Artillery style game help

programming
1

Hi folks. I’m making a few basic games with the help of kirupa’s tutorials. I want to do a game based on Artillery - lost the link to that now, never mind! Anyway, I’ve based most of my existing code on the duplicateMovieClip(); tutorial, and the circular movement tutorial.

Firstly, I opened up the duplicateMovieClip(); tutorial and wrote my own code around it (I’m not a complete newbie to Flash) - so I’ve kept the button code:

 
on (press) {
 i = i + 1;
 duplicateMovieClip (_root.circle, "circle" + i, i);
}

Easy enough. Now, for the duplicated ‘bullet’ - don’t know why I haven’t changed the name from circle, but bear with me!

 
onClipEvent (load) {
//makes sure that the original MC doesn't move about!
 if (this != _level0.circle){ 
//set some variables - firing speed, gravity and origin of MC
 firespeed = 100;
 gravity = 5;
 this._x = 230;
 this._y = 125;
 }
}
onClipEvent(enterFrame){
 if (this != _level0.circle){
//checks that this is a duplicate
 firespeed -= gravity;
//takes gravity away from speed of projectile - so we have realistic physics ;)
 this._y -= firespeed/10;
//moves the bullet up - but remember that gravity affects firespeed - so it also moves down later!
 if (this._y >= 150){
//get rid of the mc once its off the view area.
  this.removeMovieClip();
 }
 }
}

Basically I made some modifications to the code to make a simple cannon. This cannon only fires the bullets upwards. Now, I made some more modifications using the circle tutorial. The bullet code now looks like this:

 
onClipEvent (load) {
 if (this != _level0.circle){
 firespeed = 200;
 degspeed = 10;
 gravity = 5;
 this._x = 230;
 this._y = 125;
 ranF = random(4)+1;
 this.gotoAndStop(ranF);
 var radius = firespeed/2;
 var xcenter = this._x -50;
 var ycenter = this._y;
 var degree = 0;
 var radian;
 }
}
onClipEvent(enterFrame){
 if (this != _level0.circle){
 firespeed -= gravity;
 this._y -= firespeed/10;
 degree += degspeed;
 radian = (degree/180)*Math.PI;
 this._x = xcenter+Math.cos(radian)*radius;
 this._y = ycenter-Math.sin(radian)*radius;
 if (this._y >= 150){
  this.removeMovieClip();
 }
 }
}

Can’t be bothered writing previous comments on this. Basically I just modified the code to make the bullet have circular movement. Nothing special.

So far I have had no problems. Now, I want to make the angle of the bullet relative to mouse position - and also make some sort of power bar - limiting how fast and how high the projectile goes. I’m totally stuck here!

I’ve attached both the first file and the second file for you to fix. Any help is appreciated.