JP2005204762A - Two-screen display game device and two-screen display game program - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a new game device and a game program which enable the display of a normal game screen in one of a display section for two screens and that of some images alone such as a course or an item alone in the other display section to leave ambiguity and makes a player play a game while searching two screens by moving player characters to the other display section. <P>SOLUTION: The two-screen display screen made up of first and second display screens is provided with a course, an item or enemy character and a player character are displayed in one display screen, and one of the course, the item, and the enemy character is displayed in the other display screen. When the player character moves to the other display screen, by changing the kind of display of one display screen and the other display screen, a display screen which has no player character, a course or an item of the kind not displayed, a display of a game screen that stimulates the player's curiosity is realized. <P>COPYRIGHT: (C)2005,JPO&NCIPI

Description

  The present invention relates to a two-screen display game apparatus and a two-screen display game program, and in particular, for example, a game is progressed while going back and forth between two types of game spaces using a two-screen display unit. A two-screen display game device and a two-screen display that display a game screen and can enjoy the fun that does not exist in a conventional game using one screen by displaying the background screen in an ambiguous manner on the other display unit. The game program.

Conventionally, as a game for limiting the display range using one screen, Patent Literature 1 is known, and as a game that can be played using a plurality of screens, Patent Literature 2 is known.
Japanese Patent Laid-Open No. 2002-66126 (FIGS. 1, 6 and 11 to 13) JP 2002-325963 A (FIGS. 1 to 6)

  In Patent Document 1, when a game screen is displayed using one screen, the display range is limited by limiting the field of view that the player can see based on the coordinate position and orientation of the player object. It is a game that plays a game while predicting enemy objects that exist in an invisible range.

  However, since Patent Document 1 restricts the field of view in one screen, the range that the player can see is narrow, and the game cannot proceed with a wide field of view using a wide range of screens. There is a limit to the map image expression, and it is impossible to provide a new and fresh game image to the player, which is not interesting. Further, in Patent Document 1, there is a case where an enemy object that cannot be seen from the field of view suddenly attacks the player object, and the difficulty of the game becomes high, and it is difficult to be familiar with beginners and intermediate players other than the core user. I can't get it. Furthermore, in Patent Document 1, the player is distracted with the advancement of the game safely while avoiding attacks from enemy objects, and enjoys the fun of the game by moving around and exploring a wide game space or map. Difficult to enjoy gameplay. Therefore, for games that require a vast game space map (or fictional game world space), such as role-playing games (RPG), simulation RPG (SRPG), action games, and shooting games that are popular with users. Is not suitable.

  Japanese Patent Application Laid-Open No. 2004-228561 is a game system that uses a plurality of portable game machines connected to a single video game machine, and the screen of a home television receiver displayed by the video game machine is common to a plurality of players. A map is displayed, and an image with a narrow field of view as viewed from the viewpoint of the player specific to the player is displayed on the screen of the portable game machine.

  However, since Patent Document 2 requires one home TV and a plurality of portable game machines, the system configuration is complicated and expensive, and a simple map image such as a maze puzzle game can be displayed. It is not suitable for games that require a complicated and vast map such as SRPG and action games. Further, the image displayed on the portable game machine is limited to the field of view determined by the program, the display range cannot be selected, the operation is monotonous, and the user is easily bored.

Therefore, the main object of the present invention is to display a conventional game image on one display unit and the other display unit when a wide game space or map is divided and displayed on two display units. By displaying only a part of the background image and displaying an ambiguous background image, the player's curiosity and desire to search can be drawn, and the fun of a new game not found in conventional games can be experienced. It is to provide a two-screen display game device and a two-screen display game program.
Another object of the present invention is to display only a part or one of the course image and the item as a background image to be displayed on the other display unit, leaving ambiguity, and allowing the player to play with excitement. Providing a two-screen display game device and a two-screen display game program.
Another object of the present invention is to allow a player to move a game object between two screens while enjoying a different atmosphere on one screen and the other screen in a wide visible display area using two screens. A two-screen display game apparatus and a two-screen display game program are provided.
Still another object of the present invention is to display all of the background screen on one screen, which is a game space where a player object exists, and to display only a part of the background screen on the other screen where no player object exists. It is to provide a two-screen display game device and a two-screen display game program that are rich in strategy for game play by considering which of two types of maps to select to advance the game.

The invention according to claim 1 includes a first display unit, a second display unit, an operation unit, a player object image generation unit, a non-player object image generation unit, a background image generation unit, and a display control unit. Is a two-screen display game device.
The first display unit displays a first game image for one screen in a certain game space. The second display unit is arranged in the vicinity of the first display unit, and displays a second game image for one screen in the same game space as the first game image and adjacent to the screen of the first game image. indicate. The operation means is operated by the player to indicate a coordinate position on the game space where the player object exists. The player object image generation means generates a player object image in which the coordinate position of the player object in the game space is changed in accordance with the operation of the operation means. The determining means determines whether the player object is present on the screen displayed on the first display unit or on the screen displayed on the second display unit. The non-player object image generating means generates an image of the non-player object that cannot be operated by the player in order to influence the player object in the game space. The background image generating means generates a background image composed of a course image in which the player object can move in the game space and a stationary object image fixedly displayed in association with the course image. The display control means determines that the player object image and the non-player object image are based on the fact that the determination means determines that the player object is displayed on one of the first display portion and the second display portion. A background image is displayed on one display unit, and at least a part of the background image or a non-player object image is displayed on the other display unit where no player object is displayed.
As a result, a two-screen display game device can be obtained in which the curiosity of the player and the desire to search can be drawn, and the fun of a new game not found in the conventional game can be experienced.

  The invention according to claim 2 is characterized in that the display control means displays the course image included in the background image on the other display unit. As a result, the course image is displayed as an ambiguous display mode on the other display screen, so that the player is curious as to what kind of background image is included in the background image that is not displayed for the player. A game can be played on the other display unit, and a game rich in fun and change can be enjoyed.

  According to a third aspect of the present invention, the background image generating means includes item image generating means for generating an image of an item acquired by the player object, and the display control means displays the item image included in the background image on the other display unit. It is characterized by making it. As a result, an item image is displayed as an ambiguous display mode on the other display screen, so that if the item is desired by the player, the player selects to move to the other display unit and play, Enjoy a variety of games.

  The invention according to claim 4 is characterized in that the display control means displays the image of the non-player object on the other display unit. This makes it possible to play the game on the other display unit with curiosity as to what kind of background image other than the non-player object is displayed on the other display unit. Enjoy it.

  The invention according to claim 5 includes state storage means for temporarily storing the determination result by the determination means. The display control means includes storage state changing means for changing the storage state of the state storage means when the player object moves from one display section to the other display section. Further, when the storage state of the state storage means is changed, the display control means moves the player object from one display section where the player object exists to the other display section, and the other display section displays the player object. A non-player object image and a background image are displayed together with the image, and at least one part of the background image and the non-player object image is displayed on one display portion where the player object is not displayed. Change state. As a result, the player advances the game while moving the player object between the first display unit and the second display unit, and anxiety and curiosity due to ambiguity in the background image of the display unit where the player object does not exist. You can enjoy the game while holding.

  According to a sixth aspect of the present invention, the background image generating means further generates an image of a specific background object with a condition that allows movement from one display unit where the player object exists to the other display unit. The storage state changing unit changes the storage state of the state storage unit based on the fact that the coordinate position between the specific background object and the player object has a predetermined relationship.

  According to a seventh aspect of the present invention, there is provided a portable game device in which the game device includes a housing for storing the first display portion and the second display portion in a predetermined arrangement positional relationship, and the operation means is mounted on a part of the housing. It is.

In the invention according to claim 8, the display control means includes a first screen storage area, a second screen storage area, a third screen storage area, a first image composition display means, and a second image. Composite display means.
The first screen storage area is a coordinate position where the course image and the background object image of the background image generated by the background image generating means are to be displayed in the display area having a size corresponding to twice the display screen size. Correspondingly, it is stored as a bitmap image. The second screen storage area is a bit corresponding to the coordinate position where the non-player object image data generated by the non-player object image generation means should be displayed in the display area having a size corresponding to twice the display screen size. Store as a map image. The third screen storage area stores player object image data generated by the player object image generation means as a bitmap image having a size corresponding to the display screen size. When the determining means determines that the player object is present on the display screen of the first display section, the second image composition display means corresponds to the half display area corresponding to the first display section. The half course image stored in the first screen storage area, the half non-player object image stored in the second screen storage area, and the player object stored in the third screen storage area Combine and display the image. The second image composition display means, when the judging means judges that the player object is present on the display screen of the first display section, the second image composition display means corresponding to the half display area corresponding to the second display section. One of the half course image stored in the first screen storage area and the half non-player object image stored in the second screen storage area, and the third screen storage area. The player object image is combined and displayed on the second display unit.

The invention according to claim 9 is a first display for displaying a first game image, and a first game image arranged in the vicinity of the first display and displayed on the first display. In a game device comprising a second display unit for displaying a second game image on a background screen close to the computer, operating means, and a computer, a player object image generation step, a determination step, This is a two-screen display game program for executing a non-player object image generation step, a background image generation step, and a display control step.
The player object image generation step generates a player object image in which the coordinate position of the player object in a certain game space is changed according to the operation of the operation means. The determination step determines whether the player object is present on the screen displayed on the first display unit or on the screen displayed on the second display unit. The non-player object image generation step generates an image of a non-player object that cannot be operated by the player in order to influence the player object in the game space. The background image generation step generates a background image composed of a course image in which the player object in the game space can move and a stationary object image fixedly displayed in association with the course image. The display control step determines whether the player object image and the non-player object image are based on the fact that the determination means determines that the player object is displayed on either the first display unit or the second display unit. A background image is displayed on one display unit, and at least a part of the background image or a non-player object image is displayed on the other display unit where no player object is displayed.

  In the invention according to claim 10, the display control step displays the course image included in the background image on the other display unit.

  According to an eleventh aspect of the present invention, the background image generating step includes an item image generating step of generating an image of an item acquired by the player object. In the display control step, the item image included in the background image is displayed on the other display unit.

  In the invention according to claim 12, the display control step displays the image of the non-player object on the other display unit.

  According to a thirteenth aspect of the present invention, the game apparatus further includes a state storage unit that temporarily stores a display screen on which the player object exists. The determination step includes a step of temporarily storing the determination result in the state storage means. The display control step includes a storage state changing step of changing the storage state of the state storage unit when the player object moves from one display unit to the other display unit, and further the storage state of the state storage unit is changed. The player object is moved from one display unit where the player object exists to the other display unit, and the non-player object image and the background image are displayed together with the player object image on the other display unit. The display state is changed so that at least a part of the background image and any one of the non-player object images are displayed on one of the display portions where no is displayed.

In a fourteenth aspect of the present invention, the background image generating step includes a step of generating an image of a specific background object with a condition that allows movement from one display unit where the player object exists to the other display unit. The storage state changing step changes the storage state of the state storage unit based on the fact that the coordinate position between the specific background object and the player object has a predetermined relationship.

According to the present invention, when a wide game space or map is divided and displayed on two display units, a conventional game image is displayed on one display unit, and a background image is displayed on the other display unit. By displaying only a part and displaying a background image with ambiguity, it is possible to bring out the curiosity of the player and the desire to search, and to experience the fun of new games not found in conventional games, A two-screen display game device and a two-screen display game program are obtained.
Also, as the background image to be displayed on the other display unit, only a part or one of the course image and item is displayed and the ambiguity remains, so that the player can play with excitement and increase the willingness to play the game. Can do.
Further, in a wide visible display area using two screens, the game can be advanced while enjoying a different atmosphere on one screen and the other screen while moving the player object between the two screens.
Furthermore, the entire screen is displayed on one screen, which is the game space where the player object exists, and only a part of the background screen is displayed on the other screen where the player object does not exist. By selecting whether or not to proceed with the game, a two-screen display game device and a two-screen display game program that are rich in game play strategy can be obtained.

  FIG. 1 is an external view of a portable game device according to one embodiment of the present invention. In FIG. 1, a portable game apparatus 10 of this embodiment is configured by housing two liquid crystal displays (LCD) 11 and 12 in a housing 13 so as to be in a predetermined arrangement position. Specifically, when the first liquid crystal display (hereinafter referred to as “LCD”) 11 and the second LCD 12 are arranged vertically and stored, the housing 13 includes an upper housing 13a and a lower housing 13b. The upper housing 13a is rotatably supported by a part of the upper side of the lower housing 13b. The upper housing 13a has a planar shape slightly larger than the planar shape of the first LCD 11, and an opening is formed so as to expose the display surface of the LCD 11 from one main surface. The lower housing 13b has a planar shape that is longer than that of the upper housing 13a. An opening that exposes the display surface of the LCD 12 is formed at a substantially central portion in the horizontal direction, and a sound release hole 14b is formed on either side of the LCD 12. Are formed, and the operation switch unit 15 is mounted on the left and right sides of the LCD 12.

  The operation switch unit 15 is attached to one main surface of the lower housing 13b on the right side of the LCD 12, and the direction indicating switch 15a, the start switch 15b, the select switch 15c mounted on the one main surface of the lower housing 13b on the left side of the LCD 12. Operation switches 15d and 15e. The direction indicating switch 15a is used for instructing the moving direction of a player object (or player character) that can be operated by the player, instructing the moving direction of the cursor, or the like. The action switches 15d and 15e are actions other than the direction instruction, for example, an instruction such as jumping, punching, and moving a weapon in an action game, item acquisition, and selection of a weapon or command in a role playing game (RPG) or a simulation RPG. It is used for inputting instructions. If necessary, operation switches may be further added, or side switches 15L and 15R may be provided on the upper surface (upper side surface) of the operation switch 15 mounting region in the lower housing 13b.

  A touch panel 16 is attached to the upper surface of the LCD 12. The touch panel 16 may be, for example, any type of resistive film type, optical type (infrared type), and capacitive coupling type, and the upper surface of the touch panel 16 may be pressed, moved, or stroked with a stick 17 (or a finger). When this is done, the coordinate position of the stick 17 is detected and coordinate data is output. The touch panel 16 is used for instructing movement and / or movement of the player object on the map displayed on the screen of the LCD 11 and / or the LCD 12, and various other input instructions (for example, displayed on the LCD 12) depending on the type of game. The selected icon may be used for selecting or operating an icon, a coordinate input instruction, or the like.

  As described above, the portable game device 10 includes the liquid crystal displays 11 and 12 serving as display units for two screens, and the touch panel 16 is provided on the upper surface of one of the LCDs (for example, the LCD 12 which is the lower screen). Therefore, the configuration includes the two-screen LCDs 11 and 12 and two operation units (15 and 16). In this case, the touch panel 16 is used for operation input (or input instruction) different from that of the operation switch unit 15.

  In the vicinity of the side surface of the upper housing 13a, a storage hole 14a for storing a stick 17 for operating the touch panel 16 as necessary is formed. The stick 17 is stored in the storage hole 14a. A cartridge insertion portion (not shown) for detachably mounting a game cartridge 30 containing a memory (for example, ROM) storing a game program is formed in a part of the side surface of the lower housing 13b. A connector (not shown) for electrical connection with the game cartridge 30 is built in the cartridge insertion portion. Furthermore, an electronic circuit board (30 shown in FIG. 8 described later) on which various electronic components such as a CPU are mounted is accommodated in the lower housing 13b (or the upper housing 13a). Note that the information storage medium for storing the game program is not limited to a nonvolatile semiconductor memory such as a ROM or a flash memory, but may be a CD-ROM, a DVD, or an optical disk storage medium similar thereto.

  FIG. 2 is a block diagram of a portable game device according to one embodiment of the present invention. In FIG. 2, a CPU core 21 is mounted on the electronic circuit board 20 accommodated in the housing 13. A connector 23 is connected to the CPU core 21 via a bus 22, an input / output interface (I / F) circuit 24, a first graphic processing unit (first GPU) 25, and a second graphic. A processing unit (second GPU) 26 and a working RAM (hereinafter referred to as “W-RAM”) 27 are connected. A cartridge (or memory card) 30 is detachably connected to the connector 23. The cartridge 30 includes a ROM 31 and an S-RAM 35. When the S-RAM 35 is removed from the portable game apparatus 10, backup power is supplied by a button battery (not shown) in order to prevent the stored data from being destroyed due to the stop of the power supply. The ROM 31 is read and controlled by the CPU core 21, and the S-RAM 35 is written and / or read controlled by the CPU core 21. The operation key switch unit 15 and the touch panel 16 are connected to the I / F circuit 24 and the speaker 19 is connected. The speaker 19 is disposed at the inner position of the sound release hole 14b. A first video RAM (hereinafter “V-RAM”) 38 is connected to the first GPU 25, and a second video RAM (hereinafter “V-RAM”) 39 is connected to the second GPU 26. .

Based on the program stored in the ROM 31, the CPU core 21 reads out one map image data (for example, the entire range of map image data in one map number indicated by a symbol MAP in FIG. 5 described later), Transfer to the W-RAM 27. The CPU core 21 reads a program for generating and controlling the map image from the ROM 31 and gives it to the GPU 26. In response to this, the GPU 25 reads out the W-RAM 27 and generates map image data to obtain map image data to be displayed on one screen of the LCD 11 (map image data in the range indicated by 11a in FIG. 5). The V-RAM 29 is written, and the V-RAM 28 is read out at a predetermined timing to display a map image on the LCD 11.
The V-RAM 28 and the V-RAM 29 may be connected to the bus 32 so that the CPU core 21 can directly write or read.

  FIG. 3 is a memory map schematically showing data stored in the ROM 31. In FIG. 3, the ROM 31 is roughly divided into storage areas 32 and 33. The storage area 32 is a storage area for storing image data, and stores a storage area 32a for storing object (or character) image data and course image data constituting a part of a map (or stage) image. Storage area 32b. The object image data storage area 32a stores a player object and a non-player object that is a moving object other than the player object (for example, an enemy object, a friend object, etc.). If necessary, the non-player object to be displayed on the LCD 11 as the first display unit and the non-player object to be displayed on the LCD 12 as the second display unit may be stored in different memory spaces. The storage area 32b is a storage area for storing the course image data, and stores the course image data for each of the first map to the Nth map.

  When the map (stage) image is a three-dimensional image, it is generated by pasting a plurality of polygon data specifying the shape and a texture such as a pattern / color to the shape defined by each polygon data. In this case, the distance data from the camera to the polygon is changed to generate a map image, which is converted into bitmap image data and stored in the V-RAMs 28 and 29.

  The storage area 33 is a storage area for storing various program data necessary for game processing, and includes storage areas 33a to 33j. For example, a player object display control program is stored in the storage area 33a. In the storage area 33b, the first display course image display control program data is stored. The storage area 33c stores first display item image display control program data. The storage area 33d stores first display unit non-player object image display control program data. The storage area 33e stores second display unit course image display control program data. The storage area 33f stores second display unit item image display control program data. The storage area 33g stores second non-player object image display control program data for the display unit.

  The storage area 33h stores operation switch operation state detection processing program data. The operation switch operation state detection processing program, for example, detects the amount of movement of the direction indication switch 15a, whether it is up, down, left, or right, and the duration of the direction indication, or the operation switches 15c, 15e, every short period of time. It is a program such as type detection. In the storage area 33i, touch panel operation state detection processing program data is stored. The touch panel operation state detection processing program reads coordinate data that changes according to the operation of the touch panel every short fixed time (for example, a frame) and temporarily stores the coordinate data, and relatively long fixed time (for example, several tens of times the frame period to Detects the change state of the coordinate data every several hundred times), and if the change of the coordinate data is the same (or substantially the same) repeated coordinate data, detects that it is an instruction to change the display coordinate position of the narrow range map image If the change in the coordinate data changes gradually and continuously, it is a program that detects that the movement direction is instructed based on the amount of change in the X-axis component and the Y-axis component. Further, the movement amount (scroll amount or distance) may be detected based on a vector amount obtained by synthesizing each change amount of the X-axis component and the Y-axis component.

The storage area 33j stores a program for determining whether the player object is present on the first display unit (LCD 11) or the second display unit (LCD 12). The result determined or determined by this determination program is temporarily stored in a part of the storage area (or address, generally called “flag area”) of the W-RAM 27. The temporary storage area for storing the determination result functions as state storage means, stores “0” when the player object is displayed on the LCD 11 side, and is not displayed on the LCD 11 side (displayed on the LCD 12 side). Is stored), by storing “1”, the display area in which the player object exists is stored and held.
Details of processing of various programs stored in the storage areas 33a to 33j will be described with reference to FIGS.

  FIG. 4 is a diagram schematically showing a game space for explaining the principle of the present invention. In particular, FIG. 4 shows game spaces and player objects to be displayed on an upper screen (LCD 11) and a lower screen (LCD 12) on a certain map (or stage) in a side-scrolling action game or role-playing game (RPG), respectively. It is a thing. Specifically, one map or stage includes two game spaces, which are a game space 41 wider than the display range of the upper screen (LCD 11) and a game space 42 wider than the display range of the lower screen (LCD 12). Including. The display ranges indicated by the bold lines of the game spaces 41 and 42 (one screen at the top and bottom of the left end in the illustrated state) are respectively displayed on the LCD 11 and the LCD 12, and as the player object 42 moves in the right direction, The displayed ranges on the game spaces 41 and 42 are gradually moved (scrolled) at the same speed. That is, in the game space 41 on the upper screen, auxiliary or preliminary course images (parts or blocks of courses) 412, 413, 414 are drawn in addition to the basic course image 411 extending in the horizontal direction. A specific background object (example shown in the figure) that is conditioned so that the player object 43 can come and go (or freely come and go) to the other game space 41 anywhere in the course image 411 or the preliminary course images 412 to 413. Then, clay pipes (415.416, 417 serving as communication passages) are drawn. When the player object 43 moves on the course image 411, the player object 43 advances the course while avoiding the attack of the enemy object 44 a, and clears the course while acquiring various items 418 that are appropriately displayed in the course image 411.

  When the player object 43 wants to move to another game space 42, the player operates the operation switch (for example, 15L) that is placed on the specific background object (earthen pipe) 415 to 417 and instructs to proceed to another game space 42. Thus, the condition is set so that it can move. The game space 42 is drawn so that the course image 421 extends long in the horizontal direction, and a specific background object (conditional so that it can be moved to the game space 41 at coordinate positions corresponding to the specific background objects (earthen pipes) 415 to 417 ( Earthen pipes) 425-427 are drawn. Like the game space 41, the game space 42 can display items 428 and non-player objects (enemy objects) 44b, but when the player object 43 does not exist (in other words, the player object 43 exists in the game space 41). At least one of the course image 411, the item 428, and the non-player object 44b, and at most two images are displayed. The reason is that a background image or a non-player object of the game space 42 in which the player object 43 does not exist (in contrast, if the game space 42 in which the player object 43 exists is the lower game space 42) is displayed. By not doing so, the player's curiosity is stimulated, and the player is encouraged to move to a game space different from the current game space or to exhibit unexpectedness. Further, when the player object moves in the game space, the display state is changed in an unpredictable manner in the moved game space, so that the other game is cleared even after the map or stage is cleared using the one game space. Using the space, you can play again with new feelings.

FIG. 5 is a diagram for explaining the display principle for realizing the game screen of FIG. As an example, the game space 41 and the game space 42 are configured by a plurality of screens (cells) for each of the game spaces 41 and 42 in a range to be displayed on at least the LCD 11 and the LCD 12, and a layer for displaying the player object 43. (Cell) is set with the highest priority and is displayed on a background image lower than that. For the game space (for example, 41) where the player object 43 exists, images of all layers (cells) are displayed. Display processing is performed so as to combine and display based on the priority. On the other hand, for a game space in which the player object 43 does not exist (for example, 42), only the layer set by the program is selected and displayed from the layers (cells) storing the background image or the image of the non-player object. Display processing as follows. Specifically, when the program is set to display the course image, the layer (bottom cell) of the course image corresponding to the game space 42 in FIG. 5 is selected, and the item (eg, coin) image is displayed. If the program is set to display, the item image layer (second cell from the bottom) corresponding to the game space 42 is selected. If the program is set to display enemy objects, the game space 42 is selected. The layer (third cell from the bottom) of the enemy object image corresponding to is selected.
However, in each cell, data indicating that the area other than the player object 43, the enemy object 44b, the item image 428, and the course image 421 is displayed transparently (or nothing is displayed) is written in the cell. The image of the layer will be seen through.

  FIG. 6 shows a display example in which all the layers of the game space 41 are displayed on the LCD 11 which is the upper screen, and the course image layers of the game space 42 are displayed on the LCD 12 which is the lower screen.

  FIG. 7 shows a display example in which all the layers of the game space 41 are displayed on the LCD 11 which is the upper screen, and the course image layer and the item image layer of the game space 42 are combined and displayed on the LCD 12 which is the lower screen. In FIG. 7, only the item image layer of the game space 42 may be displayed on the LCD 12.

FIG. 8 shows a display example when the player object on the LCD 11 which is the upper screen moves from the game space 41 to the game space 42. In this case, the player object 43 disappears from the upper screen and appears on the lower screen. At that time, not only the course image (or item image) of the game space 42 but also the item image, enemy object, etc. Various images of all layers are combined and displayed. On the other hand, only the course image (and / or item image) is displayed in the game space 41 where the player object 43 has disappeared, and when the display screen scrolls with the progress of the subsequent game, it becomes a mysterious game image. , It can arouse the curiosity of the player and create a desire to return. When the player object 43 returns to the game space 41 again, the lower screen is displayed ambiguously as shown in FIG.
Next, the operation in the case of controlling the display of the game screens as shown in FIGS.

  10 and 11 are flowcharts of the two-screen display game device and the two-screen display game program according to one embodiment of the present invention. FIG. 12 is a flowchart of the key input processing subroutine. Next, with reference to FIGS. 1 to 12, a specific operation in the case of performing the display processing of the two-screen display game image of FIGS.

  When a power switch (not shown) is turned on, the CPU core 21 starts the following processing based on each program stored in the storage area 33 of the ROM 31. First, in step (abbreviated as “S” in the drawing) 11, initial processing is performed. As this initial processing, for example, after the W-RAM 27 and V-RAM 28 and 39 are initially cleared, the backup data stored in the RAM 35 (if played so far, the stage that was captured until the previous play) (Or map) number, experience value, progress data such as acquired item) are read out and written in a backup data storage area (not shown) of W-RAM 27. Also, a play start selection screen is displayed, and selection is made between starting from the first stage (number 1) or starting from the stage number following the previous play. In step 12, the selected stage number (stage number “1” when playing for the first time) is set in the stage counter (or stage register; although not shown, a partial address of the W-RAM 27). In this way, the preparation process for starting the game play is performed.

In subsequent step 13, stage image data for the entire range of stage numbers set in the stage counter (for example, the entire range of MAP shown in FIG. 3) is read from the ROM 31 and written to the W-RAM 27. In step 14, the coordinate data of the player object is set to an initial value. For example, the leftmost coordinate of the first stage image in the game space 41 displayed on the LCD 11 is written in a register (partial address of the W-RAM 27) that stores the coordinate position of the player object. further,
In step 15, a flag for determining the screen on which the player object exists is set to an initial value (for example, “0” indicating that it exists in the game space 41 on the upper screen).

  In step 16, when a key input operation is performed by the player, it is determined in step 17 that any key input has been made, and key input subroutine processing is performed. This key input subroutine process will be described later with reference to FIG. Thereafter, the process proceeds to Step 18. When an input operation is performed on the touch panel by the player in step 18, it is determined in step 19 that the touch panel has been operated. In step 20, touch panel input processing is performed, and then the process proceeds to step 21. If there is no key input, it is determined in step 17 that there is no key input, and the process proceeds to step 18 without processing the key input subroutine. If there is no touch panel input, it is determined in step 19 that there is no touch panel input, and the process proceeds to step 21 without performing touch panel input processing.

  And in the non-display period of LCD11 and LCD12, the process of steps 21-27 is performed. That is, in step 21, it is determined whether or not it is a non-display period of the LCD 11 and LCD 12, and if it is determined that it is a non-display period, in step 22, based on the course image display control program on the upper screen. The CPU core 21 performs course image processing on the upper screen. In this process, since the CPU core 21 sets the coordinate position determined by the initial value and displays the course image for one screen from the coordinate position on the LCD 11, the coordinate of the upper left corner on the display screen of the LCD 11 is The coordinates of the game space 41 are set so as to have an offset value. Then, the course image data in the display range indicated by the thick line in the upper part of FIG. In step 23, the CPU core 21 performs item image processing on the upper screen based on the item image display control program on the upper screen. In this process, the CPU core 21 sets the coordinate position determined by the initial value, and the item image to be displayed corresponding to the previously set course image range (display range indicated by the upper thick line in FIG. 4) is displayed. Write to the item image cell area of the W-RAM 27. Further, in step 24, the CPU 21 writes the non-player object image data in the non-player object image cell area of the W-RAM 27 in order to display it on the non-player object to be displayed on the course image in the range of one screen.

Similarly, the course image processing of the lower screen is performed in step 25, the item image processing of the lower screen is performed in step 26, and the non-player object image processing of the lower screen is performed in step 27. In this manner, the W-RAM 27 individually stores the upper screen course image, item image, and non-player object image, and the lower upper screen course image, item image, and non-player object image. Will be.
In step 28, it is determined whether or not the stage clear condition has been reached. If it is determined that the stage has not been cleared, the process returns to step 16 and steps 16 to 21 are repeated.

  If it is determined in step 21 described above that it is not the non-display period of the LCD 11 and the LCD 12 (that is, the display period), in step 29, the information stored in the W-RAM 27 at the display timing of the LCD 11 is displayed. The course image data and item image data on the screen are sequentially read and overwritten in the V-RAM 28. In step 30, the GPU 25 controls to read out the V-RAM 28, so that the course image data and item image data on the upper screen are sequentially read out in synchronism with the frame scanning in one frame period, and are combined and displayed on the LCD 11. The Similarly, in step 31, the course image data and item image data on the lower screen stored in the W-RAM 27 are sequentially read and overwritten in the V-RAM 28 at the display timing of the LCD 12. In step 32, the GPU 25 controls to read out the V-RAM 28, so that the course image data and item image data on the lower screen are sequentially read out in synchronism with the frame scanning in one frame period, and are combined and displayed on the LCD 12. The In step 33, it is determined whether or not the screen on which the player object 43 exists is an upper screen by determining whether or not the player object screen determination flag is 0. If it is determined that the screen is the upper screen, in step 34, a non-player object is displayed on the upper screen. On the other hand, if it is determined that the screen is the lower screen, in step 35, a non-player object is displayed on the upper screen. In this way, the course image, item image, and non-player object are all displayed on the screen where the flayer object exists, and either or both of the course image and the item image (or both) (or It is possible to display only non-player objects).

  Thereafter, in step 28, it is determined whether or not the stage clear condition has been reached. If it is determined that the stage has not been cleared, the process returns to step 16, and the above-described steps 16 to 28, or steps 16 to 21, 29 are performed. The operations of .about.35 and 28 are repeated. If the stage clear succeeds during these operations, it is determined in step 28 that the stage clear condition has been reached. In step 36, the count value of the stage counter is incremented by 1, and image processing of the next stage is performed. .

  Subsequently, in step 36, it is determined whether or not the game has ended. This game end condition is detected when the count value of the stage counter reaches the maximum stage number (N) or when the game over condition (for example, the hit point or life of the player is “0”). Detected. When it is detected in step 37 that the game end condition is not satisfied, the process returns to step 13 described above, and the operations of steps 13 to 28 or steps 13 to 21, 29 to 35, and 28 are repeated at a constant cycle.

  Next, the process of the key input subroutine will be described with reference to FIG. In step 51, the coordinate position where the player object 43 is located is detected. In step 52, it is determined whether or not there is an input from the direction indicating switch 15a. If it is determined that there is an input, the process proceeds to step 53. If it is determined that there is no input, the process proceeds to step 58 described later. When there is an input from the direction indicating switch 15a, in step 54, an operation state detection process of the direction indicating switch 15a, for example, “up”, “down”, “left”, or “right” of the direction indicating switch 15a is selected. If the key is pressed, the key code corresponding to the operated “up”, “down”, “left”, “right” is read and temporarily stored in an internal register (not shown). In step 21, a process for changing the current coordinate position of the player object based on the operation of the direction indicating switch 15a is performed. In step 55, it is determined whether or not the player object satisfies a condition for allowing the player screen to move between the upper screen and the lower screen. If it is determined that the screen movement condition is satisfied, it is determined in step 56 whether or not the player object has moved to another screen. If it is determined that the screen has moved to another screen, the player object screen determination flag is reversed in step 57.

  Thereafter, in step 58, it is determined whether or not there is an input from the other operation switches 15b to 15f. When it is determined that there is an input from the operation switches 15b to 15f, in step 59, the other switches are used. Input processing is performed. Thereafter, or when it is determined that there is no input from the operation switches 15b to 15f, the process returns to step 18. In this way, processing according to the operation input of the direction indicating switch 15a15a and the other operation switches 15b to 15f is performed.

  In the above-described embodiment, the case of the horizontal scroll game program has been described. However, the technical idea of the present invention can also be applied to a vertical scroll game as shown in FIGS. The technical idea of the present invention is not limited to an action game, but can be applied to various genre games such as RPG, simulation RPG, and shooting game.

By the way, in each of the above-described embodiments, the case where two physically separated LCDs 11 and 12 are vertically arranged as an example of a liquid crystal display unit for two screens (in the case of two screens on the top and bottom) has been described. Except for the housing 13a, one housing 13c may be formed in a horizontally long shape so that the LCDs 11 and 12 for two screens can be accommodated in a left-right arrangement. In this case, considering that there are many right-handed users, the LCD 12 with the touch panel 16 attached is preferably arranged on the right side and the LCD 11 is arranged on the left side. However, when making a left-handed portable game device, the arrangement is reversed.
As another arrangement example, instead of a configuration in which two physically separated LCDs 11 and 12 are arranged above and below, a single vertically long LCD having the same horizontal width and a double vertical length (a In other words, by using a single LCD that has a vertical display size of 2 screens), the liquid crystal display part for 2 screens is arranged vertically to move the stage image for 2 screens up and down. May be displayed (that is, displayed adjacent to each other without upper and lower boundary portions). In addition, using a single horizontally long LCD with the same vertical width and double horizontal length, the stage images for two screens are displayed in the horizontal direction on the left and right (that is, adjacent to each other without the left and right borders). Display).

1 is an external view of a portable game device that is one embodiment of the present invention. It is a block diagram of the portable game device which is another Example of this invention. 3 is a memory map schematically showing a storage area of a ROM 31. It is the figure which showed the game space 41 displayed on an upper screen, and the game space 42 displayed on a lower screen illustratively. FIG. 5 is a diagram for explaining the display principle for realizing the game screen of FIG. A display example is shown in which all the layers of the game space 41 are displayed on the LCD 11 which is the upper screen, and the course image layers of the game space 42 are displayed on the LCD 12 which is the lower screen. A display example is shown in which all the layers of the game space 41 are displayed on the LCD 11 which is the upper screen, and the course image layer and the item image layer of the game space 42 are combined and displayed on the LCD 12 which is the lower screen. A display example when the player object on the upper screen moves from the game space 41 to the game space 42 is shown. A display example when the player object on the lower screen moves from the game space 42 to the game space 41 is shown. It is a flowchart (first half part) of the game software which is an example of the game device which plays a game using 2 screens. It is a flowchart (second half part) of the game software which is an example of the game device which plays a game using 2 screens. It is a flowchart of a key input processing subroutine. It is an example of a screen display of an up scroll. It is another example of the screen display of an up scroll.

Explanation of symbols

10; portable game device 11; first liquid crystal display (LCD)
12; First liquid crystal display (LCD)
13; housing 15; operation switch 16; touch panel 20; electronic circuit board 21; CPU core 24; input / output interface circuit 25, 26;
27; W-RAM
28, 29; V-RAM
30; Memory cartridge

Claims (14)

A first display unit for displaying a first game image for one screen in a certain game space;
A second game image arranged in the vicinity of the first display unit and displaying a second game image for one screen adjacent to the screen of the first game video in the same game space as the first game video; Display,
An operation means that is operated by the player to instruct at least the moving direction of the player object,
Player object image generation means for generating a player object image in which the coordinate position of the player object in the game space is changed in accordance with an operation of the operation means;
Determining means for determining whether the player object is present on the screen displayed on the first display unit or on the screen displayed on the second display unit;
Non-player object image generating means for generating an image of a non-player object that cannot be operated by a player in order to influence the player object in the game space;
A background image generating means for generating a background image composed of a course image in which the player object in the game space is movable and a stationary object image fixedly displayed in association with the course image; and Displaying the player object image, the non-player object image, and the background image on one side based on the determination that one of the first display unit and the second display unit is displayed. A two-screen display provided with display control means for displaying at least a part of the background image and the non-player object image on the other display unit on which the player object is not displayed. Game device.   The two-screen display game device according to claim 1, wherein the display control unit displays a course image included in the background image on the other display unit. The background image generating means includes item image generating means for generating an image of an item acquired by a player object,
The two-screen display game apparatus according to claim 1, wherein the display control unit displays an item image included in the background image on the other display unit.   The two-screen display game apparatus according to claim 1, wherein the display control unit displays an image of the non-player object on the other display unit. The determination means includes state storage means for temporarily storing a determination result,
The display control means includes
Storage state changing means for changing the storage state of the state storage means when the player object moves from the one display section to the other display section;
Further, when the storage state of the state storage means is changed, the player object is moved from the one display unit where the player object exists to the other display unit, and a player object image is displayed on the other display unit. In addition, the non-player object image and the background image are displayed, and at least one part of the background image and the non-player object image is displayed on one display portion where the player object is not displayed. The two-screen display game device according to any one of claims 1 to 4, wherein the display state is changed. The background image generation means further generates an image of a specific background object with a condition that allows movement from the one display unit where the player object exists to the other display unit,
The two screens according to claim 5, wherein the storage state changing unit changes the storage state of the state storage unit based on a coordinate relationship between the specific background object and the player object being in a predetermined relationship. Display game device.   The game device is a portable game device including a housing that houses the first display unit and the second display unit in a predetermined arrangement positional relationship, and the operation means is mounted on a part of the housing. The two-screen display game device according to any one of claims 1 to 6. The display control means includes
Of the background image generated by the background image generating means, the course image and the background object image are bit-corresponding to coordinate positions to be displayed in a display area having a size corresponding to twice the display screen size. A first screen storage area for storing a map image;
Non-player object image data generated by the non-player object image generation means is stored as a bitmap image corresponding to the coordinate position to be displayed in a display area having a size corresponding to twice the display screen size. Screen storage area,
A third screen storage area for storing player object image data generated by the player object image generation means as a bitmap image having a size corresponding to a display screen size;
When the determination means determines that a player object is present on the display screen of the first display unit, the first screen memory is stored in correspondence with a half display area corresponding to the first display unit. The half course image stored in the area, the half non-player object image stored in the second screen storage area, and the player object image stored in the third screen storage area are combined. First image composition display means for displaying
When the determination means determines that a player object is present on the display screen of the first display unit, it is stored in the first screen storage area corresponding to a half display area corresponding to the second display unit. One of the half course image being stored and the half non-player object image stored in the second screen storage area, and the player object image stored in the third screen storage area The two-screen display game device according to claim 1, further comprising: a second image composition display unit that synthesizes and displays the image on the second display unit. A first display unit for displaying a first game image, and a second background screen disposed in the vicinity of the first display unit and in proximity to the first game image displayed on the first display unit. In a game apparatus comprising a second display unit for displaying a game image of the above, an operation means, and a computer,
A player object image generation step for generating a player object image in which the coordinate position of the player object in a certain game space is changed in accordance with the operation of the operation means;
A determination step of determining whether the player object is present on a screen displayed on the first display unit or on a screen displayed on the second display unit;
A non-player object image generating step for generating an image of a non-player object that cannot be operated by a player in order to influence the player object in the game space;
A background image generating step for generating a background image composed of a course image in which the player object in the game space is movable and a stationary object image that is fixedly displayed in association with the course image; and Displaying the player object image, the non-player object image, and the background image on one side based on the determination that one of the first display unit and the second display unit is displayed. A two-screen display that causes a display control step to display at least a part of the background image and the non-player object image to be displayed on the other display unit on which the player object is not displayed. Game program.   The two-screen display game program according to claim 9, wherein the display control step displays a course image included in the background image on the other display unit. The background image generation step includes an item image generation step for generating an image of an item acquired by the player object,
The two-screen display game program according to claim 9, wherein the display control step displays an item image included in the background image on the other display unit.   The two-screen display game program according to claim 9, wherein the display control step displays an image of the non-player object on the other display unit. The game apparatus further includes a state storage unit that temporarily stores a display screen on which a player object exists,
The determination step includes a step of temporarily storing a determination result in the state storage means,
The display control step includes:
A storage state changing step of changing a storage state of the state storage unit when the player object moves from the one display unit to the other display unit;
Further, when the storage state of the state storage unit is changed, the player object is moved from the one display unit where the player object exists to the other display unit, and a player object image is displayed on the other display unit. In addition, the non-player object image and the background image are displayed, and at least one part of the background image and the non-player object image is displayed on the one display unit where the player object is not displayed. The two-screen display game program according to claim 9, wherein the display state is changed as described above. The background image generation step includes a step of generating an image of a specific background object with a condition that allows movement from the one display unit where the player object exists to the other display unit;
The two screens according to claim 13, wherein the storage state changing step changes the storage state of the state storage unit based on a coordinate relationship between the specific background object and the player object being in a predetermined relationship. Display game program.

Images