由淺入深！Flash制作高射炮游戲[圖]

　　Mouse.hide();
　　attachMovie("crosshair", "crosshair", 1);
　　crosshair.onEnterFrame = function() {
　　this._x = _xmouse;
　　this._y = _ymouse;
　　};

　　Mouse.hide();
　　attachMovie("crosshair", "crosshair", 1);
　　attachMovie("tank", "tank", 2, {_x:230, _y:350});
　　crosshair.onEnterFrame = function() {
　　this._x = _xmouse;
　　this._y = _ymouse;
　　};
　　tank.onEnterFrame = function() {
　　mousex = _xmouse-this._x;
　　mousey = (_ymouse-this._y)*-1;
　　angle = Math.atan(mousey/mousex)/(Math.PI/180);
　　if (mousex<0) {
　　angle += 180;
　　}
　　if (mousex>=0 && mousey<0) {
　　angle += 360;
　　}
　　this.cannon._rotation = angle*-1;
　　};