[Flash Basic theory Lesson 06] Make Move role [key class]

Back to "flash Basic Theory Class-Catalog"

Train of thought: 1. Use keyboard to control MC movement, such as: Key.isdown (key.right);

2. And agreed to the scope of the MC move: Top, bottom, left, right.

Step 1:

Make a role, save as a movie clip, and the instance is named "MC".

Step 2:

As code layer:

var speed = 12;

//移动速度：每次移动的距离

var top = mc._height/2;
var bottom = Stage.height-mc._height/2;
var left = mc._width/2;
var right = Stage.width-mc._width/2;


_root.onEnterFrame = function () {
if (Key.isDown(Key.DOWN) && mc._y<bottom) {
mc._y += speed;
}
if (Key.isDown(Key.UP) && mc._y>top) {
mc._y -= speed;
}
if (Key.isDown(Key.RIGHT) && mc._x<right) {
mc._x += speed;
}
if (Key.isDown(Key.LEFT) && mc._x>left) {
mc._x -= speed;
}
};

Flash charge: Get keyboard character method

var ml = new Object();

Key.addListener(ml);
ml.onKeyDown = function() {

var kd = Key.getAscii();

trace(kd)

}

//给ml这个Object添加一个键盘侦听,ml开始侦听按下Key的AscII码。