Display control method, game machine, and recording medium having recorded thereon processing program, for inhibiting unsmooth movement of display image

Abstract

A display image ( 201 ) which is substantially identical with a display image ( 200 ) and has the minimum opacity is caused to emerge so as to overlap the display image ( 200 ). Next, the display image ( 201 ) is shifted one dot to the right, and opacity of the display image ( 201 ) is increased gradually until opacity assumes a value of 100 %. Further, the display image ( 200 ) is erased from the display area.

What is claimed is:  
     
         1 . A display control method for displaying a desired display image within a display area of a display device, the display control method comprising a step of performing image processing so that a first display image appears to be smoothly moved in a predetermined direction.  
     
     
         2 . The display control method of    claim 1   , wherein the performing step includes: 
 displaying a second display image which is substantially identical with a displayed content of the first display image and has predetermined minimum opacity relative to opacity of the first display image, so that the first display image and the second display image are overlapped;    shifting the second display image in the predetermined direction by an amount of a movement in which the first display image will be moved;    gradually increasing the opacity of the second display image to maximum opacity similar to the opacity of the first display image; and    erasing the first display image from the display area when the opacity of the second display image is the maximum opacity.    
     
     
         3 . The display control method of    claim 2   , wherein the performing step further includes linearly increasing the opacity of the second display image at respective points of time a plurality of frames are switched.  
     
     
         4 . The display control method of    claim 2   , wherein the performing step further includes maintaining a position of the first display image on the display area without moving the first display image in the predetermined direction.  
     
     
         5 . The display control method of    claim 1   , wherein the performing step includes maintaining a position of the first display image on the display area without moving the first display image in the predetermined direction.  
     
     
         6 . The display control method of    claim 2   , wherein the performing step further includes: 
 grasping that the first display image will be moved in the predetermined direction; and    maintaining a position of the first display image on the display area without moving the first display image in the predetermined direction.    
     
     
         7 . A game machine, displaying a desired display image within a display area of a display device, and performing image processing so that a first display image appears to be smoothly moved in a predetermined direction, the game machine comprising: 
 an image displaying device which displays a second display image which is substantially identical with a displayed content of the first display image and has predetermined minimum opacity relative to opacity of the first display image, so that the first display image and the second display image are overlapped;    an image shifting device which shifts the second display image in the predetermined direction by an amount of a movement in which the first display image will be moved;    an opacity increasing device which gradually increases the opacity of the second display image to maximum opacity similar to the opacity of the first display image; and    an erasing device which erases the first display image from the display area when the opacity of the second display image is the maximum opacity.    
     
     
         8 . The game machine of    claim 7   , wherein the opacity of the second display image linearly increased at respective points of time a plurality of frames are switched.  
     
     
         9 . The game machine of    claim 7   , further comprising a position maintaining device which maintains a position of the first display image on the display area without moving the first display image in the predetermined direction.  
     
     
         10 . The game machine of    claim 7   , further comprising: 
 a grasping device which grasps that the first display image will be moved in the predetermined direction; and    a position maintaining device which maintains a position of the first display image on the display area without moving the first display image in the predetermined direction.    
     
     
         11 . A computer readable medium having recorded thereon a processing program for displaying a desired display image within a display area of a display device, the processing program comprising an image processing routine for performing image processing so that a first display image appears to be smoothly moved in a predetermined direction.  
     
     
         12 . The computer readable medium of    claim 11   , wherein the image processing routine includes: 
 displaying a second display image which is substantially identical with a displayed content of the first display image and has predetermined minimum opacity relative to opacity of the first display image, so that the first display image and the second display image are overlapped;    shifting the second display image in the predetermined direction by an amount of a movement in which the first display image will be moved;    gradually increasing the opacity of the second display image to maximum opacity similar to the opacity of the first display image; and    erasing the first display image from the display area when the opacity of the second display image is the maximum opacity.    
     
     
         13 . The computer readable medium of    claim 12   , wherein the image processing routine further includes linearly increasing the opacity of the second display image at respective points of time a plurality of frames are switched.  
     
     
         14 . The computer readable medium of    claim 12   , wherein the image processing routine further includes maintaining a position of the first display image on the display area without moving the first display image in the pre determined direction.  
     
     
         15 . The computer readable medium of    claim 11   , wherein the image processing routine includes maintaining a position of the first display image on the display area without moving the first display image in the predetermined direction.  
     
     
         16 . The computer readable medium of    claim 12   , wherein the image processing routine further includes: 
 grasping that the first display image will be moved in the predetermined direction; and    maintaining a position of the first display image on the display area without moving the first display image in the predetermined direction.