Anyon good at math?

programming flash
1

greeting all you wonderfull flash people herer at kirupa.

Ill get to the point fast, i realy need help whit som flash math.

It is a bouncing ball pong sort of thing i’m trying to make.

so on my stage i got… well,
a ball_mc and a block_mc and the problem is i have no clue how to get ball_mc to bounce off the block _mc, can anyon help me,

regards Dondeigo

herer is the fla

http://www.box.net/public/n0b2o4d6c8

and herer is the code


init(); 
function init() { 
    left = 0; 
    right = 140; 
    top = 0; 
    bottom = 380; 
    ball_mc.onEnterFrame = move; 
    ball_mc.onPress = drag; 
    block_mc.onPress = drag; 
    ball_mc.onRelease = ball_mc.onReleaseOutside=noDrag; 
    block_mc.onRelease = block_mc.onReleaseOutside=noDrag; 
    friction = .98;     // constant drag on momentum 
    restitution = .99;  // bounciness 
    grav = 1;            // +Y force 
    smoosh=1,5 ; 
    squishLimit=30;     // larger values=more squish 
    jiggle=.25;            // larger values=more jiggle 
} 

function drag() { 
    this.startDrag(); 
    this.dragging = true; 
} 
function noDrag() { 
    this.stopDrag(); 
    this.dragging = false; 
} 


function move() { 
    // + JIGGLE 
    Xsquishforce+=(100-this._xscale); 
    Ysquishforce+=(100-this._yscale); 
     
    Xsquishforce*=jiggle; 
    Ysquishforce*=jiggle; 
     
    this._xscale+=Xsquishforce; 
    this._yscale+=Ysquishforce; 
    // - JIGGLE 
     
    if (!this.dragging) { 
        this.velY += grav; 
        this.velX *= friction; 
        this.velY *= friction; 
        this._x += this.velX; 
        this._y += this.velY; 
         
        if(ball_mc, hitTest(block_mc)) { 
        this.velY += grav; 
        this.velX *= friction; 
        this.velY *= friction; 
        this._x += this.velX; 
        this._y += this.velY; 


         
        collision=0; // init 

        if (ball_mc._x>right-(this._width/2)) { 
            collision=Math.abs(ball_mc.oldX-this._x); 
            if(collision<3){collision=0;} 
             
            ball_mc._yscale+=smoosh*collision; 
            ball_mc._xscale-=smoosh*collision; 
             
            ball_mc._x = right-(ball_mc._width/2); 
            ball_mc.velX *= -1*restitution; 

             } 
            if (ball_mc._x<left+(ball_mc._width/2)) { 
            collision=Math.abs(ball_mc.oldX-ball_mc._x); 
            if(collision<3){collision=0;} 
             
            ball_mc._yscale+=smoosh*collision; 
            ball_mc._xscale-=smoosh*collision; 
             
            ball_mc._x=left+(ball_mc._width/2); 
            ball_mc.velX *= -1*restitution; 
         

        } 

        if (this._y>bottom-(this._height/2)) { 
            collision=Math.abs(this.oldY-this._y); 
            if(collision<3){collision=0;} 
             
            this._xscale+=smoosh*collision; 
            this._yscale-=smoosh*collision; 
                     
            this._y = bottom-(this._height/2); 
            this.velY *= -1*restitution; 
         

            } 
        if (this._y<top+(this._height/2)) { 
            collision=Math.abs(this.oldY-this._y); 
            if(collision<3){collision=0;} 
             
            this._xscale+=smoosh*collision; 
            this._yscale-=smoosh*collision; 
             
            this._y = top+(this._height/2); 
            this.velY *= -1*restitution; 
         

        } 
        if(this._xscale<100-squishLimit){this._xscale=100-squishLimit;} 
        else if(this._xscale>100+squishLimit){this._xscale=100+squishLimit;} 
         
        if(this._yscale<100-squishLimit){this._yscale=100-squishLimit;} 
        else if(this._yscale>100+squishLimit){this._yscale=100+squishLimit;} 
    } else { 
        hit="null"; 
        this.velX = this._x-this.oldX; 
        this.velY = this._y-this.oldY; 
         
    } 
    this.oldX = this._x; 
    this.oldY = this._y; 

} 
}