEDs 34 a to 34 d, an acceleration sensor 37, an antenna 45, and a speaker 49 are provided on the upper main surface of the substrate 30. Etc. are provided. These are connected to a microcomputer (microcomputer) 42 (see FIG. 6) by wiring (not shown) formed on the substrate 30 and the like. In the present embodiment, the acceleration sensor 37 is disposed at a position shifted from the center of the controller 5 with respect to the X-axis direction. This makes it easier to calculate the movement of the controller 5 when the controller 5 is rotated about the Z axis. The acceleration sensor 37 is disposed in front of the center of the controller 5 in the longitudinal direction (Z-axis direction). Further, the controller 5 functions as a wireless controller by the wireless module 44 (FIG. 7) and the antenna 45.

  On the other hand, in FIG. 6, an imaging information calculation unit 35 is provided at the front edge on the lower main surface of the substrate 30. The imaging information calculation unit 35 includes an infrared filter 38, a lens 39, an imaging element 40, and an image processing circuit 41 in order from the front of the controller 5. These members 38 to 41 are respectively attached to the lower main surface of the substrate 30.

  Further, the microcomputer 42 and the vibrator 48 are provided on the lower main surface of the substrate 30. The vibrator 48 is, for example, a vibration motor or a solenoid, and is connected to the microcomputer 42 by wiring formed on the substrate 30 or the like. The controller 48 is vibrated by the operation of the vibrator 48 according to the instruction of the microcomputer 42. As a result, a so-called vibration-compatible game in which the vibration is transmitted to the hand of the player holding the controller 5 can be realized. In the present embodiment, the vibrator 48 is disposed slightly forward of the housing 31. That is, by arranging the vibrator 48 on the end side of the center of the controller 5, the entire controller 5 can be vibrated greatly by the vibration of the vibrator 48. The connector 33 is attached to the rear edge on the lower main surface of the substrate 30. 5 and 6, the controller 5 includes a crystal resonator that generates a basic clock of the microcomputer 42, an amplifier that outputs an audio signal to the speaker 49, and the like.

  The gyro sensor unit 7 includes gyro sensors (gyro sensors 55 and 56 shown in FIG. 7) that detect angular velocities around three axes. The gyro sensor unit 7 is detachably attached to the connector 33 of the controller 5. A plug (plug 53 shown in FIG. 7) that can be connected to the connector 33 is provided at the front end of the gyro sensor unit 7 (end on the Z-axis positive direction side shown in FIG. 3). Further, hooks (not shown) are provided on both sides of the plug 53. In a state where the gyro sensor unit 7 is attached to the controller 5, the plug 53 is connected to the connector 33 and the hook is locked in the locking hole 33 a of the controller 5. Thereby, the controller 5 and the gyro sensor unit 7 are firmly fixed. The gyro sensor unit 7 has a button 51 on a side surface (surface in the X-axis direction shown in FIG. 3). The button 51 is configured such that when the button 51 is pressed, the hook is released from the locked state with respect to the locking hole 33a. Therefore, the gyro sensor unit 7 can be detached from the controller 5 by removing the plug 53 from the connector 33 while pressing the button 51.

  A connector having the same shape as the connector 33 is provided at the rear end of the gyro sensor unit 7. Therefore, other devices that can be attached to the controller 5 (connector 33 thereof) can also be attached to the connector of the gyro sensor unit 7. In FIG. 3, a cover 52 is detachably attached to the connector.

  The shapes of the controller 5 and the gyro sensor unit 7 shown in FIGS. 3 to 6, the shapes of the operation buttons, the number of acceleration sensors and vibrators, and the installation positions are merely examples, and other shapes, numbers, And the installation position. In the present embodiment, the imaging direction by the imaging unit is the positive Z-axis direction, but the imaging direction may be any direction. That is, the position of the imaging information calculation unit 35 in the controller 5 (the light incident surface 35a of the imaging information calculation unit 35) does not have to be the front surface of the housing 31, and other surfaces can be used as long as light can be taken in from the outside of the housing 31. May be provided.

  FIG. 7 is a block diagram showing the configuration of the input device 8 (the controller 5 and the gyro sensor unit 7). The controller 5 includes an operation unit 32 (operation buttons 32 a to 32 i), a connector 33, an imaging information calculation unit 35, a communication unit 36, and an acceleration sensor 37. The controller 5 transmits data indicating the details of the operation performed on the own device to the game apparatus 3 as operation data.

  The operation unit 32 includes the operation buttons 32a to 32i described above, and the operation button data indicating the input state (whether or not each operation button 32a to 32i is pressed) to each operation button 32a to 32i is transmitted to the microcomputer of the communication unit 36. Output to 42.

  The imaging information calculation unit 35 is a system for analyzing the image data captured by the imaging unit, discriminating a region having a high luminance in the image data, and calculating a center of gravity position, a size, and the like of the region. Since the imaging information calculation unit 35 has a sampling period of, for example, about 200 frames / second at the maximum, it can track and analyze even a relatively fast movement of the controller 5.

  The imaging information calculation unit 35 includes an infrared filter 38, a lens 39, an imaging element 40, and an image processing circuit 41. The infrared filter 38 passes only infrared rays from the light incident from the front of the controller 5. The lens 39 collects the infrared light transmitted through the infrared filter 38 and makes it incident on the image sensor 40. The image sensor 40 is a solid-state image sensor such as a CMOS sensor or a CCD sensor, for example, and receives the infrared light collected by the lens 39 and outputs an image signal. Here, the markers 6 </ b> R and 6 </ b> L of the marker unit 6 disposed in the vicinity of the display screen of the television 2 are configured by infrared LEDs that output infrared light toward the front of the television 2. Therefore, by providing the infrared filter 38, the image sensor 40 receives only the infrared light that has passed through the infrared filter 38 and generates image data, so that the images of the markers 6R and 6L can be captured more accurately. Hereinafter, an image captured by the image sensor 40 is referred to as a captured image. Image data generated by the image sensor 40 is processed by the image processing circuit 41. The image processing circuit 41 calculates the position of the imaging target (markers 6R and 6L) in the captured image. The image processing circuit 41 outputs coordinates indicating the calculated position to the microcomputer 42 of the communication unit 36. The coordinate data is transmitted to the game apparatus 3 as operation data by the microcomputer 42. Hereinafter, the coordinates are referred to as “marker coordinates”. Since the marker coordinates change corresponding to the direction (tilt angle) and position of the controller 5 itself, the game apparatus 3 can calculate the direction and position of the controller 5 using the marker coordinates.

  In other embodiments, the controller 5 may not include the image processing circuit 41, and the captured image itself may be transmitted from the controller 5 to the game apparatus 3. At this time, the game apparatus 3 may have a circuit or a program having the same function as the image processing circuit 41, and may calculate the marker coordinates.

  The acceleration sensor 37 detects the acceleration (including gravity acceleration) of the controller 5, that is, detects the force (including gravity) applied to the controller 5. The acceleration sensor 37 detects the value of the acceleration (linear acceleration) in the linear direction along the sensing axis direction among the accelerations applied to the detection unit of the acceleration sensor 37. For example, in the case of a multi-axis acceleration sensor having two or more axes, the component acceleration along each axis is detected as the acceleration applied to the detection unit of the acceleration sensor. For example, the triaxial or biaxial acceleration sensor may be of the type available from Analog Devices, Inc. or ST Microelectronics NV. The acceleration sensor 37 is, for example, a capacitance type acceleration sensor, but other types of acceleration sensors may be used.

  In the present embodiment, the acceleration sensor 37 has a vertical direction (Y-axis direction shown in FIG. 3), a horizontal direction (X-axis direction shown in FIG. 3), and a front-back direction (Z-axis direction shown in FIG. 3) with reference to the controller 5. ) Linear acceleration is detected in each of the three axis directions. Since the acceleration sensor 37 detects acceleration in the linear direction along each axis, the output from the acceleration sensor 37 represents the linear acceleration value of each of the three axes. That is, the detected acceleration is represented as a three-dimensional vector (ax, ay, az) in an XYZ coordinate system (controller coordinate system) set with reference to the input device 8 (controller 5). Hereinafter, a vector having the respective acceleration values related to the three axes detected by the acceleration sensor 37 as components is referred to as an acceleration vector.

  Data indicating the acceleration detected by the acceleration sensor 37 (acceleration data) is output to the communication unit 36. The acceleration detected by the acceleration sensor 37 changes in accordance with the direction (tilt angle) and movement of the controller 5 itself, so that the game apparatus 3 can calculate the direction and movement of the controller 5 using the acceleration data. it can. In the present embodiment, the game apparatus 3 determines the attitude of the input device 8 (controller 5) based on acceleration data and angular velocity data described later. The attitude of the input device 8 is represented by, for example, coordinate values in an xyz coordinate system with a predetermined position in a space where the input device 8 exists as a reference. Here, as shown in FIG. 1, the xyz coordinate system assumes that the input device 8 is located in front of the marker unit 6, and the direction from the position of the input device 8 toward the marker unit 6 is the positive z-axis direction. Suppose that the coordinate system is such that the vertically upward direction (reverse direction of the gravity direction) is the y-axis positive direction and the left direction when the marker unit 6 is viewed from the position of the input device 8 is the x-axis positive direction. Further, here, the attitude of the input device 8 when the X axis, Y axis, and Z axis with respect to the input device 8 (controller 5) are the same as the directions of the x axis, y axis, and z axis, respectively, is the reference posture. I will call it. The posture of the input device 8 is that when the input device 8 is rotated in the roll direction (around the Z axis), the pitch direction (around the X axis), and the yaw direction (around the Y axis) from the reference posture with the Z axis direction as a reference. It is an attitude in the xyz coordinate system. The posture is expressed by a rotation matrix M described later.

  Data (acceleration data) indicating the acceleration (acceleration vector) detected by the acceleration sensor 37 is output to the communication unit 36.

  In addition, based on the acceleration signal output from the acceleration sensor 37, a computer such as a processor (for example, the CPU 10) of the game apparatus 3 or a processor (for example, the microcomputer 42) of the controller 5 performs processing, whereby further information regarding the controller 5 is obtained. Those skilled in the art will be able to easily understand from the description of the present specification that can be estimated or calculated (determined). For example, when processing on the computer side is executed on the assumption that the controller 5 on which the acceleration sensor 37 is mounted is stationary (that is, the processing is executed assuming that the acceleration detected by the acceleration sensor is only gravitational acceleration). When the controller 5 is actually stationary, it can be determined whether or not the attitude of the controller 5 is inclined with respect to the direction of gravity based on the detected acceleration. Specifically, whether or not the controller 5 is inclined with respect to the reference depending on whether or not 1G (gravity acceleration) is applied, based on the state in which the detection axis of the acceleration sensor 37 is directed vertically downward. It is possible to know how much it is inclined with respect to the reference according to its size. Further, in the case of the multi-axis acceleration sensor 37, it is possible to know in detail how much the controller 5 is inclined with respect to the direction of gravity by further processing the acceleration signal of each axis. . In this case, the processor may calculate the tilt angle of the controller 5 based on the output from the acceleration sensor 37, or may calculate the tilt direction of the controller 5 without calculating the tilt angle. Good. Thus, by using the acceleration sensor 37 in combination with the processor, the tilt angle or posture of the controller 5 can be determined.

  On the other hand, when it is assumed that the controller 5 is in a dynamic state (a state in which the controller 5 is moved), the acceleration sensor 37 detects an acceleration corresponding to the movement of the controller 5 in addition to the gravitational acceleration. Therefore, the movement direction of the controller 5 can be known by removing the gravitational acceleration component from the detected acceleration by a predetermined process. Even if it is assumed that the controller 5 is in a dynamic state, the direction of gravity is obtained by removing the acceleration component corresponding to the movement of the acceleration sensor from the detected acceleration by a predetermined process. It is possible to know the inclination of the controller 5 with respect to. In another embodiment, the acceleration sensor 37 is a built-in process for performing a predetermined process on the acceleration signal before outputting the acceleration signal detected by the built-in acceleration detection means to the microcomputer 42. An apparatus or other type of dedicated processing apparatus may be provided. A built-in or dedicated processing device converts the acceleration signal into a tilt angle (or other preferred parameter) if, for example, the acceleration sensor 37 is used to detect static acceleration (eg, gravitational acceleration). It may be a thing.

  The communication unit 36 includes a microcomputer 42, a memory 43, a wireless module 44, and an antenna 45. The microcomputer 42 controls the wireless module 44 that wirelessly transmits data acquired by the microcomputer 42 to the game apparatus 3 while using the memory 43 as a storage area when performing processing. The microcomputer 42 is connected to the connector 33. Data transmitted from the gyro sensor unit 7 is input to the microcomputer 42 via the connector 33. Hereinafter, the configuration of the gyro sensor unit 7 will be described.

  The gyro sensor unit 7 includes a plug 53, a microcomputer 54, a 2-axis gyro sensor 55, and a 1-axis gyro sensor 56. As described above, the gyro sensor unit 7 detects angular velocities around the three axes (in this embodiment, the XYZ axes), and transmits data (angular velocity data) indicating the detected angular velocities to the controller 5.

  The biaxial gyro sensor 55 detects an angular velocity around the X axis and an angular velocity (per unit time) around the Y axis. The single axis gyro sensor 56 detects an angular velocity (per unit time) around the Z axis. In this specification, the rotation directions around the Z axis, around the X axis, and around the Y axis are referred to as the roll direction, the pitch direction, and the yaw direction, respectively, based on the imaging direction (Z axis positive direction) of the controller 5. . That is, the biaxial gyro sensor 55 detects angular velocities in the pitch direction (rotation direction around the X axis) and the yaw direction (rotation direction around the Y axis), and the single axis gyro sensor 56 detects the roll direction (around the Z axis). Detect the angular velocity in the rotation direction.

  In this embodiment, the 2-axis gyro sensor 55 and the 1-axis gyro sensor 56 are used to detect the angular velocity around the three axes. However, in other embodiments, the angular velocity around the three axes is Any number and combination of gyro sensors may be used as long as they can be detected.

  In this embodiment, the three axes for detecting the angular velocities by the gyro sensors 55 and 56 are set so as to coincide with the three axes (XYZ axes) for detecting the acceleration by the acceleration sensor 37. However, in other embodiments, the three axes for detecting the angular velocity by the gyro sensors 55 and 56 and the three axes for detecting the acceleration by the acceleration sensor 37 do not have to coincide with each other.

  Data indicating the angular velocity detected by the gyro sensors 55 and 56 is output to the microcomputer 54. Accordingly, the microcomputer 54 receives data indicating the angular velocity around the three axes of the XYZ axes. The microcomputer 54 transmits data indicating the angular velocities around the three axes as angular velocity data to the controller 5 via the plug 53. Although transmission from the microcomputer 54 to the controller 5 is sequentially performed every predetermined cycle, since the game processing is generally performed in units of 1/60 seconds (one frame time), this time Transmission is preferably performed in the following cycle.

  Returning to the description of the controller 5, the data output from the operation unit 32, the imaging information calculation unit 35 and the acceleration sensor 37 to the microcomputer 42, and the data transmitted from the gyro sensor unit 7 to the microcomputer 42 are temporarily stored. Stored in the memory 43. These data are transmitted to the game apparatus 3 as the operation data. That is, the microcomputer 42 outputs the operation data stored in the memory 43 to the wireless module 44 when the transmission timing to the wireless controller module 19 of the game apparatus 3 arrives. The wireless module 44 modulates a carrier wave of a predetermined frequency with operation data using, for example, Bluetooth (registered trademark) technology, and radiates a weak radio signal from the antenna 45. That is, the operation data is modulated by the wireless module 44 into a weak radio signal and transmitted from the controller 5. The weak radio signal is received by the wireless controller module 19 on the game apparatus 3 side. By demodulating and decoding the received weak radio signal, the game apparatus 3 can acquire operation data. And CPU10 of the game device 3 performs a game process based on the acquired operation data and a game program. Note that the wireless transmission from the communication unit 36 to the wireless controller module 19 is sequentially performed at predetermined intervals, but the game processing is generally performed in units of 1/60 seconds (one frame time). Therefore, it is preferable to perform transmission at a period equal to or shorter than this time. The communication unit 36 of the controller 5 outputs each operation data to the wireless controller module 19 of the game apparatus 3 at a rate of once every 1/200 seconds, for example.

  By using the controller 5, the player can perform an operation of tilting the controller 5 to an arbitrary tilt angle in addition to the conventional general game operation of pressing each operation button. In addition, according to the controller 5, the player can also perform an operation of instructing an arbitrary position on the screen by the controller 5 and an operation of moving the controller 5 itself.

[Overview of game processing]
Next, an outline of a basketball game executed in the game system 1 will be described with reference to FIGS. In the basketball game executed in the present embodiment, a player character existing in the virtual game space repeats a basketball shoot a predetermined number of times according to an operation by the player, and a score is given to the player according to the success or failure of the shoot. The player can cause the player character to shoot the ball by performing a swing operation as shown in FIG.

  FIG. 9 shows an example of a game image displayed on the screen of the television 2 immediately after the game is started. The game image shows a scene when the virtual game space is viewed from a predetermined viewpoint (virtual camera), and a player character, a ball, a ring, and the like arranged in the virtual game space are displayed on the game image. . The game image also displays the score of the player.

  When the game image as shown in FIG. 9 is displayed on the television 2, the controller in a state where the player faces the input device 8 downward (that is, the front end of the controller 5 is lower than the rear end of the controller 5). When the 5 B button 32i is pressed, the player character grasps the ball as shown in FIG. Thereafter, when the player performs a jump operation (that is, when the input device 8 is swung up), the player character jumps straight up with the ball held on the head as shown in FIG.

  After the player character jumps, when the player performs a shooting operation (that is, when the input device 8 is swung forward as shown in FIG. 8), the player character throws the ball toward the ring as shown in FIG. The throwing direction and initial velocity of the ball at this time depend on how the player swings the input device 8 (that is, the strength at which the input device 8 is swung, the timing at which the input device 8 is swung, and the input device 8 when the input device 8 is swung. It changes in accordance with the posture and twist of the player's wrist when the input device 8 is shaken. The moving direction, moving speed, and reaching distance of the ball so that the pitched ball passes through the center of the ring are the target moving direction, target moving speed, and target reaching distance of the ball, respectively. If the input device 8 is shaken in an ideal manner of swinging or close to it, the shoot is successful and points are scored, otherwise the shoot fails and no points are added.

  After the shooting is finished, when the player presses the B button 32i of the controller 5 with the front end of the input device 8 facing downward again, the player character grasps a new ball. In the same manner as described above, the player character shoots again according to the operation of the player. In this way, the player character shoots five times from the same position in the virtual game space in accordance with the player's operation. When the five shots are finished, the player character moves and shoots five times from another position. In this way, the player character takes five shots as one set, and moves each time each set ends. When five sets (that is, 25 shots) are completed, the result of the game (the player has acquired) Total score) is displayed and the game ends.

  As described above, in this embodiment, the player does not need to operate the buttons on the controller 5 when performing a jump operation and a shoot operation, and it is as if he / she shoots an arm holding the input device 8. Since the player character can jump and shoot by swinging in this manner, a very intuitive game operation is possible. Further, since the operation of the button on the controller 5 is not particularly required during the shooting operation, the player can swing the input device 8 while firmly holding it with the five fingers.

[Details of game processing]
Next, details of the game process executed in the game apparatus 3 will be described. First, main data used in the game process in the game apparatus 3 will be described with reference to FIG. FIG. 14 is a memory map of the external main memory 12 (which may be the internal main memory 11e) of the game apparatus 3. As shown in FIG. 14, the external main memory 12 includes a game program storage area 61, an operation data storage area 62, an attitude data storage area 63, a difficulty level storage area 64, a swing strength storage area 65, a twist amount storage area 66, And used as a score storage area 67.

  The game program storage area 61 stores a game program for realizing the basketball game as described above. A part or all of the game program is read from the optical disc 4 at an appropriate timing after the game apparatus 3 is turned on and stored in the game program storage area 61 of the external main memory 12. In another embodiment, the game program is supplied to the game apparatus 3 through an arbitrary computer-readable storage medium (for example, a game cartridge or a magnetic disk) other than the optical disk, and is stored in the external main memory 12. Also good. In still another embodiment, the game program may be read from a non-volatile storage device (for example, the flash memory 17) built in the game apparatus 3 and stored in the external main memory 12. In still another embodiment, the game program may be supplied from another computer system (game device or game program distribution server device) to the game device 3 through a wireless or wired communication line and stored in the external main memory 12. Good.

  In the operation data storage area 62, operation data transmitted from the controller 5 to the game apparatus 3 is stored. As described above, since the operation data is transmitted from the controller 5 to the game apparatus 3 at a cycle of 1/200 second, the operation data stored in the operation data storage area 62 is stored at a cycle of 1/200 second. Updated. Here, in the present embodiment, each time of operation data transmitted at a cycle of 1/200 second is taken as one sample, and the latest operation data (that is, the game device 3 is finally acquired by the external main memory 12). In addition, a predetermined number of operation data acquired in the past is stored.

  The operation data includes button data, angular velocity data, acceleration data, and marker coordinate data. The button data is data indicating whether or not each button on the controller 5 has been pressed. The angular velocity data is a collection of data indicating the angular velocity detected by the gyro sensors 55 and 56 of the gyro sensor unit 7. That is, the angular velocity data is an angular velocity around each axis in the XYZ coordinate system shown in FIG. 3, and is a set of angular velocities around each axis detected at present and in the past. The acceleration data is a set of data indicating the acceleration (acceleration vector) detected by the acceleration sensor 37 at present and in the past. The marker coordinate data is coordinates indicating the coordinates calculated by the image processing circuit 41 of the imaging information calculation unit 35, that is, the marker coordinates. The marker coordinates are expressed in a two-dimensional coordinate system for representing a position on a plane corresponding to the captured image.

  Posture data is stored in the posture data storage area 63. The attitude data is a set of data related to the attitude of the input device 8 (controller 5), and includes rotation matrix data, roll component rotation data, pitch component rotation data, yaw component rotation data, pitch attitude data, and yaw attitude data. .

  The rotation matrix data is data representing the rotation from the reference posture (the posture in the case where the XYZ axis described above matches the xyz axis) to the current posture of the input device 8 (controller 5). It is represented by In addition, the rotation matrix M is also obtained by arranging the respective unit vectors indicating the XYZ axis directions of the input device 8 in the xyz coordinate system. Like the operation data, the rotation matrix data is a set of data indicating the rotation matrix M of a predetermined sample in addition to the latest rotation matrix M. The rotation matrix M is represented by a 3 × 3 matrix shown in the following formula (1).

  The roll component rotation data is data representing the rotation of the input device 8 around the Z axis, and is represented by a roll component rotation matrix Mr. The pitch component rotation data is data representing the rotation of the input device 8 around the X axis, and is represented by a pitch component rotation matrix Mp. Further, the yaw component rotation data is data representing the rotation of the input device 8 around the Y axis, and is represented by a yaw component rotation matrix My. The roll component rotation matrix Mr, the pitch component rotation matrix Mp, and the yaw component rotation matrix My are each represented by a 3 × 3 matrix shown in the following equations (2) to (4).

  Here, the rotation angles in the roll direction (around the Z axis), the pitch direction (around the X axis), and the yaw direction (around the Y axis) were θr, θp, and θy, respectively. The angles θr, θp, and θy are obtained based on the angular velocity data. That is, the angle θr is a rotation angle around the Z axis from the reference posture, and the rotation angle is obtained by calculating the integral of the angular velocity around the Z axis as described above. Similarly, the angles θp and θy are obtained by calculating the integrals of the angular velocities around the X axis and the Y axis, respectively. Since the output of the gyro sensor may generally include an error due to drift or the like, it is possible not only to integrate the angular velocity but also to correct the posture based on the acceleration data. Specifically, when the input device 8 is stationary or moving at a constant speed, the acceleration indicated by the acceleration data is gravity, so the orientation of the input device 8 is calculated from the direction, and the angular velocity is calculated. Correction is performed so that the posture calculated by (1) approaches the posture calculated from the acceleration. At that time, if the degree of correction is made higher as the magnitude of acceleration is closer to the magnitude of gravity, the attitude when the attitude cannot be calculated from the acceleration, such as when moving, will not be reflected much. it can. Further, correction can be performed based on the marker coordinate data. That is, the orientation of the input device in the roll direction can be calculated from the direction connecting the two marker coordinates, and the marker coordinate position can be associated with the orientation in the yaw and / or pitch direction. It is possible to perform correction by bringing the posture calculated by the angular velocity and the posture corrected by the acceleration closer to the posture calculated based on the marker coordinates at a predetermined ratio.

  The rotation matrix M is a product of rotation matrices representing rotations in the roll direction, pitch direction, and yaw direction with respect to the Z axis. That is, the rotation matrix M is a product of the rotation matrices of the respective components represented by the above formulas (2) to (4). In the present embodiment, it is assumed that a rotation matrix M (rotation matrix data) is calculated and stored in the external main memory 12 at a timing at which the angular velocity data is updated (cycle of 1/200 second).

  The pitch attitude data is a set of data indicating the attitude in the pitch direction in the xyz coordinate system of the input device 8, and the attitude in the pitch direction is obtained from the rotation matrix M. Here, the attitude in the pitch direction in the xyz coordinate system is the rotation around the x axis as viewed from the space fixed coordinate system (xyz coordinate system) after the input device 8 is rotated in the object coordinate system (XYZ coordinate system). It is a posture to represent.

  The yaw posture data is a set of data indicating the posture in the yaw direction in the xyz coordinate system of the input device 8, and the posture in the yaw direction is obtained from the rotation matrix M. Here, the orientation in the yaw direction in the xyz coordinate system refers to the rotation around the y axis as viewed from the space fixed coordinate system (xyz coordinate system) after the input device 8 is rotated in the object coordinate system (XYZ coordinate system). It is a posture to represent.

  The difficulty level storage area 64 stores a value indicating the difficulty level of the game. In the present embodiment, it is assumed that the difficulty value can take a real value in the range of 0 to 25.

  In the swing strength storage area 65, the latest swing strength P0, the swing strength P1 one sample before, and the swing strength P2 two samples before are stored. The latest swing strength P0 is the swing strength P calculated based on the latest angular velocity data. The swing strength P1 of one sample before is the swing strength P calculated based on the angular velocity data of one sample before (that is, the angular velocity data acquired immediately before the latest angular velocity data). Similarly, the swing strength P2 two samples before is the swing strength P calculated based on the angular velocity data two samples before (that is, the angular velocity data acquired two times before the latest angular velocity data). . A method for calculating the swing strength P will be described later.

  In the twist amount storage area 66, a twist amount R1 for the first throw, a twist amount R2 for the third throw, a twist amount R3 for the third throw, and a twist amount R4 for the fourth throw are stored. The twist amount R1 of the first throw is the twist amount R calculated based on the angular velocity data when the first shot is shot out of all 25 shots emitted by the player character in the basketball game. The second-throw twist amount R2 is a twist amount R calculated based on the angular velocity data when the second-throw shot is shot out of all 25 shots released by the player character in the basketball game. Similarly, the twist amount R3 of the third throw is the twist amount R calculated based on the angular velocity data when the third shot is shot, and the twist amount R4 of the fourth throw is the shot of the fourth throw. This is the twist amount R calculated based on the angular velocity data when hit. A method of calculating the twist amount R will be described later.

  In the score storage area 67, a value indicating the score acquired by the player is stored.

  In addition to the game program and various data as described above, the external main memory 12 includes image data of various objects appearing in the game (player character, ball, etc.), data indicating various parameters of the object, etc. Data necessary for game processing is stored.

  The game program and various data as described above may be stored not in the external main memory 12 but in the internal main memory 11e.

  In addition, it is not necessary that all the various data as described above is stored in the external main memory 12, and at least data necessary for the game process may be stored in the external main memory 12. For example, when the yaw attitude data is not used in the game process, the yaw attitude data may not be stored in the external main memory 12.

  Next, a flow of game processing executed by the CPU 10 of the game apparatus 3 based on the above-described game program will be described with reference to flowcharts of FIGS.

  When the power of the game apparatus 3 is turned on, the CPU 10 of the game apparatus 3 executes a startup program stored in a boot ROM (not shown), whereby each unit such as the external main memory 12 is initialized. Then, the game program stored in the optical disc 4 is read into the external main memory 12, and the CPU 10 starts executing the game program 61. The flowchart shown in FIG. 15 is a flowchart showing a process performed after the above process is completed. In the flowcharts of FIGS. 15 and 16, for the sake of simplicity, the operation data is periodically acquired from the controller 5 and stored in the external main memory 12 or input based on the acquired operation data. A process of calculating a rotation matrix representing the attitude of the apparatus 8 and storing it in the external main memory 12 is omitted. In the flowcharts of FIGS. 15 and 16, the player character motion control process and the game image generation process, which are techniques well known to those skilled in the art, are also omitted.

  In step S10, the CPU 10 performs an initialization process. This initialization process includes a process of setting various data stored in the external main memory 12 to initial values. For example, the difficulty level is set to an initial value “1”, and the score is set to an initial value “0”.

  In step S <b> 11, the CPU 10 determines whether or not the attitude of the controller 5 is downward (that is, the front end of the controller 5 is lower than the rear end of the controller 5). This determination is made, for example, when the Zy component of the rotation matrix M is negative, because the Z axis of the controller 5 is directed downward in the xyz space, and thus the attitude of the controller 5 is determined to be downward. be able to. It can also be performed based on pitch attitude data stored in the external main memory 12. If it is determined in step S11 that the orientation of the controller 5 is downward, the process proceeds to step S12. If not, step S11 is repeated until it is determined that the orientation of the controller 5 is downward. .

  In step S <b> 12, the CPU 10 determines whether or not the B button 32 i of the controller 5 has been pressed by the player based on the button data in the operation data storage area 62. If it is determined that the B button 32i has been pressed, the process proceeds to step S13. If not, the process returns to step S11.

  In step S13, the CPU 10 controls the motion of the player character so that the player character grabs the ball in the virtual game space.

  In step S14, the CPU 10 determines whether or not a jump operation has been performed by the player. In the present embodiment, whether or not the player has swung the input device 8 up is determined based on the current acceleration in the Z-axis direction, the current angular velocity around the X-axis, the current angular velocity around the Y-axis, and the current input device 8. When the player determines that the player has swung the input device 8 above the head, it is determined that a jump operation has been performed. If it is determined that the jump operation has been performed, the process proceeds to step S15. If not, step S14 is repeated until it is determined that the jump start condition is satisfied.

  In step S15, the CPU 10 controls the motion of the player character so that the player character starts jumping in the virtual game space.

  In step S16, the CPU 10 performs a shoot process. This shooting process is a process for causing the player character to shoot a ball. Details of the chute process will be described later with reference to the flowchart of FIG. When the shooting process in step S16 ends, the process proceeds to step S17.

  In step S <b> 17, the CPU 10 determines whether or not the specified number of shots (25 times in the present embodiment) has been shot. If the prescribed number of shots have been completed, the process proceeds to step S18. If not, the process returns to step S11.

  In step S18, the CPU 10 generates a result image indicating the score obtained by the player, displays it on the screen of the television 2, and ends the game process.

  Next, the chute process in step S16 in FIG. 15 will be described in detail with reference to the flowchart in FIG.

  When the chute process is started, in step S20, the CPU 10 calculates the swing strength P based on the latest angular velocity data, and stores the value as “latest swing strength P0” in the external main memory 12. At this time, the value stored in the external main memory 12 as “the latest swing strength P0” until immediately before step S20 is stored in the external main memory 12 as “the swing strength P1 before one sample”, and the same. The value stored in the external main memory 12 as “the swing strength P1 before one sample” until immediately before step S20 is stored in the external main memory 12 as “the swing strength P2 before two samples”. .

  The swing strength P is an index indicating the strength with which the player swings the input device 8. In the present embodiment, for example, the swing strength P is calculated based on the angular velocity around the X axis and the angular velocity around the Y axis. Specifically, if the angular velocity around the X axis is Rx and the angular velocity around the Y axis is Ry, the swing strength P is calculated as √ (Rx ^ 2 + Ry ^ 2). The swing strength P calculated in this way represents the magnitude of the angular velocity around the X axis and / or around the Y axis when the input device 8 is rotated. When the player swings the arm holding the input device 8 from the position A shown in FIG. 17 to the position D through the position B and the position C as in the case of a shooting action in basketball, in the process, the swing strength P The value of changes as shown by the curve in FIG. In the example of FIG. 18, the swing strength P is maximized when the player's arm is at the position B, but the maximum point of the swing strength P varies depending on how the player swings the input device 8. . In FIG. 17, the player holds the input device 8 in such a way that the input device 8 rotates around the X axis when the input device 8 is shaken, but in the present embodiment, as described above. Since the swing strength P is calculated by taking into account both the angular velocity around the X axis and the angular velocity around the Y axis, the player can input the input device 8 no matter what way the player holds the input device 8. The strength of shaking 8 can be appropriately detected as the swing strength P.

  In step S21, the CPU 10 determines whether or not the maximum value of the swing strength P is equal to or greater than the pitching threshold value. In the present embodiment, whether or not the swing strength P has reached the maximum point is determined based on the “latest swing strength P0”, “the swing strength P1 one sample before” stored in the external main memory 12 and “ Judgment is made based on the swing strength P2 before two samples. Specifically, the value of “swing strength P1 before one sample” is larger than the value of “swing strength P2 before two samples” and the value of “latest swing strength P0” is “one sample before” When the swing strength P is equal to or less than the value of the swing strength P1, the swing strength P is determined to have reached the maximum point, and the value of “the swing strength P1 one sample before” is obtained as the maximum value (however, If it is not necessary to determine the maximum value strictly, the value of “latest swing strength P0” at that time may be treated as the maximum value). For example, when the swing strength P changes as shown in FIG. 19, the size of the point P <b> 1 in FIG. 19 is obtained as the maximum value of the swing strength P. Note that it is not possible to accurately determine whether or not the player has performed a shooting operation only by determining whether or not the swing strength P has reached the maximum point. This is because the swing strength P always varies slightly even when the player is not shaking the input device 8, and even in such a case, the maximum point can be obtained with a small value. Therefore, in the present embodiment, when the maximum value of the swing strength P is equal to or greater than a predetermined pitching threshold (see FIG. 18), it is determined that a shooting operation has been performed by the player. Note that if the maximum value of the swing strength P is “greater than” a predetermined pitch threshold value, even if it is determined that a shooting operation has been performed by the player, substantially the same determination can be made. If it is determined in step S21 that the maximum value of the swing strength P is equal to or greater than the pitching threshold, the process proceeds to step S22, and if not, the process returns to step S20. In the following description, when the swing strength P is equal to or greater than the throwing threshold value and becomes a maximum (however, the “time point” here refers to the “moment” at which the swing strength P is maximum). Is not simply referred to as “when throwing”.

  In step S22, the CPU 10 determines the elevation angle θ in the pitching direction of the ball in the virtual game space based on the posture of the controller 5 at the time of pitching. As shown in FIG. 20, the throwing direction of the ball in the virtual game space is the direction in which the ball is ejected when the player character shoots the ball. An elevation angle θ in the pitch direction represents an angle formed by the pitch direction and a horizontal plane in the virtual game space.

  In the present embodiment, the elevation angle θ in the pitch direction is determined based on the pitch direction posture of the controller 5 at the time of pitch. The attitude of the controller 5 in the pitch direction is represented by pitch attitude data stored in the external main memory 12. For example, as shown in FIG. 21, the CPU 10 determines the elevation angle θ using a function or table that defines the correspondence between the pitch direction posture of the controller 5 and the pitch direction elevation angle θ. In the example of FIG. 21, the correspondence relationship between the posture of the controller 5 in the pitch direction and the elevation angle θ is shown by a straight line (that is, a linear function), but may be an arbitrary curve. The same applies to other drawings described later (that is, FIGS. 22 to 26 and FIG. 30). In this embodiment, for example, when the player swings his arm as shown in FIG. 17, the earlier the timing at which the swing strength P reaches the maximum point, the greater the elevation angle θ, and the swing strength P reaches the maximum point. The later the timing, the smaller the elevation angle θ. If the elevation angle θ is too large or too small, the ball does not reach the ring in the virtual game space. Specifically, when the elevation angle θ is smaller than the success lower limit elevation angle θ1 shown in FIG. 21 or larger than the success upper limit elevation angle θ2, the ball cannot reach the ring. Therefore, in order to make the shot successful, the posture in the pitch direction of the controller 5 at the time of pitching needs to be within the success range shown in FIG. That is, in order to make the shot successful, the player needs to make the swing strength P reach the maximum point while the posture in the pitch direction of the controller 5 at the time of pitching is within the success range shown in FIG. .

  In step S23, the CPU 10 calculates the success lower limit initial speed V1 and the success upper limit initial speed V2 based on the elevation angle θ determined in step S22. The success lower limit initial speed V1 is assumed to be that the player character has thrown the ball toward the ring in the direction of the elevation angle θ determined in step S22 (note that the left and right directions have been thrown straight toward the ring. ) Is the lower limit value of the initial velocity V of the ball for a successful shot. In other words, if the initial velocity V of the ball is below the lower limit of success initial velocity V1, the ball does not reach the ring and the shot fails. Further, the success upper limit initial speed V2 is the upper limit value of the initial speed V of the ball for a successful shot when the player character throws the ball toward the ring in the direction of the elevation angle θ determined in step S22. It is. In other words, when the initial velocity V of the ball exceeds the success upper limit initial velocity V2, the ball goes over the ring and the shot fails.

  In step S24, the CPU 10 determines the initial velocity V of the ball based on the maximum value of the swing strength P (that is, the swing strength P at the time of pitching). For example, as shown in FIG. 22, the CPU 10 determines the initial speed V using a function or table that defines the correspondence between the maximum value of the swing strength P and the initial speed V of the ball. In this embodiment, as shown in FIG. 22, a certain success range is defined for the maximum value of the swing strength P, and the maximum value of the swing strength P is set to the lower limit (success lower limit maximum value) of the success range. When the values match, the initial velocity V of the ball becomes the same value as the lower limit initial velocity V1, and when the maximum value of the swing strength P matches the upper limit of the success range (success upper limit maximum value) The initial speed V is the same value as the success upper limit initial speed V2. When the maximum value of the swing strength P is less than the lower limit of success, the initial velocity V of the ball is smaller than the lower limit of initial velocity V1, the ball does not reach the ring, and the shot fails. Similarly, when the maximum value of the swing strength P exceeds the upper limit of the success range, the initial velocity V of the ball becomes higher than the upper limit of success initial velocity V2, the ball crosses the ring, and the shot fails. When the maximum value of the swing strength P is within a predetermined success range, the initial velocity V of the ball is determined to be a value within the range from the success lower limit initial velocity V1 to the success upper limit initial velocity V2. Is done.

  In step S25, the CPU 10 calculates the twist amount R based on the angular velocity around the Z axis at the time of pitching. In the present embodiment, the CPU 10 calculates an average value of angular velocities around the Z axis for the most recent samples as the twist amount R from the angular velocity data stored in the external main memory 12. In other embodiments, the latest angular velocity around the Z axis may be used as the twist amount R.

  In step S26, the CPU 10 determines whether or not the current shoot is the fifth and subsequent throws after the basketball game is started. If the current shoot is the fifth and subsequent shots, the process proceeds to step S27, and so on. If not (that is, if the current shot is one of the first to fourth shots), the process proceeds to step S28.

  In step S27, the CPU 10 determines the current twist amount R (that is, the immediately preceding step) based on the “first throw twist amount R1” to “fourth throw twist amount R4” stored in the external main memory 12. The twist amount R) calculated in S25 is corrected. A method of correcting the twist amount R in step S27 will be described later.

  In step S28, the CPU 10 determines the value of the current twist amount R (that is, the twist amount R calculated in the previous step S25) from "the first throw twist amount R1" to "the fourth throw twist amount R4". One of them is stored in the external main memory 12. For example, when the current shot is the first throw, the current twist amount R is stored as “first throw twist amount R1”. Similarly, when the current shot is the second throw, the current twist amount R is stored as “the second throw twist amount R1”.

  In step S <b> 29, the CPU 10 determines the success lower limit twist amount Rmin and the success upper limit twist amount Rmax based on the value of the “difficulty” stored in the external main memory 12. The success lower limit twist amount Rmin and the success upper limit twist amount Rmax are variables respectively indicating the lower limit and the upper limit of the success range of the twist amount R for successfully shooting, and these values are variable according to the difficulty level. In the present embodiment, the success lower limit twist amount Rmin is a negative value, and the success upper limit twist amount Rmax is a positive value. For example, as illustrated in FIG. 23, the CPU 10 determines the success lower limit twist amount Rmin by using a function or a table that defines a correspondence relationship between the difficulty level and the success lower limit twist amount Rmin. Further, for example, as shown in FIG. 24, the CPU 10 determines the success upper limit twist amount Rmax by using a function or a table that defines a correspondence relationship between the difficulty level and the success upper limit twist amount Rmax. As a result, in this embodiment, the higher the difficulty level, the narrower the success range of the twist amount R.

  In step S30, the CPU 10 is based on the twist amount R corrected in step S27 (however, if the current shot is the first to fourth shots, the twist amount R calculated in step S25). Thus, the azimuth angle φ in the pitching direction of the ball in the virtual game space is determined. As shown in FIG. 20, the azimuth angle φ of the pitch direction is calculated by using the front vector and the pitch direction projected on the horizontal plane when the horizontal vector representing the ring direction viewed from the player character in the virtual game space is a front vector. Represents the angle formed by.

  For example, as shown in FIG. 25, the CPU 10 determines the azimuth angle φ using a function or table that defines the correspondence between the twist amount R and the azimuth angle φ in the pitching direction. In the present embodiment, the target value of the twist amount R is “0”, and the azimuth angle φ is “0” when the twist amount R is “0”. That is, if the controller 5 does not rotate around the Z-axis at the time of pitching, the ball is released straight toward the center of the ring without shifting from the center of the ring in the left-right direction. On the other hand, if the controller 5 is rotating around the Z axis at the time of pitching, the absolute value of the azimuth angle φ increases according to the angular velocity, and the ball is released in a direction shifted in the left-right direction from the center of the ring. If the azimuth angle φ is too large or too small, the ball trajectory deviates from the ring in the virtual game space. Specifically, when the azimuth angle φ is smaller than the lower limit azimuth angle φ1 shown in FIG. 25, the trajectory of the ball deviates to the left side of the ring, and the azimuth angle φ is higher than the upper limit azimuth angle φ2 shown in FIG. If it is larger, the ball trajectory is off to the right of the ring. Therefore, in order to make the shot successful, the twist amount R needs to be within the success range (that is, the target range) shown in FIG.

  Note that the lower limit (that is, the lower limit twist amount Rmin) and the upper limit (that is, the upper limit twist amount Rmax) of the success amount of the twist amount R are determined based on the difficulty level in step S29. Therefore, the success range of the twist amount R changes according to the current difficulty level. FIG. 25 shows the relationship between the twist amount R and the azimuth angle φ when the difficulty level is “5”, and FIG. 26 shows the relationship between the twist amount R and the azimuth angle φ when the difficulty level is “20”. Showing the relationship. As apparent from FIGS. 25 and 26, the higher the difficulty level, the narrower the success range of the twist amount R. In other words, the higher the difficulty level, the more accurate the shooting operation is required from the player for successful shooting. On the other hand, the lower the difficulty level, the wider the success range of the twist amount R. Therefore, even if the shooting operation is performed with the same form, the lower the difficulty level, the more the ball trajectory approaches the center of the ring. The azimuth angle φ is corrected.

  In step S31, the CPU 10 controls the motion of the player character so that the player character shoots in the virtual game space. Then, the CPU 10 controls the movement of the ball based on the elevation angle θ in the pitch direction determined in step S22, the initial velocity V determined in step S24, and the azimuth angle φ in the pitch direction determined in step S30. .

  In step S <b> 32, the CPU 10 updates the difficulty level and score stored in the external main memory 12 in accordance with the success or failure of the shot. Specifically, the pitch direction posture of the controller 5 at the time of pitching is within the success range shown in FIG. 21, and the maximum value of the swing strength P is within the success range shown in FIG. When the twist amount R is within the success range shown in FIG. 25 (in this case, the ball released by the player character eventually passes through the ring), the CPU 10 determines that the shot is successful, and not so. In this case, the CPU 10 determines that the shooting has failed.

  In step S32 described above, the difficulty level is basically increased when the shoot is successful and decreased when the shoot is unsuccessful. However, various variations can be considered as the method of updating the difficulty level. Hereinafter, the variation of the difficulty level update method in step S32 will be described.

  In FIG. 27, when the shot is successful, a predetermined value (“1” in the example of FIG. 27) is added to the current difficulty level, and when the shot is successful, the predetermined value (FIG. 27) is calculated from the current difficulty level. In the example, “1”) is subtracted. In this way, the difficulty level is adaptively set according to the skill level of the player, so that the game is not too easy or too difficult for the player.

  In FIG. 28, when the shot is successful, a predetermined value (“1” in the example of FIG. 28) is added to the current difficulty level, and when the shot fails, the difficulty level is set to the initial value (in the example of FIG. 28). This is an example of resetting to “1”). By doing so, the difficulty level returns to the initial value when the shooting fails, so that the possibility of consecutive shooting failures is reduced, and a game play comfortable for the player is possible.

  In FIG. 29, when the shot is successful, a predetermined value (“1” in the example of FIG. 27) is added to the current difficulty level, and when the shot is successful, the predetermined value (of FIG. 27) is calculated from the current difficulty level. In the example, “1”) is subtracted, and the difficulty level is set to the initial value (“1” in the example of FIG. 28) every time one set (5 shots in the example of FIG. 29) is completed, regardless of whether the shot is successful or not. )). Normally, when the player performs the next shooting operation without leaving a time interval from the previous shooting operation, a relatively high-precision shooting operation is possible, but a certain time interval from the previous shooting operation is possible. When the next shooting operation is performed, the accuracy of the shooting operation tends to decrease. Therefore, as shown in the example of FIG. 29, when the difficulty level is reset to the initial value every time one set is completed, for example, a time interval between the sets becomes large due to a movement effect of the player character between the sets. However, the possibility that the first shot in each set is missed is reduced, and a game play comfortable for the player is possible.

  In the present embodiment, the difficulty level is updated according to the success or failure of the shoot as described above. However, the difficulty level may be determined by considering not only the success or failure of the shoot but also other conditions. Good. For example, in a basketball game in which the player can move the player character to a desired position and make a shot, the difficulty level updated according to the success or failure of the shot as described above is set as the “basic difficulty level”. When determining the success upper limit twist degree Rmax and the success lower limit twist degree Rmin in the main memory 12 and determining the success lower limit twist degree Rmin in step S29, the degree of difficulty corresponding to the distance between the player character and the ring with respect to the basic difficulty degree You may make it determine the success upper limit twist degree Rmax and the success lower limit twist degree Rmin using what added the offset. In this case, the CPU 10 can determine the difficulty level offset using, for example, a function or table as shown in FIG.

  When step S32 is finished, the shooting process is finished.

  Next, a method for correcting the twist amount R in step S27 in FIG. 16 will be described.

  In the present embodiment, the twist amount R when the first to fourth shots are shot is stored in the external main memory 12 as “twist amount R1” to “twist amount R4”, respectively. It is memorized, and at the time of the shot processing after the fifth shot, these “twist amount R1 of first throw” to “twist amount R4 of fourth throw” are used to calculate the present twist amount R (that is, the immediately preceding twist amount R1). The twist amount R) calculated in step S25 is corrected. More specifically, an average value of “twisted amount of twist R1” to “twisted amount of twist R4” is calculated, and the calculated average value is subtracted from the current twisted amount R.

  In the present embodiment, since the target value of the twist amount R required in the game is “0”, the twist amount R represents a deviation between the angular velocity around the Z axis and the target angular velocity at the time of pitching. Yes. Accordingly, the average value of “twist amount R1 of the first throw” to “twist amount R4 of the fourth throw” is the average of the angular velocity around the Z axis at the time of throwing from the target angular velocity in the shots of the first to fourth throws. It shows how much it has shifted. That is, by calculating an average value of “twist amount R1 of the first throw” to “twist amount R4 of the fourth throw”, it is possible to know the player's habit at the time of shooting operation (that is, the Z axis at the time of pitching). You can see how much the angular velocity around you tends to deviate from the target angular velocity). That is, in the present embodiment, how the twist amount R detected in response to the shooting operation tends to deviate from the target value (“0” in the present embodiment) of the twist amount R required in the game. An average value of “twisting amount R1 of the first throw” to “twisting amount R4 of the fourth throw” is used. However, the method of calculating the deviation tendency value is not limited to this.

  As described above, the twist amount R is corrected based on the deviation tendency value, so that when a shot is taken after the fifth shot, a shoot operation peculiar to each player (that is, an arm or a wrist when performing the shot operation) This can cancel out the movement 癖). In a conventional button switch operation or the like, a unique wrinkle for each player does not become a problem. However, in a game that uses the angular velocity of the input device 8 as in this embodiment, the wrinkles of the movement of the player's arm or wrist Will greatly affect each player, resulting in an advantage and disadvantage for each player. For example, even a player who can repeat a stable pitching operation has difficulty in making a successful shot only by having a habit that always causes a twist near the pitch detection timing. Therefore, in the present embodiment, the player's habit (that is, the tendency of the twist amount R when the shoot operation is performed) is detected from the twist amount R at the time of the shoot operation of the first to fourth throws. In the subsequent shooting operation, the twist amount R is corrected so as to offset the detected player's habit. As a result, even if the first to fourth shots fail due to a peculiar to the player, as long as the player always performs a shooting operation in a certain form, the ball throws after the fifth throw The azimuth angle φ of the direction becomes the target value “0”, and the shot is successful.

  In the present embodiment, when all 25 shots are made in the basketball game, the player's habit (that is, the deviation tendency value) is detected based on the first to fourth shot shooting operations. It is arbitrary whether the player's habit is detected based on the shooting operation of the pitching times. For example, the player's habit may be detected based on a shooting operation from the first shot to the previous shot.

  In the present embodiment, the twist amount R is corrected at the time of the fifth and subsequent shots. However, before the fifth shot (for example, the third shot), the twist amount R is corrected. It is also possible to correct the twist amount R by detecting the player's habit based on the shooting operations (for example, the first and second shooting operations).

  Further, in the present embodiment, an average value of “twisted twist amount R1” to “fourth twisted amount R4” is calculated, and the calculated average value is subtracted from the current twisted amount R. However, an arbitrary representative value such as a weighted average value, a mode value, or a median value may be used instead of a simple average value. The number of times of calculating the average is not limited to five times, but may be any other number, or the latest predetermined number of times may always be used.

  In this embodiment, the correction is performed so as to cancel the player's heel only with respect to the twist amount R. However, the correction is performed so as to cancel the player's heel with respect to an arbitrary parameter determined based on the angular velocity data. You may go. For example, based on the “maximum value of swing strength P” detected during the first to fourth shots, the maximum value of swing strength P is an ideal value (for example, the center of the success range in FIG. 22). The deviation tendency value indicating how the value tends to deviate from the value) is calculated, and the “maximum value of the swing strength P” is corrected using the deviation tendency value in the shots after the fifth shot. You may do it. The same applies to the “posture in the pitch direction of the controller during pitching” used in step S22.

  As described above, according to the present embodiment, the success range of the azimuth angle φ in the pitching direction of the ball when the player swings the input device 8 and performs a shooting operation can be changed according to the degree of difficulty. So the game never gets too monotonous. In this embodiment, the success range of the azimuth angle φ is changed according to the difficulty level, but in other embodiments, the success range of the elevation angle θ or the success range of the initial speed V is changed according to the difficulty level. May be.

  Further, according to the present embodiment, since the difficulty level can be changed according to the success or failure of the shot, the game is not too easy or too difficult for the player. In this embodiment, the difficulty level is changed according to the success or failure of the shot. However, in other embodiments, the difficulty level may be changed according to the success or failure of an arbitrary game operation using the angular velocity.

  Further, according to the present embodiment, the player learns the trap of the player's shooting operation while playing the basketball game, and corrects the angular velocity around the Z axis of the input device 8. Can be offset. In this embodiment, the angular velocity around the Z axis of the input device 8 is corrected. However, in other embodiments, the angular velocity around the X axis or the angular velocity around the Y axis of the input device 8 may be corrected.

  In the present embodiment, the case where a basketball game is executed in the game apparatus 3 has been described, but it goes without saying that the present invention can also be applied to games other than basketball.

  For example, in a golf game in which a player character in the virtual game space swings a golf club and flies a golf ball by swinging the input device 8 depending on whether the golf ball stops on the fairway or rough. The success or failure of the swing may be determined, and the difficulty level of the next swing operation (that is, the successful range of the angular velocity of the input device 8 required when the player performs the swing operation) may be changed according to the determination result.

  Also, for example, in a golf game such as that described above, when a golf course of all 18 holes is visited, for example, the player learns the trap of the swing operation of the player based on the swing operation of the player in the first hole, and the player in the second hole and thereafter In this swing operation, the angular velocity of the input device 8 detected during the swing operation by the player may be corrected so that the wrinkle of the player is offset.

  The basketball game of this embodiment is played by a single player, but in other embodiments, in a game where a plurality of players play against each other, the difficulty level is individually set and updated for each player. You may do. For example, when two players, a first player and a second player, play a battle play by operating different teams in a basketball game, the difficulty level for the first player depends on the success or failure of the shooting operation by the first player. And the difficulty level for the second player may be updated according to the success or failure of the shooting operation by the second player. As a result, even when players having different skill levels play against each other, an appropriate difficulty level corresponding to each skill level is set for each player, effectively avoiding a one-sided game development. can do.

  In this embodiment, when the swing strength P is maximal and the value is larger than the throwing threshold, the player character shoots, but the timing at which the player character shoots is not limited to this. .

  In the present embodiment, the initial value of the difficulty level is “1”, but the initial value of the difficulty level may be another value (for example, “5”).

  Further, in the present embodiment, the initial velocity and throwing direction of the ball are determined based on the shooting operation by the player, but the present invention is not limited to this, and any object other than the ball is operated by the player. The movement control may be performed based on the angular velocity around the predetermined axis of the input device (controller).

  In the present embodiment, the gyro sensors 55 and 56 detect the angular velocity in the triaxial direction, but the present invention can also be realized by detecting the angular velocity in the uniaxial or biaxial direction.

  In the present embodiment, the input device 8 and the game device 3 are connected by wireless communication. However, the input device 8 and the game device 3 may be electrically connected via a cable. .

  In the present embodiment, the CPU 10 of the game apparatus 3 executes the game program, so that the processing according to the above-described flowchart is performed. However, in other embodiments, part or all of the above processing is performed by the game. It may be performed by a dedicated circuit provided in the device 3.

DESCRIPTION OF SYMBOLS 1 Game system 2 Television 3 Game device 4 Optical disk 5 Controller 6 Marker part 7 Gyro sensor unit 8 Input device 10 CPU
11c GPU
11e Internal main memory 12 External main memory 32i B button 37 Acceleration sensor 55, 56 Gyro sensor 63 Angular velocity data 64 Acceleration data

Claims (14)

A game device that performs a game process based on operation data including angular velocity data acquired from an angular velocity sensor provided in a controller,
Game processing means for executing a game based on the angular velocity data and determining success or failure of the game based on a value of the angular velocity data;
Difficulty setting means for setting the difficulty of the game;
A game device comprising: difficulty level control means for changing a success range of angular velocity data determined to be successful by the game processing means based on the difficulty level set by the difficulty level setting means.   The game device according to claim 1, wherein the difficulty level control unit narrows the success range as the difficulty level set by the difficulty level setting unit is higher. The game processing means executes a game based on the angular velocity data a plurality of times, determines success or failure of the game for each of the plurality of games,
The difficulty level setting means sets the difficulty level of the next game so as to be higher than the difficulty level of the game of the current time when it is determined that the result of a certain game is successful. The game device according to claim 1 . The game processing means executes a game based on the angular velocity data a plurality of times, determines success or failure of the game for each of the plurality of games,
The difficulty level setting means sets the difficulty level of the next game so that if the result of a certain game is determined to be unsuccessful, the difficulty level setting means lowers the difficulty level of the game of the current time. the game device according to any one of claims 1 and 3. The game processing means includes first angular velocity data acquired from a first angular velocity sensor provided in a first controller operated by a first player, and a second controller operated by a second player. Based on the second angular velocity data acquired from the second angular velocity sensor provided in the game, a game in which the first player and the second player battle each other is executed, and the first angular velocity data and the second angular velocity are Based on the data value, the success or failure of the first game operation by the first player and the success or failure of the second game operation by the second player are determined respectively.
The difficulty level setting means individually sets the difficulty level of the first game operation and the difficulty level of the second game operation,
The difficulty level control means includes first angular velocity data that is determined by the game processing means that the first game operation is successful based on the difficulty level of the first game operation set by the difficulty level setting means. Second angular velocity data that is determined that the second game operation is successful in the game processing means based on the difficulty level of the second game operation set by the difficulty setting means. The game device according to claim 1, wherein the success range is changed. The difficulty level setting means sets the difficulty level of the first game operation of the next time according to the success or failure of the first game operation of a certain time, and according to the success or failure of the second game operation of the certain time. The game device according to claim 5 , wherein the second game operation difficulty level is set for the next time. A computer of a game device that performs game processing based on operation data including angular velocity data acquired from an angular velocity sensor provided in the controller,
Game processing means for executing a game based on the angular velocity data and determining success or failure of the game based on the value of the angular velocity data;
Difficulty setting means for setting the difficulty of the game, and
A game program for functioning as difficulty level control means for changing a success range of angular velocity data determined to be successful in the game processing means based on the difficulty level set by the difficulty level setting means. The game program according to claim 7 , wherein the difficulty level control unit narrows the success range as the difficulty level set by the difficulty level setting unit is higher. The game processing means executes a game based on the angular velocity data a plurality of times, determines success or failure of the game for each of the plurality of games,
The difficulty level setting means sets the difficulty level of the next game so as to be higher than the difficulty level of the game of the current time when it is determined that the result of a certain game is successful. The game program according to claim 7 . The game processing means executes a game based on the angular velocity data a plurality of times, determines success or failure of the game for each of the plurality of games,
The difficulty level setting means sets the difficulty level of the next game so that if the result of a certain game is determined to be unsuccessful, the difficulty level setting means lowers the difficulty level of the game of the current time. The game program according to claim 7 . The game processing means includes first angular velocity data acquired from a first angular velocity sensor provided in a first controller operated by a first player, and a second controller operated by a second player. Based on the second angular velocity data acquired from the second angular velocity sensor provided in the game, a game in which the first player and the second player battle each other is executed, and the first angular velocity data and the second angular velocity are Based on the data value, the success or failure of the first game operation by the first player and the success or failure of the second game operation by the second player are determined respectively.
The difficulty level setting means individually sets the difficulty level of the first game operation and the difficulty level of the second game operation,
The difficulty level control means includes first angular velocity data that is determined by the game processing means that the first game operation is successful based on the difficulty level of the first game operation set by the difficulty level setting means. Second angular velocity data that is determined that the second game operation is successful in the game processing means based on the difficulty level of the second game operation set by the difficulty setting means. The game program according to claim 7 , wherein the success range is changed. The difficulty level setting means sets the difficulty level of the first game operation of the next time according to the success or failure of the first game operation of a certain time, and according to the success or failure of the second game operation of the certain time. The game program according to claim 11 , wherein a difficulty level of the second game operation of the next round is set.   A game system for performing game processing based on operation data including angular velocity data acquired from an angular velocity sensor provided in a controller,
  Game processing means for executing a game based on the angular velocity data and determining success or failure of the game based on a value of the angular velocity data;
  Difficulty setting means for setting the difficulty of the game;
  A game system comprising: difficulty level control means for changing a success range of angular velocity data determined to be successful by the game processing means based on the difficulty level set by the difficulty level setting means.   A game processing method executed in a game device that performs game processing based on operation data including angular velocity data acquired from an angular velocity sensor provided in a controller,
  A game processing step of executing a game based on the angular velocity data and determining success or failure of the game based on a value of the angular velocity data;
  A difficulty level setting step for setting the difficulty level of the game;
  A game processing method comprising: a difficulty level control step of changing a success range of angular velocity data determined to be successful in the game processing step based on the difficulty level set in the difficulty level setting step.

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