大炮打敌机小游戏(附源码)

gun_mc._rotation=-40;
_root.ang=-40;
_root.total=0;
_root.attachMovie("fly","fly",10,{_x:random(300)+220,_y:random(220)+10});
up_btn.onPress=function(){
turnangle(5);
if(gun_mc._rotation<-85){
gun_mc._rotation=-85;
}
}
down_btn.onPress=function(){
turnangle(-5);
if(gun_mc._rotation>-5){
gun_mc._rotation=-5;
}
}
function turnangle(tmp){
gun_mc._rotation+=-1*tmp;
_root.ang=gun_mc._rotation;
}
fire_btn.onPress=function(){
if(_root.ball._currentframe==1){
_root.ball.gotoAndPlay(2);
}
}

stop ();
_visible = false;

var rad = -_root.ang/180*Math.PI;
_x = _root.gun_mc._x+80*Math.cos(rad);
_y = _root.gun_mc._y-80*Math.sin(rad);
var Vx = Math.sqrt(750)*Math.cos(rad);
var Vy = -1*Math.sqrt(750)*Math.sin(rad);
_visible = true;

var hitMon = this.hitTest(_root.fly);
if (hitMon) {
gotoAndPlay("HitBang");
}
_x += Vx;
_y += Vy;
Vy++;
if (_y>=350 || _x>550) {
gotoAndPlay("Bang");
}
trace(1);

gotoAndPlay (_currentframe-1);

gotoAndStop(1);

:_root.fly.removeMovieClip();
_root.total++;

:_root.attachMovie("fly", "fly", 10, {_x:random(300)+220, _y:random(220)+10});
gotoAndStop(1);
//------------------------------------------