JP5276055B2 - GAME DEVICE, GAME CONTROL METHOD, AND GAME CONTROL PROGRAM - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a game control technique that is highly entertaining. <P>SOLUTION: A game device includes: a light source control unit 112 for changing a position of a light source or an irradiation direction of light emitted from the light source, on the basis of an operation direction of a player, on a game field where an object is arranged; a shadow drawing unit 116 for drawing a shadow of the object projected by the light emitted from the light source on a projection surface which is provided on the game field; and a character control unit 118 for moving a character along a shadow of the object. <P>COPYRIGHT: (C)2012,JPO&amp;INPIT

Description

  The present invention relates to a game control technique, and more particularly to a game apparatus, a game control method, and a game control program for controlling a game in which a character is moved along a shadow of an object arranged in a three-dimensional space.

  There are many games in which a character is moved to a predetermined goal in a game field modeling a three-dimensional space. Efforts are being made to provide new entertainment such as placing gimmicks with various tastes in the game field and placing enemy characters.

US Patent Publication No. 2009-0104992

  The present inventors have come up with a technique for providing a completely new game in which a character is moved along the shadow of an object arranged in a three-dimensional space.

  The present invention has been made in view of such circumstances, and an object thereof is to provide a game control technique with higher entertainment.

  One embodiment of the present invention relates to a game control program. The game control program is a function of changing a position of a light source or a light irradiation direction based on an operation instruction of a player in a game field in which an object is arranged, and the projection on a projection plane provided in the game field. The computer realizes the function of drawing the shadow of the object and the function of moving the character along the shadow of the object.

  It should be noted that any combination of the above-described constituent elements and a representation of the present invention converted between a method, an apparatus, a system, etc. are also effective as an aspect of the present invention.

  According to the present invention, a more entertaining game control technique can be provided.

It is a figure which shows the use environment of the game system concerning the Example of this invention. It is a figure which shows the external appearance structure of an input device. It is a figure which shows the internal structure of an input device. It is a figure which shows the structure of a game device. It is a figure which shows the structure of an application process part. It is a figure which shows the example of the game field in the game controlled by the game device which concerns on embodiment. It is a figure which shows the example of a game screen. It is a figure which shows the image of the shadow of the object drawn by the shadow drawing part. It is a figure which shows the example of a game screen. It is a figure which shows the example of a game screen. It is a figure which shows the example of the game screen by which the gimmick which has the function to make a character jump is arrange | positioned. It is a figure which shows the example of the game screen by which the gimmick which has the function to make a character jump is arrange | positioned. It is a figure which shows the example of the game screen by which the gimmick which has the function to drop a character is arrange | positioned. It is a figure which shows the example of the game screen by which the gimmick which has the function to drop a character is arrange | positioned. It is a figure explaining the function which determines formation of a goal. It is a figure for demonstrating the function which determines formation of a tunnel. It is a figure for demonstrating the function which determines formation of a shadow picture.

  The game device according to the embodiment is a game in which the user moves the character along the shadow of the object by changing the position and shape of the shadow of the object arranged in the three-dimensional space by operating the position of the light source. I will provide a. By realizing a phenomenon in the game world where the character moves over the shadow, which cannot occur in the game world, it is possible to provide the user with a novel enjoyment that cannot be experienced in the real world.

  FIG. 1 shows a use environment of a game system 1 according to an embodiment of the present invention. The game system 1 includes a game device 10 that executes game software, a display device 12 that outputs a processing result by the game device 10, an input device 20, and an imaging device 14 that images the input device 20.

  The input device 20 is an operation input device for a user to give an operation instruction, and the game apparatus 10 processes a game application based on the operation instruction in the input device 20 and an image signal indicating a processing result of the game application. Is a processing device for generating

  The input device 20 has a function of transmitting an operation instruction from the user to the game apparatus 10 and is configured as a wireless controller capable of wireless communication with the game apparatus 10 in this embodiment. The input device 20 and the game apparatus 10 may establish a wireless connection using a Bluetooth (registered trademark) protocol. The input device 20 is not limited to the wireless controller, and may be a wired controller connected to the game apparatus 10 via a cable.

  The input device 20 is driven by a battery and is configured to have a plurality of buttons for performing operation instructions for proceeding with the game. When the user operates the button of the input device 20, the operation instruction is transmitted to the game apparatus 10 by radio. The game apparatus 10 receives an operation instruction from the input device 20, controls the game progress in accordance with the operation instruction, and generates a game image signal. The generated game image signal is output from the display device 12.

  The imaging device 14 is a video camera composed of a CCD imaging device, a CMOS imaging device, or the like. The imaging device 14 images a real space at a predetermined cycle and generates a frame image for each cycle. For example, the imaging speed of the imaging device 14 may be 30 frames / second so as to match the frame rate of the display device 12. The imaging device 14 is connected to the game device 10 via a USB (Universal Serial Bus) or other interface.

  The display device 12 is a display that outputs an image. The display device 12 receives an image signal generated by the game device 10 and displays a game screen. The display device 12 may be a television having a display and a speaker, or may be a computer display. The display device 12 may be connected to the game device 10 by a wired cable, or may be wirelessly connected by a wireless local area network (LAN) or the like.

  In the game system 1 of the present embodiment, the input device 20 has a light emitter. During the game, the light emitter emits light in a predetermined color and is imaged by the imaging device 14. The imaging device 14 images the input device 20, generates a frame image, and supplies the frame image to the game device 10. The game apparatus 10 acquires a frame image, and derives position information of the light emitter in real space from the position and size of the image of the light emitter in the frame image. The game apparatus 10 treats the position information as a game operation instruction and reflects it in the game process such as controlling the movement of the player character. The game apparatus 10 according to the present embodiment has a function of processing a game application using not only an operation input such as a button of the input device 20 but also the positional information of the acquired light emitter image.

  The light emitter of the input device 20 is configured to emit light in a plurality of colors. The light emitter can change the light emission color in accordance with a light emission instruction from the game apparatus 10.

  The input device 20 includes an acceleration sensor and a gyro sensor. The detection value of the sensor is transmitted to the game apparatus 10 at a predetermined cycle, and the game apparatus 10 acquires the detection value of the sensor and acquires the posture information of the input device 20 in the real space. The game apparatus 10 handles the posture information as a game operation instruction and reflects it in the game processing. As described above, the game apparatus 10 according to the present embodiment has a function of processing a game application using the acquired posture information of the input device 20.

  FIG. 2 shows an external configuration of the input device 20. FIG. 2A shows the top surface configuration of the input device 20, and FIG. 2B shows the bottom surface configuration of the input device 20. The input device 20 has a light emitter 22 and a handle 24. The light emitter 22 is formed into a sphere with a light-transmitting resin on the outside, and has a light emitting element such as a light emitting diode or a light bulb on the inside. When the inner light emitting element emits light, the entire outer sphere glows. Operation buttons 30, 32, 34, 36, and 38 are provided on the upper surface of the handle 24, and an operation button 40 is provided on the lower surface. The user operates the operation buttons 30, 32, 34, 36, and 38 with the thumb and the operation button 40 with the index finger while holding the end of the handle 24 by hand. The operation buttons 30, 32, 34, 36, and 38 are configured to be pressed, and the user operates by pressing them. The operation button 40 may be capable of inputting an analog amount.

  The user plays the game while watching the game screen displayed on the display device 12. Since the imaging device 14 needs to image the light emitter 22 during execution of the game application, the imaging device 14 is preferably arranged so that the imaging range faces the same direction as the display device 12. In general, since a user often plays a game in front of the display device 12, the imaging device 14 is arranged so that the direction of the optical axis thereof coincides with the front direction of the display device 12. Specifically, the imaging device 14 is preferably arranged in the vicinity of the display device 12 so that the imaging range includes a position where the user can visually recognize the display screen of the display device 12. Thereby, the imaging device 14 can image the input device 20.

  FIG. 3 shows the internal configuration of the input device 20. The input device 20 includes a wireless communication module 48, a processing unit 50, a light emitting unit 62, and operation buttons 30, 32, 34, 36, 38, and 40. The wireless communication module 48 has a function of transmitting / receiving data to / from the wireless communication module of the game apparatus 10. The processing unit 50 executes intended processing in the input device 20.

  The processing unit 50 includes a main control unit 52, an input receiving unit 54, a triaxial acceleration sensor 56, a triaxial gyro sensor 58, and a light emission control unit 60. The main control unit 52 transmits and receives necessary data to and from the wireless communication module 48.

  The input receiving unit 54 receives input information from the operation buttons 30, 32, 34, 36, 38, 40 and sends it to the main control unit 52. The triaxial acceleration sensor 56 detects acceleration components in the XYZ triaxial directions. The triaxial gyro sensor 58 detects angular velocities in the XZ plane, the ZY plane, and the YX plane. Here, the width direction of the input device 20 is set as the X axis, the height direction is set as the Y axis, and the longitudinal direction is set as the Z axis. The triaxial acceleration sensor 56 and the triaxial gyro sensor 58 are preferably disposed in the handle 24 of the input device 20 and are disposed in the vicinity of the center in the handle 24. The wireless communication module 48 transmits detection value information from the three-axis acceleration sensor 56 and detection value information from the three-axis gyro sensor 58 together with input information from the operation buttons to the wireless communication module of the game apparatus 10 at a predetermined cycle. . This transmission cycle is set to 11.25 milliseconds, for example.

  The light emission control unit 60 controls the light emission of the light emitting unit 62. The light emitting unit 62 includes a red LED 64a, a green LED 64b, and a blue LED 64c, and enables light emission of a plurality of colors. The light emission control unit 60 adjusts the light emission of the red LED 64a, the green LED 64b, and the blue LED 64c, and causes the light emitting unit 62 to emit light in a desired color.

  When the wireless communication module 48 receives the light emission instruction from the game apparatus 10, the wireless communication module 48 supplies the light emission instruction to the main control unit 52, and the main control unit 52 supplies the light emission control unit 60 with the light emission instruction. The light emission control unit 60 controls the light emission of the red LED 64a, the green LED 64b, and the blue LED 64c so that the light emitting unit 62 emits light in the color specified by the light emission instruction. For example, the light emission control unit 60 may perform lighting control of each LED by PWM (pulse width modulation) control.

  FIG. 4 shows the configuration of the game apparatus 10. The game apparatus 10 includes a frame image acquisition unit 80, an image processing unit 82, a device information deriving unit 84, a wireless communication module 86, an input receiving unit 88, an output unit 90, and an application processing unit 100. The processing function of the game apparatus 10 in the present embodiment is realized by a CPU, a memory, a program loaded in the memory, and the like, and here, a configuration realized by cooperation thereof is illustrated. The program may be built in the game apparatus 10 or may be supplied from the outside in a form stored in a recording medium. Accordingly, those skilled in the art will understand that these functional blocks can be realized in various forms by hardware only, software only, or a combination thereof. Note that the game apparatus 10 may have a plurality of CPUs due to the hardware configuration.

  The wireless communication module 86 establishes wireless communication with the wireless communication module 48 of the input device 20. As a result, the input device 20 can transmit operation button state information, detection value information of the triaxial acceleration sensor 56 and triaxial gyro sensor 58 to the game apparatus 10 at a predetermined cycle.

  The wireless communication module 86 receives the operation button state information and sensor detection value information transmitted from the input device 20 and supplies them to the input receiving unit 88. The input receiving unit 88 separates the button state information and the sensor detection value information and delivers them to the application processing unit 100. The application processing unit 100 receives button state information and sensor detection value information as game operation instructions. The application processing unit 100 handles sensor detection value information as posture information of the input device 20.

  The frame image acquisition unit 80 is configured as a USB interface, and acquires a frame image from the imaging device 14 at a predetermined imaging speed (for example, 30 frames / second). The image processing unit 82 extracts a light emitter image from the frame image. The image processing unit 82 specifies the position and size of the light emitter image in the frame image. When the light emitter 22 of the input device 20 is lit in a color that is unlikely to be used in the user environment, for example, the image processing unit 82 can extract the light emitter image from the frame image with high accuracy. The image processing unit 82 may binarize the frame image data using a predetermined threshold value to generate a binarized image. As a result of this binarization processing, the pixel value of the pixel holding the luminance greater than the predetermined threshold is encoded as “1”, and the pixel value of the pixel holding the luminance equal to or lower than the predetermined threshold is encoded as “0”. The By illuminating the illuminator 22 with a luminance exceeding the predetermined threshold, the image processing unit 82 can specify the position and size of the illuminant image from the binarized image. For example, the image processing unit 82 specifies the barycentric coordinates of the illuminant image in the frame image and the radius of the illuminant image.

  The device information deriving unit 84 derives position information of the input device 20 as viewed from the imaging device 14 from the position and size of the light emitter image specified by the image processing unit 82. The device information deriving unit 84 derives position coordinates in the camera coordinates from the barycentric coordinates of the light emitter image, and derives distance information from the imaging device 14 from the radius of the light emitter image. The position coordinates and distance information constitute position information of the input device 20. The device information deriving unit 84 derives the position information of the input device 20 for each frame image and passes it to the application processing unit 100. The application processing unit 100 receives the position information of the input device 20 as a game operation instruction.

  The application processing unit 100 progresses the game from the position information and posture information of the input device 20 and the button state information, and generates an image signal indicating the processing result of the game application. The image signal is sent from the output unit 90 to the display device 12 and output as a display image.

  FIG. 5 shows a configuration of the application processing unit 100. The application processing unit 100 includes an operation instruction receiving unit 102, a control unit 110, a parameter holding unit 150, a game data holding unit 152, and an image generation unit 154.

  The operation instruction receiving unit 102 receives the position information of the input device 20 from the device information deriving unit 84 and the posture information and button state information of the input device 20 from the input receiving unit 88 as operation instructions. The control unit 110 executes the game program based on the operation instruction received by the operation instruction receiving unit 102 and advances the game. The parameter holding unit 150 holds parameters necessary for the progress of the game. The game data holding unit 152 holds data necessary for the game, such as three-dimensional data such as objects constituting the game world. The image generation unit 154 generates a display screen by adding various information to the image of the game field rendered by the control unit 110.

  The control unit 110 includes a light source control unit 112, a game field drawing unit 114, a shadow drawing unit 116, a character control unit 118, a gimmick control unit 120, and a shadow shape determination unit 122.

  The light source control unit 112 controls the position of the light source set in the game field or the irradiation direction of light emitted from the light source based on the position information, posture information, and button state information of the input device 20. When the operation button 40 of the input device 20 is pressed, the light source control unit 112 is based on the information indicating the current light source position and irradiation direction held in the parameter holding unit 150 and the position information and posture information of the input device 20. Then, the light source position and the irradiation direction angle are calculated, notified to the shadow drawing unit 116, and stored in the parameter holding unit 150.

  The game field drawing unit 114 sets the viewpoint position and the line-of-sight direction for rendering the game field, renders the object and shadow projection plane arranged in the game field, and generates an image of the game field. In the present embodiment, the walls and the floor constituting the game field are used as projection planes.

  The shadow drawing unit 116 acquires the viewpoint position and line-of-sight direction set by the game field drawing unit 114 and the light source position and irradiation direction set by the light source control unit 112, and projects them onto the walls and floor by the light emitted from the light source. Draw the shadow of the object to be created. The shadow two-dimensional image drawn by the shadow drawing unit 116 is stored in the parameter holding unit 150.

  The character control unit 118 moves the character along the shadow drawn by the shadow drawing unit 116. The character control unit 118 refers to the two-dimensional image of the shadow drawn by the shadow drawing unit 116 to determine the character movement destination. Even if a plurality of objects are arranged at positions separated from each other, the character control unit 118 allows the character to move between the shadows of the objects as long as the shadows of the objects are connected to each other. The character control unit 118 automatically moves the character at a predetermined speed. When an operation instruction for increasing or decreasing the moving speed is acquired from the player, the character controlling unit 118 increases or decreases the moving speed of the character.

  The gimmick control unit 120 controls a gimmick that activates a predetermined function set in an object arranged in the game field. The gimmick control unit 120 determines whether or not to activate the function of the gimmick when the character controlled by the character control unit 118 passes near the arranged gimmick. This is notified to the control unit 118 and the like. The gimmick control unit 120 may determine whether to activate the function of the arranged gimmick at a predetermined timing, for example, for each frame.

  The shadow shape determination unit 122 determines whether or not the shadow shape of the object drawn by the shadow drawing unit 116 is a predetermined shape. The shadow shape determination unit 122 compares the two-dimensional image of the shadow drawn by the shadow drawing unit 116 stored in the parameter holding unit 150 with a predetermined shape stored in the game data holding unit 152. Then, a predetermined shape is detected from the shadow two-dimensional image. The shadow shape determination unit 122 may determine that a shadow having a predetermined shape has been formed when the position of the light source and the irradiation direction match the predetermined position and direction. When a predetermined shape is detected, the player is notified by displaying that fact in an identifiable manner. The shadow shape determination unit 122 may determine the shape of the shadow at a predetermined timing, for example, for each frame. The shadow shape determination unit 122 is used to determine whether or not the shape of the gimmick shadow is a predetermined shape when determining whether or not the gimmick control unit 120 activates the gimmick function. Also good.

  The shadow shape determination unit 122 may present to the player step by step that the shadow of the object drawn by the shadow drawing unit 116 has approached a predetermined shape to be formed. For example, in addition to a predetermined shape to be formed, a plurality of shapes similar to the predetermined shape are held in stages, and when a shape that matches those shapes is detected, that fact is shown to the player. Also good. Further, when searching for a predetermined shape from the two-dimensional image of the shadow drawn by the shadow drawing unit 116, shape matching was performed using any known technique, and a result higher than the predetermined similarity was obtained. In some cases, this may be presented to the player. Further, when the deviation of the light source position or the irradiation direction from the predetermined position or direction becomes less than a predetermined value, that fact may be presented to the player.

  FIG. 6 shows an example of a game field in a game controlled by the game device according to the embodiment. In the three-dimensional space, a wall 210 constituting a game field and objects 202 and 204 arranged in the game field are provided. Light is applied to the game field from a light source (not shown), and the shadow 212 of the object 202 and the shadow 214 of the object 204 are projected onto the wall 210 by the light. In the present embodiment, only the shadow projected inside the region 200 that is exposed to strong light is displayed, but the shadow drawing unit 116 also draws the shadow projected outside the region 200. The character control unit 118 also allows the character to move on the shadow projected outside the area 200.

  When the player moves the input device 20 up, down, left, and right while pressing the operation button 40 of the input device 20, the light source control unit 112 moves the position of the light source up, down, left, and right according to the position information of the input device 20, Alternatively, the illumination angle of the light source is tilted up, down, left and right. Further, when the player tilts the input device 20 up, down, left, right while pressing the operation button 40 of the input device 20, the position of the light source is moved up, down, left, right according to the attitude information of the input device 20, or the light source is irradiated. Tilt the angle up / down / left / right. The light source control unit 112 may change the position or angle of the light source along the x-axis and y-axis that are the coordinate axes of the three-dimensional coordinates in the game field, or the coordinate axes of the two-dimensional coordinates in the screen on which the game field is rendered. The position or angle of the light source may be changed along a certain X axis and Y axis. The light source control unit 112 may move the position of the light source in the z-axis direction or the depth direction of the screen according to the distance between the input device 20 and the imaging device 14.

  FIG. 7 shows an example of the game screen. When the game is started, the game field drawing unit 114 acquires the coordinates indicating the initial position of the character from the game data holding unit 152, and displays the character 220 on the swing 222 at the initial position. Also, the coordinates indicating the position of the goal are acquired from the game data holding unit 152, and the goal 224 is displayed at the position. When the player operates the light source to illuminate the character 220 with light, the character control unit 118 causes the character 220 to fall from the swing 222. The character control unit 118 moves the current position of the character 220 downward by a predetermined coordinate value for each frame. If there is no shadow below the character 220, the character 220 falls to the bottom of the screen and the game is over. If there is a shadow below the character 220, the character control unit 118 causes the character 220 to land on the shadow. Therefore, at the start of the game, the player needs to illuminate the character 220 with light while adjusting the position and angle of the light source so that the shadow of the object is projected below the character 220.

  FIG. 8 shows an image of the shadow of the object drawn by the shadow drawing unit 116. The character control unit 118 refers to the two-dimensional image and moves the character 220 along the upper part of the shadow 212 on which the character 220 has landed. The character control unit 118 first moves the character 220 to the right, and when the character 220 reaches the right end of the shadow 212, moves the character 220 to the left. When the character 220 reaches the left end of the shadow 212, the character 220 is moved in the right direction. The character control unit 118 may first move the character 220 to the left.

  If there is a step in the shadow, the character control unit 118 may allow the character to get over the rising step up to a predetermined height, and move in the reverse direction without going over the rising step over the predetermined height. Good. Further, the descending step up to a predetermined height may cause the character to jump off, and the descending step above the predetermined height may be moved in the opposite direction without jumping off. In addition, the character control unit 118 allows the character to jump to the adjacent shadow if the gap between the shadow that the character touches the ground and another shadow adjacent to the shadow is within a predetermined range. Also good.

  If there is another shadow that is not continuous with the shadow on which the character touches the ground, the character control unit 118 becomes an obstacle. Then, it may be determined that the character cannot move in that direction, and the character may be moved in the reverse direction.

  In the state shown in FIG. 8, the shadow 212 to which the character 220 is grounded is not connected to the goal 224, so the character 220 cannot reach the goal 224. The player guides the character 220 to the goal 224 by adjusting the position and angle of the light source so that the shadow 212, the shadow 214, and the goal 224 are connected together.

  FIG. 9 shows an example of the game screen. When the player moves the position of the light source to the left by the input device or moves the light irradiation direction to the right, the position of the shadow of the object moves to the right. When the light source control unit 112 changes the light source position or the irradiation direction, the shadow drawing unit 116 sets the light source position and the irradiation direction for each frame, and draws the shadow of the object projected on the wall and the floor. While the light source control unit 112 changes the position or angle of the light source, the character control unit 118 stops the character 220 on the spot without moving, but moves the shadow 212 drawn by the shadow drawing unit 116. At the same time, the character 220 is also moved. Accordingly, the character 220 moves to the right together with the shadow 212 while riding on the shadow 212. When the character is moving along with the movement of the shadow, if the character collides with another obstacle such as a shadow, the character control unit 118 moves the character so that it is pushed by the obstacle. As a result of the character being moved by the obstacle, the character control unit 118 causes the character to fall downward from the position when the character is out of the grounded shadow block.

  FIG. 10 shows an example of the game screen. When the player moves the light source position further to the left or moves the irradiation direction further to the right, the shadow of the object moves further to the right, the shadow 212 of the object 202, the shadow 214 of the object 204, and the goal 224 is integrated. If the light source position and the irradiation direction are fixed in this state, the character control unit 118 moves the character 220 to the goal 224, and the game is cleared.

  Here, details of operations of the light source control unit 112 and the character control unit 118 will be further described. When the light source position or irradiation direction is changed by the light source control unit 112, the shadow drawing unit 116 sets the viewpoint position and line-of-sight direction of the camera, the position of the light source and the irradiation direction, and moves the walls and floors in the game field. Draw an object's shadow as a projection plane. Then, two-dimensional coordinates on the game screen of the position drawn as a shadow are calculated and stored in the parameter holding unit 150. At this time, only the two-dimensional coordinates of the upper end of the shadow block may be stored in the parameter holding unit 150. The light source control unit 112 obtains the correspondence between the positions of the shadows before and after the change of the light source position or the irradiation direction, and notifies the character control unit 118 of the changed coordinates corresponding to the coordinates of the shadow that the character touches before the change. To do. When the gimmick is arranged in the game field, the light source control unit 112 stores the gimmick type and the shadow coordinates in the parameter holding unit 150.

  While the light source control unit 112 changes the light source position or the irradiation direction, the character control unit 118 does not automatically move the character and stops the character on the spot, but with the movement of the grounded shadow The character is moved to the changed coordinates notified from the light source control unit 112. The character control unit 118 controls the light source control unit 112 to stop the character if the speed at which the light source position or the irradiation direction is changed is equal to or higher than a predetermined speed, and to stop the character if the speed is lower than the predetermined speed. May be. When the character jumps or falls and the character control unit 118 is not in contact with the shadow, the character control unit 118 does not stop the character while the light source control unit 112 changes the light source position or the irradiation direction. May be moved. While the light source control unit 112 has not changed the light source position or irradiation direction, the character control unit 118 refers to the shadow two-dimensional image stored in the parameter holding unit 150 to determine the character movement position, Update the two-dimensional coordinates of the character on the game screen.

  Next, a gimmick placed in the game field will be described. FIG. 11 shows an example of a game screen on which gimmicks having a function of jumping characters are arranged. The spherical object 232 is a gimmick having a function of causing a character to jump. When the shadow 242 of the object 232 overlaps the shadow 212 with which the character 220 is grounded, when the character 220 moves over the shadow 242, the gimmick function is activated, and the character 220 jumps upward.

  FIG. 12 shows an example of a game screen on which gimmicks having a function of jumping characters are arranged. When the shadow 242 of the object 232 does not overlap the shadow 212 that the character 220 is grounded, the shadow 242 does not function as a gimmick that causes the character 220 to jump, and becomes an obstacle that prevents the character 220 from moving.

  When drawing the shadow of the object, the shadow drawing unit 116 records the normal object shadow and the gimmick shadow in the parameter holding unit 150 so as to be distinguishable. A flag indicating whether the shadow is a gimmick shadow may be recorded in each dot on the two-dimensional plane on which the shadow is drawn, or the coordinates of the gimmick shadow may be recorded as a table. When the character control unit 118 moves the character, the character control unit 118 refers to the parameter holding unit 150 to determine whether the shadow that the character touches is a gimmick shadow. Notify the gimmick control unit 120.

  The gimmick control unit 120 refers to the two-dimensional image of the shadow drawn by the shadow drawing unit 116, and the gimmick shadow is in a predetermined state based on the state of the gimmick shadow on which the character is grounded. If it is not, activate the gimmick function. The gimmick control unit 120 determines whether or not to activate the gimmick function with reference to the state of the shadow around the shadow of the object on which the gimmick is arranged in the two-dimensional image of the shadow. In the case of the gimmick having the function of jumping the character shown in FIG. 11 and FIG. 12, if the gimmick's shadow overlaps the shadow that the character has touched until immediately before, the gimmick's function must be activated and overlapped. For example, the gimmick function is not activated.

  FIG. 13 shows an example of a game screen on which gimmicks having a function of dropping a character are arranged. The object 234 having a cavity is a gimmick having a function of dropping a character. When the shadow 244 of the object 234 has a hole and the character 220 moves over the shadow 244, the gimmick function is activated, and the character 220 falls below the shadow 244.

  FIG. 14 shows an example of a game screen on which a gimmick having a function of dropping a character is arranged. When light is irradiated from the light source position and the irradiation direction so that the cavity is not projected and the shadow 244 of the object 234 is not perforated, the shadow 244 does not function as a gimmick that causes the character 220 to fall. It can pass over the shadow 244.

  The gimmick control unit 120 refers to the two-dimensional image of the shadow drawn by the shadow drawing unit 116 and confirms whether a hole derived from the cavity of the object 234 is below the current position of the character. If is open, the gimmick function is activated. If there is no hole, the gimmick function is not activated.

  Next, the function of the shadow shape determination unit 122 will be described. FIG. 15 is a diagram for explaining a function for determining the formation of a goal. FIG. 15A shows a shadow 262 of a spherical object 252 and a shadow 264 of a rectangular parallelepiped object 254. FIG. 15B shows a state in which the shadow 262 of the spherical object 252 and the shadow 264 of the rectangular parallelepiped object 254 overlap each other. The shadow shape determination unit 122 determines that a goal has been formed when a shadow having the shape illustrated in FIG. 15B is detected from the shadow two-dimensional image drawn by the shadow drawing unit 116. When determining that the goal has been formed, the shadow shape determination unit 122 notifies the shadow drawing unit 116 of the fact. The shadow drawing unit 116 changes the shadow 262 and the shadow 264 to an image showing the goal 224 as shown in FIG. Thereby, the player is notified that the goal 224 has been formed.

  FIG. 16 is a diagram for explaining a function of determining formation of a tunnel. FIG. 16A shows a shadow 266 of an object 256 having a gate shape, a shadow 267 of another object 257 having a gate shape, and a shadow 268 of an object 258 having a rectangular column shape. FIG. 16B shows a state where the shadow 266 of the gate 256 and the shadow 268 of the column 258 are in contact with each other, and the shadow 267 of the gate 257 and the shadow 268 of the column 258 are in contact with each other. The shadow shape determination unit 122 determines that a tunnel is formed when a shadow having the shape shown in FIG. 16B is detected from the shadow two-dimensional image drawn by the shadow drawing unit 116. When the shadow shape determination unit 122 determines that a tunnel is formed, the shadow shape determination unit 122 notifies the character control unit 118 to that effect.

  As shown in FIG. 16C, when the character 220 passes through the shadow 266 of the gate 256, the character control unit 118 makes the character 220 pass through the shadow 268 of the pillar 258, as if it has passed through the shadow 267 of the gate 257. Move to. When the character 220 passes the shadow 267 of the gate 257 and the shadow 268 of the pillar 258 does not touch the shadow of another gate, the character control unit 118 causes the character 220 to come out of the shadow 267 of the gate 257 again. The character 220 is moved.

  When there are two or more gate shadows in contact with the pillar shadow, the character control unit 118 calculates the distance to the shadow of the other gate from the position of the gate shadow passed by the character as the starting point. Move the character to the shadow of the gate at the position. If there are multiple shadows of the closest gate, you can move to the shadow of the top gate, or you can move it to the shadow of the leftmost gate. May be determined. When the character enters the tunnel from the shadow of a certain gate and has not yet escaped from the shadow of another gate, the light source control unit 112 changes the light source position or irradiation direction, and the tunnel is cut off. The unit 118 may cause the character to escape from the shadow of any gate connected to the tunnel, or the game may be over.

  FIG. 17 is a diagram for explaining a function of determining the formation of a shadow picture. In the example of this figure, the object is arranged so that a shadow of a specific shape is formed when light is irradiated in a predetermined direction from a predetermined light source position. The player changes the light source position or the irradiation direction so that a hidden shadow picture is formed using the given subject as a hint. When the shadow shape determination unit 122 determines that a shadow of a specific shape has been formed, the player is notified of that fact. The shadow shape determination unit 122 may detect a specific shape with reference to the two-dimensional image of the shadow drawn by the shadow drawing unit 116, and the light source position and irradiation direction changed by the light source control unit 112 may be detected. It may be determined whether or not it matches a specific position and direction. When a shadow of a specific shape is formed, a path for guiding the character to the goal may be formed.

  In the above, this invention was demonstrated based on the Example. This embodiment is an exemplification, and it will be understood by those skilled in the art that various modifications can be made to each component and combination of processing processes, and such modifications are within the scope of the present invention.

  1 game system, 10 game device, 110 control unit, 112 light source control unit, 114 game field drawing unit, 116 shadow drawing unit, 118 character control unit, 120 gimmick control unit, 122 shadow shape determination unit, 150 parameter holding unit, 152 Game data holding unit, 154 image generation unit.

Claims (8)

A program that is executed in a game device that controls a game by arithmetic means according to an instruction from a player received via an input means, and displays an image of the game on a display means,
The computing means is
A light source control unit that changes a position of a light source or an irradiation direction of light emitted from the light source based on a player's operation instruction received via the input unit in a game field in which an object is arranged;
A shadow rendering unit that reads out data of the object from a storage unit, renders a shadow of the object projected by light emitted from the light source on a projection surface provided in the game field, and displays the shadow on the display unit ,
Function as a character control section that automatically moves the character displayed on the display means along the shadow of the object,
While the character control unit is changing the position of the light source or the irradiation direction of the light emitted from the light source, the character control unit is positioned at the light source or the irradiation direction of the light emitted from the light source. A game control program characterized in that the character is stopped if the speed of changing the speed is equal to or higher than a predetermined speed, and is not stopped if the speed is lower than the predetermined speed. A program that is executed in a game device that controls a game by arithmetic means according to an instruction from a player received via an input means, and displays an image of the game on a display means,
The computing means is
A light source control unit that changes a position of a light source or an irradiation direction of light emitted from the light source based on a player's operation instruction received via the input unit in a game field in which an object is arranged;
A shadow rendering unit that reads out data of the object from a storage unit, renders a shadow of the object projected by light emitted from the light source on a projection surface provided in the game field, and displays the shadow on the display unit ,
Function as a character control section that automatically moves the character displayed on the display means along the shadow of the object,
When the character is in contact with the shadow, the character control unit stops the character while the light source control unit changes the position of the light source or the irradiation direction of light emitted from the light source. When the character is not in contact with the shadow, the light source control unit does not stop the character while changing the position of the light source or the irradiation direction of the light emitted from the light source. Game control program. A program that is executed in a game device that controls a game by arithmetic means according to an instruction from a player received via an input means, and displays an image of the game on a display means,
The computing means is
A light source control unit that changes a position of a light source or an irradiation direction of light emitted from the light source based on a player's operation instruction received via the input unit in a game field in which an object is arranged;
A shadow rendering unit that reads out data of the object from a storage unit, renders a shadow of the object projected by light emitted from the light source on a projection surface provided in the game field, and displays the shadow on the display unit ,
Function as a character control section that automatically moves the character displayed on the display means along the shadow of the object,
When the character is in contact with the shadow, the character control unit changes the position of the light source or the position of the light source while the light source control unit changes the position of the light source or the irradiation direction of light emitted from the light source. If the speed of changing the irradiation direction of light emitted from the light source is equal to or higher than a predetermined speed, the character is stopped. If the speed is lower than the predetermined speed, the character is not stopped and the character is not in contact with the shadow. Sometimes, the game control program does not stop the character while the light source control unit changes the position of the light source or the irradiation direction of light emitted from the light source.   The character control unit makes it possible for the character to move between the shadows of the objects as long as the shadows of the objects are connected to each other even if the plurality of objects are arranged at distant positions. The game control program according to any one of claims 1 to 3, wherein   The said character control part determines the movement destination of the said character with reference to the two-dimensional image of the shadow of the said object which the said shadow drawing part drawn. Game control program. A light source control unit that changes the position of the light source or the light irradiation direction based on the operation instruction of the player received via the input means in the game field in which the object is arranged;
A shadow rendering unit that reads out data of the object from a storage unit, renders a shadow of the object projected by light emitted from the light source on a projection surface provided in the game field, and displays the shadow on the display unit; ,
While the character displayed on the display means is automatically moved along the shadow of the object and the light source control unit changes the position of the light source or the irradiation direction of the light emitted from the light source. A character control unit for stopping the character,
The character control unit stops the character if the speed at which the light source control unit changes the position of the light source or the irradiation direction of light emitted from the light source is greater than or equal to a predetermined speed, and if the speed is less than the predetermined speed The character is not stopped, or when the character is not in contact with the shadow, the light source control unit also stops the character while changing the position of the light source or the irradiation direction of the light emitted from the light source. A game device characterized by not allowing A game control method that is executed in a game device that controls a game by a calculation unit according to an instruction from a player received via an input unit and displays an image of the game on a display unit,
A step of changing a light source position or a light irradiation direction based on an operation instruction of a player received through the input means in a game field in which an object is arranged, and a light source control unit realized by the calculation means;
A shadow rendering unit realized by the computing unit reads the object data from the storage unit, and renders the shadow of the object projected by the light emitted from the light source on the projection surface provided in the game field. And displaying on the display means;
The character control unit realized by the calculation unit automatically moves the character displayed on the display unit along the shadow of the object, and the light source control unit is irradiated from the position of the light source or the light source. A step of stopping the character while changing the irradiation direction of the light.
The character control unit stops the character if the speed at which the light source control unit changes the position of the light source or the irradiation direction of light emitted from the light source is greater than or equal to a predetermined speed, and if the speed is less than the predetermined speed The character is not stopped, or when the character is not in contact with the shadow, the light source control unit also stops the character while changing the position of the light source or the irradiation direction of the light emitted from the light source. The game control method characterized by not letting it do.   A computer-readable recording medium on which the game control program according to any one of claims 1 to 5 is recorded.

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