Computer readable recording medium recording a program for causing a light source to be displayed on a game screen and the program, and game screen display method and apparatus
First Claim
1. A computer readable recording medium recording a program for causing a light source to be displayed on a game screen, the program causing a computer:
- to acquire update history of a position of the light source moving in the game screen;
to judge a movement locus of the light source based upon the acquired update history;
to generate a semitransparent object for which brightness corresponding to a distance from the movement locus is set, on the judged movement locus;
to set transparency corresponding to a distance from the position of the light source for the generated semitransparent object; and
to display the generated semitransparent object with the set transparency.
1 Assignment
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Accused Products
Abstract
A light trace expressing a trace generated in a case where a light source is moved in a virtual three-dimensional space can be displayed with higher reality. An initially used table or the like is initialized. Next, a light source or the like is moved by an operation input or the like. Subsequently, perspective transformation is carried out to obtain a position of the light source on a display screen. Next, a polygon having a predetermined width is generated along a new movement locus of the light source on the display screen. Then, transparency of all the generated polygons is raised. In the polygon generated earlier, the transparency increases. Then, a texture in which the brightness is high along the movement locus of the light source and the brightness of a position decreases as the position departs from the movement locus, is mapped to the polygon. Thereafter, α blending is used to draw the polygon on the movement locus of the light source. The drawn image is displayed on the display screen. This is repeated for each display frame until a game ends.
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Citations
20 Claims
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1. A computer readable recording medium recording a program for causing a light source to be displayed on a game screen, the program causing a computer:
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to acquire update history of a position of the light source moving in the game screen;
to judge a movement locus of the light source based upon the acquired update history;
to generate a semitransparent object for which brightness corresponding to a distance from the movement locus is set, on the judged movement locus;
to set transparency corresponding to a distance from the position of the light source for the generated semitransparent object; and
to display the generated semitransparent object with the set transparency. - View Dependent Claims (2, 3, 4, 5)
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6. A program for causing a light source to be displayed on a game screen, the program causing a computer
to acquire update history of a position of the light source moving in the game screen; -
to judge a movement locus of the light source based upon the acquired update history;
to generate a semitransparent object for which brightness corresponding to a distance from the movement locus is set, on the judged movement locus;
to set transparency corresponding to a distance from the position of the light source for the generated semitransparent object; and
to display the generated semitransparent object with the set transparency. - View Dependent Claims (7, 8, 9, 10)
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11. A game screen display method for causing a light source to be displayed on a game screen, the game screen display method comprising:
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acquiring update history of a position of the light source moving in the game screen;
judging a movement locus of the light source based upon the acquired update history;
generating a semitransparent object for which brightness corresponding to a distance from the movement locus is set, on the judged movement locus;
setting transparency corresponding to a distance from the position of the light source for the generated semitransparent object; and
displaying the generated semitransparent object with the set transparency. - View Dependent Claims (12, 13, 14, 15)
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16. A game screen display apparatus, comprising:
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a computer readable recording medium recording a program for causing a light source to be displayed on a display screen;
a computer for reading out at least a part of the program from the recording medium and executing the program; and
the display screen for displaying a game realized by the program, wherein the computer causes;
acquisition of update history of a position of the light source moving in the display screen;
judgment of a movement locus of the light source based upon the acquired update history;
generation of a semitransparent object for which brightness corresponding to a distance from the movement locus is set, on the judged movement locus;
setting of transparency corresponding to a distance from the position of the light source for the generated semitransparent object; and
displaying of the generated semitransparent object with the set transparency. - View Dependent Claims (17, 18, 19, 20)
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Specification