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Controlling Volume

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Khối lượng kiểm soát Mọi thứ chúng tôi đã thực hiện đến thời điểm này đã được chuẩn bị cho một số bài tập tiếp theo. Mặc dù kiểm soát khối lượng của một trường hợp clip phim với một đối tượng âm thanh đính kèm là một nhiệm vụ đơn giản, chúng tôi kế hoạch để có một cách tiếp cận cực kỳ năng động để xử lý. | Controlling Volume Everything we ve done to this point has been in preparation for the next several exercises. Although controlling the volume of a movie clip instance with an attached Sound object is a straightforward task we plan to take an extremely dynamic approach to the process. Remember in the first exercise of this lesson that we created a Sound object named bounce and associated it with the basketball_mc movie clip instance. This movie clip instance contains a bouncing sound that plays when the ball appears to hit the floor. To adjust the volume of this Sound object you would use the following syntax bounce.setVolume 70 This line of script uses the setVolume method to set the volume of the bounce Sound object to 70 percent. Because this particular Sound object is associated with the basketball_mc movie clip instance the volume of all sounds on that timeline will be adjusted accordingly. Volume can be set anywhere from 0 muted to 100 100 percent . Because ActionScript is such a dynamic scripting language we can also use a variable name to set the volume rather than hard-coding it as demonstrated previously. If the value of the variable changes so does the amount of the volume adjustment. Take a look at the following example bounce.setVolume myVariable This line of script adjusts the volume of the bounce Sound object to the current value of myVariable. As the value of myVariable changes so does the volume of the bounce Sound object. We ll use this dynamic approach for this exercise. The project s background was designed to provide a sense of depth with the bottom of the basketball court sounding close to the user and the top of the court seeming distant. The court itself is a close visual representation of the boundary we scripted in the preceding exercise. With this fact in mind our goal is simple we want to set the volume of the bounce Sound object based on the vertical position of the ball within the boundary. When the ball is at the top of the boundary .