JPH06337918A - Method for judging contact of complex-shaped character - Google Patents

Abstract

PURPOSE:To exremely shorten judging time for judging the contact of a character having a complex shape by approximating the complex-shaped character with a group of simple graphics such as triangles, rectangles and circles and judging the contact of the character based upon the graphics. CONSTITUTION:When the inaccuracy of eyes is utilized for the judgement of contact between two characters, a difference between its display and judgement is not so large and programming is possible. In the case of judging contact in a game using hands for attacking an enemy, a character is expressed by a rectangle, point coordinates on a diagonal of the friend side are expressed by (x1, y1) - (x2, y2) and that of enemy side are, expressed by (X1, Y1) - (X2, Y2). When fist is projected, the length of arm is approximated by a rectangle. The point coordinates of the arm is expressed by (x3, y3) - (x4, y4) to judge as if the fist attacks the enemy. Since the shape of a character is approximated, the contact of the character can be judged only by a simple condition.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a computer game which requires contact judgment of an irregular large character.

[0002]

2. Description of the Related Art Computer games often used simple figures in the early stages of their development, but with the progress of computers, it has become more common to use images having a shape similar to that of a real person or thing.

In a computer game, an image of a character or the like is called a character. When a character having such a complicated shape comes into contact with each other, the following two methods are conventionally used to make a contact determination by a program. Method has been adopted.

One is a method of judging by the representative points of the character, and the other is a method of checking each character faithfully to the character.

[0005]

In the former method, the judgment speed is fast, but a large character is judged at a single point, so that there is a large difference between the display on the screen and the judgment. Even so, if the screen was small and the characters were small as before, there was no problem. However, as recently, when the screen is large and large characters are handled,
This method is unrealistic and unusable.

On the other hand, although the latter is accurate, since it is checked in dot units, there are many check points and the determination takes too long. In particular, there is a problem that it cannot be used to determine the contact between large characters. An object of the present invention is to develop a method for performing such a contact determination between large-sized characters quickly, and further, a determination with less deviation from the screen display.

[0007]

[Means for Solving the Problems] In actual boxing or kendo where contact determination is an important factor, the game may be decided in an instant. Even if you can see the punch and bamboo sword,
Often it is impossible to tell whether or not it has hit the opponent. Because the speed is too fast. Still, only the atmosphere can be grasped, and a fast game is generally like this.

Even in computer games, games requiring contact determination often deal with fast-moving characters. For this reason, like boxing and kendo,
For the spectator, the atmosphere at that time is more important than whether or not the punch or bamboo sword directly hits the opponent.

When a human being visually determines a moving object,
Because it is not so accurate. In the contact determination between the characters, if the inaccuracy of the eyes is used, there is not much difference between the display and the determination, and programming can be performed.

Therefore, in the present invention, an irregular character is approximated by a set of simple figures such as triangles, rectangles and circles, and contact determination is performed based on the figure.

For example, contact determination is performed assuming that a bus is rectangular and a passenger car is large and small. In this way, most of the figures can be expressed as a superposition of simple figures such as triangles, circles, and rectangles, and even if contact determination is performed based on them, there is no unnaturalness.

[0012]

DESCRIPTION OF THE PREFERRED EMBODIMENTS The contact determination method of the present invention will be described below with reference to a simple game in which a hand is used to defeat an enemy. As shown in FIG. 1, a person is represented by a rectangle when in a ready state. The point coordinates on the diagonal line of an ally (characters that can be operated by the player) are represented by (x1, y1)-(x2, y2), and those of the enemy are represented by (X1, Y1)-(X2, Y2).

As shown in FIG. 2, the arm when the fist is next projected is approximated by a rectangle. The point coordinates on the diagonal line at that time are (x3, y3)-(x4, y4). At this time, whether the fist hits the enemy is determined as follows.

Win: (X1 ≦ x4 and X1 ≧ x3) and (X1 ≦ y4 and Y2 ≧ y3)

Loss: (X1 ≦ x2 and X2 ≧ x1) and (Y1 ≧ y2 and Y2 ≧ y1)

The above determination is an example when the ally is on the left of the enemy. In this judgment, if the range from the fist to the arm has reached the opponent, it is judged that the enemy has been hit and wins. If the body hits the enemy's body, the player loses. By approximating the shape of the character, the contact determination can be made only under such simple conditions.

[0017]

According to the method of the present invention, since a character having a complicated shape is contact-determined as a group of simple figures, the determination time can be greatly shortened. Moreover, since the shape of the character is approximated to some extent, there is an effect that the game can be progressed as a natural contact phenomenon as visually sensed.

[Brief description of drawings]

FIG. 1 is an explanatory diagram of a game according to an embodiment of the present invention.

FIG. 2 is an explanatory diagram of a game according to an embodiment of the present invention.

Claims (1)

[Claims] 1. A contact determination method for an irregular character, characterized in that, in a computer game for determining the contact of an irregular character, the contact is determined by approximating the irregular character with a simple graphic.